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139 lines
4.2 KiB
139 lines
4.2 KiB
/***************************************************************************
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* Copyright (C) 2003 by Martin Koller *
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* m.koller@surfeu.at *
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* This file is part of the Trinity Control Center Module for Joysticks *
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* *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation; either version 2 of the License, or *
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* (at your option) any later version. *
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* *
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* This program is distributed in the hope that it will be useful, *
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* but WITHOUT ANY WARRANTY; without even the implied warranty of *
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
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* GNU General Public License for more details. *
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* *
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* You should have received a copy of the GNU General Public License *
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* along with this program; if not, write to the *
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* Free Software Foundation, Inc., *
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. *
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***************************************************************************/
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#include "poswidget.h"
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#include <tqpainter.h>
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#define XY_WIDTH 220
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#define MARK_WIDTH 10
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//-----------------------------------------------------------------
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PosWidget::PosWidget(TQWidget *parent, const char *name)
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: TQWidget(parent, name, WRepaintNoErase), x(0), y(0), trace(false)
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{
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setMinimumSize(XY_WIDTH, XY_WIDTH);
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setMaximumSize(XY_WIDTH, XY_WIDTH);
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setPaletteBackgroundColor(Qt::white);
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}
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//-----------------------------------------------------------------
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void PosWidget::paintEvent(TQPaintEvent *)
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{
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TQPainter paint(this);
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paint.drawRect(0, 0, width(), height());
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paint.setPen(Qt::gray);
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// draw a center grid
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paint.drawLine(XY_WIDTH/2, 1,
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XY_WIDTH/2, XY_WIDTH - 2);
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paint.drawLine(1, XY_WIDTH/2,
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XY_WIDTH - 2, XY_WIDTH/2);
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// draw the current position marker
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paint.setPen(Qt::blue);
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paint.drawLine(x - MARK_WIDTH/2, y - MARK_WIDTH/2,
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x + MARK_WIDTH/2, y + MARK_WIDTH/2);
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paint.drawLine(x - MARK_WIDTH/2, y + MARK_WIDTH/2,
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x + MARK_WIDTH/2, y - MARK_WIDTH/2);
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}
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//-----------------------------------------------------------------
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void PosWidget::changeX(int newX)
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{
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// transform coordinates from joystick to widget coordinates
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newX = int((newX/65535.0)*XY_WIDTH + XY_WIDTH/2);
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if ( x == newX ) return; // avoid unnecessary redraw
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eraseOld();
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x = newX;
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}
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//-----------------------------------------------------------------
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void PosWidget::changeY(int newY)
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{
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// transform coordinates from joystick to widget coordinates
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newY = int((newY/65535.0)*XY_WIDTH + XY_WIDTH/2);
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if ( y == newY ) return; // avoid unnecessary redraw
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eraseOld();
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y = newY;
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}
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//-----------------------------------------------------------------
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void PosWidget::showTrace(bool t)
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{
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trace = t;
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if ( !trace )
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{
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erase();
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update();
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}
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}
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//-----------------------------------------------------------------
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void PosWidget::eraseOld()
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{
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TQPainter paint(this);
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//paint.eraseRect(x - MARK_WIDTH/2, y - MARK_WIDTH/2, MARK_WIDTH + 1, MARK_WIDTH + 1);
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// erase previous cross (don't use eraseRect() so that trace flags will be not destroyed so much)
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paint.setPen(Qt::white);
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paint.drawLine(x - MARK_WIDTH/2, y - MARK_WIDTH/2,
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x + MARK_WIDTH/2, y + MARK_WIDTH/2);
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paint.drawLine(x - MARK_WIDTH/2, y + MARK_WIDTH/2,
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x + MARK_WIDTH/2, y - MARK_WIDTH/2);
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if ( trace ) // show previous position with a smaller black cross
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{
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paint.setPen(Qt::black);
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paint.drawLine(x - 2, y - 2,
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x + 2, y + 2);
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paint.drawLine(x - 2, y + 2,
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x + 2, y - 2);
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}
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update();
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}
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//-----------------------------------------------------------------
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#include "poswidget.moc"
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