1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/gfx/thebes/gfxDWriteCommon.h Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,206 @@
1.4 +/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 4 -*-
1.5 + * This Source Code Form is subject to the terms of the Mozilla Public
1.6 + * License, v. 2.0. If a copy of the MPL was not distributed with this
1.7 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
1.8 +
1.9 +#ifndef GFX_DWRITECOMMON_H
1.10 +#define GFX_DWRITECOMMON_H
1.11 +
1.12 +// Mozilla includes
1.13 +#include "nscore.h"
1.14 +#include "nsIServiceManager.h"
1.15 +#include "nsCOMPtr.h"
1.16 +#include "nsAutoPtr.h"
1.17 +#include "cairo-features.h"
1.18 +#include "gfxFontConstants.h"
1.19 +#include "nsTArray.h"
1.20 +#include "gfxWindowsPlatform.h"
1.21 +#include "nsIUUIDGenerator.h"
1.22 +
1.23 +#include <windows.h>
1.24 +#include <dwrite.h>
1.25 +
1.26 +static DWRITE_FONT_STRETCH
1.27 +DWriteFontStretchFromStretch(int16_t aStretch)
1.28 +{
1.29 + switch (aStretch) {
1.30 + case NS_FONT_STRETCH_ULTRA_CONDENSED:
1.31 + return DWRITE_FONT_STRETCH_ULTRA_CONDENSED;
1.32 + case NS_FONT_STRETCH_EXTRA_CONDENSED:
1.33 + return DWRITE_FONT_STRETCH_EXTRA_CONDENSED;
1.34 + case NS_FONT_STRETCH_CONDENSED:
1.35 + return DWRITE_FONT_STRETCH_CONDENSED;
1.36 + case NS_FONT_STRETCH_SEMI_CONDENSED:
1.37 + return DWRITE_FONT_STRETCH_SEMI_CONDENSED;
1.38 + case NS_FONT_STRETCH_NORMAL:
1.39 + return DWRITE_FONT_STRETCH_NORMAL;
1.40 + case NS_FONT_STRETCH_SEMI_EXPANDED:
1.41 + return DWRITE_FONT_STRETCH_SEMI_EXPANDED;
1.42 + case NS_FONT_STRETCH_EXPANDED:
1.43 + return DWRITE_FONT_STRETCH_EXPANDED;
1.44 + case NS_FONT_STRETCH_EXTRA_EXPANDED:
1.45 + return DWRITE_FONT_STRETCH_EXTRA_EXPANDED;
1.46 + case NS_FONT_STRETCH_ULTRA_EXPANDED:
1.47 + return DWRITE_FONT_STRETCH_ULTRA_EXPANDED;
1.48 + default:
1.49 + return DWRITE_FONT_STRETCH_UNDEFINED;
1.50 + }
1.51 +}
1.52 +
1.53 +static int16_t
1.54 +FontStretchFromDWriteStretch(DWRITE_FONT_STRETCH aStretch)
1.55 +{
1.56 + switch (aStretch) {
1.57 + case DWRITE_FONT_STRETCH_ULTRA_CONDENSED:
1.58 + return NS_FONT_STRETCH_ULTRA_CONDENSED;
1.59 + case DWRITE_FONT_STRETCH_EXTRA_CONDENSED:
1.60 + return NS_FONT_STRETCH_EXTRA_CONDENSED;
1.61 + case DWRITE_FONT_STRETCH_CONDENSED:
1.62 + return NS_FONT_STRETCH_CONDENSED;
1.63 + case DWRITE_FONT_STRETCH_SEMI_CONDENSED:
1.64 + return NS_FONT_STRETCH_SEMI_CONDENSED;
1.65 + case DWRITE_FONT_STRETCH_NORMAL:
1.66 + return NS_FONT_STRETCH_NORMAL;
1.67 + case DWRITE_FONT_STRETCH_SEMI_EXPANDED:
1.68 + return NS_FONT_STRETCH_SEMI_EXPANDED;
1.69 + case DWRITE_FONT_STRETCH_EXPANDED:
1.70 + return NS_FONT_STRETCH_EXPANDED;
1.71 + case DWRITE_FONT_STRETCH_EXTRA_EXPANDED:
1.72 + return NS_FONT_STRETCH_EXTRA_EXPANDED;
1.73 + case DWRITE_FONT_STRETCH_ULTRA_EXPANDED:
1.74 + return NS_FONT_STRETCH_ULTRA_EXPANDED;
1.75 + default:
1.76 + return NS_FONT_STRETCH_NORMAL;
1.77 + }
1.78 +}
1.79 +
1.80 +struct ffReferenceKey
1.81 +{
1.82 + FallibleTArray<uint8_t> *mArray;
1.83 + nsID mGUID;
1.84 +};
1.85 +
1.86 +class gfxDWriteFontFileLoader : public IDWriteFontFileLoader
1.87 +{
1.88 +public:
1.89 + gfxDWriteFontFileLoader()
1.90 + {
1.91 + }
1.92 +
1.93 + // IUnknown interface
1.94 + IFACEMETHOD(QueryInterface)(IID const& iid, OUT void** ppObject)
1.95 + {
1.96 + if (iid == __uuidof(IDWriteFontFileLoader)) {
1.97 + *ppObject = static_cast<IDWriteFontFileLoader*>(this);
1.98 + return S_OK;
1.99 + } else if (iid == __uuidof(IUnknown)) {
1.100 + *ppObject = static_cast<IUnknown*>(this);
1.101 + return S_OK;
1.102 + } else {
1.103 + return E_NOINTERFACE;
1.104 + }
1.105 + }
1.106 +
1.107 + IFACEMETHOD_(ULONG, AddRef)()
1.108 + {
1.109 + return 1;
1.110 + }
1.111 +
1.112 + IFACEMETHOD_(ULONG, Release)()
1.113 + {
1.114 + return 1;
1.115 + }
1.116 +
1.117 + // IDWriteFontFileLoader methods
1.118 + /**
1.119 + * Important! Note the key here -has- to be a pointer to an
1.120 + * FallibleTArray<uint8_t>.
1.121 + */
1.122 + virtual HRESULT STDMETHODCALLTYPE
1.123 + CreateStreamFromKey(void const* fontFileReferenceKey,
1.124 + UINT32 fontFileReferenceKeySize,
1.125 + OUT IDWriteFontFileStream** fontFileStream);
1.126 +
1.127 + /**
1.128 + * Gets the singleton loader instance. Note that when using this font
1.129 + * loader, the key must be a pointer to an FallibleTArray<uint8_t>. This
1.130 + * array will be empty when the function returns.
1.131 + */
1.132 + static IDWriteFontFileLoader* Instance()
1.133 + {
1.134 + if (!mInstance) {
1.135 + mInstance = new gfxDWriteFontFileLoader();
1.136 + gfxWindowsPlatform::GetPlatform()->GetDWriteFactory()->
1.137 + RegisterFontFileLoader(mInstance);
1.138 + }
1.139 + return mInstance;
1.140 + }
1.141 +
1.142 +private:
1.143 + static IDWriteFontFileLoader* mInstance;
1.144 +};
1.145 +
1.146 +class gfxDWriteFontFileStream MOZ_FINAL : public IDWriteFontFileStream
1.147 +{
1.148 +public:
1.149 + /**
1.150 + * Used by the FontFileLoader to create a new font stream,
1.151 + * this font stream is created from data in memory. The memory
1.152 + * passed may be released after object creation, it will be
1.153 + * copied internally.
1.154 + *
1.155 + * @param aData Font data
1.156 + */
1.157 + gfxDWriteFontFileStream(FallibleTArray<uint8_t> *aData);
1.158 + ~gfxDWriteFontFileStream();
1.159 +
1.160 + // IUnknown interface
1.161 + IFACEMETHOD(QueryInterface)(IID const& iid, OUT void** ppObject)
1.162 + {
1.163 + if (iid == __uuidof(IDWriteFontFileStream)) {
1.164 + *ppObject = static_cast<IDWriteFontFileStream*>(this);
1.165 + return S_OK;
1.166 + } else if (iid == __uuidof(IUnknown)) {
1.167 + *ppObject = static_cast<IUnknown*>(this);
1.168 + return S_OK;
1.169 + } else {
1.170 + return E_NOINTERFACE;
1.171 + }
1.172 + }
1.173 +
1.174 + IFACEMETHOD_(ULONG, AddRef)()
1.175 + {
1.176 + NS_PRECONDITION(int32_t(mRefCnt) >= 0, "illegal refcnt");
1.177 + ++mRefCnt;
1.178 + return mRefCnt;
1.179 + }
1.180 +
1.181 + IFACEMETHOD_(ULONG, Release)()
1.182 + {
1.183 + NS_PRECONDITION(0 != mRefCnt, "dup release");
1.184 + --mRefCnt;
1.185 + if (mRefCnt == 0) {
1.186 + delete this;
1.187 + return 0;
1.188 + }
1.189 + return mRefCnt;
1.190 + }
1.191 +
1.192 + // IDWriteFontFileStream methods
1.193 + virtual HRESULT STDMETHODCALLTYPE ReadFileFragment(void const** fragmentStart,
1.194 + UINT64 fileOffset,
1.195 + UINT64 fragmentSize,
1.196 + OUT void** fragmentContext);
1.197 +
1.198 + virtual void STDMETHODCALLTYPE ReleaseFileFragment(void* fragmentContext);
1.199 +
1.200 + virtual HRESULT STDMETHODCALLTYPE GetFileSize(OUT UINT64* fileSize);
1.201 +
1.202 + virtual HRESULT STDMETHODCALLTYPE GetLastWriteTime(OUT UINT64* lastWriteTime);
1.203 +
1.204 +private:
1.205 + FallibleTArray<uint8_t> mData;
1.206 + nsAutoRefCnt mRefCnt;
1.207 +};
1.208 +
1.209 +#endif /* GFX_DWRITECOMMON_H */
