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//
// UKBorderlessWindow.m
// Filie
//
// Created by Uli Kusterer on Fri Dec 19 2003.
// Copyright (c) 2003 Uli Kusterer.
//
// This software is provided 'as-is', without any express or implied
// warranty. In no event will the authors be held liable for any damages
// arising from the use of this software.
//
// Permission is granted to anyone to use this software for any purpose,
// including commercial applications, and to alter it and redistribute it
// freely, subject to the following restrictions:
//
// 1. The origin of this software must not be misrepresented; you must not
// claim that you wrote the original software. If you use this software
// in a product, an acknowledgment in the product documentation would be
// appreciated but is not required.
//
// 2. Altered source versions must be plainly marked as such, and must not be
// misrepresented as being the original software.
//
// 3. This notice may not be removed or altered from any source
// distribution.
//

#import "UKBorderlessWindow.h"
#import "NSScreen+ScreenAtPoint.h"


@implementation UKBorderlessWindow

// Designated Initializer:
-(id) initWithContentRect: (NSRect)box styleMask: (NSUInteger)sty backing: (NSBackingStoreType)bs defer: (BOOL)def
{
// Remove all "border" attributes. We don't touch the other attributes so we can still have this
// work on non-activating panels (NSNonactivatingPanelMask is a style, too).
sty &= ~(NSTitledWindowMask | NSClosableWindowMask | NSMiniaturizableWindowMask | NSResizableWindowMask);

self = [super initWithContentRect:box styleMask: sty backing:bs defer: def];

if( self != nil )
{
constrainRect = NO;
canBeClosed = NO;
canBeMinimized = NO;
canBeZoomed = NO;
canBecomeMainWindow = YES;
canBecomeKeyWindow = YES;
}

return self;
}


// Convenience initializer:
-(id) initWithContentRect: (NSRect)box backing: (NSBackingStoreType)bs defer: (BOOL)def
{
return [self initWithContentRect: box styleMask: NSBorderlessWindowMask backing: bs defer: def];
}

-(void) setCanBecomeKeyWindow: (BOOL)n
{
canBecomeKeyWindow = n;
}

-(BOOL) canBecomeKeyWindow
{
    return canBecomeKeyWindow;
}


-(void) setCanBecomeMainWindow: (BOOL)n
{
canBecomeMainWindow = n;
}

-(BOOL) canBecomeMainWindow
{
    return canBecomeMainWindow;
}

// Make sure our borderless window may even cover the menu bar if we desire so.
-(NSRect) constrainFrameRect:(NSRect)frameRect toScreen:(NSScreen *)screen
{
if( !constrainRect )
{
//UKLog(@"UKBorderlessWindow NOT constraining rect.");
return frameRect;
}
else
{
if( !screen )
screen = [self screen];
if( !screen )
screen = [NSScreen screenAtPoint: frameRect.origin];
if( !screen )
screen = [NSScreen mainScreen];

NSRect wdBox = frameRect;
NSRect scBox = [screen frame];
NSRect commonBox = NSIntersectionRect( wdBox, scBox );

if( commonBox.size.width < wdBox.size.width )
{
float hOffset = (scBox.origin.x +scBox.size.width) -(wdBox.origin.x +wdBox.size.width);

if( commonBox.origin.x > wdBox.origin.x )
wdBox.origin.x = commonBox.origin.x;
else if( hOffset < 0 )
wdBox.origin.x += hOffset;
}

if( commonBox.size.height < wdBox.size.height )
{
float vOffset = (scBox.origin.y +scBox.size.height) -(wdBox.origin.y +wdBox.size.height);
if( commonBox.origin.y > wdBox.origin.y )
wdBox.origin.y = commonBox.origin.y;
else if( vOffset < 0 )
wdBox.origin.y += vOffset;
}

//UKLog(@"UKBorderlessWindow constraining rect %@ to %@ on screen %@ with rect %@.", NSStringFromRect(frameRect), NSStringFromRect(wdBox), screen, NSStringFromRect(scBox));

return wdBox;
}
}


-(BOOL) constrainRect
{
    return constrainRect;
}

-(void) setConstrainRect: (BOOL)newConstrainRect
{
constrainRect = newConstrainRect;
}


-(BOOL) canBeClosed
{
    return canBeClosed;
}

-(void) setCanBeClosed: (BOOL)newCanBeClosed
{
canBeClosed = newCanBeClosed;
}

-(BOOL) canBeMinimized
{
    return canBeMinimized;
}

-(void) setCanBeMinimized: (BOOL)newCanBeMinimized
{
canBeMinimized = newCanBeMinimized;
}

-(BOOL) canBeZoomed
{
    return canBeZoomed;
}

-(void) setCanBeZoomed: (BOOL)newCanBeZoomed
{
canBeZoomed = newCanBeZoomed;
}

-(void) setHideWhenNotKey: (BOOL)n
{
hideWhenNotKey = n;
}

-(BOOL) hideWhenNotKey
{
return hideWhenNotKey;
}


-(BOOL) validateMenuItem: (NSMenuItem*)sender
{
if( [sender action] == @selector(performClose:) )
return canBeClosed;
else if( [sender action] == @selector(performMiniaturize:) )
return canBeMinimized;
else if( [sender action] == @selector(performZoom:) )
return canBeZoomed;
else
return [super validateMenuItem: sender];
}


-(void) performClose:(id)sender
{
[[self windowController] close];
}


- (void)resignKeyWindow
{
if( hideWhenNotKey )
{
hideWhenNotKey = NO; // Prevent recursion from our orderOut call.
[self orderOutIndependentOfParent: self];
hideWhenNotKey = YES;
}
}


-(IBAction) orderOutIndependentOfParent: (id)sender
{
NSWindow* parentWin = [self parentWindow];
if( parentWin )
[parentWin removeChildWindow: self]; // Otherwise we'll hide the parent window along with us.
[self orderOut: nil];
if( parentWin )
[parentWin makeKeyAndOrderFront: self];
}


@end
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