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Offset generated layer, to reduce PSD file size #20

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Offset generated layer, to reduce PSD file size #20

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16ebf14
Offset generated layer, to reduce PSD file size
nicolasgoutaland May 22, 2015
3a88689
Fixed groups generation bug
nicolasgoutaland May 22, 2015
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41 changes: 22 additions & 19 deletions MMLayershots/SFPSDWriter+MMLayershots.m
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Original file line number Diff line number Diff line change
Expand Up @@ -20,16 +20,16 @@ - (void)addImagesForLayer:(CALayer *)layer renderedToRootLayer:(CALayer *)rootLa
if (layer.hiddenBeforeHidingSublayers == NO) {
layer.hidden = NO;

if (layer.sublayers.count>0 && self.currentGroupDepth<PSD_MAX_GROUP_DEPTH) {
if (layer.sublayers.count > 0) {
// add self
UIImage *image = [rootLayer imageRepresentation];
UIImage *image = [layer imageRepresentation];

// Compute layer name
NSString *layerName = [self computeNameForLayer:layer];
[self addLayerWithCGImage:image.CGImage
andName:[layerName stringByAppendingString:@"-Content"]
andOpacity:1.0
andOffset:CGPointZero];
andOffset:[layer convertPoint:CGPointZero toLayer:nil]];

// hide own layer visuals while rendering children
NSMutableDictionary *layerProperties = [NSMutableDictionary new];
Expand All @@ -48,8 +48,14 @@ - (void)addImagesForLayer:(CALayer *)layer renderedToRootLayer:(CALayer *)rootLa
}

// create layer group
[self incrementCurrentGroupDepth];
[self openGroupLayerWithName:layerName];
BOOL newGroupAdded = NO;
if (self.currentGroupDepth<PSD_MAX_GROUP_DEPTH) {
// A New group was added
newGroupAdded = YES;

[self incrementCurrentGroupDepth];
[self openGroupLayerWithName:layerName];
}

// render children
[[layer.sublayers copy] enumerateObjectsUsingBlock:^(id obj, NSUInteger idx, BOOL *stop) {
Expand All @@ -61,25 +67,22 @@ - (void)addImagesForLayer:(CALayer *)layer renderedToRootLayer:(CALayer *)rootLa
[layer setValue:layerProperties[layerProperty] forKey:layerProperty];
}

// Close layer group
NSError *error = nil;
[self closeCurrentGroupLayerWithError:&error];
[self decrementCurrentGroupDepth];
if (error) {
NSLog(@"%@ - %@", error.localizedDescription, error.localizedRecoveryOptions);
// Close layer group if needed
if (newGroupAdded) {
NSError *error = nil;
[self closeCurrentGroupLayerWithError:&error];
[self decrementCurrentGroupDepth];
if (error) {
NSLog(@"%@ - %@", error.localizedDescription, error.localizedRecoveryOptions);
}
}
} else {
// base case

if (layer.sublayers>0) {
// reshow sublayers before taking a snapshot
[self showLayersInSubtree:layer];
}
// Base case
NSString *layerName = [self computeNameForLayer:layer];
[self addLayerWithCGImage:[rootLayer imageRepresentation].CGImage
[self addLayerWithCGImage:[layer imageRepresentation].CGImage
andName:layerName
andOpacity:1.0
andOffset:CGPointZero];
andOffset:[layer convertPoint:CGPointZero toLayer:nil]];
}

layer.hidden = YES;
Expand Down