LibrePCB

/*
 * LibrePCB - Professional EDA for everyone!
 * Copyright (C) 2013 LibrePCB Developers, see AUTHORS.md for contributors.
 * https://librepcb.org/
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

#ifndef LIBREPCB_EDITOR_EDITORTOOLBOX_H
#define LIBREPCB_EDITOR_EDITORTOOLBOX_H

/*******************************************************************************
 *  Includes
 ******************************************************************************/
#include <librepcb/core/library/resource.h>
#include <librepcb/core/types/point.h>
#include <librepcb/core/types/uuid.h>

#include <QtCore>
#include <QtWidgets>

#include <optional>

/*******************************************************************************
 *  Namespace / Forward Declarations
 ******************************************************************************/
namespace librepcb {

class ComponentInstance;
class Path;
class Workspace;
class WorkspaceLibraryDb;

namespace editor {

class MenuBuilder;

/*******************************************************************************
 *  Class EditorToolbox
 ******************************************************************************/

/**
 * @brief The EditorToolbox class provides some useful general purpose methods
 *        for editors (i.e. GUI stuff)
 */
class EditorToolbox final {
  Q_DECLARE_TR_FUNCTIONS(EditorToolbox)

public:
  // Constructors / Destructor
  EditorToolbox() = delete;
  EditorToolbox(const EditorToolbox& other) = delete;
  ~EditorToolbox() = delete;

  // Operator Overloadings
  EditorToolbox& operator=(const EditorToolbox& rhs) = delete;

  // Static Methods

  /**
   * @brief Detect if the operating system's UI theme is dark
   *
   * @warning  This function needs to be called once during application
   *           startup, before the applications QPalette is modified!
   *
   * @retval true   System theme is dark.
   * @retval false  System theme is light or could not be determined.
   */
  static bool isSystemThemeDark() noexcept;

  /**
   * @brief Get the platform-specific display text for a keyboard modifier
   *
   * Intended for messages which refer to a modifier key (e.g. "press Ctrl to
   * ..."). On macOS, the corresponding symbol (e.g. "⌘" for Control) is
   * returned to match the native look & feel and the key which is actually
   * used (the Command key is mapped to Qt::ControlModifier on macOS, while
   * the physical Control key does not trigger the action). On other platforms,
   * the textual name (e.g. "Ctrl") is returned.
   *
   * @param modifier  The keyboard modifier (e.g. Qt::ControlModifier).
   *
   * @return The display text for the given modifier.
   */
  static QString modifierKeyText(Qt::KeyboardModifier modifier) noexcept;

  /**
   * @brief Escape newlines to convert a multi-line to a single-line string
   *
   * @param s     Input string.
   * @return Input string with `\n` converted to `\\n`.
   */
  static QString toSingleLine(const QString& s) noexcept;

  /**
   * @brief Replace newlines to convert a single-line to a multi-line string
   *
   * @param s     Input string.
   * @return Input string with `\\n` converted to `\n`.
   */
  static QString toMultiLine(const QString& s) noexcept;

  /**
   * @brief Clean/normalize comma-separated keywords from user input
   *
   * @param userInput   Raw user input (e.g. "Foo, bar,foo, ").
   *
   * @return Lowercase with whitespaces & duplicates removed (e.g. "foo,bar").
   */
  static QString cleanKeywords(const QString& userInput) noexcept;

  /**
   * @brief Make a circuit identifier sortable
   *
   * Transform a circuit identifier (e.g. component signal name) to allow
   * a more natural sort algorithm. For example the identifier "!OUT" is
   * converted to "OUT " to have "!OUT" next to "OUT" while still keeping
   * the sort order deterministic (due to the trailing space).
   *
   * @param identifier  Pin name, signal name etc. (e.g. "!EN").
   *
   * @return The passed identifier, possibly modified for sorting.
   */
  static QString sortableCircuitIdentifier(QString identifier) noexcept;

  /**
   * @brief Determine points of a ::librepcb::Path to snap the cursor
   *
   * @param path  Any path.
   *
   * @return All path vertex positions, plus middle and center points of
   *         180° arcs.
   */
  static QSet<Point> snapCandidatesFromPath(const Path& path) noexcept;

  /**
   * @brief Determine points of a :circle to snap the cursor
   *
   * @param center    Circle center.
   * @param diameter  Circle diameter.
   *
   * @return The center point, plus north/east/south/west points.
   */
  static QSet<Point> snapCandidatesFromCircle(const Point& center,
                                              PositiveLength diameter) noexcept;

  /**
   * @brief Determine position to snap the cursor to
   *
   * @param cursorPos       Hovered cursor position.
   * @param gridInterval    Grid interval.
   * @param snapCandidates  Possible snapping positios.
   * @param snapped         Whether the cursor has snapped or not.
   *
   * @return Closest position, either from `snapPositions` or on the grid.
   */
  static Point snapPosition(Point cursorPos, PositiveLength gridInterval,
                            const QSet<Point>& snapCandidates,
                            bool* snapped = nullptr) noexcept;

  /**
   * @brief Load a SVG QIcon which is properly colorized
   *
   * @param file  Resource file path (e.g. ":/fa/solid/globe.svg")
   *
   * @return A QIcon with the colorized SVG
   */
  static QIcon svgIcon(const QString& file) noexcept;

  /**
   * @brief Remove (hide) a whole row in a QFormLayout
   *
   * @param label   The label of the row to remove.
   */
  static void removeFormLayoutRow(QLabel& label) noexcept;

  /**
   * @brief Delete a QLayout item with all its children
   *
   * @param item    The item to delete. Must not be nullptr!
   */
  static void deleteLayoutItemRecursively(QLayoutItem* item) noexcept;

  /**
   * @brief Set the focus to the first widget of a toolbar and iterate through
   *
   * - The tab order of all widgets of the passed toolbar will be configured
   *   from left to right resp. top to bottom.
   * - After the last widget, the tab order is followed by a custom widget.
   * - The first widget of the passed toolbar will get the focus.
   *
   * Intended for the command toolbar to enter focus from the graphics view,
   * navigate though all the toolbar widgets, and then return the focus
   * back to the graphics view.
   *
   * @param toolBar               The toolbar to set the focus.
   * @param returnFocusToWidget   Widget which shall have the focus after
   *                              the last widget of the toolbar.
   * @return  True if there was at least one widget and the focus has been
   *          set. False if there was no widget and the focus was not set.
   */
  static bool startToolBarTabFocusCycle(QToolBar& toolBar,
                                        QWidget& returnFocusToWidget) noexcept;

  /**
   * @brief Collect all relevant resources for a given component instance
   *
   * Resources will be collected from both the workspace library and the
   * project library.
   *
   * @param db          Workspace library database.
   * @param cmp         Component instance
   * @param filterDev   If provided, only get resources for these devices.
   *                    Otherwise, resources for all devices are returned.
   * @return List of all relevant resources.
   */
  static ResourceList getComponentResources(
      const WorkspaceLibraryDb& db, const ComponentInstance& cmp,
      const std::optional<Uuid>& filterDev = std::nullopt) noexcept;

  /**
   * @brief Add relevant resources of a component instance to a context menu
   *
   * This calls #getComponentResources() and then adds the results to a
   * context menu.
   *
   * @param ws          Workspace.
   * @param mb          Menu builder to add the new menu items.
   * @param cmp         See #getComponentResources().
   * @param filterDev   See #getComponentResources().
   * @param editor      Parent widget, used for asynchronously opening
   *                    resources when a menu item is triggered.
   * @param root        Root menu (for ownership).
   */
  static void addResourcesToMenu(const Workspace& ws, MenuBuilder& mb,
                                 const ComponentInstance& cmp,
                                 const std::optional<Uuid>& filterDev,
                                 QPointer<QWidget> editor,
                                 QMenu& root) noexcept;

private:
  /**
   * @brief Helper for #removeFormLayoutRow(QLabel&)
   *
   * @param layout  The layout to look for the label.
   * @param label   The label to remove from the layout.
   *
   * @retval true on success.
   * @retval false if the label was not found in a form layout.
   */
  static bool removeFormLayoutRow(QLayout& layout, QLabel& label) noexcept;

  /**
   * @brief Helper for #removeFormLayoutRow()
   *
   * @param item  The item to hide.
   */
  static void hideLayoutItem(QLayoutItem& item) noexcept;

  /**
   * @brief Helper for #addResourcesToMenu()
   *
   * @param ws            Workspace.
   * @param mpn           Part MPN.
   * @param manufacturer  Part manufacturer name.
   * @param parent        Parent widget.
   */
  static void searchAndOpenDatasheet(const Workspace& ws, const QString& mpn,
                                     const QString& manufacturer,
                                     QPointer<QWidget> parent) noexcept;
};

/*******************************************************************************
 *  End of File
 ******************************************************************************/

}  // namespace editor
}  // namespace librepcb

#endif