Chris@58: /* -*- c-basic-offset: 4 indent-tabs-mode: nil -*-  vi:set ts=8 sts=4 sw=4: */
Chris@0: 
Chris@0: /*
Chris@59:     Sonic Visualiser
Chris@59:     An audio file viewer and annotation editor.
Chris@59:     Centre for Digital Music, Queen Mary, University of London.
Chris@59:     This file copyright 2006 Chris Cannam.
Chris@0:     
Chris@59:     This program is free software; you can redistribute it and/or
Chris@59:     modify it under the terms of the GNU General Public License as
Chris@59:     published by the Free Software Foundation; either version 2 of the
Chris@59:     License, or (at your option) any later version.  See the file
Chris@59:     COPYING included with this distribution for more information.
Chris@0: */
Chris@0: 
Chris@0: #include "widgets/Pane.h"
Chris@0: #include "base/Layer.h"
Chris@0: #include "base/Model.h"
Chris@0: #include "base/ZoomConstraint.h"
Chris@0: #include "base/RealTime.h"
Chris@0: #include "base/Profiler.h"
Chris@13: #include "base/ViewManager.h"
Chris@99: #include "base/CommandHistory.h"
Chris@41: #include "layer/WaveformLayer.h"
Chris@0: 
Chris@0: #include <QPaintEvent>
Chris@0: #include <QPainter>
Chris@0: #include <iostream>
Chris@0: #include <cmath>
Chris@0: 
Chris@0: using std::cerr;
Chris@0: using std::endl;
Chris@0: 
Chris@0: Pane::Pane(QWidget *w) :
Chris@0:     View(w, true),
Chris@0:     m_identifyFeatures(false),
Chris@0:     m_clickedInRange(false),
Chris@0:     m_shiftPressed(false),
Chris@13:     m_ctrlPressed(false),
Chris@17:     m_navigating(false),
Chris@17:     m_resizing(false),
Chris@0:     m_centreLineVisible(true)
Chris@0: {
Chris@0:     setObjectName("Pane");
Chris@0:     setMouseTracking(true);
Chris@0: }
Chris@0: 
Chris@0: bool
Chris@44: Pane::shouldIlluminateLocalFeatures(const Layer *layer, QPoint &pos) const
Chris@0: {
Chris@42:     QPoint discard;
Chris@42:     bool b0, b1;
Chris@42: 
Chris@42:     if (layer == getSelectedLayer() &&
Chris@42: 	!shouldIlluminateLocalSelection(discard, b0, b1)) {
Chris@42: 
Chris@27: 	pos = m_identifyPoint;
Chris@27: 	return m_identifyFeatures;
Chris@27:     }
Chris@0: 
Chris@0:     return false;
Chris@0: }
Chris@0: 
Chris@42: bool
Chris@42: Pane::shouldIlluminateLocalSelection(QPoint &pos,
Chris@42: 				     bool &closeToLeft,
Chris@44: 				     bool &closeToRight) const
Chris@42: {
Chris@42:     if (m_identifyFeatures &&
Chris@42: 	m_manager &&
Chris@42: 	m_manager->getToolMode() == ViewManager::EditMode &&
Chris@42: 	!m_manager->getSelections().empty() &&
Chris@42: 	!selectionIsBeingEdited()) {
Chris@42: 
Chris@42: 	Selection s(getSelectionAt(m_identifyPoint.x(),
Chris@42: 				   closeToLeft, closeToRight));
Chris@42: 
Chris@42: 	if (!s.isEmpty()) {
Chris@42: 	    if (getSelectedLayer() && getSelectedLayer()->isLayerEditable()) {
Chris@42: 		
Chris@42: 		pos = m_identifyPoint;
Chris@42: 		return true;
Chris@42: 	    }
Chris@42: 	}
Chris@42:     }
Chris@42: 
Chris@42:     return false;
Chris@42: }
Chris@42: 
Chris@42: bool
Chris@42: Pane::selectionIsBeingEdited() const
Chris@42: {
Chris@42:     if (!m_editingSelection.isEmpty()) {
Chris@42: 	if (m_mousePos != m_clickPos &&
Chris@42: 	    getFrameForX(m_mousePos.x()) != getFrameForX(m_clickPos.x())) {
Chris@42: 	    return true;
Chris@42: 	}
Chris@42:     }
Chris@42:     return false;
Chris@42: }
Chris@42: 
Chris@0: void
Chris@0: Pane::setCentreLineVisible(bool visible)
Chris@0: {
Chris@0:     m_centreLineVisible = visible;
Chris@0:     update();
Chris@0: }
Chris@0: 
Chris@0: void
Chris@0: Pane::paintEvent(QPaintEvent *e)
Chris@0: {
Chris@0:     QPainter paint;
Chris@0: 
Chris@0:     QRect r(rect());
Chris@0: 
Chris@0:     if (e) {
Chris@0: 	r = e->rect();
Chris@0:     }
Chris@0: /*
Chris@0:     paint.begin(this);
Chris@0:     paint.setClipRect(r);
Chris@0: 
Chris@0:     if (hasLightBackground()) {
Chris@0: 	paint.setPen(Qt::white);
Chris@0: 	paint.setBrush(Qt::white);
Chris@0:     } else {
Chris@0: 	paint.setPen(Qt::black);
Chris@0: 	paint.setBrush(Qt::black);
Chris@0:     }
Chris@0:     paint.drawRect(r);
Chris@0: 
Chris@0:     paint.end();
Chris@0: */
Chris@0:     View::paintEvent(e);
Chris@0: 
Chris@0:     paint.begin(this);
Chris@0: 
Chris@0:     if (e) {
Chris@0: 	paint.setClipRect(r);
Chris@0:     }
Chris@41: 
Chris@41:     const Model *waveformModel = 0; // just for reporting purposes
Chris@51:     int verticalScaleWidth = 0;
Chris@41:     
Chris@55:     int fontHeight = paint.fontMetrics().height();
Chris@55:     int fontAscent = paint.fontMetrics().ascent();
Chris@55: 
Chris@99:     if (m_manager &&
Chris@99:         !m_manager->isPlaying() &&
Chris@99:         m_manager->getToolMode() == ViewManager::SelectMode) {
Chris@0: 
Chris@99:         for (LayerList::iterator vi = m_layers.end(); vi != m_layers.begin(); ) {
Chris@99:             --vi;
Chris@41: 
Chris@77:             std::vector<QRect> crosshairExtents;
Chris@77: 
Chris@77:             if ((*vi)->getCrosshairExtents(this, paint, m_identifyPoint,
Chris@77:                                            crosshairExtents)) {
Chris@77:                 (*vi)->paintCrosshairs(this, paint, m_identifyPoint);
Chris@99:                 break;
Chris@99:             } else if ((*vi)->isLayerOpaque()) {
Chris@99:                 break;
Chris@70:             }
Chris@77:         }
Chris@99:     }
Chris@99: 
Chris@99:     for (LayerList::iterator vi = m_layers.end(); vi != m_layers.begin(); ) {
Chris@99:         --vi;
Chris@99:             
Chris@99:         if (dynamic_cast<WaveformLayer *>(*vi)) {
Chris@99:             waveformModel = (*vi)->getModel();
Chris@99:         }
Chris@0: 
Chris@77:         if (!m_manager ||
Chris@77:             m_manager->getOverlayMode() == ViewManager::NoOverlays) {
Chris@77:             break;
Chris@77:         }
Chris@70: 
Chris@77:         verticalScaleWidth = (*vi)->getVerticalScaleWidth(this, paint);
Chris@77: 
Chris@77:         if (verticalScaleWidth > 0 && r.left() < verticalScaleWidth) {
Chris@0: 
Chris@0: //	    Profiler profiler("Pane::paintEvent - painting vertical scale", true);
Chris@0: 
Chris@0: //	    std::cerr << "Pane::paintEvent: calling paint.save() in vertical scale block" << std::endl;
Chris@77:             paint.save();
Chris@77:             
Chris@77:             paint.setPen(Qt::black);
Chris@77:             paint.setBrush(Qt::white);
Chris@77:             paint.drawRect(0, -1, verticalScaleWidth, height()+1);
Chris@77:             
Chris@77:             paint.setBrush(Qt::NoBrush);
Chris@77:             (*vi)->paintVerticalScale
Chris@77:                 (this, paint, QRect(0, 0, verticalScaleWidth, height()));
Chris@77:             
Chris@77:             paint.restore();
Chris@77:         }
Chris@77: 	
Chris@77:         if (m_identifyFeatures) {
Chris@77:             
Chris@77:             QPoint pos = m_identifyPoint;
Chris@77:             QString desc = (*vi)->getFeatureDescription(this, pos);
Chris@77: 	    
Chris@77:             if (desc != "") {
Chris@77:                 
Chris@70:                 paint.save();
Chris@77:                 
Chris@77:                 int tabStop =
Chris@77:                     paint.fontMetrics().width(tr("Some lengthy prefix:"));
Chris@77:                 
Chris@77:                 QRect boundingRect = 
Chris@77:                     paint.fontMetrics().boundingRect
Chris@77:                     (rect(),
Chris@77:                      Qt::AlignRight | Qt::AlignTop | Qt::TextExpandTabs,
Chris@77:                      desc, tabStop);
Chris@0: 
Chris@77:                 if (hasLightBackground()) {
Chris@77:                     paint.setPen(Qt::NoPen);
Chris@77:                     paint.setBrush(QColor(250, 250, 250, 200));
Chris@77:                 } else {
Chris@77:                     paint.setPen(Qt::NoPen);
Chris@77:                     paint.setBrush(QColor(50, 50, 50, 200));
Chris@77:                 }
Chris@0: 
Chris@77:                 int extra = paint.fontMetrics().descent();
Chris@77:                 paint.drawRect(width() - boundingRect.width() - 10 - extra,
Chris@77:                                10 - extra,
Chris@77:                                boundingRect.width() + 2 * extra,
Chris@77:                                boundingRect.height() + extra);
Chris@77: 
Chris@77:                 if (hasLightBackground()) {
Chris@77:                     paint.setPen(QColor(150, 20, 0));
Chris@77:                 } else {
Chris@77:                     paint.setPen(QColor(255, 150, 100));
Chris@77:                 }
Chris@77: 		
Chris@77:                 QTextOption option;
Chris@77:                 option.setWrapMode(QTextOption::NoWrap);
Chris@77:                 option.setAlignment(Qt::AlignRight | Qt::AlignTop);
Chris@77:                 option.setTabStop(tabStop);
Chris@77:                 paint.drawText(QRectF(width() - boundingRect.width() - 10, 10,
Chris@77:                                       boundingRect.width(),
Chris@77:                                       boundingRect.height()),
Chris@77:                                desc,
Chris@77:                                option);
Chris@0: 
Chris@70:                 paint.restore();
Chris@70:             }
Chris@77:         }
Chris@25: 
Chris@77:         break;
Chris@0:     }
Chris@0:     
Chris@55:     int sampleRate = getModelsSampleRate();
Chris@55:     paint.setBrush(Qt::NoBrush);
Chris@55: 
Chris@0:     if (m_centreLineVisible) {
Chris@0: 
Chris@0: 	if (hasLightBackground()) {
Chris@0: 	    paint.setPen(QColor(50, 50, 50));
Chris@0: 	} else {
Chris@0: 	    paint.setPen(QColor(200, 200, 200));
Chris@0: 	}	
Chris@0: 	paint.drawLine(width() / 2, 0, width() / 2, height() - 1);
Chris@0: 
Chris@55: 	paint.setPen(QColor(50, 50, 50));
Chris@55: 
Chris@55: 	int y = height() - fontHeight
Chris@55: 	    + fontAscent - 6;
Chris@0: 	
Chris@0: 	LayerList::iterator vi = m_layers.end();
Chris@0: 	
Chris@0: 	if (vi != m_layers.begin()) {
Chris@0: 	    
Chris@0: 	    switch ((*--vi)->getPreferredFrameCountPosition()) {
Chris@0: 		
Chris@0: 	    case Layer::PositionTop:
Chris@55: 		y = fontAscent + 6;
Chris@0: 		break;
Chris@0: 		
Chris@0: 	    case Layer::PositionMiddle:
Chris@55: 		y = (height() - fontHeight) / 2
Chris@55: 		    + fontAscent;
Chris@0: 		break;
Chris@0: 
Chris@0: 	    case Layer::PositionBottom:
Chris@0: 		// y already set correctly
Chris@0: 		break;
Chris@0: 	    }
Chris@0: 	}
Chris@0: 
Chris@70:         if (m_manager &&
Chris@70:             m_manager->getOverlayMode() != ViewManager::NoOverlays) {
Chris@0: 
Chris@70:             if (sampleRate) {
Chris@0: 
Chris@70:                 QString text(QString::fromStdString
Chris@70:                              (RealTime::frame2RealTime
Chris@70:                               (m_centreFrame, sampleRate).toText(true)));
Chris@70:                 
Chris@70:                 int tw = paint.fontMetrics().width(text);
Chris@70:                 int x = width()/2 - 4 - tw;
Chris@70:                 
Chris@70:                 drawVisibleText(paint, x, y, text, OutlinedText);
Chris@70:             }
Chris@70:             
Chris@70:             QString text = QString("%1").arg(m_centreFrame);
Chris@70:             
Chris@70:             int tw = paint.fontMetrics().width(text);
Chris@70:             int x = width()/2 + 4;
Chris@70:             
Chris@70:             drawVisibleText(paint, x, y, text, OutlinedText);
Chris@70:         }
Chris@55: 
Chris@55:     } else {
Chris@55: 
Chris@55: 	paint.setPen(QColor(50, 50, 50));
Chris@55:     }
Chris@55: 
Chris@55:     if (waveformModel &&
Chris@70:         m_manager &&
Chris@70:         m_manager->getOverlayMode() != ViewManager::NoOverlays &&
Chris@55: 	r.y() + r.height() >= height() - fontHeight - 6) {
Chris@55: 
Chris@55: 	size_t mainModelRate = m_manager->getMainModelSampleRate();
Chris@55: 	size_t playbackRate = m_manager->getPlaybackSampleRate();
Chris@55: 	    
Chris@55: 	QString srNote = "";
Chris@55: 
Chris@55: 	// Show (R) for waveform models that will be resampled on
Chris@55: 	// playback, and (X) for waveform models that will be played
Chris@55: 	// at the wrong rate because their rate differs from that of
Chris@55: 	// the main model.
Chris@55: 
Chris@55: 	if (sampleRate == mainModelRate) {
Chris@55: 	    if (sampleRate != playbackRate) srNote = " " + tr("(R)");
Chris@0: 	} else {
Chris@55: 	    std::cerr << "Sample rate = " << sampleRate << ", main model rate = " << mainModelRate << std::endl;
Chris@55: 	    srNote = " " + tr("(X)");
Chris@0: 	}
Chris@41: 
Chris@55: 	QString desc = tr("%1 / %2Hz%3")
Chris@55: 	    .arg(RealTime::frame2RealTime(waveformModel->getEndFrame(),
Chris@55: 					  sampleRate)
Chris@55: 		 .toText(false).c_str())
Chris@55: 	    .arg(sampleRate)
Chris@55: 	    .arg(srNote);
Chris@49: 
Chris@55: 	if (r.x() < verticalScaleWidth + 5 + paint.fontMetrics().width(desc)) {
Chris@55: 	    drawVisibleText(paint, verticalScaleWidth + 5,
Chris@55: 			    height() - fontHeight + fontAscent - 6,
Chris@55: 			    desc, OutlinedText);
Chris@55: 	}
Chris@55:     }
Chris@50: 
Chris@70:     if (m_manager &&
Chris@70:         m_manager->getOverlayMode() == ViewManager::AllOverlays &&
Chris@70:         r.y() + r.height() >= height() - m_layers.size() * fontHeight - 6) {
Chris@51: 
Chris@51: 	std::vector<QString> texts;
Chris@51: 	int maxTextWidth = 0;
Chris@51: 
Chris@51: 	for (LayerList::iterator i = m_layers.begin(); i != m_layers.end(); ++i) {
Chris@51: 
Chris@56: 	    QString text = (*i)->getLayerPresentationName();
Chris@51: 	    int tw = paint.fontMetrics().width(text);
Chris@61:             bool reduced = false;
Chris@61:             while (tw > width() / 3 && text.length() > 4) {
Chris@61:                 if (!reduced && text.length() > 8) {
Chris@61:                     text = text.left(text.length() - 4);
Chris@61:                 } else {
Chris@61:                     text = text.left(text.length() - 2);
Chris@61:                 }
Chris@61:                 reduced = true;
Chris@61:                 tw = paint.fontMetrics().width(text + "...");
Chris@61:             }
Chris@61:             if (reduced) {
Chris@61:                 texts.push_back(text + "...");
Chris@61:             } else {
Chris@61:                 texts.push_back(text);
Chris@61:             }
Chris@51: 	    if (tw > maxTextWidth) maxTextWidth = tw;
Chris@51: 	}
Chris@55:     
Chris@51: 	int lly = height() - 6;
Chris@51: 
Chris@55: 	if (r.x() + r.width() >= width() - maxTextWidth - 5) {
Chris@55: 	    
Chris@55: 	    for (int i = 0; i < texts.size(); ++i) {
Chris@51: 
Chris@55: 		if (i == texts.size() - 1) {
Chris@51: 		    paint.setPen(Qt::black);
Chris@51: 		}
Chris@55: 		
Chris@55: 		drawVisibleText(paint, width() - maxTextWidth - 5,
Chris@55: 				lly - fontHeight + fontAscent,
Chris@55: 				texts[i], OutlinedText);
Chris@55: 		
Chris@55: 		lly -= fontHeight;
Chris@51: 	    }
Chris@51: 	}
Chris@0:     }
Chris@0: 
Chris@0:     if (m_clickedInRange && m_shiftPressed) {
Chris@19: 	if (m_manager && (m_manager->getToolMode() == ViewManager::NavigateMode)) {
Chris@19: 	    //!!! be nice if this looked a bit more in keeping with the
Chris@19: 	    //selection block
Chris@19: 	    paint.setPen(Qt::blue);
Chris@19: 	    paint.drawRect(m_clickPos.x(), m_clickPos.y(),
Chris@19: 			   m_mousePos.x() - m_clickPos.x(),
Chris@19: 			   m_mousePos.y() - m_clickPos.y());
Chris@19: 	}
Chris@0:     }
Chris@0:     
Chris@42:     if (selectionIsBeingEdited()) {
Chris@42: 
Chris@42: 	int offset = m_mousePos.x() - m_clickPos.x();
Chris@42: 	int p0 = getXForFrame(m_editingSelection.getStartFrame()) + offset;
Chris@42: 	int p1 = getXForFrame(m_editingSelection.getEndFrame()) + offset;
Chris@42: 
Chris@42: 	if (m_editingSelectionEdge < 0) {
Chris@42: 	    p1 = getXForFrame(m_editingSelection.getEndFrame());
Chris@42: 	} else if (m_editingSelectionEdge > 0) {
Chris@42: 	    p0 = getXForFrame(m_editingSelection.getStartFrame());
Chris@42: 	}
Chris@42: 
Chris@42: 	paint.save();
Chris@42: 	if (hasLightBackground()) {
Chris@42: 	    paint.setPen(QPen(Qt::black, 2));
Chris@42: 	} else {
Chris@42: 	    paint.setPen(QPen(Qt::white, 2));
Chris@42: 	}
Chris@42: 
Chris@42: 	//!!! duplicating display policy with View::drawSelections
Chris@42: 
Chris@42: 	if (m_editingSelectionEdge < 0) {
Chris@42: 	    paint.drawLine(p0, 1, p1, 1);
Chris@42: 	    paint.drawLine(p0, 0, p0, height());
Chris@42: 	    paint.drawLine(p0, height() - 1, p1, height() - 1);
Chris@42: 	} else if (m_editingSelectionEdge > 0) {
Chris@42: 	    paint.drawLine(p0, 1, p1, 1);
Chris@42: 	    paint.drawLine(p1, 0, p1, height());
Chris@42: 	    paint.drawLine(p0, height() - 1, p1, height() - 1);
Chris@42: 	} else {
Chris@42: 	    paint.setBrush(Qt::NoBrush);
Chris@42: 	    paint.drawRect(p0, 1, p1 - p0, height() - 2);
Chris@42: 	}
Chris@42: 	paint.restore();
Chris@42:     }
Chris@42: 
Chris@0:     paint.end();
Chris@0: }
Chris@0: 
Chris@17: Selection
Chris@44: Pane::getSelectionAt(int x, bool &closeToLeftEdge, bool &closeToRightEdge) const
Chris@17: {
Chris@17:     closeToLeftEdge = closeToRightEdge = false;
Chris@17: 
Chris@17:     if (!m_manager) return Selection();
Chris@17: 
Chris@20:     long testFrame = getFrameForX(x - 5);
Chris@17:     if (testFrame < 0) {
Chris@20: 	testFrame = getFrameForX(x);
Chris@17: 	if (testFrame < 0) return Selection();
Chris@17:     }
Chris@17: 
Chris@17:     Selection selection = m_manager->getContainingSelection(testFrame, true);
Chris@17:     if (selection.isEmpty()) return selection;
Chris@17: 
Chris@20:     int lx = getXForFrame(selection.getStartFrame());
Chris@20:     int rx = getXForFrame(selection.getEndFrame());
Chris@17:     
Chris@17:     int fuzz = 2;
Chris@17:     if (x < lx - fuzz || x > rx + fuzz) return Selection();
Chris@17: 
Chris@17:     int width = rx - lx;
Chris@17:     fuzz = 3;
Chris@17:     if (width < 12) fuzz = width / 4;
Chris@17:     if (fuzz < 1) fuzz = 1;
Chris@17: 
Chris@17:     if (x < lx + fuzz) closeToLeftEdge = true;
Chris@17:     if (x > rx - fuzz) closeToRightEdge = true;
Chris@17: 
Chris@17:     return selection;
Chris@17: }
Chris@17: 
Chris@0: void
Chris@0: Pane::mousePressEvent(QMouseEvent *e)
Chris@0: {
Chris@89:     if (e->buttons() & Qt::RightButton) {
Chris@89:         emit rightButtonMenuRequested(mapToGlobal(e->pos()));
Chris@89:         return;
Chris@89:     }
Chris@89: 
Chris@0:     m_clickPos = e->pos();
Chris@0:     m_clickedInRange = true;
Chris@42:     m_editingSelection = Selection();
Chris@42:     m_editingSelectionEdge = 0;
Chris@0:     m_shiftPressed = (e->modifiers() & Qt::ShiftModifier);
Chris@13:     m_ctrlPressed = (e->modifiers() & Qt::ControlModifier);
Chris@13: 
Chris@13:     ViewManager::ToolMode mode = ViewManager::NavigateMode;
Chris@13:     if (m_manager) mode = m_manager->getToolMode();
Chris@13: 
Chris@17:     m_navigating = false;
Chris@13: 
Chris@17:     if (mode == ViewManager::NavigateMode || (e->buttons() & Qt::MidButton)) {
Chris@17: 
Chris@17: 	if (mode != ViewManager::NavigateMode) {
Chris@17: 	    setCursor(Qt::PointingHandCursor);
Chris@17: 	}
Chris@17: 
Chris@17: 	m_navigating = true;
Chris@13: 	m_dragCentreFrame = m_centreFrame;
Chris@13: 
Chris@13:     } else if (mode == ViewManager::SelectMode) {
Chris@13: 
Chris@17: 	bool closeToLeft = false, closeToRight = false;
Chris@17: 	Selection selection = getSelectionAt(e->x(), closeToLeft, closeToRight);
Chris@17: 
Chris@17: 	if ((closeToLeft || closeToRight) && !(closeToLeft && closeToRight)) {
Chris@17: 
Chris@17: 	    m_manager->removeSelection(selection);
Chris@17: 
Chris@17: 	    if (closeToLeft) {
Chris@17: 		m_selectionStartFrame = selection.getEndFrame();
Chris@17: 	    } else {
Chris@17: 		m_selectionStartFrame = selection.getStartFrame();
Chris@17: 	    }
Chris@17: 
Chris@17: 	    m_manager->setInProgressSelection(selection, false);
Chris@17: 	    m_resizing = true;
Chris@13: 	
Chris@17: 	} else {
Chris@17: 
Chris@20: 	    int mouseFrame = getFrameForX(e->x());
Chris@17: 	    size_t resolution = 1;
Chris@17: 	    int snapFrame = mouseFrame;
Chris@17: 	
Chris@17: 	    Layer *layer = getSelectedLayer();
Chris@82: 	    if (layer && !m_shiftPressed) {
Chris@44: 		layer->snapToFeatureFrame(this, snapFrame,
Chris@44: 					  resolution, Layer::SnapLeft);
Chris@17: 	    }
Chris@17: 	    
Chris@17: 	    if (snapFrame < 0) snapFrame = 0;
Chris@17: 	    m_selectionStartFrame = snapFrame;
Chris@17: 	    if (m_manager) {
Chris@17: 		m_manager->setInProgressSelection(Selection(snapFrame,
Chris@17: 							    snapFrame + resolution),
Chris@17: 						  !m_ctrlPressed);
Chris@17: 	    }
Chris@17: 
Chris@17: 	    m_resizing = false;
Chris@17: 	}
Chris@17: 
Chris@17: 	update();
Chris@17: 
Chris@17:     } else if (mode == ViewManager::DrawMode) {
Chris@17: 
Chris@13: 	Layer *layer = getSelectedLayer();
Chris@23: 	if (layer && layer->isLayerEditable()) {
Chris@44: 	    layer->drawStart(this, e);
Chris@13: 	}
Chris@18: 
Chris@18:     } else if (mode == ViewManager::EditMode) {
Chris@18: 
Chris@42: 	if (!editSelectionStart(e)) {
Chris@42: 	    Layer *layer = getSelectedLayer();
Chris@42: 	    if (layer && layer->isLayerEditable()) {
Chris@44: 		layer->editStart(this, e);
Chris@42: 	    }
Chris@18: 	}
Chris@13:     }
Chris@0: 
Chris@0:     emit paneInteractedWith();
Chris@0: }
Chris@0: 
Chris@0: void
Chris@0: Pane::mouseReleaseEvent(QMouseEvent *e)
Chris@0: {
Chris@89:     if (e->buttons() & Qt::RightButton) {
Chris@89:         return;
Chris@89:     }
Chris@89: 
Chris@13:     ViewManager::ToolMode mode = ViewManager::NavigateMode;
Chris@13:     if (m_manager) mode = m_manager->getToolMode();
Chris@13: 
Chris@0:     if (m_clickedInRange) {
Chris@0: 	mouseMoveEvent(e);
Chris@0:     }
Chris@0: 
Chris@17:     if (m_navigating || mode == ViewManager::NavigateMode) {
Chris@17: 
Chris@17: 	m_navigating = false;
Chris@17: 
Chris@17: 	if (mode != ViewManager::NavigateMode) {
Chris@17: 	    // restore cursor
Chris@17: 	    toolModeChanged();
Chris@17: 	}
Chris@0: 
Chris@13: 	if (m_shiftPressed) {
Chris@0: 
Chris@13: 	    int x0 = std::min(m_clickPos.x(), m_mousePos.x());
Chris@13: 	    int x1 = std::max(m_clickPos.x(), m_mousePos.x());
Chris@13: 	    int w = x1 - x0;
Chris@13: 	    
Chris@20: 	    long newStartFrame = getFrameForX(x0);
Chris@13: 	    
Chris@20: 	    long visibleFrames = getEndFrame() - getStartFrame();
Chris@20: 	    if (newStartFrame <= -visibleFrames) {
Chris@20: 		newStartFrame  = -visibleFrames + 1;
Chris@13: 	    }
Chris@13: 	    
Chris@13: 	    if (newStartFrame >= long(getModelsEndFrame())) {
Chris@13: 		newStartFrame  = getModelsEndFrame() - 1;
Chris@13: 	    }
Chris@13: 	    
Chris@13: 	    float ratio = float(w) / float(width());
Chris@13: //	std::cerr << "ratio: " << ratio << std::endl;
Chris@13: 	    size_t newZoomLevel = (size_t)nearbyint(m_zoomLevel * ratio);
Chris@13: 	    if (newZoomLevel < 1) newZoomLevel = 1;
Chris@13: 
Chris@13: //	std::cerr << "start: " << m_startFrame << ", level " << m_zoomLevel << std::endl;
Chris@13: 	    setZoomLevel(getZoomConstraintBlockSize(newZoomLevel));
Chris@13: 	    setStartFrame(newStartFrame);
Chris@13: 
Chris@13: 	    //cerr << "mouseReleaseEvent: start frame now " << m_startFrame << endl;
Chris@13: //	update();
Chris@0: 	}
Chris@0: 
Chris@13:     } else if (mode == ViewManager::SelectMode) {
Chris@13: 
Chris@13: 	if (m_manager && m_manager->haveInProgressSelection()) {
Chris@13: 
Chris@13: 	    bool exclusive;
Chris@13: 	    Selection selection = m_manager->getInProgressSelection(exclusive);
Chris@13: 	    
Chris@13: 	    if (selection.getEndFrame() < selection.getStartFrame() + 2) {
Chris@13: 		selection = Selection();
Chris@13: 	    }
Chris@13: 	    
Chris@13: 	    m_manager->clearInProgressSelection();
Chris@13: 	    
Chris@13: 	    if (exclusive) {
Chris@13: 		m_manager->setSelection(selection);
Chris@13: 	    } else {
Chris@13: 		m_manager->addSelection(selection);
Chris@13: 	    }
Chris@0: 	}
Chris@13: 	
Chris@13: 	update();
Chris@17: 
Chris@17:     } else if (mode == ViewManager::DrawMode) {
Chris@17: 
Chris@17: 	Layer *layer = getSelectedLayer();
Chris@23: 	if (layer && layer->isLayerEditable()) {
Chris@44: 	    layer->drawEnd(this, e);
Chris@17: 	    update();
Chris@17: 	}
Chris@18: 
Chris@18:     } else if (mode == ViewManager::EditMode) {
Chris@18: 
Chris@42: 	if (!editSelectionEnd(e)) {
Chris@42: 	    Layer *layer = getSelectedLayer();
Chris@42: 	    if (layer && layer->isLayerEditable()) {
Chris@44: 		layer->editEnd(this, e);
Chris@42: 		update();
Chris@42: 	    }
Chris@18: 	}
Chris@17:     }
Chris@0: 
Chris@0:     m_clickedInRange = false;
Chris@0: 
Chris@0:     emit paneInteractedWith();
Chris@0: }
Chris@0: 
Chris@0: void
Chris@0: Pane::mouseMoveEvent(QMouseEvent *e)
Chris@0: {
Chris@89:     if (e->buttons() & Qt::RightButton) {
Chris@89:         return;
Chris@89:     }
Chris@89: 
Chris@13:     ViewManager::ToolMode mode = ViewManager::NavigateMode;
Chris@13:     if (m_manager) mode = m_manager->getToolMode();
Chris@13: 
Chris@28:     QPoint prevPoint = m_identifyPoint;
Chris@28:     m_identifyPoint = e->pos();
Chris@28: 
Chris@0:     if (!m_clickedInRange) {
Chris@0: 	
Chris@17: 	if (mode == ViewManager::SelectMode) {
Chris@17: 	    bool closeToLeft = false, closeToRight = false;
Chris@17: 	    getSelectionAt(e->x(), closeToLeft, closeToRight);
Chris@17: 	    if ((closeToLeft || closeToRight) && !(closeToLeft && closeToRight)) {
Chris@17: 		setCursor(Qt::SizeHorCursor);
Chris@17: 	    } else {
Chris@17: 		setCursor(Qt::ArrowCursor);
Chris@17: 	    }
Chris@17: 	}
Chris@0: 
Chris@35: //!!!	if (mode != ViewManager::DrawMode) {
Chris@0: 
Chris@67:         if (!m_manager->isPlaying()) {
Chris@67: 
Chris@55: 	if (getSelectedLayer()) {
Chris@55: 
Chris@17: 	    bool previouslyIdentifying = m_identifyFeatures;
Chris@17: 	    m_identifyFeatures = true;
Chris@17: 	    
Chris@17: 	    if (m_identifyFeatures != previouslyIdentifying ||
Chris@17: 		m_identifyPoint != prevPoint) {
Chris@17: 		update();
Chris@17: 	    }
Chris@55: 	}
Chris@55: 
Chris@67:         }
Chris@67: 
Chris@35: //	}
Chris@0: 
Chris@13: 	return;
Chris@13:     }
Chris@0: 
Chris@17:     if (m_navigating || mode == ViewManager::NavigateMode) {
Chris@0: 
Chris@13: 	if (m_shiftPressed) {
Chris@0: 
Chris@13: 	    m_mousePos = e->pos();
Chris@13: 	    update();
Chris@0: 
Chris@0: 	} else {
Chris@13: 
Chris@20: 	    long frameOff = getFrameForX(e->x()) - getFrameForX(m_clickPos.x());
Chris@20: 
Chris@13: 	    size_t newCentreFrame = m_dragCentreFrame;
Chris@13: 	    
Chris@13: 	    if (frameOff < 0) {
Chris@13: 		newCentreFrame -= frameOff;
Chris@13: 	    } else if (newCentreFrame >= size_t(frameOff)) {
Chris@13: 		newCentreFrame -= frameOff;
Chris@13: 	    } else {
Chris@13: 		newCentreFrame = 0;
Chris@13: 	    }
Chris@13: 	    
Chris@13: 	    if (newCentreFrame >= getModelsEndFrame()) {
Chris@13: 		newCentreFrame = getModelsEndFrame();
Chris@13: 		if (newCentreFrame > 0) --newCentreFrame;
Chris@13: 	    }
Chris@20: 
Chris@20: 	    if (getXForFrame(m_centreFrame) != getXForFrame(newCentreFrame)) {
Chris@13: 		setCentreFrame(newCentreFrame);
Chris@13: 	    }
Chris@0: 	}
Chris@0: 
Chris@13:     } else if (mode == ViewManager::SelectMode) {
Chris@13: 
Chris@20: 	int mouseFrame = getFrameForX(e->x());
Chris@13: 	size_t resolution = 1;
Chris@13: 	int snapFrameLeft = mouseFrame;
Chris@13: 	int snapFrameRight = mouseFrame;
Chris@13: 	
Chris@13: 	Layer *layer = getSelectedLayer();
Chris@82: 	if (layer && !m_shiftPressed) {
Chris@44: 	    layer->snapToFeatureFrame(this, snapFrameLeft,
Chris@44: 				      resolution, Layer::SnapLeft);
Chris@44: 	    layer->snapToFeatureFrame(this, snapFrameRight,
Chris@44: 				      resolution, Layer::SnapRight);
Chris@13: 	}
Chris@13: 	
Chris@37: //	std::cerr << "snap: frame = " << mouseFrame << ", start frame = " << m_selectionStartFrame << ", left = " << snapFrameLeft << ", right = " << snapFrameRight << std::endl;
Chris@28: 
Chris@13: 	if (snapFrameLeft < 0) snapFrameLeft = 0;
Chris@13: 	if (snapFrameRight < 0) snapFrameRight = 0;
Chris@13: 	
Chris@13: 	size_t min, max;
Chris@13: 	
Chris@13: 	if (m_selectionStartFrame > snapFrameLeft) {
Chris@13: 	    min = snapFrameLeft;
Chris@13: 	    max = m_selectionStartFrame;
Chris@13: 	} else if (snapFrameRight > m_selectionStartFrame) {
Chris@13: 	    min = m_selectionStartFrame;
Chris@13: 	    max = snapFrameRight;
Chris@13: 	} else {
Chris@13: 	    min = snapFrameLeft;
Chris@13: 	    max = snapFrameRight;
Chris@0: 	}
Chris@0: 
Chris@13: 	if (m_manager) {
Chris@13: 	    m_manager->setInProgressSelection(Selection(min, max),
Chris@17: 					      !m_resizing && !m_ctrlPressed);
Chris@0: 	}
Chris@15: 
Chris@15: 	bool doScroll = false;
Chris@15: 	if (!m_manager) doScroll = true;
Chris@15: 	if (!m_manager->isPlaying()) doScroll = true;
Chris@15: 	if (m_followPlay != PlaybackScrollContinuous) doScroll = true;
Chris@15: 
Chris@15: 	if (doScroll) {
Chris@13: 	    int offset = mouseFrame - getStartFrame();
Chris@13: 	    int available = getEndFrame() - getStartFrame();
Chris@15: 	    if (offset >= available * 0.95) {
Chris@15: 		int move = int(offset - available * 0.95) + 1;
Chris@14: 		setCentreFrame(m_centreFrame + move);
Chris@15: 	    } else if (offset <= available * 0.10) {
Chris@15: 		int move = int(available * 0.10 - offset) + 1;
Chris@14: 		if (m_centreFrame > move) {
Chris@14: 		    setCentreFrame(m_centreFrame - move);
Chris@14: 		} else {
Chris@14: 		    setCentreFrame(0);
Chris@14: 		}
Chris@13: 	    }
Chris@13: 	}
Chris@13: 
Chris@13: 	update();
Chris@17: 
Chris@17:     } else if (mode == ViewManager::DrawMode) {
Chris@17: 
Chris@17: 	Layer *layer = getSelectedLayer();
Chris@23: 	if (layer && layer->isLayerEditable()) {
Chris@44: 	    layer->drawDrag(this, e);
Chris@17: 	}
Chris@18: 
Chris@18:     } else if (mode == ViewManager::EditMode) {
Chris@18: 
Chris@42: 	if (!editSelectionDrag(e)) {
Chris@42: 	    Layer *layer = getSelectedLayer();
Chris@42: 	    if (layer && layer->isLayerEditable()) {
Chris@44: 		layer->editDrag(this, e);
Chris@42: 	    }
Chris@18: 	}
Chris@0:     }
Chris@0: }
Chris@0: 
Chris@0: void
Chris@0: Pane::mouseDoubleClickEvent(QMouseEvent *e)
Chris@0: {
Chris@89:     if (e->buttons() & Qt::RightButton) {
Chris@89:         return;
Chris@89:     }
Chris@89: 
Chris@101: //    std::cerr << "mouseDoubleClickEvent" << std::endl;
Chris@36: 
Chris@36:     m_clickPos = e->pos();
Chris@36:     m_clickedInRange = true;
Chris@36:     m_shiftPressed = (e->modifiers() & Qt::ShiftModifier);
Chris@36:     m_ctrlPressed = (e->modifiers() & Qt::ControlModifier);
Chris@36: 
Chris@36:     ViewManager::ToolMode mode = ViewManager::NavigateMode;
Chris@36:     if (m_manager) mode = m_manager->getToolMode();
Chris@36: 
Chris@101:     if (mode == ViewManager::NavigateMode ||
Chris@101:         mode == ViewManager::EditMode) {
Chris@36: 
Chris@36: 	Layer *layer = getSelectedLayer();
Chris@36: 	if (layer && layer->isLayerEditable()) {
Chris@44: 	    layer->editOpen(this, e);
Chris@36: 	}
Chris@36:     }
Chris@0: }
Chris@0: 
Chris@0: void
Chris@0: Pane::leaveEvent(QEvent *)
Chris@0: {
Chris@0:     bool previouslyIdentifying = m_identifyFeatures;
Chris@0:     m_identifyFeatures = false;
Chris@0:     if (previouslyIdentifying) update();
Chris@0: }
Chris@0: 
Chris@0: void
Chris@0: Pane::wheelEvent(QWheelEvent *e)
Chris@0: {
Chris@0:     //std::cerr << "wheelEvent, delta " << e->delta() << std::endl;
Chris@0: 
Chris@0:     int count = e->delta();
Chris@0: 
Chris@0:     if (count > 0) {
Chris@0: 	if (count >= 120) count /= 120;
Chris@0: 	else count = 1;
Chris@0:     } 
Chris@0: 
Chris@0:     if (count < 0) {
Chris@0: 	if (count <= -120) count /= 120;
Chris@0: 	else count = -1;
Chris@0:     }
Chris@17: 
Chris@17:     if (e->modifiers() & Qt::ControlModifier) {
Chris@17: 
Chris@20: 	// Scroll left or right, rapidly
Chris@20: 
Chris@17: 	if (getStartFrame() < 0 && 
Chris@17: 	    getEndFrame() >= getModelsEndFrame()) return;
Chris@17: 
Chris@17: 	long delta = ((width() / 2) * count * m_zoomLevel);
Chris@17: 
Chris@17: 	if (int(m_centreFrame) < delta) {
Chris@17: 	    setCentreFrame(0);
Chris@17: 	} else if (int(m_centreFrame) - delta >= int(getModelsEndFrame())) {
Chris@17: 	    setCentreFrame(getModelsEndFrame());
Chris@17: 	} else {
Chris@17: 	    setCentreFrame(m_centreFrame - delta);
Chris@17: 	}
Chris@17: 
Chris@17:     } else {
Chris@17: 
Chris@20: 	// Zoom in or out
Chris@20: 
Chris@17: 	int newZoomLevel = m_zoomLevel;
Chris@0:   
Chris@17: 	while (count > 0) {
Chris@17: 	    if (newZoomLevel <= 2) {
Chris@17: 		newZoomLevel = 1;
Chris@17: 		break;
Chris@17: 	    }
Chris@17: 	    newZoomLevel = getZoomConstraintBlockSize(newZoomLevel - 1, 
Chris@17: 						      ZoomConstraint::RoundDown);
Chris@17: 	    --count;
Chris@0: 	}
Chris@17: 	
Chris@17: 	while (count < 0) {
Chris@17: 	    newZoomLevel = getZoomConstraintBlockSize(newZoomLevel + 1,
Chris@17: 						      ZoomConstraint::RoundUp);
Chris@17: 	    ++count;
Chris@17: 	}
Chris@17: 	
Chris@17: 	if (newZoomLevel != m_zoomLevel) {
Chris@17: 	    setZoomLevel(newZoomLevel);
Chris@17: 	}
Chris@0:     }
Chris@0: 
Chris@0:     emit paneInteractedWith();
Chris@0: }
Chris@8: 
Chris@42: bool
Chris@42: Pane::editSelectionStart(QMouseEvent *e)
Chris@42: {
Chris@43:     if (!m_identifyFeatures ||
Chris@43: 	!m_manager ||
Chris@43: 	m_manager->getToolMode() != ViewManager::EditMode) {
Chris@43: 	return false;
Chris@43:     }
Chris@43: 
Chris@42:     bool closeToLeft, closeToRight;
Chris@42:     Selection s(getSelectionAt(e->x(), closeToLeft, closeToRight));
Chris@42:     if (s.isEmpty()) return false;
Chris@42:     m_editingSelection = s;
Chris@42:     m_editingSelectionEdge = (closeToLeft ? -1 : closeToRight ? 1 : 0);
Chris@42:     m_mousePos = e->pos();
Chris@42:     return true;
Chris@42: }
Chris@42: 
Chris@42: bool
Chris@42: Pane::editSelectionDrag(QMouseEvent *e)
Chris@42: {
Chris@42:     if (m_editingSelection.isEmpty()) return false;
Chris@42:     m_mousePos = e->pos();
Chris@42:     update();
Chris@42:     return true;
Chris@42: }
Chris@42: 
Chris@42: bool
Chris@42: Pane::editSelectionEnd(QMouseEvent *e)
Chris@42: {
Chris@42:     if (m_editingSelection.isEmpty()) return false;
Chris@43: 
Chris@43:     int offset = m_mousePos.x() - m_clickPos.x();
Chris@43:     Layer *layer = getSelectedLayer();
Chris@43: 
Chris@43:     if (offset == 0 || !layer) {
Chris@43: 	m_editingSelection = Selection();
Chris@43: 	return true;
Chris@43:     }
Chris@43: 
Chris@43:     int p0 = getXForFrame(m_editingSelection.getStartFrame()) + offset;
Chris@43:     int p1 = getXForFrame(m_editingSelection.getEndFrame()) + offset;
Chris@43: 
Chris@43:     long f0 = getFrameForX(p0);
Chris@43:     long f1 = getFrameForX(p1);
Chris@43: 
Chris@43:     Selection newSelection(f0, f1);
Chris@43:     
Chris@43:     if (m_editingSelectionEdge == 0) {
Chris@43: 	
Chris@99:         CommandHistory::getInstance()->startCompoundOperation
Chris@99:             (tr("Drag Selection"), true);
Chris@99: 
Chris@43: 	layer->moveSelection(m_editingSelection, f0);
Chris@43: 	
Chris@43:     } else {
Chris@43: 	
Chris@99:         CommandHistory::getInstance()->startCompoundOperation
Chris@99:             (tr("Resize Selection"), true);
Chris@99: 
Chris@43: 	if (m_editingSelectionEdge < 0) {
Chris@43: 	    f1 = m_editingSelection.getEndFrame();
Chris@43: 	} else {
Chris@43: 	    f0 = m_editingSelection.getStartFrame();
Chris@43: 	}
Chris@43: 
Chris@43: 	newSelection = Selection(f0, f1);
Chris@43: 	layer->resizeSelection(m_editingSelection, newSelection);
Chris@43:     }
Chris@43:     
Chris@43:     m_manager->removeSelection(m_editingSelection);
Chris@43:     m_manager->addSelection(newSelection);
Chris@43: 
Chris@99:     CommandHistory::getInstance()->endCompoundOperation();
Chris@99: 
Chris@42:     m_editingSelection = Selection();
Chris@42:     return true;
Chris@42: }
Chris@42: 
Chris@13: void
Chris@13: Pane::toolModeChanged()
Chris@13: {
Chris@13:     ViewManager::ToolMode mode = m_manager->getToolMode();
Chris@101: //    std::cerr << "Pane::toolModeChanged(" << mode << ")" << std::endl;
Chris@13: 
Chris@13:     switch (mode) {
Chris@13: 
Chris@13:     case ViewManager::NavigateMode:
Chris@13: 	setCursor(Qt::PointingHandCursor);
Chris@13: 	break;
Chris@13: 	
Chris@13:     case ViewManager::SelectMode:
Chris@13: 	setCursor(Qt::ArrowCursor);
Chris@13: 	break;
Chris@13: 	
Chris@13:     case ViewManager::EditMode:
Chris@19: 	setCursor(Qt::UpArrowCursor);
Chris@13: 	break;
Chris@13: 	
Chris@13:     case ViewManager::DrawMode:
Chris@13: 	setCursor(Qt::CrossCursor);
Chris@13: 	break;
Chris@36: /*	
Chris@13:     case ViewManager::TextMode:
Chris@13: 	setCursor(Qt::IBeamCursor);
Chris@13: 	break;
Chris@36: */
Chris@13:     }
Chris@13: }
Chris@13: 
Chris@8: QString
Chris@8: Pane::toXmlString(QString indent, QString extraAttributes) const
Chris@8: {
Chris@8:     return View::toXmlString
Chris@8: 	(indent,
Chris@55: 	 QString("type=\"pane\" centreLineVisible=\"%1\" height=\"%2\" %3")
Chris@55: 	 .arg(m_centreLineVisible).arg(height()).arg(extraAttributes));
Chris@8: }
Chris@8: 
Chris@0: 
Chris@0: #ifdef INCLUDE_MOCFILES
Chris@0: #include "Pane.moc.cpp"
Chris@0: #endif
Chris@0: