src/Utils/MiscUI/IconBitmapUtils.h

   1 // TortoiseGit - a Windows shell extension for easy version control
   2
   3 // Copyright (C) 2009, 2011, 2014 - TortoiseSVN
   4
   5 // This program is free software; you can redistribute it and/or
   6 // modify it under the terms of the GNU General Public License
   7 // as published by the Free Software Foundation; either version 2
   8 // of the License, or (at your option) any later version.
   9
  10 // This program is distributed in the hope that it will be useful,
  11 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 // GNU General Public License for more details.
  14
  15 // You should have received a copy of the GNU General Public License
  16 // along with this program; if not, write to the Free Software Foundation,
  17 // 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  18 //
  19 #pragma once
  20 #include <Uxtheme.h>
  21 #include <GdiPlus.h>
  22
  23 typedef HRESULT (WINAPI *FN_GetBufferedPaintBits) (HPAINTBUFFER hBufferedPaint, RGBQUAD **ppbBuffer, int *pcxRow);
  24 typedef HPAINTBUFFER (WINAPI *FN_BeginBufferedPaint) (HDC hdcTarget, const RECT *prcTarget, BP_BUFFERFORMAT dwFormat, BP_PAINTPARAMS *pPaintParams, HDC *phdc);
  25 typedef HRESULT (WINAPI *FN_EndBufferedPaint) (HPAINTBUFFER hBufferedPaint, BOOL fUpdateTarget);
  26
  27
  28 /**
  29  * \ingroup utils
  30  * provides helper functions for converting icons to bitmaps
  31  */
  32 class IconBitmapUtils
  33 {
  34 public:
  35     IconBitmapUtils(void);
  36     ~IconBitmapUtils(void);
  37
  38     HBITMAP IconToBitmap(HINSTANCE hInst, UINT uIcon);
  39     HBITMAP IconToBitmapPARGB32(HICON hIcon);
  40     HBITMAP IconToBitmapPARGB32(HINSTANCE hInst, UINT uIcon);
  41     HRESULT Create32BitHBITMAP(HDC hdc, const SIZE *psize, __deref_opt_out void **ppvBits, __out HBITMAP* phBmp) const;
  42     HRESULT ConvertBufferToPARGB32(HPAINTBUFFER hPaintBuffer, HDC hdc, HICON hicon, SIZE& sizIcon);
  43     bool HasAlpha(__in Gdiplus::ARGB *pargb, SIZE& sizImage, int cxRow) const;
  44     HRESULT ConvertToPARGB32(HDC hdc, __inout Gdiplus::ARGB *pargb, HBITMAP hbmp, SIZE& sizImage, int cxRow) const;
  45
  46
  47 private:
  48     HMODULE hUxTheme;
  49     std::map<UINT, HBITMAP>     bitmaps;
  50
  51     FN_GetBufferedPaintBits pfnGetBufferedPaintBits;
  52     FN_BeginBufferedPaint pfnBeginBufferedPaint;
  53     FN_EndBufferedPaint pfnEndBufferedPaint;
  54 };