Mercurial > hg > svgui
view view/Overview.cpp @ 212:e554ab9a4408
* Make audio file reader factory try for a reader based on the file's
extension, before trying all readers
* Remove some debug output
author | Chris Cannam |
---|---|
date | Thu, 01 Mar 2007 12:15:08 +0000 |
parents | e2baee498ec8 |
children | df791d8c8f58 |
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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> using std::cerr; using std::endl; Overview::Overview(QWidget *w) : View(w, false), m_clickedInRange(false) { setObjectName(tr("Overview")); m_followPan = false; m_followZoom = false; setPlaybackFollow(PlaybackIgnore); } void Overview::modelChanged(size_t startFrame, size_t endFrame) { View::modelChanged(startFrame, endFrame); } void Overview::modelReplaced() { 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) { update(); } void Overview::viewCentreFrameChanged(View *v, unsigned long f) { if (m_views.find(v) != m_views.end()) { update(); } } void Overview::viewManagerZoomLevelChanged(void *p, unsigned long z, bool) { if (p == this) return; View *v = (View *)p; if (m_views.find(v) != m_views.end()) { update(); } } void Overview::viewManagerPlaybackFrameChanged(unsigned long f) { bool changed = false; 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. 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(this, 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) { m_centreFrame = centreFrame; 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(Qt::black); 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()); 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(); for (ViewSet::iterator i = m_views.begin(); i != m_views.end(); ++i) { if (*i) { m_clickedInRange = true; m_dragCentreFrame = ((View *)*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)) { emit centreFrameChanged(newCentreFrame, true, PlaybackIgnore); } } void Overview::mouseDoubleClickEvent(QMouseEvent *e) { long frame = getFrameForX(e->x()); emit centreFrameChanged(frame, true, PlaybackIgnore); } void Overview::enterEvent(QEvent *) { emit contextHelpChanged(tr("Click and drag to navigate; double-click to jump")); } void Overview::leaveEvent(QEvent *) { emit contextHelpChanged(""); }