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// dear imgui, v1.60 WIP
// (drawing and font code)
// Contains implementation for
// - Default styles
// - ImDrawList
// - ImDrawData
// - ImFontAtlas
// - ImFont
// - Default font data
#if defined(_MSC_VER) && !defined(_CRT_SECURE_NO_WARNINGS)
#define _CRT_SECURE_NO_WARNINGS
#endif
#include "imgui.h"
#define IMGUI_DEFINE_MATH_OPERATORS
#include "imgui_internal.h"
#include <stdio.h> // vsnprintf, sscanf, printf
#if !defined(alloca)
#ifdef _WIN32
#include <malloc.h> // alloca
#if !defined(alloca)
#define alloca _alloca // for clang with MS Codegen
#endif
#elif defined(__GLIBC__) || defined(__sun)
#include <alloca.h> // alloca
#else
#include <stdlib.h> // alloca
#endif
#endif
#ifdef _MSC_VER
#pragma warning(disable : 4505) // unreferenced local function has been removed (stb stuff)
#pragma warning(disable : 4996) // 'This function or variable may be unsafe': strcpy, strdup, sprintf, vsnprintf, sscanf, fopen
#define snprintf _snprintf
#endif
#ifdef __clang__
#pragma clang diagnostic ignored "-Wold-style-cast" // warning : use of old-style cast // yes, they are more terse.
#pragma clang diagnostic ignored "-Wfloat-equal" // warning : comparing floating point with == or != is unsafe // storing and comparing against same constants ok.
#pragma clang diagnostic ignored "-Wglobal-constructors" // warning : declaration requires a global destructor // similar to above, not sure what the exact difference it.
#pragma clang diagnostic ignored "-Wsign-conversion" // warning : implicit conversion changes signedness //
#if __has_warning("-Wcomma")
#pragma clang diagnostic ignored "-Wcomma" // warning : possible misuse of comma operator here //
#endif
#if __has_warning("-Wreserved-id-macro")
#pragma clang diagnostic ignored "-Wreserved-id-macro" // warning : macro name is a reserved identifier //
#endif
#if __has_warning("-Wdouble-promotion")
#pragma clang diagnostic ignored "-Wdouble-promotion" // warning: implicit conversion from 'float' to 'double' when passing argument to function
#endif
#elif defined(__GNUC__)
#pragma GCC diagnostic ignored "-Wunused-function" // warning: 'xxxx' defined but not used
#pragma GCC diagnostic ignored "-Wdouble-promotion" // warning: implicit conversion from 'float' to 'double' when passing argument to function
#pragma GCC diagnostic ignored "-Wconversion" // warning: conversion to 'xxxx' from 'xxxx' may alter its value
#pragma GCC diagnostic ignored "-Wcast-qual" // warning: cast from type 'xxxx' to type 'xxxx' casts away qualifiers
#endif
//-------------------------------------------------------------------------
// STB libraries implementation
//-------------------------------------------------------------------------
//#define IMGUI_STB_NAMESPACE ImGuiStb
//#define IMGUI_DISABLE_STB_RECT_PACK_IMPLEMENTATION
//#define IMGUI_DISABLE_STB_TRUETYPE_IMPLEMENTATION
#ifdef IMGUI_STB_NAMESPACE
namespace IMGUI_STB_NAMESPACE
{
#endif
#ifdef _MSC_VER
#pragma warning(push)
#pragma warning(disable : 4456) // declaration of 'xx' hides previous local declaration
#endif
#ifdef __clang__
#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Wunused-function"
#pragma clang diagnostic ignored "-Wmissing-prototypes"
#pragma clang diagnostic ignored "-Wimplicit-fallthrough"
#endif
#ifdef __GNUC__
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wtype-limits" // warning: comparison is always true due to limited range of data type [-Wtype-limits]
#endif
#define STBRP_ASSERT(x) IM_ASSERT(x)
#ifndef IMGUI_DISABLE_STB_RECT_PACK_IMPLEMENTATION
#define STBRP_STATIC
#define STB_RECT_PACK_IMPLEMENTATION
#endif
#include "stb_rect_pack.h"
#define STBTT_malloc(x, u) ((void)(u), ImGui::MemAlloc(x))
#define STBTT_free(x, u) ((void)(u), ImGui::MemFree(x))
#define STBTT_assert(x) IM_ASSERT(x)
#ifndef IMGUI_DISABLE_STB_TRUETYPE_IMPLEMENTATION
#define STBTT_STATIC
#define STB_TRUETYPE_IMPLEMENTATION
#else
#define STBTT_DEF extern
#endif
#include "stb_truetype.h"
#ifdef __GNUC__
#pragma GCC diagnostic pop
#endif
#ifdef __clang__
#pragma clang diagnostic pop
#endif
#ifdef _MSC_VER
#pragma warning(pop)
#endif
#ifdef IMGUI_STB_NAMESPACE
} // namespace ImGuiStb
using namespace IMGUI_STB_NAMESPACE;
#endif
//-----------------------------------------------------------------------------
// Style functions
//-----------------------------------------------------------------------------
void ImGui::StyleColorsDark(ImGuiStyle* dst)
{
ImGuiStyle* style = dst ? dst : &ImGui::GetStyle();
ImVec4* colors = style->Colors;
colors[ImGuiCol_Text] = ImVec4(1.00f, 1.00f, 1.00f, 1.00f);
colors[ImGuiCol_TextDisabled] = ImVec4(0.50f, 0.50f, 0.50f, 1.00f);
colors[ImGuiCol_WindowBg] = ImVec4(0.06f, 0.06f, 0.06f, 0.94f);
colors[ImGuiCol_ChildBg] = ImVec4(1.00f, 1.00f, 1.00f, 0.00f);
colors[ImGuiCol_PopupBg] = ImVec4(0.08f, 0.08f, 0.08f, 0.94f);
colors[ImGuiCol_Border] = ImVec4(0.43f, 0.43f, 0.50f, 0.50f);
colors[ImGuiCol_BorderShadow] = ImVec4(0.00f, 0.00f, 0.00f, 0.00f);
colors[ImGuiCol_FrameBg] = ImVec4(0.16f, 0.29f, 0.48f, 0.54f);
colors[ImGuiCol_FrameBgHovered] = ImVec4(0.26f, 0.59f, 0.98f, 0.40f);
colors[ImGuiCol_FrameBgActive] = ImVec4(0.26f, 0.59f, 0.98f, 0.67f);
colors[ImGuiCol_TitleBg] = ImVec4(0.04f, 0.04f, 0.04f, 1.00f);
colors[ImGuiCol_TitleBgActive] = ImVec4(0.16f, 0.29f, 0.48f, 1.00f);
colors[ImGuiCol_TitleBgCollapsed] = ImVec4(0.00f, 0.00f, 0.00f, 0.51f);
colors[ImGuiCol_MenuBarBg] = ImVec4(0.14f, 0.14f, 0.14f, 1.00f);
colors[ImGuiCol_ScrollbarBg] = ImVec4(0.02f, 0.02f, 0.02f, 0.53f);
colors[ImGuiCol_ScrollbarGrab] = ImVec4(0.31f, 0.31f, 0.31f, 1.00f);
colors[ImGuiCol_ScrollbarGrabHovered] = ImVec4(0.41f, 0.41f, 0.41f, 1.00f);
colors[ImGuiCol_ScrollbarGrabActive] = ImVec4(0.51f, 0.51f, 0.51f, 1.00f);
colors[ImGuiCol_CheckMark] = ImVec4(0.26f, 0.59f, 0.98f, 1.00f);
colors[ImGuiCol_SliderGrab] = ImVec4(0.24f, 0.52f, 0.88f, 1.00f);
colors[ImGuiCol_SliderGrabActive] = ImVec4(0.26f, 0.59f, 0.98f, 1.00f);
colors[ImGuiCol_Button] = ImVec4(0.26f, 0.59f, 0.98f, 0.40f);
colors[ImGuiCol_ButtonHovered] = ImVec4(0.26f, 0.59f, 0.98f, 1.00f);
colors[ImGuiCol_ButtonActive] = ImVec4(0.06f, 0.53f, 0.98f, 1.00f);
colors[ImGuiCol_Header] = ImVec4(0.26f, 0.59f, 0.98f, 0.31f);
colors[ImGuiCol_HeaderHovered] = ImVec4(0.26f, 0.59f, 0.98f, 0.80f);
colors[ImGuiCol_HeaderActive] = ImVec4(0.26f, 0.59f, 0.98f, 1.00f);
colors[ImGuiCol_Separator] = colors[ImGuiCol_Border];
colors[ImGuiCol_SeparatorHovered] = ImVec4(0.10f, 0.40f, 0.75f, 0.78f);
colors[ImGuiCol_SeparatorActive] = ImVec4(0.10f, 0.40f, 0.75f, 1.00f);
colors[ImGuiCol_ResizeGrip] = ImVec4(0.26f, 0.59f, 0.98f, 0.25f);
colors[ImGuiCol_ResizeGripHovered] = ImVec4(0.26f, 0.59f, 0.98f, 0.67f);
colors[ImGuiCol_ResizeGripActive] = ImVec4(0.26f, 0.59f, 0.98f, 0.95f);
colors[ImGuiCol_CloseButton] = ImVec4(0.41f, 0.41f, 0.41f, 0.50f);
colors[ImGuiCol_CloseButtonHovered] = ImVec4(0.98f, 0.39f, 0.36f, 1.00f);
colors[ImGuiCol_CloseButtonActive] = ImVec4(0.98f, 0.39f, 0.36f, 1.00f);
colors[ImGuiCol_PlotLines] = ImVec4(0.61f, 0.61f, 0.61f, 1.00f);
colors[ImGuiCol_PlotLinesHovered] = ImVec4(1.00f, 0.43f, 0.35f, 1.00f);
colors[ImGuiCol_PlotHistogram] = ImVec4(0.90f, 0.70f, 0.00f, 1.00f);
colors[ImGuiCol_PlotHistogramHovered] = ImVec4(1.00f, 0.60f, 0.00f, 1.00f);
colors[ImGuiCol_TextSelectedBg] = ImVec4(0.26f, 0.59f, 0.98f, 0.35f);
colors[ImGuiCol_ModalWindowDarkening] = ImVec4(0.80f, 0.80f, 0.80f, 0.35f);
colors[ImGuiCol_DragDropTarget] = ImVec4(1.00f, 1.00f, 0.00f, 0.90f);
colors[ImGuiCol_NavHighlight] = ImVec4(0.26f, 0.59f, 0.98f, 1.00f);
colors[ImGuiCol_NavWindowingHighlight] = ImVec4(1.00f, 1.00f, 1.00f, 0.70f);
}
void ImGui::StyleColorsClassic(ImGuiStyle* dst)
{
ImGuiStyle* style = dst ? dst : &ImGui::GetStyle();
ImVec4* colors = style->Colors;
colors[ImGuiCol_Text] = ImVec4(0.90f, 0.90f, 0.90f, 1.00f);
colors[ImGuiCol_TextDisabled] = ImVec4(0.60f, 0.60f, 0.60f, 1.00f);
colors[ImGuiCol_WindowBg] = ImVec4(0.00f, 0.00f, 0.00f, 0.70f);
colors[ImGuiCol_ChildBg] = ImVec4(0.00f, 0.00f, 0.00f, 0.00f);
colors[ImGuiCol_PopupBg] = ImVec4(0.11f, 0.11f, 0.14f, 0.92f);
colors[ImGuiCol_Border] = ImVec4(0.50f, 0.50f, 0.50f, 0.50f);
colors[ImGuiCol_BorderShadow] = ImVec4(0.00f, 0.00f, 0.00f, 0.00f);
colors[ImGuiCol_FrameBg] = ImVec4(0.43f, 0.43f, 0.43f, 0.39f);
colors[ImGuiCol_FrameBgHovered] = ImVec4(0.47f, 0.47f, 0.69f, 0.40f);
colors[ImGuiCol_FrameBgActive] = ImVec4(0.42f, 0.41f, 0.64f, 0.69f);
colors[ImGuiCol_TitleBg] = ImVec4(0.27f, 0.27f, 0.54f, 0.83f);
colors[ImGuiCol_TitleBgActive] = ImVec4(0.32f, 0.32f, 0.63f, 0.87f);
colors[ImGuiCol_TitleBgCollapsed] = ImVec4(0.40f, 0.40f, 0.80f, 0.20f);
colors[ImGuiCol_MenuBarBg] = ImVec4(0.40f, 0.40f, 0.55f, 0.80f);
colors[ImGuiCol_ScrollbarBg] = ImVec4(0.20f, 0.25f, 0.30f, 0.60f);
colors[ImGuiCol_ScrollbarGrab] = ImVec4(0.40f, 0.40f, 0.80f, 0.30f);
colors[ImGuiCol_ScrollbarGrabHovered] = ImVec4(0.40f, 0.40f, 0.80f, 0.40f);
colors[ImGuiCol_ScrollbarGrabActive] = ImVec4(0.41f, 0.39f, 0.80f, 0.60f);
colors[ImGuiCol_CheckMark] = ImVec4(0.90f, 0.90f, 0.90f, 0.50f);
colors[ImGuiCol_SliderGrab] = ImVec4(1.00f, 1.00f, 1.00f, 0.30f);
colors[ImGuiCol_SliderGrabActive] = ImVec4(0.41f, 0.39f, 0.80f, 0.60f);
colors[ImGuiCol_Button] = ImVec4(0.35f, 0.40f, 0.61f, 0.62f);
colors[ImGuiCol_ButtonHovered] = ImVec4(0.40f, 0.48f, 0.71f, 0.79f);
colors[ImGuiCol_ButtonActive] = ImVec4(0.46f, 0.54f, 0.80f, 1.00f);
colors[ImGuiCol_Header] = ImVec4(0.40f, 0.40f, 0.90f, 0.45f);
colors[ImGuiCol_HeaderHovered] = ImVec4(0.45f, 0.45f, 0.90f, 0.80f);
colors[ImGuiCol_HeaderActive] = ImVec4(0.53f, 0.53f, 0.87f, 0.80f);
colors[ImGuiCol_Separator] = ImVec4(0.50f, 0.50f, 0.50f, 1.00f);
colors[ImGuiCol_SeparatorHovered] = ImVec4(0.60f, 0.60f, 0.70f, 1.00f);
colors[ImGuiCol_SeparatorActive] = ImVec4(0.70f, 0.70f, 0.90f, 1.00f);
colors[ImGuiCol_ResizeGrip] = ImVec4(1.00f, 1.00f, 1.00f, 0.16f);
colors[ImGuiCol_ResizeGripHovered] = ImVec4(0.78f, 0.82f, 1.00f, 0.60f);
colors[ImGuiCol_ResizeGripActive] = ImVec4(0.78f, 0.82f, 1.00f, 0.90f);
colors[ImGuiCol_CloseButton] = ImVec4(0.50f, 0.50f, 0.90f, 0.50f);
colors[ImGuiCol_CloseButtonHovered] = ImVec4(0.70f, 0.70f, 0.90f, 0.60f);
colors[ImGuiCol_CloseButtonActive] = ImVec4(0.70f, 0.70f, 0.70f, 1.00f);
colors[ImGuiCol_PlotLines] = ImVec4(1.00f, 1.00f, 1.00f, 1.00f);
colors[ImGuiCol_PlotLinesHovered] = ImVec4(0.90f, 0.70f, 0.00f, 1.00f);
colors[ImGuiCol_PlotHistogram] = ImVec4(0.90f, 0.70f, 0.00f, 1.00f);
colors[ImGuiCol_PlotHistogramHovered] = ImVec4(1.00f, 0.60f, 0.00f, 1.00f);
colors[ImGuiCol_TextSelectedBg] = ImVec4(0.00f, 0.00f, 1.00f, 0.35f);
colors[ImGuiCol_ModalWindowDarkening] = ImVec4(0.20f, 0.20f, 0.20f, 0.35f);
colors[ImGuiCol_DragDropTarget] = ImVec4(1.00f, 1.00f, 0.00f, 0.90f);
colors[ImGuiCol_NavHighlight] = colors[ImGuiCol_HeaderHovered];
colors[ImGuiCol_NavWindowingHighlight] = ImVec4(1.00f, 1.00f, 1.00f, 0.70f);
}
// Those light colors are better suited with a thicker font than the default one + FrameBorder
void ImGui::StyleColorsLight(ImGuiStyle* dst)
{
ImGuiStyle* style = dst ? dst : &ImGui::GetStyle();
ImVec4* colors = style->Colors;
colors[ImGuiCol_Text] = ImVec4(0.00f, 0.00f, 0.00f, 1.00f);
colors[ImGuiCol_TextDisabled] = ImVec4(0.60f, 0.60f, 0.60f, 1.00f);
//colors[ImGuiCol_TextHovered] = ImVec4(1.00f, 1.00f, 1.00f, 1.00f);
//colors[ImGuiCol_TextActive] = ImVec4(1.00f, 1.00f, 0.00f, 1.00f);
colors[ImGuiCol_WindowBg] = ImVec4(0.94f, 0.94f, 0.94f, 1.00f);
colors[ImGuiCol_ChildBg] = ImVec4(0.00f, 0.00f, 0.00f, 0.00f);
colors[ImGuiCol_PopupBg] = ImVec4(1.00f, 1.00f, 1.00f, 0.98f);
colors[ImGuiCol_Border] = ImVec4(0.00f, 0.00f, 0.00f, 0.30f);
colors[ImGuiCol_BorderShadow] = ImVec4(0.00f, 0.00f, 0.00f, 0.00f);
colors[ImGuiCol_FrameBg] = ImVec4(1.00f, 1.00f, 1.00f, 1.00f);
colors[ImGuiCol_FrameBgHovered] = ImVec4(0.26f, 0.59f, 0.98f, 0.40f);
colors[ImGuiCol_FrameBgActive] = ImVec4(0.26f, 0.59f, 0.98f, 0.67f);
colors[ImGuiCol_TitleBg] = ImVec4(0.96f, 0.96f, 0.96f, 1.00f);
colors[ImGuiCol_TitleBgActive] = ImVec4(0.82f, 0.82f, 0.82f, 1.00f);
colors[ImGuiCol_TitleBgCollapsed] = ImVec4(1.00f, 1.00f, 1.00f, 0.51f);
colors[ImGuiCol_MenuBarBg] = ImVec4(0.86f, 0.86f, 0.86f, 1.00f);
colors[ImGuiCol_ScrollbarBg] = ImVec4(0.98f, 0.98f, 0.98f, 0.53f);
colors[ImGuiCol_ScrollbarGrab] = ImVec4(0.69f, 0.69f, 0.69f, 0.80f);
colors[ImGuiCol_ScrollbarGrabHovered] = ImVec4(0.49f, 0.49f, 0.49f, 0.80f);
colors[ImGuiCol_ScrollbarGrabActive] = ImVec4(0.49f, 0.49f, 0.49f, 1.00f);
colors[ImGuiCol_CheckMark] = ImVec4(0.26f, 0.59f, 0.98f, 1.00f);
colors[ImGuiCol_SliderGrab] = ImVec4(0.26f, 0.59f, 0.98f, 0.78f);
colors[ImGuiCol_SliderGrabActive] = ImVec4(0.46f, 0.54f, 0.80f, 0.60f);
colors[ImGuiCol_Button] = ImVec4(0.26f, 0.59f, 0.98f, 0.40f);
colors[ImGuiCol_ButtonHovered] = ImVec4(0.26f, 0.59f, 0.98f, 1.00f);
colors[ImGuiCol_ButtonActive] = ImVec4(0.06f, 0.53f, 0.98f, 1.00f);
colors[ImGuiCol_Header] = ImVec4(0.26f, 0.59f, 0.98f, 0.31f);
colors[ImGuiCol_HeaderHovered] = ImVec4(0.26f, 0.59f, 0.98f, 0.80f);
colors[ImGuiCol_HeaderActive] = ImVec4(0.26f, 0.59f, 0.98f, 1.00f);
colors[ImGuiCol_Separator] = ImVec4(0.39f, 0.39f, 0.39f, 1.00f);
colors[ImGuiCol_SeparatorHovered] = ImVec4(0.14f, 0.44f, 0.80f, 0.78f);
colors[ImGuiCol_SeparatorActive] = ImVec4(0.14f, 0.44f, 0.80f, 1.00f);
colors[ImGuiCol_ResizeGrip] = ImVec4(0.80f, 0.80f, 0.80f, 0.56f);
colors[ImGuiCol_ResizeGripHovered] = ImVec4(0.26f, 0.59f, 0.98f, 0.67f);
colors[ImGuiCol_ResizeGripActive] = ImVec4(0.26f, 0.59f, 0.98f, 0.95f);
colors[ImGuiCol_CloseButton] = ImVec4(0.59f, 0.59f, 0.59f, 0.50f);
colors[ImGuiCol_CloseButtonHovered] = ImVec4(0.98f, 0.39f, 0.36f, 1.00f);
colors[ImGuiCol_CloseButtonActive] = ImVec4(0.98f, 0.39f, 0.36f, 1.00f);
colors[ImGuiCol_PlotLines] = ImVec4(0.39f, 0.39f, 0.39f, 1.00f);
colors[ImGuiCol_PlotLinesHovered] = ImVec4(1.00f, 0.43f, 0.35f, 1.00f);
colors[ImGuiCol_PlotHistogram] = ImVec4(0.90f, 0.70f, 0.00f, 1.00f);
colors[ImGuiCol_PlotHistogramHovered] = ImVec4(1.00f, 0.45f, 0.00f, 1.00f);
colors[ImGuiCol_TextSelectedBg] = ImVec4(0.26f, 0.59f, 0.98f, 0.35f);
colors[ImGuiCol_ModalWindowDarkening] = ImVec4(0.20f, 0.20f, 0.20f, 0.35f);
colors[ImGuiCol_DragDropTarget] = ImVec4(0.26f, 0.59f, 0.98f, 0.95f);
colors[ImGuiCol_NavHighlight] = colors[ImGuiCol_HeaderHovered];
colors[ImGuiCol_NavWindowingHighlight] = ImVec4(0.70f, 0.70f, 0.70f, 0.70f);
}
//-----------------------------------------------------------------------------
// ImDrawListData
//-----------------------------------------------------------------------------
ImDrawListSharedData::ImDrawListSharedData()
{
Font = NULL;
FontSize = 0.0f;
CurveTessellationTol = 0.0f;
ClipRectFullscreen = ImVec4(-8192.0f, -8192.0f, +8192.0f, +8192.0f);
// Const data
for (int i = 0; i < IM_ARRAYSIZE(CircleVtx12); i++)
{
const float a = ((float)i * 2 * IM_PI) / (float)IM_ARRAYSIZE(CircleVtx12);
CircleVtx12[i] = ImVec2(cosf(a), sinf(a));
}
}
//-----------------------------------------------------------------------------
// ImDrawList
//-----------------------------------------------------------------------------
void ImDrawList::Clear()
{
CmdBuffer.resize(0);
IdxBuffer.resize(0);
VtxBuffer.resize(0);
Flags = ImDrawListFlags_AntiAliasedLines | ImDrawListFlags_AntiAliasedFill;
_VtxCurrentIdx = 0;
_VtxWritePtr = NULL;
_IdxWritePtr = NULL;
_ClipRectStack.resize(0);
_TextureIdStack.resize(0);
_Path.resize(0);
_ChannelsCurrent = 0;
_ChannelsCount = 1;
// NB: Do not clear channels so our allocations are re-used after the first frame.
}
void ImDrawList::ClearFreeMemory()
{
CmdBuffer.clear();
IdxBuffer.clear();
VtxBuffer.clear();
_VtxCurrentIdx = 0;
_VtxWritePtr = NULL;
_IdxWritePtr = NULL;
_ClipRectStack.clear();
_TextureIdStack.clear();
_Path.clear();
_ChannelsCurrent = 0;
_ChannelsCount = 1;
for (int i = 0; i < _Channels.Size; i++)
{
if (i == 0) memset(&_Channels[0], 0, sizeof(_Channels[0])); // channel 0 is a copy of CmdBuffer/IdxBuffer, don't destruct again
_Channels[i].CmdBuffer.clear();
_Channels[i].IdxBuffer.clear();
}
_Channels.clear();
}
// Using macros because C++ is a terrible language, we want guaranteed inline, no code in header, and no overhead in Debug builds
#define GetCurrentClipRect() (_ClipRectStack.Size ? _ClipRectStack.Data[_ClipRectStack.Size - 1] : _Data->ClipRectFullscreen)
#define GetCurrentTextureId() (_TextureIdStack.Size ? _TextureIdStack.Data[_TextureIdStack.Size - 1] : NULL)
void ImDrawList::AddDrawCmd()
{
ImDrawCmd draw_cmd;
draw_cmd.ClipRect = GetCurrentClipRect();
draw_cmd.TextureId = GetCurrentTextureId();
IM_ASSERT(draw_cmd.ClipRect.x <= draw_cmd.ClipRect.z && draw_cmd.ClipRect.y <= draw_cmd.ClipRect.w);
CmdBuffer.push_back(draw_cmd);
}
void ImDrawList::AddCallback(ImDrawCallback callback, void* callback_data)
{
ImDrawCmd* current_cmd = CmdBuffer.Size ? &CmdBuffer.back() : NULL;
if (!current_cmd || current_cmd->ElemCount != 0 || current_cmd->UserCallback != NULL)
{
AddDrawCmd();
current_cmd = &CmdBuffer.back();
}
current_cmd->UserCallback = callback;
current_cmd->UserCallbackData = callback_data;
AddDrawCmd(); // Force a new command after us (see comment below)
}
// Our scheme may appears a bit unusual, basically we want the most-common calls AddLine AddRect etc. to not have to perform any check so we always have a command ready in the stack.
// The cost of figuring out if a new command has to be added or if we can merge is paid in those Update** functions only.
void ImDrawList::UpdateClipRect()
{
// If current command is used with different settings we need to add a new command
const ImVec4 curr_clip_rect = GetCurrentClipRect();
ImDrawCmd* curr_cmd = CmdBuffer.Size > 0 ? &CmdBuffer.Data[CmdBuffer.Size - 1] : NULL;
if (!curr_cmd || (curr_cmd->ElemCount != 0 && memcmp(&curr_cmd->ClipRect, &curr_clip_rect, sizeof(ImVec4)) != 0) || curr_cmd->UserCallback != NULL)
{
AddDrawCmd();
return;
}
// Try to merge with previous command if it matches, else use current command
ImDrawCmd* prev_cmd = CmdBuffer.Size > 1 ? curr_cmd - 1 : NULL;
if (curr_cmd->ElemCount == 0 && prev_cmd && memcmp(&prev_cmd->ClipRect, &curr_clip_rect, sizeof(ImVec4)) == 0 && prev_cmd->TextureId == GetCurrentTextureId() && prev_cmd->UserCallback == NULL)
CmdBuffer.pop_back();
else
curr_cmd->ClipRect = curr_clip_rect;
}
void ImDrawList::UpdateTextureID()
{
// If current command is used with different settings we need to add a new command
const ImTextureID curr_texture_id = GetCurrentTextureId();
ImDrawCmd* curr_cmd = CmdBuffer.Size ? &CmdBuffer.back() : NULL;
if (!curr_cmd || (curr_cmd->ElemCount != 0 && curr_cmd->TextureId != curr_texture_id) || curr_cmd->UserCallback != NULL)
{
AddDrawCmd();
return;
}
// Try to merge with previous command if it matches, else use current command
ImDrawCmd* prev_cmd = CmdBuffer.Size > 1 ? curr_cmd - 1 : NULL;
if (curr_cmd->ElemCount == 0 && prev_cmd && prev_cmd->TextureId == curr_texture_id && memcmp(&prev_cmd->ClipRect, &GetCurrentClipRect(), sizeof(ImVec4)) == 0 && prev_cmd->UserCallback == NULL)
CmdBuffer.pop_back();
else
curr_cmd->TextureId = curr_texture_id;
}
#undef GetCurrentClipRect
#undef GetCurrentTextureId
// Render-level scissoring. This is passed down to your render function but not used for CPU-side coarse clipping. Prefer using higher-level ImGui::PushClipRect() to affect logic (hit-testing and widget culling)
void ImDrawList::PushClipRect(ImVec2 cr_min, ImVec2 cr_max, bool intersect_with_current_clip_rect)
{
ImVec4 cr(cr_min.x, cr_min.y, cr_max.x, cr_max.y);
if (intersect_with_current_clip_rect && _ClipRectStack.Size)
{
ImVec4 current = _ClipRectStack.Data[_ClipRectStack.Size - 1];
if (cr.x < current.x) cr.x = current.x;
if (cr.y < current.y) cr.y = current.y;
if (cr.z > current.z) cr.z = current.z;
if (cr.w > current.w) cr.w = current.w;
}
cr.z = ImMax(cr.x, cr.z);
cr.w = ImMax(cr.y, cr.w);
_ClipRectStack.push_back(cr);
UpdateClipRect();
}
void ImDrawList::PushClipRectFullScreen()
{
PushClipRect(ImVec2(_Data->ClipRectFullscreen.x, _Data->ClipRectFullscreen.y), ImVec2(_Data->ClipRectFullscreen.z, _Data->ClipRectFullscreen.w));
}
void ImDrawList::PopClipRect()
{
IM_ASSERT(_ClipRectStack.Size > 0);
_ClipRectStack.pop_back();
UpdateClipRect();
}
void ImDrawList::PushTextureID(ImTextureID texture_id)
{
_TextureIdStack.push_back(texture_id);
UpdateTextureID();
}
void ImDrawList::PopTextureID()
{
IM_ASSERT(_TextureIdStack.Size > 0);
_TextureIdStack.pop_back();
UpdateTextureID();
}
void ImDrawList::ChannelsSplit(int channels_count)
{
IM_ASSERT(_ChannelsCurrent == 0 && _ChannelsCount == 1);
int old_channels_count = _Channels.Size;
if (old_channels_count < channels_count)
_Channels.resize(channels_count);
_ChannelsCount = channels_count;
// _Channels[] (24/32 bytes each) hold storage that we'll swap with this->_CmdBuffer/_IdxBuffer
// The content of _Channels[0] at this point doesn't matter. We clear it to make state tidy in a debugger but we don't strictly need to.
// When we switch to the next channel, we'll copy _CmdBuffer/_IdxBuffer into _Channels[0] and then _Channels[1] into _CmdBuffer/_IdxBuffer
memset(&_Channels[0], 0, sizeof(ImDrawChannel));
for (int i = 1; i < channels_count; i++)
{
if (i >= old_channels_count)
{
IM_PLACEMENT_NEW(&_Channels[i])
ImDrawChannel();
}
else
{
_Channels[i].CmdBuffer.resize(0);
_Channels[i].IdxBuffer.resize(0);
}
if (_Channels[i].CmdBuffer.Size == 0)
{
ImDrawCmd draw_cmd;
draw_cmd.ClipRect = _ClipRectStack.back();
draw_cmd.TextureId = _TextureIdStack.back();
_Channels[i].CmdBuffer.push_back(draw_cmd);
}
}
}
void ImDrawList::ChannelsMerge()
{
// Note that we never use or rely on channels.Size because it is merely a buffer that we never shrink back to 0 to keep all sub-buffers ready for use.
if (_ChannelsCount <= 1)
return;
ChannelsSetCurrent(0);
if (CmdBuffer.Size && CmdBuffer.back().ElemCount == 0)
CmdBuffer.pop_back();
int new_cmd_buffer_count = 0, new_idx_buffer_count = 0;
for (int i = 1; i < _ChannelsCount; i++)
{
ImDrawChannel& ch = _Channels[i];
if (ch.CmdBuffer.Size && ch.CmdBuffer.back().ElemCount == 0)
ch.CmdBuffer.pop_back();
new_cmd_buffer_count += ch.CmdBuffer.Size;
new_idx_buffer_count += ch.IdxBuffer.Size;
}
CmdBuffer.resize(CmdBuffer.Size + new_cmd_buffer_count);
IdxBuffer.resize(IdxBuffer.Size + new_idx_buffer_count);
ImDrawCmd* cmd_write = CmdBuffer.Data + CmdBuffer.Size - new_cmd_buffer_count;
_IdxWritePtr = IdxBuffer.Data + IdxBuffer.Size - new_idx_buffer_count;
for (int i = 1; i < _ChannelsCount; i++)
{
ImDrawChannel& ch = _Channels[i];
if (int sz = ch.CmdBuffer.Size)
{
memcpy(cmd_write, ch.CmdBuffer.Data, sz * sizeof(ImDrawCmd));
cmd_write += sz;
}
if (int sz = ch.IdxBuffer.Size)
{
memcpy(_IdxWritePtr, ch.IdxBuffer.Data, sz * sizeof(ImDrawIdx));
_IdxWritePtr += sz;
}
}
UpdateClipRect(); // We call this instead of AddDrawCmd(), so that empty channels won't produce an extra draw call.
_ChannelsCount = 1;
}
void ImDrawList::ChannelsSetCurrent(int idx)
{
IM_ASSERT(idx < _ChannelsCount);
if (_ChannelsCurrent == idx) return;
memcpy(&_Channels.Data[_ChannelsCurrent].CmdBuffer, &CmdBuffer, sizeof(CmdBuffer)); // copy 12 bytes, four times
memcpy(&_Channels.Data[_ChannelsCurrent].IdxBuffer, &IdxBuffer, sizeof(IdxBuffer));
_ChannelsCurrent = idx;
memcpy(&CmdBuffer, &_Channels.Data[_ChannelsCurrent].CmdBuffer, sizeof(CmdBuffer));
memcpy(&IdxBuffer, &_Channels.Data[_ChannelsCurrent].IdxBuffer, sizeof(IdxBuffer));
_IdxWritePtr = IdxBuffer.Data + IdxBuffer.Size;
}
// NB: this can be called with negative count for removing primitives (as long as the result does not underflow)
void ImDrawList::PrimReserve(int idx_count, int vtx_count)
{
ImDrawCmd& draw_cmd = CmdBuffer.Data[CmdBuffer.Size - 1];
draw_cmd.ElemCount += idx_count;
int vtx_buffer_old_size = VtxBuffer.Size;
VtxBuffer.resize(vtx_buffer_old_size + vtx_count);
_VtxWritePtr = VtxBuffer.Data + vtx_buffer_old_size;
int idx_buffer_old_size = IdxBuffer.Size;
IdxBuffer.resize(idx_buffer_old_size + idx_count);
_IdxWritePtr = IdxBuffer.Data + idx_buffer_old_size;
}
// Fully unrolled with inline call to keep our debug builds decently fast.
void ImDrawList::PrimRect(const ImVec2& a, const ImVec2& c, ImU32 col)
{
ImVec2 b(c.x, a.y), d(a.x, c.y), uv(_Data->TexUvWhitePixel);
ImDrawIdx idx = (ImDrawIdx)_VtxCurrentIdx;
_IdxWritePtr[0] = idx;
_IdxWritePtr[1] = (ImDrawIdx)(idx + 1);
_IdxWritePtr[2] = (ImDrawIdx)(idx + 2);
_IdxWritePtr[3] = idx;
_IdxWritePtr[4] = (ImDrawIdx)(idx + 2);
_IdxWritePtr[5] = (ImDrawIdx)(idx + 3);
_VtxWritePtr[0].pos = a;
_VtxWritePtr[0].uv = uv;
_VtxWritePtr[0].col = col;
_VtxWritePtr[1].pos = b;
_VtxWritePtr[1].uv = uv;
_VtxWritePtr[1].col = col;
_VtxWritePtr[2].pos = c;
_VtxWritePtr[2].uv = uv;
_VtxWritePtr[2].col = col;
_VtxWritePtr[3].pos = d;
_VtxWritePtr[3].uv = uv;
_VtxWritePtr[3].col = col;
_VtxWritePtr += 4;
_VtxCurrentIdx += 4;
_IdxWritePtr += 6;
}
void ImDrawList::PrimRectUV(const ImVec2& a, const ImVec2& c, const ImVec2& uv_a, const ImVec2& uv_c, ImU32 col)
{
ImVec2 b(c.x, a.y), d(a.x, c.y), uv_b(uv_c.x, uv_a.y), uv_d(uv_a.x, uv_c.y);
ImDrawIdx idx = (ImDrawIdx)_VtxCurrentIdx;
_IdxWritePtr[0] = idx;
_IdxWritePtr[1] = (ImDrawIdx)(idx + 1);
_IdxWritePtr[2] = (ImDrawIdx)(idx + 2);
_IdxWritePtr[3] = idx;
_IdxWritePtr[4] = (ImDrawIdx)(idx + 2);
_IdxWritePtr[5] = (ImDrawIdx)(idx + 3);
_VtxWritePtr[0].pos = a;
_VtxWritePtr[0].uv = uv_a;
_VtxWritePtr[0].col = col;
_VtxWritePtr[1].pos = b;
_VtxWritePtr[1].uv = uv_b;
_VtxWritePtr[1].col = col;
_VtxWritePtr[2].pos = c;
_VtxWritePtr[2].uv = uv_c;
_VtxWritePtr[2].col = col;
_VtxWritePtr[3].pos = d;
_VtxWritePtr[3].uv = uv_d;
_VtxWritePtr[3].col = col;
_VtxWritePtr += 4;
_VtxCurrentIdx += 4;
_IdxWritePtr += 6;
}
void ImDrawList::PrimQuadUV(const ImVec2& a, const ImVec2& b, const ImVec2& c, const ImVec2& d, const ImVec2& uv_a, const ImVec2& uv_b, const ImVec2& uv_c, const ImVec2& uv_d, ImU32 col)
{
ImDrawIdx idx = (ImDrawIdx)_VtxCurrentIdx;
_IdxWritePtr[0] = idx;
_IdxWritePtr[1] = (ImDrawIdx)(idx + 1);
_IdxWritePtr[2] = (ImDrawIdx)(idx + 2);
_IdxWritePtr[3] = idx;
_IdxWritePtr[4] = (ImDrawIdx)(idx + 2);
_IdxWritePtr[5] = (ImDrawIdx)(idx + 3);
_VtxWritePtr[0].pos = a;
_VtxWritePtr[0].uv = uv_a;
_VtxWritePtr[0].col = col;
_VtxWritePtr[1].pos = b;
_VtxWritePtr[1].uv = uv_b;
_VtxWritePtr[1].col = col;
_VtxWritePtr[2].pos = c;
_VtxWritePtr[2].uv = uv_c;
_VtxWritePtr[2].col = col;
_VtxWritePtr[3].pos = d;
_VtxWritePtr[3].uv = uv_d;
_VtxWritePtr[3].col = col;
_VtxWritePtr += 4;
_VtxCurrentIdx += 4;
_IdxWritePtr += 6;
}
// TODO: Thickness anti-aliased lines cap are missing their AA fringe.
void ImDrawList::AddPolyline(const ImVec2* points, const int points_count, ImU32 col, bool closed, float thickness)
{
if (points_count < 2)
return;
const ImVec2 uv = _Data->TexUvWhitePixel;
int count = points_count;
if (!closed)
count = points_count - 1;
const bool thick_line = thickness > 1.0f;
if (Flags & ImDrawListFlags_AntiAliasedLines)
{
// Anti-aliased stroke
const float AA_SIZE = 1.0f;
const ImU32 col_trans = col & ~IM_COL32_A_MASK;
const int idx_count = thick_line ? count * 18 : count * 12;
const int vtx_count = thick_line ? points_count * 4 : points_count * 3;
PrimReserve(idx_count, vtx_count);
// Temporary buffer
ImVec2* temp_normals = (ImVec2*)alloca(points_count * (thick_line ? 5 : 3) * sizeof(ImVec2));
ImVec2* temp_points = temp_normals + points_count;
for (int i1 = 0; i1 < count; i1++)
{
const int i2 = (i1 + 1) == points_count ? 0 : i1 + 1;
ImVec2 diff = points[i2] - points[i1];
diff *= ImInvLength(diff, 1.0f);
temp_normals[i1].x = diff.y;
temp_normals[i1].y = -diff.x;
}
if (!closed)
temp_normals[points_count - 1] = temp_normals[points_count - 2];
if (!thick_line)
{
if (!closed)
{
temp_points[0] = points[0] + temp_normals[0] * AA_SIZE;
temp_points[1] = points[0] - temp_normals[0] * AA_SIZE;
temp_points[(points_count - 1) * 2 + 0] = points[points_count - 1] + temp_normals[points_count - 1] * AA_SIZE;
temp_points[(points_count - 1) * 2 + 1] = points[points_count - 1] - temp_normals[points_count - 1] * AA_SIZE;
}
// FIXME-OPT: Merge the different loops, possibly remove the temporary buffer.
unsigned int idx1 = _VtxCurrentIdx;
for (int i1 = 0; i1 < count; i1++)
{
const int i2 = (i1 + 1) == points_count ? 0 : i1 + 1;
unsigned int idx2 = (i1 + 1) == points_count ? _VtxCurrentIdx : idx1 + 3;
// Average normals
ImVec2 dm = (temp_normals[i1] + temp_normals[i2]) * 0.5f;
float dmr2 = dm.x * dm.x + dm.y * dm.y;
if (dmr2 > 0.000001f)
{
float scale = 1.0f / dmr2;
if (scale > 100.0f) scale = 100.0f;
dm *= scale;
}
dm *= AA_SIZE;
temp_points[i2 * 2 + 0] = points[i2] + dm;
temp_points[i2 * 2 + 1] = points[i2] - dm;
// Add indexes
_IdxWritePtr[0] = (ImDrawIdx)(idx2 + 0);
_IdxWritePtr[1] = (ImDrawIdx)(idx1 + 0);
_IdxWritePtr[2] = (ImDrawIdx)(idx1 + 2);
_IdxWritePtr[3] = (ImDrawIdx)(idx1 + 2);
_IdxWritePtr[4] = (ImDrawIdx)(idx2 + 2);
_IdxWritePtr[5] = (ImDrawIdx)(idx2 + 0);
_IdxWritePtr[6] = (ImDrawIdx)(idx2 + 1);
_IdxWritePtr[7] = (ImDrawIdx)(idx1 + 1);
_IdxWritePtr[8] = (ImDrawIdx)(idx1 + 0);
_IdxWritePtr[9] = (ImDrawIdx)(idx1 + 0);
_IdxWritePtr[10] = (ImDrawIdx)(idx2 + 0);
_IdxWritePtr[11] = (ImDrawIdx)(idx2 + 1);
_IdxWritePtr += 12;
idx1 = idx2;
}
// Add vertexes
for (int i = 0; i < points_count; i++)
{
_VtxWritePtr[0].pos = points[i];
_VtxWritePtr[0].uv = uv;
_VtxWritePtr[0].col = col;
_VtxWritePtr[1].pos = temp_points[i * 2 + 0];
_VtxWritePtr[1].uv = uv;
_VtxWritePtr[1].col = col_trans;
_VtxWritePtr[2].pos = temp_points[i * 2 + 1];
_VtxWritePtr[2].uv = uv;
_VtxWritePtr[2].col = col_trans;
_VtxWritePtr += 3;
}
}
else
{
const float half_inner_thickness = (thickness - AA_SIZE) * 0.5f;
if (!closed)
{
temp_points[0] = points[0] + temp_normals[0] * (half_inner_thickness + AA_SIZE);
temp_points[1] = points[0] + temp_normals[0] * (half_inner_thickness);
temp_points[2] = points[0] - temp_normals[0] * (half_inner_thickness);
temp_points[3] = points[0] - temp_normals[0] * (half_inner_thickness + AA_SIZE);
temp_points[(points_count - 1) * 4 + 0] = points[points_count - 1] + temp_normals[points_count - 1] * (half_inner_thickness + AA_SIZE);
temp_points[(points_count - 1) * 4 + 1] = points[points_count - 1] + temp_normals[points_count - 1] * (half_inner_thickness);
temp_points[(points_count - 1) * 4 + 2] = points[points_count - 1] - temp_normals[points_count - 1] * (half_inner_thickness);
temp_points[(points_count - 1) * 4 + 3] = points[points_count - 1] - temp_normals[points_count - 1] * (half_inner_thickness + AA_SIZE);
}
// FIXME-OPT: Merge the different loops, possibly remove the temporary buffer.
unsigned int idx1 = _VtxCurrentIdx;
for (int i1 = 0; i1 < count; i1++)
{
const int i2 = (i1 + 1) == points_count ? 0 : i1 + 1;
unsigned int idx2 = (i1 + 1) == points_count ? _VtxCurrentIdx : idx1 + 4;
// Average normals
ImVec2 dm = (temp_normals[i1] + temp_normals[i2]) * 0.5f;
float dmr2 = dm.x * dm.x + dm.y * dm.y;
if (dmr2 > 0.000001f)
{
float scale = 1.0f / dmr2;
if (scale > 100.0f) scale = 100.0f;
dm *= scale;
}
ImVec2 dm_out = dm * (half_inner_thickness + AA_SIZE);
ImVec2 dm_in = dm * half_inner_thickness;
temp_points[i2 * 4 + 0] = points[i2] + dm_out;
temp_points[i2 * 4 + 1] = points[i2] + dm_in;
temp_points[i2 * 4 + 2] = points[i2] - dm_in;
temp_points[i2 * 4 + 3] = points[i2] - dm_out;
// Add indexes
_IdxWritePtr[0] = (ImDrawIdx)(idx2 + 1);
_IdxWritePtr[1] = (ImDrawIdx)(idx1 + 1);
_IdxWritePtr[2] = (ImDrawIdx)(idx1 + 2);
_IdxWritePtr[3] = (ImDrawIdx)(idx1 + 2);
_IdxWritePtr[4] = (ImDrawIdx)(idx2 + 2);
_IdxWritePtr[5] = (ImDrawIdx)(idx2 + 1);
_IdxWritePtr[6] = (ImDrawIdx)(idx2 + 1);
_IdxWritePtr[7] = (ImDrawIdx)(idx1 + 1);
_IdxWritePtr[8] = (ImDrawIdx)(idx1 + 0);
_IdxWritePtr[9] = (ImDrawIdx)(idx1 + 0);
_IdxWritePtr[10] = (ImDrawIdx)(idx2 + 0);
_IdxWritePtr[11] = (ImDrawIdx)(idx2 + 1);
_IdxWritePtr[12] = (ImDrawIdx)(idx2 + 2);
_IdxWritePtr[13] = (ImDrawIdx)(idx1 + 2);
_IdxWritePtr[14] = (ImDrawIdx)(idx1 + 3);
_IdxWritePtr[15] = (ImDrawIdx)(idx1 + 3);
_IdxWritePtr[16] = (ImDrawIdx)(idx2 + 3);
_IdxWritePtr[17] = (ImDrawIdx)(idx2 + 2);
_IdxWritePtr += 18;
idx1 = idx2;
}
// Add vertexes
for (int i = 0; i < points_count; i++)
{
_VtxWritePtr[0].pos = temp_points[i * 4 + 0];
_VtxWritePtr[0].uv = uv;
_VtxWritePtr[0].col = col_trans;
_VtxWritePtr[1].pos = temp_points[i * 4 + 1];
_VtxWritePtr[1].uv = uv;
_VtxWritePtr[1].col = col;
_VtxWritePtr[2].pos = temp_points[i * 4 + 2];
_VtxWritePtr[2].uv = uv;
_VtxWritePtr[2].col = col;
_VtxWritePtr[3].pos = temp_points[i * 4 + 3];
_VtxWritePtr[3].uv = uv;
_VtxWritePtr[3].col = col_trans;
_VtxWritePtr += 4;
}
}
_VtxCurrentIdx += (ImDrawIdx)vtx_count;
}
else
{
// Non Anti-aliased Stroke
const int idx_count = count * 6;
const int vtx_count = count * 4; // FIXME-OPT: Not sharing edges
PrimReserve(idx_count, vtx_count);
for (int i1 = 0; i1 < count; i1++)
{
const int i2 = (i1 + 1) == points_count ? 0 : i1 + 1;
const ImVec2& p1 = points[i1];
const ImVec2& p2 = points[i2];
ImVec2 diff = p2 - p1;
diff *= ImInvLength(diff, 1.0f);
const float dx = diff.x * (thickness * 0.5f);
const float dy = diff.y * (thickness * 0.5f);
_VtxWritePtr[0].pos.x = p1.x + dy;
_VtxWritePtr[0].pos.y = p1.y - dx;
_VtxWritePtr[0].uv = uv;
_VtxWritePtr[0].col = col;
_VtxWritePtr[1].pos.x = p2.x + dy;
_VtxWritePtr[1].pos.y = p2.y - dx;
_VtxWritePtr[1].uv = uv;
_VtxWritePtr[1].col = col;
_VtxWritePtr[2].pos.x = p2.x - dy;
_VtxWritePtr[2].pos.y = p2.y + dx;
_VtxWritePtr[2].uv = uv;
_VtxWritePtr[2].col = col;
_VtxWritePtr[3].pos.x = p1.x - dy;
_VtxWritePtr[3].pos.y = p1.y + dx;
_VtxWritePtr[3].uv = uv;
_VtxWritePtr[3].col = col;
_VtxWritePtr += 4;
_IdxWritePtr[0] = (ImDrawIdx)(_VtxCurrentIdx);
_IdxWritePtr[1] = (ImDrawIdx)(_VtxCurrentIdx + 1);
_IdxWritePtr[2] = (ImDrawIdx)(_VtxCurrentIdx + 2);
_IdxWritePtr[3] = (ImDrawIdx)(_VtxCurrentIdx);
_IdxWritePtr[4] = (ImDrawIdx)(_VtxCurrentIdx + 2);
_IdxWritePtr[5] = (ImDrawIdx)(_VtxCurrentIdx + 3);
_IdxWritePtr += 6;
_VtxCurrentIdx += 4;
}
}
}
void ImDrawList::AddConvexPolyFilled(const ImVec2* points, const int points_count, ImU32 col)
{
const ImVec2 uv = _Data->TexUvWhitePixel;
if (Flags & ImDrawListFlags_AntiAliasedFill)
{
// Anti-aliased Fill
const float AA_SIZE = 1.0f;
const ImU32 col_trans = col & ~IM_COL32_A_MASK;
const int idx_count = (points_count - 2) * 3 + points_count * 6;
const int vtx_count = (points_count * 2);
PrimReserve(idx_count, vtx_count);
// Add indexes for fill
unsigned int vtx_inner_idx = _VtxCurrentIdx;
unsigned int vtx_outer_idx = _VtxCurrentIdx + 1;
for (int i = 2; i < points_count; i++)
{
_IdxWritePtr[0] = (ImDrawIdx)(vtx_inner_idx);
_IdxWritePtr[1] = (ImDrawIdx)(vtx_inner_idx + ((i - 1) << 1));
_IdxWritePtr[2] = (ImDrawIdx)(vtx_inner_idx + (i << 1));
_IdxWritePtr += 3;
}
// Compute normals
ImVec2* temp_normals = (ImVec2*)alloca(points_count * sizeof(ImVec2));
for (int i0 = points_count - 1, i1 = 0; i1 < points_count; i0 = i1++)
{
const ImVec2& p0 = points[i0];
const ImVec2& p1 = points[i1];
ImVec2 diff = p1 - p0;
diff *= ImInvLength(diff, 1.0f);
temp_normals[i0].x = diff.y;
temp_normals[i0].y = -diff.x;
}
for (int i0 = points_count - 1, i1 = 0; i1 < points_count; i0 = i1++)
{
// Average normals
const ImVec2& n0 = temp_normals[i0];
const ImVec2& n1 = temp_normals[i1];
ImVec2 dm = (n0 + n1) * 0.5f;
float dmr2 = dm.x * dm.x + dm.y * dm.y;
if (dmr2 > 0.000001f)
{
float scale = 1.0f / dmr2;
if (scale > 100.0f) scale = 100.0f;
dm *= scale;
}
dm *= AA_SIZE * 0.5f;
// Add vertices
_VtxWritePtr[0].pos = (points[i1] - dm);
_VtxWritePtr[0].uv = uv;
_VtxWritePtr[0].col = col; // Inner
_VtxWritePtr[1].pos = (points[i1] + dm);
_VtxWritePtr[1].uv = uv;
_VtxWritePtr[1].col = col_trans; // Outer
_VtxWritePtr += 2;
// Add indexes for fringes
_IdxWritePtr[0] = (ImDrawIdx)(vtx_inner_idx + (i1 << 1));
_IdxWritePtr[1] = (ImDrawIdx)(vtx_inner_idx + (i0 << 1));
_IdxWritePtr[2] = (ImDrawIdx)(vtx_outer_idx + (i0 << 1));
_IdxWritePtr[3] = (ImDrawIdx)(vtx_outer_idx + (i0 << 1));
_IdxWritePtr[4] = (ImDrawIdx)(vtx_outer_idx + (i1 << 1));
_IdxWritePtr[5] = (ImDrawIdx)(vtx_inner_idx + (i1 << 1));
_IdxWritePtr += 6;
}
_VtxCurrentIdx += (ImDrawIdx)vtx_count;
}
else
{
// Non Anti-aliased Fill
const int idx_count = (points_count - 2) * 3;
const int vtx_count = points_count;
PrimReserve(idx_count, vtx_count);
for (int i = 0; i < vtx_count; i++)
{
_VtxWritePtr[0].pos = points[i];
_VtxWritePtr[0].uv = uv;
_VtxWritePtr[0].col = col;
_VtxWritePtr++;
}
for (int i = 2; i < points_count; i++)
{
_IdxWritePtr[0] = (ImDrawIdx)(_VtxCurrentIdx);
_IdxWritePtr[1] = (ImDrawIdx)(_VtxCurrentIdx + i - 1);
_IdxWritePtr[2] = (ImDrawIdx)(_VtxCurrentIdx + i);
_IdxWritePtr += 3;
}
_VtxCurrentIdx += (ImDrawIdx)vtx_count;
}
}
void ImDrawList::PathArcToFast(const ImVec2& centre, float radius, int a_min_of_12, int a_max_of_12)
{
if (radius == 0.0f || a_min_of_12 > a_max_of_12)
{
_Path.push_back(centre);
return;
}
_Path.reserve(_Path.Size + (a_max_of_12 - a_min_of_12 + 1));
for (int a = a_min_of_12; a <= a_max_of_12; a++)
{
const ImVec2& c = _Data->CircleVtx12[a % IM_ARRAYSIZE(_Data->CircleVtx12)];
_Path.push_back(ImVec2(centre.x + c.x * radius, centre.y + c.y * radius));
}
}
void ImDrawList::PathArcTo(const ImVec2& centre, float radius, float a_min, float a_max, int num_segments)
{
if (radius == 0.0f)
{
_Path.push_back(centre);
return;
}
_Path.reserve(_Path.Size + (num_segments + 1));
for (int i = 0; i <= num_segments; i++)
{
const float a = a_min + ((float)i / (float)num_segments) * (a_max - a_min);
_Path.push_back(ImVec2(centre.x + cosf(a) * radius, centre.y + sinf(a) * radius));
}
}
static void PathBezierToCasteljau(ImVector<ImVec2>* path, float x1, float y1, float x2, float y2, float x3, float y3, float x4, float y4, float tess_tol, int level)
{
float dx = x4 - x1;
float dy = y4 - y1;
float d2 = ((x2 - x4) * dy - (y2 - y4) * dx);
float d3 = ((x3 - x4) * dy - (y3 - y4) * dx);
d2 = (d2 >= 0) ? d2 : -d2;
d3 = (d3 >= 0) ? d3 : -d3;
if ((d2 + d3) * (d2 + d3) < tess_tol * (dx * dx + dy * dy))
{
path->push_back(ImVec2(x4, y4));
}
else if (level < 10)
{
float x12 = (x1 + x2) * 0.5f, y12 = (y1 + y2) * 0.5f;
float x23 = (x2 + x3) * 0.5f, y23 = (y2 + y3) * 0.5f;
float x34 = (x3 + x4) * 0.5f, y34 = (y3 + y4) * 0.5f;
float x123 = (x12 + x23) * 0.5f, y123 = (y12 + y23) * 0.5f;
float x234 = (x23 + x34) * 0.5f, y234 = (y23 + y34) * 0.5f;
float x1234 = (x123 + x234) * 0.5f, y1234 = (y123 + y234) * 0.5f;
PathBezierToCasteljau(path, x1, y1, x12, y12, x123, y123, x1234, y1234, tess_tol, level + 1);
PathBezierToCasteljau(path, x1234, y1234, x234, y234, x34, y34, x4, y4, tess_tol, level + 1);
}
}
void ImDrawList::PathBezierCurveTo(const ImVec2& p2, const ImVec2& p3, const ImVec2& p4, int num_segments)
{
ImVec2 p1 = _Path.back();
if (num_segments == 0)
{
// Auto-tessellated
PathBezierToCasteljau(&_Path, p1.x, p1.y, p2.x, p2.y, p3.x, p3.y, p4.x, p4.y, _Data->CurveTessellationTol, 0);
}
else
{
float t_step = 1.0f / (float)num_segments;
for (int i_step = 1; i_step <= num_segments; i_step++)
{
float t = t_step * i_step;
float u = 1.0f - t;
float w1 = u * u * u;
float w2 = 3 * u * u * t;
float w3 = 3 * u * t * t;
float w4 = t * t * t;
_Path.push_back(ImVec2(w1 * p1.x + w2 * p2.x + w3 * p3.x + w4 * p4.x, w1 * p1.y + w2 * p2.y + w3 * p3.y + w4 * p4.y));
}
}
}
void ImDrawList::PathRect(const ImVec2& a, const ImVec2& b, float rounding, int rounding_corners)
{
rounding = ImMin(rounding, fabsf(b.x - a.x) * (((rounding_corners & ImDrawCornerFlags_Top) == ImDrawCornerFlags_Top) || ((rounding_corners & ImDrawCornerFlags_Bot) == ImDrawCornerFlags_Bot) ? 0.5f : 1.0f) - 1.0f);
rounding = ImMin(rounding, fabsf(b.y - a.y) * (((rounding_corners & ImDrawCornerFlags_Left) == ImDrawCornerFlags_Left) || ((rounding_corners & ImDrawCornerFlags_Right) == ImDrawCornerFlags_Right) ? 0.5f : 1.0f) - 1.0f);
if (rounding <= 0.0f || rounding_corners == 0)
{
PathLineTo(a);
PathLineTo(ImVec2(b.x, a.y));
PathLineTo(b);
PathLineTo(ImVec2(a.x, b.y));
}
else
{
const float rounding_tl = (rounding_corners & ImDrawCornerFlags_TopLeft) ? rounding : 0.0f;
const float rounding_tr = (rounding_corners & ImDrawCornerFlags_TopRight) ? rounding : 0.0f;
const float rounding_br = (rounding_corners & ImDrawCornerFlags_BotRight) ? rounding : 0.0f;
const float rounding_bl = (rounding_corners & ImDrawCornerFlags_BotLeft) ? rounding : 0.0f;
PathArcToFast(ImVec2(a.x + rounding_tl, a.y + rounding_tl), rounding_tl, 6, 9);
PathArcToFast(ImVec2(b.x - rounding_tr, a.y + rounding_tr), rounding_tr, 9, 12);
PathArcToFast(ImVec2(b.x - rounding_br, b.y - rounding_br), rounding_br, 0, 3);
PathArcToFast(ImVec2(a.x + rounding_bl, b.y - rounding_bl), rounding_bl, 3, 6);
}
}
void ImDrawList::AddLine(const ImVec2& a, const ImVec2& b, ImU32 col, float thickness)
{
if ((col & IM_COL32_A_MASK) == 0)
return;
PathLineTo(a + ImVec2(0.5f, 0.5f));
PathLineTo(b + ImVec2(0.5f, 0.5f));
PathStroke(col, false, thickness);
}
// a: upper-left, b: lower-right. we don't render 1 px sized rectangles properly.
void ImDrawList::AddRect(const ImVec2& a, const ImVec2& b, ImU32 col, float rounding, int rounding_corners_flags, float thickness)
{
if ((col & IM_COL32_A_MASK) == 0)
return;
PathRect(a + ImVec2(0.5f, 0.5f), b - ImVec2(0.5f, 0.5f), rounding, rounding_corners_flags);
PathStroke(col, true, thickness);
}
void ImDrawList::AddRectFilled(const ImVec2& a, const ImVec2& b, ImU32 col, float rounding, int rounding_corners_flags)
{
if ((col & IM_COL32_A_MASK) == 0)
return;
if (rounding > 0.0f)
{
PathRect(a, b, rounding, rounding_corners_flags);
PathFillConvex(col);
}
else
{
PrimReserve(6, 4);
PrimRect(a, b, col);
}
}
void ImDrawList::AddRectFilledMultiColor(const ImVec2& a, const ImVec2& c, ImU32 col_upr_left, ImU32 col_upr_right, ImU32 col_bot_right, ImU32 col_bot_left)
{
if (((col_upr_left | col_upr_right | col_bot_right | col_bot_left) & IM_COL32_A_MASK) == 0)
return;
const ImVec2 uv = _Data->TexUvWhitePixel;
PrimReserve(6, 4);
PrimWriteIdx((ImDrawIdx)(_VtxCurrentIdx));
PrimWriteIdx((ImDrawIdx)(_VtxCurrentIdx + 1));
PrimWriteIdx((ImDrawIdx)(_VtxCurrentIdx + 2));
PrimWriteIdx((ImDrawIdx)(_VtxCurrentIdx));
PrimWriteIdx((ImDrawIdx)(_VtxCurrentIdx + 2));
PrimWriteIdx((ImDrawIdx)(_VtxCurrentIdx + 3));
PrimWriteVtx(a, uv, col_upr_left);
PrimWriteVtx(ImVec2(c.x, a.y), uv, col_upr_right);
PrimWriteVtx(c, uv, col_bot_right);
PrimWriteVtx(ImVec2(a.x, c.y), uv, col_bot_left);
}
void ImDrawList::AddQuad(const ImVec2& a, const ImVec2& b, const ImVec2& c, const ImVec2& d, ImU32 col, float thickness)
{
if ((col & IM_COL32_A_MASK) == 0)
return;
PathLineTo(a);
PathLineTo(b);
PathLineTo(c);
PathLineTo(d);
PathStroke(col, true, thickness);
}
void ImDrawList::AddQuadFilled(const ImVec2& a, const ImVec2& b, const ImVec2& c, const ImVec2& d, ImU32 col)
{
if ((col & IM_COL32_A_MASK) == 0)
return;
PathLineTo(a);
PathLineTo(b);
PathLineTo(c);
PathLineTo(d);
PathFillConvex(col);
}
void ImDrawList::AddTriangle(const ImVec2& a, const ImVec2& b, const ImVec2& c, ImU32 col, float thickness)
{
if ((col & IM_COL32_A_MASK) == 0)
return;
PathLineTo(a);
PathLineTo(b);
PathLineTo(c);
PathStroke(col, true, thickness);
}
void ImDrawList::AddTriangleFilled(const ImVec2& a, const ImVec2& b, const ImVec2& c, ImU32 col)
{
if ((col & IM_COL32_A_MASK) == 0)
return;
PathLineTo(a);
PathLineTo(b);
PathLineTo(c);
PathFillConvex(col);
}
void ImDrawList::AddCircle(const ImVec2& centre, float radius, ImU32 col, int num_segments, float thickness)
{
if ((col & IM_COL32_A_MASK) == 0)
return;
const float a_max = IM_PI * 2.0f * ((float)num_segments - 1.0f) / (float)num_segments;
PathArcTo(centre, radius - 0.5f, 0.0f, a_max, num_segments);
PathStroke(col, true, thickness);
}
void ImDrawList::AddCircleFilled(const ImVec2& centre, float radius, ImU32 col, int num_segments)
{
if ((col & IM_COL32_A_MASK) == 0)
return;
const float a_max = IM_PI * 2.0f * ((float)num_segments - 1.0f) / (float)num_segments;
PathArcTo(centre, radius, 0.0f, a_max, num_segments);
PathFillConvex(col);
}
void ImDrawList::AddBezierCurve(const ImVec2& pos0, const ImVec2& cp0, const ImVec2& cp1, const ImVec2& pos1, ImU32 col, float thickness, int num_segments)
{
if ((col & IM_COL32_A_MASK) == 0)
return;
PathLineTo(pos0);
PathBezierCurveTo(cp0, cp1, pos1, num_segments);
PathStroke(col, false, thickness);
}
void ImDrawList::AddText(const ImFont* font, float font_size, const ImVec2& pos, ImU32 col, const char* text_begin, const char* text_end, float wrap_width, const ImVec4* cpu_fine_clip_rect)
{
if ((col & IM_COL32_A_MASK) == 0)
return;
if (text_end == NULL)
text_end = text_begin + strlen(text_begin);
if (text_begin == text_end)
return;
// Pull default font/size from the shared ImDrawListSharedData instance
if (font == NULL)
font = _Data->Font;
if (font_size == 0.0f)
font_size = _Data->FontSize;
IM_ASSERT(font->ContainerAtlas->TexID == _TextureIdStack.back()); // Use high-level ImGui::PushFont() or low-level ImDrawList::PushTextureId() to change font.
ImVec4 clip_rect = _ClipRectStack.back();
if (cpu_fine_clip_rect)
{
clip_rect.x = ImMax(clip_rect.x, cpu_fine_clip_rect->x);
clip_rect.y = ImMax(clip_rect.y, cpu_fine_clip_rect->y);
clip_rect.z = ImMin(clip_rect.z, cpu_fine_clip_rect->z);
clip_rect.w = ImMin(clip_rect.w, cpu_fine_clip_rect->w);
}
font->RenderText(this, font_size, pos, col, clip_rect, text_begin, text_end, wrap_width, cpu_fine_clip_rect != NULL);
}
void ImDrawList::AddText(const ImVec2& pos, ImU32 col, const char* text_begin, const char* text_end)
{
AddText(NULL, 0.0f, pos, col, text_begin, text_end);
}
void ImDrawList::AddImage(ImTextureID user_texture_id, const ImVec2& a, const ImVec2& b, const ImVec2& uv_a, const ImVec2& uv_b, ImU32 col)
{
if ((col & IM_COL32_A_MASK) == 0)
return;
const bool push_texture_id = _TextureIdStack.empty() || user_texture_id != _TextureIdStack.back();
if (push_texture_id)
PushTextureID(user_texture_id);
PrimReserve(6, 4);
PrimRectUV(a, b, uv_a, uv_b, col);
if (push_texture_id)
PopTextureID();
}
void ImDrawList::AddImageQuad(ImTextureID user_texture_id, const ImVec2& a, const ImVec2& b, const ImVec2& c, const ImVec2& d, const ImVec2& uv_a, const ImVec2& uv_b, const ImVec2& uv_c, const ImVec2& uv_d, ImU32 col)
{
if ((col & IM_COL32_A_MASK) == 0)
return;
const bool push_texture_id = _TextureIdStack.empty() || user_texture_id != _TextureIdStack.back();
if (push_texture_id)
PushTextureID(user_texture_id);
PrimReserve(6, 4);
PrimQuadUV(a, b, c, d, uv_a, uv_b, uv_c, uv_d, col);
if (push_texture_id)
PopTextureID();
}
void ImDrawList::AddImageRounded(ImTextureID user_texture_id, const ImVec2& a, const ImVec2& b, const ImVec2& uv_a, const ImVec2& uv_b, ImU32 col, float rounding, int rounding_corners)
{
if ((col & IM_COL32_A_MASK) == 0)
return;
if (rounding <= 0.0f || (rounding_corners & ImDrawCornerFlags_All) == 0)
{
AddImage(user_texture_id, a, b, uv_a, uv_b, col);
return;
}
const bool push_texture_id = _TextureIdStack.empty() || user_texture_id != _TextureIdStack.back();
if (push_texture_id)
PushTextureID(user_texture_id);
int vert_start_idx = VtxBuffer.Size;
PathRect(a, b, rounding, rounding_corners);
PathFillConvex(col);
int vert_end_idx = VtxBuffer.Size;
ImGui::ShadeVertsLinearUV(VtxBuffer.Data + vert_start_idx, VtxBuffer.Data + vert_end_idx, a, b, uv_a, uv_b, true);
if (push_texture_id)
PopTextureID();
}
//-----------------------------------------------------------------------------
// ImDrawData
//-----------------------------------------------------------------------------
// For backward compatibility: convert all buffers from indexed to de-indexed, in case you cannot render indexed. Note: this is slow and most likely a waste of resources. Always prefer indexed rendering!
void ImDrawData::DeIndexAllBuffers()
{
ImVector<ImDrawVert> new_vtx_buffer;
TotalVtxCount = TotalIdxCount = 0;
for (int i = 0; i < CmdListsCount; i++)
{
ImDrawList* cmd_list = CmdLists[i];
if (cmd_list->IdxBuffer.empty())
continue;
new_vtx_buffer.resize(cmd_list->IdxBuffer.Size);
for (int j = 0; j < cmd_list->IdxBuffer.Size; j++)
new_vtx_buffer[j] = cmd_list->VtxBuffer[cmd_list->IdxBuffer[j]];
cmd_list->VtxBuffer.swap(new_vtx_buffer);
cmd_list->IdxBuffer.resize(0);
TotalVtxCount += cmd_list->VtxBuffer.Size;
}
}
// Helper to scale the ClipRect field of each ImDrawCmd. Use if your final output buffer is at a different scale than ImGui expects, or if there is a difference between your window resolution and framebuffer resolution.
void ImDrawData::ScaleClipRects(const ImVec2& scale)
{
for (int i = 0; i < CmdListsCount; i++)
{
ImDrawList* cmd_list = CmdLists[i];
for (int cmd_i = 0; cmd_i < cmd_list->CmdBuffer.Size; cmd_i++)
{
ImDrawCmd* cmd = &cmd_list->CmdBuffer[cmd_i];
cmd->ClipRect = ImVec4(cmd->ClipRect.x * scale.x, cmd->ClipRect.y * scale.y, cmd->ClipRect.z * scale.x, cmd->ClipRect.w * scale.y);
}
}
}
//-----------------------------------------------------------------------------
// Shade functions
//-----------------------------------------------------------------------------
// Generic linear color gradient, write to RGB fields, leave A untouched.
void ImGui::ShadeVertsLinearColorGradientKeepAlpha(ImDrawVert* vert_start, ImDrawVert* vert_end, ImVec2 gradient_p0, ImVec2 gradient_p1, ImU32 col0, ImU32 col1)
{
ImVec2 gradient_extent = gradient_p1 - gradient_p0;
float gradient_inv_length2 = 1.0f / ImLengthSqr(gradient_extent);
for (ImDrawVert* vert = vert_start; vert < vert_end; vert++)
{
float d = ImDot(vert->pos - gradient_p0, gradient_extent);
float t = ImClamp(d * gradient_inv_length2, 0.0f, 1.0f);
int r = ImLerp((int)(col0 >> IM_COL32_R_SHIFT) & 0xFF, (int)(col1 >> IM_COL32_R_SHIFT) & 0xFF, t);
int g = ImLerp((int)(col0 >> IM_COL32_G_SHIFT) & 0xFF, (int)(col1 >> IM_COL32_G_SHIFT) & 0xFF, t);
int b = ImLerp((int)(col0 >> IM_COL32_B_SHIFT) & 0xFF, (int)(col1 >> IM_COL32_B_SHIFT) & 0xFF, t);
vert->col = (r << IM_COL32_R_SHIFT) | (g << IM_COL32_G_SHIFT) | (b << IM_COL32_B_SHIFT) | (vert->col & IM_COL32_A_MASK);
}
}
// Scan and shade backward from the end of given vertices. Assume vertices are text only (= vert_start..vert_end going left to right) so we can break as soon as we are out the gradient bounds.
void ImGui::ShadeVertsLinearAlphaGradientForLeftToRightText(ImDrawVert* vert_start, ImDrawVert* vert_end, float gradient_p0_x, float gradient_p1_x)
{
float gradient_extent_x = gradient_p1_x - gradient_p0_x;
float gradient_inv_length2 = 1.0f / (gradient_extent_x * gradient_extent_x);
int full_alpha_count = 0;
for (ImDrawVert* vert = vert_end - 1; vert >= vert_start; vert--)
{
float d = (vert->pos.x - gradient_p0_x) * (gradient_extent_x);
float alpha_mul = 1.0f - ImClamp(d * gradient_inv_length2, 0.0f, 1.0f);
if (alpha_mul >= 1.0f && ++full_alpha_count > 2)
return; // Early out
int a = (int)(((vert->col >> IM_COL32_A_SHIFT) & 0xFF) * alpha_mul);
vert->col = (vert->col & ~IM_COL32_A_MASK) | (a << IM_COL32_A_SHIFT);
}
}
// Distribute UV over (a, b) rectangle
void ImGui::ShadeVertsLinearUV(ImDrawVert* vert_start, ImDrawVert* vert_end, const ImVec2& a, const ImVec2& b, const ImVec2& uv_a, const ImVec2& uv_b, bool clamp)
{
const ImVec2 size = b - a;
const ImVec2 uv_size = uv_b - uv_a;
const ImVec2 scale = ImVec2(
size.x != 0.0f ? (uv_size.x / size.x) : 0.0f,
size.y != 0.0f ? (uv_size.y / size.y) : 0.0f);
if (clamp)
{
const ImVec2 min = ImMin(uv_a, uv_b);
const ImVec2 max = ImMax(uv_a, uv_b);
for (ImDrawVert* vertex = vert_start; vertex < vert_end; ++vertex)
vertex->uv = ImClamp(uv_a + ImMul(ImVec2(vertex->pos.x, vertex->pos.y) - a, scale), min, max);
}
else
{
for (ImDrawVert* vertex = vert_start; vertex < vert_end; ++vertex)
vertex->uv = uv_a + ImMul(ImVec2(vertex->pos.x, vertex->pos.y) - a, scale);
}
}
//-----------------------------------------------------------------------------
// ImFontConfig
//-----------------------------------------------------------------------------
ImFontConfig::ImFontConfig()
{
FontData = NULL;
FontDataSize = 0;
FontDataOwnedByAtlas = true;
FontNo = 0;
SizePixels = 0.0f;
OversampleH = 3;
OversampleV = 1;
PixelSnapH = false;
GlyphExtraSpacing = ImVec2(0.0f, 0.0f);
GlyphOffset = ImVec2(0.0f, 0.0f);
GlyphRanges = NULL;
MergeMode = false;
RasterizerFlags = 0x00;
RasterizerMultiply = 1.0f;
memset(Name, 0, sizeof(Name));
DstFont = NULL;
}
//-----------------------------------------------------------------------------
// ImFontAtlas
//-----------------------------------------------------------------------------
// A work of art lies ahead! (. = white layer, X = black layer, others are blank)
// The white texels on the top left are the ones we'll use everywhere in ImGui to render filled shapes.
const int FONT_ATLAS_DEFAULT_TEX_DATA_W_HALF = 90;
const int FONT_ATLAS_DEFAULT_TEX_DATA_H = 27;
const unsigned int FONT_ATLAS_DEFAULT_TEX_DATA_ID = 0x80000000;
static const char FONT_ATLAS_DEFAULT_TEX_DATA_PIXELS[FONT_ATLAS_DEFAULT_TEX_DATA_W_HALF * FONT_ATLAS_DEFAULT_TEX_DATA_H + 1] =
{
"..- -XXXXXXX- X - X -XXXXXXX - XXXXXXX"
"..- -X.....X- X.X - X.X -X.....X - X.....X"
"--- -XXX.XXX- X...X - X...X -X....X - X....X"
"X - X.X - X.....X - X.....X -X...X - X...X"
"XX - X.X -X.......X- X.......X -X..X.X - X.X..X"
"X.X - X.X -XXXX.XXXX- XXXX.XXXX -X.X X.X - X.X X.X"
"X..X - X.X - X.X - X.X -XX X.X - X.X XX"
"X...X - X.X - X.X - XX X.X XX - X.X - X.X "
"X....X - X.X - X.X - X.X X.X X.X - X.X - X.X "
"X.....X - X.X - X.X - X..X X.X X..X - X.X - X.X "
"X......X - X.X - X.X - X...XXXXXX.XXXXXX...X - X.X XX-XX X.X "
"X.......X - X.X - X.X -X.....................X- X.X X.X-X.X X.X "
"X........X - X.X - X.X - X...XXXXXX.XXXXXX...X - X.X..X-X..X.X "
"X.........X -XXX.XXX- X.X - X..X X.X X..X - X...X-X...X "
"X..........X-X.....X- X.X - X.X X.X X.X - X....X-X....X "
"X......XXXXX-XXXXXXX- X.X - XX X.X XX - X.....X-X.....X "
"X...X..X --------- X.X - X.X - XXXXXXX-XXXXXXX "
"X..X X..X - -XXXX.XXXX- XXXX.XXXX ------------------------------------"
"X.X X..X - -X.......X- X.......X - XX XX - "
"XX X..X - - X.....X - X.....X - X.X X.X - "
" X..X - X...X - X...X - X..X X..X - "
" XX - X.X - X.X - X...XXXXXXXXXXXXX...X - "
"------------ - X - X -X.....................X- "
" ----------------------------------- X...XXXXXXXXXXXXX...X - "
" - X..X X..X - "
" - X.X X.X - "
" - XX XX - "};
static const ImVec2 FONT_ATLAS_DEFAULT_TEX_CURSOR_DATA[ImGuiMouseCursor_Count_][3] =
{
// Pos ........ Size ......... Offset ......
{ImVec2(0, 3), ImVec2(12, 19), ImVec2(0, 0)}, // ImGuiMouseCursor_Arrow
{ImVec2(13, 0), ImVec2(7, 16), ImVec2(4, 8)}, // ImGuiMouseCursor_TextInput
{ImVec2(31, 0), ImVec2(23, 23), ImVec2(11, 11)}, // ImGuiMouseCursor_ResizeAll
{ImVec2(21, 0), ImVec2(9, 23), ImVec2(5, 11)}, // ImGuiMouseCursor_ResizeNS
{ImVec2(55, 18), ImVec2(23, 9), ImVec2(11, 5)}, // ImGuiMouseCursor_ResizeEW
{ImVec2(73, 0), ImVec2(17, 17), ImVec2(9, 9)}, // ImGuiMouseCursor_ResizeNESW
{ImVec2(55, 0), ImVec2(17, 17), ImVec2(9, 9)}, // ImGuiMouseCursor_ResizeNWSE
};
ImFontAtlas::ImFontAtlas()
{
Flags = 0x00;
TexID = NULL;
TexDesiredWidth = 0;
TexGlyphPadding = 1;
TexPixelsAlpha8 = NULL;
TexPixelsRGBA32 = NULL;
TexWidth = TexHeight = 0;
TexUvScale = ImVec2(0.0f, 0.0f);
TexUvWhitePixel = ImVec2(0.0f, 0.0f);
for (int n = 0; n < IM_ARRAYSIZE(CustomRectIds); n++)
CustomRectIds[n] = -1;
}
ImFontAtlas::~ImFontAtlas()
{
Clear();
}
void ImFontAtlas::ClearInputData()
{
for (int i = 0; i < ConfigData.Size; i++)
if (ConfigData[i].FontData && ConfigData[i].FontDataOwnedByAtlas)
{
ImGui::MemFree(ConfigData[i].FontData);
ConfigData[i].FontData = NULL;
}
// When clearing this we lose access to the font name and other information used to build the font.
for (int i = 0; i < Fonts.Size; i++)
if (Fonts[i]->ConfigData >= ConfigData.Data && Fonts[i]->ConfigData < ConfigData.Data + ConfigData.Size)
{
Fonts[i]->ConfigData = NULL;
Fonts[i]->ConfigDataCount = 0;
}
ConfigData.clear();
CustomRects.clear();
for (int n = 0; n < IM_ARRAYSIZE(CustomRectIds); n++)
CustomRectIds[n] = -1;
}
void ImFontAtlas::ClearTexData()
{
if (TexPixelsAlpha8)
ImGui::MemFree(TexPixelsAlpha8);
if (TexPixelsRGBA32)
ImGui::MemFree(TexPixelsRGBA32);
TexPixelsAlpha8 = NULL;
TexPixelsRGBA32 = NULL;
}
void ImFontAtlas::ClearFonts()
{
for (int i = 0; i < Fonts.Size; i++)
IM_DELETE(Fonts[i]);
Fonts.clear();
}
void ImFontAtlas::Clear()
{
ClearInputData();
ClearTexData();
ClearFonts();
}
void ImFontAtlas::GetTexDataAsAlpha8(unsigned char** out_pixels, int* out_width, int* out_height, int* out_bytes_per_pixel)
{
// Build atlas on demand
if (TexPixelsAlpha8 == NULL)
{
if (ConfigData.empty())
AddFontDefault();
Build();
}
*out_pixels = TexPixelsAlpha8;
if (out_width) *out_width = TexWidth;
if (out_height) *out_height = TexHeight;
if (out_bytes_per_pixel) *out_bytes_per_pixel = 1;
}
void ImFontAtlas::GetTexDataAsRGBA32(unsigned char** out_pixels, int* out_width, int* out_height, int* out_bytes_per_pixel)
{
// Convert to RGBA32 format on demand
// Although it is likely to be the most commonly used format, our font rendering is 1 channel / 8 bpp
if (!TexPixelsRGBA32)
{
unsigned char* pixels = NULL;
GetTexDataAsAlpha8(&pixels, NULL, NULL);
if (pixels)
{
TexPixelsRGBA32 = (unsigned int*)ImGui::MemAlloc((size_t)(TexWidth * TexHeight * 4));
const unsigned char* src = pixels;
unsigned int* dst = TexPixelsRGBA32;
for (int n = TexWidth * TexHeight; n > 0; n--)
*dst++ = IM_COL32(255, 255, 255, (unsigned int)(*src++));
}
}
*out_pixels = (unsigned char*)TexPixelsRGBA32;
if (out_width) *out_width = TexWidth;
if (out_height) *out_height = TexHeight;
if (out_bytes_per_pixel) *out_bytes_per_pixel = 4;
}
ImFont* ImFontAtlas::AddFont(const ImFontConfig* font_cfg)
{
IM_ASSERT(font_cfg->FontData != NULL && font_cfg->FontDataSize > 0);
IM_ASSERT(font_cfg->SizePixels > 0.0f);
// Create new font
if (!font_cfg->MergeMode)
Fonts.push_back(IM_NEW(ImFont));
else
IM_ASSERT(!Fonts.empty()); // When using MergeMode make sure that a font has already been added before. You can use ImGui::GetIO().Fonts->AddFontDefault() to add the default imgui font.
ConfigData.push_back(*font_cfg);
ImFontConfig& new_font_cfg = ConfigData.back();
if (!new_font_cfg.DstFont)
new_font_cfg.DstFont = Fonts.back();
if (!new_font_cfg.FontDataOwnedByAtlas)
{
new_font_cfg.FontData = ImGui::MemAlloc(new_font_cfg.FontDataSize);
new_font_cfg.FontDataOwnedByAtlas = true;
memcpy(new_font_cfg.FontData, font_cfg->FontData, (size_t)new_font_cfg.FontDataSize);
}
// Invalidate texture
ClearTexData();
return new_font_cfg.DstFont;
}
// Default font TTF is compressed with stb_compress then base85 encoded (see misc/fonts/binary_to_compressed_c.cpp for encoder)
static unsigned int stb_decompress_length(unsigned char* input);
static unsigned int stb_decompress(unsigned char* output, unsigned char* i, unsigned int length);
static const char* GetDefaultCompressedFontDataTTFBase85();
static unsigned int Decode85Byte(char c) { return c >= '\\' ? c - 36 : c - 35; }
static void Decode85(const unsigned char* src, unsigned char* dst)
{
while (*src)
{
unsigned int tmp = Decode85Byte(src[0]) + 85 * (Decode85Byte(src[1]) + 85 * (Decode85Byte(src[2]) + 85 * (Decode85Byte(src[3]) + 85 * Decode85Byte(src[4]))));
dst[0] = ((tmp >> 0) & 0xFF);
dst[1] = ((tmp >> 8) & 0xFF);
dst[2] = ((tmp >> 16) & 0xFF);
dst[3] = ((tmp >> 24) & 0xFF); // We can't assume little-endianness.
src += 5;
dst += 4;
}
}
// Load embedded ProggyClean.ttf at size 13, disable oversampling
ImFont* ImFontAtlas::AddFontDefault(const ImFontConfig* font_cfg_template)
{
ImFontConfig font_cfg = font_cfg_template ? *font_cfg_template : ImFontConfig();
if (!font_cfg_template)
{
font_cfg.OversampleH = font_cfg.OversampleV = 1;
font_cfg.PixelSnapH = true;
}
if (font_cfg.Name[0] == '\0') strcpy(font_cfg.Name, "ProggyClean.ttf, 13px");
if (font_cfg.SizePixels <= 0.0f) font_cfg.SizePixels = 13.0f;
const char* ttf_compressed_base85 = GetDefaultCompressedFontDataTTFBase85();
ImFont* font = AddFontFromMemoryCompressedBase85TTF(ttf_compressed_base85, font_cfg.SizePixels, &font_cfg, GetGlyphRangesDefault());
return font;
}
ImFont* ImFontAtlas::AddFontFromFileTTF(const char* filename, float size_pixels, const ImFontConfig* font_cfg_template, const ImWchar* glyph_ranges)
{
int data_size = 0;
void* data = ImFileLoadToMemory(filename, "rb", &data_size, 0);
if (!data)
{
IM_ASSERT(0); // Could not load file.
return NULL;
}
ImFontConfig font_cfg = font_cfg_template ? *font_cfg_template : ImFontConfig();
if (font_cfg.Name[0] == '\0')
{
// Store a short copy of filename into into the font name for convenience
const char* p;
for (p = filename + strlen(filename); p > filename && p[-1] != '/' && p[-1] != '\\'; p--)
{
}
snprintf(font_cfg.Name, IM_ARRAYSIZE(font_cfg.Name), "%s, %.0fpx", p, size_pixels);
}
return AddFontFromMemoryTTF(data, data_size, size_pixels, &font_cfg, glyph_ranges);
}
// NB: Transfer ownership of 'ttf_data' to ImFontAtlas, unless font_cfg_template->FontDataOwnedByAtlas == false. Owned TTF buffer will be deleted after Build().
ImFont* ImFontAtlas::AddFontFromMemoryTTF(void* ttf_data, int ttf_size, float size_pixels, const ImFontConfig* font_cfg_template, const ImWchar* glyph_ranges)
{
ImFontConfig font_cfg = font_cfg_template ? *font_cfg_template : ImFontConfig();
IM_ASSERT(font_cfg.FontData == NULL);
font_cfg.FontData = ttf_data;
font_cfg.FontDataSize = ttf_size;
font_cfg.SizePixels = size_pixels;
if (glyph_ranges)
font_cfg.GlyphRanges = glyph_ranges;
return AddFont(&font_cfg);
}
ImFont* ImFontAtlas::AddFontFromMemoryCompressedTTF(const void* compressed_ttf_data, int compressed_ttf_size, float size_pixels, const ImFontConfig* font_cfg_template, const ImWchar* glyph_ranges)
{
const unsigned int buf_decompressed_size = stb_decompress_length((unsigned char*)compressed_ttf_data);
unsigned char* buf_decompressed_data = (unsigned char*)ImGui::MemAlloc(buf_decompressed_size);
stb_decompress(buf_decompressed_data, (unsigned char*)compressed_ttf_data, (unsigned int)compressed_ttf_size);
ImFontConfig font_cfg = font_cfg_template ? *font_cfg_template : ImFontConfig();
IM_ASSERT(font_cfg.FontData == NULL);
font_cfg.FontDataOwnedByAtlas = true;
return AddFontFromMemoryTTF(buf_decompressed_data, (int)buf_decompressed_size, size_pixels, &font_cfg, glyph_ranges);
}
ImFont* ImFontAtlas::AddFontFromMemoryCompressedBase85TTF(const char* compressed_ttf_data_base85, float size_pixels, const ImFontConfig* font_cfg, const ImWchar* glyph_ranges)
{
int compressed_ttf_size = (((int)strlen(compressed_ttf_data_base85) + 4) / 5) * 4;
void* compressed_ttf = ImGui::MemAlloc((size_t)compressed_ttf_size);
Decode85((const unsigned char*)compressed_ttf_data_base85, (unsigned char*)compressed_ttf);
ImFont* font = AddFontFromMemoryCompressedTTF(compressed_ttf, compressed_ttf_size, size_pixels, font_cfg, glyph_ranges);
ImGui::MemFree(compressed_ttf);
return font;
}
int ImFontAtlas::AddCustomRectRegular(unsigned int id, int width, int height)
{
IM_ASSERT(id >= 0x10000);
IM_ASSERT(width > 0 && width <= 0xFFFF);
IM_ASSERT(height > 0 && height <= 0xFFFF);
CustomRect r;
r.ID = id;
r.Width = (unsigned short)width;
r.Height = (unsigned short)height;
CustomRects.push_back(r);
return CustomRects.Size - 1; // Return index
}
int ImFontAtlas::AddCustomRectFontGlyph(ImFont* font, ImWchar id, int width, int height, float advance_x, const ImVec2& offset)
{
IM_ASSERT(font != NULL);
IM_ASSERT(width > 0 && width <= 0xFFFF);
IM_ASSERT(height > 0 && height <= 0xFFFF);
CustomRect r;
r.ID = id;
r.Width = (unsigned short)width;
r.Height = (unsigned short)height;
r.GlyphAdvanceX = advance_x;
r.GlyphOffset = offset;
r.Font = font;
CustomRects.push_back(r);
return CustomRects.Size - 1; // Return index
}
void ImFontAtlas::CalcCustomRectUV(const CustomRect* rect, ImVec2* out_uv_min, ImVec2* out_uv_max)
{
IM_ASSERT(TexWidth > 0 && TexHeight > 0); // Font atlas needs to be built before we can calculate UV coordinates
IM_ASSERT(rect->IsPacked()); // Make sure the rectangle has been packed
*out_uv_min = ImVec2((float)rect->X * TexUvScale.x, (float)rect->Y * TexUvScale.y);
*out_uv_max = ImVec2((float)(rect->X + rect->Width) * TexUvScale.x, (float)(rect->Y + rect->Height) * TexUvScale.y);
}
bool ImFontAtlas::GetMouseCursorTexData(ImGuiMouseCursor cursor_type, ImVec2* out_offset, ImVec2* out_size, ImVec2 out_uv_border[2], ImVec2 out_uv_fill[2])
{
if (cursor_type <= ImGuiMouseCursor_None || cursor_type >= ImGuiMouseCursor_Count_)
return false;
if (Flags & ImFontAtlasFlags_NoMouseCursors)
return false;
ImFontAtlas::CustomRect& r = CustomRects[CustomRectIds[0]];
IM_ASSERT(r.ID == FONT_ATLAS_DEFAULT_TEX_DATA_ID);
ImVec2 pos = FONT_ATLAS_DEFAULT_TEX_CURSOR_DATA[cursor_type][0] + ImVec2((float)r.X, (float)r.Y);
ImVec2 size = FONT_ATLAS_DEFAULT_TEX_CURSOR_DATA[cursor_type][1];
*out_size = size;
*out_offset = FONT_ATLAS_DEFAULT_TEX_CURSOR_DATA[cursor_type][2];
out_uv_border[0] = (pos)*TexUvScale;
out_uv_border[1] = (pos + size) * TexUvScale;
pos.x += FONT_ATLAS_DEFAULT_TEX_DATA_W_HALF + 1;
out_uv_fill[0] = (pos)*TexUvScale;
out_uv_fill[1] = (pos + size) * TexUvScale;
return true;
}
bool ImFontAtlas::Build()
{
return ImFontAtlasBuildWithStbTruetype(this);
}
void ImFontAtlasBuildMultiplyCalcLookupTable(unsigned char out_table[256], float in_brighten_factor)
{
for (unsigned int i = 0; i < 256; i++)
{
unsigned int value = (unsigned int)(i * in_brighten_factor);
out_table[i] = value > 255 ? 255 : (value & 0xFF);
}
}
void ImFontAtlasBuildMultiplyRectAlpha8(const unsigned char table[256], unsigned char* pixels, int x, int y, int w, int h, int stride)
{
unsigned char* data = pixels + x + y * stride;
for (int j = h; j > 0; j--, data += stride)
for (int i = 0; i < w; i++)
data[i] = table[data[i]];
}
bool ImFontAtlasBuildWithStbTruetype(ImFontAtlas* atlas)
{
IM_ASSERT(atlas->ConfigData.Size > 0);
ImFontAtlasBuildRegisterDefaultCustomRects(atlas);
atlas->TexID = NULL;
atlas->TexWidth = atlas->TexHeight = 0;
atlas->TexUvScale = ImVec2(0.0f, 0.0f);
atlas->TexUvWhitePixel = ImVec2(0.0f, 0.0f);
atlas->ClearTexData();
// Count glyphs/ranges
int total_glyphs_count = 0;
int total_ranges_count = 0;
for (int input_i = 0; input_i < atlas->ConfigData.Size; input_i++)
{
ImFontConfig& cfg = atlas->ConfigData[input_i];
if (!cfg.GlyphRanges)
cfg.GlyphRanges = atlas->GetGlyphRangesDefault();
for (const ImWchar* in_range = cfg.GlyphRanges; in_range[0] && in_range[1]; in_range += 2, total_ranges_count++)
total_glyphs_count += (in_range[1] - in_range[0]) + 1;
}
// We need a width for the skyline algorithm. Using a dumb heuristic here to decide of width. User can override TexDesiredWidth and TexGlyphPadding if they wish.
// Width doesn't really matter much, but some API/GPU have texture size limitations and increasing width can decrease height.
atlas->TexWidth = (atlas->TexDesiredWidth > 0) ? atlas->TexDesiredWidth : (total_glyphs_count > 4000) ? 4096 : (total_glyphs_count > 2000) ? 2048 : (total_glyphs_count > 1000) ? 1024 : 512;
atlas->TexHeight = 0;
// Start packing
const int max_tex_height = 1024 * 32;
stbtt_pack_context spc = {};
if (!stbtt_PackBegin(&spc, NULL, atlas->TexWidth, max_tex_height, 0, atlas->TexGlyphPadding, NULL))
return false;
stbtt_PackSetOversampling(&spc, 1, 1);
// Pack our extra data rectangles first, so it will be on the upper-left corner of our texture (UV will have small values).
ImFontAtlasBuildPackCustomRects(atlas, spc.pack_info);
// Initialize font information (so we can error without any cleanup)
struct ImFontTempBuildData
{
stbtt_fontinfo FontInfo;
stbrp_rect* Rects;
int RectsCount;
stbtt_pack_range* Ranges;
int RangesCount;
};
ImFontTempBuildData* tmp_array = (ImFontTempBuildData*)ImGui::MemAlloc((size_t)atlas->ConfigData.Size * sizeof(ImFontTempBuildData));
for (int input_i = 0; input_i < atlas->ConfigData.Size; input_i++)
{
ImFontConfig& cfg = atlas->ConfigData[input_i];
ImFontTempBuildData& tmp = tmp_array[input_i];
IM_ASSERT(cfg.DstFont && (!cfg.DstFont->IsLoaded() || cfg.DstFont->ContainerAtlas == atlas));
const int font_offset = stbtt_GetFontOffsetForIndex((unsigned char*)cfg.FontData, cfg.FontNo);
IM_ASSERT(font_offset >= 0);
if (!stbtt_InitFont(&tmp.FontInfo, (unsigned char*)cfg.FontData, font_offset))
{
atlas->TexWidth = atlas->TexHeight = 0; // Reset output on failure
ImGui::MemFree(tmp_array);
return false;
}
}
// Allocate packing character data and flag packed characters buffer as non-packed (x0=y0=x1=y1=0)
int buf_packedchars_n = 0, buf_rects_n = 0, buf_ranges_n = 0;
stbtt_packedchar* buf_packedchars = (stbtt_packedchar*)ImGui::MemAlloc(total_glyphs_count * sizeof(stbtt_packedchar));
stbrp_rect* buf_rects = (stbrp_rect*)ImGui::MemAlloc(total_glyphs_count * sizeof(stbrp_rect));
stbtt_pack_range* buf_ranges = (stbtt_pack_range*)ImGui::MemAlloc(total_ranges_count * sizeof(stbtt_pack_range));
memset(buf_packedchars, 0, total_glyphs_count * sizeof(stbtt_packedchar));
memset(buf_rects, 0, total_glyphs_count * sizeof(stbrp_rect)); // Unnecessary but let's clear this for the sake of sanity.
memset(buf_ranges, 0, total_ranges_count * sizeof(stbtt_pack_range));
// First font pass: pack all glyphs (no rendering at this point, we are working with rectangles in an infinitely tall texture at this point)
for (int input_i = 0; input_i < atlas->ConfigData.Size; input_i++)
{
ImFontConfig& cfg = atlas->ConfigData[input_i];
ImFontTempBuildData& tmp = tmp_array[input_i];
// Setup ranges
int font_glyphs_count = 0;
int font_ranges_count = 0;
for (const ImWchar* in_range = cfg.GlyphRanges; in_range[0] && in_range[1]; in_range += 2, font_ranges_count++)
font_glyphs_count += (in_range[1] - in_range[0]) + 1;
tmp.Ranges = buf_ranges + buf_ranges_n;
tmp.RangesCount = font_ranges_count;
buf_ranges_n += font_ranges_count;
for (int i = 0; i < font_ranges_count; i++)
{
const ImWchar* in_range = &cfg.GlyphRanges[i * 2];
stbtt_pack_range& range = tmp.Ranges[i];
range.font_size = cfg.SizePixels;
range.first_unicode_codepoint_in_range = in_range[0];
range.num_chars = (in_range[1] - in_range[0]) + 1;
range.chardata_for_range = buf_packedchars + buf_packedchars_n;
buf_packedchars_n += range.num_chars;
}
// Pack
tmp.Rects = buf_rects + buf_rects_n;
tmp.RectsCount = font_glyphs_count;
buf_rects_n += font_glyphs_count;
stbtt_PackSetOversampling(&spc, cfg.OversampleH, cfg.OversampleV);
int n = stbtt_PackFontRangesGatherRects(&spc, &tmp.FontInfo, tmp.Ranges, tmp.RangesCount, tmp.Rects);
IM_ASSERT(n == font_glyphs_count);
stbrp_pack_rects((stbrp_context*)spc.pack_info, tmp.Rects, n);
// Extend texture height
for (int i = 0; i < n; i++)
if (tmp.Rects[i].was_packed)
atlas->TexHeight = ImMax(atlas->TexHeight, tmp.Rects[i].y + tmp.Rects[i].h);
}
IM_ASSERT(buf_rects_n == total_glyphs_count);
IM_ASSERT(buf_packedchars_n == total_glyphs_count);
IM_ASSERT(buf_ranges_n == total_ranges_count);
// Create texture
atlas->TexHeight = (atlas->Flags & ImFontAtlasFlags_NoPowerOfTwoHeight) ? (atlas->TexHeight + 1) : ImUpperPowerOfTwo(atlas->TexHeight);
atlas->TexUvScale = ImVec2(1.0f / atlas->TexWidth, 1.0f / atlas->TexHeight);
atlas->TexPixelsAlpha8 = (unsigned char*)ImGui::MemAlloc(atlas->TexWidth * atlas->TexHeight);
memset(atlas->TexPixelsAlpha8, 0, atlas->TexWidth * atlas->TexHeight);
spc.pixels = atlas->TexPixelsAlpha8;
spc.height = atlas->TexHeight;
// Second pass: render font characters
for (int input_i = 0; input_i < atlas->ConfigData.Size; input_i++)
{
ImFontConfig& cfg = atlas->ConfigData[input_i];
ImFontTempBuildData& tmp = tmp_array[input_i];
stbtt_PackSetOversampling(&spc, cfg.OversampleH, cfg.OversampleV);
stbtt_PackFontRangesRenderIntoRects(&spc, &tmp.FontInfo, tmp.Ranges, tmp.RangesCount, tmp.Rects);
if (cfg.RasterizerMultiply != 1.0f)
{
unsigned char multiply_table[256];
ImFontAtlasBuildMultiplyCalcLookupTable(multiply_table, cfg.RasterizerMultiply);
for (const stbrp_rect* r = tmp.Rects; r != tmp.Rects + tmp.RectsCount; r++)
if (r->was_packed)
ImFontAtlasBuildMultiplyRectAlpha8(multiply_table, spc.pixels, r->x, r->y, r->w, r->h, spc.stride_in_bytes);
}
tmp.Rects = NULL;
}
// End packing
stbtt_PackEnd(&spc);
ImGui::MemFree(buf_rects);
buf_rects = NULL;
// Third pass: setup ImFont and glyphs for runtime
for (int input_i = 0; input_i < atlas->ConfigData.Size; input_i++)
{
ImFontConfig& cfg = atlas->ConfigData[input_i];
ImFontTempBuildData& tmp = tmp_array[input_i];
ImFont* dst_font = cfg.DstFont; // We can have multiple input fonts writing into a same destination font (when using MergeMode=true)
const float font_scale = stbtt_ScaleForPixelHeight(&tmp.FontInfo, cfg.SizePixels);
int unscaled_ascent, unscaled_descent, unscaled_line_gap;
stbtt_GetFontVMetrics(&tmp.FontInfo, &unscaled_ascent, &unscaled_descent, &unscaled_line_gap);
const float ascent = unscaled_ascent * font_scale;
const float descent = unscaled_descent * font_scale;
ImFontAtlasBuildSetupFont(atlas, dst_font, &cfg, ascent, descent);
const float off_x = cfg.GlyphOffset.x;
const float off_y = cfg.GlyphOffset.y + (float)(int)(dst_font->Ascent + 0.5f);
for (int i = 0; i < tmp.RangesCount; i++)
{
stbtt_pack_range& range = tmp.Ranges[i];
for (int char_idx = 0; char_idx < range.num_chars; char_idx += 1)
{
const stbtt_packedchar& pc = range.chardata_for_range[char_idx];
if (!pc.x0 && !pc.x1 && !pc.y0 && !pc.y1)
continue;
const int codepoint = range.first_unicode_codepoint_in_range + char_idx;
if (cfg.MergeMode && dst_font->FindGlyph((unsigned short)codepoint))
continue;
stbtt_aligned_quad q;
float dummy_x = 0.0f, dummy_y = 0.0f;
stbtt_GetPackedQuad(range.chardata_for_range, atlas->TexWidth, atlas->TexHeight, char_idx, &dummy_x, &dummy_y, &q, 0);
dst_font->AddGlyph((ImWchar)codepoint, q.x0 + off_x, q.y0 + off_y, q.x1 + off_x, q.y1 + off_y, q.s0, q.t0, q.s1, q.t1, pc.xadvance);
}
}
}
// Cleanup temporaries
ImGui::MemFree(buf_packedchars);
ImGui::MemFree(buf_ranges);
ImGui::MemFree(tmp_array);
ImFontAtlasBuildFinish(atlas);
return true;
}
void ImFontAtlasBuildRegisterDefaultCustomRects(ImFontAtlas* atlas)
{
if (atlas->CustomRectIds[0] >= 0)
return;
if (!(atlas->Flags & ImFontAtlasFlags_NoMouseCursors))
atlas->CustomRectIds[0] = atlas->AddCustomRectRegular(FONT_ATLAS_DEFAULT_TEX_DATA_ID, FONT_ATLAS_DEFAULT_TEX_DATA_W_HALF * 2 + 1, FONT_ATLAS_DEFAULT_TEX_DATA_H);
else
atlas->CustomRectIds[0] = atlas->AddCustomRectRegular(FONT_ATLAS_DEFAULT_TEX_DATA_ID, 2, 2);
}
void ImFontAtlasBuildSetupFont(ImFontAtlas* atlas, ImFont* font, ImFontConfig* font_config, float ascent, float descent)
{
if (!font_config->MergeMode)
{
font->ClearOutputData();
font->FontSize = font_config->SizePixels;
font->ConfigData = font_config;
font->ContainerAtlas = atlas;
font->Ascent = ascent;
font->Descent = descent;
}
font->ConfigDataCount++;
}
void ImFontAtlasBuildPackCustomRects(ImFontAtlas* atlas, void* pack_context_opaque)
{
stbrp_context* pack_context = (stbrp_context*)pack_context_opaque;
ImVector<ImFontAtlas::CustomRect>& user_rects = atlas->CustomRects;
IM_ASSERT(user_rects.Size >= 1); // We expect at least the default custom rects to be registered, else something went wrong.
ImVector<stbrp_rect> pack_rects;
pack_rects.resize(user_rects.Size);
memset(pack_rects.Data, 0, sizeof(stbrp_rect) * user_rects.Size);
for (int i = 0; i < user_rects.Size; i++)
{
pack_rects[i].w = user_rects[i].Width;
pack_rects[i].h = user_rects[i].Height;
}
stbrp_pack_rects(pack_context, &pack_rects[0], pack_rects.Size);
for (int i = 0; i < pack_rects.Size; i++)
if (pack_rects[i].was_packed)
{
user_rects[i].X = pack_rects[i].x;
user_rects[i].Y = pack_rects[i].y;
IM_ASSERT(pack_rects[i].w == user_rects[i].Width && pack_rects[i].h == user_rects[i].Height);
atlas->TexHeight = ImMax(atlas->TexHeight, pack_rects[i].y + pack_rects[i].h);
}
}
static void ImFontAtlasBuildRenderDefaultTexData(ImFontAtlas* atlas)
{
IM_ASSERT(atlas->CustomRectIds[0] >= 0);
IM_ASSERT(atlas->TexPixelsAlpha8 != NULL);
ImFontAtlas::CustomRect& r = atlas->CustomRects[atlas->CustomRectIds[0]];
IM_ASSERT(r.ID == FONT_ATLAS_DEFAULT_TEX_DATA_ID);
IM_ASSERT(r.IsPacked());
const int w = atlas->TexWidth;
if (!(atlas->Flags & ImFontAtlasFlags_NoMouseCursors))
{
// Render/copy pixels
IM_ASSERT(r.Width == FONT_ATLAS_DEFAULT_TEX_DATA_W_HALF * 2 + 1 && r.Height == FONT_ATLAS_DEFAULT_TEX_DATA_H);
for (int y = 0, n = 0; y < FONT_ATLAS_DEFAULT_TEX_DATA_H; y++)
for (int x = 0; x < FONT_ATLAS_DEFAULT_TEX_DATA_W_HALF; x++, n++)
{
const int offset0 = (int)(r.X + x) + (int)(r.Y + y) * w;
const int offset1 = offset0 + FONT_ATLAS_DEFAULT_TEX_DATA_W_HALF + 1;
atlas->TexPixelsAlpha8[offset0] = FONT_ATLAS_DEFAULT_TEX_DATA_PIXELS[n] == '.' ? 0xFF : 0x00;
atlas->TexPixelsAlpha8[offset1] = FONT_ATLAS_DEFAULT_TEX_DATA_PIXELS[n] == 'X' ? 0xFF : 0x00;
}
}
else
{
IM_ASSERT(r.Width == 2 && r.Height == 2);
const int offset = (int)(r.X) + (int)(r.Y) * w;
atlas->TexPixelsAlpha8[offset] = atlas->TexPixelsAlpha8[offset + 1] = atlas->TexPixelsAlpha8[offset + w] = atlas->TexPixelsAlpha8[offset + w + 1] = 0xFF;
}
atlas->TexUvWhitePixel = ImVec2((r.X + 0.5f) * atlas->TexUvScale.x, (r.Y + 0.5f) * atlas->TexUvScale.y);
}
void ImFontAtlasBuildFinish(ImFontAtlas* atlas)
{
// Render into our custom data block
ImFontAtlasBuildRenderDefaultTexData(atlas);
// Register custom rectangle glyphs
for (int i = 0; i < atlas->CustomRects.Size; i++)
{
const ImFontAtlas::CustomRect& r = atlas->CustomRects[i];
if (r.Font == NULL || r.ID > 0x10000)
continue;
IM_ASSERT(r.Font->ContainerAtlas == atlas);
ImVec2 uv0, uv1;
atlas->CalcCustomRectUV(&r, &uv0, &uv1);
r.Font->AddGlyph((ImWchar)r.ID, r.GlyphOffset.x, r.GlyphOffset.y, r.GlyphOffset.x + r.Width, r.GlyphOffset.y + r.Height, uv0.x, uv0.y, uv1.x, uv1.y, r.GlyphAdvanceX);
}
// Build all fonts lookup tables
for (int i = 0; i < atlas->Fonts.Size; i++)
atlas->Fonts[i]->BuildLookupTable();
}
// Retrieve list of range (2 int per range, values are inclusive)
const ImWchar* ImFontAtlas::GetGlyphRangesDefault()
{
static const ImWchar ranges[] =
{
0x0020,
0x00FF, // Basic Latin + Latin Supplement
0,
};
return &ranges[0];
}
const ImWchar* ImFontAtlas::GetGlyphRangesKorean()
{
static const ImWchar ranges[] =
{
0x0020,
0x00FF, // Basic Latin + Latin Supplement
0x3131,
0x3163, // Korean alphabets
0xAC00,
0xD79D, // Korean characters
0,
};
return &ranges[0];
}
const ImWchar* ImFontAtlas::GetGlyphRangesChinese()
{
static const ImWchar ranges[] =
{
0x0020,
0x00FF, // Basic Latin + Latin Supplement
0x3000,
0x30FF, // Punctuations, Hiragana, Katakana
0x31F0,
0x31FF, // Katakana Phonetic Extensions
0xFF00,
0xFFEF, // Half-width characters
0x4e00,
0x9FAF, // CJK Ideograms
0,
};
return &ranges[0];
}
const ImWchar* ImFontAtlas::GetGlyphRangesJapanese()
{
// Store the 1946 ideograms code points as successive offsets from the initial unicode codepoint 0x4E00. Each offset has an implicit +1.
// This encoding is designed to helps us reduce the source code size.
// FIXME: Source a list of the revised 2136 joyo kanji list from 2010 and rebuild this.
// The current list was sourced from http://theinstructionlimit.com/author/renaudbedardrenaudbedard/page/3
// Note that you may use ImFontAtlas::GlyphRangesBuilder to create your own ranges, by merging existing ranges or adding new characters.
static const short offsets_from_0x4E00[] =
{
-1,
0,
1,
3,
0,
0,
0,
0,
1,
0,
5,
1,
1,
0,
7,
4,
6,
10,
0,
1,
9,
9,
7,
1,
3,
19,
1,
10,
7,
1,
0,
1,
0,
5,
1,
0,
6,
4,
2,
6,
0,
0,
12,
6,
8,
0,
3,
5,
0,
1,
0,
9,
0,
0,
8,
1,
1,
3,
4,
5,
13,
0,
0,
8,
2,
17,
4,
3,
1,
1,
9,
6,
0,
0,
0,
2,
1,
3,
2,
22,
1,
9,
11,
1,
13,
1,
3,
12,
0,
5,
9,
2,
0,
6,
12,
5,
3,
12,
4,
1,
2,
16,
1,
1,
4,
6,
5,
3,
0,
6,
13,
15,
5,
12,
8,
14,
0,
0,
6,
15,
3,
6,
0,
18,
8,
1,
6,
14,
1,
5,
4,
12,
24,
3,
13,
12,
10,
24,
0,
0,
0,
1,
0,
1,
1,
2,
9,
10,
2,
2,
0,
0,
3,
3,
1,
0,
3,
8,
0,
3,
2,
4,
4,
1,
6,
11,
10,
14,
6,
15,
3,
4,
15,
1,
0,
0,
5,
2,
2,
0,
0,
1,
6,
5,
5,
6,
0,
3,
6,
5,
0,
0,
1,
0,
11,
2,
2,
8,
4,
7,
0,
10,
0,
1,
2,
17,
19,
3,
0,
2,
5,
0,
6,
2,
4,
4,
6,
1,
1,
11,
2,
0,
3,
1,
2,
1,
2,
10,
7,
6,
3,
16,
0,
8,
24,
0,
0,
3,
1,
1,
3,
0,
1,
6,
0,
0,
0,
2,
0,
1,
5,
15,
0,
1,
0,
0,
2,
11,
19,
1,
4,
19,
7,
6,
5,
1,
0,
0,
0,
0,
5,
1,
0,
1,
9,
0,
0,
5,
0,
2,
0,
1,
0,
3,
0,
11,
3,
0,
2,
0,
0,
0,
0,
0,
9,
3,
6,
4,
12,
0,
14,
0,
0,
29,
10,
8,
0,
14,
37,
13,
0,
31,
16,
19,
0,
8,
30,
1,
20,
8,
3,
48,
21,
1,
0,
12,
0,
10,
44,
34,
42,
54,
11,
18,
82,
0,
2,
1,
2,
12,
1,
0,
6,
2,
17,
2,
12,
7,
0,
7,
17,
4,
2,
6,
24,
23,
8,
23,
39,
2,
16,
23,
1,
0,
5,
1,
2,
15,
14,
5,
6,
2,
11,
0,
8,
6,
2,
2,
2,
14,
20,
4,
15,
3,
4,
11,
10,
10,
2,
5,
2,
1,
30,
2,
1,
0,
0,
22,
5,
5,
0,
3,
1,
5,
4,
1,
0,
0,
2,
2,
21,
1,
5,
1,
2,
16,
2,
1,
3,
4,
0,
8,
4,
0,
0,
5,
14,
11,
2,
16,
1,
13,
1,
7,
0,
22,
15,
3,
1,
22,
7,
14,
22,
19,
11,
24,
18,
46,
10,
20,
64,
45,
3,
2,
0,
4,
5,
0,
1,
4,
25,
1,
0,
0,
2,
10,
0,
0,
0,
1,
0,
1,
2,
0,
0,
9,
1,
2,
0,
0,
0,
2,
5,
2,
1,
1,
5,
5,
8,
1,
1,
1,
5,
1,
4,
9,
1,
3,
0,
1,
0,
1,
1,
2,
0,
0,
2,
0,
1,
8,
22,
8,
1,
0,
0,
0,
0,
4,
2,
1,
0,
9,
8,
5,
0,
9,
1,
30,
24,
2,
6,
4,
39,
0,
14,
5,
16,
6,
26,
179,
0,
2,
1,
1,
0,
0,
0,
5,
2,
9,
6,
0,
2,
5,
16,
7,
5,
1,
1,
0,
2,
4,
4,
7,
15,
13,
14,
0,
0,
3,
0,
1,
0,
0,
0,
2,
1,
6,
4,
5,
1,
4,
9,
0,
3,
1,
8,
0,
0,
10,
5,
0,
43,
0,
2,
6,
8,
4,
0,
2,
0,
0,
9,
6,
0,
9,
3,
1,
6,
20,
14,
6,
1,
4,
0,
7,
2,
3,
0,
2,
0,
5,
0,
3,
1,
0,
3,
9,
7,
0,
3,
4,
0,
4,
9,
1,
6,
0,
9,
0,
0,
2,
3,
10,
9,
28,
3,
6,
2,
4,
1,
2,
32,
4,
1,
18,
2,
0,
3,
1,
5,
30,
10,
0,
2,
2,
2,
0,
7,
9,
8,
11,
10,
11,
7,
2,
13,
7,
5,
10,
0,
3,
40,
2,
0,
1,
6,
12,
0,
4,
5,
1,
5,
11,
11,
21,
4,
8,
3,
7,
8,
8,
33,
5,
23,
0,
0,
19,
8,
8,
2,
3,
0,
6,
1,
1,
1,
5,
1,
27,
4,
2,
5,
0,
3,
5,
6,
3,
1,
0,
3,
1,
12,
5,
3,
3,
2,
0,
7,
7,
2,
1,
0,
4,
0,
1,
1,
2,
0,
10,
10,
6,
2,
5,
9,
7,
5,
15,
15,
21,
6,
11,
5,
20,
4,
3,
5,
5,
2,
5,
0,
2,
1,
0,
1,
7,
28,
0,
9,
0,
5,
12,
5,
5,
18,
30,
0,
12,
3,
3,
21,
16,
25,
32,
9,
3,
14,
11,
24,
5,
66,
9,
1,
2,
0,
5,
9,
1,
5,
1,
8,
0,
8,
3,
3,
0,
1,
15,
1,
4,
8,
1,
2,
7,
0,
7,
2,
8,
3,
7,
5,
3,
7,
10,
2,
1,
0,
0,
2,
25,
0,
6,
4,
0,
10,
0,
4,
2,
4,
1,
12,
5,
38,
4,
0,
4,
1,
10,
5,
9,
4,
0,
14,
4,
2,
5,
18,
20,
21,
1,
3,
0,
5,
0,
7,
0,
3,
7,
1,
3,
1,
1,
8,
1,
0,
0,
0,
3,
2,
5,
2,
11,
6,
0,
13,
1,
3,
9,
1,
12,
0,
16,
6,
2,
1,
0,
2,
1,
12,
6,
13,
11,
2,
0,
28,
1,
7,
8,
14,
13,
8,
13,
0,
2,
0,
5,
4,
8,
10,
2,
37,
42,
19,
6,
6,
7,
4,
14,
11,
18,
14,
80,
7,
6,
0,
4,
72,
12,
36,
27,
7,
7,
0,
14,
17,
19,
164,
27,
0,
5,
10,
7,
3,
13,
6,
14,
0,
2,
2,
5,
3,
0,
6,
13,
0,
0,
10,
29,
0,
4,
0,
3,
13,
0,
3,
1,
6,
51,
1,
5,
28,
2,
0,
8,
0,
20,
2,
4,
0,
25,
2,
10,
13,
10,
0,
16,
4,
0,
1,
0,
2,
1,
7,
0,
1,
8,
11,
0,
0,
1,
2,
7,
2,
23,
11,
6,
6,
4,
16,
2,
2,
2,
0,
22,
9,
3,
3,
5,
2,
0,
15,
16,
21,
2,
9,
20,
15,
15,
5,
3,
9,
1,
0,
0,
1,
7,
7,
5,
4,
2,
2,
2,
38,
24,
14,
0,
0,
15,
5,
6,
24,
14,
5,
5,
11,
0,
21,
12,
0,
3,
8,
4,
11,
1,
8,
0,
11,
27,
7,
2,
4,
9,
21,
59,
0,
1,
39,
3,
60,
62,
3,
0,
12,
11,
0,
3,
30,
11,
0,
13,
88,
4,
15,
5,
28,
13,
1,
4,
48,
17,
17,
4,
28,
32,
46,
0,
16,
0,
18,
11,
1,
8,
6,
38,
11,
2,
6,
11,
38,
2,
0,
45,
3,
11,
2,
7,
8,
4,
30,
14,
17,
2,
1,
1,
65,
18,
12,
16,
4,
2,
45,
123,
12,
56,
33,
1,
4,
3,
4,
7,
0,
0,
0,
3,
2,
0,
16,
4,
2,
4,
2,
0,
7,
4,
5,
2,
26,
2,
25,
6,
11,
6,
1,
16,
2,
6,
17,
77,
15,
3,
35,
0,
1,
0,
5,
1,
0,
38,
16,
6,
3,
12,
3,
3,
3,
0,
9,
3,
1,
3,
5,
2,
9,
0,
18,
0,
25,
1,
3,
32,
1,
72,
46,
6,
2,
7,
1,
3,
14,
17,
0,
28,
1,
40,
13,
0,
20,
15,
40,
6,
38,
24,
12,
43,
1,
1,
9,
0,
12,
6,
0,
6,
2,
4,
19,
3,
7,
1,
48,
0,
9,
5,
0,
5,
6,
9,
6,
10,
15,
2,
11,
19,
3,
9,
2,
0,
1,
10,
1,
27,
8,
1,
3,
6,
1,
14,
0,
26,
0,
27,
16,
3,
4,
9,
6,
2,
23,
9,
10,
5,
25,
2,
1,
6,
1,
1,
48,
15,
9,
15,
14,
3,
4,
26,
60,
29,
13,
37,
21,
1,
6,
4,
0,
2,
11,
22,
23,
16,
16,
2,
2,
1,
3,
0,
5,
1,
6,
4,
0,
0,
4,
0,
0,
8,
3,
0,
2,
5,
0,
7,
1,
7,
3,
13,
2,
4,
10,
3,
0,
2,
31,
0,
18,
3,
0,
12,
10,
4,
1,
0,
7,
5,
7,
0,
5,
4,
12,
2,
22,
10,
4,
2,
15,
2,
8,
9,
0,
23,
2,
197,
51,
3,
1,
1,
4,
13,
4,
3,
21,
4,
19,
3,
10,
5,
40,
0,
4,
1,
1,
10,
4,
1,
27,
34,
7,
21,
2,
17,
2,
9,
6,
4,
2,
3,
0,
4,
2,
7,
8,
2,
5,
1,
15,
21,
3,
4,
4,
2,
2,
17,
22,
1,
5,
22,
4,
26,
7,
0,
32,
1,
11,
42,
15,
4,
1,
2,
5,
0,
19,
3,
1,
8,
6,
0,
10,
1,
9,
2,
13,
30,
8,
2,
24,
17,
19,
1,
4,
4,
25,
13,
0,
10,
16,
11,
39,
18,
8,
5,
30,
82,
1,
6,
8,
18,
77,
11,
13,
20,
75,
11,
112,
78,
33,
3,
0,
0,
60,
17,
84,
9,
1,
1,
12,
30,
10,
49,
5,
32,
158,
178,
5,
5,
6,
3,
3,
1,
3,
1,
4,
7,
6,
19,
31,
21,
0,
2,
9,
5,
6,
27,
4,
9,
8,
1,
76,
18,
12,
1,
4,
0,
3,
3,
6,
3,
12,
2,
8,
30,
16,
2,
25,
1,
5,
5,
4,
3,
0,
6,
10,
2,
3,
1,
0,
5,
1,
19,
3,
0,
8,
1,
5,
2,
6,
0,
0,
0,
19,
1,
2,
0,
5,
1,
2,
5,
1,
3,
7,
0,
4,
12,
7,
3,
10,
22,
0,
9,
5,
1,
0,
2,
20,
1,
1,
3,
23,
30,
3,
9,
9,
1,
4,
191,
14,
3,
15,
6,
8,
50,
0,
1,
0,
0,
4,
0,
0,
1,
0,
2,
4,
2,
0,
2,
3,
0,
2,
0,
2,
2,
8,
7,
0,
1,
1,
1,
3,
3,
17,
11,
91,
1,
9,
3,
2,
13,
4,
24,
15,
41,
3,
13,
3,
1,
20,
4,
125,
29,
30,
1,
0,
4,
12,
2,
21,
4,
5,
5,
19,
11,
0,
13,
11,
86,
2,
18,
0,
7,
1,
8,
8,
2,
2,
22,
1,
2,
6,
5,
2,
0,
1,
2,
8,
0,
2,
0,
5,
2,
1,
0,
2,
10,
2,
0,
5,
9,
2,
1,
2,
0,
1,
0,
4,
0,
0,
10,
2,
5,
3,
0,
6,
1,
0,
1,
4,
4,
33,
3,
13,
17,
3,
18,
6,
4,
7,
1,
5,
78,
0,
4,
1,
13,
7,
1,
8,
1,
0,
35,
27,
15,
3,
0,
0,
0,
1,
11,
5,
41,
38,
15,
22,
6,
14,
14,
2,
1,
11,
6,
20,
63,
5,
8,
27,
7,
11,
2,
2,
40,
58,
23,
50,
54,
56,
293,
8,
8,
1,
5,
1,
14,
0,
1,
12,
37,
89,
8,
8,
8,
2,
10,
6,
0,
0,
0,
4,
5,
2,
1,
0,
1,
1,
2,
7,
0,
3,
3,
0,
4,
6,
0,
3,
2,
19,
3,
8,
0,
0,
0,
4,
4,
16,
0,
4,
1,
5,
1,
3,
0,
3,
4,
6,
2,
17,
10,
10,
31,
6,
4,
3,
6,
10,
126,
7,
3,
2,
2,
0,
9,
0,
0,
5,
20,
13,
0,
15,
0,
6,
0,
2,
5,
8,
64,
50,
3,
2,
12,
2,
9,
0,
0,
11,
8,
20,
109,
2,
18,
23,
0,
0,
9,
61,
3,
0,
28,
41,
77,
27,
19,
17,
81,
5,
2,
14,
5,
83,
57,
252,
14,
154,
263,
14,
20,
8,
13,
6,
57,
39,
38,
};
static ImWchar base_ranges[] =
{
0x0020, 0x00FF, // Basic Latin + Latin Supplement
0x3000, 0x30FF, // Punctuations, Hiragana, Katakana
0x31F0, 0x31FF, // Katakana Phonetic Extensions
0xFF00, 0xFFEF, // Half-width characters
};
static bool full_ranges_unpacked = false;
static ImWchar full_ranges[IM_ARRAYSIZE(base_ranges) + IM_ARRAYSIZE(offsets_from_0x4E00) * 2 + 1];
if (!full_ranges_unpacked)
{
// Unpack
int codepoint = 0x4e00;
memcpy(full_ranges, base_ranges, sizeof(base_ranges));
ImWchar* dst = full_ranges + IM_ARRAYSIZE(base_ranges);
;
for (int n = 0; n < IM_ARRAYSIZE(offsets_from_0x4E00); n++, dst += 2)
dst[0] = dst[1] = (ImWchar)(codepoint += (offsets_from_0x4E00[n] + 1));
dst[0] = 0;
full_ranges_unpacked = true;
}
return &full_ranges[0];
}
const ImWchar* ImFontAtlas::GetGlyphRangesCyrillic()
{
static const ImWchar ranges[] =
{
0x0020,
0x00FF, // Basic Latin + Latin Supplement
0x0400,
0x052F, // Cyrillic + Cyrillic Supplement
0x2DE0,
0x2DFF, // Cyrillic Extended-A
0xA640,
0xA69F, // Cyrillic Extended-B
0,
};
return &ranges[0];
}
const ImWchar* ImFontAtlas::GetGlyphRangesThai()
{
static const ImWchar ranges[] =
{
0x0020,
0x00FF, // Basic Latin
0x2010,
0x205E, // Punctuations
0x0E00,
0x0E7F, // Thai
0,
};
return &ranges[0];
}
//-----------------------------------------------------------------------------
// ImFontAtlas::GlyphRangesBuilder
//-----------------------------------------------------------------------------
void ImFontAtlas::GlyphRangesBuilder::AddText(const char* text, const char* text_end)
{
while (text_end ? (text < text_end) : *text)
{
unsigned int c = 0;
int c_len = ImTextCharFromUtf8(&c, text, text_end);
text += c_len;
if (c_len == 0)
break;
if (c < 0x10000)
AddChar((ImWchar)c);
}
}
void ImFontAtlas::GlyphRangesBuilder::AddRanges(const ImWchar* ranges)
{
for (; ranges[0]; ranges += 2)
for (ImWchar c = ranges[0]; c <= ranges[1]; c++)
AddChar(c);
}
void ImFontAtlas::GlyphRangesBuilder::BuildRanges(ImVector<ImWchar>* out_ranges)
{
for (int n = 0; n < 0x10000; n++)
if (GetBit(n))
{
out_ranges->push_back((ImWchar)n);
while (n < 0x10000 && GetBit(n + 1))
n++;
out_ranges->push_back((ImWchar)n);
}
out_ranges->push_back(0);
}
//-----------------------------------------------------------------------------
// ImFont
//-----------------------------------------------------------------------------
ImFont::ImFont()
{
Scale = 1.0f;
FallbackChar = (ImWchar)'?';
DisplayOffset = ImVec2(0.0f, 1.0f);
ClearOutputData();
}
ImFont::~ImFont()
{
// Invalidate active font so that the user gets a clear crash instead of a dangling pointer.
// If you want to delete fonts you need to do it between Render() and NewFrame().
// FIXME-CLEANUP
/*
ImGuiContext& g = *GImGui;
if (g.Font == this)
g.Font = NULL;
*/
ClearOutputData();
}
void ImFont::ClearOutputData()
{
FontSize = 0.0f;
Glyphs.clear();
IndexAdvanceX.clear();
IndexLookup.clear();
FallbackGlyph = NULL;
FallbackAdvanceX = 0.0f;
ConfigDataCount = 0;
ConfigData = NULL;
ContainerAtlas = NULL;
Ascent = Descent = 0.0f;
MetricsTotalSurface = 0;
}
void ImFont::BuildLookupTable()
{
int max_codepoint = 0;
for (int i = 0; i != Glyphs.Size; i++)
max_codepoint = ImMax(max_codepoint, (int)Glyphs[i].Codepoint);
IM_ASSERT(Glyphs.Size < 0xFFFF); // -1 is reserved
IndexAdvanceX.clear();
IndexLookup.clear();
GrowIndex(max_codepoint + 1);
for (int i = 0; i < Glyphs.Size; i++)
{
int codepoint = (int)Glyphs[i].Codepoint;
IndexAdvanceX[codepoint] = Glyphs[i].AdvanceX;
IndexLookup[codepoint] = (unsigned short)i;
}
// Create a glyph to handle TAB
// FIXME: Needs proper TAB handling but it needs to be contextualized (or we could arbitrary say that each string starts at "column 0" ?)
if (FindGlyph((unsigned short)' '))
{
if (Glyphs.back().Codepoint != '\t') // So we can call this function multiple times
Glyphs.resize(Glyphs.Size + 1);
ImFontGlyph& tab_glyph = Glyphs.back();
tab_glyph = *FindGlyph((unsigned short)' ');
tab_glyph.Codepoint = '\t';
tab_glyph.AdvanceX *= 4;
IndexAdvanceX[(int)tab_glyph.Codepoint] = (float)tab_glyph.AdvanceX;
IndexLookup[(int)tab_glyph.Codepoint] = (unsigned short)(Glyphs.Size - 1);
}
FallbackGlyph = NULL;
FallbackGlyph = FindGlyph(FallbackChar);
FallbackAdvanceX = FallbackGlyph ? FallbackGlyph->AdvanceX : 0.0f;
for (int i = 0; i < max_codepoint + 1; i++)
if (IndexAdvanceX[i] < 0.0f)
IndexAdvanceX[i] = FallbackAdvanceX;
}
void ImFont::SetFallbackChar(ImWchar c)
{
FallbackChar = c;
BuildLookupTable();
}
void ImFont::GrowIndex(int new_size)
{
IM_ASSERT(IndexAdvanceX.Size == IndexLookup.Size);
if (new_size <= IndexLookup.Size)
return;
IndexAdvanceX.resize(new_size, -1.0f);
IndexLookup.resize(new_size, (unsigned short)-1);
}
void ImFont::AddGlyph(ImWchar codepoint, float x0, float y0, float x1, float y1, float u0, float v0, float u1, float v1, float advance_x)
{
Glyphs.resize(Glyphs.Size + 1);
ImFontGlyph& glyph = Glyphs.back();
glyph.Codepoint = (ImWchar)codepoint;
glyph.X0 = x0;
glyph.Y0 = y0;
glyph.X1 = x1;
glyph.Y1 = y1;
glyph.U0 = u0;
glyph.V0 = v0;
glyph.U1 = u1;
glyph.V1 = v1;
glyph.AdvanceX = advance_x + ConfigData->GlyphExtraSpacing.x; // Bake spacing into AdvanceX
if (ConfigData->PixelSnapH)
glyph.AdvanceX = (float)(int)(glyph.AdvanceX + 0.5f);
// Compute rough surface usage metrics (+1 to account for average padding, +0.99 to round)
MetricsTotalSurface += (int)((glyph.U1 - glyph.U0) * ContainerAtlas->TexWidth + 1.99f) * (int)((glyph.V1 - glyph.V0) * ContainerAtlas->TexHeight + 1.99f);
}
void ImFont::AddRemapChar(ImWchar dst, ImWchar src, bool overwrite_dst)
{
IM_ASSERT(IndexLookup.Size > 0); // Currently this can only be called AFTER the font has been built, aka after calling ImFontAtlas::GetTexDataAs*() function.
int index_size = IndexLookup.Size;
if (dst < index_size && IndexLookup.Data[dst] == (unsigned short)-1 && !overwrite_dst) // 'dst' already exists
return;
if (src >= index_size && dst >= index_size) // both 'dst' and 'src' don't exist -> no-op
return;
GrowIndex(dst + 1);
IndexLookup[dst] = (src < index_size) ? IndexLookup.Data[src] : (unsigned short)-1;
IndexAdvanceX[dst] = (src < index_size) ? IndexAdvanceX.Data[src] : 1.0f;
}
const ImFontGlyph* ImFont::FindGlyph(ImWchar c) const
{
if (c < IndexLookup.Size)
{
const unsigned short i = IndexLookup[c];
if (i != (unsigned short)-1)
return &Glyphs.Data[i];
}
return FallbackGlyph;
}
const char* ImFont::CalcWordWrapPositionA(float scale, const char* text, const char* text_end, float wrap_width) const
{
// Simple word-wrapping for English, not full-featured. Please submit failing cases!
// FIXME: Much possible improvements (don't cut things like "word !", "word!!!" but cut within "word,,,,", more sensible support for punctuations, support for Unicode punctuations, etc.)
// For references, possible wrap point marked with ^
// "aaa bbb, ccc,ddd. eee fff. ggg!"
// ^ ^ ^ ^ ^__ ^ ^
// List of hardcoded separators: .,;!?'"
// Skip extra blanks after a line returns (that includes not counting them in width computation)
// e.g. "Hello world" --> "Hello" "World"
// Cut words that cannot possibly fit within one line.
// e.g.: "The tropical fish" with ~5 characters worth of width --> "The tr" "opical" "fish"
float line_width = 0.0f;
float word_width = 0.0f;
float blank_width = 0.0f;
wrap_width /= scale; // We work with unscaled widths to avoid scaling every characters
const char* word_end = text;
const char* prev_word_end = NULL;
bool inside_word = true;
const char* s = text;
while (s < text_end)
{
unsigned int c = (unsigned int)*s;
const char* next_s;
if (c < 0x80)
next_s = s + 1;
else
next_s = s + ImTextCharFromUtf8(&c, s, text_end);
if (c == 0)
break;
if (c < 32)
{
if (c == '\n')
{
line_width = word_width = blank_width = 0.0f;
inside_word = true;
s = next_s;
continue;
}
if (c == '\r')
{
s = next_s;
continue;
}
}
const float char_width = ((int)c < IndexAdvanceX.Size ? IndexAdvanceX[(int)c] : FallbackAdvanceX);
if (ImCharIsSpace(c))
{
if (inside_word)
{
line_width += blank_width;
blank_width = 0.0f;
word_end = s;
}
blank_width += char_width;
inside_word = false;
}
else
{
word_width += char_width;
if (inside_word)
{
word_end = next_s;
}
else
{
prev_word_end = word_end;
line_width += word_width + blank_width;
word_width = blank_width = 0.0f;
}
// Allow wrapping after punctuation.
inside_word = !(c == '.' || c == ',' || c == ';' || c == '!' || c == '?' || c == '\"');
}
// We ignore blank width at the end of the line (they can be skipped)
if (line_width + word_width >= wrap_width)
{
// Words that cannot possibly fit within an entire line will be cut anywhere.
if (word_width < wrap_width)
s = prev_word_end ? prev_word_end : word_end;
break;
}
s = next_s;
}
return s;
}
ImVec2 ImFont::CalcTextSizeA(float size, float max_width, float wrap_width, const char* text_begin, const char* text_end, const char** remaining) const
{
if (!text_end)
text_end = text_begin + strlen(text_begin); // FIXME-OPT: Need to avoid this.
const float line_height = size;
const float scale = size / FontSize;
ImVec2 text_size = ImVec2(0, 0);
float line_width = 0.0f;
const bool word_wrap_enabled = (wrap_width > 0.0f);
const char* word_wrap_eol = NULL;
const char* s = text_begin;
while (s < text_end)
{
if (word_wrap_enabled)
{
// Calculate how far we can render. Requires two passes on the string data but keeps the code simple and not intrusive for what's essentially an uncommon feature.
if (!word_wrap_eol)
{
word_wrap_eol = CalcWordWrapPositionA(scale, s, text_end, wrap_width - line_width);
if (word_wrap_eol == s) // Wrap_width is too small to fit anything. Force displaying 1 character to minimize the height discontinuity.
word_wrap_eol++; // +1 may not be a character start point in UTF-8 but it's ok because we use s >= word_wrap_eol below
}
if (s >= word_wrap_eol)
{
if (text_size.x < line_width)
text_size.x = line_width;
text_size.y += line_height;
line_width = 0.0f;
word_wrap_eol = NULL;
// Wrapping skips upcoming blanks
while (s < text_end)
{
const char c = *s;
if (ImCharIsSpace(c))
{
s++;
}
else if (c == '\n')
{
s++;
break;
}
else
{
break;
}
}
continue;
}
}
// Decode and advance source
const char* prev_s = s;
unsigned int c = (unsigned int)*s;
if (c < 0x80)
{
s += 1;
}
else
{
s += ImTextCharFromUtf8(&c, s, text_end);
if (c == 0) // Malformed UTF-8?
break;
}
if (c < 32)
{
if (c == '\n')
{
text_size.x = ImMax(text_size.x, line_width);
text_size.y += line_height;
line_width = 0.0f;
continue;
}
if (c == '\r')
continue;
}
const float char_width = ((int)c < IndexAdvanceX.Size ? IndexAdvanceX[(int)c] : FallbackAdvanceX) * scale;
if (line_width + char_width >= max_width)
{
s = prev_s;
break;
}
line_width += char_width;
}
if (text_size.x < line_width)
text_size.x = line_width;
if (line_width > 0 || text_size.y == 0.0f)
text_size.y += line_height;
if (remaining)
*remaining = s;
return text_size;
}
void ImFont::RenderChar(ImDrawList* draw_list, float size, ImVec2 pos, ImU32 col, unsigned short c) const
{
if (c == ' ' || c == '\t' || c == '\n' || c == '\r') // Match behavior of RenderText(), those 4 codepoints are hard-coded.
return;
if (const ImFontGlyph* glyph = FindGlyph(c))
{
float scale = (size >= 0.0f) ? (size / FontSize) : 1.0f;
pos.x = (float)(int)pos.x + DisplayOffset.x;
pos.y = (float)(int)pos.y + DisplayOffset.y;
draw_list->PrimReserve(6, 4);
draw_list->PrimRectUV(ImVec2(pos.x + glyph->X0 * scale, pos.y + glyph->Y0 * scale), ImVec2(pos.x + glyph->X1 * scale, pos.y + glyph->Y1 * scale), ImVec2(glyph->U0, glyph->V0), ImVec2(glyph->U1, glyph->V1), col);
}
}
void ImFont::RenderText(ImDrawList* draw_list, float size, ImVec2 pos, ImU32 col, const ImVec4& clip_rect, const char* text_begin, const char* text_end, float wrap_width, bool cpu_fine_clip) const
{
if (!text_end)
text_end = text_begin + strlen(text_begin); // ImGui functions generally already provides a valid text_end, so this is merely to handle direct calls.
// Align to be pixel perfect
pos.x = (float)(int)pos.x + DisplayOffset.x;
pos.y = (float)(int)pos.y + DisplayOffset.y;
float x = pos.x;
float y = pos.y;
if (y > clip_rect.w)
return;
const float scale = size / FontSize;
const float line_height = FontSize * scale;
const bool word_wrap_enabled = (wrap_width > 0.0f);
const char* word_wrap_eol = NULL;
// Skip non-visible lines
const char* s = text_begin;
if (!word_wrap_enabled && y + line_height < clip_rect.y)
while (s < text_end && *s != '\n') // Fast-forward to next line
s++;
// Reserve vertices for remaining worse case (over-reserving is useful and easily amortized)
const int vtx_count_max = (int)(text_end - s) * 4;
const int idx_count_max = (int)(text_end - s) * 6;
const int idx_expected_size = draw_list->IdxBuffer.Size + idx_count_max;
draw_list->PrimReserve(idx_count_max, vtx_count_max);
ImDrawVert* vtx_write = draw_list->_VtxWritePtr;
ImDrawIdx* idx_write = draw_list->_IdxWritePtr;
unsigned int vtx_current_idx = draw_list->_VtxCurrentIdx;
while (s < text_end)
{
if (word_wrap_enabled)
{
// Calculate how far we can render. Requires two passes on the string data but keeps the code simple and not intrusive for what's essentially an uncommon feature.
if (!word_wrap_eol)
{
word_wrap_eol = CalcWordWrapPositionA(scale, s, text_end, wrap_width - (x - pos.x));
if (word_wrap_eol == s) // Wrap_width is too small to fit anything. Force displaying 1 character to minimize the height discontinuity.
word_wrap_eol++; // +1 may not be a character start point in UTF-8 but it's ok because we use s >= word_wrap_eol below
}
if (s >= word_wrap_eol)
{
x = pos.x;
y += line_height;
word_wrap_eol = NULL;
// Wrapping skips upcoming blanks
while (s < text_end)
{
const char c = *s;
if (ImCharIsSpace(c))
{
s++;
}
else if (c == '\n')
{
s++;
break;
}
else
{
break;
}
}
continue;
}
}
// Decode and advance source
unsigned int c = (unsigned int)*s;
if (c < 0x80)
{
s += 1;
}
else
{
s += ImTextCharFromUtf8(&c, s, text_end);
if (c == 0) // Malformed UTF-8?
break;
}
if (c < 32)
{
if (c == '\n')
{
x = pos.x;
y += line_height;
if (y > clip_rect.w)
break;
if (!word_wrap_enabled && y + line_height < clip_rect.y)
while (s < text_end && *s != '\n') // Fast-forward to next line
s++;
continue;
}
if (c == '\r')
continue;
}
float char_width = 0.0f;
if (const ImFontGlyph* glyph = FindGlyph((unsigned short)c))
{
char_width = glyph->AdvanceX * scale;
// Arbitrarily assume that both space and tabs are empty glyphs as an optimization
if (c != ' ' && c != '\t')
{
// We don't do a second finer clipping test on the Y axis as we've already skipped anything before clip_rect.y and exit once we pass clip_rect.w
float x1 = x + glyph->X0 * scale;
float x2 = x + glyph->X1 * scale;
float y1 = y + glyph->Y0 * scale;
float y2 = y + glyph->Y1 * scale;
if (x1 <= clip_rect.z && x2 >= clip_rect.x)
{
// Render a character
float u1 = glyph->U0;
float v1 = glyph->V0;
float u2 = glyph->U1;
float v2 = glyph->V1;
// CPU side clipping used to fit text in their frame when the frame is too small. Only does clipping for axis aligned quads.
if (cpu_fine_clip)
{
if (x1 < clip_rect.x)
{
u1 = u1 + (1.0f - (x2 - clip_rect.x) / (x2 - x1)) * (u2 - u1);
x1 = clip_rect.x;
}
if (y1 < clip_rect.y)
{
v1 = v1 + (1.0f - (y2 - clip_rect.y) / (y2 - y1)) * (v2 - v1);
y1 = clip_rect.y;
}
if (x2 > clip_rect.z)
{
u2 = u1 + ((clip_rect.z - x1) / (x2 - x1)) * (u2 - u1);
x2 = clip_rect.z;
}
if (y2 > clip_rect.w)
{
v2 = v1 + ((clip_rect.w - y1) / (y2 - y1)) * (v2 - v1);
y2 = clip_rect.w;
}
if (y1 >= y2)
{
x += char_width;
continue;
}
}
// We are NOT calling PrimRectUV() here because non-inlined causes too much overhead in a debug builds. Inlined here:
{
idx_write[0] = (ImDrawIdx)(vtx_current_idx);
idx_write[1] = (ImDrawIdx)(vtx_current_idx + 1);
idx_write[2] = (ImDrawIdx)(vtx_current_idx + 2);
idx_write[3] = (ImDrawIdx)(vtx_current_idx);
idx_write[4] = (ImDrawIdx)(vtx_current_idx + 2);
idx_write[5] = (ImDrawIdx)(vtx_current_idx + 3);
vtx_write[0].pos.x = x1;
vtx_write[0].pos.y = y1;
vtx_write[0].col = col;
vtx_write[0].uv.x = u1;
vtx_write[0].uv.y = v1;
vtx_write[1].pos.x = x2;
vtx_write[1].pos.y = y1;
vtx_write[1].col = col;
vtx_write[1].uv.x = u2;
vtx_write[1].uv.y = v1;
vtx_write[2].pos.x = x2;
vtx_write[2].pos.y = y2;
vtx_write[2].col = col;
vtx_write[2].uv.x = u2;
vtx_write[2].uv.y = v2;
vtx_write[3].pos.x = x1;
vtx_write[3].pos.y = y2;
vtx_write[3].col = col;
vtx_write[3].uv.x = u1;
vtx_write[3].uv.y = v2;
vtx_write += 4;
vtx_current_idx += 4;
idx_write += 6;
}
}
}
}
x += char_width;
}
// Give back unused vertices
draw_list->VtxBuffer.resize((int)(vtx_write - draw_list->VtxBuffer.Data));
draw_list->IdxBuffer.resize((int)(idx_write - draw_list->IdxBuffer.Data));
draw_list->CmdBuffer[draw_list->CmdBuffer.Size - 1].ElemCount -= (idx_expected_size - draw_list->IdxBuffer.Size);
draw_list->_VtxWritePtr = vtx_write;
draw_list->_IdxWritePtr = idx_write;
draw_list->_VtxCurrentIdx = (unsigned int)draw_list->VtxBuffer.Size;
}
//-----------------------------------------------------------------------------
// Internals Drawing Helpers
//-----------------------------------------------------------------------------
static inline float ImAcos01(float x)
{
if (x <= 0.0f) return IM_PI * 0.5f;
if (x >= 1.0f) return 0.0f;
return acosf(x);
//return (-0.69813170079773212f * x * x - 0.87266462599716477f) * x + 1.5707963267948966f; // Cheap approximation, may be enough for what we do.
}
// FIXME: Cleanup and move code to ImDrawList.
void ImGui::RenderRectFilledRangeH(ImDrawList* draw_list, const ImRect& rect, ImU32 col, float x_start_norm, float x_end_norm, float rounding)
{
if (x_end_norm == x_start_norm)
return;
if (x_start_norm > x_end_norm)
ImSwap(x_start_norm, x_end_norm);
ImVec2 p0 = ImVec2(ImLerp(rect.Min.x, rect.Max.x, x_start_norm), rect.Min.y);
ImVec2 p1 = ImVec2(ImLerp(rect.Min.x, rect.Max.x, x_end_norm), rect.Max.y);
if (rounding == 0.0f)
{
draw_list->AddRectFilled(p0, p1, col, 0.0f);
return;
}
rounding = ImClamp(ImMin((rect.Max.x - rect.Min.x) * 0.5f, (rect.Max.y - rect.Min.y) * 0.5f) - 1.0f, 0.0f, rounding);
const float inv_rounding = 1.0f / rounding;
const float arc0_b = ImAcos01(1.0f - (p0.x - rect.Min.x) * inv_rounding);
const float arc0_e = ImAcos01(1.0f - (p1.x - rect.Min.x) * inv_rounding);
const float x0 = ImMax(p0.x, rect.Min.x + rounding);
if (arc0_b == arc0_e)
{
draw_list->PathLineTo(ImVec2(x0, p1.y));
draw_list->PathLineTo(ImVec2(x0, p0.y));
}
else if (arc0_b == 0.0f && arc0_e == IM_PI * 0.5f)
{
draw_list->PathArcToFast(ImVec2(x0, p1.y - rounding), rounding, 3, 6); // BL
draw_list->PathArcToFast(ImVec2(x0, p0.y + rounding), rounding, 6, 9); // TR
}
else
{
draw_list->PathArcTo(ImVec2(x0, p1.y - rounding), rounding, IM_PI - arc0_e, IM_PI - arc0_b, 3); // BL
draw_list->PathArcTo(ImVec2(x0, p0.y + rounding), rounding, IM_PI + arc0_b, IM_PI + arc0_e, 3); // TR
}
if (p1.x > rect.Min.x + rounding)
{
const float arc1_b = ImAcos01(1.0f - (rect.Max.x - p1.x) * inv_rounding);
const float arc1_e = ImAcos01(1.0f - (rect.Max.x - p0.x) * inv_rounding);
const float x1 = ImMin(p1.x, rect.Max.x - rounding);
if (arc1_b == arc1_e)
{
draw_list->PathLineTo(ImVec2(x1, p0.y));
draw_list->PathLineTo(ImVec2(x1, p1.y));
}
else if (arc1_b == 0.0f && arc1_e == IM_PI * 0.5f)
{
draw_list->PathArcToFast(ImVec2(x1, p0.y + rounding), rounding, 9, 12); // TR
draw_list->PathArcToFast(ImVec2(x1, p1.y - rounding), rounding, 0, 3); // BR
}
else
{
draw_list->PathArcTo(ImVec2(x1, p0.y + rounding), rounding, -arc1_e, -arc1_b, 3); // TR
draw_list->PathArcTo(ImVec2(x1, p1.y - rounding), rounding, +arc1_b, +arc1_e, 3); // BR
}
}
draw_list->PathFillConvex(col);
}
//-----------------------------------------------------------------------------
// DEFAULT FONT DATA
//-----------------------------------------------------------------------------
// Compressed with stb_compress() then converted to a C array.
// Use the program in misc/fonts/binary_to_compressed_c.cpp to create the array from a TTF file.
// Decompression from stb.h (public domain) by Sean Barrett https://github.com/nothings/stb/blob/master/stb.h
//-----------------------------------------------------------------------------
static unsigned int stb_decompress_length(unsigned char* input)
{
return (input[8] << 24) + (input[9] << 16) + (input[10] << 8) + input[11];
}
static unsigned char *stb__barrier, *stb__barrier2, *stb__barrier3, *stb__barrier4;
static unsigned char* stb__dout;
static void stb__match(unsigned char* data, unsigned int length)
{
// INVERSE of memmove... write each byte before copying the next...
IM_ASSERT(stb__dout + length <= stb__barrier);
if (stb__dout + length > stb__barrier)
{
stb__dout += length;
return;
}
if (data < stb__barrier4)
{
stb__dout = stb__barrier + 1;
return;
}
while (length--) *stb__dout++ = *data++;
}
static void stb__lit(unsigned char* data, unsigned int length)
{
IM_ASSERT(stb__dout + length <= stb__barrier);
if (stb__dout + length > stb__barrier)
{
stb__dout += length;
return;
}
if (data < stb__barrier2)
{
stb__dout = stb__barrier + 1;
return;
}
memcpy(stb__dout, data, length);
stb__dout += length;
}
#define stb__in2(x) ((i[x] << 8) + i[(x) + 1])
#define stb__in3(x) ((i[x] << 16) + stb__in2((x) + 1))
#define stb__in4(x) ((i[x] << 24) + stb__in3((x) + 1))
static unsigned char* stb_decompress_token(unsigned char* i)
{
if (*i >= 0x20)
{ // use fewer if's for cases that expand small
if (*i >= 0x80)
stb__match(stb__dout - i[1] - 1, i[0] - 0x80 + 1), i += 2;
else if (*i >= 0x40)
stb__match(stb__dout - (stb__in2(0) - 0x4000 + 1), i[2] + 1), i += 3;
else /* *i >= 0x20 */
stb__lit(i + 1, i[0] - 0x20 + 1), i += 1 + (i[0] - 0x20 + 1);
}
else
{ // more ifs for cases that expand large, since overhead is amortized
if (*i >= 0x18)
stb__match(stb__dout - (stb__in3(0) - 0x180000 + 1), i[3] + 1), i += 4;
else if (*i >= 0x10)
stb__match(stb__dout - (stb__in3(0) - 0x100000 + 1), stb__in2(3) + 1), i += 5;
else if (*i >= 0x08)
stb__lit(i + 2, stb__in2(0) - 0x0800 + 1), i += 2 + (stb__in2(0) - 0x0800 + 1);
else if (*i == 0x07)
stb__lit(i + 3, stb__in2(1) + 1), i += 3 + (stb__in2(1) + 1);
else if (*i == 0x06)
stb__match(stb__dout - (stb__in3(1) + 1), i[4] + 1), i += 5;
else if (*i == 0x04)
stb__match(stb__dout - (stb__in3(1) + 1), stb__in2(4) + 1), i += 6;
}
return i;
}
static unsigned int stb_adler32(unsigned int adler32, unsigned char* buffer, unsigned int buflen)
{
const unsigned long ADLER_MOD = 65521;
unsigned long s1 = adler32 & 0xffff, s2 = adler32 >> 16;
unsigned long blocklen, i;
blocklen = buflen % 5552;
while (buflen)
{
for (i = 0; i + 7 < blocklen; i += 8)
{
s1 += buffer[0], s2 += s1;
s1 += buffer[1], s2 += s1;
s1 += buffer[2], s2 += s1;
s1 += buffer[3], s2 += s1;
s1 += buffer[4], s2 += s1;
s1 += buffer[5], s2 += s1;
s1 += buffer[6], s2 += s1;
s1 += buffer[7], s2 += s1;
buffer += 8;
}
for (; i < blocklen; ++i)
s1 += *buffer++, s2 += s1;
s1 %= ADLER_MOD, s2 %= ADLER_MOD;
buflen -= blocklen;
blocklen = 5552;
}
return (unsigned int)(s2 << 16) + (unsigned int)s1;
}
static unsigned int stb_decompress(unsigned char* output, unsigned char* i, unsigned int length)
{
unsigned int olen;
if (stb__in4(0) != 0x57bC0000) return 0;
if (stb__in4(4) != 0) return 0; // error! stream is > 4GB
olen = stb_decompress_length(i);
stb__barrier2 = i;
stb__barrier3 = i + length;
stb__barrier = output + olen;
stb__barrier4 = output;
i += 16;
stb__dout = output;
for (;;)
{
unsigned char* old_i = i;
i = stb_decompress_token(i);
if (i == old_i)
{
if (*i == 0x05 && i[1] == 0xfa)
{
IM_ASSERT(stb__dout == output + olen);
if (stb__dout != output + olen) return 0;
if (stb_adler32(1, output, olen) != (unsigned int)stb__in4(2))
return 0;
return olen;
}
else
{
IM_ASSERT(0); /* NOTREACHED */
return 0;
}
}
IM_ASSERT(stb__dout <= output + olen);
if (stb__dout > output + olen)
return 0;
}
}
//-----------------------------------------------------------------------------
// ProggyClean.ttf
// Copyright (c) 2004, 2005 Tristan Grimmer
// MIT license (see License.txt in http://www.upperbounds.net/download/ProggyClean.ttf.zip)
// Download and more information at http://upperbounds.net
//-----------------------------------------------------------------------------
// File: 'ProggyClean.ttf' (41208 bytes)
// Exported using binary_to_compressed_c.cpp
//-----------------------------------------------------------------------------
static const char proggy_clean_ttf_compressed_data_base85[11980 + 1] =
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static const char* GetDefaultCompressedFontDataTTFBase85()
{
return proggy_clean_ttf_compressed_data_base85;
}