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opt / alt / libicu / usr / share / doc / alt-libicu-devel / samples / layout /

?? ..
?? FontMap.GDI(426 B)
?? FontMap.Gnome(392 B)
?? FontMap.cpp(7.34 KB)
?? FontMap.h(1.84 KB)
?? FontTableCache.cpp(2.37 KB)
?? FontTableCache.h(1.06 KB)
?? GDIFontInstance.cpp(9.6 KB)
?? GDIFontInstance.h(3.6 KB)
?? GDIFontMap.cpp(1.32 KB)
?? GDIFontMap.h(1.23 KB)
?? GDIGUISupport.cpp(862 B)
?? GDIGUISupport.h(949 B)
?? GUISupport.h(890 B)
?? GnomeFontInstance.cpp(5.43 KB)
?? GnomeFontInstance.h(3.79 KB)
?? GnomeFontMap.cpp(1.39 KB)
?? GnomeFontMap.h(1.21 KB)
?? GnomeGUISupport.cpp(1.05 KB)
?? GnomeGUISupport.h(961 B)
?? LayoutSample.rc(3.37 KB)
?? Makefile(2.92 KB)
?? Makefile.in(2.92 KB)
?? RenderingSurface.h(1.09 KB)
?? Sample.txt(1.66 KB)
?? ScriptCompositeFontInstance.cpp(3.2 KB)
?? ScriptCompositeFontInstance.h(6.15 KB)
?? Surface.cpp(892 B)
?? Surface.h(519 B)
?? UnicodeReader.cpp(4.1 KB)
?? UnicodeReader.h(999 B)
?? arraymem.h(646 B)
?? cgnomelayout.c(8.45 KB)
?? clayout.c(9.82 KB)
?? cmaps.cpp(5.3 KB)
?? cmaps.h(2.06 KB)
?? gdiglue.cpp(1.67 KB)
?? gdiglue.h(983 B)
?? gnomeglue.cpp(1.64 KB)
?? gnomeglue.h(986 B)
?? gnomelayout.cpp(8.5 KB)
?? gsupport.h(370 B)
?? layout.cpp(9.8 KB)
?? layout.sln(1.17 KB)
?? layout.vcxproj(13.15 KB)
?? layout.vcxproj.filters(3.06 KB)
?? paragraph.cpp(7.58 KB)
?? paragraph.h(2.18 KB)
?? pflow.c(9.27 KB)
?? pflow.h(940 B)
?? readme.html(7.32 KB)
?? resource.h(907 B)
?? rsurface.cpp(712 B)
?? rsurface.h(528 B)
?? sfnt.h(4.9 KB)
?? ucreader.cpp(509 B)
?? ucreader.h(422 B)

Editing: GDIFontInstance.cpp

/*
 *******************************************************************************
 *
 *   © 2016 and later: Unicode, Inc. and others.
 *   License & terms of use: http://www.unicode.org/copyright.html#License
 *
 *******************************************************************************
 *******************************************************************************
 *
 *   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

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
}

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Editing: GDIFontInstance.cpp

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