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// Copyright 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "cc/picture_layer_impl.h"
#include "base/time.h"
#include "cc/append_quads_data.h"
#include "cc/checkerboard_draw_quad.h"
#include "cc/debug_border_draw_quad.h"
#include "cc/debug_colors.h"
#include "cc/layer_tree_host_impl.h"
#include "cc/math_util.h"
#include "cc/quad_sink.h"
#include "cc/solid_color_draw_quad.h"
#include "cc/tile_draw_quad.h"
namespace cc {
PictureLayerImpl::PictureLayerImpl(int id) :
LayerImpl(id),
tilings_(this),
pile_(PicturePileImpl::Create()),
last_update_time_(0) {
}
PictureLayerImpl::~PictureLayerImpl() {
}
const char* PictureLayerImpl::layerTypeAsString() const {
return "PictureLayer";
}
void PictureLayerImpl::appendQuads(QuadSink& quadSink,
AppendQuadsData& appendQuadsData) {
const gfx::Rect& rect = visibleContentRect();
gfx::Rect content_rect(gfx::Point(), contentBounds());
SharedQuadState* sharedQuadState =
quadSink.useSharedQuadState(createSharedQuadState());
bool clipped = false;
gfx::QuadF target_quad = MathUtil::mapQuad(
drawTransform(),
gfx::QuadF(rect),
clipped);
bool isAxisAlignedInTarget = !clipped && target_quad.IsRectilinear();
bool useAA = !isAxisAlignedInTarget;
if (showDebugBorders()) {
for (PictureLayerTilingSet::Iterator iter(&tilings_,
contentsScaleX(),
rect);
iter;
++iter) {
SkColor color;
float width;
if (*iter && iter->resource_id()) {
color = DebugColors::TileBorderColor();
width = DebugColors::TileBorderWidth(layerTreeHostImpl());
} else {
color = DebugColors::MissingTileBorderColor();
width = DebugColors::MissingTileBorderWidth(layerTreeHostImpl());
}
scoped_ptr<DebugBorderDrawQuad> debugBorderQuad =
DebugBorderDrawQuad::Create();
gfx::Rect geometry_rect = iter.geometry_rect();
debugBorderQuad->SetNew(sharedQuadState, geometry_rect, color, width);
quadSink.append(debugBorderQuad.PassAs<DrawQuad>(), appendQuadsData);
}
}
for (PictureLayerTilingSet::Iterator iter(&tilings_, contentsScaleX(), rect);
iter;
++iter) {
ResourceProvider::ResourceId resource = 0;
if (*iter)
resource = iter->resource_id();
gfx::Rect geometry_rect = iter.geometry_rect();
if (!resource) {
if (drawCheckerboardForMissingTiles()) {
// TODO(enne): Figure out how to show debug "invalidated checker" color
scoped_ptr<CheckerboardDrawQuad> quad = CheckerboardDrawQuad::Create();
SkColor color = DebugColors::DefaultCheckerboardColor();
quad->SetNew(sharedQuadState, geometry_rect, color);
appendQuadsData.hadMissingTiles |=
quadSink.append(quad.PassAs<DrawQuad>(), appendQuadsData);
} else {
scoped_ptr<SolidColorDrawQuad> quad = SolidColorDrawQuad::Create();
quad->SetNew(sharedQuadState, geometry_rect, backgroundColor());
appendQuadsData.hadMissingTiles |=
quadSink.append(quad.PassAs<DrawQuad>(), appendQuadsData);
}
continue;
}
gfx::RectF texture_rect = iter.texture_rect();
gfx::Rect opaque_rect = iter->opaque_rect();
opaque_rect.Intersect(content_rect);
bool outside_left_edge = geometry_rect.x() == content_rect.x();
bool outside_top_edge = geometry_rect.y() == content_rect.y();
bool outside_right_edge = geometry_rect.right() == content_rect.right();
bool outside_bottom_edge = geometry_rect.bottom() == content_rect.bottom();
scoped_ptr<TileDrawQuad> quad = TileDrawQuad::Create();
quad->SetNew(sharedQuadState,
geometry_rect,
opaque_rect,
resource,
texture_rect,
iter.texture_size(),
iter->contents_swizzled(),
outside_left_edge && useAA,
outside_top_edge && useAA,
outside_right_edge && useAA,
outside_bottom_edge && useAA);
quadSink.append(quad.PassAs<DrawQuad>(), appendQuadsData);
}
}
void PictureLayerImpl::dumpLayerProperties(std::string*, int indent) const {
// TODO(enne): implement me
}
void PictureLayerImpl::didUpdateTransforms() {
tilings_.SetLayerBounds(bounds());
// TODO(enne): Add more tilings during pinch zoom.
if (!tilings_.num_tilings()) {
gfx::Size tile_size = layerTreeHostImpl()->settings().defaultTileSize;
tilings_.AddTiling(contentsScaleX(), tile_size);
// TODO(enne): handle invalidations, create new tiles
}
gfx::Transform current_screen_space_transform = screenSpaceTransform();
double current_time =
(base::TimeTicks::Now() - base::TimeTicks()).InSecondsF();
double time_delta = 0;
if (last_update_time_ != 0 && last_bounds_ == bounds() &&
last_content_bounds_ == contentBounds() &&
last_content_scale_x_ == contentsScaleX() &&
last_content_scale_y_ == contentsScaleY()) {
time_delta = current_time - last_update_time_;
}
tilings_.UpdateTilePriorities(layerTreeHostImpl()->deviceViewportSize(),
contentsScaleX(),
contentsScaleY(),
last_screen_space_transform_,
current_screen_space_transform,
time_delta);
last_screen_space_transform_ = current_screen_space_transform;
last_update_time_ = current_time;
last_bounds_ = bounds();
last_content_bounds_ = contentBounds();
last_content_scale_x_ = contentsScaleX();
last_content_scale_y_ = contentsScaleY();
}
scoped_refptr<Tile> PictureLayerImpl::CreateTile(PictureLayerTiling* tiling,
gfx::Rect rect) {
TileManager* tile_manager = layerTreeHostImpl()->tileManager();
return make_scoped_refptr(new Tile(
tile_manager,
pile_.get(),
rect.size(),
GL_RGBA,
rect,
tiling->contents_scale()));
}
void PictureLayerImpl::SyncFromActiveLayer(const PictureLayerImpl* other) {
tilings_.CloneFrom(other->tilings_);
}
} // namespace cc
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