[apple/icu.git] / icuSources / samples / layout / GDIFontInstance.cpp

/*
 *******************************************************************************
 *
 *   Copyright (C) 1999-2008, International Business Machines
 *   Corporation and others.  All Rights Reserved.
 *
 *******************************************************************************
 *   file name:  GDIFontInstance.cpp
 *
 *   created on: 08/09/2000
 *   created by: Eric R. Mader
 */

#include <windows.h>

#include "layout/LETypes.h"
#include "layout/LESwaps.h"
#include "layout/LEFontInstance.h"

#include "GDIFontInstance.h"
#include "sfnt.h"
#include "cmaps.h"

GDISurface::GDISurface(HDC theHDC)
    : fHdc(theHDC), fCurrentFont(NULL)
{
    // nothing else to do
}

GDISurface::~GDISurface()
{
    // nothing to do
}

void GDISurface::setHDC(HDC theHDC)
{
    fHdc         = theHDC;
    fCurrentFont = NULL;
}

void GDISurface::setFont(const GDIFontInstance *font)
{
#if 0
    if (fCurrentFont != font) {
        fCurrentFont = font;
        SelectObject(fHdc, font->getFont());
    }
#else
    SelectObject(fHdc, font->getFont());
#endif
}

void GDISurface::drawGlyphs(const LEFontInstance *font, const LEGlyphID *glyphs, le_int32 count, const float *positions,
    le_int32 x, le_int32 y, le_int32 width, le_int32 height)
{
    TTGlyphID *ttGlyphs = LE_NEW_ARRAY(TTGlyphID, count);
    le_int32  *dx = LE_NEW_ARRAY(le_int32, count);
    float     *ps = LE_NEW_ARRAY(float, count * 2 + 2);
    le_int32   out = 0;
    RECT clip;

    clip.top    = 0;
    clip.left   = 0;
    clip.bottom = height;
    clip.right  = width;

    for (le_int32 g = 0; g < count; g += 1) {
        TTGlyphID ttGlyph = (TTGlyphID) LE_GET_GLYPH(glyphs[g]);

        if (ttGlyph < 0xFFFE) {
            ttGlyphs[out] = ttGlyph;
            dx[out] = (le_int32) (positions[g * 2 + 2] - positions[g * 2]);
            ps[out * 2] = positions[g * 2];
            ps[out * 2 + 1] = positions[g * 2 + 1];
            out += 1;
        }
    }

    le_int32 dyStart, dyEnd;

    setFont((GDIFontInstance *) font);

    dyStart = dyEnd = 0;

    while (dyEnd < out) {
        float yOffset = ps[dyStart * 2 + 1];
        float xOffset = ps[dyStart * 2];

        while (dyEnd < out && yOffset == ps[dyEnd * 2 + 1]) {
            dyEnd += 1;
        }

        ExtTextOut(fHdc, x + (le_int32) xOffset, y + (le_int32) yOffset - font->getAscent(), ETO_CLIPPED | ETO_GLYPH_INDEX, &clip,
            (LPCWSTR) &ttGlyphs[dyStart], dyEnd - dyStart, (INT *) &dx[dyStart]);

        dyStart = dyEnd;
    }

    LE_DELETE_ARRAY(ps);
    LE_DELETE_ARRAY(dx);
    LE_DELETE_ARRAY(ttGlyphs);
}

GDIFontInstance::GDIFontInstance(GDISurface *surface, TCHAR *faceName, le_int16 pointSize, LEErrorCode &status)
    : FontTableCache(), fSurface(surface), fFont(NULL),
      fPointSize(pointSize), fUnitsPerEM(0), fAscent(0), fDescent(0), fLeading(0),
      fDeviceScaleX(1), fDeviceScaleY(1), fMapper(NULL)
{
    LOGFONT lf;
    FLOAT dpiX, dpiY;
    POINT pt;
    OUTLINETEXTMETRIC otm;
    HDC hdc = surface->getHDC();

    if (LE_FAILURE(status)) {
        return;
    }

    SaveDC(hdc);

    SetGraphicsMode(hdc, GM_ADVANCED);
    ModifyWorldTransform(hdc, NULL, MWT_IDENTITY);
    SetViewportOrgEx(hdc, 0, 0, NULL);
    SetWindowOrgEx(hdc, 0, 0, NULL);

    dpiX = (FLOAT) GetDeviceCaps(hdc, LOGPIXELSX);
    dpiY = (FLOAT) GetDeviceCaps(hdc, LOGPIXELSY);

#if 1
    pt.x = (int) (pointSize * dpiX / 72);
    pt.y = (int) (pointSize * dpiY / 72);

    DPtoLP(hdc, &pt, 1);
#else
    pt.x = pt.y = pointSize;
#endif

    lf.lfHeight = - pt.y;
    lf.lfWidth = 0;
    lf.lfEscapement = 0;
    lf.lfOrientation = 0;
    lf.lfWeight = 0;
    lf.lfItalic = 0;
    lf.lfUnderline = 0;
    lf.lfStrikeOut = 0;
    lf.lfCharSet = DEFAULT_CHARSET;
    lf.lfOutPrecision = 0;
    lf.lfClipPrecision = 0;
    lf.lfQuality = 0;
    lf.lfPitchAndFamily = 0;

    lstrcpy(lf.lfFaceName, faceName);

    fFont = CreateFontIndirect(&lf);

    if (fFont == NULL) {
        status = LE_FONT_FILE_NOT_FOUND_ERROR;
        return;
    }

    SelectObject(hdc, fFont);

    UINT ret = GetOutlineTextMetrics(hdc, sizeof otm, &otm);

    if (ret == 0) {
        status = LE_MISSING_FONT_TABLE_ERROR;
        goto restore;
    }

    fUnitsPerEM = otm.otmEMSquare;
    fAscent  = otm.otmTextMetrics.tmAscent;
    fDescent = otm.otmTextMetrics.tmDescent;
    fLeading = otm.otmTextMetrics.tmExternalLeading;

    status = initMapper();

    if (LE_FAILURE(status)) {
        goto restore;
    }

#if 0
    status = initFontTableCache();
#endif

restore:
    RestoreDC(hdc, -1);
}

GDIFontInstance::GDIFontInstance(GDISurface *surface, const char *faceName, le_int16 pointSize, LEErrorCode &status)
    : FontTableCache(), fSurface(surface), fFont(NULL),
      fPointSize(pointSize), fUnitsPerEM(0), fAscent(0), fDescent(0), fLeading(0),
      fDeviceScaleX(1), fDeviceScaleY(1), fMapper(NULL)
{
    LOGFONTA lf;
    FLOAT dpiX, dpiY;
    POINT pt;
    OUTLINETEXTMETRIC otm;
    HDC hdc = surface->getHDC();

    if (LE_FAILURE(status)) {
        return;
    }

    SaveDC(hdc);

    SetGraphicsMode(hdc, GM_ADVANCED);
    ModifyWorldTransform(hdc, NULL, MWT_IDENTITY);
    SetViewportOrgEx(hdc, 0, 0, NULL);
    SetWindowOrgEx(hdc, 0, 0, NULL);

    dpiX = (FLOAT) GetDeviceCaps(hdc, LOGPIXELSX);
    dpiY = (FLOAT) GetDeviceCaps(hdc, LOGPIXELSY);

    fDeviceScaleX = dpiX / 72;
    fDeviceScaleY = dpiY / 72;

#if 1
    pt.x = (int) (pointSize * fDeviceScaleX);
    pt.y = (int) (pointSize * fDeviceScaleY);

    DPtoLP(hdc, &pt, 1);
#else
    pt.x = pt.y = pointSize;
#endif

    lf.lfHeight = - pt.y;
    lf.lfWidth = 0;
    lf.lfEscapement = 0;
    lf.lfOrientation = 0;
    lf.lfWeight = 0;
    lf.lfItalic = 0;
    lf.lfUnderline = 0;
    lf.lfStrikeOut = 0;
    lf.lfCharSet = DEFAULT_CHARSET;
    lf.lfOutPrecision = 0;
    lf.lfClipPrecision = 0;
    lf.lfQuality = 0;
    lf.lfPitchAndFamily = 0;

    strcpy(lf.lfFaceName, faceName);

    fFont = CreateFontIndirectA(&lf);

    if (fFont == NULL) {
        status = LE_FONT_FILE_NOT_FOUND_ERROR;
        return;
    }

    SelectObject(hdc, fFont);

    UINT ret = GetOutlineTextMetrics(hdc, sizeof otm, &otm);

    if (ret != 0) {
        fUnitsPerEM = otm.otmEMSquare;
        fAscent  = otm.otmTextMetrics.tmAscent;
        fDescent = otm.otmTextMetrics.tmDescent;
        fLeading = otm.otmTextMetrics.tmExternalLeading;
    } else {
        const HEADTable *headTable = NULL;
        const HHEATable *hheaTable = NULL;

        // read unitsPerEm from 'head' table
        headTable = (const HEADTable *) readFontTable(LE_HEAD_TABLE_TAG);

        if (headTable == NULL) {
            status = LE_MISSING_FONT_TABLE_ERROR;
            goto restore;
        }

        fUnitsPerEM   = SWAPW(headTable->unitsPerEm);
        freeFontTable((const void *)headTable);

        hheaTable = (HHEATable *) readFontTable(LE_HHEA_TABLE_TAG);

        if (hheaTable == NULL) {
            status = LE_MISSING_FONT_TABLE_ERROR;
            goto restore;
        }

        fAscent  = (le_int32) yUnitsToPoints((float) SWAPW(hheaTable->ascent));
        fDescent = (le_int32) yUnitsToPoints((float) SWAPW(hheaTable->descent));
        fLeading = (le_int32) yUnitsToPoints((float) SWAPW(hheaTable->lineGap));

        freeFontTable((const void *) hheaTable);
    }

    status = initMapper();

    if (LE_FAILURE(status)) {
        goto restore;
    }

#if 0
    status = initFontTableCache();
#endif

restore:
    RestoreDC(hdc, -1);
}

GDIFontInstance::~GDIFontInstance()
{
#if 0
    flushFontTableCache();
    delete[] fTableCache;
#endif

    if (fFont != NULL) {
        // FIXME: call RemoveObject first?
        DeleteObject(fFont);
    }

    delete fMapper;
    fMapper = NULL;
}

LEErrorCode GDIFontInstance::initMapper()
{
    LETag cmapTag = LE_CMAP_TABLE_TAG;
    const CMAPTable *cmap = (const CMAPTable *) readFontTable(cmapTag);

    if (cmap == NULL) {
        return LE_MISSING_FONT_TABLE_ERROR;
    }

    fMapper = CMAPMapper::createUnicodeMapper(cmap);

    if (fMapper == NULL) {
        return LE_MISSING_FONT_TABLE_ERROR;
    }

    return LE_NO_ERROR;
}

const void *GDIFontInstance::getFontTable(LETag tableTag) const
{
    return FontTableCache::find(tableTag);
}

const void *GDIFontInstance::readFontTable(LETag tableTag) const
{
    fSurface->setFont(this);

    HDC   hdc    = fSurface->getHDC();
    DWORD stag   = SWAPL(tableTag);
    DWORD len    = GetFontData(hdc, stag, 0, NULL, 0);
    void *result = NULL;

    if (len != GDI_ERROR) {
        result = LE_NEW_ARRAY(char, len);
        GetFontData(hdc, stag, 0, result, len);
    }

    return result;
}

void GDIFontInstance::getGlyphAdvance(LEGlyphID glyph, LEPoint &advance) const
{
    advance.fX = 0;
    advance.fY = 0;

    if (glyph == 0xFFFE || glyph == 0xFFFF) {
        return;
    }


    GLYPHMETRICS metrics;
    DWORD result;
    MAT2 identity = {{0, 1}, {0, 0}, {0, 0}, {0, 1}};
    HDC hdc = fSurface->getHDC();

    fSurface->setFont(this);

    result = GetGlyphOutline(hdc, glyph, GGO_GLYPH_INDEX | GGO_METRICS, &metrics, 0, NULL, &identity);

    if (result == GDI_ERROR) {
        return;
    }

    advance.fX = metrics.gmCellIncX;
    return;
}

le_bool GDIFontInstance::getGlyphPoint(LEGlyphID glyph, le_int32 pointNumber, LEPoint &point) const
{
#if 0
    hsFixedPoint2 pt;
    le_bool result;

    result = fFontInstance->getGlyphPoint(glyph, pointNumber, pt);

    if (result) {
        point.fX = xUnitsToPoints(pt.fX);
        point.fY = yUnitsToPoints(pt.fY);
    }

    return result;
#else
    return FALSE;
#endif
}
Commit	Line	Data
b75a7d8f A	1	/*
	2	*******************************************************************************
	3	*
46f4442e	4	* Copyright (C) 1999-2008, International Business Machines
b75a7d8f A	5	* Corporation and others. All Rights Reserved.
	6	*
	7	*******************************************************************************
	8	* file name: GDIFontInstance.cpp
	9	*
	10	* created on: 08/09/2000
	11	* created by: Eric R. Mader
	12	*/
	13
	14	#include <windows.h>
	15
	16	#include "layout/LETypes.h"
	17	#include "layout/LESwaps.h"
	18	#include "layout/LEFontInstance.h"
	19
	20	#include "GDIFontInstance.h"
	21	#include "sfnt.h"
	22	#include "cmaps.h"
	23
	24	GDISurface::GDISurface(HDC theHDC)
	25	: fHdc(theHDC), fCurrentFont(NULL)
	26	{
	27	// nothing else to do
	28	}
	29
	30	GDISurface::~GDISurface()
	31	{
	32	// nothing to do
	33	}
	34
	35	void GDISurface::setHDC(HDC theHDC)
	36	{
	37	fHdc = theHDC;
	38	fCurrentFont = NULL;
	39	}
	40
	41	void GDISurface::setFont(const GDIFontInstance *font)
	42	{
	43	#if 0
	44	if (fCurrentFont != font) {
	45	fCurrentFont = font;
	46	SelectObject(fHdc, font->getFont());
	47	}
	48	#else
	49	SelectObject(fHdc, font->getFont());
	50	#endif
	51	}
	52
	53	void GDISurface::drawGlyphs(const LEFontInstance font, const LEGlyphID glyphs, le_int32 count, const float *positions,
	54	le_int32 x, le_int32 y, le_int32 width, le_int32 height)
	55	{
	56	TTGlyphID *ttGlyphs = LE_NEW_ARRAY(TTGlyphID, count);
	57	le_int32 *dx = LE_NEW_ARRAY(le_int32, count);
73c04bcf A	58	float ps = LE_NEW_ARRAY(float, count 2 + 2);
73c04bcf A	59	le_int32 out = 0;
b75a7d8f A	60	RECT clip;
	61
	62	clip.top = 0;
	63	clip.left = 0;
	64	clip.bottom = height;
	65	clip.right = width;
	66
	67	for (le_int32 g = 0; g < count; g += 1) {
73c04bcf A	68	TTGlyphID ttGlyph = (TTGlyphID) LE_GET_GLYPH(glyphs[g]);
	69
	70	if (ttGlyph < 0xFFFE) {
	71	ttGlyphs[out] = ttGlyph;
	72	dx[out] = (le_int32) (positions[g * 2 + 2] - positions[g * 2]);
	73	ps[out * 2] = positions[g * 2];
	74	ps[out * 2 + 1] = positions[g * 2 + 1];
	75	out += 1;
b75a7d8f	76	}
b75a7d8f A	77	}
	78
	79	le_int32 dyStart, dyEnd;
	80
	81	setFont((GDIFontInstance *) font);
	82
	83	dyStart = dyEnd = 0;
	84
73c04bcf A	85	while (dyEnd < out) {
	86	float yOffset = ps[dyStart * 2 + 1];
	87	float xOffset = ps[dyStart * 2];
b75a7d8f	88
73c04bcf	89	while (dyEnd < out && yOffset == ps[dyEnd * 2 + 1]) {
b75a7d8f A	90	dyEnd += 1;
	91	}
	92
	93	ExtTextOut(fHdc, x + (le_int32) xOffset, y + (le_int32) yOffset - font->getAscent(), ETO_CLIPPED \| ETO_GLYPH_INDEX, &clip,
73c04bcf	94	(LPCWSTR) &ttGlyphs[dyStart], dyEnd - dyStart, (INT *) &dx[dyStart]);
b75a7d8f A	95
	96	dyStart = dyEnd;
	97	}
	98
73c04bcf	99	LE_DELETE_ARRAY(ps);
b75a7d8f A	100	LE_DELETE_ARRAY(dx);
	101	LE_DELETE_ARRAY(ttGlyphs);
	102	}
	103
	104	GDIFontInstance::GDIFontInstance(GDISurface surface, TCHAR faceName, le_int16 pointSize, LEErrorCode &status)
	105	: FontTableCache(), fSurface(surface), fFont(NULL),
	106	fPointSize(pointSize), fUnitsPerEM(0), fAscent(0), fDescent(0), fLeading(0),
	107	fDeviceScaleX(1), fDeviceScaleY(1), fMapper(NULL)
	108	{
	109	LOGFONT lf;
	110	FLOAT dpiX, dpiY;
	111	POINT pt;
	112	OUTLINETEXTMETRIC otm;
	113	HDC hdc = surface->getHDC();
	114
	115	if (LE_FAILURE(status)) {
	116	return;
	117	}
	118
	119	SaveDC(hdc);
	120
	121	SetGraphicsMode(hdc, GM_ADVANCED);
	122	ModifyWorldTransform(hdc, NULL, MWT_IDENTITY);
	123	SetViewportOrgEx(hdc, 0, 0, NULL);
	124	SetWindowOrgEx(hdc, 0, 0, NULL);
	125
	126	dpiX = (FLOAT) GetDeviceCaps(hdc, LOGPIXELSX);
	127	dpiY = (FLOAT) GetDeviceCaps(hdc, LOGPIXELSY);
	128
	129	#if 1
	130	pt.x = (int) (pointSize * dpiX / 72);
	131	pt.y = (int) (pointSize * dpiY / 72);
	132
	133	DPtoLP(hdc, &pt, 1);
	134	#else
	135	pt.x = pt.y = pointSize;
	136	#endif
	137
	138	lf.lfHeight = - pt.y;
	139	lf.lfWidth = 0;
	140	lf.lfEscapement = 0;
	141	lf.lfOrientation = 0;
	142	lf.lfWeight = 0;
	143	lf.lfItalic = 0;
	144	lf.lfUnderline = 0;
	145	lf.lfStrikeOut = 0;
	146	lf.lfCharSet = DEFAULT_CHARSET;
	147	lf.lfOutPrecision = 0;
	148	lf.lfClipPrecision = 0;
	149	lf.lfQuality = 0;
	150	lf.lfPitchAndFamily = 0;
	151
	152	lstrcpy(lf.lfFaceName, faceName);
	153
	154	fFont = CreateFontIndirect(&lf);
	155
	156	if (fFont == NULL) {
	157	status = LE_FONT_FILE_NOT_FOUND_ERROR;
	158	return;
	159	}
	160
	161	SelectObject(hdc, fFont);
	162
	163	UINT ret = GetOutlineTextMetrics(hdc, sizeof otm, &otm);
164
165	if (ret == 0) {
166	status = LE_MISSING_FONT_TABLE_ERROR;
167	goto restore;
168	}
169
170	fUnitsPerEM = otm.otmEMSquare;
171	fAscent = otm.otmTextMetrics.tmAscent;
172	fDescent = otm.otmTextMetrics.tmDescent;
173	fLeading = otm.otmTextMetrics.tmExternalLeading;
174
175	status = initMapper();
176
177	if (LE_FAILURE(status)) {
178	goto restore;
179	}
180
181	#if 0
182	status = initFontTableCache();
183	#endif
184
185	restore:
186	RestoreDC(hdc, -1);
187	}
188
189	GDIFontInstance::GDIFontInstance(GDISurface surface, const char faceName, le_int16 pointSize, LEErrorCode &status)
190	: FontTableCache(), fSurface(surface), fFont(NULL),
191	fPointSize(pointSize), fUnitsPerEM(0), fAscent(0), fDescent(0), fLeading(0),
192	fDeviceScaleX(1), fDeviceScaleY(1), fMapper(NULL)
193	{
194	LOGFONTA lf;
195	FLOAT dpiX, dpiY;
196	POINT pt;
197	OUTLINETEXTMETRIC otm;
198	HDC hdc = surface->getHDC();
199
200	if (LE_FAILURE(status)) {
201	return;
202	}
203
204	SaveDC(hdc);
205
206	SetGraphicsMode(hdc, GM_ADVANCED);
207	ModifyWorldTransform(hdc, NULL, MWT_IDENTITY);
208	SetViewportOrgEx(hdc, 0, 0, NULL);
209	SetWindowOrgEx(hdc, 0, 0, NULL);
210
211	dpiX = (FLOAT) GetDeviceCaps(hdc, LOGPIXELSX);
212	dpiY = (FLOAT) GetDeviceCaps(hdc, LOGPIXELSY);
213
214	fDeviceScaleX = dpiX / 72;
215	fDeviceScaleY = dpiY / 72;
216
217	#if 1
218	pt.x = (int) (pointSize * fDeviceScaleX);
219	pt.y = (int) (pointSize * fDeviceScaleY);
220
221	DPtoLP(hdc, &pt, 1);
222	#else
223	pt.x = pt.y = pointSize;
224	#endif
225
226	lf.lfHeight = - pt.y;
227	lf.lfWidth = 0;
228	lf.lfEscapement = 0;
229	lf.lfOrientation = 0;
230	lf.lfWeight = 0;
231	lf.lfItalic = 0;
232	lf.lfUnderline = 0;
233	lf.lfStrikeOut = 0;
234	lf.lfCharSet = DEFAULT_CHARSET;
235	lf.lfOutPrecision = 0;
236	lf.lfClipPrecision = 0;
237	lf.lfQuality = 0;
238	lf.lfPitchAndFamily = 0;
239
240	strcpy(lf.lfFaceName, faceName);
241
242	fFont = CreateFontIndirectA(&lf);
243
244	if (fFont == NULL) {
245	status = LE_FONT_FILE_NOT_FOUND_ERROR;
246	return;
247	}
248
249	SelectObject(hdc, fFont);
250
251	UINT ret = GetOutlineTextMetrics(hdc, sizeof otm, &otm);
252
46f4442e A	253	if (ret != 0) {
	254	fUnitsPerEM = otm.otmEMSquare;
	255	fAscent = otm.otmTextMetrics.tmAscent;
	256	fDescent = otm.otmTextMetrics.tmDescent;
	257	fLeading = otm.otmTextMetrics.tmExternalLeading;
	258	} else {
	259	const HEADTable *headTable = NULL;
	260	const HHEATable *hheaTable = NULL;
	261
	262	// read unitsPerEm from 'head' table
	263	headTable = (const HEADTable *) readFontTable(LE_HEAD_TABLE_TAG);
	264
	265	if (headTable == NULL) {
	266	status = LE_MISSING_FONT_TABLE_ERROR;
	267	goto restore;
	268	}
b75a7d8f	269
46f4442e A	270	fUnitsPerEM = SWAPW(headTable->unitsPerEm);
	271	freeFontTable((const void *)headTable);
	272
	273	hheaTable = (HHEATable *) readFontTable(LE_HHEA_TABLE_TAG);
	274
	275	if (hheaTable == NULL) {
	276	status = LE_MISSING_FONT_TABLE_ERROR;
	277	goto restore;
	278	}
	279
	280	fAscent = (le_int32) yUnitsToPoints((float) SWAPW(hheaTable->ascent));
	281	fDescent = (le_int32) yUnitsToPoints((float) SWAPW(hheaTable->descent));
	282	fLeading = (le_int32) yUnitsToPoints((float) SWAPW(hheaTable->lineGap));
	283
	284	freeFontTable((const void *) hheaTable);
	285	}
b75a7d8f A	286
	287	status = initMapper();
	288
	289	if (LE_FAILURE(status)) {
	290	goto restore;
	291	}
	292
	293	#if 0
	294	status = initFontTableCache();
	295	#endif
	296
	297	restore:
	298	RestoreDC(hdc, -1);
	299	}
	300
	301	GDIFontInstance::~GDIFontInstance()
	302	{
	303	#if 0
	304	flushFontTableCache();
	305	delete[] fTableCache;
	306	#endif
	307
	308	if (fFont != NULL) {
	309	// FIXME: call RemoveObject first?
	310	DeleteObject(fFont);
	311	}
	312
	313	delete fMapper;
	314	fMapper = NULL;
	315	}
	316
	317	LEErrorCode GDIFontInstance::initMapper()
	318	{
	319	LETag cmapTag = LE_CMAP_TABLE_TAG;
	320	const CMAPTable cmap = (const CMAPTable ) readFontTable(cmapTag);
	321
	322	if (cmap == NULL) {
	323	return LE_MISSING_FONT_TABLE_ERROR;
	324	}
	325
	326	fMapper = CMAPMapper::createUnicodeMapper(cmap);
	327
	328	if (fMapper == NULL) {
	329	return LE_MISSING_FONT_TABLE_ERROR;
	330	}
	331
	332	return LE_NO_ERROR;
	333	}
	334
	335	const void *GDIFontInstance::getFontTable(LETag tableTag) const
	336	{
	337	return FontTableCache::find(tableTag);
	338	}
	339
	340	const void *GDIFontInstance::readFontTable(LETag tableTag) const
	341	{
	342	fSurface->setFont(this);
	343
	344	HDC hdc = fSurface->getHDC();
	345	DWORD stag = SWAPL(tableTag);
	346	DWORD len = GetFontData(hdc, stag, 0, NULL, 0);
	347	void *result = NULL;
	348
	349	if (len != GDI_ERROR) {
350	result = LE_NEW_ARRAY(char, len);
351	GetFontData(hdc, stag, 0, result, len);
352	}
353
354	return result;
355	}
356
357	void GDIFontInstance::getGlyphAdvance(LEGlyphID glyph, LEPoint &advance) const
358	{
359	advance.fX = 0;
360	advance.fY = 0;
361
362	if (glyph == 0xFFFE \|\| glyph == 0xFFFF) {
363	return;
364	}
365
366
367	GLYPHMETRICS metrics;
368	DWORD result;
369	MAT2 identity = {{0, 1}, {0, 0}, {0, 0}, {0, 1}};
370	HDC hdc = fSurface->getHDC();
371
372	fSurface->setFont(this);
373
374	result = GetGlyphOutline(hdc, glyph, GGO_GLYPH_INDEX \| GGO_METRICS, &metrics, 0, NULL, &identity);
375
376	if (result == GDI_ERROR) {
377	return;
378	}
379
380	advance.fX = metrics.gmCellIncX;
381	return;
382	}
383
384	le_bool GDIFontInstance::getGlyphPoint(LEGlyphID glyph, le_int32 pointNumber, LEPoint &point) const
385	{
386	#if 0
387	hsFixedPoint2 pt;
388	le_bool result;
389
390	result = fFontInstance->getGlyphPoint(glyph, pointNumber, pt);
391
392	if (result) {
393	point.fX = xUnitsToPoints(pt.fX);
394	point.fY = yUnitsToPoints(pt.fY);
395	}
396
397	return result;
398	#else
374ca955	399	return FALSE;
b75a7d8f A	400	#endif
	401	}
	402