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// Copyright 2013 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/layers/picture_image_layer_impl.h"
#include <algorithm>
#include "cc/debug/debug_colors.h"
#include "cc/trees/layer_tree_impl.h"
namespace cc {
PictureImageLayerImpl::PictureImageLayerImpl(LayerTreeImpl* tree_impl, int id)
: PictureLayerImpl(tree_impl, id) {
}
PictureImageLayerImpl::~PictureImageLayerImpl() {
}
const char* PictureImageLayerImpl::LayerTypeAsString() const {
return "cc::PictureImageLayerImpl";
}
scoped_ptr<LayerImpl> PictureImageLayerImpl::CreateLayerImpl(
LayerTreeImpl* tree_impl) {
return PictureImageLayerImpl::Create(tree_impl, id()).PassAs<LayerImpl>();
}
void PictureImageLayerImpl::CalculateContentsScale(
float ideal_contents_scale,
float device_scale_factor,
float page_scale_factor,
bool animating_transform_to_screen,
float* contents_scale_x,
float* contents_scale_y,
gfx::Size* content_bounds) {
// CalculateRasterContentsScale always returns 1.f, so make that the ideal
// scale.
ideal_contents_scale = 1.f;
PictureLayerImpl::CalculateContentsScale(ideal_contents_scale,
device_scale_factor,
page_scale_factor,
animating_transform_to_screen,
contents_scale_x,
contents_scale_y,
content_bounds);
}
void PictureImageLayerImpl::GetDebugBorderProperties(
SkColor* color, float* width) const {
*color = DebugColors::ImageLayerBorderColor();
*width = DebugColors::ImageLayerBorderWidth(layer_tree_impl());
}
bool PictureImageLayerImpl::ShouldAdjustRasterScale(
bool animating_transform_to_screen) const {
return false;
}
void PictureImageLayerImpl::RecalculateRasterScales(
bool animating_transform_to_screen) {
// Defaults from PictureLayerImpl.
PictureLayerImpl::RecalculateRasterScales(animating_transform_to_screen);
// Don't scale images during rastering to ensure image quality, save memory
// and avoid frequent re-rastering on change of scale.
raster_contents_scale_ = std::max(1.f, MinimumContentsScale());
// We don't need low res tiles.
low_res_raster_contents_scale_ = raster_contents_scale_;
}
} // namespace cc
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