169 lines
3.6 KiB
Objective-C
169 lines
3.6 KiB
Objective-C
//
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// PSMOverflowPopUpButton.m
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// NetScrape
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//
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// Created by John Pannell on 8/4/04.
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// Copyright 2004 Positive Spin Media. All rights reserved.
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//
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#import "PSMRolloverButton.h"
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@implementation PSMRolloverButton
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- (void)awakeFromNib {
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if([[self superclass] instancesRespondToSelector:@selector(awakeFromNib)]) {
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[super awakeFromNib];
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}
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[[NSNotificationCenter defaultCenter] addObserver:self
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selector:@selector(rolloverFrameDidChange:)
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name:NSViewFrameDidChangeNotification
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object:self];
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[self setPostsFrameChangedNotifications:YES];
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[self resetCursorRects];
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_myTrackingRectTag = -1;
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}
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- (void)dealloc {
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[[NSNotificationCenter defaultCenter] removeObserver:self];
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[self removeTrackingRect];
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[super dealloc];
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}
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// the regular image
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- (void)setUsualImage:(NSImage *)newImage {
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[newImage retain];
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[_usualImage release];
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_usualImage = newImage;
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[self setImage:_usualImage];
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}
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- (NSImage *)usualImage {
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return _usualImage;
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}
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- (void)setRolloverImage:(NSImage *)newImage {
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[newImage retain];
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[_rolloverImage release];
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_rolloverImage = newImage;
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}
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- (NSImage *)rolloverImage {
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return _rolloverImage;
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}
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//Remove old tracking rects when we change superviews
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- (void)viewWillMoveToSuperview:(NSView *)newSuperview {
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[self removeTrackingRect];
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[super viewWillMoveToSuperview:newSuperview];
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}
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- (void)viewDidMoveToSuperview {
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[super viewDidMoveToSuperview];
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[self resetCursorRects];
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}
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- (void)viewWillMoveToWindow:(NSWindow *)newWindow {
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[self removeTrackingRect];
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[super viewWillMoveToWindow:newWindow];
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}
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- (void)viewDidMoveToWindow {
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[super viewDidMoveToWindow];
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[self resetCursorRects];
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}
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- (void)rolloverFrameDidChange:(NSNotification *)inNotification {
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[self resetCursorRects];
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}
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- (void)addTrackingRect {
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// assign a tracking rect to watch for mouse enter/exit
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NSRect trackRect = [self bounds];
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NSPoint localPoint = [self convertPoint:[[self window] convertScreenToBase:[NSEvent mouseLocation]]
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fromView:nil];
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BOOL mouseInside = NSPointInRect(localPoint, trackRect);
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_myTrackingRectTag = [self addTrackingRect:trackRect owner:self userData:nil assumeInside:mouseInside];
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if(mouseInside) {
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[self mouseEntered:nil];
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} else{
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[self mouseExited:nil];
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}
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}
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- (void)removeTrackingRect {
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if(_myTrackingRectTag != -1) {
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[self removeTrackingRect:_myTrackingRectTag];
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}
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_myTrackingRectTag = -1;
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}
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// override for rollover effect
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- (void)mouseEntered:(NSEvent *)theEvent;
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{
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// set rollover image
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[self setImage:_rolloverImage];
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[super mouseEntered:theEvent];
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}
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- (void)mouseExited:(NSEvent *)theEvent;
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{
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// restore usual image
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[self setImage:_usualImage];
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[super mouseExited:theEvent];
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}
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- (void)resetCursorRects {
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// called when the button rect has been changed
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[self removeTrackingRect];
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[self addTrackingRect];
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}
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- (void)setFrame:(NSRect)rect {
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[super setFrame:rect];
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[self resetCursorRects];
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}
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- (void)setBounds:(NSRect)rect {
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[super setBounds:rect];
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[self resetCursorRects];
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}
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#pragma mark -
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#pragma mark Archiving
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- (void)encodeWithCoder:(NSCoder *)aCoder {
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[super encodeWithCoder:aCoder];
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if([aCoder allowsKeyedCoding]) {
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[aCoder encodeObject:_rolloverImage forKey:@"rolloverImage"];
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[aCoder encodeObject:_usualImage forKey:@"usualImage"];
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[aCoder encodeInt64:_myTrackingRectTag forKey:@"myTrackingRectTag"];
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}
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}
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- (id)initWithCoder:(NSCoder *)aDecoder {
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self = [super initWithCoder:aDecoder];
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if(self) {
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if([aDecoder allowsKeyedCoding]) {
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_rolloverImage = [[aDecoder decodeObjectForKey:@"rolloverImage"] retain];
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_usualImage = [[aDecoder decodeObjectForKey:@"usualImage"] retain];
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_myTrackingRectTag = [aDecoder decodeInt64ForKey:@"myTrackingRectTag"];
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}
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}
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return self;
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}
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@end
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