Mercurial > hg > svgui
view view/Overview.cpp @ 772:986f1670a502 tonioni
Merge from default branch
author | Chris Cannam |
---|---|
date | Wed, 14 May 2014 09:58:16 +0100 |
parents | 1a0dfcbffaf1 |
children | cf1e8a1abb7b 4c8ca536b54f |
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/* -*- c-basic-offset: 4 indent-tabs-mode: nil -*- vi:set ts=8 sts=4 sw=4: */ /* Sonic Visualiser An audio file viewer and annotation editor. Centre for Digital Music, Queen Mary, University of London. This file copyright 2006 Chris Cannam and QMUL. This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. See the file COPYING included with this distribution for more information. */ #include "Overview.h" #include "layer/Layer.h" #include "data/model/Model.h" #include "base/ZoomConstraint.h" #include <QPaintEvent> #include <QPainter> #include <iostream> //#define DEBUG_OVERVIEW 1 Overview::Overview(QWidget *w) : View(w, false), m_clickedInRange(false) { setObjectName(tr("Overview")); m_followPan = false; m_followZoom = false; setPlaybackFollow(PlaybackIgnore); m_modelTestTime.start(); } void Overview::modelChanged(size_t startFrame, size_t endFrame) { bool zoomChanged = false; size_t frameCount = getModelsEndFrame() - getModelsStartFrame(); int zoomLevel = frameCount / width(); if (zoomLevel < 1) zoomLevel = 1; zoomLevel = getZoomConstraintBlockSize(zoomLevel, ZoomConstraint::RoundUp); if (zoomLevel != m_zoomLevel) { zoomChanged = true; } if (!zoomChanged) { if (m_modelTestTime.elapsed() < 1000) { for (LayerList::const_iterator i = m_layers.begin(); i != m_layers.end(); ++i) { if ((*i)->getModel() && (!(*i)->getModel()->isOK() || !(*i)->getModel()->isReady())) { return; } } } else { m_modelTestTime.restart(); } } View::modelChanged(startFrame, endFrame); } void Overview::modelReplaced() { m_playPointerFrame = getAlignedPlaybackFrame(); View::modelReplaced(); } void Overview::registerView(View *view) { m_views.insert(view); update(); } void Overview::unregisterView(View *view) { m_views.erase(view); update(); } void Overview::globalCentreFrameChanged(unsigned long f) { #ifdef DEBUG_OVERVIEW cerr << "Overview::globalCentreFrameChanged: " << f << endl; #endif update(); } void Overview::viewCentreFrameChanged(View *v, unsigned long f) { #ifdef DEBUG_OVERVIEW cerr << "Overview[" << this << "]::viewCentreFrameChanged(" << v << "): " << f << endl; #endif if (m_views.find(v) != m_views.end()) { update(); } } void Overview::viewZoomLevelChanged(View *v, unsigned long, bool) { if (v == this) return; if (m_views.find(v) != m_views.end()) { update(); } } void Overview::viewManagerPlaybackFrameChanged(unsigned long f) { #ifdef DEBUG_OVERVIEW cerr << "Overview[" << this << "]::viewManagerPlaybackFrameChanged(" << f << "): " << f << endl; #endif bool changed = false; f = getAlignedPlaybackFrame(); if (getXForFrame(m_playPointerFrame) != getXForFrame(f)) changed = true; m_playPointerFrame = f; if (changed) update(); } void Overview::paintEvent(QPaintEvent *e) { // Recalculate zoom in case the size of the widget has changed. #ifdef DEBUG_OVERVIEW cerr << "Overview::paintEvent: width is " << width() << ", centre frame " << m_centreFrame << endl; #endif size_t startFrame = getModelsStartFrame(); size_t frameCount = getModelsEndFrame() - getModelsStartFrame(); int zoomLevel = frameCount / width(); if (zoomLevel < 1) zoomLevel = 1; zoomLevel = getZoomConstraintBlockSize(zoomLevel, ZoomConstraint::RoundUp); if (zoomLevel != m_zoomLevel) { m_zoomLevel = zoomLevel; emit zoomLevelChanged(m_zoomLevel, m_followZoom); } size_t centreFrame = startFrame + m_zoomLevel * (width() / 2); if (centreFrame > (startFrame + getModelsEndFrame())/2) { centreFrame = (startFrame + getModelsEndFrame())/2; } if (centreFrame != m_centreFrame) { #ifdef DEBUG_OVERVIEW cerr << "Overview::paintEvent: Centre frame changed from " << m_centreFrame << " to " << centreFrame << " and thus start frame from " << getStartFrame(); #endif m_centreFrame = centreFrame; #ifdef DEBUG_OVERVIEW cerr << " to " << getStartFrame() << endl; #endif emit centreFrameChanged(m_centreFrame, false, PlaybackIgnore); } View::paintEvent(e); QPainter paint; paint.begin(this); QRect r(rect()); if (e) { r = e->rect(); paint.setClipRect(r); } paint.setPen(getForeground()); int y = 0; int prevx0 = -10; int prevx1 = -10; for (ViewSet::iterator i = m_views.begin(); i != m_views.end(); ++i) { if (!*i) continue; View *w = (View *)*i; long f0 = w->getFrameForX(0); long f1 = w->getFrameForX(w->width()); if (f0 >= 0) { size_t rf0 = w->alignToReference(f0); f0 = alignFromReference(rf0); } if (f1 >= 0) { size_t rf1 = w->alignToReference(f1); f1 = alignFromReference(rf1); } int x0 = getXForFrame(f0); int x1 = getXForFrame(f1); if (x0 != prevx0 || x1 != prevx1) { y += height() / 10 + 1; prevx0 = x0; prevx1 = x1; } if (x1 <= x0) x1 = x0 + 1; paint.drawRect(x0, y, x1 - x0, height() - 2 * y); } paint.end(); } void Overview::mousePressEvent(QMouseEvent *e) { m_clickPos = e->pos(); long clickFrame = getFrameForX(m_clickPos.x()); if (clickFrame > 0) m_dragCentreFrame = clickFrame; else m_dragCentreFrame = 0; m_clickedInRange = true; for (ViewSet::iterator i = m_views.begin(); i != m_views.end(); ++i) { if (*i && (*i)->getAligningModel() == getAligningModel()) { m_dragCentreFrame = (*i)->getCentreFrame(); break; } } } void Overview::mouseReleaseEvent(QMouseEvent *e) { if (m_clickedInRange) { mouseMoveEvent(e); } m_clickedInRange = false; } void Overview::mouseMoveEvent(QMouseEvent *e) { if (!m_clickedInRange) return; long xoff = int(e->x()) - int(m_clickPos.x()); long frameOff = xoff * m_zoomLevel; size_t newCentreFrame = m_dragCentreFrame; if (frameOff > 0) { newCentreFrame += frameOff; } else if (newCentreFrame >= size_t(-frameOff)) { newCentreFrame += frameOff; } else { newCentreFrame = 0; } if (newCentreFrame >= getModelsEndFrame()) { newCentreFrame = getModelsEndFrame(); if (newCentreFrame > 0) --newCentreFrame; } if (std::max(m_centreFrame, newCentreFrame) - std::min(m_centreFrame, newCentreFrame) > size_t(m_zoomLevel)) { size_t rf = alignToReference(newCentreFrame); #ifdef DEBUG_OVERVIEW cerr << "Overview::mouseMoveEvent: x " << e->x() << " and click x " << m_clickPos.x() << " -> frame " << newCentreFrame << " -> rf " << rf << endl; #endif emit centreFrameChanged(rf, true, PlaybackScrollContinuous); } } void Overview::mouseDoubleClickEvent(QMouseEvent *e) { long frame = getFrameForX(e->x()); size_t rf = 0; if (frame > 0) rf = alignToReference(frame); #ifdef DEBUG_OVERVIEW cerr << "Overview::mouseDoubleClickEvent: frame " << frame << " -> rf " << rf << endl; #endif m_clickedInRange = false; // we're not starting a drag with the second click emit centreFrameChanged(rf, true, PlaybackScrollContinuous); } void Overview::enterEvent(QEvent *) { emit contextHelpChanged(tr("Click and drag to navigate; double-click to jump")); } void Overview::leaveEvent(QEvent *) { emit contextHelpChanged(""); }