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Patterns support (mispositioned)
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@djphoenix
djphoenix committed May 14, 2015
1 parent f30383c commit 89e8c1b
Showing 1 changed file with 46 additions and 31 deletions.
77 changes: 46 additions & 31 deletions pxSVG/pxSVGRenderPath.m
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Expand Up @@ -21,6 +21,8 @@ @implementation pxSVGGradient
@end

@interface pxSVGPattern : pxSVGGroup
@property CATransform3D patternTransform;
@property CGRect patternBounds;
@end

@implementation pxSVGPattern
Expand All @@ -35,6 +37,7 @@ @interface pxSVGRenderPath ()

@interface pxSVGPatternLayer : CALayer
@property CALayer *patternLayer;
@property CATransform3D patternTransform;
@end

@implementation pxSVGPatternLayer
Expand All @@ -52,24 +55,27 @@ - (instancetype)init
return self;
}

- (BOOL)drawsAsynchronously
{
return NO;
}

- (void)drawInContext:(CGContextRef)ctx
{
CGRect r = CGContextGetClipBoundingBox(ctx);
CGContextTranslateCTM(ctx, -r.size.width/2-37.73, -r.size.height/2);
[self.patternLayer drawInContext:ctx];
{
CALayer *l = self.patternLayer;
UIGraphicsBeginImageContext([l frame].size);
CGContextRef ctx = UIGraphicsGetCurrentContext();
CGContextTranslateCTM(ctx, -l.frame.origin.x, -l.frame.origin.y);
[l renderInContext:ctx];
NSLog(@"%@",UIImagePNGRepresentation(UIGraphicsGetImageFromCurrentImageContext()));
UIGraphicsEndImageContext();
CGAffineTransform tr = CATransform3DGetAffineTransform(self.patternTransform);
CGSize sz = self.patternLayer.frame.size;
sz = CGSizeApplyAffineTransform(sz, tr);
CGPoint off = CGPointApplyAffineTransform((CGPoint){0,0}, tr); tr.tx = 0; tr.ty = 0;
off.x = fmod(off.x,sz.width);
off.y = fmod(off.y,sz.height);
while (off.y < r.size.height) {
CGFloat x = off.x;
while (x < r.size.width) {
CGContextSaveGState(ctx);
CGContextTranslateCTM(ctx, x, off.y);
CGContextConcatCTM(ctx, tr);
CGContextTranslateCTM(ctx, self.patternLayer.frame.origin.x, self.patternLayer.frame.origin.y);
[self.patternLayer renderInContext:ctx];
CGContextRestoreGState(ctx);
x += sz.width;
}
off.y += sz.height;
}
}

Expand Down Expand Up @@ -253,23 +259,35 @@ - (pxSVGPattern*)parsePattern:(pxXMLNode*)node
if (![op isKindOfClass:[pxSVGPattern class]]) return nil;
p = [pxSVGPattern new];
p.id = pid;
p.opacity = op.opacity;
p.fillOpacity = op.fillOpacity;
p.fillColor = op.fillColor;
p.fillDef = op.fillDef;
p.strokeColor = op.strokeColor;
p.strokeWidth = op.strokeWidth;
p.subnodes = op.subnodes;
p.transform = op.transform;
p.patternTransform = op.patternTransform;
p.patternBounds = op.patternBounds;
} else {
p = [pxSVGPattern new];
p.id = pid;
p.opacity = NAN;
p.fillOpacity = NAN;
[p loadAttributes:node.attributes];
NSMutableArray *sub = [NSMutableArray new];
for (pxXMLNode *n in node.childNodes) {
pxSVGObject *o = [self parseObject:n inheritAttributes:nil];
pxSVGObject *o = [self parseObject:n inheritAttributes:p];
if (o) [sub addObject:o];
}
p.subnodes = [NSArray arrayWithArray:sub];
p.transform = CATransform3DIdentity;
p.patternTransform = CATransform3DIdentity;
p.patternBounds = CGRectNull;
}
CGRect pr = p.bounds, tr = CGRectZero;
if ([node.attributes objectForKey:@"viewBox"]) {
NSArray *vb = [[node.attributes objectForKey:@"viewBox"] componentsSeparatedByCharactersInSet:[NSCharacterSet whitespaceCharacterSet]];
tr = (CGRect){
p.patternBounds = (CGRect){
{
[vb[0] doubleValue],
[vb[1] doubleValue]
Expand All @@ -288,22 +306,17 @@ - (pxSVGPattern*)parsePattern:(pxXMLNode*)node
[[node.attributes objectForKey:@"y"] doubleValue]
};
}
tr = (CGRect){
p.patternBounds = (CGRect){
o,{
[[node.attributes objectForKey:@"width"] doubleValue],
[[node.attributes objectForKey:@"height"] doubleValue]
}
};
} else {
tr = pr;
}
if (!CGRectEqualToRect(pr, tr)) {
p.transform = CATransform3DTranslate(p.transform, -pr.origin.x-pr.size.width/2, -pr.origin.y-pr.size.height/2, 0);
p.transform = CATransform3DScale(p.transform, tr.size.width/pr.size.width,tr.size.height/pr.size.height,1);
p.transform = CATransform3DTranslate(p.transform, tr.origin.x+tr.size.width/2, tr.origin.y+tr.size.height/2, 0);
} else if (CGRectIsNull(p.patternBounds)) {
p.patternBounds = p.bounds;
}
if ([node.attributes objectForKey:@"patternTransform"]) {
p.transform = CATransform3DConcat(p.transform, [pxSVGObject transformFromString:[node.attributes objectForKey:@"patternTransform"]]);
p.patternTransform = CATransform3DConcat(p.patternTransform, [pxSVGObject transformFromString:[node.attributes objectForKey:@"patternTransform"]]);
}
[self.defCache setObject:p forKey:pid];
return p;
Expand Down Expand Up @@ -388,8 +401,9 @@ - (CALayer *)makeLayerWithNode:(pxSVGObject*)node rootBounds:(CGRect)bounds;
}
if ([def isKindOfClass:[pxSVGPattern class]]) {
pxSVGPatternLayer *tl = [pxSVGPatternLayer new];
CALayer *pl = [self makeLayerWithNode:def rootBounds:[def bounds]];
CALayer *pl = [self makeLayerWithNode:def rootBounds:[def patternBounds]];
tl.patternLayer = pl;
tl.patternTransform = CATransform3DTranslate([def patternTransform],p.bounds.origin.x,p.bounds.origin.y,0);
tl.frame = p.bounds;
tl.opacity = isnan(node.fillOpacity)?1:node.fillOpacity;
CAShapeLayer *ml = [CAShapeLayer new];
Expand All @@ -406,11 +420,12 @@ - (CALayer *)makeLayerWithNode:(pxSVGObject*)node rootBounds:(CGRect)bounds;
} else {
l = [CALayer new];
}
l.frame = bounds;
l.frame = (CGRect){{-bounds.origin.x,-bounds.origin.y},bounds.size};
CATransform3D tr = node.transform;
tr = CATransform3DConcat(CATransform3DMakeTranslation( self.bounds.size.width/2, self.bounds.size.height/2, 0), tr);
tr = CATransform3DConcat(tr, CATransform3DMakeTranslation(-self.bounds.size.width/2, -self.bounds.size.height/2, 0));
tr = CATransform3DConcat(CATransform3DMakeTranslation( bounds.size.width/2, bounds.size.height/2, 0), tr);
tr = CATransform3DConcat(tr, CATransform3DMakeTranslation(-bounds.size.width/2, -bounds.size.height/2, 0));
l.transform = tr;
bounds.origin = CGPointZero;
l.opacity = node.opacity;
if ([node respondsToSelector:@selector(subnodes)]) {
for (pxSVGObject *n in [(id)node subnodes]) {
Expand Down

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