root/WiredClient/trunk/WCAboutWindow.m

/* $Id$ */

/*
 *  Copyright (c) 2003-2007 Axel Andersson
 *  All rights reserved.
 *
 *  Redistribution and use in source and binary forms, with or without
 *  modification, are permitted provided that the following conditions
 *  are met:
 *  1. Redistributions of source code must retain the above copyright
 *     notice, this list of conditions and the following disclaimer.
 *  2. Redistributions in binary form must reproduce the above copyright
 *     notice, this list of conditions and the following disclaimer in the
 *     documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */

#import "WCAboutWindow.h"

@implementation WCAboutWindow

+ (WCAboutWindow *)aboutWindow {
        static id       sharedAboutWindow;
        
        if(!sharedAboutWindow)
                sharedAboutWindow = [[self alloc] init];

        return sharedAboutWindow;
}



- (id)init {
        NSMutableAttributedString       *leftString, *rightString;
        NSDictionary                            *attributes;
        NSView                                          *view;
        NSImage                                         *leftImage, *rightImage;
        NSEnumerator                            *enumerator;
        NSScreen                                        *screen, *last = NULL;
        NSRect                                          viewRect, leftRect, rightRect;
        CGFloat                                         width = 0, height;

        enumerator = [[NSScreen screens] objectEnumerator];

        while((screen = [enumerator nextObject])) {
                if(!last) {
                    // --- add first screen
                    width += [screen frame].size.width;
                } else {
                    if(NSEqualSizes([screen frame].size, [last frame].size) &&
                       [screen frame].origin.y == [last frame].origin.y) {
                        // --- add another screen of equal size and along the same boundary
                        width += [screen frame].size.width;
                    }
                }

                last = screen;
        }

        // --- set window size
        height = width / 11.0;
        viewRect = [[NSScreen mainScreen] frame];
        viewRect.origin.x = 0;
        viewRect.origin.y = (viewRect.size.height - height) / 2;
        viewRect.size.height = height;
        viewRect.size.width = width;

        // --- create window
        self = [super initWithContentRect:viewRect
                                    styleMask:NSBorderlessWindowMask
                                      backing:NSBackingStoreBuffered
                                        defer:NO];

        viewRect.origin.x = viewRect.origin.y = 0;
        view = [[NSView alloc] initWithFrame:viewRect];

        [self setDelegate:self];
        [self setReleasedWhenClosed:NO];
        [self setBackgroundColor:[NSColor clearColor]];
        [self setOpaque:NO];
        [self setLevel:NSScreenSaverWindowLevel];
        [self setContentView:view];

        // --- create strings
        attributes = [NSDictionary dictionaryWithObjectsAndKeys:
                [NSFont fontWithName:@"Helvetica-Bold" size:width / 14.60], NSFontAttributeName,
                [NSColor blackColor], NSForegroundColorAttributeName,
                NULL];

        leftString = [NSMutableAttributedString attributedStringWithString:@"Close the world," attributes:attributes];
        rightString = [NSMutableAttributedString attributedStringWithString:@"Open the nExt" attributes:attributes];

        // --- red 'E'
        [rightString addAttribute:NSForegroundColorAttributeName
                                value:[[NSColor redColor] shadowWithLevel:0.5]
                                range:[[rightString string] rangeOfString:@"E"]];

        // --- create images
        leftRect = NSMakeRect(0, 0, viewRect.size.width * 0.53, viewRect.size.height);
        leftImage = [[[NSImage alloc] initWithSize:leftRect.size] autorelease];
        rightRect = NSMakeRect(leftRect.size.width, 0, viewRect.size.width - leftRect.size.width, viewRect.size.height);
        rightImage = [[[NSImage alloc] initWithSize:rightRect.size] autorelease];

        // --- draw strings in images
        [leftImage lockFocus];
        [leftString drawInRect:leftRect];
        [leftImage unlockFocus];

        [rightImage lockFocus];
        [rightString drawInRect:leftRect];
        [rightImage unlockFocus];

        // --- display window
        [self display];

        // --- draw images in view
        [view lockFocus];
        [leftImage compositeToPoint:leftRect.origin operation:NSCompositeSourceOver];
        [[rightImage mirroredImage] compositeToPoint:rightRect.origin operation:NSCompositeSourceOver];
        [view unlockFocus];

        // --- subscribe to these
        [[NSNotificationCenter defaultCenter]
                addObserver:self
                   selector:@selector(applicationDidChangeActive:)
                           name:WIApplicationDidChangeActiveNotification];

        return self;
}



- (void)applicationDidChangeActive:(NSNotification *)notification {
        [self close];
}



- (void)windowDidResignKey:(NSNotification *)notification {
        [self close];
}



- (void)keyDown:(NSEvent *)event {
        [self close];
}



- (void)mouseDown:(NSEvent *)event {
        [self close];
}



- (BOOL)canBecomeKeyWindow {
        return YES;
}

@end