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 "TimeRulerLayer.h"
Chris@0: 
Chris@335: #include "LayerFactory.h"
Chris@335: 
Chris@128: #include "data/model/Model.h"
Chris@0: #include "base/RealTime.h"
Chris@1078: #include "view/View.h"
Chris@1078: 
Chris@376: #include "ColourDatabase.h"
Chris@1078: #include "PaintAssistant.h"
Chris@0: 
Chris@0: #include <QPainter>
Chris@0: 
Chris@0: #include <iostream>
Chris@271: #include <cmath>
Chris@1021: #include <stdexcept>
Chris@0: 
Chris@1342: #define DEBUG_TIME_RULER_LAYER 1
Chris@370: 
Chris@682: 
Chris@44: TimeRulerLayer::TimeRulerLayer() :
Chris@287:     SingleColourLayer(),
Chris@0:     m_model(0),
Chris@0:     m_labelHeight(LabelTop)
Chris@0: {
Chris@44:     
Chris@0: }
Chris@0: 
Chris@0: void
Chris@0: TimeRulerLayer::setModel(Model *model)
Chris@0: {
Chris@0:     if (m_model == model) return;
Chris@0:     m_model = model;
Chris@0:     emit modelReplaced();
Chris@0: }
Chris@0: 
Chris@271: bool
Chris@918: TimeRulerLayer::snapToFeatureFrame(LayerGeometryProvider *v, sv_frame_t &frame,
Chris@805:                                    int &resolution, SnapType snap) const
Chris@271: {
Chris@271:     if (!m_model) {
Chris@271:         resolution = 1;
Chris@271:         return false;
Chris@271:     }
Chris@271: 
Chris@271:     bool q;
Chris@1341:     int tickUSec = getMajorTickUSec(v, q);
Chris@1341:     RealTime rtick = RealTime(0, tickUSec * 1000);
Chris@908:     sv_samplerate_t rate = m_model->getSampleRate();
Chris@271:     
Chris@271:     RealTime rt = RealTime::frame2RealTime(frame, rate);
Chris@271:     double ratio = rt / rtick;
Chris@271: 
Chris@272:     int rounded = int(ratio);
Chris@271:     RealTime rdrt = rtick * rounded;
Chris@271: 
Chris@908:     sv_frame_t left = RealTime::realTime2Frame(rdrt, rate);
Chris@908:     resolution = int(RealTime::realTime2Frame(rtick, rate));
Chris@908:     sv_frame_t right = left + resolution;
Chris@271: 
Chris@587: //    SVDEBUG << "TimeRulerLayer::snapToFeatureFrame: type "
Chris@272: //              << int(snap) << ", frame " << frame << " (time "
Chris@272: //              << rt << ", tick " << rtick << ", rounded " << rdrt << ") ";
Chris@272: 
Chris@271:     switch (snap) {
Chris@271: 
Chris@271:     case SnapLeft:
Chris@271:         frame = left;
Chris@271:         break;
Chris@271: 
Chris@271:     case SnapRight:
Chris@271:         frame = right;
Chris@271:         break;
Chris@271:         
Chris@271:     case SnapNearest:
Chris@271:     {
Chris@989:         if (llabs(frame - left) > llabs(right - frame)) {
Chris@271:             frame = right;
Chris@271:         } else {
Chris@271:             frame = left;
Chris@271:         }
Chris@271:         break;
Chris@271:     }
Chris@271: 
Chris@271:     case SnapNeighbouring:
Chris@271:     {
Chris@271:         int dl = -1, dr = -1;
Chris@271:         int x = v->getXForFrame(frame);
Chris@271: 
Chris@271:         if (left > v->getStartFrame() &&
Chris@271:             left < v->getEndFrame()) {
Chris@271:             dl = abs(v->getXForFrame(left) - x);
Chris@271:         }
Chris@271: 
Chris@271:         if (right > v->getStartFrame() &&
Chris@271:             right < v->getEndFrame()) {
Chris@271:             dr = abs(v->getXForFrame(right) - x);
Chris@271:         }
Chris@271: 
Chris@271:         int fuzz = 2;
Chris@271: 
Chris@271:         if (dl >= 0 && dr >= 0) {
Chris@271:             if (dl < dr) {
Chris@271:                 if (dl <= fuzz) {
Chris@271:                     frame = left;
Chris@271:                 }
Chris@271:             } else {
Chris@271:                 if (dr < fuzz) {
Chris@271:                     frame = right;
Chris@271:                 }
Chris@271:             }
Chris@271:         } else if (dl >= 0) {
Chris@271:             if (dl <= fuzz) {
Chris@271:                 frame = left;
Chris@271:             }
Chris@271:         } else if (dr >= 0) {
Chris@271:             if (dr <= fuzz) {
Chris@271:                 frame = right;
Chris@271:             }
Chris@271:         }
Chris@271:     }
Chris@271:     }
Chris@271: 
Chris@587: //    SVDEBUG << " -> " << frame << " (resolution = " << resolution << ")" << endl;
Chris@272: 
Chris@271:     return true;
Chris@271: }
Chris@271: 
Chris@271: int
Chris@1341: TimeRulerLayer::getMajorTickUSec(LayerGeometryProvider *v,
Chris@1341:                                  bool &quarterTicks) const
Chris@271: {
Chris@1341:     // return value is in microseconds
Chris@1341:     if (!m_model || !v) return 1000 * 1000;
Chris@271: 
Chris@908:     sv_samplerate_t sampleRate = m_model->getSampleRate();
Chris@1341:     if (!sampleRate) return 1000 * 1000;
Chris@271: 
Chris@908:     sv_frame_t startFrame = v->getStartFrame();
Chris@908:     sv_frame_t endFrame = v->getEndFrame();
Chris@271: 
Chris@1341:     int minPixelSpacing = ViewManager::scalePixelSize(50);
Chris@271: 
Chris@271:     RealTime rtStart = RealTime::frame2RealTime(startFrame, sampleRate);
Chris@271:     RealTime rtEnd = RealTime::frame2RealTime(endFrame, sampleRate);
Chris@271: 
Chris@918:     int count = v->getPaintWidth() / minPixelSpacing;
Chris@271:     if (count < 1) count = 1;
Chris@271:     RealTime rtGap = (rtEnd - rtStart) / count;
Chris@271: 
Chris@1341:     int incus;
Chris@271:     quarterTicks = false;
Chris@271: 
Chris@271:     if (rtGap.sec > 0) {
Chris@1341:         incus = 1000 * 1000;
Chris@1266:         int s = rtGap.sec;
Chris@1341:         if (s > 0) { incus *= 5; s /= 5; }
Chris@1341:         if (s > 0) { incus *= 2; s /= 2; }
Chris@1341:         if (s > 0) { incus *= 6; s /= 6; quarterTicks = true; }
Chris@1341:         if (s > 0) { incus *= 5; s /= 5; quarterTicks = false; }
Chris@1341:         if (s > 0) { incus *= 2; s /= 2; }
Chris@1341:         if (s > 0) { incus *= 6; s /= 6; quarterTicks = true; }
Chris@1266:         while (s > 0) {
Chris@1341:             incus *= 10;
Chris@1266:             s /= 10;
Chris@1266:             quarterTicks = false;
Chris@1266:         }
Chris@1341:     } else if (rtGap.msec() > 0) {
Chris@1341:         incus = 1000;
Chris@1341:         int ms = rtGap.msec();
Chris@1341:         if (ms > 0) { incus *= 10; ms /= 10; }
Chris@1341:         if (ms > 0) { incus *= 10; ms /= 10; }
Chris@1341:         if (ms > 0) { incus *= 5; ms /= 5; }
Chris@1341:         if (ms > 0) { incus *= 2; ms /= 2; }
Chris@271:     } else {
Chris@1341:         incus = 1;
Chris@1341:         int us = rtGap.usec();
Chris@1341:         if (us > 0) { incus *= 10; us /= 10; }
Chris@1341:         if (us > 0) { incus *= 10; us /= 10; }
Chris@1341:         if (us > 0) { incus *= 5; us /= 5; }
Chris@1341:         if (us > 0) { incus *= 2; us /= 2; }
Chris@271:     }
Chris@271: 
Chris@1341:     return incus;
Chris@1341: }
Chris@1341: 
Chris@1341: int
Chris@1341: TimeRulerLayer::getXForUSec(LayerGeometryProvider *v, double us) const
Chris@1341: {
Chris@1341:     sv_samplerate_t sampleRate = m_model->getSampleRate();
Chris@1341:     double dframe = (us * sampleRate) / 1000000.0;
Chris@1341:     double eps = 1e-7;
Chris@1341:     sv_frame_t frame = sv_frame_t(floor(dframe + eps));
Chris@1341:     int x;
Chris@1341: 
Chris@1341:     ZoomLevel zoom = v->getZoomLevel();
Chris@1341: 
Chris@1341:     if (zoom.zone == ZoomLevel::FramesPerPixel) {
Chris@1341:             
Chris@1341:         frame /= zoom.level;
Chris@1341:         frame *= zoom.level; // so frame corresponds to an exact pixel
Chris@1341:         
Chris@1341:         x = v->getXForFrame(frame);
Chris@1341:         
Chris@1341:     } else {
Chris@1341: 
Chris@1341:         double off = dframe - double(frame);
Chris@1341:         int x0 = v->getXForFrame(frame);
Chris@1341:         int x1 = v->getXForFrame(frame + 1);
Chris@1341:         
Chris@1341:         x = int(x0 + off * (x1 - x0));
Chris@1341:     }
Chris@1341: 
Chris@1341: #ifdef DEBUG_TIME_RULER_LAYER
Chris@1341:     cerr << "Considering frame = " << frame << ", x = " << x << endl;
Chris@1341: #endif
Chris@1341:         
Chris@1341:     return x;
Chris@271: }
Chris@271: 
Chris@0: void
Chris@916: TimeRulerLayer::paint(LayerGeometryProvider *v, QPainter &paint, QRect rect) const
Chris@0: {
Chris@370: #ifdef DEBUG_TIME_RULER_LAYER
Chris@587:     SVDEBUG << "TimeRulerLayer::paint (" << rect.x() << "," << rect.y()
Chris@1266:               << ") [" << rect.width() << "x" << rect.height() << "]" << endl;
Chris@370: #endif
Chris@0:     
Chris@0:     if (!m_model || !m_model->isOK()) return;
Chris@0: 
Chris@908:     sv_samplerate_t sampleRate = m_model->getSampleRate();
Chris@0:     if (!sampleRate) return;
Chris@0: 
Chris@908:     sv_frame_t startFrame = v->getFrameForX(rect.x() - 50);
Chris@0: 
Chris@370: #ifdef DEBUG_TIME_RULER_LAYER
Chris@682:     cerr << "start frame = " << startFrame << endl;
Chris@370: #endif
Chris@0: 
Chris@0:     bool quarter = false;
Chris@1341:     int incus = getMajorTickUSec(v, quarter);
Chris@0: 
Chris@1341:     int us = int(lrint(1000.0 * 1000.0 * (double(startFrame) /
Chris@1341:                                           double(sampleRate))));
Chris@1341:     us = (us / incus) * incus - incus;
Chris@0: 
Chris@370: #ifdef DEBUG_TIME_RULER_LAYER
Chris@1341:     cerr << "start us = " << us << " at step " << incus << endl;
Chris@370: #endif
Chris@370: 
Chris@370:     // Calculate the number of ticks per increment -- approximate
Chris@370:     // values for x and frame counts here will do, no rounding issue.
Chris@1341:     // We always use the exact incus in our calculations for where to
Chris@370:     // draw the actual ticks or lines.
Chris@370: 
Chris@370:     int minPixelSpacing = 50;
Chris@1341:     sv_frame_t incFrame = lrint((incus * sampleRate) / 1000000);
Chris@1326:     int incX = int(round(v->getZoomLevel().framesToPixels(double(incFrame))));
Chris@0:     int ticks = 10;
Chris@0:     if (incX < minPixelSpacing * 2) {
Chris@1266:         ticks = quarter ? 4 : 5;
Chris@0:     }
Chris@0: 
Chris@370:     QColor greyColour = getPartialShades(v)[1];
Chris@0: 
Chris@370:     paint.save();
Chris@0: 
Chris@832:     // Do not label time zero - we now overlay an opaque area over
Chris@832:     // time < 0 which would cut it in half
Chris@1341:     int minlabel = 1; // us
Chris@1021:     
Chris@0:     while (1) {
Chris@0: 
Chris@370:         // frame is used to determine where to draw the lines, so it
Chris@370:         // needs to correspond to an exact pixel (so that we don't get
Chris@370:         // a different pixel when scrolling a small amount and
Chris@370:         // re-drawing with a different start frame).
Chris@370: 
Chris@1341:         double dus = us;
Chris@370: 
Chris@1341:         int x = getXForUSec(v, dus);
Chris@0: 
Chris@370:         if (x >= rect.x() + rect.width() + 50) {
Chris@370: #ifdef DEBUG_TIME_RULER_LAYER
Chris@682:             cerr << "X well out of range, ending here" << endl;
Chris@370: #endif
Chris@370:             break;
Chris@370:         }
Chris@0: 
Chris@1341:         if (x >= rect.x() - 50 && us >= minlabel) {
Chris@0: 
Chris@1342:             RealTime rt = RealTime::fromMicroseconds(us);
Chris@375: 
Chris@370: #ifdef DEBUG_TIME_RULER_LAYER
Chris@1342:             cerr << "X in range, drawing line here for time " << rt.toText() << " (usec = " << us << ")" << endl;
Chris@370: #endif
Chris@0: 
Chris@370:             QString text(QString::fromStdString(rt.toText()));
Chris@370:             QFontMetrics metrics = paint.fontMetrics();
Chris@370:             int tw = metrics.width(text);
Chris@0: 
Chris@370:             if (tw < 50 &&
Chris@370:                 (x < rect.x() - tw/2 ||
Chris@370:                  x >= rect.x() + rect.width() + tw/2)) {
Chris@370: #ifdef DEBUG_TIME_RULER_LAYER
Chris@682:                 cerr << "hm, maybe X isn't in range after all (x = " << x << ", tw = " << tw << ", rect.x() = " << rect.x() << ", rect.width() = " << rect.width() << ")" << endl;
Chris@370: #endif
Chris@370:             }
Chris@70: 
Chris@370:             paint.setPen(greyColour);
Chris@918:             paint.drawLine(x, 0, x, v->getPaintHeight());
Chris@370: 
Chris@370:             paint.setPen(getBaseQColor());
Chris@370:             paint.drawLine(x, 0, x, 5);
Chris@918:             paint.drawLine(x, v->getPaintHeight() - 6, x, v->getPaintHeight() - 1);
Chris@370: 
Chris@370:             int y;
Chris@370:             switch (m_labelHeight) {
Chris@370:             default:
Chris@370:             case LabelTop:
Chris@370:                 y = 6 + metrics.ascent();
Chris@370:                 break;
Chris@370:             case LabelMiddle:
Chris@918:                 y = v->getPaintHeight() / 2 - metrics.height() / 2 + metrics.ascent();
Chris@370:                 break;
Chris@370:             case LabelBottom:
Chris@918:                 y = v->getPaintHeight() - metrics.height() + metrics.ascent() - 6;
Chris@370:             }
Chris@370: 
Chris@370:             if (v->getViewManager() && v->getViewManager()->getOverlayMode() !=
Chris@370:                 ViewManager::NoOverlays) {
Chris@370: 
Chris@919:                 if (v->getView()->getLayer(0) == this) {
Chris@370:                     // backmost layer, don't worry about outlining the text
Chris@370:                     paint.drawText(x+2 - tw/2, y, text);
Chris@370:                 } else {
Chris@1078:                     PaintAssistant::drawVisibleText(v, paint, x+2 - tw/2, y, text, PaintAssistant::OutlinedText);
Chris@370:                 }
Chris@70:             }
Chris@70:         }
Chris@0: 
Chris@1266:         paint.setPen(greyColour);
Chris@0: 
Chris@1266:         for (int i = 1; i < ticks; ++i) {
Chris@370: 
Chris@1341:             dus = us + (i * double(incus)) / ticks;
Chris@370: 
Chris@1341:             x = getXForUSec(v, dus);
Chris@370: 
Chris@370:             if (x < rect.x() || x >= rect.x() + rect.width()) {
Chris@370: #ifdef DEBUG_TIME_RULER_LAYER
Chris@682: //                cerr << "tick " << i << ": X out of range, going on to next tick" << endl;
Chris@370: #endif
Chris@370:                 continue;
Chris@370:             }
Chris@370: 
Chris@370: #ifdef DEBUG_TIME_RULER_LAYER
Chris@682:             cerr << "tick " << i << " in range, drawing at " << x << endl;
Chris@370: #endif
Chris@370: 
Chris@1266:             int sz = 5;
Chris@1266:             if (ticks == 10) {
Chris@1266:                 if ((i % 2) == 1) {
Chris@1266:                     if (i == 5) {
Chris@1266:                         paint.drawLine(x, 0, x, v->getPaintHeight());
Chris@1266:                     } else sz = 3;
Chris@1266:                 } else {
Chris@1266:                     sz = 7;
Chris@1266:                 }
Chris@1266:             }
Chris@1266:             paint.drawLine(x, 0, x, sz);
Chris@1266:             paint.drawLine(x, v->getPaintHeight() - sz - 1, x, v->getPaintHeight() - 1);
Chris@1266:         }
Chris@375: 
Chris@1341:         us += incus;
Chris@0:     }
Chris@0: 
Chris@0:     paint.restore();
Chris@0: }
Chris@287: 
Chris@287: int
Chris@287: TimeRulerLayer::getDefaultColourHint(bool darkbg, bool &impose)
Chris@287: {
Chris@287:     impose = true;
Chris@287:     return ColourDatabase::getInstance()->getColourIndex
Chris@287:         (QString(darkbg ? "White" : "Black"));
Chris@287: }
Chris@287: 
Chris@335: QString TimeRulerLayer::getLayerPresentationName() const
Chris@335: {
Chris@335:     LayerFactory *factory = LayerFactory::getInstance();
Chris@335:     QString layerName = factory->getLayerPresentationName
Chris@335:         (factory->getLayerType(this));
Chris@335:     return layerName;
Chris@335: }
Chris@335: 
Chris@316: void
Chris@316: TimeRulerLayer::toXml(QTextStream &stream,
Chris@316:                       QString indent, QString extraAttributes) const
Chris@6: {
Chris@316:     SingleColourLayer::toXml(stream, indent, extraAttributes);
Chris@6: }
Chris@6: 
Chris@11: void
Chris@11: TimeRulerLayer::setProperties(const QXmlAttributes &attributes)
Chris@11: {
Chris@287:     SingleColourLayer::setProperties(attributes);
Chris@11: }
Chris@11: