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// -*- c-basic-offset: 4 -*-
/*
Rosegarden-4
A sequencer and musical notation editor.
This program is Copyright 2000-2005
Guillaume Laurent <glaurent@telegraph-road.org>,
Chris Cannam <cannam@all-day-breakfast.com>,
Richard Bown <bownie@bownie.com>
The moral right of the authors to claim authorship of this work
has been asserted.
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 <qpainter.h>
#include "textruler.h"
#include "colours.h"
#include "rosestrings.h"
#include "rosedebug.h"
#include "Event.h"
#include "Segment.h"
#include "NotationTypes.h"
#include "RulerScale.h"
using Rosegarden::RulerScale;
using Rosegarden::Segment;
using Rosegarden::Event;
using Rosegarden::Text;
using Rosegarden::String;
using Rosegarden::timeT;
TextRuler::TextRuler(RulerScale *rulerScale,
Segment *segment,
int height,
QWidget *parent,
const char *name)
: QWidget(parent, name),
m_height(height),
m_currentXOffset(0),
m_width(-1),
m_segment(segment),
m_rulerScale(rulerScale),
m_font("helvetica", 12),
m_fontMetrics(m_font)
{
m_mySegmentMaybe = (m_segment->getComposition() != 0);
setBackgroundColor(Rosegarden::GUIPalette::getColour(Rosegarden::GUIPalette::TextRulerBackground));
m_font.setPixelSize(10);
}
TextRuler::~TextRuler()
{
if (m_mySegmentMaybe && !m_segment->getComposition()) {
delete m_segment;
}
}
void
TextRuler::slotScrollHoriz(int x)
{
int w = width(), h = height();
int dx = x - (-m_currentXOffset);
m_currentXOffset = -x;
if (dx > w*3/4 || dx < -w*3/4) {
update();
return;
}
if (dx > 0) { // moving right, so the existing stuff moves left
bitBlt(this, 0, 0, this, dx, 0, w-dx, h);
repaint(w-dx, 0, dx, h);
} else { // moving left, so the existing stuff moves right
bitBlt(this, -dx, 0, this, 0, 0, w+dx, h);
repaint(0, 0, -dx, h);
}
}
QSize
TextRuler::sizeHint() const
{
double width =
m_rulerScale->getBarPosition(m_rulerScale->getLastVisibleBar()) +
m_rulerScale->getBarWidth(m_rulerScale->getLastVisibleBar());
QSize res(std::max(int(width), m_width), m_height);
return res;
}
QSize
TextRuler::minimumSizeHint() const
{
double firstBarWidth = m_rulerScale->getBarWidth(0);
QSize res = QSize(int(firstBarWidth), m_height);
return res;
}
void
TextRuler::paintEvent(QPaintEvent* e)
{
QPainter paint(this);
paint.setPen(Rosegarden::GUIPalette::getColour(Rosegarden::GUIPalette::TextRulerForeground));
paint.setClipRegion(e->region());
paint.setClipRect(e->rect().normalize());
QRect clipRect = paint.clipRegion().boundingRect();
timeT from = m_rulerScale->getTimeForX
(clipRect.x() - m_currentXOffset - 100);
timeT to = m_rulerScale->getTimeForX
(clipRect.x() + clipRect.width() - m_currentXOffset + 100);
for (Segment::iterator i = m_segment->findTime(from);
i != m_segment->findTime(to) && i != m_segment->end(); ++i) {
if (!(*i)->isa(Text::EventType)) continue;
std::string text;
if (!(*i)->get<String>(Text::TextPropertyName, text)) {
RG_DEBUG
<< "Warning: TextRuler::paintEvent: No text in text event"
<< endl;
continue;
}
QRect bounds = m_fontMetrics.boundingRect(strtoqstr(text));
double x = m_rulerScale->getXForTime((*i)->getAbsoluteTime()) +
m_currentXOffset - bounds.width()/2;
int y = height()/2 + bounds.height()/2;
paint.drawText(static_cast<int>(x), y, strtoqstr(text));
}
}
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