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 SetIsDrawable(true); 21 UpdateDrawsContent(HasDrawableContent()); 22 } 23 24 HeadsUpDisplayLayer::~HeadsUpDisplayLayer() {} 25 26 void HeadsUpDisplayLayer::PrepareForCalculateDrawProperties( 27 const gfx::Size& device_viewport, float device_scale_factor) { 28 gfx::Size device_viewport_in_layout_pixels = gfx::Size( 29 device_viewport.width() / device_scale_factor, 30 device_viewport.height() / device_scale_factor); 31 32 gfx::Size bounds; 33 gfx::Transform matrix; 34 matrix.MakeIdentity(); 35 36 if (layer_tree_host()->debug_state().ShowHudRects()) { 37 int max_texture_size = 38 layer_tree_host()->GetRendererCapabilities().max_texture_size; 39 bounds.SetSize(std::min(max_texture_size, 40 device_viewport_in_layout_pixels.width()), 41 std::min(max_texture_size, 42 device_viewport_in_layout_pixels.height())); 43 } else { 44 int size = 256; 45 bounds.SetSize(size, size); 46 matrix.Translate(device_viewport_in_layout_pixels.width() - size, 0.0); 47 } 48 49 SetBounds(bounds); 50 SetTransform(matrix); 51 } 52 53 bool HeadsUpDisplayLayer::HasDrawableContent() const { 54 return true; 55 } 56 57 scoped_ptr<LayerImpl> HeadsUpDisplayLayer::CreateLayerImpl( 58 LayerTreeImpl* tree_impl) { 59 return HeadsUpDisplayLayerImpl::Create(tree_impl, layer_id_). 60 PassAs<LayerImpl>(); 61 } 62 63 } // namespace cc 64
