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annotate src/pngplayer.h @ 32:179239c94740

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(issue7-8) Add shortcuts for play/pause and next
author Andre Heinecke <andre.heinecke@intevation.de>
date Wed, 06 May 2015 15:31:54 +0200
parents 64a51a42c01f
children 0c05958d254c
rev   line source
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1 #ifndef PNGPLAYER_H
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2 #define PNGPLAYER_H
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3 /* Copyright (C) 2015 by ETH Zürich
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4 * Software engineering by Intevation GmbH
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5 *
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6 * This file is Free Software under the GNU GPL (v>=2)
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7 * and comes with ABSOLUTELY NO WARRANTY!
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8 * See LICENSE.txt for details.
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9 */
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10 #include <QWidget>
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11 #include <QDir>
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12 #include <QTimer>
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13 #include <QDateTime>
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15 class QSlider;
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16 class QLabel;
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17 class QPushButton;
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18 class ImageLabel;
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19
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20 class PNGPlayer: public QWidget
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21 {
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22 Q_OBJECT
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23
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24 public:
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25 PNGPlayer (QWidget * parent = 0, Qt::WindowFlags f = 0);
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26
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27 protected:
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28 void setupGUI();
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29
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30 protected slots:
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31 /**@brief the view slider was changed manually */
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32 void sliderChanged();
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33 /**@brief the view slider was pressed */
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34 void sliderPressed();
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35 /**@brief the view slider was released */
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36 void sliderReleased();
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37
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38 /**@brief jump to the first frame */
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39 void firstClicked();
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40
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41 /**@brief jump to the last frame */
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42 void lastClicked();
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43
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44 public slots:
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45 /**@brief show a PNG in the viewer.
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46 *
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47 * @param fileName: The picture file to show.
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48 * @param current: The row index of the currently shown image.
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49 * @param max: The row count.
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50 * @param timestamp: The timestamp of the image.
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51 */
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52 void showPicture(const QString& fileName, int current, int max,
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53 const QDateTime& timestamp);
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54
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55 /**@brief set the base dir to which filenames will be relative. */
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56 void setBaseDir(const QString& dirName) { mBaseDir.setPath(dirName); }
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57
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58 /**@brief update positional information / slider current / max info. */
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59 void updatePositions(int current, int max, const QDateTime& timestamp);
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60
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61 /**@brief set the replay speed */
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62 void setSpeed(int mSecsPerPicture);
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63
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64 /**@brief start or pause the replay */
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65 void togglePlay();
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66
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67 /**@brief the speed bar was changed */
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68 void speedChanged();
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69
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70 Q_SIGNALS:
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71 /** @brief Emited if something went wrong. e.g. file not readable */
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72 void error(const QString& msg);
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73
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74 /** @brief Emited if the player wants to advance to the next picture */
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75 void advance();
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76
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77 /** @brief Emited if the player wants to go back to the last picture */
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78 void back();
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79
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80 /** @brief Emited it the player wants to advance to a specific frame. */
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81 void jumpToFrame(int frame);
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82
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83 protected:
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84 ImageLabel *mPNGLabel;
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85 QLabel *mPositionLabel,
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86 *mCurSpeedLabel;
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87 int mCurSpeed;
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88 int mMax;
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89 QDir mBaseDir;
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90 QTimer mAdvanceTimer;
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91 QSlider *mSlider,
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92 *mSpeedSlider;
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93 QPushButton *mPlayBtn;
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94 };
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97
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98 #endif // PNGPLAYER_H
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