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font.cpp
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font.cpp
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#include <stdint.h>
#include <QFile>
#include <QTextStream>
#include <QFileInfo>
#include <QtXml/QDomDocument>
#include <QtXml/QDomElement>
#include <QImage>
#include <QImageReader>
#include "font.h"
Font::Font(QString image_path, QString xml_path)
{
QFile f(xml_path);
QString errorStr("");
int errorLine(0);
int errorColumn(0);
QDomDocument doc;
QDomElement root;
if (!f.open(QFile::ReadOnly | QFile::Text)) {
qCritical("ERROR: Failed to open config file \"%s\": %s",
xml_path.toUtf8().constData(),
f.errorString().toUtf8().constData()
);
return;
}
if (!doc.setContent(&f, false, &errorStr, &errorLine, &errorColumn)) {
qCritical("ERROR: Failed to parse config file \"%s\" at line %d, column %d:\n%s",
xml_path.toUtf8().constData(),
errorLine,
errorColumn,
errorStr.toUtf8().constData()
);
return;
}
root = doc.documentElement();
if (root.tagName() != "Font") {
qCritical("ERROR: Unexpected root element \"%s\" at line %d, column %d",
root.tagName().toUtf8().constData(),
root.lineNumber(),
root.columnNumber());
return;
}
this->size = root.attribute("size").toInt();
this->family = root.attribute("family");
this->height = root.attribute("height").toInt();
this->style = root.attribute("style");
// qDebug("Font: %d, %s, %d, %s", this->size, this->family.toUtf8().constData(), this->height, this->style.toUtf8().constData());
_minChar = 127;
_maxChar = 0;
QDomElement childElement = root.firstChildElement();
while (!childElement.isNull()) {
QString tagName = childElement.tagName();
if (tagName == "Char") {
Char *c = new Char(childElement);
this->_chars[c->code] = c;
if (c->code > _maxChar)
_maxChar = c->code;
if (c->code < _minChar)
_minChar = c->code;
}
childElement = childElement.nextSiblingElement();
}
QImageReader image_reader(image_path);
this->_image = image_reader.read();
}
void Font::toSource(QString c_name)
{
QFile f(c_name + ".c");
f.open(QFile::Truncate | QFile::WriteOnly);
QTextStream ts(&f);
ts << "#include \"" << c_name << ".h\"" << endl;
ts << endl;
ts << "static CharInfo _" << c_name << "_char_info[] = {" << endl;
for (char c = _minChar; c < _maxChar; ++c) {
ts << "\t";
Char *C = 0;
if (_chars.contains(c)) {
QMap<char, Char*>::Iterator iter = _chars.find(c);
C = iter.value();
ts << *C;
} else {
ts << Char::empty();
}
ts << ",";
if (C) {
ts << " // '" << C->code << "'" << endl;
} else {
ts << " // NULL" << endl;
}
}
ts << "};" << endl;
ts << endl;
ts << "static uint8_t _" << c_name << "_char_data[] = {" << endl;
translateImage(ts, _image);
ts.setIntegerBase(10);
ts << "};" << endl;
ts << endl;
ts << "FontInfo font_" << c_name << " = {" << endl;
ts << "\t'" << _minChar << "'," << endl;
ts << "\t'" << _maxChar << "'," << endl;
ts << "\t_" << c_name << "_char_info," << endl;
ts << "\t_" << c_name << "_char_data," << endl;
ts << "\t" << _image.width() << "," << endl;
ts << "\t" << size << "," << endl;
ts << "\t" << height << endl;
ts << "};" << endl;
ts.flush();
f.close();
}
void Font::toHeader(QString c_name)
{
QFile f(c_name + ".h");
f.open(QFile::Truncate | QFile::WriteOnly);
QTextStream ts(&f);
QString defblock = "__" + c_name.toUpper() + "_H";
ts << "#ifndef " << defblock << endl;
ts << "#define " << defblock << endl;
ts << endl;
ts << "#include <stdint.h>" << endl;
ts << "#include \"font_info.h\"" << endl;
ts << "#ifdef __cplusplus" << endl;
ts << "extern \"C\" {" << endl;
ts << "#endif" << endl;
ts << endl;
ts << "/*" << endl;
ts << " * Family: " << this->family << endl;
ts << " * Size: " << this->size << endl;
ts << " * Height: " << this->height << endl;
ts << " * Style: " << this->style << endl;
ts << " * Supported characters: ";
for (char c = _minChar; c < _maxChar; ++c) {
if (_chars.contains(c)) {
QMap<char, Char*>::Iterator iter = _chars.find(c);
Char *c = iter.value();
ts << c->code;
}
}
ts << endl;
ts << " */" << endl;
ts << endl;
ts << "extern FontInfo font_" << c_name << ";" << endl;
ts << endl;
ts << "#ifdef __cplusplus" << endl;
ts << "} // extern \"C\"" << endl;
ts << "#endif" << endl;
ts << "#endif // " << defblock << endl;
ts.flush();
f.close();
}
void Font::translateImage(QTextStream &ts, QImage &image)
{
int page = 0;
uint8_t line[image.width()];
for (int x = 0; x < image.width(); ++x) {
line[x] = 0;
}
for (int y = 0; y < image.height(); ++y) {
int shift = (y % 8);
for (int x = 0; x < image.width(); ++x) {
if (image.pixel(x, y) == qRgb(255,255,255)) {
line[page * image.width() + x] |= (1 << shift);
}
}
if (shift == 7 || (y + 1) == image.height()) {
ts << "\t";
for (int x = 0; x < image.width(); ++x) {
ts << QString("0x%1").arg(line[x], 2, 16, QChar('0')) << ",";
line[x] = 0;
}
ts << endl;
}
}
}