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/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 4 -*-
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef GFX_DWRITECOMMON_H
#define GFX_DWRITECOMMON_H
// Mozilla includes
#include "nscore.h"
#include "nsIServiceManager.h"
#include "nsCOMPtr.h"
#include "cairo-features.h"
#include "gfxFontConstants.h"
#include "nsTArray.h"
#include "gfxWindowsPlatform.h"
#include "nsIUUIDGenerator.h"
#include <windows.h>
#include <dwrite.h>
static inline DWRITE_FONT_STRETCH
DWriteFontStretchFromStretch(int16_t aStretch)
{
switch (aStretch) {
case NS_FONT_STRETCH_ULTRA_CONDENSED:
return DWRITE_FONT_STRETCH_ULTRA_CONDENSED;
case NS_FONT_STRETCH_EXTRA_CONDENSED:
return DWRITE_FONT_STRETCH_EXTRA_CONDENSED;
case NS_FONT_STRETCH_CONDENSED:
return DWRITE_FONT_STRETCH_CONDENSED;
case NS_FONT_STRETCH_SEMI_CONDENSED:
return DWRITE_FONT_STRETCH_SEMI_CONDENSED;
case NS_FONT_STRETCH_NORMAL:
return DWRITE_FONT_STRETCH_NORMAL;
case NS_FONT_STRETCH_SEMI_EXPANDED:
return DWRITE_FONT_STRETCH_SEMI_EXPANDED;
case NS_FONT_STRETCH_EXPANDED:
return DWRITE_FONT_STRETCH_EXPANDED;
case NS_FONT_STRETCH_EXTRA_EXPANDED:
return DWRITE_FONT_STRETCH_EXTRA_EXPANDED;
case NS_FONT_STRETCH_ULTRA_EXPANDED:
return DWRITE_FONT_STRETCH_ULTRA_EXPANDED;
default:
return DWRITE_FONT_STRETCH_UNDEFINED;
}
}
static inline int16_t
FontStretchFromDWriteStretch(DWRITE_FONT_STRETCH aStretch)
{
switch (aStretch) {
case DWRITE_FONT_STRETCH_ULTRA_CONDENSED:
return NS_FONT_STRETCH_ULTRA_CONDENSED;
case DWRITE_FONT_STRETCH_EXTRA_CONDENSED:
return NS_FONT_STRETCH_EXTRA_CONDENSED;
case DWRITE_FONT_STRETCH_CONDENSED:
return NS_FONT_STRETCH_CONDENSED;
case DWRITE_FONT_STRETCH_SEMI_CONDENSED:
return NS_FONT_STRETCH_SEMI_CONDENSED;
case DWRITE_FONT_STRETCH_NORMAL:
return NS_FONT_STRETCH_NORMAL;
case DWRITE_FONT_STRETCH_SEMI_EXPANDED:
return NS_FONT_STRETCH_SEMI_EXPANDED;
case DWRITE_FONT_STRETCH_EXPANDED:
return NS_FONT_STRETCH_EXPANDED;
case DWRITE_FONT_STRETCH_EXTRA_EXPANDED:
return NS_FONT_STRETCH_EXTRA_EXPANDED;
case DWRITE_FONT_STRETCH_ULTRA_EXPANDED:
return NS_FONT_STRETCH_ULTRA_EXPANDED;
default:
return NS_FONT_STRETCH_NORMAL;
}
}
struct ffReferenceKey
{
FallibleTArray<uint8_t> *mArray;
nsID mGUID;
};
class gfxDWriteFontFileLoader : public IDWriteFontFileLoader
{
public:
gfxDWriteFontFileLoader()
{
}
// IUnknown interface
IFACEMETHOD(QueryInterface)(IID const& iid, OUT void** ppObject)
{
if (iid == __uuidof(IDWriteFontFileLoader)) {
*ppObject = static_cast<IDWriteFontFileLoader*>(this);
return S_OK;
} else if (iid == __uuidof(IUnknown)) {
*ppObject = static_cast<IUnknown*>(this);
return S_OK;
} else {
return E_NOINTERFACE;
}
}
IFACEMETHOD_(ULONG, AddRef)()
{
return 1;
}
IFACEMETHOD_(ULONG, Release)()
{
return 1;
}
// IDWriteFontFileLoader methods
/**
* Important! Note the key here -has- to be a pointer to a uint64_t.
*/
virtual HRESULT STDMETHODCALLTYPE
CreateStreamFromKey(void const* fontFileReferenceKey,
UINT32 fontFileReferenceKeySize,
OUT IDWriteFontFileStream** fontFileStream);
/**
* Gets the singleton loader instance. Note that when using this font
* loader, the key must be a pointer to a unint64_t.
*/
static IDWriteFontFileLoader* Instance()
{
if (!mInstance) {
mInstance = new gfxDWriteFontFileLoader();
gfxWindowsPlatform::GetPlatform()->GetDWriteFactory()->
RegisterFontFileLoader(mInstance);
}
return mInstance;
}
/**
* Creates a IDWriteFontFile and IDWriteFontFileStream from aFontData.
* aFontData will be empty on return as it swaps out the data.
*
* @param aFontData the font data for the custom font file
* @param aFontFile out param for the created font file
* @param aFontFileStream out param for the corresponding stream
* @return HRESULT of internal calls
*/
static HRESULT CreateCustomFontFile(FallibleTArray<uint8_t>& aFontData,
IDWriteFontFile** aFontFile,
IDWriteFontFileStream** aFontFileStream);
private:
static IDWriteFontFileLoader* mInstance;
};
#endif /* GFX_DWRITECOMMON_H */
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