1 /**************************************************************************** 2 ** 3 ** Copyright (C) 2015 The Qt Company Ltd. 4 ** Contact: http://www.qt.io/licensing/ 5 ** 6 ** This file is part of the test suite of the Qt Toolkit. 7 ** 8 ** $QT_BEGIN_LICENSE:LGPL$ 9 ** Commercial License Usage 10 ** Licensees holding valid commercial Qt licenses may use this file in 11 ** accordance with the commercial license agreement provided with the 12 ** Software or, alternatively, in accordance with the terms contained in 13 ** a written agreement between you and The Qt Company. For licensing terms 14 ** and conditions see http://www.qt.io/terms-conditions. For further 15 ** information use the contact form at http://www.qt.io/contact-us. 16 ** 17 ** GNU Lesser General Public License Usage 18 ** Alternatively, this file may be used under the terms of the GNU Lesser 19 ** General Public License version 2.1 or version 3 as published by the Free 20 ** Software Foundation and appearing in the file LICENSE.LGPLv21 and 21 ** LICENSE.LGPLv3 included in the packaging of this file. Please review the 22 ** following information to ensure the GNU Lesser General Public License 23 ** requirements will be met: https://www.gnu.org/licenses/lgpl.html and 24 ** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. 25 ** 26 ** As a special exception, The Qt Company gives you certain additional 27 ** rights. These rights are described in The Qt Company LGPL Exception 28 ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. 29 ** 30 ** GNU General Public License Usage 31 ** Alternatively, this file may be used under the terms of the GNU 32 ** General Public License version 3.0 as published by the Free Software 33 ** Foundation and appearing in the file LICENSE.GPL included in the 34 ** packaging of this file. Please review the following information to 35 ** ensure the GNU General Public License version 3.0 requirements will be 36 ** met: http://www.gnu.org/copyleft/gpl.html. 37 ** 38 ** $QT_END_LICENSE$ 39 ** 40 ****************************************************************************/ 41 42 #include <QtGui> 43 class StaticWidget : public QWidget 44 { 45 Q_OBJECT 46 public: 47 int hue; 48 bool pressed; 49 StaticWidget(QWidget *parent = 0) QWidget(parent)50 :QWidget(parent) 51 { 52 setAttribute(Qt::WA_StaticContents); 53 setAttribute(Qt::WA_OpaquePaintEvent); 54 hue = 200; 55 pressed = false; 56 } 57 58 // Update 4 rects in a checkerboard pattern, using either 59 // a QRegion or separate rects (see the useRegion switch) updatePattern(QPoint pos)60 void updatePattern(QPoint pos) 61 { 62 const int rectSize = 10; 63 QRect rect(pos.x() - rectSize, pos.y() - rectSize, rectSize *2, rectSize * 2); 64 65 QVector<QRect> updateRects; 66 updateRects.append(rect.translated(rectSize * 2, rectSize * 2)); 67 updateRects.append(rect.translated(rectSize * 2, -rectSize * 2)); 68 updateRects.append(rect.translated(-rectSize * 2, rectSize * 2)); 69 updateRects.append(rect.translated(-rectSize * 2, -rectSize * 2)); 70 71 72 bool useRegion = false; 73 if (useRegion) { 74 QRegion region; 75 region.setRects(updateRects.data(), 4); 76 update(region); 77 } else { 78 foreach (QRect rect, updateRects) 79 update(rect); 80 } 81 } 82 83 resizeEvent(QResizeEvent *)84 void resizeEvent(QResizeEvent *) 85 { 86 // qDebug() << "static widget resize from" << e->oldSize() << "to" << e->size(); 87 } 88 mousePressEvent(QMouseEvent * event)89 void mousePressEvent(QMouseEvent *event) 90 { 91 // qDebug() << "mousePress at" << event->pos(); 92 pressed = true; 93 updatePattern(event->pos()); 94 } 95 mouseReleaseEvent(QMouseEvent *)96 void mouseReleaseEvent(QMouseEvent *) 97 { 98 pressed = false; 99 } 100 mouseMoveEvent(QMouseEvent * event)101 void mouseMoveEvent(QMouseEvent *event) 102 { 103 if (pressed) 104 updatePattern(event->pos()); 105 } 106 paintEvent(QPaintEvent * e)107 void paintEvent(QPaintEvent *e) 108 { 109 QPainter p(this); 110 static int color = 200; 111 color = (color + 41) % 205 + 50; 112 // color = ((color + 45) %150) + 100; 113 qDebug() << "static widget repaint" << e->rect(); 114 if (pressed) 115 p.fillRect(e->rect(), QColor::fromHsv(100, 255, color)); 116 else 117 p.fillRect(e->rect(), QColor::fromHsv(hue, 255, color)); 118 p.setPen(QPen(QColor(Qt::white))); 119 120 for (int y = e->rect().top(); y <= e->rect().bottom() + 1; ++y) { 121 if (y % 20 == 0) 122 p.drawLine(e->rect().left(), y, e->rect().right(), y); 123 } 124 125 for (int x = e->rect().left(); x <= e->rect().right() +1 ; ++x) { 126 if (x % 20 == 0) 127 p.drawLine(x, e->rect().top(), x, e->rect().bottom()); 128 } 129 } 130 }; 131