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- // 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"
- #include "ui/gfx/geometry/transform.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>(transform.GetMatrixAsSkM44());
- context_.list_->EndPaintOfPairedBegin();
- transformed_ = true;
- }
- } // namespace ui
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