LoupeWindow.m

/*=========================================================================
 Program:   OsiriX
 
 Copyright (c) OsiriX Team
 All rights reserved.
 Distributed under GNU - GPL
 
 See http://www.osirix-viewer.com/copyright.html for details.
 
 This software is distributed WITHOUT ANY WARRANTY; without even
 the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
 PURPOSE.
 =========================================================================*/

#import "LoupeWindow.h"
#import <AppKit/AppKit.h>

@implementation LoupeWindow

- (id)initWithContentRect:(NSRect)contentRect styleMask:(NSUInteger)aStyle backing:(NSBackingStoreType)bufferingType defer:(BOOL)flag
{	
    //Call NSWindow's version of this function, but pass in the all-important value of NSBorderlessWindowMask
    //for the styleMask so that the window doesn't have a title bar
    self = [super initWithContentRect:contentRect styleMask:NSBorderlessWindowMask backing:NSBackingStoreBuffered defer:NO];
    //Set the background color to clear so that (along with the setOpaque call below) we can see through the parts
    //of the window that we're not drawing into
    [self setBackgroundColor:[NSColor clearColor]];
    //This next line pulls the window up to the front on top of other system windows.  This is how the Clock app behaves;
    //generally you wouldn't do this for windows unless you really wanted them to float above everything.
    [self setLevel:NSNormalWindowLevel];
    //Let's start with no transparency for all drawing into the window
    [self setAlphaValue:1.0];
    //but let's turn off opaqueness so that we can see through the parts of the window that we're not drawing into
    [self setOpaque:NO];
    //and while we're at it, make sure the window has a shadow, which will automatically be the shape of our custom content.
    [self setHasShadow:YES];
    return self;
}

- (BOOL)canBecomeKeyWindow
{
    return NO;
}

- (BOOL)canBecomeMainWindow
{
    return NO;
}

- (BOOL)acceptsMouseMovedEvents
{
    return NO;
}

- (BOOL)acceptsFirstResponder
{
    return NO;
}

- (BOOL)ignoresMouseEvents
{
    return YES;
}

@end