git.sesse.net Git - kdenlive/blob - src/histogram.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 #include <QMenu>
  12 #include <QTime>
  13 #include "histogramgenerator.h"
  14 #include "histogram.h"
  15 #include "renderer.h"
  16
  17 Histogram::Histogram(Monitor *projMonitor, Monitor *clipMonitor, QWidget *parent) :
  18     AbstractScopeWidget(projMonitor, clipMonitor, parent)
  19 {
  20     ui = new Ui::Histogram_UI();
  21     ui->setupUi(this);
  22
  23     ui->cbY->setChecked(true);
  24     ui->cbR->setChecked(true);
  25     ui->cbG->setChecked(true);
  26     ui->cbB->setChecked(true);
  27
  28
  29     m_aUnscaled = new QAction(i18n("Unscaled"), this);
  30     m_aUnscaled->setCheckable(true);
  31     m_menu->addSeparator();
  32     m_menu->addAction(m_aUnscaled);
  33
  34     bool b = true;
  35     b &= connect(ui->cbY, SIGNAL(toggled(bool)), this, SLOT(forceUpdateScope()));
  36     b &= connect(ui->cbR, SIGNAL(toggled(bool)), this, SLOT(forceUpdateScope()));
  37     b &= connect(ui->cbG, SIGNAL(toggled(bool)), this, SLOT(forceUpdateScope()));
  38     b &= connect(ui->cbB, SIGNAL(toggled(bool)), this, SLOT(forceUpdateScope()));
  39     b &= connect(m_aUnscaled, SIGNAL(toggled(bool)), this, SLOT(forceUpdateScope()));
  40     Q_ASSERT(b);
  41
  42     init();
  43 }
  44
  45 Histogram::~Histogram()
  46 {
  47     writeConfig();
  48
  49     delete ui;
  50     delete m_aUnscaled;
  51 }
  52
  53 void Histogram::readConfig()
  54 {
  55     AbstractScopeWidget::readConfig();
  56
  57     KSharedConfigPtr config = KGlobal::config();
  58     KConfigGroup scopeConfig(config, configName());
  59     ui->cbY->setChecked(scopeConfig.readEntry("yEnabled", true));
  60     ui->cbR->setChecked(scopeConfig.readEntry("rEnabled", true));
  61     ui->cbG->setChecked(scopeConfig.readEntry("gEnabled", true));
  62     ui->cbB->setChecked(scopeConfig.readEntry("bEnabled", true));
  63 }
  64
  65 void Histogram::writeConfig()
  66 {
  67     KSharedConfigPtr config = KGlobal::config();
  68     KConfigGroup scopeConfig(config, configName());
  69     scopeConfig.writeEntry("yEnabled", ui->cbY->isChecked());
  70     scopeConfig.writeEntry("rEnabled", ui->cbR->isChecked());
  71     scopeConfig.writeEntry("gEnabled", ui->cbG->isChecked());
  72     scopeConfig.writeEntry("bEnabled", ui->cbB->isChecked());
  73     scopeConfig.sync();
  74 }
  75
  76 QString Histogram::widgetName() const { return QString("Histogram"); }
  77
  78 bool Histogram::isHUDDependingOnInput() const { return false; }
  79 bool Histogram::isScopeDependingOnInput() const { return true; }
  80 bool Histogram::isBackgroundDependingOnInput() const { return false; }
  81
  82 QRect Histogram::scopeRect()
  83 {
  84     qDebug() << "According to the spacer, the top left point is " << ui->verticalSpacer->geometry().x() << "/" << ui->verticalSpacer->geometry().y();
  85     QPoint topleft(offset, offset+ ui->verticalSpacer->geometry().y());
  86     return QRect(topleft, this->rect().size() - QSize(topleft.x() + offset, topleft.y() + offset));
  87 }
  88
  89 QImage Histogram::renderHUD(uint)
  90 {
  91     emit signalHUDRenderingFinished(0, 1);
  92     return QImage();
  93 }
  94 QImage Histogram::renderScope(uint accelFactor, QImage qimage)
  95 {
  96     QTime start = QTime::currentTime();
  97     start.start();
  98
  99     const int componentFlags =   (ui->cbY->isChecked() ? 1 : 0) * HistogramGenerator::ComponentY
 100                                | (ui->cbR->isChecked() ? 1 : 0) * HistogramGenerator::ComponentR
 101                                | (ui->cbG->isChecked() ? 1 : 0) * HistogramGenerator::ComponentG
 102                                | (ui->cbB->isChecked() ? 1 : 0) * HistogramGenerator::ComponentB;
 103
 104     QImage histogram = m_histogramGenerator->calculateHistogram(m_scopeRect.size(), qimage,
 105                                                        componentFlags, m_aUnscaled->isChecked(), accelFactor);
 106
 107     emit signalScopeRenderingFinished(start.elapsed(), accelFactor);
 108     return histogram;
 109 }
 110 QImage Histogram::renderBackground(uint)
 111 {
 112     emit signalBackgroundRenderingFinished(0, 1);
 113     return QImage();
 114 }