Implements the right-mouse popup menus in the editor in SDL to make it match to Windows.

Engine/source/gui/editor/guiPopupMenuCtrl.h

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+//-----------------------------------------------------------------------------
+// Copyright (c) 2012 GarageGames, LLC
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to
+// deal in the Software without restriction, including without limitation the
+// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+// sell copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+// IN THE SOFTWARE.
+//-----------------------------------------------------------------------------
+
+#pragma once
+
+#ifndef GUI_POPUP_MENU_CTRL_H
+#define GUI_POPUP_MENU_CTRL_H
+
+#ifndef _GUITEXTLISTCTRL_H_
+#include "gui/controls/guiTextListCtrl.h"
+#endif
+
+#ifndef _GUIMENUBAR_H_
+#include "gui/editor/guiMenuBar.h"
+#endif
+
+#ifndef _POPUPMENU_H_
+#include "platform/menus/popupMenu.h"
+#endif
+
+class GuiPopupMenuBackgroundCtrl;
+
+class GuiPopupMenuTextListCtrl : public GuiTextListCtrl
+{
+   friend class GuiPopupMenuBackgroundCtrl;
+
+private:
+   typedef GuiTextListCtrl Parent;
+
+   GuiPopupMenuBackgroundCtrl* mBackground;
+
+public:
+   bool isSubMenu; //  Indicates that this text list is in a submenu
+   Point2I maxBitmapSize;
+   GuiMenuBar::Menu* mMenu;
+   GuiMenuBar* mMenuBar;
+   PopupMenu* mPopup;
+
+   GuiPopupMenuTextListCtrl();
+
+   // GuiControl overloads:
+   bool onKeyDown(const GuiEvent &event);
+   void onMouseDown(const GuiEvent &event);
+   void onMouseUp(const GuiEvent &event);
+   void onRenderCell(Point2I offset, Point2I cell, bool selected, bool mouseOver);
+
+   virtual void onCellHighlighted(Point2I cell); //  Added
+};
+
+class GuiPopupMenuBackgroundCtrl : public GuiControl
+{
+   typedef GuiControl Parent;
+
+protected:
+   GuiPopupMenuTextListCtrl *mTextList;
+
+public:
+   GuiPopupMenuBackgroundCtrl(GuiPopupMenuTextListCtrl* textList);
+   void onMouseDown(const GuiEvent &event);
+   void onMouseMove(const GuiEvent &event);
+   void onMouseDragged(const GuiEvent &event);
+
+   void close();
+};
+
+#endif