Pariece McKinney
125 lines
4.6 KiB
Objective-C
125 lines
4.6 KiB
Objective-C
/*
|
|
Copyright (c) 2015, Apple Inc. All rights reserved.
|
|
|
|
Redistribution and use in source and binary forms, with or without modification,
|
|
are permitted provided that the following conditions are met:
|
|
|
|
1. Redistributions of source code must retain the above copyright notice, this
|
|
list of conditions and the following disclaimer.
|
|
|
|
2. Redistributions in binary form must reproduce the above copyright notice,
|
|
this list of conditions and the following disclaimer in the documentation and/or
|
|
other materials provided with the distribution.
|
|
|
|
3. Neither the name of the copyright holder(s) nor the names of any contributors
|
|
may be used to endorse or promote products derived from this software without
|
|
specific prior written permission. No license is granted to the trademarks of
|
|
the copyright holders even if such marks are included in this software.
|
|
|
|
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
|
|
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE
|
|
FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
|
|
SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
|
|
CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
|
|
OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
|
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*/
|
|
|
|
|
|
#import "ORKTextButton.h"
|
|
|
|
|
|
@implementation ORKTextButton
|
|
|
|
+ (instancetype)buttonWithType:(UIButtonType)buttonType {
|
|
assert(buttonType == UIButtonTypeCustom);
|
|
return [super buttonWithType:buttonType];
|
|
}
|
|
|
|
- (instancetype)init {
|
|
self = [super init];
|
|
if (self) {
|
|
[self init_ORKTextButton];
|
|
}
|
|
return self;
|
|
}
|
|
|
|
- (instancetype)initWithFrame:(CGRect)frame {
|
|
self = [super initWithFrame:frame];
|
|
if (self) {
|
|
[self init_ORKTextButton];
|
|
}
|
|
return self;
|
|
}
|
|
|
|
- (void)init_ORKTextButton {
|
|
[[NSNotificationCenter defaultCenter] addObserver:self
|
|
selector:@selector(updateAppearance)
|
|
name:UIContentSizeCategoryDidChangeNotification
|
|
object:nil];
|
|
|
|
[self updateAppearance];
|
|
[self tintColorDidChange];
|
|
}
|
|
|
|
- (void)tintColorDidChange {
|
|
[super tintColorDidChange];
|
|
|
|
[self setTitleColor:[self tintColor] forState:UIControlStateNormal];
|
|
[self setTitleColor:[[self tintColor] colorWithAlphaComponent:0.7] forState:UIControlStateHighlighted];
|
|
}
|
|
|
|
- (void)updateAppearance {
|
|
|
|
self.titleLabel.font = [[self class] defaultFont];
|
|
[self invalidateIntrinsicContentSize];
|
|
|
|
}
|
|
|
|
- (void)dealloc {
|
|
[[NSNotificationCenter defaultCenter] removeObserver:self];
|
|
}
|
|
|
|
+ (UIFont *)defaultFont {
|
|
// regular, 14
|
|
UIFontDescriptor *descriptor = [UIFontDescriptor preferredFontDescriptorWithTextStyle:UIFontTextStyleCaption1];
|
|
return [UIFont systemFontOfSize:((NSNumber *)[descriptor objectForKey: UIFontDescriptorSizeAttribute]).doubleValue + 2.0];
|
|
}
|
|
|
|
- (CGSize)intrinsicContentSize {
|
|
UILabel *label = nil;
|
|
|
|
for (UIView *view in self.subviews) {
|
|
if ([view isKindOfClass:[UILabel class]]) {
|
|
label = (UILabel *)view;
|
|
break;
|
|
}
|
|
}
|
|
|
|
// This is to avoid calling self.titleLabel when recalculation of content size is not needed.
|
|
// Calling self.titleLabel at here can cause weird layout error.
|
|
if (label && label.preferredMaxLayoutWidth > 0 && self.currentTitle.length > 0) {
|
|
CGSize labelSize = [self.titleLabel sizeThatFits:CGSizeMake(self.titleLabel.preferredMaxLayoutWidth, CGFLOAT_MAX)];
|
|
|
|
CGFloat verticalPadding = MAX(self.contentEdgeInsets.top, self.titleEdgeInsets.top) + MAX(self.contentEdgeInsets.bottom, self.titleEdgeInsets.bottom);
|
|
CGFloat horizontalPadding = MAX(self.contentEdgeInsets.left, self.titleEdgeInsets.left) + MAX(self.contentEdgeInsets.right, self.titleEdgeInsets.right);
|
|
|
|
return CGSizeMake(labelSize.width+horizontalPadding,
|
|
labelSize.height+verticalPadding);
|
|
}
|
|
return [super intrinsicContentSize];
|
|
}
|
|
|
|
- (UIAccessibilityTraits)accessibilityTraits {
|
|
// prevent VoiceOver from speaking "dimmed" when transitioning between pages
|
|
if (self.isInTransition) {
|
|
return [super accessibilityTraits] & ~UIAccessibilityTraitNotEnabled;
|
|
}
|
|
return [super accessibilityTraits];
|
|
}
|
|
|
|
@end
|