gecko-dev/gfx/thebes/gfxQtPlatform.h

/* -*- 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_QT_H
#define GFX_PLATFORM_QT_H

#include "gfxPlatform.h"
#include "nsAutoRef.h"
#include "nsDataHashtable.h"
#include "nsTArray.h"
#ifdef MOZ_X11
#include "X11/Xlib.h"
#endif

class gfxImageSurface;
class gfxFontconfigUtils;
class QWindow;

class gfxQtPlatform : public gfxPlatform {
public:
    gfxQtPlatform();
    virtual ~gfxQtPlatform();

    static gfxQtPlatform *GetPlatform() {
        return static_cast<gfxQtPlatform*>(gfxPlatform::GetPlatform());
    }

    virtual already_AddRefed<gfxASurface>
      CreateOffscreenSurface(const IntSize& size,
                             gfxContentType contentType) MOZ_OVERRIDE;

    virtual mozilla::TemporaryRef<mozilla::gfx::ScaledFont>
      GetScaledFontForFont(mozilla::gfx::DrawTarget* aTarget, gfxFont *aFont) MOZ_OVERRIDE;

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

    virtual nsresult UpdateFontList() MOZ_OVERRIDE;

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

    virtual gfxFontGroup *CreateFontGroup(const mozilla::FontFamilyList& aFontFamilyList,
                                          const gfxFontStyle *aStyle,
                                          gfxUserFontSet* aUserFontSet) MOZ_OVERRIDE;

    /**
     * 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) MOZ_OVERRIDE;

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

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

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

    static int32_t GetDPI();

    virtual gfxImageFormat GetOffscreenFormat() MOZ_OVERRIDE;
#ifdef MOZ_X11
    static Display* GetXDisplay(QWindow* aWindow = 0);
    static Screen* GetXScreen(QWindow* aWindow = 0);
#endif

    virtual int GetScreenDepth() const MOZ_OVERRIDE;

protected:
    static gfxFontconfigUtils *sFontconfigUtils;

private:
    virtual void GetPlatformCMSOutputProfile(void *&mem, size_t &size) MOZ_OVERRIDE;

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

    int mScreenDepth;
};

#endif /* GFX_PLATFORM_QT_H */