FM / layout

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

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

Name	Size	Mode	Actions
arraymem.h	646	0644	edit dl rm
cgnomelayout.c	8648	0644	edit dl rm
clayout.c	10060	0644	edit dl rm
cmaps.cpp	5428	0644	edit dl rm
cmaps.h	2106	0644	edit dl rm
FontMap.cpp	7517	0644	edit dl rm
FontMap.GDI	426	0644	edit dl rm
FontMap.Gnome	392	0644	edit dl rm
FontMap.h	1887	0644	edit dl rm
FontTableCache.cpp	2427	0644	edit dl rm
FontTableCache.h	1089	0644	edit dl rm
GDIFontInstance.cpp	9826	0644	edit dl rm
GDIFontInstance.h	3688	0644	edit dl rm
GDIFontMap.cpp	1356	0644	edit dl rm
GDIFontMap.h	1262	0644	edit dl rm
gdiglue.cpp	1707	0644	edit dl rm
gdiglue.h	983	0644	edit dl rm
GDIGUISupport.cpp	862	0644	edit dl rm
GDIGUISupport.h	949	0644	edit dl rm
GnomeFontInstance.cpp	5557	0644	edit dl rm
GnomeFontInstance.h	3880	0644	edit dl rm
GnomeFontMap.cpp	1427	0644	edit dl rm
GnomeFontMap.h	1240	0644	edit dl rm
gnomeglue.cpp	1682	0644	edit dl rm
gnomeglue.h	986	0644	edit dl rm
GnomeGUISupport.cpp	1074	0644	edit dl rm
GnomeGUISupport.h	961	0644	edit dl rm
gnomelayout.cpp	8701	0644	edit dl rm
gsupport.h	370	0644	edit dl rm
GUISupport.h	890	0644	edit dl rm
layout.cpp	10032	0644	edit dl rm
layout.sln	1202	0644	edit dl rm
layout.vcxproj	13234	0644	edit dl rm
layout.vcxproj.filters	3132	0644	edit dl rm
LayoutSample.rc	3450	0644	edit dl rm
Makefile	2983	0644	edit dl rm
Makefile.in	2991	0644	edit dl rm
paragraph.cpp	7765	0644	edit dl rm
paragraph.h	2232	0644	edit dl rm
pflow.c	9490	0644	edit dl rm
pflow.h	940	0644	edit dl rm
readme.html	7500	0644	edit dl rm
RenderingSurface.h	1119	0644	edit dl rm
resource.h	907	0644	edit dl rm
rsurface.cpp	712	0644	edit dl rm
rsurface.h	528	0644	edit dl rm
Sample.txt	1697	0644	edit dl rm
ScriptCompositeFontInstance.cpp	3274	0644	edit dl rm
ScriptCompositeFontInstance.h	6302	0644	edit dl rm
sfnt.h	5021	0644	edit dl rm
Surface.cpp	892	0644	edit dl rm
Surface.h	519	0644	edit dl rm
ucreader.cpp	509	0644	edit dl rm
ucreader.h	422	0644	edit dl rm
UnicodeReader.cpp	4202	0644	edit dl rm
UnicodeReader.h	999	0644	edit dl rm

Edit: /usr/share/doc/libicu-devel/samples/layout/FontMap.cpp (7517B)

/*
 ******************************************************************************
 * © 2016 and later: Unicode, Inc. and others.                    *
 * License & terms of use: http://www.unicode.org/copyright.html#License      *
 ******************************************************************************
 ******************************************************************************
 * Copyright (C) 1998-2006, International Business Machines Corporation and   *
 * others. All Rights Reserved.                                               *
 ******************************************************************************
 */

#include <stdio.h>
#include <string.h>
#include <ctype.h>

#include "unicode/utypes.h"
#include "unicode/uscript.h"

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

#include "GUISupport.h"
#include "FontMap.h"

FontMap::FontMap(const char *fileName, le_int16 pointSize, GUISupport *guiSupport, LEErrorCode &status)
    : fPointSize(pointSize), fFontCount(0), fAscent(0), fDescent(0), fLeading(0), fGUISupport(guiSupport)
{
    le_int32 defaultFont = -1, i, script;
    le_bool haveFonts = FALSE;

/**/
    for (i = 0; i < scriptCodeCount; i += 1) {
        fFontIndices[i] = -1;
        fFontNames[i] = NULL;
        fFontInstances[i] = NULL;
    }
 /**/

if (LE_FAILURE(status)) {
        return;
    }

char *c, *scriptName, *fontName, *line, buffer[BUFFER_SIZE];
    FILE *file;

file = fopen(fileName, "r");

if (file == NULL) {
        sprintf(errorMessage, "Could not open the font map file: %s.", fileName);
        fGUISupport->postErrorMessage(errorMessage, "Font Map Error");
        status = LE_FONT_FILE_NOT_FOUND_ERROR;
        return;
    }

while (fgets(buffer, BUFFER_SIZE, file) != NULL) {
        UScriptCode scriptCode;
        UErrorCode scriptStatus = U_ZERO_ERROR;

line = strip(buffer);
        if (line[0] == '#' || line[0] == 0) {
            continue;
        }

c = strchr(line, ':');
        c[0] = 0;

fontName   = strip(&c[1]);
        scriptName = strip(line);

if (strcmp(scriptName, "DEFAULT") == 0) {
            defaultFont = getFontIndex(fontName);
            haveFonts = TRUE;
            continue;
        }

le_int32 fillCount = uscript_getCode(scriptName, &scriptCode, 1, &scriptStatus);

if (U_FAILURE(scriptStatus) || fillCount <= 0 ||
            scriptStatus == U_USING_FALLBACK_WARNING || scriptStatus == U_USING_DEFAULT_WARNING) {
            sprintf(errorMessage, "The script name %s is invalid.", line);
            fGUISupport->postErrorMessage(errorMessage, "Font Map Error");
            continue;
        }

script = (le_int32) scriptCode;

if (fFontIndices[script] >= 0) {
            // FIXME: complain that this is a duplicate entry and bail (?)
            fFontIndices[script] = -1;
        }

fFontIndices[script] = getFontIndex(fontName);
        haveFonts = TRUE;
    }

if (defaultFont >= 0) {
        for (script = 0; script < scriptCodeCount; script += 1) {
            if (fFontIndices[script] < 0) {
                fFontIndices[script] = defaultFont;
            }
        }
    }

if (! haveFonts) {
        sprintf(errorMessage, "The font map file %s does not contain any valid scripts.", fileName);
        fGUISupport->postErrorMessage(errorMessage, "Font Map Error");
        status = LE_ILLEGAL_ARGUMENT_ERROR;
    }

fclose(file);
}

FontMap::~FontMap()
{
    le_int32 font;

for (font = 0; font < fFontCount; font += 1) {
        if (fFontNames[font] != NULL) {
            delete[] (char *) fFontNames[font];
        }
    }

for (font = 0; font < fFontCount; font += 1) {
        if (fFontInstances[font] != NULL) {
            delete fFontInstances[font];
        }
    }
}

le_int32 FontMap::getFontIndex(const char *fontName)
{
    le_int32 index;

for (index = 0; index < fFontCount; index += 1) {
        if (strcmp(fontName, fFontNames[index]) == 0) {
            return index;
        }
    }

if (fFontCount < (le_int32) scriptCodeCount) {
        index = fFontCount++;
    } else {
        // The font name table is full. Since there can
        // only be scriptCodeCount fonts in use at once,
        // there should be at least one that's not being
        // referenced; find it and resue it's index.

for (index = 0; index < fFontCount; index += 1) {
            le_int32 script;

for (script = 0; script < scriptCodeCount; script += 1) {
                if (fFontIndices[script] == index) {
                    break;
                }
            }

if (script >= scriptCodeCount) {
                break;
            }
        }
    }

if (index >= scriptCodeCount) {
        return -1;
    }

le_int32 len = strlen(fontName);
    char *s = new char[len + 1];

fFontNames[index] = strcpy(s, fontName);
    return index;
}

char *FontMap::strip(char *s)
{
    le_int32 start, end, len;

start = 0;
    len = strlen(s);

while (start < len && isspace(s[start])) {
        start += 1;
    }

end = len - 1;

while (end > start && isspace(s[end])) {
        end -= 1;
    }

if (end < len) {
        s[end + 1] = '\0';
    }

return &s[start];
}

const LEFontInstance *FontMap::getScriptFont(le_int32 scriptCode, LEErrorCode &status)
{
    if (LE_FAILURE(status)) {
        return NULL;
    }

if (scriptCode <= -1 || scriptCode >= scriptCodeCount) {
        status = LE_ILLEGAL_ARGUMENT_ERROR;
        return NULL;
    }

le_int32 fontIndex = fFontIndices[scriptCode];

if (fontIndex < 0) {
        sprintf(errorMessage, "No font was set for script %s", uscript_getName((UScriptCode) scriptCode));
        fGUISupport->postErrorMessage(errorMessage, "Font Map Error");
        status = LE_FONT_FILE_NOT_FOUND_ERROR;
        return NULL;
    }

if (fFontInstances[fontIndex] == NULL) {
        fFontInstances[fontIndex] = openFont(fFontNames[fontIndex], fPointSize, status);

if (LE_FAILURE(status)) {
            sprintf(errorMessage, "Could not open font file %s", fFontNames[fontIndex]);
            fGUISupport->postErrorMessage(errorMessage, "Font Map Error");
            return NULL;
        }
    }

return fFontInstances[fontIndex];
}

le_int32 FontMap::getAscent() const
{
    if (fAscent <= 0) {
        ((FontMap *) this)->getMaxMetrics();
    }

return fAscent;
}

le_int32 FontMap::getDescent() const
{
    if (fDescent <= 0) {
        ((FontMap *) this)->getMaxMetrics();
    }

return fDescent;
}

le_int32 FontMap::getLeading() const
{
    if (fLeading <= 0) {
        ((FontMap *) this)->getMaxMetrics();
    }

return fLeading;
}

void FontMap::getMaxMetrics()
{
    for (le_int32 i = 0; i < fFontCount; i += 1) {
        LEErrorCode status = LE_NO_ERROR;
        le_int32 ascent, descent, leading;

if (fFontInstances[i] == NULL) {
            fFontInstances[i] = openFont(fFontNames[i], fPointSize, status);

if (LE_FAILURE(status)) {
                continue;
            }
        }

ascent  = fFontInstances[i]->getAscent();
        descent = fFontInstances[i]->getDescent();
        leading = fFontInstances[i]->getLeading();

if (ascent > fAscent) {
            fAscent = ascent;
        }

if (descent > fDescent) {
            fDescent = descent;
        }

if (leading > fLeading) {
            fLeading = leading;
        }
    }
}

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