1 files changed, 161 insertions, 0 deletions
diff --git a/khotkeys/kcontrol/gesturedrawer.cpp b/khotkeys/kcontrol/gesturedrawer.cpp
new file mode 100644
index 000000000..646d2e469
--- /dev/null
+++ b/khotkeys/kcontrol/gesturedrawer.cpp
@@ -0,0 +1,161 @@
+/****************************************************************************
+
+ KHotKeys
+ 
+ Copyright (C) 2003 Mike Pilone <[email protected]>
+ Copyright (C) 2003 Lubos Lunak <[email protected]>
+
+ Distributed under the terms of the GNU General Public License version 2.
+ 
+****************************************************************************/
+
+#include <qcolor.h>
+#include <qpainter.h>
+
+#include "gesturedrawer.h"
+
+namespace KHotKeys
+{
+
+GestureDrawer::GestureDrawer(QWidget *parent, const char *name)
+  : QFrame(parent, name), _data(QString::null)
+    {
+    setBackgroundColor( colorGroup().base());
+    setFrameStyle(QFrame::Panel | QFrame::Sunken);
+    setMinimumSize(30, 30);
+    }
+
+GestureDrawer::~GestureDrawer()
+    {
+    }
+
+void GestureDrawer::setData(const QString &data)
+    {
+    _data = data;
+
+    repaint();
+    }
+
+void GestureDrawer::paintEvent(QPaintEvent *ev)
+    {
+  // Iterate through the data points and draw a line to each of them
+    Q_UINT32 startCell = 0;
+    Q_UINT32 endCell = 0;
+    QPoint startPoint;
+    QPoint endPoint;
+
+    QPainter p(this);
+
+    if (_data.length() > 0)
+        {
+        startCell = QString(_data[0]).toUInt();
+        }
+
+    for (Q_UINT32 index = 1; index < _data.length(); ++index)
+        {
+        endCell = QString(_data[index]).toUInt();
+
+        startPoint = lookupCellCoords(startCell);
+        endPoint = lookupCellCoords(endCell);
+
+        if (index == 1)
+            {
+      // Draw something to show the starting point
+            p.drawRect(startPoint.x()-2, startPoint.y()-2, 4, 4);
+            p.fillRect(startPoint.x()-2, startPoint.y()-2, 4, 4,
+                       QBrush(black));
+            }
+
+        p.drawLine(startPoint, endPoint);
+        drawArrowHead(startPoint, endPoint, p);
+
+        startCell = endCell;
+        }
+
+    p.end();
+
+    QFrame::paintEvent(ev);
+    }
+
+QPoint GestureDrawer::lookupCellCoords(Q_UINT32 cell)
+    {
+  // First divide the widget into thirds, horizontally and vertically
+    Q_UINT32 w = width();
+    Q_UINT32 h = height();
+
+    Q_UINT32 wThird = w / 3;
+    Q_UINT32 hThird = h / 3;
+
+    switch(cell)
+        {
+        case 1:
+            return QPoint(wThird/2, 2*hThird+hThird/2);
+
+        case 2:
+            return QPoint(wThird+wThird/2, 2*hThird+hThird/2);
+
+        case 3:
+            return QPoint(2*wThird+wThird/2, 2*hThird+hThird/2);
+
+        case 4:
+            return QPoint(wThird/2, hThird+hThird/2);
+
+        case 5:
+            return QPoint(wThird+wThird/2, hThird+hThird/2);
+
+        case 6:
+            return QPoint(2*wThird+wThird/2, hThird+hThird/2);
+
+        case 7:
+            return QPoint(wThird/2, hThird/2);
+
+        case 8:
+            return QPoint(wThird+wThird/2, hThird/2);
+
+        case 9:
+            return QPoint(2*wThird+wThird/2, hThird/2);
+        }
+
+    return QPoint(0, 0);
+    }
+
+void GestureDrawer::drawArrowHead(QPoint &start, QPoint &end,
+                                  QPainter &p)
+    {
+    int deltaX = end.x() - start.x();
+    int deltaY = end.y() - start.y();
+
+    if (deltaY == 0)
+        {
+    // horizontal line
+        int offset = 0;
+        if (deltaX > 0)
+          offset = -3;
+        else
+          offset = 3;
+
+        p.drawLine(QPoint(end.x()+offset, end.y()+2), end);
+        p.drawLine(QPoint(end.x()+offset, end.y()-2), end);
+        }
+    else if (deltaX == 0)
+        {
+    // vertical line
+        int offset = 0;
+        if (deltaY > 0)
+          offset = -3;
+        else
+          offset = +3;
+
+        p.drawLine(QPoint(end.x()+2, end.y()+offset), end);
+        p.drawLine(QPoint(end.x()-2, end.y()+offset), end);
+        }
+    else
+        {
+    // diagnal - The math would be pretty complex, so don't do anything
+        }
+
+    }
+
+} // namespace KHotKeys
+
+#include "gesturedrawer.moc"