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/*
* Copyright 2016 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#ifndef SkSVGDOM_DEFINED
#define SkSVGDOM_DEFINED
#include "include/core/SkFontMgr.h"
#include "include/core/SkRefCnt.h"
#include "include/core/SkSize.h"
#include "include/private/base/SkAPI.h"
#include "modules/skresources/include/SkResources.h"
#include "modules/skshaper/include/SkShaper_factory.h"
#include "modules/svg/include/SkSVGIDMapper.h"
#include "modules/svg/include/SkSVGSVG.h"
class SkCanvas;
class SkSVGNode;
class SkStream;
struct SkSVGPresentationContext;
class SK_API SkSVGDOM : public SkRefCnt {
public:
class Builder final {
public:
/**
* Specify a font manager for loading fonts (e.g. from the system) to render <text>
* SVG nodes.
* If this is not set, but a font is required as part of rendering, the text will
* not be displayed.
*/
Builder& setFontManager(sk_sp<SkFontMgr>);
/**
* Specify a resource provider for loading images etc.
*/
Builder& setResourceProvider(sk_sp<skresources::ResourceProvider>);
/**
* Specify the callbacks for dealing with shaping text. See also
* modules/skshaper/utils/FactoryHelpers.h
*/
Builder& setTextShapingFactory(sk_sp<SkShapers::Factory>);
sk_sp<SkSVGDOM> make(SkStream&) const;
private:
sk_sp<SkFontMgr> fFontMgr;
sk_sp<skresources::ResourceProvider> fResourceProvider;
sk_sp<SkShapers::Factory> fTextShapingFactory;
};
static sk_sp<SkSVGDOM> MakeFromStream(SkStream& str) {
return Builder().make(str);
}
/**
* Returns the root (outermost) SVG element.
*/
SkSVGSVG* getRoot() const { return fRoot.get(); }
/**
* Specify a "container size" for the SVG dom.
*
* This is used to resolve the initial viewport when the root SVG width/height are specified
* in relative units.
*
* If the root dimensions are in absolute units, then the container size has no effect since
* the initial viewport is fixed.
*/
void setContainerSize(const SkSize&);
/**
* DEPRECATED: use getRoot()->intrinsicSize() to query the root element intrinsic size.
*
* Returns the SVG dom container size.
*
* If the client specified a container size via setContainerSize(), then the same size is
* returned.
*
* When unspecified by clients, this returns the intrinsic size of the root element, as defined
* by its width/height attributes. If either width or height is specified in relative units
* (e.g. "100%"), then the corresponding intrinsic size dimension is zero.
*/
const SkSize& containerSize() const;
// Returns the node with the given id, or nullptr if not found.
sk_sp<SkSVGNode>* findNodeById(const char* id);
void render(SkCanvas*) const;
/** Render the node with the given id as if it were the only child of the root. */
void renderNode(SkCanvas*, SkSVGPresentationContext&, const char* id) const;
private:
SkSVGDOM(sk_sp<SkSVGSVG>,
sk_sp<SkFontMgr>,
sk_sp<skresources::ResourceProvider>,
SkSVGIDMapper&&,
sk_sp<SkShapers::Factory>);
const sk_sp<SkSVGSVG> fRoot;
const sk_sp<SkFontMgr> fFontMgr;
const sk_sp<SkShapers::Factory> fTextShapingFactory;
const sk_sp<skresources::ResourceProvider> fResourceProvider;
const SkSVGIDMapper fIDMapper;
SkSize fContainerSize;
};
#endif // SkSVGDOM_DEFINED
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