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) {
34 void SmallRuler::adjustScale(int maximum) {
36 m_scale = (double) width() / (double) maximum;
37 if (m_scale == 0) m_scale = 1;
42 } else if (m_scale > 0.09) {
49 m_cursorPosition = m_cursorFramePosition * m_scale;
53 void SmallRuler::setZone(int start, int end) {
55 if (end != -1 && start >= end) {
56 m_zoneEnd = qMin(m_maxval, end + (start - m_zoneStart));
58 } else if (end == -1 && start >= m_zoneEnd) {
59 m_zoneEnd = qMin(m_maxval, m_zoneEnd + (start - m_zoneStart));
61 } else m_zoneStart = start;
64 if (start != -1 && end <= start) {
65 m_zoneStart = qMax(0, start - (m_zoneEnd - end));
67 } else if (start == -1 && end <= m_zoneStart) {
68 m_zoneStart = qMax(0, m_zoneStart - (m_zoneEnd - end));
70 } else m_zoneEnd = end;
75 QPoint SmallRuler::zone() {
76 return QPoint(m_zoneStart, m_zoneEnd);
80 void SmallRuler::mousePressEvent(QMouseEvent * event) {
81 const int pos = event->x() / m_scale;
82 if (event->button() == Qt::RightButton) {
83 // Right button clicked, move selection zone
84 if (qAbs(pos - m_zoneStart) < qAbs(pos - m_zoneEnd)) m_zoneStart = pos;
86 emit zoneChanged(QPoint(m_zoneStart, m_zoneEnd));
89 } else emit seekRenderer((int) pos);
93 void SmallRuler::mouseMoveEvent(QMouseEvent * event) {
94 const int pos = event->x() / m_scale;
95 if (event->buttons() & Qt::LeftButton) emit seekRenderer((int) pos);
98 void SmallRuler::slotNewValue(int value) {
99 m_cursorFramePosition = value;
100 int oldPos = m_cursorPosition;
101 m_cursorPosition = value * m_scale;
102 if (oldPos == m_cursorPosition) return;
103 const int offset = 6;
104 const int x = qMin(oldPos, m_cursorPosition);
105 const int w = qAbs(oldPos - m_cursorPosition);
106 update(x - offset, 9, w + 2 * offset, 6);
110 void SmallRuler::resizeEvent(QResizeEvent *) {
111 adjustScale(m_maxval);
115 void SmallRuler::paintEvent(QPaintEvent *e) {
122 p.setPen(palette().dark().color());
124 const int zoneStart = (int)(m_zoneStart * m_scale);
125 const int zoneEnd = (int)(m_zoneEnd * m_scale);
127 p.fillRect(QRect(zoneStart, height() / 2, zoneEnd - zoneStart, height() / 2), QBrush(QColor(133, 255, 143)));
130 // draw the little marks
131 fend = m_scale * m_small;
132 if (fend > 2) for (f = 0; f < width(); f += fend) {
133 p.drawLine((int)f, 1, (int)f, 3);
137 fend = m_scale * m_medium;
138 if (fend > 2) for (f = 0; f < width(); f += fend) {
139 p.drawLine((int)f, 1, (int)f, 5);
145 pa.setPoints(3, m_cursorPosition - 5, 14, m_cursorPosition + 5, 14, m_cursorPosition/*+0*/, 9);
146 p.setBrush(palette().dark().color());
150 #include "smallruler.moc"