examples/blitting.c · MicroOS/MiniGUI

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examples

blitting.c

blitting.c 2.86 KB

{
 int tox = 800, toy = 800;
 int count;
 BITMAP bitmap;
 unsigned int start_tick, end_tick;

/* Load the bitmap from the file. */
 if (LoadBitmap (hdc, &bitmap, "res/icon.bmp"))
 return;

bitmap.bmType = BMP_TYPE_ALPHACHANNEL;

/* Fill a box with the bitmap with alpha channel. */
 start_tick = GetTickCount ();
 count = 1000;
 while (count--) {
 tox = rand() % 800;
 toy = rand() % 800;

/* Set a random alpha channel. */
 bitmap.bmAlpha = rand() % 256;
 /* Fill the box. */
 FillBoxWithBitmap (hdc, tox, toy, 0, 0, &bitmap);
 }
 end_tick = GetTickCount ();
 TellSpeed (hwnd, start_tick, end_tick, "Alpha Blended Bitmap", 1000);

bitmap.bmType = BMP_TYPE_ALPHACHANNEL | BMP_TYPE_COLORKEY;
 /* Set the color key (the transparent pixel) of the bitmap. */
 bitmap.bmColorKey = GetPixelInBitmap (&bitmap, 0, 0);

/* Fill a box with the bitmap with alpha channel and color key. */
 start_tick = GetTickCount ();
 count = 1000;
 while (count--) {
 tox = rand() % 800;
 toy = rand() % 800;

UnloadBitmap (&bitmap);
}

{
 /* Create a memory DC which hanve alpha per-pixel. */
 mem_dc = CreateMemDC (400, 100, 16, MEMDC_FLAG_HWSURFACE | MEMDC_FLAG_SRCALPHA,
 0x0000F000, 0x00000F00, 0x000000F0, 0x0000000F);

/* Set brush color and fill a box. */
 SetBrushColor (mem_dc, RGBA2Pixel (mem_dc, 0xFF, 0xFF, 0x00, 0xFF));
 FillBox (mem_dc, 0, 0, 200, 50);

/* Set another brush color and fill a box */
 SetBrushColor (mem_dc, RGBA2Pixel (mem_dc, 0xFF, 0xFF, 0x00, 0x40));
 FillBox (mem_dc, 200, 0, 200, 50);

/* Set another brush color and fill a box */
 SetBrushColor (mem_dc, RGBA2Pixel (mem_dc, 0xFF, 0xFF, 0x00, 0x80));
 FillBox (mem_dc, 0, 50, 200, 50);

/* Set another brush color and fill a box */
 SetBrushColor (mem_dc, RGBA2Pixel (mem_dc, 0xFF, 0xFF, 0x00, 0xC0));
 FillBox (mem_dc, 200, 50, 200, 50);
 SetBkMode (mem_dc, BM_TRANSPARENT);

/* Set a text color and output the text */
 SetTextColor (mem_dc, RGBA2Pixel (mem_dc, 0x00, 0x00, 0x00, 0x80));
 TabbedTextOut (mem_dc, 0, 0, "Memory DC with alpha.\n"
 "The source DC have alpha per-pixel.");

/* Blitting to a client DC. */
 start_tick = GetTickCount ();
 count = 100;
 while (count--) {
 BitBlt (mem_dc, 0, 0, 400, 100, hdc, rand () % 800, rand () % 800);
 }
 end_tick = GetTickCount ();
 TellSpeed (hwnd, start_tick, end_tick, "Alpha Blit", 100);

/* delete the momory DC. */
 DeleteMemDC (mem_dc);
}

一键复制编辑原始数据按行查看历史

Vincent Wei 提交于 2017年05月29日 12:20 +08:00 . initical commit

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{
 int tox = 800, toy = 800;
 int count;
 BITMAP bitmap;
 unsigned int start_tick, end_tick;

 /* Load the bitmap from the file. */
 if (LoadBitmap (hdc, &bitmap, "res/icon.bmp"))
 return;

 bitmap.bmType = BMP_TYPE_ALPHACHANNEL;

 /* Fill a box with the bitmap with alpha channel. */
 start_tick = GetTickCount ();
 count = 1000;
 while (count--) {
 tox = rand() % 800;
 toy = rand() % 800;

 /* Set a random alpha channel. */
 bitmap.bmAlpha = rand() % 256;
 /* Fill the box. */
 FillBoxWithBitmap (hdc, tox, toy, 0, 0, &bitmap);
 }
 end_tick = GetTickCount ();
 TellSpeed (hwnd, start_tick, end_tick, "Alpha Blended Bitmap", 1000);

 bitmap.bmType = BMP_TYPE_ALPHACHANNEL | BMP_TYPE_COLORKEY;
 /* Set the color key (the transparent pixel) of the bitmap. */
 bitmap.bmColorKey = GetPixelInBitmap (&bitmap, 0, 0);

 /* Fill a box with the bitmap with alpha channel and color key. */
 start_tick = GetTickCount ();
 count = 1000;
 while (count--) {
 tox = rand() % 800;
 toy = rand() % 800;

 /* Set a random alpha channel. */
 bitmap.bmAlpha = rand() % 256;
 /* Fill the box. */
 FillBoxWithBitmap (hdc, tox, toy, 0, 0, &bitmap);
 }
 end_tick = GetTickCount ();
 TellSpeed (hwnd, start_tick, end_tick, "Alpha Blended Transparent Bitmap", 1000);

 UnloadBitmap (&bitmap);
}

{
 /* Create a memory DC which hanve alpha per-pixel. */
 mem_dc = CreateMemDC (400, 100, 16, MEMDC_FLAG_HWSURFACE | MEMDC_FLAG_SRCALPHA,
 0x0000F000, 0x00000F00, 0x000000F0, 0x0000000F);

 /* Set brush color and fill a box. */
 SetBrushColor (mem_dc, RGBA2Pixel (mem_dc, 0xFF, 0xFF, 0x00, 0xFF));
 FillBox (mem_dc, 0, 0, 200, 50);

 /* Set another brush color and fill a box */
 SetBrushColor (mem_dc, RGBA2Pixel (mem_dc, 0xFF, 0xFF, 0x00, 0x40));
 FillBox (mem_dc, 200, 0, 200, 50);

 /* Set another brush color and fill a box */
 SetBrushColor (mem_dc, RGBA2Pixel (mem_dc, 0xFF, 0xFF, 0x00, 0x80));
 FillBox (mem_dc, 0, 50, 200, 50);

 /* Set another brush color and fill a box */
 SetBrushColor (mem_dc, RGBA2Pixel (mem_dc, 0xFF, 0xFF, 0x00, 0xC0));
 FillBox (mem_dc, 200, 50, 200, 50);
 SetBkMode (mem_dc, BM_TRANSPARENT);

 /* Set a text color and output the text */
 SetTextColor (mem_dc, RGBA2Pixel (mem_dc, 0x00, 0x00, 0x00, 0x80));
 TabbedTextOut (mem_dc, 0, 0, "Memory DC with alpha.\n"
 "The source DC have alpha per-pixel.");

 /* Blitting to a client DC. */
 start_tick = GetTickCount ();
 count = 100;
 while (count--) {
 BitBlt (mem_dc, 0, 0, 400, 100, hdc, rand () % 800, rand () % 800);
 }
 end_tick = GetTickCount ();
 TellSpeed (hwnd, start_tick, end_tick, "Alpha Blit", 100);

 /* delete the momory DC. */
 DeleteMemDC (mem_dc);
}