1 /***************************************************************************
2 * Copyright (C) 2007 by Jean-Baptiste Mardelle (jb@kdenlive.org) *
4 * This program is free software; you can redistribute it and/or modify *
5 * it under the terms of the GNU General Public License as published by *
6 * the Free Software Foundation; either version 2 of the License, or *
7 * (at your option) any later version. *
9 * This program is distributed in the hope that it will be useful, *
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
12 * GNU General Public License for more details. *
14 * You should have received a copy of the GNU General Public License *
15 * along with this program; if not, write to the *
16 * Free Software Foundation, Inc., *
17 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA *
18 ***************************************************************************/
21 #include "smallruler.h"
25 #include <QMouseEvent>
26 #include <QStylePainter>
28 SmallRuler::SmallRuler(QWidget *parent)
29 : QWidget(parent), m_scale(1), m_maxval(25)
33 m_zoneColor = QColor(133, 255, 143);
36 void SmallRuler::adjustScale(int maximum)
39 m_scale = (double) width() / (double) maximum;
40 if (m_scale == 0) m_scale = 1;
45 } else if (m_scale > 0.09) {
52 m_cursorPosition = m_cursorFramePosition * m_scale;
56 void SmallRuler::setZone(int start, int end)
59 if (end != -1 && start >= end) {
60 m_zoneEnd = qMin(m_maxval, end + (start - m_zoneStart));
62 } else if (end == -1 && start >= m_zoneEnd) {
63 m_zoneEnd = qMin(m_maxval, m_zoneEnd + (start - m_zoneStart));
65 } else m_zoneStart = start;
68 if (start != -1 && end <= start) {
69 m_zoneStart = qMax(0, start - (m_zoneEnd - end));
71 } else if (start == -1 && end <= m_zoneStart) {
72 m_zoneStart = qMax(0, m_zoneStart - (m_zoneEnd - end));
74 } else m_zoneEnd = end;
79 QPoint SmallRuler::zone()
81 return QPoint(m_zoneStart, m_zoneEnd);
85 void SmallRuler::mousePressEvent(QMouseEvent * event)
87 const int pos = event->x() / m_scale;
88 if (event->button() == Qt::RightButton) {
89 // Right button clicked, move selection zone
90 if (qAbs(pos - m_zoneStart) < qAbs(pos - m_zoneEnd)) m_zoneStart = pos;
92 emit zoneChanged(QPoint(m_zoneStart, m_zoneEnd));
95 } else emit seekRenderer((int) pos);
99 void SmallRuler::mouseMoveEvent(QMouseEvent * event)
101 const int pos = event->x() / m_scale;
102 if (event->buttons() & Qt::LeftButton) emit seekRenderer((int) pos);
105 void SmallRuler::slotNewValue(int value)
107 m_cursorFramePosition = value;
108 int oldPos = m_cursorPosition;
109 m_cursorPosition = value * m_scale;
110 if (oldPos == m_cursorPosition) return;
111 const int offset = 6;
112 const int x = qMin(oldPos, m_cursorPosition);
113 const int w = qAbs(oldPos - m_cursorPosition);
114 update(x - offset, 9, w + 2 * offset, 6);
118 void SmallRuler::resizeEvent(QResizeEvent *)
120 adjustScale(m_maxval);
124 void SmallRuler::paintEvent(QPaintEvent *e)
132 p.setPen(palette().dark().color());
134 const int zoneStart = (int)(m_zoneStart * m_scale);
135 const int zoneEnd = (int)(m_zoneEnd * m_scale);
137 p.fillRect(zoneStart, height() / 2, zoneEnd - zoneStart, height() / 2, m_zoneColor);
140 // draw the little marks
141 fend = m_scale * m_small;
142 if (fend > 2) for (f = 0; f < width(); f += fend) {
143 p.drawLine((int)f, 1, (int)f, 3);
147 fend = m_scale * m_medium;
148 if (fend > 2) for (f = 0; f < width(); f += fend) {
149 p.drawLine((int)f, 1, (int)f, 5);
155 pa.setPoints(3, m_cursorPosition - 5, 14, m_cursorPosition + 5, 14, m_cursorPosition/*+0*/, 9);
156 p.setBrush(palette().dark().color());
160 #include "smallruler.moc"