/* -*- 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_PLATFORM_GTK_H

#define GFX_PLATFORM_GTK_H

#include "gfxPlatform.h"

#include "nsAutoRef.h"

#include "nsTArray.h"

#include "mozilla/gfx/gfxVars.h"

#ifdef MOZ_X11

struct _XDisplay;

typedef struct _XDisplay Display;

#endif // MOZ_X11

namespace mozilla {

    namespace dom {

        class SystemFontListEntry;

    };

};

class gfxPlatformGtk : public gfxPlatform {

public:

    gfxPlatformGtk();

    virtual ~gfxPlatformGtk();

    static gfxPlatformGtk *GetPlatform() {

        return (gfxPlatformGtk*) gfxPlatform::GetPlatform();

    }

    void ReadSystemFontList(

        InfallibleTArray<mozilla::dom::SystemFontListEntry>* retValue) override;

    virtual already_AddRefed<gfxASurface>

      CreateOffscreenSurface(const IntSize& aSize,

                             gfxImageFormat aFormat) override;

    virtual nsresult GetFontList(nsAtom *aLangGroup,

                                 const nsACString& aGenericFamily,

                                 nsTArray<nsString>& aListOfFonts) override;

    virtual nsresult UpdateFontList() override;

    virtual void

    GetCommonFallbackFonts(uint32_t aCh, uint32_t aNextCh,

                           Script aRunScript,

                           nsTArray<const char*>& aFontList) override;

    virtual gfxPlatformFontList* CreatePlatformFontList() override;

    gfxFontGroup*

    CreateFontGroup(const mozilla::FontFamilyList& aFontFamilyList,

                    const gfxFontStyle *aStyle,

                    gfxTextPerfMetrics* aTextPerf,

                    gfxUserFontSet *aUserFontSet,

                    gfxFloat aDevToCssSize) override;

    /**

     * Calls XFlush if xrender is enabled.

     */

    virtual void FlushContentDrawing() override;

    FT_Library GetFTLibrary() override;

    static int32_t GetFontScaleDPI();

    static double  GetFontScaleFactor();

#ifdef MOZ_X11

    virtual void GetAzureBackendInfo(mozilla::widget::InfoObject &aObj) override {

      gfxPlatform::GetAzureBackendInfo(aObj);

      aObj.DefineProperty("CairoUseXRender", mozilla::gfx::gfxVars::UseXRender());

    }

#endif

    bool UseImageOffscreenSurfaces();

    virtual gfxImageFormat GetOffscreenFormat() override;

    bool SupportsApzWheelInput() const override {

      return true;

    }

    void FontsPrefsChanged(const char *aPref) override;

    // maximum number of fonts to substitute for a generic

    uint32_t MaxGenericSubstitions();

    bool SupportsPluginDirectBitmapDrawing() override {

      return true;

    }

    bool AccelerateLayersByDefault() override;

#ifdef MOZ_X11

    already_AddRefed<mozilla::gfx::VsyncSource> CreateHardwareVsyncSource() override;

#endif

#ifdef MOZ_X11

    Display* GetCompositorDisplay() {

      return mCompositorDisplay;

    }

#endif // MOZ_X11

#ifdef MOZ_WAYLAND

    void SetWaylandLastVsync(uint32_t aVsyncTimestamp) {

      mWaylandLastVsyncTimestamp = aVsyncTimestamp;

    }

    int64_t GetWaylandLastVsync() {

      return mWaylandLastVsyncTimestamp;

    }

    void SetWaylandFrameDelay(int64_t aFrameDelay) {

      mWaylandFrameDelay = aFrameDelay;

    }

    int64_t GetWaylandFrameDelay() {

      return mWaylandFrameDelay;

    }

#endif

protected:

    bool CheckVariationFontSupport() override;

    int8_t mMaxGenericSubstitutions;

private:

    virtual void GetPlatformCMSOutputProfile(void *&mem,

                                             size_t &size) override;

#ifdef MOZ_X11

    Display* mCompositorDisplay;

#endif

#ifdef MOZ_WAYLAND

    int64_t  mWaylandLastVsyncTimestamp;

    int64_t  mWaylandFrameDelay;

#endif

};

#endif /* GFX_PLATFORM_GTK_H */