140 lines
2.9 KiB
Objective-C
140 lines
2.9 KiB
Objective-C
// 14 august 2015
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#import "uipriv_darwin.h"
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// Horizontal sliders have no intrinsic width; we'll use the default Interface Builder width for them.
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// This will also be used for the initial frame size, to ensure the slider is always horizontal (see below).
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#define sliderWidth 92
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@interface libui_intrinsicWidthNSSlider : NSSlider
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@end
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@implementation libui_intrinsicWidthNSSlider
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- (NSSize)intrinsicContentSize
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{
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NSSize s;
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s = [super intrinsicContentSize];
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s.width = sliderWidth;
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return s;
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}
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@end
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struct uiSlider {
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uiDarwinControl c;
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NSSlider *slider;
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void (*onChanged)(uiSlider *, void *);
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void *onChangedData;
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};
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@interface sliderDelegateClass : NSObject {
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struct mapTable *sliders;
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}
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- (IBAction)onChanged:(id)sender;
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- (void)registerSlider:(uiSlider *)b;
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- (void)unregisterSlider:(uiSlider *)b;
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@end
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@implementation sliderDelegateClass
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- (id)init
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{
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self = [super init];
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if (self)
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self->sliders = newMap();
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return self;
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}
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- (void)dealloc
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{
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mapDestroy(self->sliders);
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[super dealloc];
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}
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- (IBAction)onChanged:(id)sender
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{
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uiSlider *s;
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s = (uiSlider *) mapGet(self->sliders, sender);
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(*(s->onChanged))(s, s->onChangedData);
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}
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- (void)registerSlider:(uiSlider *)s
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{
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mapSet(self->sliders, s->slider, s);
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[s->slider setTarget:self];
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[s->slider setAction:@selector(onChanged:)];
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}
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- (void)unregisterSlider:(uiSlider *)s
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{
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[s->slider setTarget:nil];
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mapDelete(self->sliders, s->slider);
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}
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@end
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static sliderDelegateClass *sliderDelegate = nil;
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uiDarwinDefineControlWithOnDestroy(
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uiSlider, // type name
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uiSliderType, // type function
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slider, // handle
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[sliderDelegate unregisterSlider:this]; // on destroy
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)
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intmax_t uiSliderValue(uiSlider *s)
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{
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// NSInteger is the most similar to intmax_t
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return [s->slider integerValue];
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}
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void uiSliderSetValue(uiSlider *s, intmax_t value)
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{
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[s->slider setIntegerValue:value];
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}
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void uiSliderOnChanged(uiSlider *s, void (*f)(uiSlider *, void *), void *data)
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{
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s->onChanged = f;
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s->onChangedData = data;
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}
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static void defaultOnChanged(uiSlider *s, void *data)
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{
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// do nothing
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}
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uiSlider *uiNewSlider(intmax_t min, intmax_t max)
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{
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uiSlider *s;
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NSSliderCell *cell;
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s = (uiSlider *) uiNewControl(uiSliderType());
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// a horizontal slider is defined as one where the width > height, not by a flag
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// to be safe, don't use NSZeroRect, but make it horizontal from the get-go
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s->slider = [[libui_intrinsicWidthNSSlider alloc]
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initWithFrame:NSMakeRect(0, 0, sliderWidth, 2)];
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[s->slider setMinValue:min];
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[s->slider setMaxValue:max];
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[s->slider setAllowsTickMarkValuesOnly:NO];
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[s->slider setNumberOfTickMarks:0];
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[s->slider setTickMarkPosition:NSTickMarkAbove];
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cell = (NSSliderCell *) [s->slider cell];
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[cell setSliderType:NSLinearSlider];
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if (sliderDelegate == nil) {
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sliderDelegate = [sliderDelegateClass new];
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[delegates addObject:sliderDelegate];
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}
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[sliderDelegate registerSlider:s];
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uiSliderOnChanged(s, defaultOnChanged, NULL);
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uiDarwinFinishNewControl(s, uiSlider);
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return s;
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}
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