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/* -*- c-basic-offset: 4 indent-tabs-mode: nil -*- vi:set ts=8 sts=4 sw=4: */
/*
Rosegarden
A MIDI and audio sequencer and musical notation editor.
This program is Copyright 2000-2008
Guillaume Laurent <[email protected]>,
Chris Cannam <[email protected]>,
Richard Bown <[email protected]>
The moral rights of Guillaume Laurent, Chris Cannam, and Richard
Bown to claim authorship of this work have been asserted.
This file is based on code from KGhostView, Copyright 1997-2002
Markkhu Hihnala <[email protected]>
and the KGhostView authors.
Other copyrights also apply to some parts of this work. Please
see the AUTHORS file and individual file headers for details.
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License as
published by the Free Software Foundation; either version 2 of the
License, or (at your option) any later version. See the file
COPYING included with this distribution for more information.
*/
#include "ScrollBox.h"
#include <qapplication.h>
#include <qframe.h>
#include <qimage.h>
#include <qpainter.h>
#include <qpixmap.h>
#include <qpoint.h>
#include <qrect.h>
#include <qsize.h>
#include <qwidget.h>
namespace Rosegarden
{
ScrollBox::ScrollBox(QWidget* parent, SizeMode sizeMode, const char* name) :
QFrame(parent, name),
m_sizeMode(sizeMode)
{
setFrameStyle(Panel | Sunken);
}
void ScrollBox::mousePressEvent(QMouseEvent* e)
{
m_mouse = e->pos();
if (e->button() == RightButton)
emit button3Pressed();
if (e->button() == MidButton)
emit button2Pressed();
}
void ScrollBox::mouseMoveEvent(QMouseEvent* e)
{
if (e->state() != LeftButton)
return ;
int dx = (e->pos().x() - m_mouse.x()) * m_pagesize.width() / width();
int dy = (e->pos().y() - m_mouse.y()) * m_pagesize.height() / height();
emit valueChanged(QPoint(m_viewpos.x() + dx, m_viewpos.y() + dy));
emit valueChangedRelative(dx, dy);
m_mouse = e->pos();
}
void ScrollBox::drawContents(QPainter* paint)
{
if (m_pagesize.isEmpty())
return ;
QRect c(contentsRect());
paint->setPen(Qt::red);
int len = m_pagesize.width();
int x = c.x() + c.width() * m_viewpos.x() / len;
int w = c.width() * m_viewsize.width() / len ;
if (w > c.width())
w = c.width();
len = m_pagesize.height();
int y = c.y() + c.height() * m_viewpos.y() / len;
int h = c.height() * m_viewsize.height() / len;
if (h > c.height())
h = c.height();
paint->drawRect(x, y, w, h);
}
void ScrollBox::setPageSize(const QSize& s)
{
m_pagesize = s;
setFixedWidth(100);
setFixedHeight(100);
int maxWidth = int(QApplication::desktop()->width() * 0.75);
int maxHeight = int(QApplication::desktop()->height() * 0.75);
if (m_sizeMode == FixWidth) {
int height = s.height() * width() / s.width();
if (height > maxHeight) {
setFixedWidth(width() * maxHeight / height);
height = maxHeight;
}
setFixedHeight(height);
} else {
int width = s.width() * height() / s.height();
if (width > maxWidth) {
setFixedHeight(height() * maxWidth / width);
width = maxWidth;
}
setFixedWidth(width);
}
repaint();
}
void ScrollBox::setViewSize(const QSize& s)
{
m_viewsize = s;
repaint();
}
void ScrollBox::setViewPos(const QPoint& pos)
{
m_viewpos = pos;
repaint();
}
void ScrollBox::setViewX(int x)
{
m_viewpos = QPoint(x, m_viewpos.y());
repaint();
}
void ScrollBox::setViewY(int y)
{
m_viewpos = QPoint(m_viewpos.x(), y);
repaint();
}
void ScrollBox::setThumbnail(QPixmap img)
{
setPaletteBackgroundPixmap(img.convertToImage().smoothScale(size()));
}
}
#include "ScrollBox.moc"
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