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slider value reset gesture #4

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slider value reset gesture #4

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2be2c63
added double-tap on individual slider: resets that slider to its defa…
Apr 17, 2014
640d04c
added macros for single source of truth for default slider values
Apr 17, 2014
05087e9
fixed warning
Apr 17, 2014
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30 changes: 24 additions & 6 deletions Transformifier/Transformifier.m
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Original file line number Diff line number Diff line change
Expand Up @@ -36,6 +36,9 @@ a copy of this software and associated documentation files (the
transformTypePerspective= 5
} enumTransformType;

#define kSliderDefaultValue_Scale 100.0
#define kSliderDefaultValue_Other 0.0

@interface Transformifier()

@property (nonatomic, strong) CALayer *layer;
Expand Down Expand Up @@ -92,11 +95,11 @@ - (void)loadView {

- (void)reload {
NSNumber *zeroInt = [NSNumber numberWithInt:0];
NSMutableDictionary *rotate = [NSMutableDictionary dictionaryWithDictionary:@{@"type" : [NSNumber numberWithInt:transformTypeRotate], @"axisIndex" : zeroInt, @"value" : [NSNumber numberWithFloat: 0.0] }];
NSMutableDictionary *translate = [NSMutableDictionary dictionaryWithDictionary:@{@"type" : [NSNumber numberWithInt:transformTypeTranslate], @"axisIndex" : zeroInt, @"value" : [NSNumber numberWithFloat: 0.0] }];
NSMutableDictionary *scale = [NSMutableDictionary dictionaryWithDictionary:@{@"type" : [NSNumber numberWithInt:transformTypeScale], @"axisIndex" : zeroInt, @"value" : [NSNumber numberWithFloat:100.0] }];
NSMutableDictionary *skew = [NSMutableDictionary dictionaryWithDictionary:@{@"type" : [NSNumber numberWithInt:transformTypeSkew], @"axisIndex" : zeroInt, @"value" : [NSNumber numberWithFloat: 0.0] }];
NSMutableDictionary *perspective = [NSMutableDictionary dictionaryWithDictionary:@{@"type" : [NSNumber numberWithInt:transformTypePerspective],@"axisIndex" : zeroInt, @"value" : [NSNumber numberWithFloat: 0.0] }];
NSMutableDictionary *rotate = [NSMutableDictionary dictionaryWithDictionary:@{@"type" : [NSNumber numberWithInt:transformTypeRotate], @"axisIndex" : zeroInt, @"value" : [NSNumber numberWithFloat: kSliderDefaultValue_Other] }];
NSMutableDictionary *translate = [NSMutableDictionary dictionaryWithDictionary:@{@"type" : [NSNumber numberWithInt:transformTypeTranslate], @"axisIndex" : zeroInt, @"value" : [NSNumber numberWithFloat: kSliderDefaultValue_Other] }];
NSMutableDictionary *scale = [NSMutableDictionary dictionaryWithDictionary:@{@"type" : [NSNumber numberWithInt:transformTypeScale], @"axisIndex" : zeroInt, @"value" : [NSNumber numberWithFloat:kSliderDefaultValue_Scale] }];
NSMutableDictionary *skew = [NSMutableDictionary dictionaryWithDictionary:@{@"type" : [NSNumber numberWithInt:transformTypeSkew], @"axisIndex" : zeroInt, @"value" : [NSNumber numberWithFloat: kSliderDefaultValue_Other] }];
NSMutableDictionary *perspective = [NSMutableDictionary dictionaryWithDictionary:@{@"type" : [NSNumber numberWithInt:transformTypePerspective],@"axisIndex" : zeroInt, @"value" : [NSNumber numberWithFloat: kSliderDefaultValue_Other] }];

self.transformsArray = [NSMutableArray arrayWithArray:@[ rotate, translate, scale ]];
self.sourceArray = [NSMutableArray arrayWithArray:@[ skew, perspective, rotate, translate, scale ]];
Expand Down Expand Up @@ -319,6 +322,10 @@ - (id)initWithStyle:(UITableViewCellStyle)style reuseIdentifier:(NSString *)reus
self.slider = [[UISlider alloc] initWithFrame:CGRectMake(10, 35, 200, 20)];
[self.contentView addSubview:slider];

UITapGestureRecognizer *doubleTap = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(resetSlider:)];
doubleTap.numberOfTapsRequired = 2;
[slider addGestureRecognizer:doubleTap];

[axisChooser addTarget:self action:@selector(setAxisIndex) forControlEvents:UIControlEventValueChanged];
[slider addTarget:self action:@selector(setValueLabel) forControlEvents:UIControlEventValueChanged];
}
Expand Down Expand Up @@ -380,7 +387,7 @@ - (void)setEnabled:(BOOL)value {
}

- (void)setAxisIndex {
[transformData setValue:[NSNumber numberWithInt:axisChooser.selectedSegmentIndex] forKey:@"axisIndex"];
[transformData setValue:[NSNumber numberWithInt:(int)axisChooser.selectedSegmentIndex] forKey:@"axisIndex"];
[delegate applyTransform];
}

Expand All @@ -400,6 +407,17 @@ - (void)setValueLabel {
[delegate applyTransform];
}

- (void)resetSlider:(UITapGestureRecognizer *)sender
{
if (transformType == transformTypeScale) {
slider.value = kSliderDefaultValue_Scale;
} else {
slider.value = kSliderDefaultValue_Other;
}

[self setValueLabel];
}


@end