| // 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_PDF_METAFILE_SKIA_H_ |
| #define PRINTING_PDF_METAFILE_SKIA_H_ |
| |
| #include <stdint.h> |
| |
| #include <memory> |
| |
| #include "base/macros.h" |
| #include "build/build_config.h" |
| #include "cc/paint/paint_canvas.h" |
| #include "printing/metafile.h" |
| #include "skia/ext/platform_canvas.h" |
| |
| #if defined(OS_WIN) |
| #include <windows.h> |
| #endif |
| |
| namespace printing { |
| |
| enum SkiaDocumentType { |
| PDF_SKIA_DOCUMENT_TYPE, |
| // MSKP is an experimental, fragile, and diagnostic-only document type. |
| MSKP_SKIA_DOCUMENT_TYPE, |
| }; |
| |
| struct PdfMetafileSkiaData; |
| |
| // This class uses Skia graphics library to generate a PDF document. |
| class PRINTING_EXPORT PdfMetafileSkia : public Metafile { |
| public: |
| explicit PdfMetafileSkia(SkiaDocumentType type); |
| ~PdfMetafileSkia() override; |
| |
| // Metafile methods. |
| bool Init() override; |
| bool InitFromData(const void* src_buffer, size_t src_buffer_size) override; |
| |
| void StartPage(const gfx::Size& page_size, |
| const gfx::Rect& content_area, |
| const float& scale_factor) 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; |
| |
| skia::NativeDrawingContext context() const override; |
| |
| #if defined(OS_WIN) |
| bool SafePlayback(skia::NativeDrawingContext hdc) const override; |
| #endif |
| |
| bool SaveTo(base::File* file) const override; |
| |
| // Return a new metafile containing just the current page in draft mode. |
| std::unique_ptr<PdfMetafileSkia> GetMetafileForCurrentPage( |
| 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 PdfMetafileSkia 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, |
| const float& scale_factor); |
| |
| private: |
| std::unique_ptr<PdfMetafileSkiaData> data_; |
| |
| DISALLOW_COPY_AND_ASSIGN(PdfMetafileSkia); |
| }; |
| |
| } // namespace printing |
| |
| #endif // PRINTING_PDF_METAFILE_SKIA_H_ |