| // Copyright 2015 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 "ui/compositor/transform_recorder.h" |
| |
| #include "cc/paint/display_item_list.h" |
| #include "cc/paint/paint_op_buffer.h" |
| #include "ui/compositor/paint_context.h" |
| |
| namespace ui { |
| |
| TransformRecorder::TransformRecorder(const PaintContext& context) |
| : context_(context), transformed_(false) {} |
| |
| TransformRecorder::~TransformRecorder() { |
| if (!transformed_) |
| return; |
| |
| context_.list_->StartPaint(); |
| context_.list_->push<cc::RestoreOp>(); |
| context_.list_->EndPaintOfPairedEnd(); |
| } |
| |
| void TransformRecorder::Transform(const gfx::Transform& transform) { |
| DCHECK(!transformed_); |
| if (transform.IsIdentity()) |
| return; |
| |
| context_.list_->StartPaint(); |
| context_.list_->push<cc::SaveOp>(); |
| context_.list_->push<cc::ConcatOp>(static_cast<SkMatrix>(transform.matrix())); |
| context_.list_->EndPaintOfPairedBegin(); |
| |
| transformed_ = true; |
| } |
| |
| } // namespace ui |