Initial community commit

Src/tataki/canvas/mac/osx_canvas_layer.cpp

@@ -0,0 +1,95 @@
+#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);
+}