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- // 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 BUILDFLAG(IS_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 COMPONENT_EXPORT(PRINTING_METAFILE) 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;
- bool ShouldCopySharedMemoryRegionData() const override;
- mojom::MetafileDataType GetDataType() const override;
- gfx::Rect GetPageBounds(unsigned int page_number) const override;
- unsigned int GetPageCount() const override;
- printing::NativeDrawingContext context() const override;
- #if BUILDFLAG(IS_WIN)
- bool Playback(printing::NativeDrawingContext hdc,
- const RECT* rect) const override;
- bool SafePlayback(printing::NativeDrawingContext hdc) const override;
- #elif BUILDFLAG(IS_MAC)
- bool RenderPage(unsigned int page_number,
- printing::NativeDrawingContext context,
- const CGRect& rect,
- bool autorotate,
- bool fit_to_page) const override;
- #endif
- #if BUILDFLAG(IS_ANDROID)
- bool SaveToFileDescriptor(int fd) const override;
- #else
- bool SaveTo(base::File* file) const override;
- #endif // BUILDFLAG(IS_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_
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