widget/windows/nsWindowGfx.h

   1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* This Source Code Form is subject to the terms of the Mozilla Public
   3  * License, v. 2.0. If a copy of the MPL was not distributed with this
   4  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   5
   6 #ifndef WindowGfx_h__
   7 #define WindowGfx_h__
   8
   9 /*
  10  * nsWindowGfx - Painting and aceleration.
  11  */
  12
  13 #include "nsWindow.h"
  14 #include <imgIContainer.h>
  15
  16 class nsISVGPaintContext;
  17
  18 class nsWindowGfx {
  19  public:
  20   enum IconSizeType { kSmallIcon, kRegularIcon };
  21   static mozilla::LayoutDeviceIntSize GetIconMetrics(IconSizeType aSizeType);
  22
  23   /**
  24    * Renders an imgIContainer to a HICON.
  25    * aContainer - the image to render.
  26    * aSVGContext - Optional CSS context properties to apply. Ignored if the
  27    *               container is not an SVG image.
  28    * aIsCursor - true if this icon will be used as a mouse cursor.
  29    * aHotSpot - the position of the hot spot for a mouse cursor.
  30    * aScaledSize - the size of the icon to generate.
  31    * aIcon - Out parameter for the returned HICON. Required.
  32    */
  33   static nsresult CreateIcon(imgIContainer* aContainer,
  34                              nsISVGPaintContext* aSVGContext, bool aIsCursor,
  35                              mozilla::LayoutDeviceIntPoint aHotspot,
  36                              mozilla::LayoutDeviceIntSize aScaledSize,
  37                              HICON* aIcon);
  38
  39  private:
  40   /**
  41    * Cursor helpers
  42    */
  43   static uint8_t* Data32BitTo1Bit(uint8_t* aImageData, uint32_t aWidth,
  44                                   uint32_t aHeight);
  45   static HBITMAP DataToBitmap(uint8_t* aImageData, uint32_t aWidth,
  46                               uint32_t aHeight, uint32_t aDepth);
  47 };
  48
  49 #endif  // WindowGfx_h__