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 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#import "WebTiledLayer.h" 28 29#import "GraphicsContext.h" 30#import "GraphicsLayerCA.h" 31#import "PlatformCALayer.h" 32 33#if PLATFORM(IOS) 34#import "WebCoreThread.h" 35#import "WebCoreThreadRun.h" 36#endif 37 38using namespace WebCore; 39 40@implementation WebTiledLayer 41 42// Set a zero duration for the fade in of tiles 43+ (CFTimeInterval)fadeDuration 44{ 45 return 0; 46} 47 48// Make sure that tiles are drawn on the main thread 49+ (BOOL)shouldDrawOnMainThread 50{ 51#if PLATFORM(IOS) 52 // FIXME: WebKit2 always wants to draw on the main thread, but there is 53 // probably a better way to check for WebKit2 than using the existance of 54 // the web thread as a proxy. 55 return !WebThreadIsEnabled(); 56#else 57 return YES; 58#endif 59} 60 61+ (unsigned int)prefetchedTiles 62{ 63 return 2; 64} 65 66// Disable default animations 67- (id<CAAction>)actionForKey:(NSString *)key 68{ 69 UNUSED_PARAM(key); 70 return nil; 71} 72 73- (void)setNeedsDisplay 74{ 75 PlatformCALayer* layer = PlatformCALayer::platformCALayer(self); 76 if (layer && layer->owner() && layer->owner()->platformCALayerDrawsContent()) 77 [super setNeedsDisplay]; 78} 79 80- (void)setNeedsDisplayInRect:(CGRect)dirtyRect 81{ 82 PlatformCALayer* platformLayer = PlatformCALayer::platformCALayer(self); 83 if (!platformLayer) { 84 [super setNeedsDisplayInRect:dirtyRect]; 85 return; 86 } 87 88 if (PlatformCALayerClient* layerOwner = platformLayer->owner()) { 89 if (layerOwner->platformCALayerDrawsContent()) { 90 if (layerOwner->platformCALayerContentsOrientation() == WebCore::GraphicsLayer::CompositingCoordinatesBottomUp) 91 dirtyRect.origin.y = [self bounds].size.height - dirtyRect.origin.y - dirtyRect.size.height; 92 93 [super setNeedsDisplayInRect:dirtyRect]; 94 95 if (layerOwner->platformCALayerShowRepaintCounter(platformLayer)) { 96 CGRect bounds = [self bounds]; 97 CGRect indicatorRect = CGRectMake(bounds.origin.x, bounds.origin.y, 52, 27); 98 if (layerOwner->platformCALayerContentsOrientation() == WebCore::GraphicsLayer::CompositingCoordinatesBottomUp) 99 indicatorRect.origin.y = [self bounds].size.height - indicatorRect.origin.y - indicatorRect.size.height; 100 101 [super setNeedsDisplayInRect:indicatorRect]; 102 } 103 } 104 } 105} 106 107- (void)display 108{ 109 [super display]; 110#if PLATFORM(IOS) 111 // CATiledLayer never calls display on a background thread, so it's safe 112 // to assume we're either on the main thread or on the web thread. 113 if (pthread_main_np()) 114 WebThreadLock(); 115 ASSERT(WebThreadIsLockedOrDisabled()); 116#endif 117 PlatformCALayer* layer = PlatformCALayer::platformCALayer(self); 118 if (layer && layer->owner()) 119 layer->owner()->platformCALayerLayerDidDisplay(self); 120} 121 122- (void)drawInContext:(CGContextRef)context 123{ 124#if PLATFORM(IOS) 125 void (^draw)() = ^{ 126#endif 127 PlatformCALayer* layer = PlatformCALayer::platformCALayer(self); 128 if (layer) 129 drawLayerContents(context, layer); 130#if PLATFORM(IOS) 131 }; 132 if (pthread_main_np()) { 133 WebThreadLock(); 134 draw(); 135 } else 136 WebThreadRunSync(draw); 137#endif 138} 139 140@end // implementation WebTiledLayer 141