DXR is a code search and navigation tool aimed at making sense of large projects. It supports full-text and regex searches as well as structural queries.

Implementation

Mercurial (5b81998bb7ab)

VCS Links

Line Code
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283
/* -*- 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_WINDOWS_PLATFORM_H
#define GFX_WINDOWS_PLATFORM_H


/**
 * XXX to get CAIRO_HAS_D2D_SURFACE, CAIRO_HAS_DWRITE_FONT
 * and cairo_win32_scaled_font_select_font
 */
#include "cairo-win32.h"

#include "gfxFontUtils.h"
#include "gfxWindowsSurface.h"
#include "gfxFont.h"
#ifdef CAIRO_HAS_DWRITE_FONT
#include "gfxDWriteFonts.h"
#endif
#include "gfxPlatform.h"
#include "gfxContext.h"

#include "nsTArray.h"
#include "nsDataHashtable.h"

#include <windows.h>
#include <objbase.h>

class nsIMemoryMultiReporter;

// Utility to get a Windows HDC from a thebes context,
// used by both GDI and Uniscribe font shapers
struct DCFromContext {
    DCFromContext(gfxContext *aContext) {
        dc = NULL;
        nsRefPtr<gfxASurface> aSurface = aContext->CurrentSurface();
        NS_ASSERTION(aSurface, "DCFromContext: null surface");
        if (aSurface &&
            (aSurface->GetType() == gfxASurface::SurfaceTypeWin32 ||
             aSurface->GetType() == gfxASurface::SurfaceTypeWin32Printing))
        {
            dc = static_cast<gfxWindowsSurface*>(aSurface.get())->GetDC();
            needsRelease = false;
            SaveDC(dc);
            cairo_scaled_font_t* scaled =
                cairo_get_scaled_font(aContext->GetCairo());
            cairo_win32_scaled_font_select_font(scaled, dc);
        }
        if (!dc) {
            dc = GetDC(NULL);
            SetGraphicsMode(dc, GM_ADVANCED);
            needsRelease = true;
        }
    }

    ~DCFromContext() {
        if (needsRelease) {
            ReleaseDC(NULL, dc);
        } else {
            RestoreDC(dc, -1);
        }
    }

    operator HDC () {
        return dc;
    }

    HDC dc;
    bool needsRelease;
};

// ClearType parameters set by running ClearType tuner
struct ClearTypeParameterInfo {
    ClearTypeParameterInfo() :
        gamma(-1), pixelStructure(-1), clearTypeLevel(-1), enhancedContrast(-1)
    { }

    nsString    displayName;  // typically just 'DISPLAY1'
    int32_t     gamma;
    int32_t     pixelStructure;
    int32_t     clearTypeLevel;
    int32_t     enhancedContrast;
};

class THEBES_API gfxWindowsPlatform : public gfxPlatform {
public:
    enum TextRenderingMode {
        TEXT_RENDERING_NO_CLEARTYPE,
        TEXT_RENDERING_NORMAL,
        TEXT_RENDERING_GDI_CLASSIC,
        TEXT_RENDERING_COUNT
    };

    gfxWindowsPlatform();
    virtual ~gfxWindowsPlatform();
    static gfxWindowsPlatform *GetPlatform() {
        return (gfxWindowsPlatform*) gfxPlatform::GetPlatform();
    }

    virtual gfxPlatformFontList* CreatePlatformFontList();

    already_AddRefed<gfxASurface> CreateOffscreenSurface(const gfxIntSize& size,
                                                         gfxASurface::gfxContentType contentType);
    virtual already_AddRefed<gfxASurface>
      CreateOffscreenImageSurface(const gfxIntSize& aSize,
                                  gfxASurface::gfxContentType aContentType);

    virtual mozilla::RefPtr<mozilla::gfx::ScaledFont>
      GetScaledFontForFont(mozilla::gfx::DrawTarget* aTarget, gfxFont *aFont);
    virtual already_AddRefed<gfxASurface>
      GetThebesSurfaceForDrawTarget(mozilla::gfx::DrawTarget *aTarget);

    enum RenderMode {
        /* Use GDI and windows surfaces */
        RENDER_GDI = 0,

        /* Use 32bpp image surfaces and call StretchDIBits */
        RENDER_IMAGE_STRETCH32,

        /* Use 32bpp image surfaces, and do 32->24 conversion before calling StretchDIBits */
        RENDER_IMAGE_STRETCH24,

        /* Use Direct2D rendering */
        RENDER_DIRECT2D,

        /* max */
        RENDER_MODE_MAX
    };

    RenderMode GetRenderMode() { return mRenderMode; }
    void SetRenderMode(RenderMode rmode) { mRenderMode = rmode; }

    /**
     * Updates render mode with relation to the current preferences and
     * available devices.
     */
    void UpdateRenderMode();

    /**
     * Verifies a D2D device is present and working, will attempt to create one
     * it is non-functional or non-existant.
     *
     * \param aAttemptForce Attempt to force D2D cairo device creation by using
     * cairo device creation routines.
     */
    void VerifyD2DDevice(bool aAttemptForce);

    HDC GetScreenDC() { return mScreenDC; }

    nsresult GetFontList(nsIAtom *aLangGroup,
                         const nsACString& aGenericFamily,
                         nsTArray<nsString>& aListOfFonts);

    nsresult UpdateFontList();

    virtual void GetCommonFallbackFonts(const uint32_t aCh,
                                        int32_t aRunScript,
                                        nsTArray<const char*>& aFontList);

    nsresult ResolveFontName(const nsAString& aFontName,
                             FontResolverCallback aCallback,
                             void *aClosure, bool& aAborted);

    nsresult GetStandardFamilyName(const nsAString& aFontName, nsAString& aFamilyName);

    gfxFontGroup *CreateFontGroup(const nsAString &aFamilies,
                                  const gfxFontStyle *aStyle,
                                  gfxUserFontSet *aUserFontSet);

    /**
     * Look up a local platform font using the full font face name (needed to support @font-face src local() )
     */
    virtual gfxFontEntry* LookupLocalFont(const gfxProxyFontEntry *aProxyEntry,
                                          const nsAString& aFontName);

    /**
     * Activate a platform font (needed to support @font-face src url() )
     */
    virtual gfxFontEntry* MakePlatformFont(const gfxProxyFontEntry *aProxyEntry,
                                           const uint8_t *aFontData,
                                           uint32_t aLength);

    /**
     * Check whether format is supported on a platform or not (if unclear, returns true)
     */
    virtual bool IsFontFormatSupported(nsIURI *aFontURI, uint32_t aFormatFlags);

    /* Find a FontFamily/FontEntry object that represents a font on your system given a name */
    gfxFontFamily *FindFontFamily(const nsAString& aName);
    gfxFontEntry *FindFontEntry(const nsAString& aName, const gfxFontStyle& aFontStyle);

    bool GetPrefFontEntries(const nsCString& aLangGroup, nsTArray<nsRefPtr<gfxFontEntry> > *array);
    void SetPrefFontEntries(const nsCString& aLangGroup, nsTArray<nsRefPtr<gfxFontEntry> >& array);

    void ClearPrefFonts() { mPrefFonts.Clear(); }

    // ClearType is not always enabled even when available (e.g. Windows XP)
    // if either of these prefs are enabled and apply, use ClearType rendering
    bool UseClearTypeForDownloadableFonts();
    bool UseClearTypeAlways();

    // OS version in 16.16 major/minor form
    // based on http://msdn.microsoft.com/en-us/library/ms724834(VS.85).aspx
    enum {
        kWindowsUnknown = 0,
        kWindowsXP = 0x50001,
        kWindowsServer2003 = 0x50002,
        kWindowsVista = 0x60000,
        kWindows7 = 0x60001,
        kWindows8 = 0x60002
    };

    static int32_t WindowsOSVersion(int32_t *aBuildNum = nullptr);

    static void GetDLLVersion(const PRUnichar *aDLLPath, nsAString& aVersion);

    // returns ClearType tuning information for each display
    static void GetCleartypeParams(nsTArray<ClearTypeParameterInfo>& aParams);

    virtual void FontsPrefsChanged(const char *aPref);

    void SetupClearTypeParams();

#ifdef CAIRO_HAS_DWRITE_FONT
    IDWriteFactory *GetDWriteFactory() { return mDWriteFactory; }
    inline bool DWriteEnabled() { return mUseDirectWrite; }
    inline DWRITE_MEASURING_MODE DWriteMeasuringMode() { return mMeasuringMode; }
    IDWriteTextAnalyzer *GetDWriteAnalyzer() { return mDWriteAnalyzer; }

    IDWriteRenderingParams *GetRenderingParams(TextRenderingMode aRenderMode)
    { return mRenderingParams[aRenderMode]; }
#else
    inline bool DWriteEnabled() { return false; }
#endif
#ifdef CAIRO_HAS_D2D_SURFACE
    cairo_device_t *GetD2DDevice() { return mD2DDevice; }
    ID3D10Device1 *GetD3D10Device() { return mD2DDevice ? cairo_d2d_device_get_device(mD2DDevice) : nullptr; }
#endif

    static bool IsOptimus();
    static bool IsRunningInWindows8Metro();

protected:
    virtual mozilla::gfx::BackendType GetContentBackend()
    {
      return UseAzureContentDrawing() && mRenderMode == RENDER_DIRECT2D ?
               mozilla::gfx::BACKEND_DIRECT2D :
               mozilla::gfx::BACKEND_NONE;
    }

    RenderMode mRenderMode;

    int8_t mUseClearTypeForDownloadableFonts;
    int8_t mUseClearTypeAlways;
    HDC mScreenDC;

private:
    void Init();

    bool mUseDirectWrite;
    bool mUsingGDIFonts;

#ifdef CAIRO_HAS_DWRITE_FONT
    nsRefPtr<IDWriteFactory> mDWriteFactory;
    nsRefPtr<IDWriteTextAnalyzer> mDWriteAnalyzer;
    nsRefPtr<IDWriteRenderingParams> mRenderingParams[TEXT_RENDERING_COUNT];
    DWRITE_MEASURING_MODE mMeasuringMode;
#endif
#ifdef CAIRO_HAS_D2D_SURFACE
    cairo_device_t *mD2DDevice;
#endif

    virtual qcms_profile* GetPlatformCMSOutputProfile();

    // TODO: unify this with mPrefFonts (NB: holds families, not fonts) in gfxPlatformFontList
    nsDataHashtable<nsCStringHashKey, nsTArray<nsRefPtr<gfxFontEntry> > > mPrefFonts;

    nsIMemoryMultiReporter* mGPUAdapterMultiReporter;
};

#endif /* GFX_WINDOWS_PLATFORM_H */