ui/compositor/paint_context.cc

   1 // Copyright 2015 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 "ui/compositor/paint_context.h"
   6
   7 #include "third_party/skia/include/core/SkPictureRecorder.h"
   8 #include "ui/gfx/canvas.h"
   9
  10 namespace ui {
  11
  12 PaintContext::PaintContext(gfx::Canvas* canvas, const gfx::Rect& invalidation)
  13     : canvas_(canvas),
  14       list_(nullptr),
  15       device_scale_factor_(canvas->image_scale()),
  16       bounds_(invalidation),
  17       invalidation_(invalidation) {
  18 #if DCHECK_IS_ON()
  19   root_visited_ = nullptr;
  20   inside_paint_recorder_ = false;
  21 #endif
  22 }
  23
  24 PaintContext::PaintContext(cc::DisplayItemList* list,
  25                            float device_scale_factor,
  26                            const gfx::Rect& bounds,
  27                            const gfx::Rect& invalidation)
  28     : canvas_(nullptr),
  29       list_(list),
  30       recorder_(new SkPictureRecorder),
  31       device_scale_factor_(device_scale_factor),
  32       bounds_(bounds),
  33       invalidation_(invalidation) {
  34 #if DCHECK_IS_ON()
  35   root_visited_ = nullptr;
  36   inside_paint_recorder_ = false;
  37 #endif
  38 }
  39
  40 PaintContext::PaintContext(gfx::Canvas* canvas)
  41     : PaintContext(canvas, gfx::Rect()) {
  42 }
  43
  44 PaintContext::PaintContext(const PaintContext& other)
  45     : canvas_(other.canvas_),
  46       list_(other.list_),
  47       // The SkPictureRecorder doesn't hold state, it is only held on the
  48       // PaintContext as an optimization for fewer allocations. So we can just
  49       // make a new one here.
  50       recorder_(new SkPictureRecorder),
  51       device_scale_factor_(other.device_scale_factor_),
  52       bounds_(other.bounds_),
  53       invalidation_(other.invalidation_),
  54       offset_(other.offset_) {
  55 #if DCHECK_IS_ON()
  56   root_visited_ = other.root_visited_;
  57   inside_paint_recorder_ = other.inside_paint_recorder_;
  58 #endif
  59 }
  60
  61 PaintContext::PaintContext(const PaintContext& other,
  62                            const gfx::Vector2d& offset)
  63     : PaintContext(other) {
  64   offset_ += offset;
  65 }
  66
  67 PaintContext::~PaintContext() {
  68 }
  69
  70 }  // namespace ui