comparison layer/TimeRulerLayer.cpp @ 0:fc9323a41f5a

start base : Sonic Visualiser sv1-1.0rc1

+/* -*- c-basic-offset: 4 indent-tabs-mode: nil -*-  vi:set ts=8 sts=4 sw=4: */
+
+/*
+    Sonic Visualiser
+    An audio file viewer and annotation editor.
+    Centre for Digital Music, Queen Mary, University of London.
+    This file copyright 2006 Chris Cannam.
+   
+    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 "TimeRulerLayer.h"
+
+#include "data/model/Model.h"
+#include "base/RealTime.h"
+#include "view/View.h"
+
+#include <QPainter>
+
+#include <iostream>
+
+using std::cerr;
+using std::endl;
+
+TimeRulerLayer::TimeRulerLayer() :
+    Layer(),
+    m_model(0),
+    m_colour(Qt::black),
+    m_labelHeight(LabelTop)
+{
+    
+}
+
+void
+TimeRulerLayer::setModel(Model *model)
+{
+    if (m_model == model) return;
+    m_model = model;
+    emit modelReplaced();
+}
+
+void
+TimeRulerLayer::setBaseColour(QColor colour)
+{
+    if (m_colour == colour) return;
+    m_colour = colour;
+    emit layerParametersChanged();
+}
+
+Layer::PropertyList
+TimeRulerLayer::getProperties() const
+{
+    PropertyList list;
+    list.push_back("Colour");
+    return list;
+}
+
+QString
+TimeRulerLayer::getPropertyLabel(const PropertyName &name) const
+{
+    if (name == "Colour") return tr("Colour");
+    return "";
+}
+
+Layer::PropertyType
+TimeRulerLayer::getPropertyType(const PropertyName &) const
+{
+    return ValueProperty;
+}
+
+int
+TimeRulerLayer::getPropertyRangeAndValue(const PropertyName &name,
+					 int *min, int *max, int *deflt) const
+{
+    int val = 0;
+
+    if (name == "Colour") {
+
+	if (min) *min = 0;
+	if (max) *max = 5;
+        if (deflt) *deflt = 0;
+
+	if (m_colour == Qt::black) val = 0;
+	else if (m_colour == Qt::darkRed) val = 1;
+	else if (m_colour == Qt::darkBlue) val = 2;
+	else if (m_colour == Qt::darkGreen) val = 3;
+	else if (m_colour == QColor(200, 50, 255)) val = 4;
+	else if (m_colour == QColor(255, 150, 50)) val = 5;
+
+    } else {
+	
+	val = Layer::getPropertyRangeAndValue(name, min, max, deflt);
+    }
+
+    return val;
+}
+
+QString
+TimeRulerLayer::getPropertyValueLabel(const PropertyName &name,
+				    int value) const
+{
+    if (name == "Colour") {
+	switch (value) {
+	default:
+	case 0: return tr("Black");
+	case 1: return tr("Red");
+	case 2: return tr("Blue");
+	case 3: return tr("Green");
+	case 4: return tr("Purple");
+	case 5: return tr("Orange");
+	}
+    }
+    return tr("<unknown>");
+}
+
+void
+TimeRulerLayer::setProperty(const PropertyName &name, int value)
+{
+    if (name == "Colour") {
+	switch (value) {
+	default:
+	case 0:	setBaseColour(Qt::black); break;
+	case 1: setBaseColour(Qt::darkRed); break;
+	case 2: setBaseColour(Qt::darkBlue); break;
+	case 3: setBaseColour(Qt::darkGreen); break;
+	case 4: setBaseColour(QColor(200, 50, 255)); break;
+	case 5: setBaseColour(QColor(255, 150, 50)); break;
+	}
+    }
+}
+
+void
+TimeRulerLayer::paint(View *v, QPainter &paint, QRect rect) const
+{
+//    std::cerr << "TimeRulerLayer::paint (" << rect.x() << "," << rect.y()
+//	      << ") [" << rect.width() << "x" << rect.height() << "]" << std::endl;
+    
+    if (!m_model || !m_model->isOK()) return;
+
+    int sampleRate = m_model->getSampleRate();
+    if (!sampleRate) return;
+
+    long startFrame = v->getStartFrame();
+    long endFrame = v->getEndFrame();
+
+    int zoomLevel = v->getZoomLevel();
+
+    long rectStart = startFrame + (rect.x() - 100) * zoomLevel;
+    long rectEnd = startFrame + (rect.x() + rect.width() + 100) * zoomLevel;
+//    if (rectStart < startFrame) rectStart = startFrame;
+//    if (rectEnd > endFrame) rectEnd = endFrame;
+
+//    std::cerr << "TimeRulerLayer::paint: calling paint.save()" << std::endl;
+    paint.save();
+//!!!    paint.setClipRect(v->rect());
+
+    int minPixelSpacing = 50;
+
+    RealTime rtStart = RealTime::frame2RealTime(startFrame, sampleRate);
+    RealTime rtEnd = RealTime::frame2RealTime(endFrame, sampleRate);
+//    cerr << "startFrame " << startFrame << ", endFrame " << v->getEndFrame() << ", rtStart " << rtStart << ", rtEnd " << rtEnd << endl;
+    int count = v->width() / minPixelSpacing;
+    if (count < 1) count = 1;
+    RealTime rtGap = (rtEnd - rtStart) / count;
+//    cerr << "rtGap is " << rtGap << endl;
+
+    int incms;
+    bool quarter = false;
+
+    if (rtGap.sec > 0) {
+	incms = 1000;
+	int s = rtGap.sec;
+	if (s > 0) { incms *= 5; s /= 5; }
+	if (s > 0) { incms *= 2; s /= 2; }
+	if (s > 0) { incms *= 6; s /= 6; quarter = true; }
+	if (s > 0) { incms *= 5; s /= 5; quarter = false; }
+	if (s > 0) { incms *= 2; s /= 2; }
+	if (s > 0) { incms *= 6; s /= 6; quarter = true; }
+	while (s > 0) {
+	    incms *= 10;
+	    s /= 10;
+	    quarter = false;
+	}
+    } else {
+	incms = 1;
+	int ms = rtGap.msec();
+	if (ms > 0) { incms *= 10; ms /= 10; }
+	if (ms > 0) { incms *= 10; ms /= 10; }
+	if (ms > 0) { incms *= 5; ms /= 5; }
+	if (ms > 0) { incms *= 2; ms /= 2; }
+    }
+//    cerr << "incms is " << incms << endl;
+
+    RealTime rt = RealTime::frame2RealTime(rectStart, sampleRate);
+    long ms = rt.sec * 1000 + rt.msec();
+    ms = (ms / incms) * incms - incms;
+
+    RealTime incRt = RealTime::fromMilliseconds(incms);
+    long incFrame = RealTime::realTime2Frame(incRt, sampleRate);
+    int incX = incFrame / zoomLevel;
+    int ticks = 10;
+    if (incX < minPixelSpacing * 2) {
+	ticks = quarter ? 4 : 5;
+    }
+
+    QRect oldClipRect = rect;
+    QRect newClipRect(oldClipRect.x() - 25, oldClipRect.y(),
+		      oldClipRect.width() + 50, oldClipRect.height());
+    paint.setClipRect(newClipRect);
+    paint.setClipRect(rect);
+
+    QColor greyColour(m_colour);
+    if (m_colour == Qt::black) {
+	greyColour = QColor(200,200,200);
+    } else {
+	greyColour = m_colour.light(150);
+    }
+
+    while (1) {
+
+	rt = RealTime::fromMilliseconds(ms);
+	ms += incms;
+
+	long frame = RealTime::realTime2Frame(rt, sampleRate);
+	if (frame >= rectEnd) break;
+
+	int x = (frame - startFrame) / zoomLevel;
+	if (x < rect.x() || x >= rect.x() + rect.width()) continue;
+
+	paint.setPen(greyColour);
+	paint.drawLine(x, 0, x, v->height());
+
+	paint.setPen(m_colour);
+	paint.drawLine(x, 0, x, 5);
+	paint.drawLine(x, v->height() - 6, x, v->height() - 1);
+
+	QString text(QString::fromStdString(rt.toText()));
+
+	int y;
+	QFontMetrics metrics = paint.fontMetrics();
+	switch (m_labelHeight) {
+	default:
+	case LabelTop:
+	    y = 6 + metrics.ascent();
+	    break;
+	case LabelMiddle:
+	    y = v->height() / 2 - metrics.height() / 2 + metrics.ascent();
+	    break;
+	case LabelBottom:
+	    y = v->height() - metrics.height() + metrics.ascent() - 6;
+	}
+
+	int tw = metrics.width(text);
+
+        if (v->getViewManager() && v->getViewManager()->getOverlayMode() !=
+            ViewManager::NoOverlays) {
+
+            if (v->getLayer(0) == this) {
+                // backmost layer, don't worry about outlining the text
+                paint.drawText(x+2 - tw/2, y, text);
+            } else {
+                v->drawVisibleText(paint, x+2 - tw/2, y, text, View::OutlinedText);
+            }
+        }
+
+	paint.setPen(greyColour);
+
+	for (int i = 1; i < ticks; ++i) {
+	    rt = rt + (incRt / ticks);
+	    frame = RealTime::realTime2Frame(rt, sampleRate);
+	    x = (frame - startFrame) / zoomLevel;
+	    int sz = 5;
+	    if (ticks == 10) {
+		if ((i % 2) == 1) {
+		    if (i == 5) {
+			paint.drawLine(x, 0, x, v->height());
+		    } else sz = 3;
+		} else {
+		    sz = 7;
+		}
+	    }
+	    paint.drawLine(x, 0, x, sz);
+	    paint.drawLine(x, v->height() - sz - 1, x, v->height() - 1);
+	}
+    }
+
+    paint.restore();
+}
+    
+QString
+TimeRulerLayer::toXmlString(QString indent, QString extraAttributes) const
+{
+    return Layer::toXmlString(indent, extraAttributes +
+			      QString(" colour=\"%1\"").arg(encodeColour(m_colour)));
+}
+
+void
+TimeRulerLayer::setProperties(const QXmlAttributes &attributes)
+{
+    QString colourSpec = attributes.value("colour");
+    if (colourSpec != "") {
+	QColor colour(colourSpec);
+	if (colour.isValid()) {
+	    setBaseColour(QColor(colourSpec));
+	}
+    }
+}
+