1 /* 2 * Copyright 2016 Google Inc. 3 * 4 * Use of this source code is governed by a BSD-style license that can be 5 * found in the LICENSE file. 6 */ 7 8 #ifndef SkSVGDOM_DEFINED 9 #define SkSVGDOM_DEFINED 10 11 #include "include/core/SkFontMgr.h" 12 #include "include/core/SkRefCnt.h" 13 #include "include/core/SkSize.h" 14 #include "include/private/SkTemplates.h" 15 #include "modules/skresources/include/SkResources.h" 16 #include "modules/svg/include/SkSVGIDMapper.h" 17 18 class SkCanvas; 19 class SkDOM; 20 class SkStream; 21 class SkSVGNode; 22 class SkSVGSVG; 23 24 class SkSVGDOM : public SkRefCnt { 25 public: 26 class Builder final { 27 public: 28 /** 29 * Specify a font manager for loading SVG fonts. 30 */ 31 Builder& setFontManager(sk_sp<SkFontMgr>); 32 33 /** 34 * Specify a resource provider for loading images etc. 35 */ 36 Builder& setResourceProvider(sk_sp<skresources::ResourceProvider>); 37 38 sk_sp<SkSVGDOM> make(SkStream&) const; 39 40 private: 41 sk_sp<SkFontMgr> fFontMgr; 42 sk_sp<skresources::ResourceProvider> fResourceProvider; 43 }; 44 MakeFromStream(SkStream & str)45 static sk_sp<SkSVGDOM> MakeFromStream(SkStream& str) { 46 return Builder().make(str); 47 } 48 49 /** 50 * Returns the root (outermost) SVG element. 51 */ getRoot()52 SkSVGSVG* getRoot() const { return fRoot.get(); } 53 54 /** 55 * Specify a "container size" for the SVG dom. 56 * 57 * This is used to resolve the initial viewport when the root SVG width/height are specified 58 * in relative units. 59 * 60 * If the root dimensions are in absolute units, then the container size has no effect since 61 * the initial viewport is fixed. 62 */ 63 void setContainerSize(const SkSize&); 64 65 /** 66 * DEPRECATED: use getRoot()->intrinsicSize() to query the root element intrinsic size. 67 * 68 * Returns the SVG dom container size. 69 * 70 * If the client specified a container size via setContainerSize(), then the same size is 71 * returned. 72 * 73 * When unspecified by clients, this returns the intrinsic size of the root element, as defined 74 * by its width/height attributes. If either width or height is specified in relative units 75 * (e.g. "100%"), then the corresponding intrinsic size dimension is zero. 76 */ 77 const SkSize& containerSize() const; 78 79 // Returns the node with the given id, or nullptr if not found. 80 sk_sp<SkSVGNode>* findNodeById(const char* id); 81 82 void render(SkCanvas*) const; 83 84 private: 85 SkSVGDOM(sk_sp<SkSVGSVG>, sk_sp<SkFontMgr>, sk_sp<skresources::ResourceProvider>, 86 SkSVGIDMapper&&); 87 88 const sk_sp<SkSVGSVG> fRoot; 89 const sk_sp<SkFontMgr> fFontMgr; 90 const sk_sp<skresources::ResourceProvider> fResourceProvider; 91 const SkSVGIDMapper fIDMapper; 92 93 SkSize fContainerSize; 94 }; 95 96 #endif // SkSVGDOM_DEFINED 97