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NxWM::CMediaPlayer: Fix some state-related bugs introduced yesterday. Improved state-related button displayes. Now correctly catches and handles file selection events

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This commit is contained in:
Gregory Nutt 2014-07-17 10:18:36 -06:00
parent 6f18adea58
commit 47c361c36f
2 changed files with 137 additions and 75 deletions
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6
nxwm/include/cmediaplayer.hxx
View File

@ -228,6 +228,12 @@ namespace NxWM
void setVolumeLevel(void);
/**
* Check if a new file has been selected (or de-selected) in the list box
*/
inline void checkFileSelection(void);
/**
* Handle a widget action event. For this application, that means image
* pre-release events.

192
nxwm/src/cmediaplayer.cxx
View File

@ -799,16 +799,13 @@ void CMediaPlayer::redrawWidgets(void)
m_play->redraw();
}
// Rewind and play buttons are only shown if we are not STOPPED
// Rewind and play buttons
if (m_state != MPLAYER_STOPPED)
{
m_rewind->enableDrawing();
m_rewind->redraw();
m_fforward->enableDrawing();
m_fforward->redraw();
}
m_volume->enableDrawing();
m_volume->redraw();
@ -838,10 +835,18 @@ void CMediaPlayer::setMediaPlayerState(enum EMediaPlayerState state)
m_listbox->enable();
// Play image enabled and ready to start playing
// REVISIT: Really only available if there is a selected file in the list box
// Play image is visible, but enabled and ready to start playing only
// if a file is selected
if (m_fileIndex < 0)
{
m_play->disable();
}
else
{
m_play->enable();
}
m_play->show();
// Pause image is disabled and hidden
@ -1030,6 +1035,83 @@ void CMediaPlayer::setVolumeLevel(void)
}
}
/**
* Check if a new file has been selected (or de-selected) in the list box
*/
void CMediaPlayer::checkFileSelection(void)
{
// Check for new file selections from the list box
int newFileIndex = m_listbox->getSelectedIndex();
// Check if anything is selected
if (newFileIndex < 0)
{
// No file is selected
m_fileIndex = -1;
// Nothing is selected.. If we are not stopped, then stop now
if (m_state != MPLAYER_STOPPED)
{
closeMediaFile();
setMediaPlayerState(MPLAYER_STOPPED);
}
}
// A media file is selected. Were stopped before?
else if (m_state == MPLAYER_STOPPED)
{
// Yes.. open the new media file and go to the PAUSE state
if (!openMediaFile(m_listbox->getSelectedOption()))
{
// Remain in the stopped state if we fail to open the file
m_fileIndex = -1;
gdbg("openMediaFile failed\m");
}
else
{
// And go to the PAUSED state (enabling the PLAY button)
m_fileIndex = newFileIndex;
setMediaPlayerState(MPLAYER_PAUSED);
}
}
// We already have a media file loaded. Is it the same file?
else if (m_fileIndex != newFileIndex)
{
// No.. It is a new file. Close that media file, load the newly
// selected file, and make sure that we are in the paused state
// (that should already be the case)
closeMediaFile();
if (!openMediaFile(m_listbox->getSelectedOption()))
{
// Go to the STOPPED state on a failure to open the media file
// The play button will be disable because m_fileIndex == -1.
gdbg("openMediaFile failed\m");
m_fileIndex = -1;
setMediaPlayerState(MPLAYER_STOPPED);
}
else
{
// And go to the PAUSED state (enabling the PLAY button)
m_fileIndex = newFileIndex;
setMediaPlayerState(MPLAYER_PAUSED);
}
}
}
/**
* Handle a widget action event. For this application, that means image
* pre-release events.
@ -1113,63 +1195,6 @@ void CMediaPlayer::handleActionEvent(const NXWidgets::CWidgetEventArgs &e)
}
}
}
// Check for new file selections from the list box
int newFileIndex = m_listbox->getSelectedIndex();
// Check if anything is selected
if (newFileIndex < 0)
{
// Nothing is selected.. If we are not stopped, then stop now
if (m_state != MPLAYER_STOPPED)
{
closeMediaFile();
setMediaPlayerState(MPLAYER_STOPPED);
}
}
// A media file is selected. Were stopped before?
else if (m_state == MPLAYER_STOPPED)
{
// Yes.. open the new media file and go to the PAUSE state
if (!openMediaFile(m_listbox->getSelectedOption()))
{
m_fileIndex = -1;
gdbg("openMediaFile failed\m");
}
else
{
m_fileIndex = newFileIndex;
setMediaPlayerState(MPLAYER_PAUSED);
}
}
// We already have a media file loaded. Is it the same file?
else if (m_fileIndex != newFileIndex)
{
// No.. It is a new file. Close that media file, load the newly
// selected file, and make sure that we are in the paused state
// (that should already be the case)
closeMediaFile();
if (!openMediaFile(m_listbox->getSelectedOption()))
{
gdbg("openMediaFile failed\m");
m_fileIndex = -1;
setMediaPlayerState(MPLAYER_STOPPED);
}
else
{
m_fileIndex = newFileIndex;
setMediaPlayerState(MPLAYER_PAUSED);
}
}
}
/**
@ -1183,20 +1208,49 @@ void CMediaPlayer::handleReleaseEvent(const NXWidgets::CWidgetEventArgs &e)
if (m_pending == PENDING_PLAY_RELEASE && !m_play->isClicked())
{
// Now perform the delayed state change
// Yes.. Now perform the delayed state change
//
// If we were previously STOPPED or PAUSED, then enter the PLAYING
// state.
if (m_state == MPLAYER_STOPPED || m_state == MPLAYER_PAUSED)
{
setMediaPlayerState(MPLAYER_PLAYING);
m_pending = PENDING_NONE;
}
// Ignore the event if we are already in the PLAYING state
else if (m_state != MPLAYER_PLAYING)
{
// Otherwise, we must be fast forwarding or rewinding. In these
// cases, stop the action and return to the previous state
setMediaPlayerState(m_prevState);
}
}
// Check if the Pause image was released
else if (m_pending == PENDING_PAUSE_RELEASE && !m_pause->isClicked())
{
// Now perform the delayed state change
// Yes.. Now perform the delayed state change
//
// If we were previously PLAYING, then enter the PAUSED state.
if (m_state == MPLAYER_PLAYING)
{
setMediaPlayerState(MPLAYER_PAUSED);
m_pending = PENDING_NONE;
}
// Ignore the event if we are already in the PAUSED or STOPPED states
else if (m_state != MPLAYER_STOPPED && m_state != MPLAYER_PAUSED)
{
// Otherwise, we must be fast forwarding or rewinding. In these
// cases, stop the action and return to the previous state
setMediaPlayerState(m_prevState);
}
}
}
@ -1212,12 +1266,14 @@ void CMediaPlayer::handleReleaseOutsideEvent(const NXWidgets::CWidgetEventArgs &
}
/**
* Handle changes in the volume level.
* Handle value changes. This will get events when there is a change in the
* volume level or a file is selected or deselected.
*/
void CMediaPlayer::handleValueChangeEvent(const NXWidgets::CWidgetEventArgs &e)
{
setVolumeLevel();
checkFileSelection();
}
/**