mirror of
https://github.com/WinampDesktop/winamp.git
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309 lines
8.1 KiB
C++
309 lines
8.1 KiB
C++
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#include "./main.h"
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#include "./graphics.h"
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#include <math.h>
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#include <strsafe.h>
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INT GetColorDistance(COLORREF rgb1, COLORREF rgb2)
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{
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return (1000 * ((GetRValue(rgb1) - GetRValue(rgb2)) +
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(GetGValue(rgb1) - GetGValue(rgb2)) +
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(GetBValue(rgb1) - GetBValue(rgb2))))/ (3 * 255);
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}
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COLORREF GetDarkerColor(COLORREF rgb1, COLORREF rgb2)
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{
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INT g1 = (GetRValue(rgb1)*299 + GetGValue(rgb1)*587 + GetBValue(rgb1)*114);
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INT g2 = (GetRValue(rgb2)*299 + GetGValue(rgb2)*587 + GetBValue(rgb2)*114);
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return (g1 < g2) ? rgb1 : rgb2;
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}
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COLORREF BlendColors(COLORREF rgbTop, COLORREF rgbBottom, INT alpha)
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{
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if (alpha > 254) return rgbTop;
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if (alpha < 0) return rgbBottom;
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WORD k = (((255 - alpha)*255 + 127)/255);
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return RGB( (GetRValue(rgbTop)*alpha + k*GetRValue(rgbBottom) + 127)/255,
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(GetGValue(rgbTop)*alpha + k*GetGValue(rgbBottom) + 127)/255,
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(GetBValue(rgbTop)*alpha + k*GetBValue(rgbBottom) + 127)/255);
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}
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BOOL Image_Colorize(BYTE *pPixels, LONG cx, LONG cy, WORD bpp, COLORREF rgbBk, COLORREF rgbFg, BOOL removeAlpha)
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{
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LONG pitch, x;
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INT step;
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BYTE rFg, gFg, bFg;
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LPBYTE cursor, line;
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if (bpp < 24) return FALSE;
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step = (bpp>>3);
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pitch = cx*step;
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while (pitch%4) pitch++;
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rFg = GetRValue(rgbFg); gFg = GetGValue(rgbFg); bFg = GetBValue(rgbFg);
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INT bK = (bFg - GetBValue(rgbBk));
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INT gK = (gFg - GetGValue(rgbBk));
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INT rK = (rFg - GetRValue(rgbBk));
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if (24 == bpp)
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{
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for (line = pPixels; cy-- != 0; line += pitch )
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{
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for (x = cx, cursor = line; x-- != 0; cursor += 3)
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{
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cursor[0] = bFg - (bK*(255 - cursor[0])>>8);
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cursor[1] = gFg - (gK*(255 - cursor[1])>>8);
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cursor[2] = rFg - (rK*(255 - cursor[2])>>8);
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}
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}
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}
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else if (32 == bpp)
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{
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if (removeAlpha)
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{
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BYTE rBk, gBk, bBk;
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rBk = GetRValue(rgbBk); gBk = GetGValue(rgbBk); bBk = GetBValue(rgbBk);
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for (line = pPixels; cy-- != 0; line += pitch )
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{
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for (x = cx, cursor = line; x-- != 0; cursor += 4)
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{
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if (0x00 == cursor[3])
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{
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cursor[0] = bBk;
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cursor[1] = gBk;
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cursor[2] = rBk;
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cursor[3] = 0xFF;
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}
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else if (0xFF == cursor[3])
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{
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cursor[0] = bFg - (bK*(255 - cursor[0])>>8);
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cursor[1] = gFg - (gK*(255 - cursor[1])>>8);
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cursor[2] = rFg - (rK*(255 - cursor[2])>>8);
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}
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else
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{
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cursor[0] = ((bFg - (bK*(255 - cursor[0])>>8))*cursor[3] + (((255 - cursor[3])*255 + 127)/255)*bBk + 127)/255;
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cursor[1] = ((gFg - (gK*(255 - cursor[1])>>8))*cursor[3] + (((255 - cursor[3])*255 + 127)/255)*gBk + 127)/255;
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cursor[2] = ((rFg - (rK*(255 - cursor[2])>>8))*cursor[3] + (((255 - cursor[3])*255 + 127)/255)*rBk + 127)/255;
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cursor[3] = 0xFF;
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}
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}
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}
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}
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else
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{
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for (line = pPixels; cy-- != 0; line += pitch )
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{
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for (x = cx, cursor = line; x-- != 0; cursor += 4)
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{
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cursor[0] = bFg - (bK*(255 - cursor[0])>>8);
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cursor[1] = gFg - (gK*(255 - cursor[1])>>8);
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cursor[2] = rFg - (rK*(255 - cursor[2])>>8);
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}
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}
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}
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}
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return TRUE;
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}
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BOOL Image_BlendOnColorEx(BYTE *pPixels, INT bitmapCX, INT bitmapCY, LONG x, LONG y, LONG cx, LONG cy, WORD bpp, BOOL premult, COLORREF rgb)
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{
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LONG pitch;
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WORD r, g, b;
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INT step = (bpp>>3);
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LPBYTE line, cursor;
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pitch = bitmapCX * step;
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while (pitch%4) pitch++;
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if (bpp != 32)
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return TRUE;
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if (cy < 0) cy -= cy;
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r = GetRValue(rgb); g = GetGValue(rgb); b = GetBValue(rgb);
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INT ofs = (bitmapCY > 0) ? (bitmapCY - (y + cy)) : y;
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line = pPixels + pitch * ofs + x*step;
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if (premult)
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{
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for (; cy-- != 0; line += pitch)
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{
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for (x = cx, cursor = line; x-- != 0; cursor += 4)
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{
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if (0x00 == cursor[3])
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{
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cursor[0] = (BYTE)b;
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cursor[1] = (BYTE)g;
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cursor[2] = (BYTE)r;
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cursor[3] = 0xFF;
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}
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else if (cursor[3] != 0xFF)
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{
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WORD a = 255 - cursor[3];
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WORD destB = (cursor[0] * 255 + a * b + 127) / 255;
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WORD destG = (cursor[1] * 255 + a * g + 127) / 255;
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WORD destR = (cursor[2] * 255 + a * r + 127) / 255;
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cursor[0] = (destB > 0xFF) ? 0xFF : destB;
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cursor[1] = (destG > 0xFF) ? 0xFF : destG;
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cursor[2] = (destR > 0xFF) ? 0xFF : destR;
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cursor[3] = 0xFF;
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}
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}
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}
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}
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else
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{
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for (; cy-- != 0; line += pitch)
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{
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for (x = cx, cursor = line; x-- != 0; cursor += 4)
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{
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if (0x00 == cursor[3])
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{
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cursor[0] = (BYTE)b;
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cursor[1] = (BYTE)g;
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cursor[2] = (BYTE)r;
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cursor[3] = 0xFF;
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}
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else if (cursor[3] != 0xFF)
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{
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WORD a = (((255 - cursor[3])*255 + 127)/255);
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cursor[0] = (cursor[0]*cursor[3] + a*b + 127)/255;
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cursor[1] = (cursor[1]*cursor[3] + a*g + 127)/255;
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cursor[2] = (cursor[2]*cursor[3] + a*r + 127)/255;
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cursor[3] = 0xFF;
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}
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}
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}
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}
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return TRUE;
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}
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BOOL Image_BlendOnColor(HBITMAP hbmp, RECT *prcPart, BOOL premult, COLORREF rgb)
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{
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DIBSECTION dibsec;
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if (!hbmp || sizeof(DIBSECTION) != GetObject(hbmp, sizeof(DIBSECTION), &dibsec) ||
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BI_RGB != dibsec.dsBmih.biCompression || 1 != dibsec.dsBmih.biPlanes || dibsec.dsBm.bmBitsPixel != 32)
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return FALSE;
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return Image_BlendOnColorEx((BYTE*)dibsec.dsBm.bmBits, dibsec.dsBm.bmWidth, dibsec.dsBm.bmHeight,
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prcPart->left, prcPart->top,
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prcPart->right - prcPart->left, prcPart->bottom - prcPart->top,
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dibsec.dsBm.bmBitsPixel, premult, rgb);
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}
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HBITMAP Image_AnimateRotation(HDC hdc, HBITMAP bitmapFrame, INT frameCount, COLORREF rgbBk, BOOL fKeepSize)
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{
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if (NULL == bitmapFrame)
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return NULL;
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BITMAP bm;
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if (sizeof(BITMAP) != GetObject(bitmapFrame, sizeof(BITMAP), &bm))
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return NULL;
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if (bm.bmHeight < 0) bm.bmHeight = -bm.bmHeight;
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HBITMAP hbmp = NULL;
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HDC hdcDst = CreateCompatibleDC(hdc);
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HDC hdcSrc = CreateCompatibleDC(hdc);
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if (NULL != hdcDst && NULL != hdcSrc)
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{
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INT side;
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if (FALSE == fKeepSize)
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side = (INT)ceil(_hypot(bm.bmWidth, bm.bmHeight));
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else
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{
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side = bm.bmWidth;
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if (bm.bmHeight > side)
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side = bm.bmHeight;
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}
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hbmp = CreateCompatibleBitmap(hdc, side, side * frameCount);
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if (NULL != hbmp)
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{
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LONG centerX, centerY;
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centerX = side/2;
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centerY = side/2;
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XFORM xForm;
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ZeroMemory(&xForm, sizeof(XFORM));
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HBITMAP hbmpFrameOld = (HBITMAP)SelectObject(hdcSrc, bitmapFrame);
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HBITMAP hbmpOld = (HBITMAP)SelectObject(hdcDst, hbmp);
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RECT rcFill;
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SetRect(&rcFill, 0, 0, side, side * frameCount);
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SetBkColor(hdcDst, rgbBk);
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ExtTextOut(hdcDst, 0, 0, ETO_OPAQUE, &rcFill, NULL, 0, NULL);
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INT graphicsMode = SetGraphicsMode(hdcDst, GM_ADVANCED);
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INT top = (side - bm.bmHeight)/2;
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INT left = (side - bm.bmWidth)/2;
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for (INT i = 0; i < frameCount; i++)
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{
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double fangle = (double)(360/frameCount * i)/180. * 3.1415926;
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xForm.eM11 = (float)cos(fangle);
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xForm.eM12 = (float)sin(fangle);
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xForm.eM21 = (float)-sin(fangle);
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xForm.eM22 = (float)cos(fangle);
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xForm.eDx = (float)(centerX - cos(fangle)*centerX + sin(fangle)*centerY);
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xForm.eDy = (float)(centerY - cos(fangle)*centerY - sin(fangle)*centerX);
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SetWorldTransform(hdcDst, &xForm);
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BitBlt(hdcDst, left, top, bm.bmWidth, bm.bmHeight, hdcSrc, 0, 0, SRCCOPY);
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centerY += side;
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top += side;
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}
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SetGraphicsMode(hdcDst, graphicsMode);
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ModifyWorldTransform(hdcDst, NULL, MWT_IDENTITY);
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SelectObject(hdcSrc, hbmpFrameOld);
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SelectObject(hdcDst, hbmpOld);
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}
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}
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if (NULL != hdcDst) DeleteDC(hdcDst);
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if (NULL != hdcSrc) DeleteDC(hdcSrc);
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return hbmp;
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}
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BOOL Image_Premultiply(BYTE *pPixels, LONG cx, LONG cy)
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{
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LONG pitch, x;
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pitch = cx* 4;
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LPBYTE cursor, line;
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for (line = pPixels; cy-- != 0; line += pitch )
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{
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for (x = cx, cursor = line; x-- != 0; cursor += 4)
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{
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if (0x00 == cursor[3])
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{
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cursor[0] = 0x00;
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cursor[1] = 0x00;
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cursor[2] = 0x00;
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}
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else if (0xFF != cursor[3])
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{
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cursor[0] = (cursor[0] * cursor[3]) >> 8;
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cursor[1] = (cursor[1] * cursor[3]) >> 8;
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cursor[2] = (cursor[2] * cursor[3]) >> 8;
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}
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}
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}
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return TRUE;
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}
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BOOL Image_AlphaBlend(HDC hdcDest, int nXOriginDest, int nYOriginDest, int nWidthDest, int nHeightDest, HDC hdcSrc, int nXOriginSrc, int nYOriginSrc, int nWidthSrc, int nHeightSrc, BLENDFUNCTION blendFunction)
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{
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return AlphaBlend(hdcDest, nXOriginDest, nYOriginDest, nWidthDest, nHeightDest, hdcSrc, nXOriginSrc, nYOriginSrc, nWidthSrc, nHeightSrc, blendFunction);
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}
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