95 lines
2.9 KiB
C++
95 lines
2.9 KiB
C++
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#include <tataki/canvas/bltcanvas.h>
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inline float QuartzBlue(RGB32 color)
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{
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unsigned char *pixel = (unsigned char *)&color;
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return pixel[0] / 255.f;
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}
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inline float QuartzGreen(RGB32 color)
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{
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unsigned char *pixel = (unsigned char *)&color;
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return pixel[1] / 255.f;
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}
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inline float QuartzRed(RGB32 color)
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{
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unsigned char *pixel = (unsigned char *)&color;
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return pixel[2] / 255.f;
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}
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inline float QuartzAlpha(RGB32 color)
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{
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unsigned char *pixel = (unsigned char *)&color;
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return pixel[3] / 255.f;
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}
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BltCanvas::BltCanvas(int width, int height, OSWINDOWHANDLE wnd)
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{
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CGrafPtr qdcontext = GetWindowPort(wnd);
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CGContextRef temp;
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QDBeginCGContext(qdcontext, &temp);
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CGSize size = CGSizeMake(width, height);
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layer = CGLayerCreateWithContext(temp, size, NULL);
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context = CGLayerGetContext(layer);
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QDEndCGContext(qdcontext, &temp);
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}
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void BltCanvas::blit(int srcx, int srcy, Canvas *dest, int dstx, int dsty, int dstw, int dsth)
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{
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CGPoint point = CGPointMake(dstx-srcx, dsty-srcy);
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CGContextDrawLayerAtPoint(dest->getHDC(), point, layer);
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}
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void BltCanvas::blitToRect(api_canvas *canvas, RECT *src, RECT *dst, int alpha)
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{
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CGContextRef dest = canvas->getHDC();
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CGContextSaveGState(dest);
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CGContextSetAlpha(dest, (float)alpha/255.f);
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// TODO: deal with width properly
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CGRect rect = CGRectMake(dst->left - src->left, dst->top - src->top, dst->right - dst->left, dst->bottom - dst->top);
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CGContextDrawLayerInRect(dest, rect, layer);
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CGContextRestoreGState(dest);
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}
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void BltCanvas::stretchblit(int srcx, int srcy, int srcw, int srch, Canvas *dest, int dstx, int dsty, int dstw, int dsth)
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{
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CGContextSaveGState(context);
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CGContextTranslateCTM(context, srcx, srcy);
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CGRect rect = CGRectMake(dstx, dsty, dstw, dsth);
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CGContextDrawLayerInRect(dest->getHDC(), rect, layer);
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CGContextRestoreGState(context);
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}
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void BltCanvas::stretchToRectAlpha(api_canvas *canvas, RECT *src, RECT *dst, int alpha)
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{
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CGContextRef dest = canvas->getHDC();
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CGContextSaveGState(dest);
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CGContextSetAlpha(dest, (float)alpha/255.f);
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// TODO: deal with width properly
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CGRect rect = CGRectMake(dst->left - src->left, dst->top - src->top, dst->right - dst->left, dst->bottom - dst->top);
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CGContextDrawLayerInRect(dest, rect, layer);
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CGContextRestoreGState(dest);
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}
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void BltCanvas::DestructiveResize(int w, int h, int nb_bpp)
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{
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CGSize size = CGSizeMake(w, h);
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CGLayerRef newlayer = CGLayerCreateWithContext(context, size, NULL);
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CGContextRelease(context);
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CGLayerRelease(layer);
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layer = newlayer;
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context = CGLayerGetContext(layer);
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}
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void BltCanvas::fillBits(ARGB32 color)
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{
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CGContextSetRGBFillColor(context,
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QuartzRed(color), // red
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QuartzGreen(color), // green
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QuartzBlue(color), // blue
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QuartzAlpha(color) // alpha
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);
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CGContextFillRect(context, CGRectInfinite);
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}
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