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#import "SkView.h"
#import "SkMatrix.h"
#import "SkCanvas.h"
class SkNSContainerView : public SkView {
public:
SkNSContainerView(NSView* parent){
fParent = parent;
fMatrix.reset();
}
void setBeforeChildMatrix(const SkMatrix& m) {fMatrix = m;}
protected:
virtual bool handleInval(const SkRect*) {
[fParent setNeedsDisplay:YES];
return true;
}
virtual void beforeChild(SkView* child, SkCanvas* canvas) {
canvas->concat(fMatrix);
}
virtual void onSizeChange() {
this->INHERITED::onSizeChange();
SkView::F2BIter iter(this);
SkView* view = iter.next();
while (view) {
view->setSize(this->width(), this->height());
view = iter.next();
}
}
private:
NSView* fParent;
SkMatrix fMatrix;
typedef SkView INHERITED;
};
////////////////////////////////////////////////////////////////////////////////
#import "SkCGUtils.h"
#import "SkNSView.h"
@implementation SkNSView
@synthesize offset, center, scale, rotation;
-(id) initWithFrame:(NSRect)frame {
self = [super initWithFrame:frame];
if (self) {
fView = new SkNSContainerView(self);
fView->setVisibleP(true);
NSSize viewSize = [self bounds].size;
fView->setSize(viewSize.width, viewSize.height);
[self resetTransformations];
}
return self;
}
-(void) dealloc {
delete fView;
[super dealloc];
}
-(void) addSkView:(SkView*)aView {
fView->attachChildToFront(aView);
}
-(BOOL) isFlipped {
return YES;
}
-(BOOL) inLiveResize {
if (fView != nil) {
NSSize s = [self bounds].size;
fView->setSize(s.width, s.height);
[self setNeedsDisplay:YES];
}
return [super inLiveResize];
}
-(void) resetTransformations {
offset = NSMakePoint(0, 0);
center = NSMakePoint(fView->width() / 2.0, fView->height() / 2.0);
rotation = 0;
scale = 1.0;
}
-(void) drawRect:(NSRect)dirtyRect {
//TODO -- check if our NSView is backed by a CALayer, and possibly use
//skia's gpu backend
if (fView != nil) {
SkBitmap bitmap;
bitmap.setConfig(SkBitmap::kARGB_8888_Config, fView->width(),
fView->height());
bitmap.allocPixels();
SkCanvas canvas(bitmap);
//Apply view transformations so they can be applied to individual
//child views without affecting the parent's clip/matrix
SkMatrix matrix;
matrix.setTranslate(offset.x + center.x, offset.y + center.y);
matrix.preRotate(rotation);
matrix.preScale(scale, scale);
matrix.preTranslate(-center.x, -center.y);
fView->setBeforeChildMatrix(matrix);
fView->draw(&canvas);
//Draw bitmap
NSImage * image = [[NSImage alloc] init];
CGImageRef cgimage = SkCreateCGImageRef(bitmap);
NSBitmapImageRep * bitmapRep =
[[NSBitmapImageRep alloc] initWithCGImage:cgimage];
[image addRepresentation:bitmapRep];
[image setSize:NSMakeSize(fView->width(), fView->height())];
[image setFlipped:TRUE];
[image drawAtPoint:NSMakePoint(0, 0)
fromRect: NSZeroRect
operation: NSCompositeSourceOver
fraction: 1.0];
[image release];
CGImageRelease(cgimage);
[bitmapRep release];
}
}
@end
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