Chris@127: /* -*- c-basic-offset: 4 indent-tabs-mode: nil -*-  vi:set ts=8 sts=4 sw=4: */
Chris@127: 
Chris@127: /*
Chris@127:     Sonic Visualiser
Chris@127:     An audio file viewer and annotation editor.
Chris@127:     Centre for Digital Music, Queen Mary, University of London.
Chris@182:     This file copyright 2006 Chris Cannam and QMUL.
Chris@127:     
Chris@127:     This program is free software; you can redistribute it and/or
Chris@127:     modify it under the terms of the GNU General Public License as
Chris@127:     published by the Free Software Foundation; either version 2 of the
Chris@127:     License, or (at your option) any later version.  See the file
Chris@127:     COPYING included with this distribution for more information.
Chris@127: */
Chris@127: 
Chris@128: #include "Pane.h"
Chris@128: #include "layer/Layer.h"
Chris@128: #include "data/model/Model.h"
Chris@127: #include "base/ZoomConstraint.h"
Chris@127: #include "base/RealTime.h"
Chris@127: #include "base/Profiler.h"
Chris@128: #include "ViewManager.h"
Chris@127: #include "base/CommandHistory.h"
Chris@127: #include "layer/WaveformLayer.h"
Chris@127: 
Chris@127: #include <QPaintEvent>
Chris@127: #include <QPainter>
Chris@127: #include <iostream>
Chris@127: #include <cmath>
Chris@127: 
Chris@133: //!!! for HUD -- pull out into a separate class
Chris@133: #include <QFrame>
Chris@133: #include <QGridLayout>
Chris@133: #include <QPushButton>
Chris@133: #include "widgets/Thumbwheel.h"
Chris@172: #include "widgets/Panner.h"
Chris@188: #include "widgets/RangeInputDialog.h"
Chris@189: #include "widgets/NotifyingPushButton.h"
Chris@133: 
Chris@127: using std::cerr;
Chris@127: using std::endl;
Chris@127: 
Chris@127: Pane::Pane(QWidget *w) :
Chris@127:     View(w, true),
Chris@127:     m_identifyFeatures(false),
Chris@127:     m_clickedInRange(false),
Chris@127:     m_shiftPressed(false),
Chris@127:     m_ctrlPressed(false),
Chris@127:     m_navigating(false),
Chris@127:     m_resizing(false),
Chris@133:     m_centreLineVisible(true),
Chris@133:     m_headsUpDisplay(0)
Chris@127: {
Chris@127:     setObjectName("Pane");
Chris@127:     setMouseTracking(true);
Chris@133:     
Chris@133:     updateHeadsUpDisplay();
Chris@133: }
Chris@133: 
Chris@133: void
Chris@133: Pane::updateHeadsUpDisplay()
Chris@133: {
Chris@187:     Profiler profiler("Pane::updateHeadsUpDisplay", true);
Chris@187: 
Chris@192:     if (!isVisible()) return;
Chris@192: 
Chris@132: /*
Chris@132:     int count = 0;
Chris@132:     int currentLevel = 1;
Chris@132:     int level = 1;
Chris@132:     while (true) {
Chris@132:         if (getZoomLevel() == level) currentLevel = count;
Chris@132:         int newLevel = getZoomConstraintBlockSize(level + 1,
Chris@132:                                                   ZoomConstraint::RoundUp);
Chris@132:         if (newLevel == level) break;
Chris@132:         if (newLevel == 131072) break; //!!! just because
Chris@132:         level = newLevel;
Chris@132:         ++count;
Chris@132:     }
Chris@132: 
Chris@132:     std::cerr << "Have " << count+1 << " zoom levels" << std::endl;
Chris@132: */
Chris@133: 
Chris@188:     Layer *layer = 0;
Chris@188:     if (getLayerCount() > 0) layer = getLayer(getLayerCount() - 1);
Chris@188: 
Chris@133:     if (!m_headsUpDisplay) {
Chris@133: 
Chris@133:         m_headsUpDisplay = new QFrame(this);
Chris@133: 
Chris@133:         QGridLayout *layout = new QGridLayout;
Chris@133:         layout->setMargin(0);
Chris@133:         layout->setSpacing(0);
Chris@133:         m_headsUpDisplay->setLayout(layout);
Chris@133:         
Chris@133:         m_hthumb = new Thumbwheel(Qt::Horizontal);
Chris@187:         m_hthumb->setObjectName(tr("Horizontal Zoom"));
Chris@173:         layout->addWidget(m_hthumb, 1, 0, 1, 2);
Chris@133:         m_hthumb->setFixedWidth(70);
Chris@133:         m_hthumb->setFixedHeight(16);
Chris@133:         m_hthumb->setDefaultValue(0);
Chris@165:         m_hthumb->setSpeed(0.6);
Chris@133:         connect(m_hthumb, SIGNAL(valueChanged(int)), this, 
Chris@133:                 SLOT(horizontalThumbwheelMoved(int)));
Chris@189:         connect(m_hthumb, SIGNAL(mouseEntered()), this, SLOT(mouseEnteredWidget()));
Chris@189:         connect(m_hthumb, SIGNAL(mouseLeft()), this, SLOT(mouseLeftWidget()));
Chris@172: 
Chris@172:         m_vpan = new Panner;
Chris@172:         layout->addWidget(m_vpan, 0, 1);
Chris@173:         m_vpan->setFixedWidth(12);
Chris@172:         m_vpan->setFixedHeight(70);
Chris@174:         m_vpan->setAlpha(80, 130);
Chris@174:         connect(m_vpan, SIGNAL(rectExtentsChanged(float, float, float, float)),
Chris@174:                 this, SLOT(verticalPannerMoved(float, float, float, float)));
Chris@188:         connect(m_vpan, SIGNAL(doubleClicked()),
Chris@188:                 this, SLOT(editVerticalPannerExtents()));
Chris@189:         connect(m_vpan, SIGNAL(mouseEntered()), this, SLOT(mouseEnteredWidget()));
Chris@189:         connect(m_vpan, SIGNAL(mouseLeft()), this, SLOT(mouseLeftWidget()));
Chris@172: 
Chris@133:         m_vthumb = new Thumbwheel(Qt::Vertical);
Chris@187:         m_vthumb->setObjectName(tr("Vertical Zoom"));
Chris@172:         layout->addWidget(m_vthumb, 0, 2);
Chris@133:         m_vthumb->setFixedWidth(16);
Chris@133:         m_vthumb->setFixedHeight(70);
Chris@133:         connect(m_vthumb, SIGNAL(valueChanged(int)), this, 
Chris@133:                 SLOT(verticalThumbwheelMoved(int)));
Chris@189:         connect(m_vthumb, SIGNAL(mouseEntered()), this, SLOT(mouseEnteredWidget()));
Chris@189:         connect(m_vthumb, SIGNAL(mouseLeft()), this, SLOT(mouseLeftWidget()));
Chris@133: 
Chris@188:         if (layer) {
Chris@188:             RangeMapper *rm = layer->getNewVerticalZoomRangeMapper();
Chris@188:             if (rm) m_vthumb->setRangeMapper(rm);
Chris@188:         }
Chris@188: 
Chris@189:         m_reset = new NotifyingPushButton;
Chris@189:         m_reset->setFixedHeight(16);
Chris@189:         m_reset->setFixedWidth(16);
Chris@189:         layout->addWidget(m_reset, 1, 2);
Chris@189:         connect(m_reset, SIGNAL(clicked()), m_hthumb, SLOT(resetToDefault()));
Chris@189:         connect(m_reset, SIGNAL(clicked()), m_vthumb, SLOT(resetToDefault()));
Chris@189:         connect(m_reset, SIGNAL(clicked()), m_vpan, SLOT(resetToDefault()));
Chris@189:         connect(m_reset, SIGNAL(mouseEntered()), this, SLOT(mouseEnteredWidget()));
Chris@189:         connect(m_reset, SIGNAL(mouseLeft()), this, SLOT(mouseLeftWidget()));
Chris@133:     }
Chris@133: 
Chris@133:     int count = 0;
Chris@133:     int current = 0;
Chris@133:     int level = 1;
Chris@133: 
Chris@137:     //!!! pull out into function (presumably in View)
Chris@137:     bool haveConstraint = false;
Chris@137:     for (LayerList::const_iterator i = m_layers.begin(); i != m_layers.end();
Chris@137:          ++i) {
Chris@137:         if ((*i)->getZoomConstraint() && !(*i)->supportsOtherZoomLevels()) {
Chris@137:             haveConstraint = true;
Chris@137:             break;
Chris@137:         }
Chris@137:     }
Chris@137: 
Chris@137:     if (haveConstraint) {
Chris@137:         while (true) {
Chris@137:             if (getZoomLevel() == level) current = count;
Chris@137:             int newLevel = getZoomConstraintBlockSize(level + 1,
Chris@137:                                                       ZoomConstraint::RoundUp);
Chris@137:             if (newLevel == level) break;
Chris@137:             level = newLevel;
Chris@137:             if (++count == 50) break;
Chris@137:         }
Chris@137:     } else {
Chris@137:         // if we have no particular constraints, we can really spread out
Chris@137:         while (true) {
Chris@137:             if (getZoomLevel() >= level) current = count;
Chris@137:             int step = level / 10;
Chris@137:             int pwr = 0;
Chris@137:             while (step > 0) {
Chris@137:                 ++pwr;
Chris@137:                 step /= 2;
Chris@137:             }
Chris@137:             step = 1;
Chris@137:             while (pwr > 0) {
Chris@137:                 step *= 2;
Chris@137:                 --pwr;
Chris@137:             }
Chris@154: //            std::cerr << level << std::endl;
Chris@137:             level += step;
Chris@137:             if (++count == 100 || level > 262144) break;
Chris@137:         }
Chris@133:     }
Chris@133: 
Chris@133: //    std::cerr << "Have " << count << " zoom levels" << std::endl;
Chris@133: 
Chris@133:     m_hthumb->setMinimumValue(0);
Chris@133:     m_hthumb->setMaximumValue(count);
Chris@133:     m_hthumb->setValue(count - current);
Chris@133: 
Chris@133: //    std::cerr << "set value to " << count-current << std::endl;
Chris@133: 
Chris@133: //    std::cerr << "default value is " << m_hthumb->getDefaultValue() << std::endl;
Chris@133: 
Chris@133:     if (count != 50 && m_hthumb->getDefaultValue() == 0) {
Chris@133:         m_hthumb->setDefaultValue(count - current);
Chris@133: //        std::cerr << "set default value to " << m_hthumb->getDefaultValue() << std::endl;
Chris@133:     }
Chris@133: 
Chris@133:     if (layer) {
Chris@133:         int defaultStep = 0;
Chris@133:         int max = layer->getVerticalZoomSteps(defaultStep);
Chris@133:         if (max == 0) {
Chris@133:             m_vthumb->hide();
Chris@133:         } else {
Chris@133:             m_vthumb->show();
Chris@187:             m_vthumb->blockSignals(true);
Chris@133:             m_vthumb->setMinimumValue(0);
Chris@133:             m_vthumb->setMaximumValue(max);
Chris@133:             m_vthumb->setDefaultValue(defaultStep);
Chris@133:             m_vthumb->setValue(layer->getCurrentVerticalZoomStep());
Chris@187:             m_vthumb->blockSignals(false);
Chris@135: 
Chris@135:             std::cerr << "Vertical thumbwheel: min 0, max " << max
Chris@135:                       << ", default " << defaultStep << ", value "
Chris@135:                       << m_vthumb->getValue() << std::endl;
Chris@135: 
Chris@133:         }
Chris@133:     }
Chris@133: 
Chris@174:     updateVerticalPanner();
Chris@174: 
Chris@133:     if (m_manager && m_manager->getZoomWheelsEnabled() &&
Chris@133:         width() > 120 && height() > 100) {
Chris@165:         if (!m_headsUpDisplay->isVisible()) {
Chris@165:             m_headsUpDisplay->show();
Chris@165:             connect(m_manager, SIGNAL(zoomLevelChanged()),
Chris@165:                     this, SLOT(zoomLevelChanged()));
Chris@165:         }
Chris@133:         if (m_vthumb->isVisible()) {
Chris@133:             m_headsUpDisplay->move(width() - 86, height() - 86);
Chris@133:         } else {
Chris@133:             m_headsUpDisplay->move(width() - 86, height() - 51);
Chris@133:         }
Chris@133:     } else {
Chris@133:         m_headsUpDisplay->hide();
Chris@133:         if (m_manager) {
Chris@133:             disconnect(m_manager, SIGNAL(zoomLevelChanged()),
Chris@133:                        this, SLOT(zoomLevelChanged()));
Chris@133:         }
Chris@133:     }
Chris@127: }
Chris@127: 
Chris@174: void
Chris@174: Pane::updateVerticalPanner()
Chris@174: {
Chris@174:     if (!m_vpan || !m_manager || !m_manager->getZoomWheelsEnabled()) return;
Chris@174: 
Chris@174:     float vmin, vmax, dmin, dmax;
Chris@174:     if (getTopLayerDisplayExtents(vmin, vmax, dmin, dmax) && vmax != vmin) {
Chris@174:         float y0 = (dmin - vmin) / (vmax - vmin);
Chris@174:         float y1 = (dmax - vmin) / (vmax - vmin);
Chris@174:         m_vpan->blockSignals(true);
Chris@174:         m_vpan->setRectExtents(0, 1.0 - y1, 1, y1 - y0);
Chris@174:         m_vpan->blockSignals(false);
Chris@174:         m_vpan->show();
Chris@174:     } else {
Chris@174:         m_vpan->hide();
Chris@174:     }
Chris@174: }
Chris@174: 
Chris@127: bool
Chris@127: Pane::shouldIlluminateLocalFeatures(const Layer *layer, QPoint &pos) const
Chris@127: {
Chris@127:     QPoint discard;
Chris@127:     bool b0, b1;
Chris@127: 
Chris@127:     if (layer == getSelectedLayer() &&
Chris@127: 	!shouldIlluminateLocalSelection(discard, b0, b1)) {
Chris@127: 
Chris@127: 	pos = m_identifyPoint;
Chris@127: 	return m_identifyFeatures;
Chris@127:     }
Chris@127: 
Chris@127:     return false;
Chris@127: }
Chris@127: 
Chris@127: bool
Chris@127: Pane::shouldIlluminateLocalSelection(QPoint &pos,
Chris@127: 				     bool &closeToLeft,
Chris@127: 				     bool &closeToRight) const
Chris@127: {
Chris@127:     if (m_identifyFeatures &&
Chris@127: 	m_manager &&
Chris@127: 	m_manager->getToolMode() == ViewManager::EditMode &&
Chris@127: 	!m_manager->getSelections().empty() &&
Chris@127: 	!selectionIsBeingEdited()) {
Chris@127: 
Chris@127: 	Selection s(getSelectionAt(m_identifyPoint.x(),
Chris@127: 				   closeToLeft, closeToRight));
Chris@127: 
Chris@127: 	if (!s.isEmpty()) {
Chris@127: 	    if (getSelectedLayer() && getSelectedLayer()->isLayerEditable()) {
Chris@127: 		
Chris@127: 		pos = m_identifyPoint;
Chris@127: 		return true;
Chris@127: 	    }
Chris@127: 	}
Chris@127:     }
Chris@127: 
Chris@127:     return false;
Chris@127: }
Chris@127: 
Chris@127: bool
Chris@127: Pane::selectionIsBeingEdited() const
Chris@127: {
Chris@127:     if (!m_editingSelection.isEmpty()) {
Chris@127: 	if (m_mousePos != m_clickPos &&
Chris@127: 	    getFrameForX(m_mousePos.x()) != getFrameForX(m_clickPos.x())) {
Chris@127: 	    return true;
Chris@127: 	}
Chris@127:     }
Chris@127:     return false;
Chris@127: }
Chris@127: 
Chris@127: void
Chris@127: Pane::setCentreLineVisible(bool visible)
Chris@127: {
Chris@127:     m_centreLineVisible = visible;
Chris@127:     update();
Chris@127: }
Chris@127: 
Chris@127: void
Chris@127: Pane::paintEvent(QPaintEvent *e)
Chris@127: {
Chris@127: //    Profiler profiler("Pane::paintEvent", true);
Chris@127: 
Chris@127:     QPainter paint;
Chris@127: 
Chris@127:     QRect r(rect());
Chris@127: 
Chris@127:     if (e) {
Chris@127: 	r = e->rect();
Chris@127:     }
Chris@127: /*
Chris@127:     paint.begin(this);
Chris@127:     paint.setClipRect(r);
Chris@127: 
Chris@127:     if (hasLightBackground()) {
Chris@127: 	paint.setPen(Qt::white);
Chris@127: 	paint.setBrush(Qt::white);
Chris@127:     } else {
Chris@127: 	paint.setPen(Qt::black);
Chris@127: 	paint.setBrush(Qt::black);
Chris@127:     }
Chris@127:     paint.drawRect(r);
Chris@127: 
Chris@127:     paint.end();
Chris@127: */
Chris@127:     View::paintEvent(e);
Chris@127: 
Chris@127:     paint.begin(this);
Chris@127: 
Chris@127:     if (e) {
Chris@127: 	paint.setClipRect(r);
Chris@127:     }
Chris@127: 
Chris@127:     const Model *waveformModel = 0; // just for reporting purposes
Chris@127:     int verticalScaleWidth = 0;
Chris@127:     
Chris@127:     int fontHeight = paint.fontMetrics().height();
Chris@127:     int fontAscent = paint.fontMetrics().ascent();
Chris@127: 
Chris@127:     if (m_manager &&
Chris@127:         !m_manager->isPlaying() &&
Chris@127:         m_manager->getToolMode() == ViewManager::SelectMode) {
Chris@127: 
Chris@127:         for (LayerList::iterator vi = m_layers.end(); vi != m_layers.begin(); ) {
Chris@127:             --vi;
Chris@127: 
Chris@127:             std::vector<QRect> crosshairExtents;
Chris@127: 
Chris@127:             if ((*vi)->getCrosshairExtents(this, paint, m_identifyPoint,
Chris@127:                                            crosshairExtents)) {
Chris@127:                 (*vi)->paintCrosshairs(this, paint, m_identifyPoint);
Chris@127:                 break;
Chris@127:             } else if ((*vi)->isLayerOpaque()) {
Chris@127:                 break;
Chris@127:             }
Chris@127:         }
Chris@127:     }
Chris@127: 
Chris@127:     for (LayerList::iterator vi = m_layers.end(); vi != m_layers.begin(); ) {
Chris@127:         --vi;
Chris@127:             
Chris@127:         if (dynamic_cast<WaveformLayer *>(*vi)) {
Chris@127:             waveformModel = (*vi)->getModel();
Chris@127:         }
Chris@127: 
Chris@189:         if (!m_manager || !m_manager->shouldShowVerticalScale()) {
Chris@127:             break;
Chris@127:         }
Chris@127: 
Chris@127:         verticalScaleWidth = (*vi)->getVerticalScaleWidth(this, paint);
Chris@127: 
Chris@127:         if (verticalScaleWidth > 0 && r.left() < verticalScaleWidth) {
Chris@127: 
Chris@127: //	    Profiler profiler("Pane::paintEvent - painting vertical scale", true);
Chris@127: 
Chris@127: //	    std::cerr << "Pane::paintEvent: calling paint.save() in vertical scale block" << std::endl;
Chris@127:             paint.save();
Chris@127:             
Chris@127:             paint.setPen(Qt::black);
Chris@127:             paint.setBrush(Qt::white);
Chris@127:             paint.drawRect(0, -1, verticalScaleWidth, height()+1);
Chris@127:             
Chris@127:             paint.setBrush(Qt::NoBrush);
Chris@127:             (*vi)->paintVerticalScale
Chris@127:                 (this, paint, QRect(0, 0, verticalScaleWidth, height()));
Chris@127:             
Chris@127:             paint.restore();
Chris@127:         }
Chris@127: 	
Chris@127:         if (m_identifyFeatures) {
Chris@127:             
Chris@127:             QPoint pos = m_identifyPoint;
Chris@127:             QString desc = (*vi)->getFeatureDescription(this, pos);
Chris@127: 	    
Chris@127:             if (desc != "") {
Chris@127:                 
Chris@127:                 paint.save();
Chris@127:                 
Chris@127:                 int tabStop =
Chris@127:                     paint.fontMetrics().width(tr("Some lengthy prefix:"));
Chris@127:                 
Chris@127:                 QRect boundingRect = 
Chris@127:                     paint.fontMetrics().boundingRect
Chris@127:                     (rect(),
Chris@127:                      Qt::AlignRight | Qt::AlignTop | Qt::TextExpandTabs,
Chris@127:                      desc, tabStop);
Chris@127: 
Chris@127:                 if (hasLightBackground()) {
Chris@127:                     paint.setPen(Qt::NoPen);
Chris@127:                     paint.setBrush(QColor(250, 250, 250, 200));
Chris@127:                 } else {
Chris@127:                     paint.setPen(Qt::NoPen);
Chris@127:                     paint.setBrush(QColor(50, 50, 50, 200));
Chris@127:                 }
Chris@127: 
Chris@127:                 int extra = paint.fontMetrics().descent();
Chris@127:                 paint.drawRect(width() - boundingRect.width() - 10 - extra,
Chris@127:                                10 - extra,
Chris@127:                                boundingRect.width() + 2 * extra,
Chris@127:                                boundingRect.height() + extra);
Chris@127: 
Chris@127:                 if (hasLightBackground()) {
Chris@127:                     paint.setPen(QColor(150, 20, 0));
Chris@127:                 } else {
Chris@127:                     paint.setPen(QColor(255, 150, 100));
Chris@127:                 }
Chris@127: 		
Chris@127:                 QTextOption option;
Chris@127:                 option.setWrapMode(QTextOption::NoWrap);
Chris@127:                 option.setAlignment(Qt::AlignRight | Qt::AlignTop);
Chris@127:                 option.setTabStop(tabStop);
Chris@127:                 paint.drawText(QRectF(width() - boundingRect.width() - 10, 10,
Chris@127:                                       boundingRect.width(),
Chris@127:                                       boundingRect.height()),
Chris@127:                                desc,
Chris@127:                                option);
Chris@127: 
Chris@127:                 paint.restore();
Chris@127:             }
Chris@127:         }
Chris@127: 
Chris@127:         break;
Chris@127:     }
Chris@127:     
Chris@127:     int sampleRate = getModelsSampleRate();
Chris@127:     paint.setBrush(Qt::NoBrush);
Chris@127: 
Chris@189:     if (m_centreLineVisible &&
Chris@189:         m_manager &&
Chris@189:         m_manager->shouldShowCentreLine()) {
Chris@127: 
Chris@189:         QColor c = QColor(0, 0, 0);
Chris@189:         if (!hasLightBackground()) {
Chris@189:             c = QColor(240, 240, 240);
Chris@189:         }
Chris@189:         paint.setPen(c);
Chris@189:         int x = width() / 2 + 1;
Chris@189: 	paint.drawLine(x, 0, x, height() - 1);
Chris@189:         paint.drawLine(x-1, 1, x+1, 1);
Chris@189:         paint.drawLine(x-2, 0, x+2, 0);
Chris@189:         paint.drawLine(x-1, height() - 2, x+1, height() - 2);
Chris@189:         paint.drawLine(x-2, height() - 1, x+2, height() - 1);
Chris@127: 
Chris@127: 	paint.setPen(QColor(50, 50, 50));
Chris@127: 
Chris@127: 	int y = height() - fontHeight
Chris@127: 	    + fontAscent - 6;
Chris@127: 	
Chris@127: 	LayerList::iterator vi = m_layers.end();
Chris@127: 	
Chris@127: 	if (vi != m_layers.begin()) {
Chris@127: 	    
Chris@127: 	    switch ((*--vi)->getPreferredFrameCountPosition()) {
Chris@127: 		
Chris@127: 	    case Layer::PositionTop:
Chris@127: 		y = fontAscent + 6;
Chris@127: 		break;
Chris@127: 		
Chris@127: 	    case Layer::PositionMiddle:
Chris@127: 		y = (height() - fontHeight) / 2
Chris@127: 		    + fontAscent;
Chris@127: 		break;
Chris@127: 
Chris@127: 	    case Layer::PositionBottom:
Chris@127: 		// y already set correctly
Chris@127: 		break;
Chris@127: 	    }
Chris@127: 	}
Chris@127: 
Chris@189:         if (m_manager && m_manager->shouldShowFrameCount()) {
Chris@127: 
Chris@127:             if (sampleRate) {
Chris@127: 
Chris@127:                 QString text(QString::fromStdString
Chris@127:                              (RealTime::frame2RealTime
Chris@127:                               (m_centreFrame, sampleRate).toText(true)));
Chris@127:                 
Chris@127:                 int tw = paint.fontMetrics().width(text);
Chris@127:                 int x = width()/2 - 4 - tw;
Chris@127:                 
Chris@127:                 drawVisibleText(paint, x, y, text, OutlinedText);
Chris@127:             }
Chris@127:             
Chris@127:             QString text = QString("%1").arg(m_centreFrame);
Chris@127:             
Chris@127:             int tw = paint.fontMetrics().width(text);
Chris@127:             int x = width()/2 + 4;
Chris@127:             
Chris@127:             drawVisibleText(paint, x, y, text, OutlinedText);
Chris@127:         }
Chris@127: 
Chris@127:     } else {
Chris@127: 
Chris@127: 	paint.setPen(QColor(50, 50, 50));
Chris@127:     }
Chris@127: 
Chris@127:     if (waveformModel &&
Chris@127:         m_manager &&
Chris@189:         m_manager->shouldShowDuration() &&
Chris@127: 	r.y() + r.height() >= height() - fontHeight - 6) {
Chris@127: 
Chris@150:         size_t modelRate = waveformModel->getSampleRate();
Chris@127: 	size_t mainModelRate = m_manager->getMainModelSampleRate();
Chris@127: 	size_t playbackRate = m_manager->getPlaybackSampleRate();
Chris@127: 	    
Chris@127: 	QString srNote = "";
Chris@127: 
Chris@127: 	// Show (R) for waveform models that will be resampled on
Chris@127: 	// playback, and (X) for waveform models that will be played
Chris@127: 	// at the wrong rate because their rate differs from that of
Chris@127: 	// the main model.
Chris@127: 
Chris@150: 	if (modelRate == mainModelRate) {
Chris@150: 	    if (modelRate != playbackRate) srNote = " " + tr("(R)");
Chris@127: 	} else {
Chris@150: //	    std::cerr << "Sample rate = " << modelRate << ", main model rate = " << mainModelRate << std::endl;
Chris@127: 	    srNote = " " + tr("(X)");
Chris@127: 	}
Chris@127: 
Chris@127: 	QString desc = tr("%1 / %2Hz%3")
Chris@127: 	    .arg(RealTime::frame2RealTime(waveformModel->getEndFrame(),
Chris@127: 					  sampleRate)
Chris@127: 		 .toText(false).c_str())
Chris@150: 	    .arg(modelRate)
Chris@127: 	    .arg(srNote);
Chris@127: 
Chris@127: 	if (r.x() < verticalScaleWidth + 5 + paint.fontMetrics().width(desc)) {
Chris@127: 	    drawVisibleText(paint, verticalScaleWidth + 5,
Chris@127: 			    height() - fontHeight + fontAscent - 6,
Chris@127: 			    desc, OutlinedText);
Chris@127: 	}
Chris@127:     }
Chris@127: 
Chris@127:     if (m_manager &&
Chris@189:         m_manager->shouldShowLayerNames() &&
Chris@127:         r.y() + r.height() >= height() - m_layers.size() * fontHeight - 6) {
Chris@127: 
Chris@127: 	std::vector<QString> texts;
Chris@127: 	int maxTextWidth = 0;
Chris@127: 
Chris@127: 	for (LayerList::iterator i = m_layers.begin(); i != m_layers.end(); ++i) {
Chris@127: 
Chris@127: 	    QString text = (*i)->getLayerPresentationName();
Chris@127: 	    int tw = paint.fontMetrics().width(text);
Chris@127:             bool reduced = false;
Chris@127:             while (tw > width() / 3 && text.length() > 4) {
Chris@127:                 if (!reduced && text.length() > 8) {
Chris@127:                     text = text.left(text.length() - 4);
Chris@127:                 } else {
Chris@127:                     text = text.left(text.length() - 2);
Chris@127:                 }
Chris@127:                 reduced = true;
Chris@127:                 tw = paint.fontMetrics().width(text + "...");
Chris@127:             }
Chris@127:             if (reduced) {
Chris@127:                 texts.push_back(text + "...");
Chris@127:             } else {
Chris@127:                 texts.push_back(text);
Chris@127:             }
Chris@127: 	    if (tw > maxTextWidth) maxTextWidth = tw;
Chris@127: 	}
Chris@127:     
Chris@127: 	int lly = height() - 6;
Chris@133:         int llx = width() - maxTextWidth - 5;
Chris@127: 
Chris@133:         if (m_manager->getZoomWheelsEnabled()) {
Chris@133:             lly -= 20;
Chris@173:             llx -= 36;
Chris@133:         }
Chris@133: 
Chris@133: 	if (r.x() + r.width() >= llx) {
Chris@127: 	    
Chris@127: 	    for (int i = 0; i < texts.size(); ++i) {
Chris@127: 
Chris@127: 		if (i == texts.size() - 1) {
Chris@127: 		    paint.setPen(Qt::black);
Chris@127: 		}
Chris@127: 		
Chris@133: 		drawVisibleText(paint, llx,
Chris@127: 				lly - fontHeight + fontAscent,
Chris@127: 				texts[i], OutlinedText);
Chris@127: 		
Chris@127: 		lly -= fontHeight;
Chris@127: 	    }
Chris@127: 	}
Chris@127:     }
Chris@127: 
Chris@127:     if (m_clickedInRange && m_shiftPressed) {
Chris@127: 	if (m_manager && (m_manager->getToolMode() == ViewManager::NavigateMode)) {
Chris@127: 	    //!!! be nice if this looked a bit more in keeping with the
Chris@127: 	    //selection block
Chris@127: 	    paint.setPen(Qt::blue);
Chris@127: 	    paint.drawRect(m_clickPos.x(), m_clickPos.y(),
Chris@127: 			   m_mousePos.x() - m_clickPos.x(),
Chris@127: 			   m_mousePos.y() - m_clickPos.y());
Chris@127: 	}
Chris@127:     }
Chris@127:     
Chris@127:     if (selectionIsBeingEdited()) {
Chris@127: 
Chris@127: 	int offset = m_mousePos.x() - m_clickPos.x();
Chris@127: 	int p0 = getXForFrame(m_editingSelection.getStartFrame()) + offset;
Chris@127: 	int p1 = getXForFrame(m_editingSelection.getEndFrame()) + offset;
Chris@127: 
Chris@127: 	if (m_editingSelectionEdge < 0) {
Chris@127: 	    p1 = getXForFrame(m_editingSelection.getEndFrame());
Chris@127: 	} else if (m_editingSelectionEdge > 0) {
Chris@127: 	    p0 = getXForFrame(m_editingSelection.getStartFrame());
Chris@127: 	}
Chris@127: 
Chris@127: 	paint.save();
Chris@127: 	if (hasLightBackground()) {
Chris@127: 	    paint.setPen(QPen(Qt::black, 2));
Chris@127: 	} else {
Chris@127: 	    paint.setPen(QPen(Qt::white, 2));
Chris@127: 	}
Chris@127: 
Chris@127: 	//!!! duplicating display policy with View::drawSelections
Chris@127: 
Chris@127: 	if (m_editingSelectionEdge < 0) {
Chris@127: 	    paint.drawLine(p0, 1, p1, 1);
Chris@127: 	    paint.drawLine(p0, 0, p0, height());
Chris@127: 	    paint.drawLine(p0, height() - 1, p1, height() - 1);
Chris@127: 	} else if (m_editingSelectionEdge > 0) {
Chris@127: 	    paint.drawLine(p0, 1, p1, 1);
Chris@127: 	    paint.drawLine(p1, 0, p1, height());
Chris@127: 	    paint.drawLine(p0, height() - 1, p1, height() - 1);
Chris@127: 	} else {
Chris@127: 	    paint.setBrush(Qt::NoBrush);
Chris@127: 	    paint.drawRect(p0, 1, p1 - p0, height() - 2);
Chris@127: 	}
Chris@127: 	paint.restore();
Chris@127:     }
Chris@127: 
Chris@127:     paint.end();
Chris@127: }
Chris@127: 
Chris@127: Selection
Chris@127: Pane::getSelectionAt(int x, bool &closeToLeftEdge, bool &closeToRightEdge) const
Chris@127: {
Chris@127:     closeToLeftEdge = closeToRightEdge = false;
Chris@127: 
Chris@127:     if (!m_manager) return Selection();
Chris@127: 
Chris@127:     long testFrame = getFrameForX(x - 5);
Chris@127:     if (testFrame < 0) {
Chris@127: 	testFrame = getFrameForX(x);
Chris@127: 	if (testFrame < 0) return Selection();
Chris@127:     }
Chris@127: 
Chris@127:     Selection selection = m_manager->getContainingSelection(testFrame, true);
Chris@127:     if (selection.isEmpty()) return selection;
Chris@127: 
Chris@127:     int lx = getXForFrame(selection.getStartFrame());
Chris@127:     int rx = getXForFrame(selection.getEndFrame());
Chris@127:     
Chris@127:     int fuzz = 2;
Chris@127:     if (x < lx - fuzz || x > rx + fuzz) return Selection();
Chris@127: 
Chris@127:     int width = rx - lx;
Chris@127:     fuzz = 3;
Chris@127:     if (width < 12) fuzz = width / 4;
Chris@127:     if (fuzz < 1) fuzz = 1;
Chris@127: 
Chris@127:     if (x < lx + fuzz) closeToLeftEdge = true;
Chris@127:     if (x > rx - fuzz) closeToRightEdge = true;
Chris@127: 
Chris@127:     return selection;
Chris@127: }
Chris@127: 
Chris@174: bool
Chris@174: Pane::canTopLayerMoveVertical()
Chris@174: {
Chris@174:     float vmin, vmax, dmin, dmax;
Chris@174:     if (!getTopLayerDisplayExtents(vmin, vmax, dmin, dmax)) return false;
Chris@174:     if (dmin <= vmin && dmax >= vmax) return false;
Chris@174:     return true;
Chris@174: }
Chris@174: 
Chris@174: bool
Chris@174: Pane::getTopLayerDisplayExtents(float &vmin, float &vmax,
Chris@188:                                 float &dmin, float &dmax,
Chris@188:                                 QString *unit) 
Chris@174: {
Chris@174:     Layer *layer = 0;
Chris@174:     if (getLayerCount() > 0) layer = getLayer(getLayerCount() - 1);
Chris@174:     if (!layer) return false;
Chris@174:     bool vlog;
Chris@174:     QString vunit;
Chris@188:     bool rv = (layer->getValueExtents(vmin, vmax, vlog, vunit) &&
Chris@188:                layer->getDisplayExtents(dmin, dmax));
Chris@188:     if (unit) *unit = vunit;
Chris@188:     return rv;
Chris@174: }
Chris@174: 
Chris@174: bool
Chris@174: Pane::setTopLayerDisplayExtents(float dmin, float dmax)
Chris@174: {
Chris@174:     Layer *layer = 0;
Chris@174:     if (getLayerCount() > 0) layer = getLayer(getLayerCount() - 1);
Chris@174:     if (!layer) return false;
Chris@174:     return layer->setDisplayExtents(dmin, dmax);
Chris@174: }
Chris@174: 
Chris@127: void
Chris@127: Pane::mousePressEvent(QMouseEvent *e)
Chris@127: {
Chris@127:     if (e->buttons() & Qt::RightButton) {
Chris@189:         emit contextHelpChanged("");
Chris@127:         emit rightButtonMenuRequested(mapToGlobal(e->pos()));
Chris@127:         return;
Chris@127:     }
Chris@127: 
Chris@127:     m_clickPos = e->pos();
Chris@127:     m_clickedInRange = true;
Chris@127:     m_editingSelection = Selection();
Chris@127:     m_editingSelectionEdge = 0;
Chris@127:     m_shiftPressed = (e->modifiers() & Qt::ShiftModifier);
Chris@127:     m_ctrlPressed = (e->modifiers() & Qt::ControlModifier);
Chris@150:     m_dragMode = UnresolvedDrag;
Chris@127: 
Chris@127:     ViewManager::ToolMode mode = ViewManager::NavigateMode;
Chris@127:     if (m_manager) mode = m_manager->getToolMode();
Chris@127: 
Chris@127:     m_navigating = false;
Chris@127: 
Chris@127:     if (mode == ViewManager::NavigateMode || (e->buttons() & Qt::MidButton)) {
Chris@127: 
Chris@127: 	if (mode != ViewManager::NavigateMode) {
Chris@127: 	    setCursor(Qt::PointingHandCursor);
Chris@127: 	}
Chris@127: 
Chris@127: 	m_navigating = true;
Chris@127: 	m_dragCentreFrame = m_centreFrame;
Chris@136:         m_dragStartMinValue = 0;
Chris@174:         
Chris@174:         float vmin, vmax, dmin, dmax;
Chris@174:         if (getTopLayerDisplayExtents(vmin, vmax, dmin, dmax)) {
Chris@174:             m_dragStartMinValue = dmin;
Chris@136:         }
Chris@136: 
Chris@127:     } else if (mode == ViewManager::SelectMode) {
Chris@127: 
Chris@127: 	bool closeToLeft = false, closeToRight = false;
Chris@127: 	Selection selection = getSelectionAt(e->x(), closeToLeft, closeToRight);
Chris@127: 
Chris@127: 	if ((closeToLeft || closeToRight) && !(closeToLeft && closeToRight)) {
Chris@127: 
Chris@127: 	    m_manager->removeSelection(selection);
Chris@127: 
Chris@127: 	    if (closeToLeft) {
Chris@127: 		m_selectionStartFrame = selection.getEndFrame();
Chris@127: 	    } else {
Chris@127: 		m_selectionStartFrame = selection.getStartFrame();
Chris@127: 	    }
Chris@127: 
Chris@127: 	    m_manager->setInProgressSelection(selection, false);
Chris@127: 	    m_resizing = true;
Chris@127: 	
Chris@127: 	} else {
Chris@127: 
Chris@127: 	    int mouseFrame = getFrameForX(e->x());
Chris@127: 	    size_t resolution = 1;
Chris@127: 	    int snapFrame = mouseFrame;
Chris@127: 	
Chris@127: 	    Layer *layer = getSelectedLayer();
Chris@127: 	    if (layer && !m_shiftPressed) {
Chris@127: 		layer->snapToFeatureFrame(this, snapFrame,
Chris@127: 					  resolution, Layer::SnapLeft);
Chris@127: 	    }
Chris@127: 	    
Chris@127: 	    if (snapFrame < 0) snapFrame = 0;
Chris@127: 	    m_selectionStartFrame = snapFrame;
Chris@127: 	    if (m_manager) {
Chris@127: 		m_manager->setInProgressSelection(Selection(snapFrame,
Chris@127: 							    snapFrame + resolution),
Chris@127: 						  !m_ctrlPressed);
Chris@127: 	    }
Chris@127: 
Chris@127: 	    m_resizing = false;
Chris@127: 	}
Chris@127: 
Chris@127: 	update();
Chris@127: 
Chris@127:     } else if (mode == ViewManager::DrawMode) {
Chris@127: 
Chris@127: 	Layer *layer = getSelectedLayer();
Chris@127: 	if (layer && layer->isLayerEditable()) {
Chris@127: 	    layer->drawStart(this, e);
Chris@127: 	}
Chris@127: 
Chris@127:     } else if (mode == ViewManager::EditMode) {
Chris@127: 
Chris@127: 	if (!editSelectionStart(e)) {
Chris@127: 	    Layer *layer = getSelectedLayer();
Chris@127: 	    if (layer && layer->isLayerEditable()) {
Chris@127: 		layer->editStart(this, e);
Chris@127: 	    }
Chris@127: 	}
Chris@127:     }
Chris@127: 
Chris@127:     emit paneInteractedWith();
Chris@127: }
Chris@127: 
Chris@127: void
Chris@127: Pane::mouseReleaseEvent(QMouseEvent *e)
Chris@127: {
Chris@127:     if (e->buttons() & Qt::RightButton) {
Chris@127:         return;
Chris@127:     }
Chris@127: 
Chris@127:     ViewManager::ToolMode mode = ViewManager::NavigateMode;
Chris@127:     if (m_manager) mode = m_manager->getToolMode();
Chris@127: 
Chris@127:     if (m_clickedInRange) {
Chris@127: 	mouseMoveEvent(e);
Chris@127:     }
Chris@127: 
Chris@127:     if (m_navigating || mode == ViewManager::NavigateMode) {
Chris@127: 
Chris@127: 	m_navigating = false;
Chris@127: 
Chris@127: 	if (mode != ViewManager::NavigateMode) {
Chris@127: 	    // restore cursor
Chris@127: 	    toolModeChanged();
Chris@127: 	}
Chris@127: 
Chris@127: 	if (m_shiftPressed) {
Chris@127: 
Chris@127: 	    int x0 = std::min(m_clickPos.x(), m_mousePos.x());
Chris@127: 	    int x1 = std::max(m_clickPos.x(), m_mousePos.x());
Chris@127: 
Chris@127: 	    int y0 = std::min(m_clickPos.y(), m_mousePos.y());
Chris@127: 	    int y1 = std::max(m_clickPos.y(), m_mousePos.y());
Chris@127: 
Chris@174:             zoomToRegion(x0, y0, x1, y1);
Chris@127: 	}
Chris@127: 
Chris@127:     } else if (mode == ViewManager::SelectMode) {
Chris@127: 
Chris@127: 	if (m_manager && m_manager->haveInProgressSelection()) {
Chris@127: 
Chris@127: 	    bool exclusive;
Chris@127: 	    Selection selection = m_manager->getInProgressSelection(exclusive);
Chris@127: 	    
Chris@127: 	    if (selection.getEndFrame() < selection.getStartFrame() + 2) {
Chris@127: 		selection = Selection();
Chris@127: 	    }
Chris@127: 	    
Chris@127: 	    m_manager->clearInProgressSelection();
Chris@127: 	    
Chris@127: 	    if (exclusive) {
Chris@127: 		m_manager->setSelection(selection);
Chris@127: 	    } else {
Chris@127: 		m_manager->addSelection(selection);
Chris@127: 	    }
Chris@127: 	}
Chris@127: 	
Chris@127: 	update();
Chris@127: 
Chris@127:     } else if (mode == ViewManager::DrawMode) {
Chris@127: 
Chris@127: 	Layer *layer = getSelectedLayer();
Chris@127: 	if (layer && layer->isLayerEditable()) {
Chris@127: 	    layer->drawEnd(this, e);
Chris@127: 	    update();
Chris@127: 	}
Chris@127: 
Chris@127:     } else if (mode == ViewManager::EditMode) {
Chris@127: 
Chris@127: 	if (!editSelectionEnd(e)) {
Chris@127: 	    Layer *layer = getSelectedLayer();
Chris@127: 	    if (layer && layer->isLayerEditable()) {
Chris@127: 		layer->editEnd(this, e);
Chris@127: 		update();
Chris@127: 	    }
Chris@127: 	}
Chris@127:     }
Chris@127: 
Chris@127:     m_clickedInRange = false;
Chris@127: 
Chris@127:     emit paneInteractedWith();
Chris@127: }
Chris@127: 
Chris@127: void
Chris@127: Pane::mouseMoveEvent(QMouseEvent *e)
Chris@127: {
Chris@127:     if (e->buttons() & Qt::RightButton) {
Chris@127:         return;
Chris@127:     }
Chris@127: 
Chris@189:     updateContextHelp(&e->pos());
Chris@189: 
Chris@127:     ViewManager::ToolMode mode = ViewManager::NavigateMode;
Chris@127:     if (m_manager) mode = m_manager->getToolMode();
Chris@127: 
Chris@127:     QPoint prevPoint = m_identifyPoint;
Chris@127:     m_identifyPoint = e->pos();
Chris@127: 
Chris@127:     if (!m_clickedInRange) {
Chris@127: 	
Chris@127: 	if (mode == ViewManager::SelectMode) {
Chris@127: 	    bool closeToLeft = false, closeToRight = false;
Chris@127: 	    getSelectionAt(e->x(), closeToLeft, closeToRight);
Chris@127: 	    if ((closeToLeft || closeToRight) && !(closeToLeft && closeToRight)) {
Chris@127: 		setCursor(Qt::SizeHorCursor);
Chris@127: 	    } else {
Chris@127: 		setCursor(Qt::ArrowCursor);
Chris@127: 	    }
Chris@127: 	}
Chris@127: 
Chris@127:         if (!m_manager->isPlaying()) {
Chris@127: 
Chris@174:             if (getSelectedLayer()) {
Chris@127: 
Chris@174:                 bool previouslyIdentifying = m_identifyFeatures;
Chris@174:                 m_identifyFeatures = true;
Chris@174:                 
Chris@174:                 if (m_identifyFeatures != previouslyIdentifying ||
Chris@174:                     m_identifyPoint != prevPoint) {
Chris@174:                     update();
Chris@174:                 }
Chris@174:             }
Chris@127:         }
Chris@127: 
Chris@127: 	return;
Chris@127:     }
Chris@127: 
Chris@127:     if (m_navigating || mode == ViewManager::NavigateMode) {
Chris@127: 
Chris@127: 	if (m_shiftPressed) {
Chris@127: 
Chris@127: 	    m_mousePos = e->pos();
Chris@127: 	    update();
Chris@127: 
Chris@127: 	} else {
Chris@127: 
Chris@174:             dragTopLayer(e);
Chris@150:         }
Chris@127: 
Chris@127:     } else if (mode == ViewManager::SelectMode) {
Chris@127: 
Chris@174:         dragExtendSelection(e);
Chris@127: 
Chris@127:     } else if (mode == ViewManager::DrawMode) {
Chris@127: 
Chris@127: 	Layer *layer = getSelectedLayer();
Chris@127: 	if (layer && layer->isLayerEditable()) {
Chris@127: 	    layer->drawDrag(this, e);
Chris@127: 	}
Chris@127: 
Chris@127:     } else if (mode == ViewManager::EditMode) {
Chris@127: 
Chris@127: 	if (!editSelectionDrag(e)) {
Chris@127: 	    Layer *layer = getSelectedLayer();
Chris@127: 	    if (layer && layer->isLayerEditable()) {
Chris@127: 		layer->editDrag(this, e);
Chris@127: 	    }
Chris@127: 	}
Chris@127:     }
Chris@127: }
Chris@127: 
Chris@127: void
Chris@174: Pane::zoomToRegion(int x0, int y0, int x1, int y1)
Chris@174: {
Chris@174:     int w = x1 - x0;
Chris@174: 	    
Chris@174:     long newStartFrame = getFrameForX(x0);
Chris@174: 	    
Chris@174:     long visibleFrames = getEndFrame() - getStartFrame();
Chris@174:     if (newStartFrame <= -visibleFrames) {
Chris@174:         newStartFrame  = -visibleFrames + 1;
Chris@174:     }
Chris@174: 	    
Chris@174:     if (newStartFrame >= long(getModelsEndFrame())) {
Chris@174:         newStartFrame  = getModelsEndFrame() - 1;
Chris@174:     }
Chris@174: 	    
Chris@174:     float ratio = float(w) / float(width());
Chris@174: //	std::cerr << "ratio: " << ratio << std::endl;
Chris@174:     size_t newZoomLevel = (size_t)nearbyint(m_zoomLevel * ratio);
Chris@174:     if (newZoomLevel < 1) newZoomLevel = 1;
Chris@174: 
Chris@174: //	std::cerr << "start: " << m_startFrame << ", level " << m_zoomLevel << std::endl;
Chris@174:     setZoomLevel(getZoomConstraintBlockSize(newZoomLevel));
Chris@174:     setStartFrame(newStartFrame);
Chris@174: 
Chris@174:     QString unit;
Chris@174:     float min, max;
Chris@174:     bool log;
Chris@174:     Layer *layer = 0;
Chris@174:     for (LayerList::const_iterator i = m_layers.begin();
Chris@174:          i != m_layers.end(); ++i) { 
Chris@174:         if ((*i)->getValueExtents(min, max, log, unit) &&
Chris@174:             (*i)->getDisplayExtents(min, max)) {
Chris@174:             layer = *i;
Chris@174:             break;
Chris@174:         }
Chris@174:     }
Chris@174:             
Chris@174:     if (layer) {
Chris@174:         if (log) {
Chris@174:             min = (min < 0.0) ? -log10f(-min) : (min == 0.0) ? 0.0 : log10f(min);
Chris@174:             max = (max < 0.0) ? -log10f(-max) : (max == 0.0) ? 0.0 : log10f(max);
Chris@174:         }
Chris@174:         float rmin = min + ((max - min) * (height() - y1)) / height();
Chris@174:         float rmax = min + ((max - min) * (height() - y0)) / height();
Chris@174:         std::cerr << "min: " << min << ", max: " << max << ", y0: " << y0 << ", y1: " << y1 << ", h: " << height() << ", rmin: " << rmin << ", rmax: " << rmax << std::endl;
Chris@174:         if (log) {
Chris@174:             rmin = powf(10, rmin);
Chris@174:             rmax = powf(10, rmax);
Chris@174:         }
Chris@174:         std::cerr << "finally: rmin: " << rmin << ", rmax: " << rmax << " " << unit.toStdString() << std::endl;
Chris@174: 
Chris@174:         layer->setDisplayExtents(rmin, rmax);
Chris@174:         updateVerticalPanner();
Chris@174:     }
Chris@174: }
Chris@174: 
Chris@174: void
Chris@174: Pane::dragTopLayer(QMouseEvent *e)
Chris@174: {
Chris@174:     // We need to avoid making it too easy to drag both
Chris@174:     // horizontally and vertically, in the case where the
Chris@174:     // mouse is moved "mostly" in horizontal or vertical axis
Chris@174:     // with only a small variation in the other axis.  This is
Chris@174:     // particularly important during playback (when we want to
Chris@174:     // avoid small horizontal motions) or in slow refresh
Chris@174:     // layers like spectrogram (when we want to avoid small
Chris@174:     // vertical motions).
Chris@174:     // 
Chris@174:     // To this end we have horizontal and vertical thresholds
Chris@174:     // and a series of states: unresolved, horizontally or
Chris@174:     // vertically constrained, free.
Chris@174:     //
Chris@174:     // When the mouse first moves, we're unresolved: we
Chris@174:     // restrict ourselves to whichever direction seems safest,
Chris@174:     // until the mouse has passed a small threshold distance
Chris@174:     // from the click point.  Then we lock in to one of the
Chris@174:     // constrained modes, based on which axis that distance
Chris@174:     // was measured in first.  Finally, if it turns out we've
Chris@174:     // also moved more than a certain larger distance in the
Chris@174:     // other direction as well, we may switch into free mode.
Chris@174:     // 
Chris@174:     // If the top layer is incapable of being dragged
Chris@174:     // vertically, the logic is short circuited.
Chris@174: 
Chris@174:     int xdiff = e->x() - m_clickPos.x();
Chris@174:     int ydiff = e->y() - m_clickPos.y();
Chris@174:     int smallThreshold = 10, bigThreshold = 50;
Chris@174: 
Chris@174:     bool canMoveVertical = canTopLayerMoveVertical();
Chris@174:     bool canMoveHorizontal = true;
Chris@174: 
Chris@174:     if (!canMoveHorizontal) {
Chris@174:         m_dragMode = HorizontalDrag;
Chris@174:     }
Chris@174: 
Chris@174:     if (m_dragMode == UnresolvedDrag) {
Chris@174: 
Chris@174:         if (abs(ydiff) > smallThreshold &&
Chris@174:             abs(ydiff) > abs(xdiff) * 2) {
Chris@174:             m_dragMode = VerticalDrag;
Chris@174:         } else if (abs(xdiff) > smallThreshold &&
Chris@174:                    abs(xdiff) > abs(ydiff) * 2) {
Chris@174:             m_dragMode = HorizontalDrag;
Chris@174:         } else if (abs(xdiff) > smallThreshold &&
Chris@174:                    abs(ydiff) > smallThreshold) {
Chris@174:             m_dragMode = FreeDrag;
Chris@174:         } else {
Chris@174:             // When playing, we don't want to disturb the play
Chris@174:             // position too easily; when not playing, we don't
Chris@174:             // want to move up/down too easily
Chris@174:             if (m_manager && m_manager->isPlaying()) {
Chris@174:                 canMoveHorizontal = false;
Chris@174:             } else {
Chris@174:                 canMoveVertical = false;
Chris@174:             }
Chris@174:         }
Chris@174:     }
Chris@174: 
Chris@174:     if (m_dragMode == VerticalDrag) {
Chris@174:         if (abs(xdiff) > bigThreshold) m_dragMode = FreeDrag;
Chris@174:         else canMoveHorizontal = false;
Chris@174:     }
Chris@174: 
Chris@174:     if (m_dragMode == HorizontalDrag && canMoveVertical) {
Chris@174:         if (abs(ydiff) > bigThreshold) m_dragMode = FreeDrag;
Chris@174:         else canMoveVertical = false;
Chris@174:     }
Chris@174: 
Chris@174:     if (canMoveHorizontal) {
Chris@174: 
Chris@174:         long frameOff = getFrameForX(e->x()) - getFrameForX(m_clickPos.x());
Chris@174: 
Chris@174:         size_t newCentreFrame = m_dragCentreFrame;
Chris@174: 	    
Chris@174:         if (frameOff < 0) {
Chris@174:             newCentreFrame -= frameOff;
Chris@174:         } else if (newCentreFrame >= size_t(frameOff)) {
Chris@174:             newCentreFrame -= frameOff;
Chris@174:         } else {
Chris@174:             newCentreFrame = 0;
Chris@174:         }
Chris@174: 	    
Chris@174:         if (newCentreFrame >= getModelsEndFrame()) {
Chris@174:             newCentreFrame = getModelsEndFrame();
Chris@174:             if (newCentreFrame > 0) --newCentreFrame;
Chris@174:         }
Chris@174:                 
Chris@174:         if (getXForFrame(m_centreFrame) != getXForFrame(newCentreFrame)) {
Chris@174:             setCentreFrame(newCentreFrame);
Chris@174:         }
Chris@174:     }
Chris@174: 
Chris@174:     if (canMoveVertical) {
Chris@174: 
Chris@174:         float vmin = 0.f, vmax = 0.f;
Chris@174:         float dmin = 0.f, dmax = 0.f;
Chris@174: 
Chris@174:         if (getTopLayerDisplayExtents(vmin, vmax, dmin, dmax)) {
Chris@174: 
Chris@174:             std::cerr << "ydiff = " << ydiff << std::endl;
Chris@174: 
Chris@174:             float perpix = (dmax - dmin) / height();
Chris@174:             float valdiff = ydiff * perpix;
Chris@174:             std::cerr << "valdiff = " << valdiff << std::endl;
Chris@174: 
Chris@174:             float newmin = m_dragStartMinValue + valdiff;
Chris@174:             float newmax = m_dragStartMinValue + (dmax - dmin) + valdiff;
Chris@174:             if (newmin < vmin) {
Chris@174:                 newmax += vmin - newmin;
Chris@174:                 newmin += vmin - newmin;
Chris@174:             }
Chris@174:             if (newmax > vmax) {
Chris@174:                 newmin -= newmax - vmax;
Chris@174:                 newmax -= newmax - vmax;
Chris@174:             }
Chris@174:             std::cerr << "(" << dmin << ", " << dmax << ") -> ("
Chris@174:                       << newmin << ", " << newmax << ") (drag start " << m_dragStartMinValue << ")" << std::endl;
Chris@174: 
Chris@174:             setTopLayerDisplayExtents(newmin, newmax);
Chris@174:             updateVerticalPanner();
Chris@174:         }
Chris@174:     }
Chris@174: }
Chris@174: 
Chris@174: void
Chris@174: Pane::dragExtendSelection(QMouseEvent *e)
Chris@174: {
Chris@174:     int mouseFrame = getFrameForX(e->x());
Chris@174:     size_t resolution = 1;
Chris@174:     int snapFrameLeft = mouseFrame;
Chris@174:     int snapFrameRight = mouseFrame;
Chris@174: 	
Chris@174:     Layer *layer = getSelectedLayer();
Chris@174:     if (layer && !m_shiftPressed) {
Chris@174:         layer->snapToFeatureFrame(this, snapFrameLeft,
Chris@174:                                   resolution, Layer::SnapLeft);
Chris@174:         layer->snapToFeatureFrame(this, snapFrameRight,
Chris@174:                                   resolution, Layer::SnapRight);
Chris@174:     }
Chris@174: 	
Chris@174: //	std::cerr << "snap: frame = " << mouseFrame << ", start frame = " << m_selectionStartFrame << ", left = " << snapFrameLeft << ", right = " << snapFrameRight << std::endl;
Chris@174: 
Chris@174:     if (snapFrameLeft < 0) snapFrameLeft = 0;
Chris@174:     if (snapFrameRight < 0) snapFrameRight = 0;
Chris@174: 	
Chris@174:     size_t min, max;
Chris@174: 	
Chris@174:     if (m_selectionStartFrame > snapFrameLeft) {
Chris@174:         min = snapFrameLeft;
Chris@174:         max = m_selectionStartFrame;
Chris@174:     } else if (snapFrameRight > m_selectionStartFrame) {
Chris@174:         min = m_selectionStartFrame;
Chris@174:         max = snapFrameRight;
Chris@174:     } else {
Chris@174:         min = snapFrameLeft;
Chris@174:         max = snapFrameRight;
Chris@174:     }
Chris@174: 
Chris@174:     if (m_manager) {
Chris@174:         m_manager->setInProgressSelection(Selection(min, max),
Chris@174:                                           !m_resizing && !m_ctrlPressed);
Chris@174:     }
Chris@174: 
Chris@174:     bool doScroll = false;
Chris@174:     if (!m_manager) doScroll = true;
Chris@174:     if (!m_manager->isPlaying()) doScroll = true;
Chris@174:     if (m_followPlay != PlaybackScrollContinuous) doScroll = true;
Chris@174: 
Chris@174:     if (doScroll) {
Chris@174:         int offset = mouseFrame - getStartFrame();
Chris@174:         int available = getEndFrame() - getStartFrame();
Chris@174:         if (offset >= available * 0.95) {
Chris@174:             int move = int(offset - available * 0.95) + 1;
Chris@174:             setCentreFrame(m_centreFrame + move);
Chris@174:         } else if (offset <= available * 0.10) {
Chris@174:             int move = int(available * 0.10 - offset) + 1;
Chris@174:             if (m_centreFrame > move) {
Chris@174:                 setCentreFrame(m_centreFrame - move);
Chris@174:             } else {
Chris@174:                 setCentreFrame(0);
Chris@174:             }
Chris@174:         }
Chris@174:     }
Chris@174: 
Chris@174:     update();
Chris@174: }
Chris@174: 
Chris@174: void
Chris@127: Pane::mouseDoubleClickEvent(QMouseEvent *e)
Chris@127: {
Chris@127:     if (e->buttons() & Qt::RightButton) {
Chris@127:         return;
Chris@127:     }
Chris@127: 
Chris@127: //    std::cerr << "mouseDoubleClickEvent" << std::endl;
Chris@127: 
Chris@127:     m_clickPos = e->pos();
Chris@127:     m_clickedInRange = true;
Chris@127:     m_shiftPressed = (e->modifiers() & Qt::ShiftModifier);
Chris@127:     m_ctrlPressed = (e->modifiers() & Qt::ControlModifier);
Chris@127: 
Chris@127:     ViewManager::ToolMode mode = ViewManager::NavigateMode;
Chris@127:     if (m_manager) mode = m_manager->getToolMode();
Chris@127: 
Chris@127:     if (mode == ViewManager::NavigateMode ||
Chris@127:         mode == ViewManager::EditMode) {
Chris@127: 
Chris@127: 	Layer *layer = getSelectedLayer();
Chris@127: 	if (layer && layer->isLayerEditable()) {
Chris@127: 	    layer->editOpen(this, e);
Chris@127: 	}
Chris@127:     }
Chris@127: }
Chris@127: 
Chris@127: void
Chris@127: Pane::leaveEvent(QEvent *)
Chris@127: {
Chris@127:     bool previouslyIdentifying = m_identifyFeatures;
Chris@127:     m_identifyFeatures = false;
Chris@127:     if (previouslyIdentifying) update();
Chris@189:     emit contextHelpChanged("");
Chris@127: }
Chris@127: 
Chris@127: void
Chris@133: Pane::resizeEvent(QResizeEvent *)
Chris@133: {
Chris@133:     updateHeadsUpDisplay();
Chris@133: }
Chris@133: 
Chris@133: void
Chris@127: Pane::wheelEvent(QWheelEvent *e)
Chris@127: {
Chris@127:     //std::cerr << "wheelEvent, delta " << e->delta() << std::endl;
Chris@127: 
Chris@127:     int count = e->delta();
Chris@127: 
Chris@127:     if (count > 0) {
Chris@127: 	if (count >= 120) count /= 120;
Chris@127: 	else count = 1;
Chris@127:     } 
Chris@127: 
Chris@127:     if (count < 0) {
Chris@127: 	if (count <= -120) count /= 120;
Chris@127: 	else count = -1;
Chris@127:     }
Chris@127: 
Chris@127:     if (e->modifiers() & Qt::ControlModifier) {
Chris@127: 
Chris@127: 	// Scroll left or right, rapidly
Chris@127: 
Chris@127: 	if (getStartFrame() < 0 && 
Chris@127: 	    getEndFrame() >= getModelsEndFrame()) return;
Chris@127: 
Chris@127: 	long delta = ((width() / 2) * count * m_zoomLevel);
Chris@127: 
Chris@127: 	if (int(m_centreFrame) < delta) {
Chris@127: 	    setCentreFrame(0);
Chris@127: 	} else if (int(m_centreFrame) - delta >= int(getModelsEndFrame())) {
Chris@127: 	    setCentreFrame(getModelsEndFrame());
Chris@127: 	} else {
Chris@127: 	    setCentreFrame(m_centreFrame - delta);
Chris@127: 	}
Chris@127: 
Chris@127:     } else {
Chris@127: 
Chris@127: 	// Zoom in or out
Chris@127: 
Chris@127: 	int newZoomLevel = m_zoomLevel;
Chris@127:   
Chris@127: 	while (count > 0) {
Chris@127: 	    if (newZoomLevel <= 2) {
Chris@127: 		newZoomLevel = 1;
Chris@127: 		break;
Chris@127: 	    }
Chris@127: 	    newZoomLevel = getZoomConstraintBlockSize(newZoomLevel - 1, 
Chris@127: 						      ZoomConstraint::RoundDown);
Chris@127: 	    --count;
Chris@127: 	}
Chris@127: 	
Chris@127: 	while (count < 0) {
Chris@127: 	    newZoomLevel = getZoomConstraintBlockSize(newZoomLevel + 1,
Chris@127: 						      ZoomConstraint::RoundUp);
Chris@127: 	    ++count;
Chris@127: 	}
Chris@127: 	
Chris@127: 	if (newZoomLevel != m_zoomLevel) {
Chris@127: 	    setZoomLevel(newZoomLevel);
Chris@127: 	}
Chris@127:     }
Chris@127: 
Chris@127:     emit paneInteractedWith();
Chris@127: }
Chris@127: 
Chris@132: void
Chris@132: Pane::horizontalThumbwheelMoved(int value)
Chris@132: {
Chris@137:     //!!! dupe with updateHeadsUpDisplay
Chris@137: 
Chris@132:     int count = 0;
Chris@132:     int level = 1;
Chris@137: 
Chris@137: 
Chris@137:     //!!! pull out into function (presumably in View)
Chris@137:     bool haveConstraint = false;
Chris@137:     for (LayerList::const_iterator i = m_layers.begin(); i != m_layers.end();
Chris@137:          ++i) {
Chris@137:         if ((*i)->getZoomConstraint() && !(*i)->supportsOtherZoomLevels()) {
Chris@137:             haveConstraint = true;
Chris@137:             break;
Chris@137:         }
Chris@132:     }
Chris@132: 
Chris@137:     if (haveConstraint) {
Chris@137:         while (true) {
Chris@137:             if (m_hthumb->getMaximumValue() - value == count) break;
Chris@137:             int newLevel = getZoomConstraintBlockSize(level + 1,
Chris@137:                                                       ZoomConstraint::RoundUp);
Chris@137:             if (newLevel == level) break;
Chris@137:             level = newLevel;
Chris@137:             if (++count == 50) break;
Chris@137:         }
Chris@137:     } else {
Chris@137:         while (true) {
Chris@137:             if (m_hthumb->getMaximumValue() - value == count) break;
Chris@137:             int step = level / 10;
Chris@137:             int pwr = 0;
Chris@137:             while (step > 0) {
Chris@137:                 ++pwr;
Chris@137:                 step /= 2;
Chris@137:             }
Chris@137:             step = 1;
Chris@137:             while (pwr > 0) {
Chris@137:                 step *= 2;
Chris@137:                 --pwr;
Chris@137:             }
Chris@137: //            std::cerr << level << std::endl;
Chris@137:             level += step;
Chris@137:             if (++count == 100 || level > 262144) break;
Chris@137:         }
Chris@137:     }
Chris@137:         
Chris@137:     std::cerr << "new level is " << level << std::endl;
Chris@132:     setZoomLevel(level);
Chris@132: }    
Chris@132: 
Chris@132: void
Chris@132: Pane::verticalThumbwheelMoved(int value)
Chris@132: {
Chris@133:     Layer *layer = 0;
Chris@133:     if (getLayerCount() > 0) layer = getLayer(getLayerCount() - 1);
Chris@133:     if (layer) {
Chris@133:         int defaultStep = 0;
Chris@133:         int max = layer->getVerticalZoomSteps(defaultStep);
Chris@133:         if (max == 0) {
Chris@133:             updateHeadsUpDisplay();
Chris@133:             return;
Chris@133:         }
Chris@133:         if (value > max) {
Chris@133:             value = max;
Chris@133:         }
Chris@133:         layer->setVerticalZoomStep(value);
Chris@174:         updateVerticalPanner();
Chris@133:     }
Chris@132: }    
Chris@132: 
Chris@174: void
Chris@174: Pane::verticalPannerMoved(float x0, float y0, float w, float h)
Chris@174: {
Chris@174:     float vmin, vmax, dmin, dmax;
Chris@174:     if (!getTopLayerDisplayExtents(vmin, vmax, dmin, dmax)) return;
Chris@174:     float y1 = y0 + h;
Chris@174:     float newmax = vmin + ((1.0 - y0) * (vmax - vmin));
Chris@174:     float newmin = vmin + ((1.0 - y1) * (vmax - vmin));
Chris@174:     std::cerr << "verticalPannerMoved: (" << x0 << "," << y0 << "," << w
Chris@174:               << "," << h << ") -> (" << newmin << "," << newmax << ")" << std::endl;
Chris@174:     setTopLayerDisplayExtents(newmin, newmax);
Chris@174: }
Chris@174: 
Chris@188: void
Chris@188: Pane::editVerticalPannerExtents()
Chris@188: {
Chris@188:     if (!m_vpan || !m_manager || !m_manager->getZoomWheelsEnabled()) return;
Chris@188: 
Chris@188:     float vmin, vmax, dmin, dmax;
Chris@188:     QString unit;
Chris@188:     if (!getTopLayerDisplayExtents(vmin, vmax, dmin, dmax, &unit)
Chris@188:         || vmax == vmin) {
Chris@188:         return;
Chris@188:     }
Chris@188: 
Chris@188:     RangeInputDialog dialog(tr("Enter new range"),
Chris@188:                             tr("New vertical display range, from %1 to %2 %4:")
Chris@188:                             .arg(vmin).arg(vmax).arg(unit),
Chris@188:                             unit, vmin, vmax, this);
Chris@188:     dialog.setRange(dmin, dmax);
Chris@188: 
Chris@188:     if (dialog.exec() == QDialog::Accepted) {
Chris@188:         dialog.getRange(dmin, dmax);
Chris@188:         setTopLayerDisplayExtents(dmin, dmax);
Chris@188:         updateVerticalPanner();
Chris@188:     }
Chris@188: }
Chris@188: 
Chris@127: bool
Chris@127: Pane::editSelectionStart(QMouseEvent *e)
Chris@127: {
Chris@127:     if (!m_identifyFeatures ||
Chris@127: 	!m_manager ||
Chris@127: 	m_manager->getToolMode() != ViewManager::EditMode) {
Chris@127: 	return false;
Chris@127:     }
Chris@127: 
Chris@127:     bool closeToLeft, closeToRight;
Chris@127:     Selection s(getSelectionAt(e->x(), closeToLeft, closeToRight));
Chris@127:     if (s.isEmpty()) return false;
Chris@127:     m_editingSelection = s;
Chris@127:     m_editingSelectionEdge = (closeToLeft ? -1 : closeToRight ? 1 : 0);
Chris@127:     m_mousePos = e->pos();
Chris@127:     return true;
Chris@127: }
Chris@127: 
Chris@127: bool
Chris@127: Pane::editSelectionDrag(QMouseEvent *e)
Chris@127: {
Chris@127:     if (m_editingSelection.isEmpty()) return false;
Chris@127:     m_mousePos = e->pos();
Chris@127:     update();
Chris@127:     return true;
Chris@127: }
Chris@127: 
Chris@127: bool
Chris@127: Pane::editSelectionEnd(QMouseEvent *e)
Chris@127: {
Chris@127:     if (m_editingSelection.isEmpty()) return false;
Chris@127: 
Chris@127:     int offset = m_mousePos.x() - m_clickPos.x();
Chris@127:     Layer *layer = getSelectedLayer();
Chris@127: 
Chris@127:     if (offset == 0 || !layer) {
Chris@127: 	m_editingSelection = Selection();
Chris@127: 	return true;
Chris@127:     }
Chris@127: 
Chris@127:     int p0 = getXForFrame(m_editingSelection.getStartFrame()) + offset;
Chris@127:     int p1 = getXForFrame(m_editingSelection.getEndFrame()) + offset;
Chris@127: 
Chris@127:     long f0 = getFrameForX(p0);
Chris@127:     long f1 = getFrameForX(p1);
Chris@127: 
Chris@127:     Selection newSelection(f0, f1);
Chris@127:     
Chris@127:     if (m_editingSelectionEdge == 0) {
Chris@127: 	
Chris@127:         CommandHistory::getInstance()->startCompoundOperation
Chris@127:             (tr("Drag Selection"), true);
Chris@127: 
Chris@127: 	layer->moveSelection(m_editingSelection, f0);
Chris@127: 	
Chris@127:     } else {
Chris@127: 	
Chris@127:         CommandHistory::getInstance()->startCompoundOperation
Chris@127:             (tr("Resize Selection"), true);
Chris@127: 
Chris@127: 	if (m_editingSelectionEdge < 0) {
Chris@127: 	    f1 = m_editingSelection.getEndFrame();
Chris@127: 	} else {
Chris@127: 	    f0 = m_editingSelection.getStartFrame();
Chris@127: 	}
Chris@127: 
Chris@127: 	newSelection = Selection(f0, f1);
Chris@127: 	layer->resizeSelection(m_editingSelection, newSelection);
Chris@127:     }
Chris@127:     
Chris@127:     m_manager->removeSelection(m_editingSelection);
Chris@127:     m_manager->addSelection(newSelection);
Chris@127: 
Chris@127:     CommandHistory::getInstance()->endCompoundOperation();
Chris@127: 
Chris@127:     m_editingSelection = Selection();
Chris@127:     return true;
Chris@127: }
Chris@127: 
Chris@127: void
Chris@127: Pane::toolModeChanged()
Chris@127: {
Chris@127:     ViewManager::ToolMode mode = m_manager->getToolMode();
Chris@127: //    std::cerr << "Pane::toolModeChanged(" << mode << ")" << std::endl;
Chris@127: 
Chris@127:     switch (mode) {
Chris@127: 
Chris@127:     case ViewManager::NavigateMode:
Chris@127: 	setCursor(Qt::PointingHandCursor);
Chris@127: 	break;
Chris@127: 	
Chris@127:     case ViewManager::SelectMode:
Chris@127: 	setCursor(Qt::ArrowCursor);
Chris@127: 	break;
Chris@127: 	
Chris@127:     case ViewManager::EditMode:
Chris@127: 	setCursor(Qt::UpArrowCursor);
Chris@127: 	break;
Chris@127: 	
Chris@127:     case ViewManager::DrawMode:
Chris@127: 	setCursor(Qt::CrossCursor);
Chris@127: 	break;
Chris@127: /*	
Chris@127:     case ViewManager::TextMode:
Chris@127: 	setCursor(Qt::IBeamCursor);
Chris@127: 	break;
Chris@127: */
Chris@127:     }
Chris@127: }
Chris@127: 
Chris@133: void
Chris@133: Pane::zoomWheelsEnabledChanged()
Chris@133: {
Chris@133:     updateHeadsUpDisplay();
Chris@133:     update();
Chris@133: }
Chris@133: 
Chris@133: void
Chris@133: Pane::zoomLevelChanged()
Chris@133: {
Chris@192:     std::cerr << "Pane[" << this << "]::zoomLevelChanged (global now "
Chris@192:               << (m_manager ? m_manager->getGlobalZoom() : 0) << ")" << std::endl;
Chris@192: 
Chris@133:     if (m_manager && m_manager->getZoomWheelsEnabled()) {
Chris@133:         updateHeadsUpDisplay();
Chris@133:     }
Chris@133: }
Chris@133: 
Chris@133: void
Chris@133: Pane::propertyContainerSelected(View *v, PropertyContainer *pc)
Chris@133: {
Chris@133:     Layer *layer = 0;
Chris@133: 
Chris@133:     if (getLayerCount() > 0) {
Chris@133:         layer = getLayer(getLayerCount() - 1);
Chris@133:         disconnect(layer, SIGNAL(verticalZoomChanged()),
Chris@133:                    this, SLOT(verticalZoomChanged()));
Chris@133:     }
Chris@133: 
Chris@133:     View::propertyContainerSelected(v, pc);
Chris@133:     updateHeadsUpDisplay();
Chris@133: 
Chris@187:     if (m_vthumb) {
Chris@187:         RangeMapper *rm = 0;
Chris@187:         if (layer) rm = layer->getNewVerticalZoomRangeMapper();
Chris@187:         if (rm) m_vthumb->setRangeMapper(rm);
Chris@187:     }
Chris@187: 
Chris@133:     if (getLayerCount() > 0) {
Chris@133:         layer = getLayer(getLayerCount() - 1);
Chris@133:         connect(layer, SIGNAL(verticalZoomChanged()),
Chris@133:                 this, SLOT(verticalZoomChanged()));
Chris@133:     }
Chris@133: }
Chris@133: 
Chris@133: void
Chris@133: Pane::verticalZoomChanged()
Chris@133: {
Chris@133:     Layer *layer = 0;
Chris@133: 
Chris@133:     if (getLayerCount() > 0) {
Chris@133: 
Chris@133:         layer = getLayer(getLayerCount() - 1);
Chris@133: 
Chris@133:         if (m_vthumb && m_vthumb->isVisible()) {
Chris@133:             m_vthumb->setValue(layer->getCurrentVerticalZoomStep());
Chris@133:         }
Chris@133:     }
Chris@133: }
Chris@133: 
Chris@189: void
Chris@189: Pane::updateContextHelp(const QPoint *pos)
Chris@189: {
Chris@189:     QString help = "";
Chris@189: 
Chris@189:     if (m_clickedInRange) {
Chris@189:         emit contextHelpChanged("");
Chris@189:         return;
Chris@189:     }
Chris@189: 
Chris@189:     ViewManager::ToolMode mode = ViewManager::NavigateMode;
Chris@189:     if (m_manager) mode = m_manager->getToolMode();
Chris@189: 
Chris@189:     bool editable = false;
Chris@189:     Layer *layer = getSelectedLayer();
Chris@189:     if (layer && layer->isLayerEditable()) {
Chris@189:         editable = true;
Chris@189:     }
Chris@189:         
Chris@189:     if (mode == ViewManager::NavigateMode) {
Chris@189: 
Chris@189:         help = tr("Click and drag to navigate");
Chris@189:         
Chris@189:     } else if (mode == ViewManager::SelectMode) {
Chris@189: 
Chris@189:         bool haveSelection = (m_manager && !m_manager->getSelections().empty());
Chris@189: 
Chris@189:         if (haveSelection) {
Chris@189:             if (editable) {
Chris@189:                 help = tr("Click and drag to select a range; hold Shift to avoid snapping to items; hold Ctrl for multi-select; middle-click and drag to navigate");
Chris@189:             } else {
Chris@189:                 help = tr("Click and drag to select a range; hold Ctrl for multi-select; middle-click and drag to navigate");
Chris@189:             }                
Chris@189: 
Chris@189:             if (pos) {
Chris@189:                 bool closeToLeft = false, closeToRight = false;
Chris@189:                 Selection selection = getSelectionAt(pos->x(), closeToLeft, closeToRight);
Chris@189:                 if ((closeToLeft || closeToRight) && !(closeToLeft && closeToRight)) {
Chris@189:                     
Chris@189:                     help = tr("Click and drag to move the selection boundary");
Chris@189:                 }
Chris@189:             }
Chris@189:         } else {
Chris@189:             if (editable) {
Chris@189:                 help = tr("Click and drag to select a range; hold Shift to avoid snapping to items; middle-click to navigate");
Chris@189:             } else {
Chris@189:                 help = tr("Click and drag to select a range; middle-click and drag to navigate");
Chris@189:             }
Chris@189:         }
Chris@189: 
Chris@189:     } else if (mode == ViewManager::DrawMode) {
Chris@189:         
Chris@189:         //!!! could call through to a layer function to find out exact meaning
Chris@189: 	if (editable) {
Chris@189:             help = tr("Click to add a new item in the active layer");
Chris@189:         }
Chris@189:         
Chris@189:     } else if (mode == ViewManager::EditMode) {
Chris@189:         
Chris@189:         //!!! could call through to layer
Chris@189: 	if (editable) {
Chris@189:             help = tr("Click and drag an item in the active layer to move it");
Chris@189:             if (pos) {
Chris@189:                 bool closeToLeft = false, closeToRight = false;
Chris@189:                 Selection selection = getSelectionAt(pos->x(), closeToLeft, closeToRight);
Chris@189:                 if (!selection.isEmpty()) {
Chris@189:                     help = tr("Click and drag to move all items in the selected range");
Chris@189:                 }
Chris@189:             }
Chris@189:         }
Chris@189:     }
Chris@189: 
Chris@189:     emit contextHelpChanged(help);
Chris@189: }
Chris@189: 
Chris@189: void
Chris@189: Pane::mouseEnteredWidget()
Chris@189: {
Chris@189:     QWidget *w = dynamic_cast<QWidget *>(sender());
Chris@189:     if (!w) return;
Chris@189: 
Chris@189:     if (w == m_vpan) {
Chris@189:         emit contextHelpChanged(tr("Click and drag to adjust the visible range of the vertical scale"));
Chris@189:     } else if (w == m_vthumb) {
Chris@189:         emit contextHelpChanged(tr("Click and drag to adjust the vertical zoom level"));
Chris@189:     } else if (w == m_hthumb) {
Chris@189:         emit contextHelpChanged(tr("Click and drag to adjust the horizontal zoom level"));
Chris@189:     } else if (w == m_reset) {
Chris@189:         emit contextHelpChanged(tr("Reset horizontal and vertical zoom levels to their defaults"));
Chris@189:     }
Chris@189: }
Chris@189: 
Chris@189: void
Chris@189: Pane::mouseLeftWidget()
Chris@189: {
Chris@189:     emit contextHelpChanged("");
Chris@189: }
Chris@189: 
Chris@127: QString
Chris@127: Pane::toXmlString(QString indent, QString extraAttributes) const
Chris@127: {
Chris@127:     return View::toXmlString
Chris@127: 	(indent,
Chris@127: 	 QString("type=\"pane\" centreLineVisible=\"%1\" height=\"%2\" %3")
Chris@127: 	 .arg(m_centreLineVisible).arg(height()).arg(extraAttributes));
Chris@127: }
Chris@127: 
Chris@127: 
Chris@127: #ifdef INCLUDE_MOCFILES
Chris@127: #include "Pane.moc.cpp"
Chris@127: #endif
Chris@127: