netsurf/frontends/cocoa/PSMTabBarControl/PSMOverflowPopUpButton.m

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//
// PSMOverflowPopUpButton.m
// PSMTabBarControl
//
// Created by John Pannell on 11/4/05.
// Copyright 2005 Positive Spin Media. All rights reserved.
//
#import "PSMOverflowPopUpButton.h"
#import "PSMTabBarControl.h"
#define TIMER_INTERVAL 1.0 / 15.0
#define ANIMATION_STEP 0.033f
@implementation PSMOverflowPopUpButton
- (id)initWithFrame:(NSRect)frameRect pullsDown:(BOOL)flag {
if ((self = [super initWithFrame:frameRect pullsDown:YES]) != nil) {
[self setBezelStyle:NSRegularSquareBezelStyle];
[self setBordered:NO];
[self setTitle:@""];
[self setPreferredEdge:NSMaxXEdge];
_PSMTabBarOverflowPopUpImage = [[NSImage alloc] initByReferencingFile:[[PSMTabBarControl bundle] pathForImageResource:@"overflowImage"]];
_PSMTabBarOverflowDownPopUpImage = [[NSImage alloc] initByReferencingFile:[[PSMTabBarControl bundle] pathForImageResource:@"overflowImagePressed"]];
_animatingAlternateImage = NO;
}
return self;
}
- (void)dealloc {
[_PSMTabBarOverflowPopUpImage release];
[_PSMTabBarOverflowDownPopUpImage release];
[super dealloc];
}
- (void)drawRect:(NSRect)rect {
if(_PSMTabBarOverflowPopUpImage == nil) {
[super drawRect:rect];
return;
}
NSImage *image = (_down) ? _PSMTabBarOverflowDownPopUpImage : _PSMTabBarOverflowPopUpImage;
NSSize imageSize = [image size];
NSRect bounds = [self bounds];
NSPoint drawPoint = NSMakePoint(NSMidX(bounds) - (imageSize.width * 0.5f), NSMidY(bounds) - (imageSize.height * 0.5f));
if([self isFlipped]) {
drawPoint.y += imageSize.height;
}
[image compositeToPoint:drawPoint operation:NSCompositeSourceOver fraction:(_animatingAlternateImage ? 0.7f : 1.0f)];
if(_animatingAlternateImage) {
NSImage *alternateImage = [self alternateImage];
NSSize altImageSize = [alternateImage size];
drawPoint = NSMakePoint(NSMidX(bounds) - (altImageSize.width * 0.5f), NSMidY(bounds) - (altImageSize.height * 0.5f));
if([self isFlipped]) {
drawPoint.y += altImageSize.height;
}
[[self alternateImage] compositeToPoint:drawPoint operation:NSCompositeSourceOver fraction:sin(_animationValue * M_PI)];
}
}
- (void)mouseDown:(NSEvent *)event {
_down = YES;
[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(notificationReceived:) name:NSMenuDidEndTrackingNotification object:[self menu]];
[self setNeedsDisplay:YES];
[super mouseDown:event];
}
- (void)setHidden:(BOOL)value {
if([self isHidden] != value) {
if(value) {
// Stop any animating alternate image if we hide
[_animationTimer invalidate], _animationTimer = nil;
} else if(_animatingAlternateImage) {
// Restart any animating alternate image if we unhide
_animationValue = ANIMATION_STEP;
_animationTimer = [NSTimer scheduledTimerWithTimeInterval:TIMER_INTERVAL target:self selector:@selector(animateStep:) userInfo:nil repeats:YES];
[[NSRunLoop currentRunLoop] addTimer:_animationTimer forMode:NSEventTrackingRunLoopMode];
}
}
[super setHidden:value];
}
- (void)notificationReceived:(NSNotification *)notification {
_down = NO;
[self setNeedsDisplay:YES];
[[NSNotificationCenter defaultCenter] removeObserver:self];
}
- (void)setAnimatingAlternateImage:(BOOL)flag {
if(_animatingAlternateImage != flag) {
_animatingAlternateImage = flag;
if(![self isHidden]) {
if(flag) {
_animationValue = ANIMATION_STEP;
_animationTimer = [NSTimer scheduledTimerWithTimeInterval:TIMER_INTERVAL target:self selector:@selector(animateStep:) userInfo:nil repeats:YES];
[[NSRunLoop currentRunLoop] addTimer:_animationTimer forMode:NSEventTrackingRunLoopMode];
} else {
[_animationTimer invalidate], _animationTimer = nil;
}
[self setNeedsDisplay:YES];
}
}
}
- (BOOL)animatingAlternateImage;
{
return _animatingAlternateImage;
}
- (void)animateStep:(NSTimer *)timer {
_animationValue += ANIMATION_STEP;
if(_animationValue >= 1) {
_animationValue = ANIMATION_STEP;
}
[self setNeedsDisplay:YES];
}
#pragma mark -
#pragma mark Archiving
- (void)encodeWithCoder:(NSCoder *)aCoder {
[super encodeWithCoder:aCoder];
if([aCoder allowsKeyedCoding]) {
[aCoder encodeObject:_PSMTabBarOverflowPopUpImage forKey:@"PSMTabBarOverflowPopUpImage"];
[aCoder encodeObject:_PSMTabBarOverflowDownPopUpImage forKey:@"PSMTabBarOverflowDownPopUpImage"];
[aCoder encodeBool:_animatingAlternateImage forKey:@"PSMTabBarOverflowAnimatingAlternateImage"];
}
}
- (id)initWithCoder:(NSCoder *)aDecoder {
if((self = [super initWithCoder:aDecoder])) {
if([aDecoder allowsKeyedCoding]) {
_PSMTabBarOverflowPopUpImage = [[aDecoder decodeObjectForKey:@"PSMTabBarOverflowPopUpImage"] retain];
_PSMTabBarOverflowDownPopUpImage = [[aDecoder decodeObjectForKey:@"PSMTabBarOverflowDownPopUpImage"] retain];
[self setAnimatingAlternateImage:[aDecoder decodeBoolForKey:@"PSMTabBarOverflowAnimatingAlternateImage"]];
}
}
return self;
}
@end