Mercurial > hg > svgui
view view/Overview.cpp @ 890:1f2dc7fcad92
Oops, included some unintended cruft
author | Chris Cannam |
---|---|
date | Tue, 09 Dec 2014 11:49:27 +0000 |
parents | c17719e488c9 |
children | 2857e6352b06 4a578a360011 |
line wrap: on
line source
/* -*- 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), m_dragCentreFrame(0) { setObjectName(tr("Overview")); m_followPan = false; m_followZoom = false; setPlaybackFollow(PlaybackIgnore); m_modelTestTime.start(); } void Overview::modelChangedWithin(int startFrame, int endFrame) { bool zoomChanged = false; int 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_layerStack.begin(); i != m_layerStack.end(); ++i) { if ((*i)->getModel() && (!(*i)->getModel()->isOK() || !(*i)->getModel()->isReady())) { return; } } } else { m_modelTestTime.restart(); } } View::modelChangedWithin(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(int #ifdef DEBUG_OVERVIEW f #endif ) { #ifdef DEBUG_OVERVIEW cerr << "Overview::globalCentreFrameChanged: " << f << endl; #endif update(); } void Overview::viewCentreFrameChanged(View *v, int #ifdef DEBUG_OVERVIEW f #endif ) { #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, int, bool) { if (v == this) return; if (m_views.find(v) != m_views.end()) { update(); } } void Overview::viewManagerPlaybackFrameChanged(int 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 int startFrame = getModelsStartFrame(); int 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); } int 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; int f0 = w->getFrameForX(0); int f1 = w->getFrameForX(w->width()); if (f0 >= 0) { int rf0 = w->alignToReference(f0); f0 = alignFromReference(rf0); } if (f1 >= 0) { int 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(); int 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; int xoff = int(e->x()) - int(m_clickPos.x()); int frameOff = xoff * m_zoomLevel; int newCentreFrame = m_dragCentreFrame; if (frameOff > 0) { newCentreFrame += frameOff; } else if (newCentreFrame >= int(-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) > int(m_zoomLevel)) { int rf = alignToReference(newCentreFrame); #ifdef DEBUG_OVERVIEW cerr << "Overview::mouseMoveEvent: x " << e->x() << " and click x " << m_clickPos.x() << " -> frame " << newCentreFrame << " -> rf " << rf << endl; #endif if (m_followPlay == PlaybackScrollContinuous || m_followPlay == PlaybackScrollPageWithCentre) { emit centreFrameChanged(rf, true, PlaybackScrollContinuous); } else { emit centreFrameChanged(rf, true, PlaybackIgnore); } } } void Overview::mouseDoubleClickEvent(QMouseEvent *e) { int frame = getFrameForX(e->x()); int 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(""); }