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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/layers/heads_up_display_layer.h"
#include <algorithm>
#include "base/debug/trace_event.h"
#include "cc/layers/heads_up_display_layer_impl.h"
#include "cc/trees/layer_tree_host.h"
namespace cc {
scoped_refptr<HeadsUpDisplayLayer> HeadsUpDisplayLayer::Create() {
return make_scoped_refptr(new HeadsUpDisplayLayer());
}
HeadsUpDisplayLayer::HeadsUpDisplayLayer() {}
HeadsUpDisplayLayer::~HeadsUpDisplayLayer() {}
void HeadsUpDisplayLayer::PrepareForCalculateDrawProperties(
gfx::Size device_viewport, float device_scale_factor) {
gfx::Size device_viewport_in_layout_pixels = gfx::Size(
device_viewport.width() / device_scale_factor,
device_viewport.height() / device_scale_factor);
gfx::Size bounds;
gfx::Transform matrix;
matrix.MakeIdentity();
if (layer_tree_host()->debug_state().ShowHudRects()) {
int max_texture_size =
layer_tree_host()->GetRendererCapabilities().max_texture_size;
bounds.SetSize(std::min(max_texture_size,
device_viewport_in_layout_pixels.width()),
std::min(max_texture_size,
device_viewport_in_layout_pixels.height()));
} else {
int size = 256;
bounds.SetSize(size, size);
matrix.Translate(device_viewport_in_layout_pixels.width() - size, 0.0);
}
SetBounds(bounds);
SetTransform(matrix);
}
bool HeadsUpDisplayLayer::DrawsContent() const { return true; }
scoped_ptr<LayerImpl> HeadsUpDisplayLayer::CreateLayerImpl(
LayerTreeImpl* tree_impl) {
return HeadsUpDisplayLayerImpl::Create(tree_impl, layer_id_).
PassAs<LayerImpl>();
}
std::string HeadsUpDisplayLayer::DebugName() {
return std::string("Heads Up Display Layer");
}
} // namespace cc
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