Bodega Awning Window

AwningWindow.m

//
//  AwningWindow.m
//  Bodega
//
//  Created by Rick Fillion on 14/04/09.
//  Copyright 2009 Centrix.ca. All rights reserved.
//

#import "AwningWindow.h"
#import "NSNotificationCenter+Bodega.h"
#include <tgmath.h>

@interface AwningWindow (Private)

- (NSEvent *)convertMouseEventToParentWindowEvent:(NSEvent *)event;

@end

@implementation AwningWindow

- (id) initWithContentRect:(NSRect)contentRect styleMask:(NSUInteger)windowStyle backing:(NSBackingStoreType)bufferingType defer:(BOOL)deferCreation
{
    self = [super initWithContentRect:contentRect styleMask:NSBorderlessWindowMask  backing:NSBackingStoreBuffered defer:FALSE];
    if (!self) { return nil; }

    awningLeft = [[NSImage imageNamed:@"AwningLeft"] retain];
    awningRight = [[NSImage imageNamed:@"AwningRight"] retain];
    awningSlice = [[NSImage imageNamed:@"AwningSlice"] retain];
    [self setBackgroundColor: [self sizedBackground]];

    return self;
}

- (void)dealloc
{
    [awningLeft release];
    [awningRight release];
    [awningSlice release];
    [super dealloc];
}

- (NSColor *)sizedBackground
{
    NSSize windowSize = [self frame].size;
    NSSize adjustedWindowSize = windowSize;
    adjustedWindowSize.width += 100.0;  // we add a bunch of whitespace here so that in Snow Leopard it doesn't show the wrap-around.
    NSImage *awningCompositeImage = [[[NSImage alloc] initWithSize:adjustedWindowSize] autorelease];
    CGFloat sideSlices = 16;

    
    CGFloat leftRightWidth = [awningLeft size].width + [awningRight size].width;
    CGFloat remainingWidth = roundf(windowSize.width - leftRightWidth);
    
    NSInteger sliceCount = ((NSInteger)remainingWidth) / ((NSInteger)[awningSlice size].width);
    remainingWidth -= roundf(sliceCount * [awningSlice size].width);
    CGFloat leftWidth = roundf([awningLeft size].width + (sideSlices / (sideSlices*2 + sliceCount)) * remainingWidth);
    CGFloat rightWidth = roundf([awningRight size].width + (sideSlices / (sideSlices*2 + sliceCount)) * remainingWidth);
    
    NSImage *slicesImage = nil;
    if (sliceCount * [awningSlice size].width > 0)
    {
        slicesImage = [[[NSImage alloc] initWithSize:NSMakeSize(sliceCount * [awningSlice size].width, [awningSlice size].height)] autorelease];
        NSRect sliceRect = NSMakeRect(0, 0, [awningSlice size].width, [awningSlice size].height);
        [slicesImage lockFocus];
        for (NSInteger count = 0; count < sliceCount; count++)
        {
            [awningSlice drawInRect:sliceRect fromRect:NSZeroRect operation:NSCompositeSourceOver fraction:1.0];
            sliceRect.origin.x += round(sliceRect.size.width);
        }
        [slicesImage unlockFocus];
    }
        
    [awningCompositeImage lockFocus];
    {
        if (leftWidth + rightWidth > windowSize.width)
        {
            // there's no slices, and the images are just going to overlap cause the window's too small
            leftWidth = roundf(windowSize.width/2);
            rightWidth = roundf(windowSize.width - leftWidth);
        }
        if (!slicesImage && (leftWidth + rightWidth < windowSize.width))
        {
            // no slices, and the images don't quite take up enough room.  make the left one bigger
            leftWidth = roundf(windowSize.width - rightWidth);
        }


        NSRect leftRect = NSMakeRect(0, 0, leftWidth, [awningLeft size].height);
        [awningLeft drawInRect:leftRect fromRect:NSZeroRect operation:NSCompositeSourceOver fraction:1.0];
        
        NSRect slicesRect = NSMakeRect(leftWidth, 0, windowSize.width - leftWidth - rightWidth,[awningSlice size].height);
        [slicesImage drawInRect:slicesRect fromRect:NSZeroRect operation:NSCompositeSourceOver fraction:1.0];
        
        NSRect rightRect = NSMakeRect(windowSize.width-rightWidth, 0, rightWidth, [awningRight size].height);
        [awningRight drawInRect:rightRect fromRect:NSZeroRect operation:NSCompositeSourceOver fraction:1.0];

    }
    [awningCompositeImage unlockFocus];
    
    return [NSColor colorWithPatternImage:awningCompositeImage];
}


- (void)setFrame:(NSRect)windowFrame display:(BOOL)displayViews
{
    [self setBackgroundColor:[self sizedBackground]];
    [super setFrame:windowFrame display: YES];
    [self setBackgroundColor:[self sizedBackground]];

}

- (void)setFrame:(NSRect)windowFrame display:(BOOL)displayViews animate:(BOOL)performAnimation
{
    [super setFrame:windowFrame display:NO animate:NO];
    [self setBackgroundColor:[self sizedBackground]];
}


#pragma mark NSResponder


- (void)mouseDown:(NSEvent *)theEvent
{
    lastLocationInWindow = [theEvent locationInWindow];
    [[NSNotificationCenter defaultCenter] postNotificaitonAwningWindowDidStartMove];
}

- (void)mouseDragged:(NSEvent*)theEvent
{
    NSWindow *mainWindow = [self parentWindow];

    CGFloat deltaX = lastLocationInWindow.x - [theEvent locationInWindow].x;
    CGFloat deltaY = lastLocationInWindow.y - [theEvent locationInWindow].y;
    NSRect frame = [mainWindow frame];
    frame.origin.x -= deltaX;
    frame.origin.y -= deltaY;
    [mainWindow setFrameOrigin:frame.origin];
}

- (void)mouseUp:(NSEvent *)theEvent
{
    [[NSNotificationCenter defaultCenter] postNotificaitonAwningWindowDidEndMove];
}

@end