Classes/CustomView.m
/* |
File: CustomView.m |
Abstract: Subclass of NSView which handles the drawing of the window content. |
Circle and pentagon graphics are used, switching between the two depending upon the window's |
level of transparency. |
Version: 1.5 |
Disclaimer: IMPORTANT: This Apple software is supplied to you by Apple |
Inc. ("Apple") in consideration of your agreement to the following |
terms, and your use, installation, modification or redistribution of |
this Apple software constitutes acceptance of these terms. If you do |
not agree with these terms, please do not use, install, modify or |
redistribute this Apple software. |
In consideration of your agreement to abide by the following terms, and |
subject to these terms, Apple grants you a personal, non-exclusive |
license, under Apple's copyrights in this original Apple software (the |
"Apple Software"), to use, reproduce, modify and redistribute the Apple |
Software, with or without modifications, in source and/or binary forms; |
provided that if you redistribute the Apple Software in its entirety and |
without modifications, you must retain this notice and the following |
text and disclaimers in all such redistributions of the Apple Software. |
Neither the name, trademarks, service marks or logos of Apple Inc. may |
be used to endorse or promote products derived from the Apple Software |
without specific prior written permission from Apple. Except as |
expressly stated in this notice, no other rights or licenses, express or |
implied, are granted by Apple herein, including but not limited to any |
patent rights that may be infringed by your derivative works or by other |
works in which the Apple Software may be incorporated. |
The Apple Software is provided by Apple on an "AS IS" basis. APPLE |
MAKES NO WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION |
THE IMPLIED WARRANTIES OF NON-INFRINGEMENT, MERCHANTABILITY AND FITNESS |
FOR A PARTICULAR PURPOSE, REGARDING THE APPLE SOFTWARE OR ITS USE AND |
OPERATION ALONE OR IN COMBINATION WITH YOUR PRODUCTS. |
IN NO EVENT SHALL APPLE BE LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL |
OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
INTERRUPTION) ARISING IN ANY WAY OUT OF THE USE, REPRODUCTION, |
MODIFICATION AND/OR DISTRIBUTION OF THE APPLE SOFTWARE, HOWEVER CAUSED |
AND WHETHER UNDER THEORY OF CONTRACT, TORT (INCLUDING NEGLIGENCE), |
STRICT LIABILITY OR OTHERWISE, EVEN IF APPLE HAS BEEN ADVISED OF THE |
POSSIBILITY OF SUCH DAMAGE. |
Copyright (C) 2013 Apple Inc. All Rights Reserved. |
*/ |
#import "CustomView.h" |
@implementation CustomView |
@synthesize circleImage; |
@synthesize pentagonImage; |
@synthesize showingPentagon; |
/* |
This routine is called at app launch time when this class is unpacked from the nib. |
*/ |
- (void)awakeFromNib { |
// Load the images from the bundle's Resources directory |
self.circleImage = [NSImage imageNamed:@"circle"]; |
self.pentagonImage = [NSImage imageNamed:@"pentagon"]; |
} |
- (void)dealloc { |
[circleImage release]; |
[pentagonImage release]; |
[super dealloc]; |
} |
/* |
When it's time to draw, this routine is called. This view is inside the window, the window's |
opaqueness has been turned off, and the window's styleMask has been set to NSBorderlessWindowMask |
on creation, so this view draws the all the visible content. The first two lines below fill the view |
with "clear" color, so that any images drawn also define the custom shape of the window. |
Furthermore, if the window's alphaValue is less than 1.0, drawing will use transparency. |
*/ |
- (void)drawRect:(NSRect)rect { |
// Clear the drawing rect. |
[[NSColor clearColor] set]; |
NSRectFill([self frame]); |
// A boolean tracks the previous shape of the window. If the shape changes, it's necessary for the |
// window to recalculate its shape and shadow. |
BOOL shouldDisplayWindow = NO; |
// If the window transparency is > 0.7, draw the circle, otherwise, draw the pentagon. |
if ([[self window] alphaValue] > 0.7) { |
shouldDisplayWindow = (showingPentagon == YES); |
showingPentagon = NO; |
[circleImage drawAtPoint:NSZeroPoint fromRect:NSZeroRect operation:NSCompositeSourceOver fraction:1.0]; |
} else { |
shouldDisplayWindow = (showingPentagon == NO); |
showingPentagon = YES; |
[pentagonImage drawAtPoint:NSZeroPoint fromRect:NSZeroRect operation:NSCompositeSourceOver fraction:1.0]; |
} |
// Reset the window shape and shadow. |
if (shouldDisplayWindow) { |
[[self window] display]; |
[[self window] setHasShadow:NO]; |
[[self window] setHasShadow:YES]; |
} |
} |
@end |
Copyright © 2013 Apple Inc. All Rights Reserved. Terms of Use | Privacy Policy | Updated: 2013-05-08