Justin Spahr-Summers
93 lines
2.7 KiB
Objective-C
93 lines
2.7 KiB
Objective-C
/*
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Copyright 2011 Twitter, Inc.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this work except in compliance with the License.
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You may obtain a copy of the License in the LICENSE file, or at:
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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#import "TUINSView.h"
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#import "TUICGAdditions.h"
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#import "TUINSView+Hyperfocus.h"
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@implementation TUINSView (Hyperfocus)
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- (void)endHyperFocus:(BOOL)cancel
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{
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if(_hyperFocusView) {
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_hyperCompletion(cancel);
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_hyperCompletion = nil;
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TUIView *remove = _hyperFadeView;
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[TUIView animateWithDuration:0.3 animations:^{
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remove.alpha = 0.0;
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} completion:^(BOOL finished) {
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[remove removeFromSuperview];
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}];
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_hyperFadeView = nil;
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_hyperFocusView = nil;
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}
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}
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- (void)hyperFocus:(TUIView *)focusView completion:(void(^)(BOOL))completion
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{
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[self endHyperFocus:YES];
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CGRect focusRect = [focusView frameInNSView];
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CGFloat startRadius = 1.0;
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CGFloat endRadius = MAX(self.rootView.bounds.size.width, self.rootView.bounds.size.height);
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CGPoint center = CGPointMake(focusRect.origin.x + focusRect.size.width * 0.5, focusRect.origin.y + focusRect.size.height * 0.5);
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TUIView *fade = [[TUIView alloc] initWithFrame:self.rootView.bounds];
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fade.userInteractionEnabled = NO;
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fade.autoresizingMask = TUIViewAutoresizingFlexibleSize;
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fade.opaque = NO;
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fade.drawRect = ^(TUIView *v, CGRect r) {
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CGContextRef ctx = TUIGraphicsGetCurrentContext();
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CGFloat locations[] = {0.0, 0.25, 1.0};
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CGFloat components[] = {
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0.0, 0.0, 0.0, 0.0,
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0.0, 0.0, 0.0, 0.15,
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0.0, 0.0, 0.0, 0.55,
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};
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CGColorSpaceRef space = CGColorSpaceCreateDeviceRGB();
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CGGradientRef gradient = CGGradientCreateWithColorComponents(space, components, locations, 3);
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// CGContextSaveGState(ctx);
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// CGContextClipToRoundRect(ctx, self.rootView.bounds, 9);
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CGContextDrawRadialGradient(ctx, gradient, center, startRadius, center, endRadius, kCGGradientDrawsBeforeStartLocation | kCGGradientDrawsAfterEndLocation);
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// CGContextRestoreGState(ctx);
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CGGradientRelease(gradient);
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CGColorSpaceRelease(space);
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};
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[CATransaction begin];
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fade.alpha = 0.0;
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[self.rootView addSubview:fade];
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[CATransaction flush];
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[CATransaction commit];
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[TUIView animateWithDuration:0.2 animations:^{
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fade.alpha = 1.0;
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}];
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_hyperFocusView = focusView;
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_hyperFadeView = fade;
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_hyperCompletion = [completion copy];
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}
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@end
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