comparison: src/analog/widgetwithbackground.cpp
src/analog/widgetwithbackground.cpp
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| 1 /*************************************************************************** | |
| 2 * Copyright (C) 2006-2008 by Tomasz Ziobrowski * | |
| 3 * http://www.3electrons.com * | |
| 4 * e-mail: t.ziobrowski@3electrons.com * | |
| 5 * * | |
| 6 * * | |
| 7 * This program is free software; you can redistribute it and/or modify * | |
| 8 * it under the terms of the GNU General Public License as published by * | |
| 9 * the Free Software Foundation; either version 2 of the License, or * | |
| 10 * (at your option) any later version. * | |
| 11 * * | |
| 12 * This program is distributed in the hope that it will be useful, * | |
| 13 * but WITHOUT ANY WARRANTY; without even the implied warranty of * | |
| 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * | |
| 15 * GNU General Public License for more details. * | |
| 16 * * | |
| 17 * You should have received a copy of the GNU General Public License * | |
| 18 * along with this program; if not, write to the * | |
| 19 * Free Software Foundation, Inc., * | |
| 20 * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. * | |
| 21 ***************************************************************************/ | |
| 22 | |
| 23 #include <QtGui> | |
| 24 #include "widgetwithbackground.h" | |
| 25 | |
| 26 WidgetWithBackground::WidgetWithBackground(QWidget * parent) : QWidget(parent) | |
| 27 { | |
| 28 m_pixmap = new QPixmap(size()); | |
| 29 m_modified = false; | |
| 30 } | |
| 31 | |
| 32 WidgetWithBackground::~WidgetWithBackground() | |
| 33 { | |
| 34 if (m_pixmap) | |
| 35 { | |
| 36 delete m_pixmap; | |
| 37 m_pixmap = NULL; | |
| 38 } | |
| 39 } | |
| 40 | |
| 41 void WidgetWithBackground::drawBackground() | |
| 42 { | |
| 43 if (m_pixmap->size() != size() || m_modified ) | |
| 44 { | |
| 45 delete m_pixmap; | |
| 46 m_pixmap = new QPixmap(size()); | |
| 47 m_modified=true; // by wiadomo bylo że jest przemalowywane tlo | |
| 48 repaintBackground(); | |
| 49 m_modified=false; | |
| 50 } | |
| 51 QPainter painter(this); | |
| 52 painter.drawPixmap(0,0,*m_pixmap); | |
| 53 } | |
| 54 | |
| 55 void WidgetWithBackground::updateWithBackground() | |
| 56 { | |
| 57 m_modified=true; | |
| 58 update(); | |
| 59 } | |
| 60 | |
| 61 bool WidgetWithBackground::doRepaintBackground() | |
| 62 { | |
| 63 return m_modified; | |
| 64 } | |
| 65 | |
| 66 void WidgetWithBackground::repaintBackground() | |
| 67 { | |
| 68 m_pixmap->fill(QColor(0,0,0,0)); | |
| 69 QPainter painter(m_pixmap); | |
| 70 paintBackground(painter); | |
| 71 } |
