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wxWidgets/samples/mediaplayer/mediaplayer.cpp

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///////////////////////////////////////////////////////////////////////////////
// Name: mediaplayer.cpp
// Purpose: wxMediaCtrl sample
// Author: Ryan Norton
// Modified by:
// Created: 11/10/04
// RCS-ID: $Id$
// Copyright: (c) Ryan Norton
// Licence: wxWindows licence
///////////////////////////////////////////////////////////////////////////////
// %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
// MediaPlayer
//
// This is a simple example of how to use all the funtionality of
// the wxMediaCtrl class in wxWidgets.
//
// To use this sample, simply select Open File from the file menu,
// select the file you want to play - and MediaPlayer will play the file in a
// new notebook page, showing video if neccessary.
//
// You can select one of the menu options, or move the slider around
// to manipulate what is playing.
// %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
// %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
// Known bugs with wxMediaCtrl:
//
// 1) Certain backends can't play the same media file at the same time (MCI,
// Cocoa NSMovieView-Quicktime).
// 2) Positioning on Mac Carbon is messed up if put in a sub-control like a
// Notebook (like this sample does) on OS versions < 10.2.
// %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
// ============================================================================
// Definitions
// ============================================================================
// ----------------------------------------------------------------------------
// Pre-compiled header stuff
// ----------------------------------------------------------------------------
#include "wx/wxprec.h"
#ifdef __BORLANDC__
#pragma hdrstop
#endif
#ifndef WX_PRECOMP
#include "wx/wx.h"
#endif
// ----------------------------------------------------------------------------
// Headers
// ----------------------------------------------------------------------------
#include "wx/mediactrl.h" //for wxMediaCtrl
#include "wx/filedlg.h" //for opening files from OpenFile
#include "wx/slider.h" //for a slider for seeking within media
#include "wx/sizer.h" //for positioning controls/wxBoxSizer
#include "wx/timer.h" //timer for updating status bar
#include "wx/textdlg.h" //for getting user text from OpenURL
#include "wx/notebook.h" //for wxNotebook and putting movies in pages
// Use some stuff that's not part of the current API, such as loading
// media from a URL, etc.
#define wxUSE_UNOFFICIALSTUFF 0
//Libraries for MSVC with optional backends
#ifdef _MSC_VER
#if wxUSE_DIRECTSHOW
#pragma comment(lib,"strmiids.lib")
#endif
#if wxUSE_QUICKTIME
#pragma comment(lib,"qtmlClient.lib")
#endif
#endif
// ----------------------------------------------------------------------------
// Bail out if the user doesn't want one of the
// things we need
// ----------------------------------------------------------------------------
#if !wxUSE_GUI
#error "This is a GUI sample"
#endif
#if !wxUSE_MEDIACTRL || !wxUSE_MENUS || !wxUSE_SLIDER || !wxUSE_TIMER || !wxUSE_NOTEBOOK
#error "menus, slider, mediactrl, notebook, and timers must all be enabled for this sample!"
#endif
// ============================================================================
// Declarations
// ============================================================================
// ----------------------------------------------------------------------------
// Enumurations
// ----------------------------------------------------------------------------
// IDs for the controls and the menu commands
enum
{
// menu items
wxID_LOOP = 1,
wxID_OPENFILESAMEPAGE,
wxID_OPENFILENEWPAGE,
wxID_OPENURLSAMEPAGE,
wxID_OPENURLNEWPAGE,
wxID_CLOSECURRENTPAGE,
wxID_PLAY,
wxID_PAUSE,
// wxID_STOP, [built-in to wxWidgets]
// wxID_ABOUT, [built-in to wxWidgets]
// wxID_EXIT, [built-in to wxWidgets]
// event id for our slider
wxID_SLIDER,
// event id for our notebook
wxID_NOTEBOOK,
// event id for our wxMediaCtrl
wxID_MEDIACTRL
};
// ----------------------------------------------------------------------------
// MyApp
// ----------------------------------------------------------------------------
class MyApp : public wxApp
{
public:
virtual bool OnInit();
};
// ----------------------------------------------------------------------------
// MyFrame
// ----------------------------------------------------------------------------
class MyFrame : public wxFrame
{
public:
// Ctor/Dtor
MyFrame(const wxString& title);
~MyFrame();
// Menu event handlers
void OnQuit(wxCommandEvent& event);
void OnAbout(wxCommandEvent& event);
void OnLoop(wxCommandEvent& event);
void OnOpenFileSamePage(wxCommandEvent& event);
void OnOpenFileNewPage(wxCommandEvent& event);
void OnOpenURLSamePage(wxCommandEvent& event);
void OnOpenURLNewPage(wxCommandEvent& event);
void OnCloseCurrentPage(wxCommandEvent& event);
void OnPlay(wxCommandEvent& event);
void OnPause(wxCommandEvent& event);
void OnStop(wxCommandEvent& event);
// Notebook event handlers
void OnPageChange(wxNotebookEvent& event);
private:
// Rebuild base status string (see Implementation)
void ResetStatus();
// Common open file code
void OpenFile(bool bNewPage);
void OpenURL(bool bNewPage);
// Get the media control and slider of current notebook page
wxMediaCtrl* GetCurrentMediaCtrl();
wxSlider* GetCurrentSlider();
class MyTimer* m_timer; //Timer to write info to status bar
wxString m_basestatus; //Base status string (see ResetStatus())
wxNotebook* m_notebook;
// So that mytimer can access MyFrame's members
friend class MyTimer;
};
// ----------------------------------------------------------------------------
// MyNotebookPage
// ----------------------------------------------------------------------------
class MyNotebookPage : public wxPanel
{
MyNotebookPage(wxNotebook* book);
// Slider event handlers
void OnSeek(wxCommandEvent& event);
// Media event handlers
void OnMediaFinished(wxMediaEvent& event);
public:
friend class MyFrame; //make MyFrame able to access private members
wxMediaCtrl* m_mediactrl; //Our media control
wxSlider* m_slider; //The slider below our media control
int m_nLoops; //Number of times media has looped
bool m_bLoop; //Whether we are looping or not
};
// ----------------------------------------------------------------------------
// MyTimer
// ----------------------------------------------------------------------------
class MyTimer : public wxTimer
{
public:
//Ctor
MyTimer(MyFrame* frame) {m_frame = frame;}
//Called each time the timer's timeout expires
void Notify();
MyFrame* m_frame; //The MyFrame
};
// ============================================================================
//
// Implementation
//
// ============================================================================
// ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
//
// [Functions]
//
// ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
// ----------------------------------------------------------------------------
// wxGetMediaStateText
//
// Converts a wxMediaCtrl state into something useful that we can display
// to the user
// ----------------------------------------------------------------------------
const wxChar* wxGetMediaStateText(int nState)
{
switch(nState)
{
case wxMEDIASTATE_PLAYING:
return wxT("Playing");
case wxMEDIASTATE_STOPPED:
return wxT("Stopped");
///case wxMEDIASTATE_PAUSED:
default:
return wxT("Paused");
}
}
// ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
//
// MyApp
//
// ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
// ----------------------------------------------------------------------------
// This sets up this wxApp as the global wxApp that gui calls in wxWidgets
// use. For example, if you were to be in windows and use a file dialog,
// wxWidgets would use wxTheApp->GetHInstance() which would get the instance
// handle of the application. These routines in wx _DO NOT_ check to see if
// the wxApp exists, and thus will crash the application if you try it.
//
// IMPLEMENT_APP does this, and also implements the platform-specific entry
// routine, such as main or WinMain(). Use IMPLEMENT_APP_NO_MAIN if you do
// not desire this behavior.
// ----------------------------------------------------------------------------
IMPLEMENT_APP(MyApp)
// ----------------------------------------------------------------------------
// MyApp::OnInit
//
// Where execution starts - akin to a main or WinMain.
// 1) Create the frame and show it to the user
// 2) return true specifying that we want execution to continue past OnInit
// ----------------------------------------------------------------------------
bool MyApp::OnInit()
{
MyFrame *frame = new MyFrame(_T("MediaPlayer wxWidgets Sample"));
frame->Show(true);
return true;
}
// ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
//
// MyFrame
//
// ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
// ----------------------------------------------------------------------------
// MyFrame Constructor
//
// 1) Create our menus
// 2) Create our notebook control and add it to the frame
// 3) Create our status bar
// 4) Connect our events
// 5) Start our timer
// ----------------------------------------------------------------------------
MyFrame::MyFrame(const wxString& title)
: wxFrame(NULL, wxID_ANY, title)
{
//
// Create Menus
//
wxMenu *menuFile = new wxMenu;
wxMenu *helpMenu = new wxMenu;
helpMenu->Append(wxID_ABOUT,
_T("&About...\tF1"),
_T("Show about dialog"));
menuFile->Append(wxID_OPENFILESAMEPAGE, _T("&Open File"),
_T("Open a File in the current notebook page"));
menuFile->Append(wxID_OPENFILENEWPAGE, _T("&Open File in a new page"),
_T("Open a File in a new notebook page"));
#if wxUSE_UNOFFICIALSTUFF
menuFile->Append(wxID_OPENURLSAMEPAGE, _T("&Open URL"),
_T("Open a URL in the current notebook page"));
menuFile->Append(wxID_OPENURLNEWPAGE, _T("&Open URL in a new page"),
_T("Open a URL in a new notebook page"));
#endif
menuFile->AppendSeparator();
menuFile->Append(wxID_CLOSECURRENTPAGE, _T("&Close Current Page"),
_T("Close current notebook page"));
menuFile->AppendSeparator();
menuFile->Append(wxID_PLAY, _T("&Play"), _T("Resume playback"));
menuFile->Append(wxID_PAUSE, _T("P&ause"), _T("Pause playback"));
menuFile->Append(wxID_STOP, _T("&Stop"), _T("Stop playback"));
menuFile->AppendSeparator();
menuFile->AppendCheckItem(wxID_LOOP,
_T("&Loop"),
_T("Loop Selected Media"));
menuFile->AppendSeparator();
menuFile->Append(wxID_EXIT,
_T("E&xit\tAlt-X"),
_T("Quit this program"));
wxMenuBar *menuBar = new wxMenuBar();
menuBar->Append(menuFile, _T("&File"));
menuBar->Append(helpMenu, _T("&Help"));
SetMenuBar(menuBar);
//
// Create our notebook - using wxNotebook is luckily pretty
// simple and self-explanatory in most cases
//
m_notebook = new wxNotebook(this, wxID_NOTEBOOK);
//
// Create our status bar
//
#if wxUSE_STATUSBAR
// create a status bar just for fun (by default with 1 pane only)
CreateStatusBar(1);
#endif // wxUSE_STATUSBAR
//
// Connect events.
//
// There are two ways in wxWidgets to use events -
// Message Maps and Connections.
//
// Message Maps are implemented by putting
// DECLARE_MESSAGE_MAP in your wxEvtHandler-derived
// class you want to use for events, such as MyFrame.
//
// Then after your class declaration you put
// BEGIN_EVENT_TABLE(MyFrame, wxFrame)
// EVT_XXX(XXX)...
// END_EVENT_TABLE()
//
// Where MyFrame is the class with the DECLARE_MESSAGE_MAP
// in it. EVT_XXX(XXX) are each of your handlers, such
// as EVT_MENU for menu events and the XXX inside
// is the parameters to the event macro - in the case
// of EVT_MENU the menu id and then the function to call.
//
// However, with wxEvtHandler::Connect you can avoid a
// global message map for your class and those annoying
// macros. You can also change the context in which
// the call the handler (more later).
//
// The downside is that due to the limitation that
// wxWidgets doesn't use templates in certain areas,
// You have to triple-cast the event function.
//
// There are five parameters to wxEvtHandler::Connect -
//
// The first is the id of the instance whose events
// you want to handle - i.e. a menu id for menus,
// a control id for controls (wxControl::GetId())
// and so on.
//
// The second is the event id. This is the same
// as the message maps (EVT_MENU) except prefixed
// with "wx" (wxEVT_MENU).
//
// The third is the function handler for the event -
// You need to cast it to the specific event handler
// type, then to a wxEventFunction, then to a
// wxObjectEventFunction - I.E.
// (wxObjectEventFunction)(wxEventFunction)
// (wxCommandEventFunction) &MyFrame::MyHandler
//
// The fourth is an optional userdata param -
// this is of historical relevance only and is
// there only for backwards compatability.
//
// The fifth is the context in which to call the
// handler - by default (this param is optional)
// this. For example in your event handler
// if you were to call "this->MyFunc()"
// it would literally do this->MyFunc. However,
// if you were to pass myHandler as the fifth
// parameter, for instance, you would _really_
// be calling myHandler->MyFunc, even though
// the compiler doesn't really know it.
//
//
// Menu events
//
this->Connect(wxID_EXIT, wxEVT_COMMAND_MENU_SELECTED,
(wxObjectEventFunction) (wxEventFunction)
(wxCommandEventFunction) &MyFrame::OnQuit);
this->Connect(wxID_ABOUT, wxEVT_COMMAND_MENU_SELECTED,
(wxObjectEventFunction) (wxEventFunction)
(wxCommandEventFunction) &MyFrame::OnAbout);
this->Connect(wxID_LOOP, wxEVT_COMMAND_MENU_SELECTED,
(wxObjectEventFunction) (wxEventFunction)
(wxCommandEventFunction) &MyFrame::OnLoop);
this->Connect(wxID_OPENFILENEWPAGE, wxEVT_COMMAND_MENU_SELECTED,
(wxObjectEventFunction) (wxEventFunction)
(wxCommandEventFunction) &MyFrame::OnOpenFileNewPage);
this->Connect(wxID_OPENFILESAMEPAGE, wxEVT_COMMAND_MENU_SELECTED,
(wxObjectEventFunction) (wxEventFunction)
(wxCommandEventFunction) &MyFrame::OnOpenFileSamePage);
this->Connect(wxID_OPENURLNEWPAGE, wxEVT_COMMAND_MENU_SELECTED,
(wxObjectEventFunction) (wxEventFunction)
(wxCommandEventFunction) &MyFrame::OnOpenURLNewPage);
this->Connect(wxID_OPENURLSAMEPAGE, wxEVT_COMMAND_MENU_SELECTED,
(wxObjectEventFunction) (wxEventFunction)
(wxCommandEventFunction) &MyFrame::OnOpenURLSamePage);
this->Connect(wxID_CLOSECURRENTPAGE, wxEVT_COMMAND_MENU_SELECTED,
(wxObjectEventFunction) (wxEventFunction)
(wxCommandEventFunction) &MyFrame::OnCloseCurrentPage);
this->Connect(wxID_PLAY, wxEVT_COMMAND_MENU_SELECTED,
(wxObjectEventFunction) (wxEventFunction)
(wxCommandEventFunction) &MyFrame::OnPlay);
this->Connect(wxID_PAUSE, wxEVT_COMMAND_MENU_SELECTED,
(wxObjectEventFunction) (wxEventFunction)
(wxCommandEventFunction) &MyFrame::OnPause);
this->Connect(wxID_STOP, wxEVT_COMMAND_MENU_SELECTED,
(wxObjectEventFunction) (wxEventFunction)
(wxCommandEventFunction) &MyFrame::OnStop);
//
// Notebook events
//
this->Connect(wxID_NOTEBOOK, wxEVT_COMMAND_NOTEBOOK_PAGE_CHANGED,
(wxObjectEventFunction) (wxEventFunction)
(wxNotebookEventFunction) &MyFrame::OnPageChange);
//
// End of Events
//
//
// Create a timer to update our status bar
//
m_timer = new MyTimer(this);
m_timer->Start(100);
}
// ----------------------------------------------------------------------------
// MyFrame Destructor
//
// 1) Deletes child objects implicitly
// 2) Delete our timer explicitly
// ----------------------------------------------------------------------------
MyFrame::~MyFrame()
{
delete m_timer;
}
// ----------------------------------------------------------------------------
// MyFrame::ResetStatus
//
// Here we just make a simple status string with some useful info about
// the media that we won't change later - such as the length of the media.
//
// We then append some other info that changes in MyTimer::Notify, then
// set the status bar to this text.
//
// In real applications, you'd want to find a better way to do this,
// such as static text controls (wxStaticText).
//
// We display info here in seconds (wxMediaCtrl uses milliseconds - that's why
// we divide by 1000).
//
// We also reset our loop counter here.
// ----------------------------------------------------------------------------
void MyFrame::ResetStatus()
{
wxMediaCtrl* currentMediaCtrl = GetCurrentMediaCtrl();
m_basestatus = wxString::Format(_T("Size(x,y):%i,%i ")
_T("Length(Seconds):%u Speed:%1.1fx"),
currentMediaCtrl->GetBestSize().x,
currentMediaCtrl->GetBestSize().y,
(unsigned)((currentMediaCtrl->Length() / 1000)),
currentMediaCtrl->GetPlaybackRate()
);
}
// ----------------------------------------------------------------------------
// MyFrame::GetCurrentMediaCtrl
//
// Obtains the media control of the current page, or NULL if there are no
// pages open
// ----------------------------------------------------------------------------
wxMediaCtrl* MyFrame::GetCurrentMediaCtrl()
{
wxASSERT(m_notebook->GetCurrentPage() != NULL);
return ((MyNotebookPage*)m_notebook->GetCurrentPage())->m_mediactrl;
}
// ----------------------------------------------------------------------------
// MyFrame::GetCurrentSlider
//
// Obtains the slider of the current page, or NULL if there are no
// pages open
// ----------------------------------------------------------------------------
wxSlider* MyFrame::GetCurrentSlider()
{
wxASSERT(m_notebook->GetCurrentPage() != NULL);
return ((MyNotebookPage*)m_notebook->GetCurrentPage())->m_slider;
}
// ----------------------------------------------------------------------------
// MyFrame::OnQuit
//
// Called from file->quit.
// Closes this application.
// ----------------------------------------------------------------------------
void MyFrame::OnQuit(wxCommandEvent& WXUNUSED(event))
{
// true is to force the frame to close
Close(true);
}
// ----------------------------------------------------------------------------
// MyFrame::OnAbout
//
// Called from help->about.
// Gets some info about this application.
// ----------------------------------------------------------------------------
void MyFrame::OnAbout(wxCommandEvent& WXUNUSED(event))
{
wxString msg;
msg.Printf( _T("This is a test of wxMediaCtrl.\n")
_T("Welcome to %s"), wxVERSION_STRING);
wxMessageBox(msg, _T("About wxMediaCtrl test"), wxOK | wxICON_INFORMATION, this);
}
// ----------------------------------------------------------------------------
// MyFrame::OnLoop
//
// Called from file->loop.
// Changes the state of whether we want to loop or not.
// ----------------------------------------------------------------------------
void MyFrame::OnLoop(wxCommandEvent& WXUNUSED(event))
{
if(!m_notebook->GetCurrentPage())
{
wxMessageBox(wxT("No files are currently open!"));
return;
}
((MyNotebookPage*)m_notebook->GetCurrentPage())->m_bLoop =
!((MyNotebookPage*)m_notebook->GetCurrentPage())->m_bLoop;
}
// ----------------------------------------------------------------------------
// MyFrame::OnOpenFileSamePage
//
// Called from file->openfile.
// Opens and plays a media file in the current notebook page
// ----------------------------------------------------------------------------
void MyFrame::OnOpenFileSamePage(wxCommandEvent& WXUNUSED(event))
{
OpenFile(false);
}
// ----------------------------------------------------------------------------
// MyFrame::OnOpenFileNewPage
//
// Called from file->openfileinnewpage.
// Opens and plays a media file in a new notebook page
// ----------------------------------------------------------------------------
void MyFrame::OnOpenFileNewPage(wxCommandEvent& WXUNUSED(event))
{
OpenFile(true);
}
// ----------------------------------------------------------------------------
// MyFrame::OpenFile
//
// Code to actually open the media file
//
// 1) Create file dialog and ask the user for input file
// 2) If the user didn't want anything, break out
// 3) Create a new page if the user wanted one or there isn't a current page
// 4) Load the media
// 5) Play the media
// 6) Reset the text on the status bar
// 7) Set the slider of the current page to accurately reflect media length
// ----------------------------------------------------------------------------
void MyFrame::OpenFile(bool bNewPage)
{
wxFileDialog fd(this);
if(fd.ShowModal() == wxID_OK)
{
if(bNewPage || !m_notebook->GetCurrentPage())
m_notebook->AddPage(new MyNotebookPage(m_notebook), fd.GetPath(), true);
if( !GetCurrentMediaCtrl()->Load(fd.GetPath()) )
wxMessageBox(wxT("Couldn't load file!"));
if( !GetCurrentMediaCtrl()->Play() )
wxMessageBox(wxT("Couldn't play movie!"));
ResetStatus();
GetCurrentSlider()->SetRange(0,
(int)(GetCurrentMediaCtrl()->Length() / 1000));
}
}
// ----------------------------------------------------------------------------
// MyFrame::OnOpenURLSamePage
//
// Called from file->openurl.
// Opens and plays a media file from a URL in the current notebook page
// ----------------------------------------------------------------------------
void MyFrame::OnOpenURLSamePage(wxCommandEvent& WXUNUSED(event))
{
OpenURL(false);
}
// ----------------------------------------------------------------------------
// MyFrame::OnOpenURLNewPage
//
// Called from file->openurlinnewpage.
// Opens and plays a media file from a URL in a new notebook page
// ----------------------------------------------------------------------------
void MyFrame::OnOpenURLNewPage(wxCommandEvent& WXUNUSED(event))
{
OpenURL(true);
}
// ----------------------------------------------------------------------------
// MyFrame::OpenURL
//
// Code to actually open the media file from a URL
//
// 1) Create text input dialog and ask the user for an input URL
// 2) If the user didn't want anything, break out
// 3) Create a new page if the user wanted one or there isn't a current page
// 4) Load the media
// 5) Play the media
// 6) Reset the text on the status bar
// 7) Set the slider of the current page to accurately reflect media length
// ----------------------------------------------------------------------------
void MyFrame::OpenURL(bool bNewPage)
{
wxString theURL = wxGetTextFromUser(wxT("Enter the URL that has the movie to play"));
if(!theURL.empty())
{
if(bNewPage || !m_notebook->GetCurrentPage())
m_notebook->AddPage(new MyNotebookPage(m_notebook), theURL, true);
if( !GetCurrentMediaCtrl()->Load(wxURI(theURL)) )
wxMessageBox(wxT("Couldn't load URL!"));
if( !GetCurrentMediaCtrl()->Play() )
wxMessageBox(wxT("Couldn't play movie!"));
ResetStatus();
GetCurrentSlider()->SetRange(0,
(int)(GetCurrentMediaCtrl()->Length() / 1000));
}
}
// ----------------------------------------------------------------------------
// MyFrame::OnCloseCurrentPage
//
// Called when the user wants to close the current notebook page
//
// 1) Get the current page number (wxControl::GetSelection)
// 2) If there is no current page, break out
// 3) Delete the current page
// ----------------------------------------------------------------------------
void MyFrame::OnCloseCurrentPage(wxCommandEvent& WXUNUSED(event))
{
int sel = m_notebook->GetSelection();
if (sel != wxNOT_FOUND)
{
m_notebook->DeletePage(sel);
}
}
// ----------------------------------------------------------------------------
// MyFrame::OnPlay
//
// Called from file->play.
// Resumes the media if it is paused or stopped.
// ----------------------------------------------------------------------------
void MyFrame::OnPlay(wxCommandEvent& WXUNUSED(event))
{
if(!m_notebook->GetCurrentPage())
{
wxMessageBox(wxT("No files are currently open!"));
return;
}
if( !GetCurrentMediaCtrl()->Play() )
wxMessageBox(wxT("Couldn't play movie!"));
}
// ----------------------------------------------------------------------------
// MyFrame::OnPause
//
// Called from file->pause.
// Pauses the media in-place.
// ----------------------------------------------------------------------------
void MyFrame::OnPause(wxCommandEvent& WXUNUSED(event))
{
if(!m_notebook->GetCurrentPage())
{
wxMessageBox(wxT("No files are currently open!"));
return;
}
if( !GetCurrentMediaCtrl()->Pause() )
wxMessageBox(wxT("Couldn't pause movie!"));
}
// ----------------------------------------------------------------------------
// MyFrame::OnStop
//
// Called from file->stop.
// Where it stops depends on whether you can seek in the
// media control or not - if you can it stops and seeks to the beginning,
// otherwise it will appear to be at the end - but it will start over again
// when Play() is called
// ----------------------------------------------------------------------------
void MyFrame::OnStop(wxCommandEvent& WXUNUSED(event))
{
if(!m_notebook->GetCurrentPage())
{
wxMessageBox(wxT("No files are currently open!"));
return;
}
if( !GetCurrentMediaCtrl()->Stop() )
wxMessageBox(wxT("Couldn't stop movie!"));
}
// ----------------------------------------------------------------------------
// MyFrame::OnCloseCurrentPage
//
// Called when the user wants to closes the current notebook page
// ----------------------------------------------------------------------------
void MyFrame::OnPageChange(wxNotebookEvent& WXUNUSED(event))
{
ResetStatus();
}
// ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
//
// MyTimer
//
// ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
// ----------------------------------------------------------------------------
// MyTimer::Notify
//
// 1) Update our slider with the position were are in in the media
// 2) Update our status bar with the base text from MyFrame::ResetStatus,
// append some non-static (changing) info to it, then set the
// status bar text to that result
// ----------------------------------------------------------------------------
void MyTimer::Notify()
{
if (!m_frame->m_notebook->GetCurrentPage()) return;
wxMediaCtrl* m_mediactrl = ((MyNotebookPage*)m_frame->m_notebook->GetCurrentPage())->m_mediactrl;
wxSlider* m_slider = ((MyNotebookPage*)m_frame->m_notebook->GetCurrentPage())->m_slider;
if (!m_mediactrl) return;
long lPosition = (long)( m_mediactrl->Tell() / 1000 );
m_slider->SetValue(lPosition);
#if wxUSE_STATUSBAR
m_frame->SetStatusText(wxString::Format(
_T("%s Pos:%u State:%s Loops:%i"),
m_frame->m_basestatus.c_str(),
(unsigned int)lPosition,
wxGetMediaStateText(m_mediactrl->GetState()),
((MyNotebookPage*)m_frame->m_notebook->GetCurrentPage())->m_nLoops
)
);
#endif
}
// ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
//
// MyNotebookPage
//
// ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
// ----------------------------------------------------------------------------
// MyNotebookPage Constructor
//
// Creates a media control and slider and adds it to this panel,
// along with some sizers for positioning
// ----------------------------------------------------------------------------
MyNotebookPage::MyNotebookPage(wxNotebook* theBook) :
wxPanel(theBook, wxID_ANY), m_nLoops(0), m_bLoop(false)
{
//
// Create and attach the first/main sizer
//
wxBoxSizer* vertsizer = new wxBoxSizer(wxVERTICAL);
this->SetSizer(vertsizer);
this->SetAutoLayout(true);
//
// Create our media control
//
m_mediactrl = new wxMediaCtrl(this, wxID_MEDIACTRL);
vertsizer->Add(m_mediactrl, 0, wxALIGN_CENTER_HORIZONTAL|wxALL, 5);
//
// Create our slider
//
m_slider = new wxSlider(this, wxID_SLIDER, 0, //init
0, //start
0, //end
wxDefaultPosition, wxDefaultSize,
wxSL_HORIZONTAL );
vertsizer->Add(m_slider, 0, wxALIGN_CENTER_HORIZONTAL|wxALL|wxEXPAND , 5);
//
// Create the second sizer which will position things
// vertically -
//
// -------Menu----------
// [m_mediactrl]
//
// [m_slider]
//
wxBoxSizer* horzsizer = new wxBoxSizer(wxHORIZONTAL);
vertsizer->Add(horzsizer, 0, wxALIGN_CENTER_HORIZONTAL|wxALL, 5);
//
// Slider events
//
this->Connect(wxID_SLIDER, wxEVT_COMMAND_SLIDER_UPDATED,
(wxObjectEventFunction) (wxEventFunction)
(wxCommandEventFunction) &MyNotebookPage::OnSeek);
//
// Media Control events
//
this->Connect(wxID_MEDIACTRL, wxEVT_MEDIA_FINISHED,
(wxObjectEventFunction) (wxEventFunction)
(wxMediaEventFunction) &MyNotebookPage::OnMediaFinished);
}
// ----------------------------------------------------------------------------
// MyNotebook::OnSeek
//
// Called from file->seek.
// Called when the user moves the slider -
// seeks to a position within the media
// ----------------------------------------------------------------------------
void MyNotebookPage::OnSeek(wxCommandEvent& WXUNUSED(event))
{
if( m_mediactrl->Seek(
m_slider->GetValue() * 1000
) == wxInvalidOffset )
wxMessageBox(wxT("Couldn't seek in movie!"));
}
// ----------------------------------------------------------------------------
// OnMediaFinished
//
// Called when the media stops playing.
// Here we loop it if the user wants to (has been selected from file menu)
// ----------------------------------------------------------------------------
void MyNotebookPage::OnMediaFinished(wxMediaEvent& WXUNUSED(event))
{
if(m_bLoop)
{
if ( !m_mediactrl->Play() )
wxMessageBox(wxT("Couldn't loop movie!"));
else
++m_nLoops;
}
}
//
// End of MediaPlayer sample
//
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