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

   1 /***************************************************************************
   2                           stopmotion.cpp  -  description
   3                              -------------------
   4     begin                : Feb 28 2008
   5     copyright            : (C) 2010 by Jean-Baptiste Mardelle
   6     email                : jb@kdenlive.org
   7  ***************************************************************************/
   8
   9 /***************************************************************************
  10  *                                                                         *
  11  *   This program is free software; you can redistribute it and/or modify  *
  12  *   it under the terms of the GNU General Public License as published by  *
  13  *   the Free Software Foundation; either version 2 of the License, or     *
  14  *   (at your option) any later version.                                   *
  15  *                                                                         *
  16  ***************************************************************************/
  17
  18 #include "stopmotion.h"
  19 #include "../blackmagic/devices.h"
  20 #include "../slideshowclip.h"
  21 #include "kdenlivesettings.h"
  22
  23
  24 #include <KDebug>
  25 #include <KGlobalSettings>
  26 #include <KFileDialog>
  27 #include <KStandardDirs>
  28 #include <KMessageBox>
  29 #include <kdeversion.h>
  30 #include <KNotification>
  31
  32 #include <QComboBox>
  33 #include <QVBoxLayout>
  34 #include <QTimer>
  35 #include <QAction>
  36
  37 StopmotionWidget::StopmotionWidget(KUrl projectFolder, QWidget *parent) :
  38         m_projectFolder(projectFolder)
  39         , QDialog(parent)
  40         , Ui::Stopmotion_UI()
  41         , m_sequenceFrame(0)
  42 {
  43     setupUi(this);
  44     setWindowTitle(i18n("Stop Motion Capture"));
  45     setFont(KGlobalSettings::toolBarFont());
  46
  47     live_button->setIcon(KIcon("camera-photo"));
  48     frameoverlay_button->setIcon(KIcon("edit-paste"));
  49     m_captureAction = new QAction(KIcon("media-record"), i18n("Capture frame"), this);
  50     m_captureAction->setShortcut(QKeySequence(Qt::Key_Space));
  51     connect(m_captureAction, SIGNAL(triggered()), this, SLOT(slotCaptureFrame()));
  52     capture_button->setDefaultAction(m_captureAction);
  53
  54     preview_button->setIcon(KIcon("media-playback-start"));
  55     removelast_button->setIcon(KIcon("edit-delete"));
  56
  57     capture_button->setEnabled(false);
  58     frameoverlay_button->setEnabled(false);
  59     removelast_button->setEnabled(false);
  60
  61 #if KDE_IS_VERSION(4,4,0)
  62     sequence_name->setClickMessage(i18n("Enter sequence name..."));
  63 #endif
  64
  65     connect(sequence_name, SIGNAL(textChanged(const QString &)), this, SLOT(sequenceNameChanged(const QString &)));
  66     BMInterface::getBlackMagicDeviceList(capture_device, NULL);
  67     QVBoxLayout *lay = new QVBoxLayout;
  68     m_bmCapture = new CaptureHandler(lay);
  69     video_preview->setLayout(lay);
  70     live_button->setChecked(false);
  71     frameoverlay_button->setChecked(false);
  72     button_addsequence->setEnabled(false);
  73     connect(live_button, SIGNAL(clicked(bool)), this, SLOT(slotLive(bool)));
  74     connect(frameoverlay_button, SIGNAL(clicked(bool)), this, SLOT(slotShowOverlay(bool)));
  75     connect(frame_number, SIGNAL(valueChanged(int)), this, SLOT(slotShowFrame(int)));
  76     connect(button_addsequence, SIGNAL(clicked(bool)), this, SLOT(slotAddSequence()));
  77 }
  78
  79 StopmotionWidget::~StopmotionWidget()
  80 {
  81     m_bmCapture->stopPreview();
  82 }
  83
  84 void StopmotionWidget::slotLive(bool isOn)
  85 {
  86     if (isOn) {
  87         m_bmCapture->startPreview(KdenliveSettings::hdmicapturedevice(), KdenliveSettings::hdmicapturemode());
  88         capture_button->setEnabled(sequence_name->text().isEmpty() == false);
  89     }
  90     else {
  91         m_bmCapture->stopPreview();
  92         capture_button->setEnabled(false);
  93     }
  94 }
  95
  96 void StopmotionWidget::slotShowOverlay(bool isOn)
  97 {
  98     if (isOn) {
  99         if (live_button->isChecked() && m_sequenceFrame > 0) {
 100             slotUpdateOverlay();
 101         }
 102     }
 103     else {
 104         m_bmCapture->hideOverlay();
 105     }
 106 }
 107
 108 void StopmotionWidget::slotUpdateOverlay()
 109 {
 110     QString path = getPathForFrame(m_sequenceFrame - 1);
 111     if (!QFile::exists(path)) return;
 112     QImage img(path);
 113     if (img.isNull()) {
 114         QTimer::singleShot(1000, this, SLOT(slotUpdateOverlay()));
 115         return;
 116     }
 117     m_bmCapture->showOverlay(img);
 118 }
 119
 120 void StopmotionWidget::sequenceNameChanged(const QString &name)
 121 {
 122     if (name.isEmpty()) {
 123         button_addsequence->setEnabled(false);
 124         capture_button->setEnabled(false);
 125         frame_number->blockSignals(true);
 126         frame_number->setValue(m_sequenceFrame);
 127         frame_number->blockSignals(false);
 128         frameoverlay_button->setEnabled(false);
 129         removelast_button->setEnabled(false);
 130     }
 131     else {
 132         // Check if we are editing an existing sequence
 133         int count = 0;
 134         QString pattern = SlideshowClip::selectedPath(getPathForFrame(0, sequence_name->text()), false, QString(), &count);
 135         m_sequenceFrame = count;
 136         if (count > 0) {
 137             m_sequenceName = sequence_name->text();
 138             button_addsequence->setEnabled(true);
 139             frameoverlay_button->setEnabled(true);
 140         }
 141         else {
 142             button_addsequence->setEnabled(false);
 143             frameoverlay_button->setEnabled(false);
 144         }
 145         frame_number->setRange(0, m_sequenceFrame);
 146         frame_number->blockSignals(true);
 147         frame_number->setValue(m_sequenceFrame);
 148         frame_number->blockSignals(false);
 149         capture_button->setEnabled(true);
 150     }
 151 }
 152
 153 void StopmotionWidget::slotCaptureFrame()
 154 {
 155     if (m_sequenceName != sequence_name->text()) {
 156         m_sequenceName = sequence_name->text();
 157         m_sequenceFrame = 0;
 158     }
 159
 160     m_bmCapture->captureFrame(getPathForFrame(m_sequenceFrame));
 161     KNotification::event("FrameCaptured");
 162     frameoverlay_button->setEnabled(true);
 163     m_sequenceFrame++;
 164     frame_number->setRange(0, m_sequenceFrame);
 165     frame_number->blockSignals(true);
 166     frame_number->setValue(m_sequenceFrame);
 167     frame_number->blockSignals(false);
 168     button_addsequence->setEnabled(true);
 169     if (frameoverlay_button->isChecked()) QTimer::singleShot(1000, this, SLOT(slotUpdateOverlay()));
 170 }
 171
 172 QString StopmotionWidget::getPathForFrame(int ix, QString seqName)
 173 {
 174     if (seqName.isEmpty()) seqName = m_sequenceName;
 175     return m_projectFolder.path(KUrl::AddTrailingSlash) + seqName + "_" + QString::number(ix).rightJustified(4, '0', false) + ".png";
 176 }
 177
 178 void StopmotionWidget::slotShowFrame(int ix)
 179 {
 180     if (m_sequenceFrame == 0) {
 181         //there are no images in sequence
 182         return;
 183     }
 184     frameoverlay_button->blockSignals(true);
 185     frameoverlay_button->setChecked(false);
 186     frameoverlay_button->blockSignals(false);
 187     if (ix < m_sequenceFrame) {
 188         // Show previous frame
 189         QImage img(getPathForFrame(ix));
 190         capture_button->setEnabled(false);
 191         if (!img.isNull()) m_bmCapture->showOverlay(img, false);
 192     }
 193     else {
 194         m_bmCapture->hideOverlay();
 195         capture_button->setEnabled(true);
 196     }
 197
 198 }
 199
 200 void StopmotionWidget::slotAddSequence()
 201 {
 202     emit addOrUpdateSequence(getPathForFrame(0));
 203 }