On Jan 3, 2011, at 8:42 AM, Brad Stone wrote:
> I don't think the Quick Look documentation is as robust as it can be, I'm
> still trying to figure out how to do the same thing the right way.
Roughly:
@interface MyView : NSView <QLPreviewPanelDataSource, QLPreviewPanelDelegate> {
QLPreviewPanel * mQLPreviewPanel;
}
- (IBAction)toggleQuickLook:(id)sender;
{
if ([QLPreviewPanel sharedPreviewPanelExists] && [[QLPreviewPanel
sharedPreviewPanel] isVisible]) {
[[QLPreviewPanel sharedPreviewPanel] orderOut:nil];
} else {
[[QLPreviewPanel sharedPreviewPanel] makeKeyAndOrderFront:nil];
}
}
// Quick Look panel support
// ------------------------------------
- (BOOL)acceptsPreviewPanelControl:(QLPreviewPanel *)panel;
{
return YES;
}
- (void)beginPreviewPanelControl:(QLPreviewPanel *)panel;
{
// This view is now responsible of the preview panel
// It is allowed to set the delegate, data source and refresh panel.
mQLPreviewPanel = [panel retain];
panel.delegate = self;
panel.dataSource = self;
}
- (void)endPreviewPanelControl:(QLPreviewPanel *)panel;
{
// This document loses its responsisibility on the preview panel
// Until the next call to -beginPreviewPanelControl: it must not
// change the panel's delegate, data source or refresh it.
[mQLPreviewPanel release];
mQLPreviewPanel = nil;
}
// Quick Look panel data source
// ------------------------------------
- (NSInteger)numberOfPreviewItemsInPreviewPanel:(QLPreviewPanel *)panel;
{
return [self.controller.selectedItems count];
}
- (id <QLPreviewItem>)previewPanel:(QLPreviewPanel *)panel
previewItemAtIndex:(NSInteger)index;
{
return [self.controller.selectedItems objectAtIndex:index];
}
// Quick Look panel delegate
// ------------------------------------
//- (BOOL)previewPanel:(QLPreviewPanel *)panel handleEvent:(NSEvent *)event
//{
// // redirect all key down events to the view
// if ([event type] == NSKeyDown) {
// [self keyDown:event];
// return YES;
// }
// return NO;
//}
// This delegate method provides the rect on screen from which the panel will
zoom.
- (NSRect)previewPanel:(QLPreviewPanel *)panel
sourceFrameOnScreenForPreviewItem:(id <QLPreviewItem>)item;
{
NSRect boundsInView = ...;
NSRect boundsOnScreen = [self convertRectToBase:boundsInView];
boundsOnScreen.origin = [[self window]
convertBaseToScreen:boundsOnScreen.origin];
return boundsOnScreen;
}
// This delegate method provides a transition image between the table view and
the preview panel
- (id)previewPanel:(QLPreviewPanel *)panel transitionImageForPreviewItem:(id
<QLPreviewItem>)item contentRect:(NSRect *)contentRect
{
return [self.controller imageForItems:[NSArray arrayWithObject:item]];
}
--
Seth Willits
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