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