ezgdi/cache.cpp

   1 #include "stdafx.h"
   2
   3 #include "override.h"
   4
   5 //CreateDIB‚ÌŒÄ‚Ñ�o‚µ‰ñ�”‚ª‚±‚Ì’l‚ð’´‚¦‚é‚Æ
   6 //ƒLƒƒƒbƒVƒ…—pƒrƒbƒgƒ}ƒbƒv‚ð‹�§“I‚É�¶�¬‚µ’¼‚·
   7 #define BITMAP_REDUCE_COUNTER 1024
   8
   9
  10 HDC CBitmapCache::CreateDC()
  11 {
  12    if(!m_hdc) {
  13       m_hdc = CreateCompatibleDC(NULL);
  14    }
  15    return m_hdc;
  16 }
  17
  18 HBITMAP CBitmapCache::CreateDIB(int width, int height, BYTE** lplpPixels)
  19 {
  20    SIZE& dibSize = m_dibSize;
  21    width  = (width + 3) & ~3;
  22
  23    if (dibSize.cx >= width && dibSize.cy >= height) {
  24       if (++m_counter < BITMAP_REDUCE_COUNTER) {
  25          *lplpPixels = m_lpPixels;
  26          return m_hbmp;
  27       }
  28       //ƒJƒEƒ“ƒ^’´‰ß
  29       //‚½‚¾‚µƒTƒCƒY‚ª‘S‚“¯‚¶‚È‚ç�Ä�¶�¬‚µ‚È‚¢
  30       if (dibSize.cx == width && dibSize.cy == height) {
  31          m_counter   = 0;
  32          *lplpPixels = m_lpPixels;
  33          return m_hbmp;
  34       }
  35    } else {
  36       if (dibSize.cx > width) {
  37          width  = dibSize.cx;
  38       }
  39       if (dibSize.cy > height) {
  40          height = dibSize.cy;
  41       }
  42    }
  43
  44    BITMAPINFOHEADER bmiHeader = { sizeof(BITMAPINFOHEADER), width, -height, 1, 32, BI_RGB };
  45    HBITMAP hbmpNew = CreateDIBSection(CreateDC(), (BITMAPINFO*)&bmiHeader, DIB_RGB_COLORS, (LPVOID*)lplpPixels, NULL, 0);
  46    if (!hbmpNew) {
  47       return NULL;
  48    }
  49
  50    //ƒ�ƒ‚ƒŠ•s‘«“™‚ÅhbmpNew==NULL‚Ì�ê�‡‚ð‘z’è‚µ�A
  51    //�¬Œ÷‚µ‚½‚Æ‚«‚Ì‚ÝƒLƒƒƒbƒVƒ…‚ð�X�V
  52    if (m_hbmp) {
  53       DeleteBitmap(m_hbmp);
  54    }
  55
  56    m_hbmp      = hbmpNew;
  57    dibSize.cx  = width;
  58    dibSize.cy  = height;
  59    //CreateDIBSection‚Í‘½•ªƒy�[ƒW‹«ŠE‚©ƒZƒOƒ�ƒ“ƒg‹«ŠE
  60    m_lpPixels  = *lplpPixels;
  61    m_counter   = 0;
  62    return m_hbmp;
  63 }
  64
  65 void CBitmapCache::FillSolidRect(COLORREF rgb, const RECT* lprc)
  66 {
  67    DrawHorizontalLine(lprc->left, lprc->top, lprc->right, rgb, lprc->bottom - lprc->top);
  68 /* LPBYTE lpPixels = m_lpPixels;
  69    const DWORD dwBmpBytes     = m_dibSize.cx * m_dibSize.cy;
  70    rgb = RGB2DIB(rgb);
  71
  72    //TODO: MMX or SSE‰»
  73    __asm {
  74       mov edi, dword ptr [lpPixels]
  75       mov ecx, dword ptr [dwBmpBytes]
  76       mov eax, dword ptr [rgb]
  77       cld
  78       rep stosd
  79    }*/
  80 // DWORD* p = (DWORD*)m_lpPixels;
  81 // DWORD* const pend = p + dwBmpBytes;
  82 // while (p < pend) {
  83 //    *p++ = rgb;
  84 // }
  85 }
  86
  87 //�…•½�ü‚ðˆø‚
  88 //(X1,Y1)           (X2,Y1)
  89 //   +-----------------+   ^
  90 //   |       rgb       |   | width
  91 //   +-----------------+   v
  92 void CBitmapCache::DrawHorizontalLine(int X1, int Y1, int X2, COLORREF rgb, int width)
  93 {
  94    if (!m_dibSize.cx || !m_dibSize.cy) {
  95       return;
  96    }
  97
  98    if (X1 > X2) {
  99       const int xx = X1;
 100       X1 = X2;
 101       X2 = xx;
 102    }
 103
 104    //ƒNƒŠƒbƒsƒ“ƒO
 105    const int xSize = m_dibSize.cx;
 106    const int ySize = m_dibSize.cy;
 107    X1 = Bound(X1, 0, xSize);
 108    X2 = Bound(X2, 0, xSize);
 109    Y1 = Bound(Y1, 0, ySize);
 110    width = Max(width, 1);
 111    const int Y2 = Bound(Y1 + width, 0, ySize);
 112
 113    rgb = RGB2DIB(rgb);
 114
 115    DWORD* lpPixels = (DWORD*)m_lpPixels + (Y1 * xSize + X1);
 116    const int Xd = X2 - X1;
 117    const int Yd = Y2 - Y1;
 118 /* for (int yy=Y1; yy<Y2; yy++) {
 119       for (int xx=X1; xx<X2; xx++) {
 120          _SetPixelV(xx, yy, rgb);
 121       }
 122    }
 123
 124    for (int yy=Y1; yy<Y2; yy++, lpPixels += xSize) {
 125       __asm {
 126          mov edi, dword ptr [lpPixels]
 127          mov ecx, dword ptr [Xd]
 128          mov eax, dword ptr [rgb]
 129          cld
 130          rep stosd
 131       }
 132    }*/
 133
 134    //–³ˆÓ–¡‚ÉƒAƒZƒ“ƒuƒŠ‰»
 135 #ifdef _M_IX86
 136    __asm {
 137       mov ebx, dword ptr [Yd]
 138       mov edx, dword ptr [lpPixels]
 139       mov esi, dword ptr [xSize]
 140       cld
 141 L1:
 142       mov edi, edx
 143       mov ecx, dword ptr [Xd]
 144       mov eax, dword ptr [rgb]
 145       rep stosd
 146       lea edx, dword ptr [edx+esi*4]
 147       dec ebx
 148       jnz L1
 149    }
 150 #else
 151    for (int yy=Y1; yy<Y2; yy++) {
 152       for (int xx=X1; xx<X2; xx++) {
 153          *( (DWORD*)m_lpPixels + (yy * xSize + xx) ) = rgb;
 154       }
 155    }
 156 #endif
 157 }