ab1c13864d
Add INHERITED declarations to class declarations that prevent compilation with the flag. Remove SK_DEFINE_INST_COUNT from all class implementations. Instead, use function-local static variables in the reference count helper classes to create the global instances to store the needed info. The accessor functions are defined inline in the helper classes, so definitions are not needed. The initialization point of the variables should be as well defined as previously. Remove SK_DECLARE_INST_COUNT_TEMPLATE and use SK_DECLARE_INST_COUNT instead. This avoids possible future compilation errors further. For SK_ENABLE_INST_COUNT=0 compilation, add an empty static member function to all classes that use SK_DECLARE_INST_COUNT and SK_DECLARE_INST_COUNT_ROOT macros. The function ensures that classes contain public INHERITED typedef. This member function seems to be compiled away. This shouĺd ensure that part of the compilation errors are caught earlier. Also adds DSK_DECLARE_INST_COUNT to few SkPDFDict subclasses. R=robertphillips@google.com, richardlin@chromium.org, bsalomon@google.com Author: kkinnunen@nvidia.com Review URL: https://codereview.chromium.org/98703002 git-svn-id: http://skia.googlecode.com/svn/trunk@12501 2bbb7eff-a529-9590-31e7-b0007b416f81
113 lines
3.9 KiB
C++
113 lines
3.9 KiB
C++
/*
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* Copyright 2013 Google Inc.
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*
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#ifndef SkFontConfigInterface_DEFINED
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#define SkFontConfigInterface_DEFINED
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#include "SkDataTable.h"
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#include "SkFontStyle.h"
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#include "SkRefCnt.h"
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#include "SkTArray.h"
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#include "SkTypeface.h"
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/**
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* \class SkFontConfigInterface
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*
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* Provides SkFontHost clients with access to fontconfig services. They will
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* access the global instance found in RefGlobal().
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*/
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class SK_API SkFontConfigInterface : public SkRefCnt {
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public:
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SK_DECLARE_INST_COUNT(SkFontConfigInterface)
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/**
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* Returns the global SkFontConfigInterface instance, and if it is not
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* NULL, calls ref() on it. The caller must balance this with a call to
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* unref().
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*/
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static SkFontConfigInterface* RefGlobal();
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/**
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* Replace the current global instance with the specified one, safely
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* ref'ing the new instance, and unref'ing the previous. Returns its
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* parameter (the new global instance).
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*/
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static SkFontConfigInterface* SetGlobal(SkFontConfigInterface*);
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/**
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* This should be treated as private to the impl of SkFontConfigInterface.
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* Callers should not change or expect any particular values. It is meant
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* to be a union of possible storage types to aid the impl.
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*/
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struct FontIdentity {
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FontIdentity() : fID(0), fTTCIndex(0) {}
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bool operator==(const FontIdentity& other) const {
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return fID == other.fID &&
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fTTCIndex == other.fTTCIndex &&
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fString == other.fString;
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}
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bool operator!=(const FontIdentity& other) const {
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return !(*this == other);
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}
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uint32_t fID;
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int32_t fTTCIndex;
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SkString fString;
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SkFontStyle fStyle;
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// If buffer is NULL, just return the number of bytes that would have
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// been written. Will pad contents to a multiple of 4.
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size_t writeToMemory(void* buffer = NULL) const;
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// Recreate from a flattened buffer, returning the number of bytes read.
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size_t readFromMemory(const void* buffer, size_t length);
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};
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/**
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* Given a familyName and style, find the best match.
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*
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* If a match is found, return true and set its outFontIdentifier.
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* If outFamilyName is not null, assign the found familyName to it
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* (which may differ from the requested familyName).
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* If outStyle is not null, assign the found style to it
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* (which may differ from the requested style).
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*
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* If a match is not found, return false, and ignore all out parameters.
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*/
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virtual bool matchFamilyName(const char familyName[],
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SkTypeface::Style requested,
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FontIdentity* outFontIdentifier,
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SkString* outFamilyName,
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SkTypeface::Style* outStyle) = 0;
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/**
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* Given a FontRef, open a stream to access its data, or return null
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* if the FontRef's data is not available. The caller is responsible for
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* calling stream->unref() when it is done accessing the data.
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*/
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virtual SkStream* openStream(const FontIdentity&) = 0;
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/**
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* Return a singleton instance of a direct subclass that calls into
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* libfontconfig. This does not affect the refcnt of the returned instance.
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*/
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static SkFontConfigInterface* GetSingletonDirectInterface();
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// New APIS, which have default impls for now (which do nothing)
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virtual SkDataTable* getFamilyNames() { return SkDataTable::NewEmpty(); }
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virtual bool matchFamilySet(const char inFamilyName[],
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SkString* outFamilyName,
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SkTArray<FontIdentity>*) {
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return false;
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}
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typedef SkRefCnt INHERITED;
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};
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#endif
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