FM / layout

/opt/alt/libicu71/usr/share/doc/alt-libicu71-devel/samples/layout/

/opt/alt/libicu71/usr/share/doc/alt-libicu71-devel/samples/layout

Name	Size	Mode	Actions
arraymem.h	638	0644	edit dl rm
cgnomelayout.c	8640	0644	edit dl rm
clayout.c	10052	0644	edit dl rm
cmaps.cpp	5420	0644	edit dl rm
cmaps.h	2098	0644	edit dl rm
FontMap.cpp	7509	0644	edit dl rm
FontMap.GDI	418	0644	edit dl rm
FontMap.Gnome	384	0644	edit dl rm
FontMap.h	1879	0644	edit dl rm
FontTableCache.cpp	2419	0644	edit dl rm
FontTableCache.h	1081	0644	edit dl rm
GDIFontInstance.cpp	9818	0644	edit dl rm
GDIFontInstance.h	3680	0644	edit dl rm
GDIFontMap.cpp	1348	0644	edit dl rm
GDIFontMap.h	1254	0644	edit dl rm
gdiglue.cpp	1699	0644	edit dl rm
gdiglue.h	975	0644	edit dl rm
GDIGUISupport.cpp	854	0644	edit dl rm
GDIGUISupport.h	941	0644	edit dl rm
GnomeFontInstance.cpp	5549	0644	edit dl rm
GnomeFontInstance.h	3872	0644	edit dl rm
GnomeFontMap.cpp	1419	0644	edit dl rm
GnomeFontMap.h	1232	0644	edit dl rm
gnomeglue.cpp	1674	0644	edit dl rm
gnomeglue.h	978	0644	edit dl rm
GnomeGUISupport.cpp	1066	0644	edit dl rm
GnomeGUISupport.h	953	0644	edit dl rm
gnomelayout.cpp	8693	0644	edit dl rm
gsupport.h	362	0644	edit dl rm
GUISupport.h	882	0644	edit dl rm
layout.cpp	10024	0644	edit dl rm
layout.sln	1202	0644	edit dl rm
layout.vcxproj	11750	0644	edit dl rm
layout.vcxproj.filters	3132	0644	edit dl rm
LayoutSample.rc	3434	0644	edit dl rm
Makefile	2975	0644	edit dl rm
Makefile.in	2983	0644	edit dl rm
paragraph.cpp	7757	0644	edit dl rm
paragraph.h	2224	0644	edit dl rm
pflow.c	9482	0644	edit dl rm
pflow.h	932	0644	edit dl rm
readme.html	7492	0644	edit dl rm
RenderingSurface.h	1111	0644	edit dl rm
resource.h	899	0644	edit dl rm
rsurface.cpp	704	0644	edit dl rm
rsurface.h	520	0644	edit dl rm
Sample.txt	1697	0644	edit dl rm
ScriptCompositeFontInstance.cpp	3266	0644	edit dl rm
ScriptCompositeFontInstance.h	6295	0644	edit dl rm
sfnt.h	5013	0644	edit dl rm
Surface.cpp	884	0644	edit dl rm
Surface.h	511	0644	edit dl rm
ucreader.cpp	501	0644	edit dl rm
ucreader.h	414	0644	edit dl rm
UnicodeReader.cpp	4194	0644	edit dl rm
UnicodeReader.h	991	0644	edit dl rm

Edit: /opt/alt/libicu71/usr/share/doc/alt-libicu71-devel/samples/layout/GDIFontInstance.cpp (9818B)

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

cmd: