/*
* Copyright (C) 2010 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#import "WebRenderLayer.h"
#import "WebFrameInternal.h"
#import <WebCore/Frame.h>
#import <WebCore/FrameLoaderClient.h>
#import <WebCore/PlatformString.h>
#import <WebCore/RenderLayer.h>
#import <WebCore/RenderLayerBacking.h>
#import <WebCore/RenderView.h>
#import <WebCore/StyledElement.h>
using namespace WebCore;
@interface WebRenderLayer(Private)
- (id)initWithRenderLayer:(RenderLayer *)layer;
- (void)buildDescendantLayers:(RenderLayer*)rootLayer;
@end
@implementation WebRenderLayer
+ (NSString *)nameForLayer:(RenderLayer*)layer
{
RenderObject* renderer = layer->renderer();
NSString *name = [NSString stringWithUTF8String:renderer->renderName()];
if (Node* node = renderer->node()) {
if (node->isElementNode())
name = [name stringByAppendingFormat:@" %@", (NSString *)static_cast<Element*>(node)->tagName()];
if (node->hasID())
name = [name stringByAppendingFormat:@" id=\"%@\"", (NSString *)static_cast<Element*>(node)->getIdAttribute()];
if (node->hasClass()) {
StyledElement* styledElement = static_cast<StyledElement*>(node);
String classes;
for (size_t i = 0; i < styledElement->classNames().size(); ++i) {
if (i > 0)
classes += " ";
classes += styledElement->classNames()[i];
}
name = [name stringByAppendingFormat:@" class=\"%@\"", (NSString *)classes];
}
}
if (layer->isReflection())
name = [name stringByAppendingString:@" (reflection)"];
return name;
}
+ (NSString *)compositingInfoForLayer:(RenderLayer*)layer
{
if (!layer->isComposited())
return @"";
NSString *layerType = @"";
#if USE(ACCELERATED_COMPOSITING)
RenderLayerBacking* backing = layer->backing();
switch (backing->compositingLayerType()) {
case NormalCompositingLayer:
layerType = @"composited";
break;
case TiledCompositingLayer:
layerType = @"composited: tiled layer";
break;
case MediaCompositingLayer:
layerType = @"composited for plug-in, video or WebGL";
break;
case ContainerCompositingLayer:
layerType = @"composited: container layer";
break;
}
if (backing->hasClippingLayer())
layerType = [layerType stringByAppendingString:@" (clipping)"];
if (backing->hasAncestorClippingLayer())
layerType = [layerType stringByAppendingString:@" (clipped)"];
#endif
return layerType;
}
- (id)initWithRenderLayer:(RenderLayer*)layer
{
if ((self = [super init])) {
name = [[WebRenderLayer nameForLayer:layer] retain];
bounds = layer->absoluteBoundingBox();
composited = layer->isComposited();
compositingInfo = [[WebRenderLayer compositingInfoForLayer:layer] retain];
}
return self;
}
- (id)initWithName:(NSString*)layerName
{
if ((self = [super init])) {
name = [layerName copy];
separator = YES;
}
return self;
}
// Only called on the root.
- (id)initWithWebFrame:(WebFrame *)webFrame
{
self = [super init];
Frame* frame = core(webFrame);
if (!frame->loader()->client()->hasHTMLView()) {
[self release];
return nil;
}
RenderObject* renderer = frame->contentRenderer();
if (!renderer) {
[self release];
return nil;
}
if (renderer->hasLayer()) {
RenderLayer* layer = toRenderBoxModelObject(renderer)->layer();
name = [[WebRenderLayer nameForLayer:layer] retain];
bounds = layer->absoluteBoundingBox();
composited = layer->isComposited();
compositingInfo = [[WebRenderLayer compositingInfoForLayer:layer] retain];
[self buildDescendantLayers:layer];
}
return self;
}
- (void)dealloc
{
[children release];
[name release];
[compositingInfo release];
[super dealloc];
}
- (void)buildDescendantLayers:(RenderLayer*)layer
{
NSMutableArray *childWebLayers = [[NSMutableArray alloc] init];
// Build children in back to front order.
if (Vector<RenderLayer*>* negZOrderList = layer->negZOrderList()) {
size_t listSize = negZOrderList->size();
if (listSize) {
WebRenderLayer* newLayer = [[WebRenderLayer alloc] initWithName:@"-ve z-order list"];
[childWebLayers addObject:newLayer];
[newLayer release];
}
for (size_t i = 0; i < listSize; ++i) {
RenderLayer* curLayer = negZOrderList->at(i);
WebRenderLayer* newLayer = [[WebRenderLayer alloc] initWithRenderLayer:curLayer];
[newLayer buildDescendantLayers:curLayer];
[childWebLayers addObject:newLayer];
[newLayer release];
}
}
if (Vector<RenderLayer*>* normalFlowList = layer->normalFlowList()) {
size_t listSize = normalFlowList->size();
if (listSize) {
WebRenderLayer* newLayer = [[WebRenderLayer alloc] initWithName:@"normal flow list"];
[childWebLayers addObject:newLayer];
[newLayer release];
}
for (size_t i = 0; i < listSize; ++i) {
RenderLayer* curLayer = normalFlowList->at(i);
WebRenderLayer* newLayer = [[WebRenderLayer alloc] initWithRenderLayer:curLayer];
[newLayer buildDescendantLayers:curLayer];
[childWebLayers addObject:newLayer];
[newLayer release];
}
}
if (Vector<RenderLayer*>* posZOrderList = layer->posZOrderList()) {
size_t listSize = posZOrderList->size();
if (listSize) {
WebRenderLayer* newLayer = [[WebRenderLayer alloc] initWithName:@"+ve z-order list"];
[childWebLayers addObject:newLayer];
[newLayer release];
}
for (size_t i = 0; i < listSize; ++i) {
RenderLayer* curLayer = posZOrderList->at(i);
WebRenderLayer* newLayer = [[WebRenderLayer alloc] initWithRenderLayer:curLayer];
[newLayer buildDescendantLayers:curLayer];
[childWebLayers addObject:newLayer];
[newLayer release];
}
}
children = childWebLayers;
}
- (NSArray *)children
{
return children;
}
- (NSString *)name
{
return name;
}
- (NSString *)positionString
{
return [NSString stringWithFormat:@"(%.0f, %.0f)", bounds.origin.x, bounds.origin.y];
}
- (NSString *)widthString
{
return [NSString stringWithFormat:@"%.0f", bounds.size.width];
}
- (NSString *)heightString
{
return [NSString stringWithFormat:@"%.0f", bounds.size.height];
}
- (NSString *)compositingInfo
{
return compositingInfo;
}
- (BOOL)isComposited
{
return composited;
}
- (BOOL)isSeparator
{
return separator;
}
@end