1 // Copyright 2012 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #include "cc/layers/heads_up_display_layer.h" 6 7 #include <algorithm> 8 9 #include "base/debug/trace_event.h" 10 #include "cc/layers/heads_up_display_layer_impl.h" 11 #include "cc/trees/layer_tree_host.h" 12 13 namespace cc { 14 15 scoped_refptr<HeadsUpDisplayLayer> HeadsUpDisplayLayer::Create() { 16 return make_scoped_refptr(new HeadsUpDisplayLayer()); 17 } 18 19 HeadsUpDisplayLayer::HeadsUpDisplayLayer() {} 20 21 HeadsUpDisplayLayer::~HeadsUpDisplayLayer() {} 22 23 void HeadsUpDisplayLayer::PrepareForCalculateDrawProperties( 24 gfx::Size device_viewport, float device_scale_factor) { 25 gfx::Size device_viewport_in_layout_pixels = gfx::Size( 26 device_viewport.width() / device_scale_factor, 27 device_viewport.height() / device_scale_factor); 28 29 gfx::Size bounds; 30 gfx::Transform matrix; 31 matrix.MakeIdentity(); 32 33 if (layer_tree_host()->debug_state().ShowHudRects()) { 34 int max_texture_size = 35 layer_tree_host()->GetRendererCapabilities().max_texture_size; 36 bounds.SetSize(std::min(max_texture_size, 37 device_viewport_in_layout_pixels.width()), 38 std::min(max_texture_size, 39 device_viewport_in_layout_pixels.height())); 40 } else { 41 int size = 256; 42 bounds.SetSize(size, size); 43 matrix.Translate(device_viewport_in_layout_pixels.width() - size, 0.0); 44 } 45 46 SetBounds(bounds); 47 SetTransform(matrix); 48 } 49 50 bool HeadsUpDisplayLayer::DrawsContent() const { return true; } 51 52 scoped_ptr<LayerImpl> HeadsUpDisplayLayer::CreateLayerImpl( 53 LayerTreeImpl* tree_impl) { 54 return HeadsUpDisplayLayerImpl::Create(tree_impl, layer_id_). 55 PassAs<LayerImpl>(); 56 } 57 58 } // namespace cc 59
