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authortoma <toma@283d02a7-25f6-0310-bc7c-ecb5cbfe19da>2009-11-25 17:56:58 +0000
committertoma <toma@283d02a7-25f6-0310-bc7c-ecb5cbfe19da>2009-11-25 17:56:58 +0000
commit4aed2c8219774f5d797760606b8489a92ddc5163 (patch)
tree3f8c130f7d269626bf6a9447407ef6c35954426a /kcontrol/joystick/poswidget.cpp
downloadtdebase-4aed2c8219774f5d797760606b8489a92ddc5163.tar.gz
tdebase-4aed2c8219774f5d797760606b8489a92ddc5163.zip
Copy the KDE 3.5 branch to branches/trinity for new KDE 3.5 features.
BUG:215923 git-svn-id: svn://anonsvn.kde.org/home/kde/branches/trinity/kdebase@1054174 283d02a7-25f6-0310-bc7c-ecb5cbfe19da
Diffstat (limited to 'kcontrol/joystick/poswidget.cpp')
-rw-r--r--kcontrol/joystick/poswidget.cpp138
1 files changed, 138 insertions, 0 deletions
diff --git a/kcontrol/joystick/poswidget.cpp b/kcontrol/joystick/poswidget.cpp
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+/***************************************************************************
+ * Copyright (C) 2003 by Martin Koller *
+ * m.koller@surfeu.at *
+ * This file is part of the KDE Control Center Module for Joysticks *
+ * *
+ * 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 "poswidget.h"
+
+#include <qpainter.h>
+
+#define XY_WIDTH 220
+#define MARK_WIDTH 10
+
+//-----------------------------------------------------------------
+
+PosWidget::PosWidget(QWidget *parent, const char *name)
+ : QWidget(parent, name, WRepaintNoErase), x(0), y(0), trace(false)
+{
+ setMinimumSize(XY_WIDTH, XY_WIDTH);
+ setMaximumSize(XY_WIDTH, XY_WIDTH);
+ setPaletteBackgroundColor(Qt::white);
+}
+
+//-----------------------------------------------------------------
+
+void PosWidget::paintEvent(QPaintEvent *)
+{
+ QPainter paint(this);
+
+ paint.drawRect(0, 0, width(), height());
+ paint.setPen(Qt::gray);
+
+ // draw a center grid
+ paint.drawLine(XY_WIDTH/2, 1,
+ XY_WIDTH/2, XY_WIDTH - 2);
+
+ paint.drawLine(1, XY_WIDTH/2,
+ XY_WIDTH - 2, XY_WIDTH/2);
+
+ // draw the current position marker
+ paint.setPen(Qt::blue);
+
+ paint.drawLine(x - MARK_WIDTH/2, y - MARK_WIDTH/2,
+ x + MARK_WIDTH/2, y + MARK_WIDTH/2);
+
+ paint.drawLine(x - MARK_WIDTH/2, y + MARK_WIDTH/2,
+ x + MARK_WIDTH/2, y - MARK_WIDTH/2);
+}
+
+//-----------------------------------------------------------------
+
+void PosWidget::changeX(int newX)
+{
+ // transform coordinates from joystick to widget coordinates
+ newX = int((newX/65535.0)*XY_WIDTH + XY_WIDTH/2);
+
+ if ( x == newX ) return; // avoid unnecessary redraw
+
+ eraseOld();
+
+ x = newX;
+}
+
+//-----------------------------------------------------------------
+
+void PosWidget::changeY(int newY)
+{
+ // transform coordinates from joystick to widget coordinates
+ newY = int((newY/65535.0)*XY_WIDTH + XY_WIDTH/2);
+
+ if ( y == newY ) return; // avoid unnecessary redraw
+
+ eraseOld();
+
+ y = newY;
+}
+
+//-----------------------------------------------------------------
+
+void PosWidget::showTrace(bool t)
+{
+ trace = t;
+
+ if ( !trace )
+ {
+ erase();
+ update();
+ }
+}
+
+//-----------------------------------------------------------------
+
+void PosWidget::eraseOld()
+{
+ QPainter paint(this);
+
+ //paint.eraseRect(x - MARK_WIDTH/2, y - MARK_WIDTH/2, MARK_WIDTH + 1, MARK_WIDTH + 1);
+
+ // erase previous cross (don't use eraseRect() so that trace flags will be not destroyed so much)
+ paint.setPen(Qt::white);
+
+ paint.drawLine(x - MARK_WIDTH/2, y - MARK_WIDTH/2,
+ x + MARK_WIDTH/2, y + MARK_WIDTH/2);
+
+ paint.drawLine(x - MARK_WIDTH/2, y + MARK_WIDTH/2,
+ x + MARK_WIDTH/2, y - MARK_WIDTH/2);
+
+ if ( trace ) // show previous position with a smaller black cross
+ {
+ paint.setPen(Qt::black);
+
+ paint.drawLine(x - 2, y - 2,
+ x + 2, y + 2);
+
+ paint.drawLine(x - 2, y + 2,
+ x + 2, y - 2);
+ }
+
+ update();
+}
+
+//-----------------------------------------------------------------
+
+#include "poswidget.moc"