| // Copyright (c) 2012 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. |
| |
| #ifndef PRINTING_METAFILE_SKIA_H_ |
| #define PRINTING_METAFILE_SKIA_H_ |
| |
| #include <stdint.h> |
| |
| #include <memory> |
| |
| #include "base/gtest_prod_util.h" |
| #include "build/build_config.h" |
| #include "cc/paint/paint_canvas.h" |
| #include "printing/common/metafile_utils.h" |
| #include "printing/metafile.h" |
| #include "printing/mojom/print.mojom-forward.h" |
| #include "skia/ext/platform_canvas.h" |
| #include "ui/accessibility/ax_tree_update.h" |
| |
| #if defined(OS_WIN) |
| #include <windows.h> |
| #endif |
| |
| namespace base { |
| class UnguessableToken; |
| } // namespace base |
| |
| namespace printing { |
| |
| struct MetafileSkiaData; |
| |
| // This class uses Skia graphics library to generate a PDF or MSKP document. |
| class PRINTING_EXPORT MetafileSkia : public Metafile { |
| public: |
| // Default constructor, for mojom::SkiaDocumentType::kPDF type only. |
| // TODO(weili): we should split up this use case into a different class, see |
| // comments before InitFromData()'s implementation. |
| MetafileSkia(); |
| MetafileSkia(mojom::SkiaDocumentType type, int document_cookie); |
| MetafileSkia(const MetafileSkia&) = delete; |
| MetafileSkia& operator=(const MetafileSkia&) = delete; |
| ~MetafileSkia() override; |
| |
| // Metafile methods. |
| bool Init() override; |
| bool InitFromData(base::span<const uint8_t> data) override; |
| |
| void StartPage(const gfx::Size& page_size, |
| const gfx::Rect& content_area, |
| float scale_factor, |
| mojom::PageOrientation page_orientation) override; |
| bool FinishPage() override; |
| bool FinishDocument() override; |
| |
| uint32_t GetDataSize() const override; |
| bool GetData(void* dst_buffer, uint32_t dst_buffer_size) const override; |
| |
| gfx::Rect GetPageBounds(unsigned int page_number) const override; |
| unsigned int GetPageCount() const override; |
| |
| printing::NativeDrawingContext context() const override; |
| |
| #if defined(OS_WIN) |
| bool Playback(printing::NativeDrawingContext hdc, |
| const RECT* rect) const override; |
| bool SafePlayback(printing::NativeDrawingContext hdc) const override; |
| #elif defined(OS_MAC) |
| bool RenderPage(unsigned int page_number, |
| printing::NativeDrawingContext context, |
| const CGRect& rect, |
| bool autorotate, |
| bool fit_to_page) const override; |
| #endif |
| |
| #if defined(OS_ANDROID) |
| bool SaveToFileDescriptor(int fd) const override; |
| #else |
| bool SaveTo(base::File* file) const override; |
| #endif // defined(OS_ANDROID) |
| |
| // Unlike FinishPage() or FinishDocument(), this is for out-of-process |
| // subframe printing. It will just serialize the content into SkPicture |
| // format and store it as final data. |
| void FinishFrameContent(); |
| |
| // Return a new metafile containing just the current page in draft mode. |
| std::unique_ptr<MetafileSkia> GetMetafileForCurrentPage( |
| mojom::SkiaDocumentType type); |
| |
| // This method calls StartPage and then returns an appropriate |
| // PlatformCanvas implementation bound to the context created by |
| // StartPage or NULL on error. The PaintCanvas pointer that |
| // is returned is owned by this MetafileSkia object and does not |
| // need to be ref()ed or unref()ed. The canvas will remain valid |
| // until FinishPage() or FinishDocument() is called. |
| cc::PaintCanvas* GetVectorCanvasForNewPage( |
| const gfx::Size& page_size, |
| const gfx::Rect& content_area, |
| float scale_factor, |
| mojom::PageOrientation page_orientation); |
| |
| // This is used for painting content of out-of-process subframes. |
| // For such a subframe, since the content is in another process, we create a |
| // place holder picture now, and replace it with actual content by pdf |
| // compositor service later. |
| uint32_t CreateContentForRemoteFrame( |
| const gfx::Rect& rect, |
| const base::UnguessableToken& render_proxy_token); |
| |
| int GetDocumentCookie() const; |
| const ContentToProxyTokenMap& GetSubframeContentInfo() const; |
| |
| void UtilizeTypefaceContext(ContentProxySet* typeface_content_info); |
| |
| const ui::AXTreeUpdate& accessibility_tree() const { |
| return accessibility_tree_; |
| } |
| ui::AXTreeUpdate& accessibility_tree() { return accessibility_tree_; } |
| |
| private: |
| FRIEND_TEST_ALL_PREFIXES(MetafileSkiaTest, TestFrameContent); |
| FRIEND_TEST_ALL_PREFIXES(MetafileSkiaTest, TestMultiPictureDocumentTypefaces); |
| |
| // The following three functions are used for tests only. |
| void AppendPage(const SkSize& page_size, sk_sp<cc::PaintRecord> record); |
| void AppendSubframeInfo(uint32_t content_id, |
| const base::UnguessableToken& proxy_token, |
| sk_sp<SkPicture> subframe_pic_holder); |
| SkStreamAsset* GetPdfData() const; |
| |
| // Callback function used during page content drawing to replace a custom |
| // data holder with corresponding place holder SkPicture. |
| void CustomDataToSkPictureCallback(SkCanvas* canvas, uint32_t content_id); |
| |
| std::unique_ptr<MetafileSkiaData> data_; |
| |
| ui::AXTreeUpdate accessibility_tree_; |
| }; |
| |
| } // namespace printing |
| |
| #endif // PRINTING_METAFILE_SKIA_H_ |