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Nicholas Riley
125 lines
4.3 KiB
Objective-C
125 lines
4.3 KiB
Objective-C
//
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// PBIconAndTextCell.m
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// GitX
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//
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// Created by Ciarán Walsh on 23/09/2008.
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// Copyright 2008 __MyCompanyName__. All rights reserved.
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//
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// Adopted from http://www.cocoadev.com/index.pl?NSTableViewImagesAndText
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#import "PBIconAndTextCell.h"
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@implementation PBIconAndTextCell
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@synthesize image;
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- (void)dealloc
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{
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self.image = nil;
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[super dealloc];
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}
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- (id)copyWithZone:(NSZone *)zone
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{
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PBIconAndTextCell *cell = [super copyWithZone:zone];
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cell.image = image;
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return cell;
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}
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- (void)selectWithFrame:(NSRect)aRect inView:(NSView *)controlView editor:(NSText *)textObj delegate:(id)anObject start:(NSInteger)selStart length:(NSInteger)selLength
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{
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NSRect textFrame, imageFrame;
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NSDivideRect (aRect, &imageFrame, &textFrame, 3 + [image size].width, NSMinXEdge);
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[super selectWithFrame: textFrame inView: controlView editor:textObj delegate:anObject start:selStart length:selLength];
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}
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- (void)drawWithFrame:(NSRect)cellFrame inView:(NSView *)controlView
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{
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if (image) {
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NSSize imageSize;
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NSRect imageFrame;
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imageSize = [image size];
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NSDivideRect(cellFrame, &imageFrame, &cellFrame, 3 + imageSize.width, NSMinXEdge);
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if ([self drawsBackground]) {
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[[self backgroundColor] set];
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NSRectFill(imageFrame);
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}
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imageFrame.origin.x += 3;
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imageFrame.size = imageSize;
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if ([controlView isFlipped])
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imageFrame.origin.y += floor((cellFrame.size.height + imageFrame.size.height) / 2);
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else
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imageFrame.origin.y += ceil((cellFrame.size.height - imageFrame.size.height) / 2);
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[image compositeToPoint:imageFrame.origin operation:NSCompositeSourceOver];
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}
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[super drawWithFrame:cellFrame inView:controlView];
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}
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- (NSSize)cellSize
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{
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NSSize cellSize = [super cellSize];
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cellSize.width += (image ? [image size].width : 0) + 3;
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return cellSize;
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}
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// ===============
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// = Hit testing =
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// ===============
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// Adopted from PhotoSearch Apple sample code
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- (NSUInteger)hitTestForEvent:(NSEvent *)event inRect:(NSRect)cellFrame ofView:(NSView *)controlView
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{
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NSPoint point = [controlView convertPoint:[event locationInWindow] fromView:nil];
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NSRect textFrame, imageFrame;
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NSDivideRect (cellFrame, &imageFrame, &textFrame, 3 + [image size].width, NSMinXEdge);
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if (NSMouseInRect(point, imageFrame, [controlView isFlipped]))
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return NSCellHitContentArea | NSCellHitTrackableArea;
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return [super hitTestForEvent:event inRect:cellFrame ofView:controlView];
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}
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+ (BOOL)prefersTrackingUntilMouseUp
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{
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// NSCell returns NO for this by default. If you want to have trackMouse:inRect:ofView:untilMouseUp: always track until the mouse is up, then you MUST return YES. Otherwise, strange things will happen.
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return YES;
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}
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- (BOOL)trackMouse:(NSEvent *)theEvent inRect:(NSRect)cellFrame ofView:(NSView *)controlView untilMouseUp:(BOOL)flag
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{
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[self setControlView:controlView];
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NSRect textFrame, imageFrame;
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NSDivideRect (cellFrame, &imageFrame, &textFrame, 3 + [image size].width, NSMinXEdge);
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while ([theEvent type] != NSLeftMouseUp) {
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// This is VERY simple event tracking. We simply check to see if the mouse is in the "i" button or not and dispatch entered/exited mouse events
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NSPoint point = [controlView convertPoint:[theEvent locationInWindow] fromView:nil];
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BOOL mouseInButton = NSMouseInRect(point, imageFrame, [controlView isFlipped]);
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if (mouseDownInButton != mouseInButton) {
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mouseDownInButton = mouseInButton;
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[controlView setNeedsDisplayInRect:cellFrame];
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}
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if ([theEvent type] == NSMouseEntered || [theEvent type] == NSMouseExited)
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[NSApp sendEvent:theEvent];
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// Note that we process mouse entered and exited events and dispatch them to properly handle updates
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theEvent = [[controlView window] nextEventMatchingMask:(NSLeftMouseUpMask | NSLeftMouseDraggedMask | NSMouseEnteredMask | NSMouseExitedMask)];
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}
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// Another way of implementing the above code would be to keep an NSButtonCell as an ivar, and simply call trackMouse:inRect:ofView:untilMouseUp: on it, if the tracking area was inside of it.
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if (mouseDownInButton) {
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// Send the action, and redisplay
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mouseDownInButton = NO;
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[controlView setNeedsDisplayInRect:cellFrame];
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if (self.action)
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[NSApp sendAction:self.action to:self.target from:self];
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}
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// We return YES since the mouse was released while we were tracking. Not returning YES when you processed the mouse up is an easy way to introduce bugs!
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return YES;
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}
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@end
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