rostests/dibtests/vbltest/vbltest.c

   1 /*
   2  * Tests various blit and blend operations with different src
   3  * bit depths and scaling where possbile.
   4  *
   5  * Created by Gregor Schneider <grschneider AT gmail DOT com>, November 2008
   6 */
   7
   8 #include <windows.h>
   9 #include <tchar.h>
  10
  11 BOOL WINAPI GdiAlphaBlend(
  12                 HDC hdcDst, int xDst, int yDst, int wDst, int hDst,
  13                 HDC hdcSrc, int xSrc, int ySrc, int wSrc, int hSrc,
  14                 BLENDFUNCTION blendFunction);
  15
  16 BOOL WINAPI GdiTransparentBlt(
  17                 HDC hdcDst, int xDst, int yDst, int wDst, int hDst,
  18                 HDC hdcSrc, int xSrc, int ySrc, int wSrc, int hSrc,
  19                 UINT crTransparent);
  20
  21 #define CURRENT_BMPS 4
  22 #define CURRENT_ICONS 1
  23 #define SCALE 1.5
  24 #define OFFSET 5
  25
  26 HINSTANCE hInst;
  27 TCHAR szWindowClass[] = _T("testclass");
  28
  29 static LRESULT CALLBACK
  30 WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
  31 {
  32     static HBITMAP hbmList[CURRENT_BMPS];
  33     static HICON hicList[CURRENT_ICONS];
  34
  35     switch (message)
  36     {
  37         case WM_CREATE:
  38         {
  39             hbmList[0] = (HBITMAP)LoadImage(hInst, MAKEINTRESOURCE(100), IMAGE_BITMAP, 0, 0, LR_DEFAULTCOLOR);
  40             hbmList[1] = (HBITMAP)LoadImage(hInst, MAKEINTRESOURCE(400), IMAGE_BITMAP, 0, 0, LR_DEFAULTCOLOR);
  41             hbmList[2] = (HBITMAP)LoadImage(hInst, MAKEINTRESOURCE(800), IMAGE_BITMAP, 0, 0, LR_DEFAULTCOLOR);
  42             hbmList[3] = (HBITMAP)LoadImage(hInst, MAKEINTRESOURCE(2400), IMAGE_BITMAP, 0, 0, LR_DEFAULTCOLOR);
  43             hicList[0] = (HICON)LoadIcon(hInst, MAKEINTRESOURCE(3200));
  44             break;
  45         }
  46
  47         case WM_PAINT:
  48         {
  49             PAINTSTRUCT ps;
  50             HDC hdc, hdcMem;
  51             BITMAP bitmap;
  52             BLENDFUNCTION bfunc;
  53             int x = 0, y = 0, i;
  54             hdc = BeginPaint(hWnd, &ps);
  55             hdcMem = CreateCompatibleDC(hdc);
  56
  57             bfunc.AlphaFormat = AC_SRC_ALPHA;
  58             bfunc.BlendFlags = 0;
  59             bfunc.BlendOp = AC_SRC_OVER;
  60             bfunc.SourceConstantAlpha = 128;
  61
  62             /* bitmaps */
  63             for(i = 0; i < CURRENT_BMPS; i++)
  64             {
  65                 y = 0;
  66                 SelectObject(hdcMem, hbmList[i]);
  67                 GetObject(hbmList[i], sizeof(BITMAP), &bitmap);
  68
  69                 /* bit blt */
  70                 BitBlt(hdc, x, y, bitmap.bmWidth, bitmap.bmHeight, hdcMem, 0, 0, SRCCOPY);
  71                 y += bitmap.bmHeight + OFFSET;
  72
  73                 /* stretch blt, org size */
  74                 StretchBlt(hdc, x, y, bitmap.bmWidth, bitmap.bmHeight, hdcMem, 0, 0, bitmap.bmWidth, bitmap.bmHeight, SRCCOPY);
  75                 y += bitmap.bmHeight + OFFSET;
  76
  77                 /* stretch blt, scaled */
  78                 StretchBlt(hdc, x, y, bitmap.bmWidth*SCALE, bitmap.bmHeight*SCALE, hdcMem, 0, 0, bitmap.bmWidth, bitmap.bmHeight, SRCCOPY);
  79                 y += bitmap.bmHeight*SCALE + OFFSET;
  80
  81                 /* transparent blt, transparency: grey */
  82                 GdiTransparentBlt(hdc, x, y, bitmap.bmWidth, bitmap.bmHeight, hdcMem, 0, 0, bitmap.bmWidth, bitmap.bmHeight, 128*256*256+128*256+128);
  83                 y += bitmap.bmHeight + OFFSET;
  84
  85                 /* transparent blt, transparency: grey, scaled */
  86                 GdiTransparentBlt(hdc, x, y, bitmap.bmWidth*SCALE, bitmap.bmHeight*SCALE, hdcMem, 0, 0, bitmap.bmWidth, bitmap.bmHeight, 128*256*256+128*256+128);
  87                 y += bitmap.bmHeight*SCALE + OFFSET;
  88
  89                 /* alpha blend, org size */
  90                 GdiAlphaBlend(hdc, x, y, bitmap.bmWidth, bitmap.bmHeight, hdcMem, 0, 0, bitmap.bmWidth, bitmap.bmHeight, bfunc);
  91                 y += bitmap.bmHeight + OFFSET;
  92
  93                 /* alpha blend, scaled */
  94                 GdiAlphaBlend(hdc, x, y, bitmap.bmWidth*SCALE, bitmap.bmHeight*SCALE, hdcMem, 0, 0, bitmap.bmWidth, bitmap.bmHeight, bfunc);
  95                 y += bitmap.bmHeight*SCALE + OFFSET;
  96
  97                 x += bitmap.bmWidth*SCALE + OFFSET;
  98             }
  99
 100             /* icons */
 101             for(i = 0; i < CURRENT_ICONS; i++)
 102             {
 103                 y = 0;
 104                 /* pure icon */
 105                 DrawIcon(hdc, x, y, hicList[i]);
 106                 y += bitmap.bmHeight + OFFSET;
 107
 108                 /* normal icon using Ex */
 109                 DrawIconEx(hdc, x, y, hicList[i], 0, 0, 0, NULL, DI_NORMAL);
 110                 y += bitmap.bmHeight + OFFSET;
 111
 112                 /* normal icon using Ex with bigger size */
 113                 DrawIconEx(hdc, x, y, hicList[i], bitmap.bmWidth, bitmap.bmHeight, 0, NULL, DI_NORMAL);
 114                 y += bitmap.bmHeight + OFFSET;
 115
 116                 /* only icon using Ex */
 117                 DrawIconEx(hdc, x, y, hicList[i], 0, 0, 0, NULL, DI_IMAGE);
 118                 y += bitmap.bmHeight + OFFSET;
 119
 120                 /* mask using Ex */
 121                 DrawIconEx(hdc, x, y, hicList[i], 0, 0, 0, NULL, DI_MASK);
 122                 y += bitmap.bmHeight + OFFSET;
 123
 124                 x += bitmap.bmWidth*SCALE + OFFSET;
 125             }
 126
 127             DeleteDC(hdcMem);
 128             EndPaint(hWnd, &ps);
 129             break;
 130         }
 131
 132         case WM_DESTROY:
 133             PostQuitMessage(0);
 134             break;
 135         default:
 136             return DefWindowProc(hWnd, message, wParam, lParam);
 137     }
 138     return 0;
 139 }
 140
 141
 142 static ATOM
 143 MyRegisterClass(HINSTANCE hInstance)
 144 {
 145     WNDCLASSEX wcex;
 146
 147     wcex.cbSize = sizeof(WNDCLASSEX);
 148
 149     wcex.style         = CS_HREDRAW | CS_VREDRAW;
 150     wcex.lpfnWndProc   = WndProc;
 151     wcex.cbClsExtra    = 0;
 152     wcex.cbWndExtra    = 0;
 153     wcex.hInstance     = hInstance;
 154     wcex.hIcon         = NULL;
 155     wcex.hCursor       = LoadCursor(NULL, IDC_ARROW);
 156     wcex.hbrBackground = (HBRUSH)(COLOR_WINDOW+1);
 157     wcex.lpszMenuName  = NULL;
 158     wcex.lpszClassName = szWindowClass;
 159     wcex.hIconSm       = NULL;
 160
 161     return RegisterClassEx(&wcex);
 162 }
 163
 164
 165 static BOOL
 166 InitInstance(HINSTANCE hInstance, int nCmdShow)
 167 {
 168    HWND hWnd;
 169
 170    hInst = hInstance;
 171
 172    hWnd = CreateWindowEx(0,
 173                          szWindowClass,
 174                          _T("Various blit and blend operations"),
 175                          WS_OVERLAPPEDWINDOW,
 176                          CW_USEDEFAULT,
 177                          CW_USEDEFAULT,
 178                          640,
 179                          640,
 180                          NULL,
 181                          NULL,
 182                          hInstance,
 183                          NULL);
 184
 185    if (!hWnd)
 186    {
 187       return FALSE;
 188    }
 189
 190    ShowWindow(hWnd, nCmdShow);
 191    UpdateWindow(hWnd);
 192
 193    return TRUE;
 194 }
 195
 196
 197 int WINAPI
 198 _tWinMain(HINSTANCE hInstance,
 199                      HINSTANCE hPrevInstance,
 200                      LPTSTR    lpCmdLine,
 201                      int       nCmdShow)
 202 {
 203     MSG msg;
 204
 205     MyRegisterClass(hInstance);
 206
 207     if (!InitInstance(hInstance, nCmdShow))
 208     {
 209         return FALSE;
 210     }
 211
 212     while (GetMessage(&msg, NULL, 0, 0))
 213     {
 214         TranslateMessage(&msg);
 215         DispatchMessage(&msg);
 216     }
 217
 218     return (int)msg.wParam;
 219 }