Logo Search packages:      
Sourcecode: fbreader version File versions

ZLQtPaintContext.cpp

/*
 * Copyright (C) 2004-2009 Geometer Plus <contact@geometerplus.com>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
 * 02110-1301, USA.
 */

#include <fribidi/fribidi.h>

#include <qpainter.h>
#include <qpixmap.h>
#include <qfontmetrics.h>
#include <qfontdatabase.h>
#include <qimage.h>

#include <ZLUnicodeUtil.h>
#include <ZLImage.h>

#include "ZLQtPaintContext.h"
#include "../../qt/image/ZLQtImageManager.h"
#ifdef USE_ZAURUS_FONTHACK
  #include "ZLZaurusFontHack.h"
#endif /* USE_ZAURUS_FONTHACK */

ZLQtPaintContext::ZLQtPaintContext() {
      myPainter = new QPainter();
      myPixmap = 0;
      mySpaceWidth = -1;
      myDescent = 0;
      myFontIsStored = false;
}

ZLQtPaintContext::~ZLQtPaintContext() {
      if (myPixmap != 0) {
            myPainter->end();
            delete myPixmap;
      }
      delete myPainter;
}

void ZLQtPaintContext::setSize(int w, int h) {
      if (myPixmap != 0) {
            if ((myPixmap->width() != w) || (myPixmap->height() != h)) {
                  myPainter->end();
                  delete myPixmap;
                  myPixmap = 0;
            }
      }
      if ((myPixmap == 0) && (w > 0) && (h > 0)) {
            myPixmap = new QPixmap(w, h);
            myPainter->begin(myPixmap);
            if (myFontIsStored) {
                  myFontIsStored = false;
                  setFont(myStoredFamily, myStoredSize, myStoredBold, myStoredItalic);
            }
      }
}

static const std::string HELVETICA = "helvetica";

void ZLQtPaintContext::fillFamiliesList(std::vector<std::string> &families) const {
      bool helveticaFlag = false;
#ifdef USE_ZAURUS_FONTHACK
      std::set<std::string> famSet = ZLZaurusFontHack::families();
      for (std::set<std::string>::const_iterator it = famSet.begin(); it != famSet.end(); ++it) {
            if (*it == HELVETICA) {
                  helveticaFlag = true;
            }
            families.push_back(*it);
      }
#else /* USE_ZAURUS_FONTHACK */
      QFontDatabase db;
      QStringList qFamilies = db.families();
      for (QStringList::Iterator it = qFamilies.begin(); it != qFamilies.end(); ++it) {
            std::string family = (*it).ascii();
            if (family == HELVETICA) {
                  helveticaFlag = true;
            }
            families.push_back(family);
      }
#endif /* USE_ZAURUS_FONTHACK */
      if (!helveticaFlag) {
            families.push_back(HELVETICA);
      }
}

const std::string ZLQtPaintContext::realFontFamilyName(std::string &fontFamily) const {
#ifdef USE_ZAURUS_FONTHACK
      std::string family = ZLUnicodeUtil::toLower(fontFamily);
      std::set<std::string> famSet = ZLZaurusFontHack::families();
      for (std::set<std::string>::const_iterator it = famSet.begin(); it != famSet.end(); ++it) {
            if (*it == family) {
                  return family;
            }
      }
      return HELVETICA;
#else /* USE_ZAURUS_FONTHACK */
      QString fullName = QFontInfo(QFont(fontFamily.c_str())).family();
      if (fullName.isNull() || fullName.isEmpty()) {
            fullName = QFontInfo(QFont::defaultFont()).family();
            if (fullName.isNull() || fullName.isEmpty()) {
                  return HELVETICA;
            }
      }
      return fullName.left(fullName.find(" [")).ascii();
#endif /* USE_ZAURUS_FONTHACK */
}

void ZLQtPaintContext::setFont(const std::string &family, int size, bool bold, bool italic) {
      if (myPainter->device() == 0) {
            myFontIsStored = true;
            myStoredFamily = family;
            myStoredSize = size;
            myStoredBold = bold;
            myStoredItalic= italic;
      } else {
            QFont font = myPainter->font();
            bool fontChanged = false;

            if (font.family() != family.c_str()) {
                  font.setFamily(family.c_str());
                  fontChanged = true;
            }

            if (font.pointSize() != size) {
                  font.setPointSize(size);
                  fontChanged = true;
            }

            if ((font.weight() != (bold ? QFont::Bold : QFont::Normal))) {
                  font.setWeight(bold ? QFont::Bold : QFont::Normal);
                  fontChanged = true;
            }

            if (font.italic() != italic) {
                  font.setItalic(italic);
                  fontChanged = true;
            }

            if (fontChanged) {
                  myPainter->setFont(font);
                  mySpaceWidth = -1;
                  myDescent = myPainter->fontMetrics().descent();
            }
      }
}

void ZLQtPaintContext::setColor(ZLColor color, LineStyle style) {
      myPainter->setPen(QPen(
            QColor(color.Red, color.Green, color.Blue),
            1,
            (style == SOLID_LINE) ? QPainter::SolidLine : QPainter::DashLine
      ));
}

void ZLQtPaintContext::setFillColor(ZLColor color, FillStyle style) {
      myPainter->setBrush(QBrush(
            QColor(color.Red, color.Green, color.Blue),
            (style == SOLID_FILL) ? QPainter::SolidPattern : QPainter::NoBrush
      ));
}

int ZLQtPaintContext::stringWidth(const char *str, int len, bool rtl) const {
      return myPainter->fontMetrics().width(QString::fromUtf8(str, len));
}

int ZLQtPaintContext::spaceWidth() const {
      if (mySpaceWidth == -1) {
            mySpaceWidth = myPainter->fontMetrics().width(" ");
      }
      return mySpaceWidth;
}

int ZLQtPaintContext::descent() const {
      return myDescent;
}

int ZLQtPaintContext::stringHeight() const {
      return myPainter->font().pointSize() + 2;
}

void ZLQtPaintContext::drawString(int x, int y, const char *str, int len, bool rtl) {
      if (rtl) {
            static ZLUnicodeUtil::Ucs2String ucs2Str;
            ucs2Str.clear();
            ZLUnicodeUtil::utf8ToUcs2(ucs2Str, str, len);
            QString qStr;
            FriBidiChar ch;
            for (int i = ucs2Str.size() - 1; i >= 0; --i) {
                  fribidi_get_mirror_char(ucs2Str[i], &ch);
                  qStr.append(QChar(ch));
            }
            myPainter->drawText(x, y, qStr);
      } else {
            QString qStr = QString::fromUtf8(str, len);
            myPainter->drawText(x, y, qStr);
      }
}

void ZLQtPaintContext::drawImage(int x, int y, const ZLImageData &image) {
      const QImage &qImage = (ZLQtImageData&)image;
      myPainter->drawImage(x, y - qImage.height(), qImage);
}

void ZLQtPaintContext::drawLine(int x0, int y0, int x1, int y1) {
      myPainter->drawLine(x0, y0, x1, y1);
}

void ZLQtPaintContext::fillRectangle(int x0, int y0, int x1, int y1) {
      if (x1 < x0) {
            int tmp = x1;
            x1 = x0;
            x0 = tmp;
      }
      if (y1 < y0) {
            int tmp = y1;
            y1 = y0;
            y0 = tmp;
      }
      myPainter->fillRect(x0, y0,
                                                                  x1 - x0 + 1, y1 - y0 + 1,
                                                                  myPainter->brush());
}

void ZLQtPaintContext::drawFilledCircle(int x, int y, int r) {
      myPainter->drawEllipse(x - r, y - r, 2 * r + 1, 2 * r + 1);
}

void ZLQtPaintContext::clear(ZLColor color) {
      if (myPixmap != 0) {
            myPixmap->fill(QColor(color.Red, color.Green, color.Blue));
      }
}

int ZLQtPaintContext::width() const {
      if (myPixmap == 0) {
            return 0;
      }
      return myPixmap->width();
}

int ZLQtPaintContext::height() const {
      if (myPixmap == 0) {
            return 0;
      }
      return myPixmap->height();
}

Generated by  Doxygen 1.6.0   Back to index