bsnes/hiro/cocoa/widget/horizontal-scroll-bar.cpp

95 lines
2.1 KiB
C++

#if defined(Hiro_HorizontalScrollBar)
@implementation CocoaHorizontalScrollBar : NSScroller
-(id) initWith:(hiro::mHorizontalScrollBar&)horizontalScrollBarReference {
if(self = [super initWithFrame:NSMakeRect(0, 0, 1, 0)]) {
horizontalScrollBar = &horizontalScrollBarReference;
[self setTarget:self];
[self setAction:@selector(scroll:)];
[self setControlSize:NSRegularControlSize];
[self setScrollerStyle:NSScrollerStyleLegacy];
[self setEnabled:YES];
[self update];
}
return self;
}
-(void) update {
double d = 1.0 / horizontalScrollBar->state.length;
double f = d * horizontalScrollBar->state.position;
[self setDoubleValue:f];
[self setKnobProportion:d];
}
-(IBAction) scroll:(id)sender {
auto& state = horizontalScrollBar->state;
switch([self hitPart]) {
case NSScrollerIncrementLine:
case NSScrollerIncrementPage:
if(state.position < state.length - 1) state.position++;
[self update];
break;
case NSScrollerDecrementLine:
case NSScrollerDecrementPage:
if(state.position) state.position--;
[self update];
break;
case NSScrollerKnob:
state.position = [self doubleValue] * state.length;
break;
}
horizontalScrollBar->doChange();
}
@end
namespace hiro {
auto pHorizontalScrollBar::construct() -> void {
@autoreleasepool {
cocoaView = cocoaHorizontalScrollBar = [[CocoaHorizontalScrollBar alloc] initWith:self()];
pWidget::construct();
setLength(state().length);
setPosition(state().position);
}
}
auto pHorizontalScrollBar::destruct() -> void {
@autoreleasepool {
[cocoaView removeFromSuperview];
[cocoaView release];
}
}
auto pHorizontalScrollBar::minimumSize() const -> Size {
@autoreleasepool {
return {32, (int)[NSScroller scrollerWidthForControlSize:NSRegularControlSize scrollerStyle:NSScrollerStyleLegacy]};
}
}
auto pHorizontalScrollBar::setLength(uint length) -> void {
@autoreleasepool {
[cocoaView update];
}
}
auto pHorizontalScrollBar::setPosition(uint position) -> void {
@autoreleasepool {
[cocoaView update];
}
}
}
#endif