1/*
2 * Copyright (C) 2009 Apple Inc. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 *    notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 *    notice, this list of conditions and the following disclaimer in the
11 *    documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26#include "config.h"
27
28#if USE(ACCELERATED_COMPOSITING)
29
30#import "WebTiledLayer.h"
31
32#import "GraphicsContext.h"
33#import "GraphicsLayerCA.h"
34#import "PlatformCALayer.h"
35#import <wtf/UnusedParam.h>
36
37using namespace WebCore;
38
39@implementation WebTiledLayer
40
41// Set a zero duration for the fade in of tiles
42+ (CFTimeInterval)fadeDuration
43{
44    return 0;
45}
46
47// Make sure that tiles are drawn on the main thread
48+ (BOOL)shouldDrawOnMainThread
49{
50    return YES;
51}
52
53// Disable default animations
54- (id<CAAction>)actionForKey:(NSString *)key
55{
56    UNUSED_PARAM(key);
57    return nil;
58}
59
60- (void)setNeedsDisplay
61{
62    PlatformCALayer* layer = PlatformCALayer::platformCALayer(self);
63    if (layer && layer->owner() && layer->owner()->platformCALayerDrawsContent())
64        [super setNeedsDisplay];
65}
66
67- (void)setNeedsDisplayInRect:(CGRect)dirtyRect
68{
69    PlatformCALayer* layer = PlatformCALayer::platformCALayer(self);
70    if (layer)
71        setLayerNeedsDisplayInRect(self, layer->owner(), dirtyRect);
72}
73
74- (void)display
75{
76    [super display];
77    PlatformCALayer* layer = PlatformCALayer::platformCALayer(self);
78    if (layer && layer->owner())
79        layer->owner()->platformCALayerLayerDidDisplay(self);
80}
81
82- (void)drawInContext:(CGContextRef)context
83{
84    PlatformCALayer* layer = PlatformCALayer::platformCALayer(self);
85    if (layer)
86        drawLayerContents(context, self, layer);
87}
88
89@end // implementation WebTiledLayer
90
91#endif // USE(ACCELERATED_COMPOSITING)
92