125 lines
2.7 KiB
Objective-C
125 lines
2.7 KiB
Objective-C
/*
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* Copyright 2011 Sven Weidauer <sven.weidauer@gmail.com>
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*
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* This file is part of NetSurf, http://www.netsurf-browser.org/
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*
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* NetSurf is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; version 2 of the License.
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*
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* NetSurf is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#import "cocoa/TreeView.h"
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#import "cocoa/Tree.h"
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#import "desktop/plotters.h"
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@interface TreeView () <TreeDelegate>
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@end
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@implementation TreeView
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@synthesize tree;
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- (void)drawRect:(NSRect)dirtyRect
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{
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[tree drawRect: dirtyRect inView: self];
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}
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- (BOOL) isFlipped;
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{
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return YES;
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}
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- (void) dealloc;
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{
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[self setTree: nil];
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[super dealloc];
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}
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- (void) setTree: (Tree *)newTree;
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{
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if (tree != newTree) {
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[tree setRedrawing: NO];
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[tree setDelegate: nil];
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[tree release];
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tree = [newTree retain];
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[tree setDelegate: self];
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[tree setRedrawing: YES];
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[self setNeedsDisplay: YES];
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}
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}
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//MARK: -
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//MARK: Event handlers
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- (void)mouseDown: (NSEvent *)event;
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{
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isDragging = NO;
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dragStart = [self convertPoint: [event locationInWindow] fromView: nil];
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[tree mouseAction: BROWSER_MOUSE_PRESS_1 atPoint: dragStart];
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}
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#define squared(x) ((x)*(x))
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#define MinDragDistance (5.0)
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- (void) mouseDragged: (NSEvent *)event;
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{
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const NSPoint point = [self convertPoint: [event locationInWindow] fromView: nil];
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if (!isDragging) {
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const CGFloat distance = squared( dragStart.x - point.x ) + squared( dragStart.y - point.y );
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if (distance >= squared( MinDragDistance)) isDragging = YES;
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}
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}
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- (void) mouseUp: (NSEvent *)event;
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{
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const NSPoint point = [self convertPoint: [event locationInWindow] fromView: nil];
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browser_mouse_state modifierFlags = 0;
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if (isDragging) {
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isDragging = NO;
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[tree mouseDragEnd: modifierFlags fromPoint: dragStart toPoint: point];
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} else {
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modifierFlags |= BROWSER_MOUSE_CLICK_1;
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if ([event clickCount] == 2) modifierFlags |= BROWSER_MOUSE_DOUBLE_CLICK;
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[tree mouseAction: modifierFlags atPoint: point];
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}
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}
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//MARK: -
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//MARK: Tree delegate methods
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- (void) tree: (Tree *)t requestedRedrawInRect: (NSRect) rect;
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{
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[self setNeedsDisplayInRect: rect];
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}
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- (void) tree: (Tree *)t resized: (NSSize) size;
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{
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[self setMinimumSize: size];
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}
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- (void) tree: (Tree *)t scrollPoint: (NSPoint) point;
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{
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[self scrollPoint: point];
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}
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- (NSSize) treeWindowSize: (Tree *)t;
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{
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return [self frame].size;
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}
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@end
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