gecko/gfx/thebes/public/gfxDWriteFonts.h

117 lines
3.9 KiB
C++

/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 4 -*-
* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is Mozilla Foundation code.
*
* The Initial Developer of the Original Code is Mozilla Foundation.
* Portions created by the Initial Developer are Copyright (C) 2010
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Bas Schouten <bschouten@mozilla.com>
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
#ifndef GFX_WINDOWSDWRITEFONTS_H
#define GFX_WINDOWSDWRITEFONTS_H
#include <dwrite.h>
#include "gfxFont.h"
#include "gfxUserFontSet.h"
#include "cairo-win32.h"
/**
* \brief Class representing a font face for a font entry.
*/
class gfxDWriteFont : public gfxFont
{
public:
gfxDWriteFont(gfxFontEntry *aFontEntry,
const gfxFontStyle *aFontStyle);
~gfxDWriteFont();
static already_AddRefed<gfxDWriteFont>
GetOrMakeFont(gfxFontEntry *aFontEntry,
const gfxFontStyle *aStyle,
PRBool aNeedsBold = PR_FALSE);
virtual nsString GetUniqueName();
virtual const gfxFont::Metrics& GetMetrics();
virtual PRUint32 GetSpaceGlyph();
virtual PRBool SetupCairoFont(gfxContext *aContext);
virtual PRBool IsValid() { return mFontFace != NULL; }
protected:
friend class gfxDWriteFontGroup;
void ComputeMetrics();
cairo_font_face_t *CairoFontFace();
cairo_scaled_font_t *CairoScaledFont();
nsRefPtr<IDWriteFontFace> mFontFace;
cairo_font_face_t *mCairoFontFace;
cairo_scaled_font_t *mCairoScaledFont;
gfxFont::Metrics *mMetrics;
PRBool mNeedsOblique;
};
/**
* \brief Class representing a DWrite windows font group.
*/
class gfxDWriteFontGroup : public gfxFontGroup
{
public:
gfxDWriteFontGroup(const nsAString& aFamilies,
const gfxFontStyle *aStyle,
gfxUserFontSet *aUserFontSet);
virtual ~gfxDWriteFontGroup();
gfxFontGroup *Copy(const gfxFontStyle *aStyle);
/**
* Gets the font at a certain position in the font list, it will
* create this font if it hasn't actually been created yet.
*
* \param i Position in the font list
* \return Object representing the font
*/
virtual gfxDWriteFont *GetFontAt(PRInt32 i);
virtual gfxTextRun *MakeTextRun(const PRUnichar *aString, PRUint32 aLength,
const Parameters *aParams, PRUint32 aFlags);
virtual gfxTextRun *MakeTextRun(const PRUint8 *aString, PRUint32 aLength,
const Parameters *aParams, PRUint32 aFlags);
};
#endif