git.sesse.net Git - kdenlive/blob - src/vectorscope.cpp

   1 /***************************************************************************
   2  *   Copyright (C) 2010 by Simon Andreas Eugster (simon.eu@gmail.com)      *
   3  *   This file is part of kdenlive. See www.kdenlive.org.                  *
   4  *                                                                         *
   5  *   This program is free software; you can redistribute it and/or modify  *
   6  *   it under the terms of the GNU General Public License as published by  *
   7  *   the Free Software Foundation; either version 2 of the License, or     *
   8  *   (at your option) any later version.                                   *
   9  ***************************************************************************/
  10
  11
  12 #include <QAction>
  13 #include <QColor>
  14 #include <QDebug>
  15 #include <QMouseEvent>
  16 #include <QMenu>
  17 #include <QPainter>
  18
  19 #include <QTime>
  20
  21 #include "colorplaneexport.h"
  22 #include "colortools.h"
  23 #include "renderer.h"
  24 #include "vectorscope.h"
  25 #include "vectorscopegenerator.h"
  26
  27 const float P75 = .75;
  28 const unsigned char DEFAULT_Y = 255;
  29
  30 const QPointF YUV_R(-.147,  .615);
  31 const QPointF YUV_G(-.289, -.515);
  32 const QPointF YUV_B(.437, -.100);
  33 const QPointF YUV_Cy(.147, -.615);
  34 const QPointF YUV_Mg(.289,  .515);
  35 const QPointF YUV_Yl(-.437,  .100);
  36
  37 const QPen penThick(QBrush(QColor(250,250,250)), 2, Qt::SolidLine);
  38 const QPen penThin(QBrush(QColor(250,250,250)), 1, Qt::SolidLine);
  39 const QPen penLight(QBrush(QColor(200,200,250,150)), 1, Qt::SolidLine);
  40 const QPen penDark(QBrush(QColor(0,0,20,250)), 1, Qt::SolidLine);
  41
  42
  43 Vectorscope::Vectorscope(Monitor *projMonitor, Monitor *clipMonitor, QWidget *parent) :
  44     AbstractScopeWidget(projMonitor, clipMonitor, parent),
  45     m_gain(1),
  46     m_circleEnabled(false)
  47 {
  48     ui = new Ui::Vectorscope_UI();
  49     ui->setupUi(this);
  50
  51     m_colorTools = new ColorTools();
  52     m_colorPlaneExport = new ColorPlaneExport(this);
  53     m_vectorscopeGenerator = new VectorscopeGenerator();
  54
  55     ui->paintMode->addItem(i18n("Green 2"), QVariant(VectorscopeGenerator::PaintMode_Green2));
  56     ui->paintMode->addItem(i18n("Green"), QVariant(VectorscopeGenerator::PaintMode_Green));
  57     ui->paintMode->addItem(i18n("Black"), QVariant(VectorscopeGenerator::PaintMode_Black));
  58     ui->paintMode->addItem(i18n("Modified YUV (Chroma)"), QVariant(VectorscopeGenerator::PaintMode_Chroma));
  59     ui->paintMode->addItem(i18n("YUV"), QVariant(VectorscopeGenerator::PaintMode_YUV));
  60     ui->paintMode->addItem(i18n("Original Color"), QVariant(VectorscopeGenerator::PaintMode_Original));
  61
  62     ui->backgroundMode->addItem(i18n("None"), QVariant(BG_NONE));
  63     ui->backgroundMode->addItem(i18n("YUV"), QVariant(BG_YUV));
  64     ui->backgroundMode->addItem(i18n("Modified YUV (Chroma)"), QVariant(BG_CHROMA));
  65
  66     ui->sliderGain->setMinimum(0);
  67     ui->sliderGain->setMaximum(40);
  68
  69     bool b = true;
  70     b &= connect(ui->backgroundMode, SIGNAL(currentIndexChanged(int)), this, SLOT(slotBackgroundChanged()));
  71     b &= connect(ui->sliderGain, SIGNAL(valueChanged(int)), this, SLOT(slotGainChanged(int)));
  72     b &= connect(ui->paintMode, SIGNAL(currentIndexChanged(int)), this, SLOT(forceUpdateScope()));
  73     ui->sliderGain->setValue(0);
  74
  75
  76     ///// Build context menu /////
  77
  78     m_menu->addSeparator();
  79
  80     m_aExportBackground = new QAction(i18n("Export background"), this);
  81     m_menu->addAction(m_aExportBackground);
  82     b &= connect(m_aExportBackground, SIGNAL(triggered()), this, SLOT(slotExportBackground()));
  83
  84     m_a75PBox = new QAction(i18n("75% box"), this);
  85     m_a75PBox->setCheckable(true);
  86     m_menu->addAction(m_a75PBox);
  87     b &= connect(m_a75PBox, SIGNAL(changed()), this, SLOT(forceUpdateBackground()));
  88
  89     m_aAxisEnabled = new QAction(i18n("Draw axis"), this);
  90     m_aAxisEnabled->setCheckable(true);
  91     m_menu->addAction(m_aAxisEnabled);
  92     b &= connect(m_aAxisEnabled, SIGNAL(changed()), this, SLOT(forceUpdateBackground()));
  93
  94     Q_ASSERT(b);
  95
  96
  97     this->setMouseTracking(true);
  98     slotGainChanged(ui->sliderGain->value());
  99
 100     init();
 101 }
 102
 103 Vectorscope::~Vectorscope()
 104 {
 105     writeConfig();
 106
 107     delete m_colorTools;
 108     delete m_colorPlaneExport;
 109     delete m_vectorscopeGenerator;
 110
 111     delete m_aExportBackground;
 112     delete m_aAxisEnabled;
 113     delete m_a75PBox;
 114 }
 115
 116 QString Vectorscope::widgetName() const { return QString("Vectorscope"); }
 117
 118 void Vectorscope::readConfig()
 119 {
 120     AbstractScopeWidget::readConfig();
 121
 122     KSharedConfigPtr config = KGlobal::config();
 123     KConfigGroup scopeConfig(config, configName());
 124     m_a75PBox->setChecked(scopeConfig.readEntry("75PBox", false));
 125     m_aAxisEnabled->setChecked(scopeConfig.readEntry("axis", false));
 126     ui->backgroundMode->setCurrentIndex(scopeConfig.readEntry("backgroundmode").toInt());
 127     ui->paintMode->setCurrentIndex(scopeConfig.readEntry("paintmode").toInt());
 128 }
 129
 130 void Vectorscope::writeConfig()
 131 {
 132     KSharedConfigPtr config = KGlobal::config();
 133     KConfigGroup scopeConfig(config, configName());
 134     scopeConfig.writeEntry("75PBox", m_a75PBox->isChecked());
 135     scopeConfig.writeEntry("axis", m_aAxisEnabled->isChecked());
 136     scopeConfig.writeEntry("backgroundmode", ui->backgroundMode->currentIndex());
 137     scopeConfig.writeEntry("paintMode", ui->paintMode->currentIndex());
 138     scopeConfig.sync();
 139 }
 140
 141 QRect Vectorscope::scopeRect()
 142 {
 143     // Distance from top/left/right
 144     int offset = 6;
 145
 146     // We want to paint below the controls area. The line is the lowest element.
 147     QPoint topleft(offset, ui->verticalSpacer->geometry().y()+offset);
 148     QPoint bottomright(ui->horizontalSpacer->geometry().right()-offset, this->size().height()-offset);
 149
 150     QRect scopeRect(topleft, bottomright);
 151
 152     // Circle Width: min of width and height
 153     cw = (scopeRect.height() < scopeRect.width()) ? scopeRect.height() : scopeRect.width();
 154     scopeRect.setWidth(cw);
 155     scopeRect.setHeight(cw);
 156
 157
 158     m_centerPoint = m_vectorscopeGenerator->mapToCircle(scopeRect.size(), QPointF(0,0));
 159     pR75 = m_vectorscopeGenerator->mapToCircle(scopeRect.size(), P75*VectorscopeGenerator::scaling*YUV_R);
 160     pG75 = m_vectorscopeGenerator->mapToCircle(scopeRect.size(), P75*VectorscopeGenerator::scaling*YUV_G);
 161     pB75 = m_vectorscopeGenerator->mapToCircle(scopeRect.size(), P75*VectorscopeGenerator::scaling*YUV_B);
 162     pCy75 = m_vectorscopeGenerator->mapToCircle(scopeRect.size(), P75*VectorscopeGenerator::scaling*YUV_Cy);
 163     pMg75 = m_vectorscopeGenerator->mapToCircle(scopeRect.size(), P75*VectorscopeGenerator::scaling*YUV_Mg);
 164     pYl75 = m_vectorscopeGenerator->mapToCircle(scopeRect.size(), P75*VectorscopeGenerator::scaling*YUV_Yl);
 165
 166     return scopeRect;
 167 }
 168
 169 bool Vectorscope::isHUDDependingOnInput() const { return false; }
 170 bool Vectorscope::isScopeDependingOnInput() const { return true; }
 171 bool Vectorscope::isBackgroundDependingOnInput() const { return false; }
 172
 173 QImage Vectorscope::renderHUD(uint)
 174 {
 175
 176     QImage hud;
 177
 178     if (m_circleEnabled) {
 179         // Mouse moved: Draw a circle over the scope
 180
 181         hud = QImage(m_scopeRect.size(), QImage::Format_ARGB32);
 182         hud.fill(qRgba(0, 0, 0, 0));
 183
 184         QPainter davinci(&hud);
 185         QPoint widgetCenterPoint = m_scopeRect.topLeft() + m_centerPoint;
 186
 187         int dx = -widgetCenterPoint.x()+m_mousePos.x();
 188         int dy =  widgetCenterPoint.y()-m_mousePos.y();
 189
 190         QPoint reference = m_vectorscopeGenerator->mapToCircle(m_scopeRect.size(), QPointF(1,0));
 191
 192         float r = sqrt(dx*dx + dy*dy);
 193         float percent = (float) 100*r/VectorscopeGenerator::scaling/m_gain/(reference.x() - widgetCenterPoint.x());
 194
 195         switch (ui->backgroundMode->itemData(ui->backgroundMode->currentIndex()).toInt()) {
 196         case BG_NONE:
 197             davinci.setPen(penLight);
 198             break;
 199         default:
 200             if (r > cw/2) {
 201                 davinci.setPen(penLight);
 202             } else {
 203                 davinci.setPen(penDark);
 204             }
 205             break;
 206         }
 207         davinci.drawEllipse(m_centerPoint, (int)r, (int)r);
 208         davinci.setPen(penThin);
 209         davinci.drawText(QPoint(m_scopeRect.width()-40, m_scopeRect.height()), i18n("%1 \%", QString::number(percent, 'f', 0)));
 210
 211         float angle = copysign(acos(dx/r)*180/M_PI, dy);
 212         davinci.drawText(QPoint(10, m_scopeRect.height()), i18n("%1°", QString::number(angle, 'f', 1)));
 213
 214         m_circleEnabled = false;
 215     } else {
 216         hud = QImage(0, 0, QImage::Format_ARGB32);
 217     }
 218     emit signalHUDRenderingFinished(0, 1);
 219     return hud;
 220 }
 221
 222 QImage Vectorscope::renderScope(uint accelerationFactor, QImage qimage)
 223 {
 224     QTime start = QTime::currentTime();
 225     QImage scope;
 226
 227     if (cw <= 0) {
 228         qDebug() << "Scope size not known yet. Aborting.";
 229     } else {
 230
 231         scope = m_vectorscopeGenerator->calculateVectorscope(m_scopeRect.size(),
 232                                                              qimage,
 233                                                              m_gain, (VectorscopeGenerator::PaintMode) ui->paintMode->itemData(ui->paintMode->currentIndex()).toInt(),
 234                                                              m_aAxisEnabled->isChecked(), accelerationFactor);
 235
 236     }
 237
 238     unsigned int mseconds = start.msecsTo(QTime::currentTime());
 239     emit signalScopeRenderingFinished(mseconds, accelerationFactor);
 240     return scope;
 241 }
 242
 243 QImage Vectorscope::renderBackground(uint)
 244 {
 245     QTime start = QTime::currentTime();
 246     start.start();
 247
 248     QImage bg;
 249     switch (ui->backgroundMode->itemData(ui->backgroundMode->currentIndex()).toInt()) {
 250     case BG_YUV:
 251         qDebug() << "YUV background.";
 252         bg = m_colorTools->yuvColorWheel(m_scopeRect.size(), (unsigned char) 128, 1/VectorscopeGenerator::scaling, false, true);
 253         break;
 254     case BG_CHROMA:
 255         bg = m_colorTools->yuvColorWheel(m_scopeRect.size(), (unsigned char) 255, 1/VectorscopeGenerator::scaling, true, true);
 256         break;
 257     default:
 258         qDebug() << "No background.";
 259         bg = QImage(cw, cw, QImage::Format_ARGB32);
 260         bg.fill(qRgba(0,0,0,0));
 261         break;
 262     }
 263
 264
 265     // Draw the vectorscope circle
 266     QPainter davinci(&bg);
 267     QPoint vinciPoint;
 268
 269
 270     davinci.setRenderHint(QPainter::Antialiasing, true);
 271
 272     davinci.setPen(penThick);
 273     davinci.drawEllipse(0, 0, cw, cw);
 274
 275     // Draw RGB/CMY points with 100% chroma
 276     vinciPoint = m_vectorscopeGenerator->mapToCircle(m_scopeRect.size(), VectorscopeGenerator::scaling*YUV_R);
 277     davinci.drawEllipse(vinciPoint, 4,4);
 278     davinci.drawText(vinciPoint-QPoint(20, -10), "R");
 279
 280     vinciPoint = m_vectorscopeGenerator->mapToCircle(m_scopeRect.size(), VectorscopeGenerator::scaling*YUV_G);
 281     davinci.drawEllipse(vinciPoint, 4,4);
 282     davinci.drawText(vinciPoint-QPoint(20, 0), "G");
 283
 284     vinciPoint = m_vectorscopeGenerator->mapToCircle(m_scopeRect.size(), VectorscopeGenerator::scaling*YUV_B);
 285     davinci.drawEllipse(vinciPoint, 4,4);
 286     davinci.drawText(vinciPoint+QPoint(15, 10), "B");
 287
 288     vinciPoint = m_vectorscopeGenerator->mapToCircle(m_scopeRect.size(), VectorscopeGenerator::scaling*YUV_Cy);
 289     davinci.drawEllipse(vinciPoint, 4,4);
 290     davinci.drawText(vinciPoint+QPoint(15, -5), "Cy");
 291
 292     vinciPoint = m_vectorscopeGenerator->mapToCircle(m_scopeRect.size(), VectorscopeGenerator::scaling*YUV_Mg);
 293     davinci.drawEllipse(vinciPoint, 4,4);
 294     davinci.drawText(vinciPoint+QPoint(15, 10), "Mg");
 295
 296     vinciPoint = m_vectorscopeGenerator->mapToCircle(m_scopeRect.size(), VectorscopeGenerator::scaling*YUV_Yl);
 297     davinci.drawEllipse(vinciPoint, 4,4);
 298     davinci.drawText(vinciPoint-QPoint(25, 0), "Yl");
 299
 300     switch (ui->backgroundMode->itemData(ui->backgroundMode->currentIndex()).toInt()) {
 301     case BG_NONE:
 302         davinci.setPen(penLight);
 303         break;
 304     default:
 305         davinci.setPen(penDark);
 306         break;
 307     }
 308
 309     // Draw axis
 310     if (m_aAxisEnabled->isChecked()) {
 311         davinci.drawLine(m_vectorscopeGenerator->mapToCircle(m_scopeRect.size(), QPointF(0,-.9)), m_vectorscopeGenerator->mapToCircle(m_scopeRect.size(), QPointF(0,.9)));
 312         davinci.drawLine(m_vectorscopeGenerator->mapToCircle(m_scopeRect.size(), QPointF(-.9,0)), m_vectorscopeGenerator->mapToCircle(m_scopeRect.size(), QPointF(.9,0)));
 313     }
 314
 315     // Draw center point
 316     switch (ui->backgroundMode->itemData(ui->backgroundMode->currentIndex()).toInt()) {
 317     case BG_CHROMA:
 318         davinci.setPen(penDark);
 319         break;
 320     default:
 321         davinci.setPen(penThin);
 322         break;
 323     }
 324     davinci.drawEllipse(m_centerPoint, 5,5);
 325
 326
 327     // Draw 75% box
 328     if (m_a75PBox->isChecked()) {
 329         davinci.drawLine(pR75, pYl75);
 330         davinci.drawLine(pYl75, pG75);
 331         davinci.drawLine(pG75, pCy75);
 332         davinci.drawLine(pCy75, pB75);
 333         davinci.drawLine(pB75, pMg75);
 334         davinci.drawLine(pMg75, pR75);
 335     }
 336
 337     // Draw RGB/CMY points with 75% chroma (for NTSC)
 338     davinci.setPen(penThin);
 339     davinci.drawEllipse(pR75, 3,3);
 340     davinci.drawEllipse(pG75, 3,3);
 341     davinci.drawEllipse(pB75, 3,3);
 342     davinci.drawEllipse(pCy75, 3,3);
 343     davinci.drawEllipse(pMg75, 3,3);
 344     davinci.drawEllipse(pYl75, 3,3);
 345
 346     // Draw realtime factor (number of skipped pixels)
 347     if (m_aRealtime->isChecked()) {
 348         davinci.setPen(penThin);
 349         davinci.drawText(QPoint(m_scopeRect.width()-40, m_scopeRect.height()-15), QVariant(m_accelFactorScope).toString().append("x"));
 350     }
 351
 352     emit signalBackgroundRenderingFinished(start.elapsed(), 1);
 353     return bg;
 354 }
 355
 356
 357
 358
 359 ///// Slots /////
 360
 361 void Vectorscope::slotGainChanged(int newval)
 362 {
 363     m_gain = 1 + (float)newval/10;
 364     ui->lblGain->setText(QString::number(m_gain, 'f', 1) + "x");
 365     forceUpdateScope();
 366 }
 367
 368 void Vectorscope::slotExportBackground()
 369 {
 370     qDebug() << "Exporting background";
 371     m_colorPlaneExport->show();
 372
 373 }
 374
 375 void Vectorscope::slotBackgroundChanged()
 376 {
 377     // Background changed, switch to a suitable color mode now
 378     int index;
 379     switch (ui->backgroundMode->itemData(ui->backgroundMode->currentIndex()).toInt()) {
 380     case BG_YUV:
 381         index = ui->paintMode->findData(QVariant(VectorscopeGenerator::PaintMode_Black));
 382         if (index >= 0) {
 383             ui->paintMode->setCurrentIndex(index);
 384         }
 385         break;
 386
 387     case BG_NONE:
 388         if (ui->paintMode->itemData(ui->paintMode->currentIndex()).toInt() == VectorscopeGenerator::PaintMode_Black) {
 389             index = ui->paintMode->findData(QVariant(VectorscopeGenerator::PaintMode_Green2));
 390             ui->paintMode->setCurrentIndex(index);
 391         }
 392         break;
 393     }
 394     forceUpdateBackground();
 395 }
 396
 397
 398
 399 ///// Events /////
 400
 401 void Vectorscope::mouseMoveEvent(QMouseEvent *event)
 402 {
 403     // Draw a circle around the center,
 404     // showing percentage number of the radius length
 405
 406     m_circleEnabled = true;
 407     m_mousePos = event->pos();
 408     forceUpdateHUD();
 409 }
 410
 411 void Vectorscope::leaveEvent(QEvent *event)
 412 {
 413     // Repaint the HUD without the circle
 414
 415     m_circleEnabled = false;
 416     QWidget::leaveEvent(event);
 417     forceUpdateHUD();
 418 }