gecko/gfx/thebes/public/gfxOS2Fonts.h

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/* vim: set sw=4 sts=4 et cin: */
/* ***** 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 OS/2 code in Thebes.
*
* The Initial Developer of the Original Code is
* Peter Weilbacher <mozilla@Weilbacher.org>.
* Portions created by the Initial Developer are Copyright (C) 2006
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* IBM Corp. (code inherited from nsFontMetricsOS2 and OS2Uni)
*
* 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_OS2_FONTS_H
#define GFX_OS2_FONTS_H
#include "gfxTypes.h"
#include "gfxFont.h"
#define INCL_GPI
#include <os2.h>
#include <cairo-os2.h>
#include "nsAutoBuffer.h"
#include "nsICharsetConverterManager.h"
class gfxOS2Font : public gfxFont {
public:
gfxOS2Font(const nsAString &aName, const gfxFontStyle *aFontStyle);
virtual ~gfxOS2Font();
virtual const gfxFont::Metrics& GetMetrics();
double GetWidth(HPS aPS, const char* aString, PRUint32 aLength);
double GetWidth(HPS aPS, const PRUnichar* aString, PRUint32 aLength);
protected:
//cairo_font_face_t *CairoFontFace();
//cairo_scaled_font_t *CairoScaledFont();
private:
void ComputeMetrics();
//cairo_font_face_t *mFontFace;
gfxFont::Metrics *mMetrics;
//FATTRS mFAttrs;
};
class THEBES_API gfxOS2FontGroup : public gfxFontGroup {
public:
gfxOS2FontGroup(const nsAString& aFamilies, const gfxFontStyle* aStyle);
virtual ~gfxOS2FontGroup();
virtual gfxFontGroup *Copy(const gfxFontStyle *aStyle) {
NS_ERROR("NOT IMPLEMENTED");
return nsnull;
}
virtual gfxTextRun *MakeTextRun(const PRUnichar* aString, PRUint32 aLength, Parameters* aParams);
virtual gfxTextRun *MakeTextRun(const PRUint8* aString, PRUint32 aLength, Parameters* aParams);
const nsACString& GetGenericFamily() const {
return mGenericFamily;
}
PRUint32 FontListLength() const {
return mFonts.Length();
}
gfxOS2Font *GetFontAt(PRInt32 i) {
return NS_STATIC_CAST(gfxOS2Font*, NS_STATIC_CAST(gfxFont*, mFonts[i]));
}
void AppendFont(gfxOS2Font *aFont) {
mFonts.AppendElement(aFont);
}
PRBool HasFontNamed(const nsAString& aName) const {
PRUint32 len = mFonts.Length();
for (PRUint32 i = 0; i < len; ++i)
if (aName.Equals(mFonts[i]->GetName()))
return PR_TRUE;
return PR_FALSE;
}
protected:
static PRBool MakeFont(const nsAString& fontName,
const nsACString& genericName,
void *closure);
private:
friend class gfxOS2TextRun;
nsCString mGenericFamily;
};
class THEBES_API gfxOS2TextRun {
public:
gfxOS2TextRun(const nsAString& aString, gfxOS2FontGroup *aFontGroup);
gfxOS2TextRun(const nsACString& aString, gfxOS2FontGroup *aFontGroup);
~gfxOS2TextRun();
virtual void Draw(gfxContext *aContext, gfxPoint pt);
virtual gfxFloat Measure(gfxContext *aContext);
virtual void SetSpacing(const nsTArray<gfxFloat>& spacingArray);
virtual const nsTArray<gfxFloat> *const GetSpacing() const;
void SetRightToLeft(PRBool aIsRTL) { mIsRTL = aIsRTL; }
PRBool IsRightToLeft() { return mIsRTL; }
protected:
private:
/* these only return a length measurement if aDraw is PR_FALSE *
* we have an easy and a sophisticated variant */
double MeasureOrDrawFast(gfxContext *aContext, PRBool aDraw, gfxPoint aPt);
double MeasureOrDrawSlow(gfxContext *aContext, PRBool aDraw, gfxPoint aPt);
gfxOS2FontGroup *mGroup;
nsString mString;
nsCString mCString;
const PRPackedBool mIsASCII;
PRPackedBool mIsRTL;
nsTArray<gfxFloat> mSpacing;
double mLength; /* cached */
};
// =============================================================================
// class gfxOS2Uni to handle Unicode on OS/2 (copied from gfx/src/os2)
enum ConverterRequest {
eConv_Encoder,
eConv_Decoder
};
#define CHAR_BUFFER_SIZE 1024
typedef nsAutoBuffer<char, CHAR_BUFFER_SIZE> nsAutoCharBuffer;
typedef nsAutoBuffer<PRUnichar, CHAR_BUFFER_SIZE> nsAutoChar16Buffer;
class gfxOS2Uni {
public:
static nsISupports* GetUconvObject(int CodePage, ConverterRequest aReq);
static void FreeUconvObjects();
private:
static nsICharsetConverterManager* gCharsetManager;
};
nsresult WideCharToMultiByte(int aCodePage,
const PRUnichar* aSrc, PRInt32 aSrcLength,
nsAutoCharBuffer& aResult, PRInt32& aResultLength);
nsresult MultiByteToWideChar(int aCodePage,
const char* aSrc, PRInt32 aSrcLength,
nsAutoChar16Buffer& aResult, PRInt32& aResultLength);
// =============================================================================
#endif /* GFX_OS2_FONTS_H */