Chris@0: /* -*- c-basic-offset: 4 -*-  vi:set ts=8 sts=4 sw=4: */
Chris@0: 
Chris@0: /*
Chris@0:     A waveform viewer and audio annotation editor.
Chris@0:     Chris Cannam, Queen Mary University of London, 2005
Chris@0:    
Chris@0:     This is experimental software.  Not for distribution.
Chris@0: */
Chris@0: 
Chris@0: #include "TimeRulerLayer.h"
Chris@0: 
Chris@0: #include "base/Model.h"
Chris@0: #include "base/RealTime.h"
Chris@0: #include "base/View.h"
Chris@0: 
Chris@0: #include <QPainter>
Chris@0: 
Chris@0: #include <iostream>
Chris@0: 
Chris@0: using std::cerr;
Chris@0: using std::endl;
Chris@0: 
Chris@0: TimeRulerLayer::TimeRulerLayer(View *w) :
Chris@0:     Layer(w),
Chris@0:     m_model(0),
Chris@0:     m_colour(Qt::black),
Chris@0:     m_labelHeight(LabelTop)
Chris@0: {
Chris@0:     m_view->addLayer(this);
Chris@0: }
Chris@0: 
Chris@0: void
Chris@0: TimeRulerLayer::setModel(Model *model)
Chris@0: {
Chris@0:     if (m_model == model) return;
Chris@0:     m_model = model;
Chris@0:     emit modelReplaced();
Chris@0: }
Chris@0: 
Chris@0: void
Chris@0: TimeRulerLayer::setBaseColour(QColor colour)
Chris@0: {
Chris@0:     if (m_colour == colour) return;
Chris@0:     m_colour = colour;
Chris@0:     emit layerParametersChanged();
Chris@0: }
Chris@0: 
Chris@0: Layer::PropertyList
Chris@0: TimeRulerLayer::getProperties() const
Chris@0: {
Chris@0:     PropertyList list;
Chris@0:     list.push_back(tr("Colour"));
Chris@0:     return list;
Chris@0: }
Chris@0: 
Chris@0: Layer::PropertyType
Chris@0: TimeRulerLayer::getPropertyType(const PropertyName &name) const
Chris@0: {
Chris@0:     return ValueProperty;
Chris@0: }
Chris@0: 
Chris@0: int
Chris@0: TimeRulerLayer::getPropertyRangeAndValue(const PropertyName &name,
Chris@0: 					 int *min, int *max) const
Chris@0: {
Chris@0:     int deft = 0;
Chris@0: 
Chris@0:     if (name == tr("Colour")) {
Chris@0: 
Chris@0: 	*min = 0;
Chris@0: 	*max = 5;
Chris@0: 
Chris@0: 	if (m_colour == Qt::black) deft = 0;
Chris@0: 	else if (m_colour == Qt::darkRed) deft = 1;
Chris@0: 	else if (m_colour == Qt::darkBlue) deft = 2;
Chris@0: 	else if (m_colour == Qt::darkGreen) deft = 3;
Chris@0: 	else if (m_colour == QColor(200, 50, 255)) deft = 4;
Chris@0: 	else if (m_colour == QColor(255, 150, 50)) deft = 5;
Chris@0: 
Chris@0:     } else {
Chris@0: 	
Chris@0: 	deft = Layer::getPropertyRangeAndValue(name, min, max);
Chris@0:     }
Chris@0: 
Chris@0:     return deft;
Chris@0: }
Chris@0: 
Chris@0: QString
Chris@0: TimeRulerLayer::getPropertyValueLabel(const PropertyName &name,
Chris@0: 				    int value) const
Chris@0: {
Chris@0:     if (name == tr("Colour")) {
Chris@0: 	switch (value) {
Chris@0: 	default:
Chris@0: 	case 0: return tr("Black");
Chris@0: 	case 1: return tr("Red");
Chris@0: 	case 2: return tr("Blue");
Chris@0: 	case 3: return tr("Green");
Chris@0: 	case 4: return tr("Purple");
Chris@0: 	case 5: return tr("Orange");
Chris@0: 	}
Chris@0:     }
Chris@0:     return tr("<unknown>");
Chris@0: }
Chris@0: 
Chris@0: void
Chris@0: TimeRulerLayer::setProperty(const PropertyName &name, int value)
Chris@0: {
Chris@0:     if (name == tr("Colour")) {
Chris@0: 	switch (value) {
Chris@0: 	default:
Chris@0: 	case 0:	setBaseColour(Qt::black); break;
Chris@0: 	case 1: setBaseColour(Qt::darkRed); break;
Chris@0: 	case 2: setBaseColour(Qt::darkBlue); break;
Chris@0: 	case 3: setBaseColour(Qt::darkGreen); break;
Chris@0: 	case 4: setBaseColour(QColor(200, 50, 255)); break;
Chris@0: 	case 5: setBaseColour(QColor(255, 150, 50)); break;
Chris@0: 	}
Chris@0:     }
Chris@0: }
Chris@0: 
Chris@0: void
Chris@0: TimeRulerLayer::paint(QPainter &paint, QRect rect) const
Chris@0: {
Chris@0: //    std::cerr << "TimeRulerLayer::paint (" << rect.x() << "," << rect.y()
Chris@0: //	      << ") [" << rect.width() << "x" << rect.height() << "]" << std::endl;
Chris@0:     
Chris@0:     if (!m_model || !m_model->isOK()) return;
Chris@0: 
Chris@0:     int sampleRate = m_model->getSampleRate();
Chris@0:     if (!sampleRate) return;
Chris@0: 
Chris@0:     long startFrame = m_view->getStartFrame();
Chris@0:     long endFrame = m_view->getEndFrame();
Chris@0: 
Chris@0:     int zoomLevel = m_view->getZoomLevel();
Chris@0: 
Chris@0:     long rectStart = startFrame + (rect.x() - 100) * zoomLevel;
Chris@0:     long rectEnd = startFrame + (rect.x() + rect.width() + 100) * zoomLevel;
Chris@0:     if (rectStart < startFrame) rectStart = startFrame;
Chris@0:     if (rectEnd > endFrame) rectEnd = endFrame;
Chris@0: 
Chris@0: //    std::cerr << "TimeRulerLayer::paint: calling paint.save()" << std::endl;
Chris@0:     paint.save();
Chris@0: //!!!    paint.setClipRect(m_view->rect());
Chris@0: 
Chris@0:     int minPixelSpacing = 50;
Chris@0: 
Chris@0:     RealTime rtStart = RealTime::frame2RealTime(startFrame, sampleRate);
Chris@0:     RealTime rtEnd = RealTime::frame2RealTime(endFrame, sampleRate);
Chris@0: //    cerr << "startFrame " << startFrame << ", endFrame " << m_view->getEndFrame() << ", rtStart " << rtStart << ", rtEnd " << rtEnd << endl;
Chris@0:     int count = m_view->width() / minPixelSpacing;
Chris@0:     if (count < 1) count = 1;
Chris@0:     RealTime rtGap = (rtEnd - rtStart) / count;
Chris@0: //    cerr << "rtGap is " << rtGap << endl;
Chris@0: 
Chris@0:     int incms;
Chris@0:     bool quarter = false;
Chris@0: 
Chris@0:     if (rtGap.sec > 0) {
Chris@0: 	incms = 1000;
Chris@0: 	int s = rtGap.sec;
Chris@0: 	if (s > 0) { incms *= 5; s /= 5; }
Chris@0: 	if (s > 0) { incms *= 2; s /= 2; }
Chris@0: 	if (s > 0) { incms *= 6; s /= 6; quarter = true; }
Chris@0: 	if (s > 0) { incms *= 5; s /= 5; quarter = false; }
Chris@0: 	if (s > 0) { incms *= 2; s /= 2; }
Chris@0: 	if (s > 0) { incms *= 6; s /= 6; quarter = true; }
Chris@0: 	while (s > 0) {
Chris@0: 	    incms *= 10;
Chris@0: 	    s /= 10;
Chris@0: 	    quarter = false;
Chris@0: 	}
Chris@0:     } else {
Chris@0: 	incms = 1;
Chris@0: 	int ms = rtGap.msec();
Chris@0: 	if (ms > 0) { incms *= 10; ms /= 10; }
Chris@0: 	if (ms > 0) { incms *= 10; ms /= 10; }
Chris@0: 	if (ms > 0) { incms *= 5; ms /= 5; }
Chris@0: 	if (ms > 0) { incms *= 2; ms /= 2; }
Chris@0:     }
Chris@0: //    cerr << "incms is " << incms << endl;
Chris@0: 
Chris@0:     RealTime rt = RealTime::frame2RealTime(rectStart, sampleRate);
Chris@0:     long ms = rt.sec * 1000 + rt.msec();
Chris@0:     ms = (ms / incms) * incms - incms;
Chris@0: 
Chris@0:     RealTime incRt = RealTime(incms / 1000, (incms % 1000) * 1000000);
Chris@0:     long incFrame = RealTime::realTime2Frame(incRt, sampleRate);
Chris@0:     int incX = incFrame / zoomLevel;
Chris@0:     int ticks = 10;
Chris@0:     if (incX < minPixelSpacing * 2) {
Chris@0: 	ticks = quarter ? 4 : 5;
Chris@0:     }
Chris@0: 
Chris@0:     QRect oldClipRect = rect;
Chris@0:     QRect newClipRect(oldClipRect.x() - 25, oldClipRect.y(),
Chris@0: 		      oldClipRect.width() + 50, oldClipRect.height());
Chris@0:     paint.setClipRect(newClipRect);
Chris@0: 
Chris@0:     QColor greyColour(m_colour);
Chris@0:     if (m_colour == Qt::black) {
Chris@0: 	greyColour = QColor(200,200,200);
Chris@0:     } else {
Chris@0: 	greyColour = m_colour.light(150);
Chris@0:     }
Chris@0: 
Chris@0:     while (1) {
Chris@0: 
Chris@0: 	rt = RealTime(ms / 1000, (ms % 1000) * 1000000);
Chris@0: 	ms += incms;
Chris@0: 
Chris@0: 	long frame = RealTime::realTime2Frame(rt, sampleRate);
Chris@0: 	if (frame >= rectEnd) break;
Chris@0: 
Chris@0: 	int x = (frame - startFrame) / zoomLevel;
Chris@0: 	if (x < rect.x() || x >= rect.x() + rect.width()) continue;
Chris@0: 
Chris@0: 	paint.setPen(greyColour);
Chris@0: 	paint.drawLine(x, 0, x, m_view->height());
Chris@0: 
Chris@0: 	paint.setPen(m_colour);
Chris@0: 	paint.drawLine(x, 0, x, 5);
Chris@0: 	paint.drawLine(x, m_view->height() - 6, x, m_view->height() - 1);
Chris@0: 
Chris@0: 	QString text(QString::fromStdString(rt.toText()));
Chris@0: 
Chris@0: 	int y;
Chris@0: 	QFontMetrics metrics = paint.fontMetrics();
Chris@0: 	switch (m_labelHeight) {
Chris@0: 	default:
Chris@0: 	case LabelTop:
Chris@0: 	    y = 6 + metrics.ascent();
Chris@0: 	    break;
Chris@0: 	case LabelMiddle:
Chris@0: 	    y = m_view->height() / 2 - metrics.height() / 2 + metrics.ascent();
Chris@0: 	    break;
Chris@0: 	case LabelBottom:
Chris@0: 	    y = m_view->height() - metrics.height() + metrics.ascent() - 6;
Chris@0: 	}
Chris@0: 
Chris@0: 	int tw = metrics.width(text);
Chris@0: 
Chris@0: 	paint.setPen(m_view->palette().background().color());
Chris@0: 
Chris@0: 	//!!! simple drawing function for this please
Chris@0: 	//!!! and need getContrastingColour() in widget, or use the
Chris@0: 	//palette properly -- get the base class able to draw text
Chris@0: 	//using the proper colour (or this technique) automatically
Chris@0: 	for (int dx = -1; dx <= 1; ++dx) {
Chris@0: 	    for (int dy = -1; dy <= 1; ++dy) {
Chris@0: 		if ((dx && dy) || !(dx || dy)) continue;
Chris@0: 		paint.drawText(x + 2 - tw / 2 + dx, y + dy, text);
Chris@0: 	    }
Chris@0: 	}
Chris@0: 	
Chris@0: 	paint.setPen(m_colour);
Chris@0: 	paint.drawText(x + 2 - tw / 2, y, text);
Chris@0: 		
Chris@0: 	paint.setPen(greyColour);
Chris@0: 
Chris@0: 	for (int i = 1; i < ticks; ++i) {
Chris@0: 	    rt = rt + (incRt / ticks);
Chris@0: 	    frame = RealTime::realTime2Frame(rt, sampleRate);
Chris@0: 	    x = (frame - startFrame) / zoomLevel;
Chris@0: 	    int sz = 5;
Chris@0: 	    if (ticks == 10) {
Chris@0: 		if ((i % 2) == 1) {
Chris@0: 		    if (i == 5) {
Chris@0: 			paint.drawLine(x, 0, x, m_view->height());
Chris@0: 		    } else sz = 3;
Chris@0: 		} else {
Chris@0: 		    sz = 7;
Chris@0: 		}
Chris@0: 	    }
Chris@0: 	    paint.drawLine(x, 0, x, sz);
Chris@0: 	    paint.drawLine(x, m_view->height() - sz - 1, x, m_view->height() - 1);
Chris@0: 	}
Chris@0:     }
Chris@0: 
Chris@0:     paint.restore();
Chris@0: }
Chris@0:     
Chris@0: 
Chris@0: #ifdef INCLUDE_MOCFILES
Chris@0: #include "TimeRulerLayer.moc.cpp"
Chris@0: #endif
Chris@0: