1 files changed, 339 insertions, 0 deletions

diff --git a/noncore/graphics/drawpad/drawpadcanvas.cpp b/noncore/graphics/drawpad/drawpadcanvas.cpp
new file mode 100644
index 0000000..f02f478
--- a/dev/null
+++ b/noncore/graphics/drawpad/drawpadcanvas.cpp
@@ -0,0 +1,339 @@
+/***************************************************************************
+ *                                                                         *
+ *   DrawPad - a drawing program for Opie Environment                      *
+ *                                                                         *
+ *   (C) 2002 by S. Prud'homme <prudhomme@laposte.net>                     *
+ *                                                                         *
+ *   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.                                   *
+ *                                                                         *
+ ***************************************************************************/
+
+#include "drawpadcanvas.h"
+
+#include "drawmode.h"
+#include "drawpad.h"
+
+#include <qbuffer.h>
+#include <qimage.h>
+#include <qpainter.h>
+#include <qpixmap.h>
+#include <qtextcodec.h>
+#include <qtextstream.h>
+#include <qxml.h>
+
+#include <zlib.h>
+
+class DrawPadCanvasXmlHandler: public QXmlDefaultHandler
+{
+public:
+    DrawPadCanvasXmlHandler();
+    ~DrawPadCanvasXmlHandler();
+
+    QList<QPixmap> pixmaps();
+
+    bool startElement(const QString& namespaceURI, const QString& localName,
+                      const QString& qName, const QXmlAttributes& atts);
+    bool endElement(const QString& namespaceURI, const QString& localName,
+                    const QString& qName);
+    bool characters(const QString& ch);
+
+private:
+    enum State {
+        Unknown,
+        InData
+    };
+
+    State m_state;
+    ulong m_dataLenght;
+    QList<QPixmap> m_pixmaps;
+};
+
+DrawPadCanvasXmlHandler::DrawPadCanvasXmlHandler()
+{
+    m_state = Unknown;
+}
+
+DrawPadCanvasXmlHandler::~DrawPadCanvasXmlHandler()
+{
+}
+
+QList<QPixmap> DrawPadCanvasXmlHandler::pixmaps()
+{
+    return m_pixmaps;
+}
+
+bool DrawPadCanvasXmlHandler::startElement(const QString& namespaceURI, const QString& localName,
+                                           const QString& qName, const QXmlAttributes& atts)
+{
+    Q_CONST_UNUSED(namespaceURI)
+    Q_CONST_UNUSED(localName)
+
+    if (qName.compare("data") == 0) {
+        m_state = InData;
+        m_dataLenght = atts.value("length").toULong();
+    }
+
+    return true;
+}
+
+bool DrawPadCanvasXmlHandler::endElement(const QString& namespaceURI, const QString& localName,
+                                         const QString& qName)
+{
+    Q_CONST_UNUSED(namespaceURI)
+    Q_CONST_UNUSED(localName)
+
+    if (qName.compare("data") == 0) {
+        m_state = Unknown;
+    }
+
+    return true;
+}
+
+bool DrawPadCanvasXmlHandler::characters(const QString& ch) 
+{
+    if (m_state == InData) {
+        QByteArray byteArray(ch.length() / 2);
+
+        for (int i = 0; i < (int)ch.length() / 2; i++) {
+            char h = ch[2 * i].latin1();
+            char l = ch[2 * i  + 1].latin1();
+            uchar r = 0;
+
+            if (h <= '9') {
+                r += h - '0';
+            } else {
+                r += h - 'a' + 10;
+            }
+
+            r = r << 4;
+
+            if (l <= '9') {
+                r += l - '0';
+            } else {
+                r += l - 'a' + 10;
+            }
+
+            byteArray[i] = r;
+        }
+
+        if (m_dataLenght < ch.length() * 5) {
+            m_dataLenght = ch.length() * 5;
+        }
+
+        QByteArray byteArrayUnzipped(m_dataLenght);
+        ::uncompress((uchar*)byteArrayUnzipped.data(), &m_dataLenght, (uchar*)byteArray.data(), byteArray.size());
+
+        QImage image;
+        image.loadFromData((const uchar*)byteArrayUnzipped.data(), m_dataLenght, "XPM");
+
+        QPixmap* pixmap = new QPixmap(image.width(), image.height());
+        pixmap->convertFromImage(image);
+        m_pixmaps.append(pixmap);
+    }
+
+    return true;
+}
+
+DrawPadCanvas::DrawPadCanvas(DrawPad* drawPad, QWidget* parent, const char* name, WFlags f)
+    : QWidget(parent, name, f)
+{
+    setBackgroundMode(QWidget::PaletteBase);
+
+    m_pDrawPad = drawPad;
+    m_buffers.setAutoDelete(true);
+    m_buffers.append(new QPixmap(width(), height()));
+    m_buffers.current()->fill(Qt::white);
+}
+
+DrawPadCanvas::~DrawPadCanvas()
+{
+}
+
+void DrawPadCanvas::load(QIODevice* ioDevice)
+{
+    QTextStream textStream(ioDevice);
+    textStream.setCodec(QTextCodec::codecForName("UTF-8"));
+
+    QXmlInputSource xmlInputSource(textStream);
+    QXmlSimpleReader xmlSimpleReader;
+    DrawPadCanvasXmlHandler drawPadCanvasXmlHandler;
+
+    xmlSimpleReader.setContentHandler(&drawPadCanvasXmlHandler);
+    xmlSimpleReader.parse(xmlInputSource);
+
+    m_buffers = drawPadCanvasXmlHandler.pixmaps();
+
+    if (m_buffers.isEmpty()) {
+        m_buffers.append(new QPixmap(width(), height()));
+        m_buffers.current()->fill(Qt::white);
+    }
+
+    repaint();
+}
+
+void DrawPadCanvas::save(QIODevice* ioDevice)
+{
+    QTextStream textStream(ioDevice);
+    textStream.setCodec(QTextCodec::codecForName("UTF-8"));
+
+    textStream << "<drawpad>" << endl;
+    textStream << "    <images>" << endl;
+
+    QListIterator<QPixmap> bufferIterator(m_buffers);
+
+    for (bufferIterator.toFirst(); bufferIterator.current() != 0; ++bufferIterator) {
+        textStream << "        <image>" << endl;
+
+        QImage image = bufferIterator.current()->convertToImage();
+        QByteArray byteArray;
+        QBuffer buffer(byteArray);
+        QImageIO imageIO(&buffer, "XPM");
+
+        buffer.open(IO_WriteOnly);
+        imageIO.setImage(image);
+        imageIO.write();
+        buffer.close();
+
+        ulong size = byteArray.size() * 2;
+        QByteArray byteArrayZipped(size);
+        ::compress((uchar*)byteArrayZipped.data(), &size, (uchar*)byteArray.data(), byteArray.size());
+
+        textStream << "            <data length=\"" << byteArray.size() << "\">";
+
+        static const char hexchars[] = "0123456789abcdef";
+
+        for (int i = 0; i < (int)size; i++ ) {
+            uchar s = (uchar)byteArrayZipped[i];
+            textStream << hexchars[s >> 4];
+            textStream << hexchars[s & 0x0f];
+        }
+
+        textStream << "</data>" << endl;
+        textStream << "        </image>" << endl;
+    }
+
+    textStream << "    </images>" << endl;
+    textStream << "</drawpad>";
+}
+
+QPixmap* DrawPadCanvas::currentPage()
+{
+    return m_buffers.current();
+}
+
+void DrawPadCanvas::clearAll()
+{
+    m_buffers.clear();
+
+    m_buffers.append(new QPixmap(width(), height()));
+    m_buffers.current()->fill(Qt::white);
+
+    repaint();
+}
+
+void DrawPadCanvas::newPage()
+{
+    m_buffers.insert(m_buffers.at() + 1, new QPixmap(width(), height()));
+    m_buffers.current()->fill(Qt::white);
+    repaint();
+}
+
+void DrawPadCanvas::clearPage()
+{
+    m_buffers.current()->fill(Qt::white);
+    repaint();
+}
+
+void DrawPadCanvas::deletePage()
+{
+    m_buffers.remove(m_buffers.current());
+
+    if (m_buffers.isEmpty()) {
+        m_buffers.append(new QPixmap(width(), height()));
+        m_buffers.current()->fill(Qt::white);
+    }
+
+    repaint();
+}
+
+bool DrawPadCanvas::goPreviousPageEnabled()
+{
+    return (m_buffers.current() != m_buffers.getFirst());
+}
+
+bool DrawPadCanvas::goNextPageEnabled()
+{
+    return (m_buffers.current() != m_buffers.getLast());
+}
+
+void DrawPadCanvas::goFirstPage()
+{
+    m_buffers.first();
+    repaint();
+}
+
+void DrawPadCanvas::goPreviousPage()
+{
+    m_buffers.prev();
+    repaint();
+}
+
+void DrawPadCanvas::goNextPage()
+{
+    m_buffers.next();
+    repaint();
+}
+
+void DrawPadCanvas::goLastPage()
+{
+    m_buffers.last();
+    repaint();
+}
+
+void DrawPadCanvas::mousePressEvent(QMouseEvent* e)
+{
+    m_pDrawPad->drawMode()->mousePressEvent(e);
+}
+
+void DrawPadCanvas::mouseReleaseEvent(QMouseEvent* e)
+{
+    m_pDrawPad->drawMode()->mouseReleaseEvent(e);
+}
+
+void DrawPadCanvas::mouseMoveEvent(QMouseEvent* e)
+{
+    m_pDrawPad->drawMode()->mouseMoveEvent(e);
+}
+
+void DrawPadCanvas::resizeEvent(QResizeEvent* e)
+{
+    QWidget::resizeEvent(e);
+
+    QListIterator<QPixmap> bufferIterator(m_buffers);
+
+    for (bufferIterator.toFirst(); bufferIterator.current() != 0; ++bufferIterator) {
+        int w = width() > bufferIterator.current()->width() ? width() : bufferIterator.current()->width();
+        int h = height() > bufferIterator.current()->height() ? height() : bufferIterator.current()->height();
+
+        QPixmap tmpPixmap(*(bufferIterator.current()));
+        bufferIterator.current()->resize(w, h);
+        bufferIterator.current()->fill(Qt::white);
+
+        bitBlt(bufferIterator.current(), 0, 0, &tmpPixmap, 0, 0, tmpPixmap.width(), tmpPixmap.height());
+    }
+}
+
+void DrawPadCanvas::paintEvent(QPaintEvent* e)
+{
+    QWidget::paintEvent(e);
+
+    QArray<QRect> rects = e->region().rects();
+
+    for (uint i = 0; i < rects.count(); i++) {
+        QRect r = rects[i];
+        bitBlt(this, r.x(), r.y(), m_buffers.current(), r.x(), r.y(), r.width(), r.height());
+    }
+}