зеркало из https://github.com/mozilla/pjs.git
129 строки
4.9 KiB
C++
129 строки
4.9 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) 2005-2010
|
|
* the Initial Developer. All Rights Reserved.
|
|
*
|
|
* Contributor(s):
|
|
* Stuart Parmenter <stuart@mozilla.com>
|
|
* Masayuki Nakano <masayuki@d-toybox.com>
|
|
* Mats Palmgren <mats.palmgren@bredband.net>
|
|
* John Daggett <jdaggett@mozilla.com>
|
|
* Jonathan Kew <jfkthame@gmail.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 ***** */
|
|
|
|
//#define FORCE_PR_LOG
|
|
|
|
#include "gfxGDIShaper.h"
|
|
|
|
/**********************************************************************
|
|
*
|
|
* class gfxGDIShaper
|
|
*
|
|
**********************************************************************/
|
|
|
|
PRBool
|
|
gfxGDIShaper::InitTextRun(gfxContext *aContext,
|
|
gfxTextRun *aTextRun,
|
|
const PRUnichar *aString,
|
|
PRUint32 aRunStart,
|
|
PRUint32 aRunLength,
|
|
PRInt32 aRunScript)
|
|
{
|
|
gfxGDIFont *f = static_cast<gfxGDIFont*>(mFont);
|
|
DCFromContext dc(aContext);
|
|
AutoSelectFont fs(dc, f->GetHFONT());
|
|
|
|
nsAutoTArray<WORD,500> glyphArray;
|
|
if (!glyphArray.SetLength(aRunLength)) {
|
|
return PR_FALSE;
|
|
}
|
|
WORD *glyphs = glyphArray.Elements();
|
|
|
|
DWORD ret = ::GetGlyphIndicesW(dc, aString + aRunStart, aRunLength,
|
|
glyphs, GGI_MARK_NONEXISTING_GLYPHS);
|
|
if (ret == GDI_ERROR) {
|
|
return PR_FALSE;
|
|
}
|
|
|
|
for (int k = 0; k < aRunLength; k++) {
|
|
if (glyphs[k] == 0xFFFF)
|
|
return PR_FALSE;
|
|
}
|
|
|
|
SIZE size;
|
|
nsAutoTArray<int,500> partialWidthArray;
|
|
if (!partialWidthArray.SetLength(aRunLength)) {
|
|
return PR_FALSE;
|
|
}
|
|
|
|
BOOL success = ::GetTextExtentExPointI(dc,
|
|
glyphs,
|
|
aRunLength,
|
|
INT_MAX,
|
|
NULL,
|
|
partialWidthArray.Elements(),
|
|
&size);
|
|
if (!success) {
|
|
return PR_FALSE;
|
|
}
|
|
|
|
gfxTextRun::CompressedGlyph g;
|
|
PRUint32 i;
|
|
PRInt32 lastWidth = 0;
|
|
PRUint32 appUnitsPerDevPixel = aTextRun->GetAppUnitsPerDevUnit();
|
|
for (i = 0; i < aRunLength; ++i) {
|
|
PRInt32 advancePixels = partialWidthArray[i] - lastWidth;
|
|
lastWidth = partialWidthArray[i];
|
|
PRInt32 advanceAppUnits = advancePixels*appUnitsPerDevPixel;
|
|
WCHAR glyph = glyphs[i];
|
|
NS_ASSERTION(!gfxFontGroup::IsInvalidChar(
|
|
aTextRun->GetChar(aRunStart + i)),
|
|
"Invalid character detected!");
|
|
if (advanceAppUnits >= 0 &&
|
|
gfxTextRun::CompressedGlyph::IsSimpleAdvance(advanceAppUnits) &&
|
|
gfxTextRun::CompressedGlyph::IsSimpleGlyphID(glyph)) {
|
|
aTextRun->SetSimpleGlyph(aRunStart + i,
|
|
g.SetSimpleGlyph(advanceAppUnits, glyph));
|
|
} else {
|
|
gfxTextRun::DetailedGlyph details;
|
|
details.mGlyphID = glyph;
|
|
details.mAdvance = advanceAppUnits;
|
|
details.mXOffset = 0;
|
|
details.mYOffset = 0;
|
|
aTextRun->SetGlyphs(aRunStart + i,
|
|
g.SetComplex(PR_TRUE, PR_TRUE, 1),
|
|
&details);
|
|
}
|
|
}
|
|
|
|
return PR_TRUE;
|
|
}
|