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Diffstat (limited to 'warningpopover_darwin.m')
| -rw-r--r-- | warningpopover_darwin.m | 157 |
1 files changed, 157 insertions, 0 deletions
diff --git a/warningpopover_darwin.m b/warningpopover_darwin.m new file mode 100644 index 0000000..50c9118 --- /dev/null +++ b/warningpopover_darwin.m @@ -0,0 +1,157 @@ +// 26 august 2014 + +#include "objc_darwin.h" +#include <Cocoa/Cocoa.h> + +// We would be able to just use plain old NSPopover here, but alas that steals focus. +// NSPopovers are intended for interactive content, and Apple seems to be diligent in enforcing this rule, as the known techniques for preventing a NSPopover from stealing focus no longer work in 10.9. +// Let's just fake it with a window. + +@interface goWarningPopover : NSWindow { +@public + id onBegin; + id onEnd; + id textfield; + NSTextView *tv; +} +@end + +@implementation goWarningPopover + +- (id)init +{ + self = [super initWithContentRect:NSZeroRect + styleMask:NSBorderlessWindowMask + backing:NSBackingStoreBuffered + defer:YES]; + [self setOpaque:NO]; + [self setHasShadow:YES]; + [self setExcludedFromWindowsMenu:YES]; + [self setMovableByWindowBackground:NO]; + [self setLevel:NSPopUpMenuWindowLevel]; + [self setHidesOnDeactivate:YES]; + self->onBegin = nil; + self->onEnd = nil; + return self; +} + +- (void)close +{ + if (self->onBegin != nil) { + [[NSNotificationCenter defaultCenter] removeObserver:self->onBegin]; + self->onBegin = nil; + } + if (self->onEnd != nil) { + [[NSNotificationCenter defaultCenter] removeObserver:self->onEnd]; + self->onEnd = nil; + } + if (self->tv != nil) + [self->tv removeObserver:self forKeyPath:@"delegate"]; + [super close]; +} + +- (BOOL)canBecomeKeyWindow +{ + return NO; +} + +- (BOOL)canBecomeMainWindow +{ + return NO; +} + +- (void)observeValueForKeyPath:(NSString *)keyPath ofObject:(id)object change:(NSDictionary *)change context:(void *)context +{ + if ([self->tv delegate] == self->textfield) + [self orderFront:self]; + else + [self orderOut:self]; +} + +@end + +@interface goWarningView : NSView { +@public + NSImageView *icon; + NSTextField *label; +} +@end + +@implementation goWarningView + +- (void)sizeToFitAndArrange +{ + [self->label sizeToFit]; + + CGFloat labelheight, imageheight; + CGFloat targetwidth, imagewidth; + + labelheight = [self->label frame].size.height; + imageheight = [[self->icon image] size].height; + imagewidth = [[self->icon image] size].width; + targetwidth = (imagewidth * labelheight) / imageheight; + + [self->icon setFrameSize:NSMakeSize(targetwidth, labelheight)]; + + [self setFrameSize:NSMakeSize(targetwidth + [self->label frame].size.width, labelheight)]; + [self->icon setFrameOrigin:NSMakePoint(0, 0)]; + [self->label setFrameOrigin:NSMakePoint(targetwidth, 0)]; +} + +- (BOOL)acceptsFirstResponder +{ + return NO; +} + +@end + +id newWarningPopover(char *text) +{ + goWarningView *wv; + + wv = [[goWarningView alloc] initWithFrame:NSZeroRect]; + + wv->icon = [[NSImageView alloc] initWithFrame:NSZeroRect]; + [wv->icon setImage:[NSImage imageNamed:NSImageNameCaution]]; + [wv->icon setImageFrameStyle:NSImageFrameNone]; + [wv->icon setImageAlignment:NSImageAlignCenter]; + [wv->icon setImageScaling:NSImageScaleProportionallyUpOrDown]; + [wv->icon setEditable:NO]; + [wv->icon setAnimates:NO]; + [wv->icon setAllowsCutCopyPaste:NO]; + [wv->icon setRefusesFirstResponder:YES]; + + wv->label = (NSTextField *) newLabel(); + textfieldSetText((id) wv->label, text); + [wv->label setRefusesFirstResponder:YES]; + + [wv addSubview:wv->icon]; + [wv addSubview:wv->label]; + [wv sizeToFitAndArrange]; + + goWarningPopover *popover; + + popover = [[goWarningPopover alloc] init]; // explicitly use our initializer + [[popover contentView] addSubview:wv]; + [popover setContentSize:[wv frame].size]; + + return (id) popover; +} + +void warningPopoverShow(id popover, id control) +{ + goWarningPopover *p = (goWarningPopover *) popover; + NSView *v = (NSView *) control; + NSRect vr; + NSPoint vo; + + // note that the frame is a rect of the superview + vr = [[v superview] convertRect:[v frame] toView:nil]; + vo = [[v window] convertRectToScreen:vr].origin; + [p setFrameOrigin:NSMakePoint(vo.x, vo.y - [p frame].size.height)]; + p->textfield = control; + p->tv = (NSTextView *) [[v window] fieldEditor:NO forObject:nil]; + // thanks to http://stackoverflow.com/a/25562783/3408572 for suggesting KVO here + [p->tv addObserver:p forKeyPath:@"delegate" options:NSKeyValueObservingOptionNew context:NULL]; + [p orderFront:p]; +} |