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162 lines
3.7 KiB
162 lines
3.7 KiB
/****************************************************************************
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KHotKeys
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Copyright (C) 2003 Mike Pilone <mpilone@slac.com>
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Copyright (C) 2003 Lubos Lunak <l.lunak@kde.org>
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Distributed under the terms of the GNU General Public License version 2.
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****************************************************************************/
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#include <tqcolor.h>
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#include <tqpainter.h>
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#include "gesturedrawer.h"
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namespace KHotKeys
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{
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GestureDrawer::GestureDrawer(TQWidget *parent, const char *name)
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: TQFrame(parent, name), _data(TQString::null)
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{
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setBackgroundColor( colorGroup().base());
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setFrameStyle(TQFrame::Panel | TQFrame::Sunken);
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setMinimumSize(30, 30);
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}
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GestureDrawer::~GestureDrawer()
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{
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}
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void GestureDrawer::setData(const TQString &data)
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{
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_data = data;
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repaint();
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}
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void GestureDrawer::paintEvent(TQPaintEvent *ev)
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{
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// Iterate through the data points and draw a line to each of them
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TQ_UINT32 startCell = 0;
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TQ_UINT32 endCell = 0;
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TQPoint startPoint;
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TQPoint endPoint;
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TQPainter p(this);
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if (_data.length() > 0)
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{
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startCell = TQString(_data[0]).toUInt();
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}
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for (TQ_UINT32 index = 1; index < _data.length(); ++index)
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{
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endCell = TQString(_data[index]).toUInt();
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startPoint = lookupCellCoords(startCell);
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endPoint = lookupCellCoords(endCell);
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if (index == 1)
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{
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// Draw something to show the starting point
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p.drawRect(startPoint.x()-2, startPoint.y()-2, 4, 4);
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p.fillRect(startPoint.x()-2, startPoint.y()-2, 4, 4,
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TQBrush(black));
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}
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p.drawLine(startPoint, endPoint);
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drawArrowHead(startPoint, endPoint, p);
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startCell = endCell;
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}
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p.end();
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TQFrame::paintEvent(ev);
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}
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TQPoint GestureDrawer::lookupCellCoords(TQ_UINT32 cell)
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{
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// First divide the widget into thirds, horizontally and vertically
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TQ_UINT32 w = width();
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TQ_UINT32 h = height();
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TQ_UINT32 wThird = w / 3;
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TQ_UINT32 hThird = h / 3;
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switch(cell)
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{
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case 1:
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return TQPoint(wThird/2, 2*hThird+hThird/2);
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case 2:
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return TQPoint(wThird+wThird/2, 2*hThird+hThird/2);
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case 3:
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return TQPoint(2*wThird+wThird/2, 2*hThird+hThird/2);
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case 4:
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return TQPoint(wThird/2, hThird+hThird/2);
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case 5:
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return TQPoint(wThird+wThird/2, hThird+hThird/2);
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case 6:
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return TQPoint(2*wThird+wThird/2, hThird+hThird/2);
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case 7:
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return TQPoint(wThird/2, hThird/2);
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case 8:
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return TQPoint(wThird+wThird/2, hThird/2);
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case 9:
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return TQPoint(2*wThird+wThird/2, hThird/2);
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}
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return TQPoint(0, 0);
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}
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void GestureDrawer::drawArrowHead(TQPoint &start, TQPoint &end,
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TQPainter &p)
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{
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int deltaX = end.x() - start.x();
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int deltaY = end.y() - start.y();
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if (deltaY == 0)
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{
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// horizontal line
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int offset = 0;
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if (deltaX > 0)
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offset = -3;
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else
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offset = 3;
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p.drawLine(TQPoint(end.x()+offset, end.y()+2), end);
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p.drawLine(TQPoint(end.x()+offset, end.y()-2), end);
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}
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else if (deltaX == 0)
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{
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// vertical line
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int offset = 0;
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if (deltaY > 0)
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offset = -3;
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else
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offset = +3;
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p.drawLine(TQPoint(end.x()+2, end.y()+offset), end);
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p.drawLine(TQPoint(end.x()-2, end.y()+offset), end);
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}
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else
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{
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// diagnal - The math would be pretty complex, so don't do anything
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}
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}
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} // namespace KHotKeys
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#include "gesturedrawer.moc"
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