12a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)// Copyright 2012 The Chromium Authors. All rights reserved. 22a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)// Use of this source code is governed by a BSD-style license that can be 32a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)// found in the LICENSE file. 42a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 52a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)#ifndef CC_LAYERS_CONTENTS_SCALING_LAYER_H_ 62a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)#define CC_LAYERS_CONTENTS_SCALING_LAYER_H_ 72a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 82a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)#include "cc/base/cc_export.h" 92a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)#include "cc/layers/layer.h" 102a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 112a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)namespace cc { 122a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 132a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)// Base class for layers that need contents scale. 142a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)// The content bounds are determined by bounds and scale of the contents. 152a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)class CC_EXPORT ContentsScalingLayer : public Layer { 162a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) public: 172a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) virtual void CalculateContentsScale( 182a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) float ideal_contents_scale, 19b2df76ea8fec9e32f6f3718986dba0d95315b29cTorne (Richard Coles) float device_scale_factor, 20b2df76ea8fec9e32f6f3718986dba0d95315b29cTorne (Richard Coles) float page_scale_factor, 212a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) bool animating_transform_to_screen, 222a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) float* contents_scale_x, 232a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) float* contents_scale_y, 242a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) gfx::Size* content_bounds) OVERRIDE; 252a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 267dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch virtual bool Update( 272a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) ResourceUpdateQueue* queue, 28eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch const OcclusionTracker* occlusion) OVERRIDE; 292a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 302a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) protected: 312a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) ContentsScalingLayer(); 322a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) virtual ~ContentsScalingLayer(); 332a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 342a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) gfx::Size ComputeContentBoundsForScale(float scale_x, float scale_y) const; 352a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 362a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) private: 372a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) float last_update_contents_scale_x_; 382a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) float last_update_contents_scale_y_; 39c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) 40c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) DISALLOW_COPY_AND_ASSIGN(ContentsScalingLayer); 412a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)}; 422a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 432a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)} // namespace cc 442a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 452a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)#endif // CC_LAYERS_CONTENTS_SCALING_LAYER_H__ 46