comment/explain a lot
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@30461 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
Ryan Norton
parent
39c5bef057
commit
d0b9eaa209
@ -17,15 +17,12 @@
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// headers
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// ----------------------------------------------------------------------------
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// For compilers that support precompilation, includes "wx/wx.h".
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#include "wx/wxprec.h"
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#ifdef __BORLANDC__
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#pragma hdrstop
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#endif
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// for all others, include the necessary headers (this file is usually all you
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// need because it includes almost all "standard" wxWidgets headers)
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#ifndef WX_PRECOMP
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#include "wx/wx.h"
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#endif
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@ -34,18 +31,12 @@
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// resources
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// ----------------------------------------------------------------------------
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// the application icon (under Windows and OS/2 it is in resources and even
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// though we could still include the XPM here it would be unused)
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#if !defined(__WXMSW__) && !defined(__WXPM__)
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// #include "../sample.xpm"
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#endif
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#include "wx/mediactrl.h"
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#include "wx/filedlg.h"
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#include "wx/slider.h"
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#include "wx/sizer.h"
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#include "wx/timer.h"
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#include "wx/mediactrl.h" //for wxMediaCtrl
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#include "wx/filedlg.h" //for opening files from OpenFile
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#include "wx/slider.h" //for a slider for seeking within media
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#include "wx/sizer.h" //for positioning controls/wxBoxSizer
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#include "wx/timer.h" //timer for updating status bar
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#include "wx/textdlg.h" //for getting user text from OpenURL
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#if !wxUSE_MEDIACTRL
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@ -53,25 +44,15 @@
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#endif
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// ----------------------------------------------------------------------------
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// private classes
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// Declarations
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// ----------------------------------------------------------------------------
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// Define a new application type, each program should derive a class from wxApp
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class MyApp : public wxApp
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{
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public:
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// override base class virtuals
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// ----------------------------
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// this one is called on application startup and is a good place for the app
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// initialization (doing it here and not in the ctor allows to have an error
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// return: if OnInit() returns false, the application terminates)
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virtual bool OnInit();
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};
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// Define a new frame type: this is going to be our main frame
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class MyFrame : public wxFrame
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{
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public:
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@ -96,19 +77,9 @@ public:
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void OnMediaFinished(wxMediaEvent& event);
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private:
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void ResetStatus()
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{
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m_basestatus = wxString::Format(_T("Size(x,y):%i,%i Length(Seconds):%u Speed:%1.1fx"),
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m_movie->GetBestSize().x,
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m_movie->GetBestSize().y,
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m_movie->GetDuration() / 1000,
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m_movie->GetPlaybackRate()
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);
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m_slider->SetRange(0, m_movie->GetDuration() / 1000);
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}
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wxMediaCtrl* m_movie;
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void ResetStatus();
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wxMediaCtrl* m_mediactrl;
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wxSlider* m_slider;
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wxBoxSizer* m_sizer;
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class MyTimer* m_timer;
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@ -121,6 +92,32 @@ private:
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DECLARE_EVENT_TABLE()
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};
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//
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//ResetStatus
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//-----------
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//Here we just make a simple status string
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//with some useful info about the media
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//We display info here in seconds (wxMediaCtrl
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//uses milliseconds - that's why we divide by 1000)
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//
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void MyFrame::ResetStatus()
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{
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m_basestatus = wxString::Format(_T("Size(x,y):%i,%i Length(Seconds):%u Speed:%1.1fx"),
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m_mediactrl->GetBestSize().x,
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m_mediactrl->GetBestSize().y,
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m_mediactrl->GetDuration() / 1000,
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m_mediactrl->GetPlaybackRate()
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);
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m_slider->SetRange(0, m_mediactrl->GetDuration() / 1000);
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}
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//
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//wxGetMediaStateText
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//-------------------
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//Converts a wxMediaCtrl state into something
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//useful that we can display
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//
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const wxChar* wxGetMediaStateText(int nState)
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{
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switch(nState)
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@ -140,16 +137,22 @@ class MyTimer : public wxTimer
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public:
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MyTimer(MyFrame* frame) {m_frame = frame;}
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//
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//Notify
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//-----------
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//Updates the main frame's status bar with the current
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//position within the media and state the media is in
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//
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void Notify()
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{
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long lPosition = m_frame->m_movie->GetPosition() / 1000;
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long lPosition = m_frame->m_mediactrl->GetPosition() / 1000;
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m_frame->m_slider->SetValue(lPosition);
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m_frame->SetStatusText(wxString::Format(_T("%s Pos:%u State:%s"),
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m_frame->m_basestatus.c_str(),
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lPosition,
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wxGetMediaStateText(m_frame->m_movie->GetState())
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wxGetMediaStateText(m_frame->m_mediactrl->GetState())
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)
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);
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@ -168,30 +171,27 @@ enum
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{
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// menu items
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Minimal_Quit = wxID_EXIT,
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// it is important for the id corresponding to the "About" command to have
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// this standard value as otherwise it won't be handled properly under Mac
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// (where it is special and put into the "Apple" menu)
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Minimal_About = wxID_ABOUT,
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Minimal_Slider = 1,
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Minimal_Media,
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Minimal_Loop,
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Minimal_OpenFile,
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Minimal_OpenURL,
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Minimal_Play,
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Minimal_Pause,
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Minimal_Stop
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Minimal_Stop,
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Minimal_About = wxID_ABOUT,
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// id for our slider
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Minimal_Slider = 1,
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// id for our wxMediaCtrl
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Minimal_Media
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};
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// ----------------------------------------------------------------------------
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// event tables and other macros for wxWidgets
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// ----------------------------------------------------------------------------
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// the event tables connect the wxWidgets events with the functions (event
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// handlers) which process them. It can be also done at run-time, but for the
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// simple menu events like this the static method is much simpler.
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BEGIN_EVENT_TABLE(MyFrame, wxFrame)
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//Menu events
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EVT_MENU(Minimal_Quit, MyFrame::OnQuit)
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EVT_MENU(Minimal_About, MyFrame::OnAbout)
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EVT_MENU(Minimal_Loop, MyFrame::OnLoop)
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@ -200,15 +200,15 @@ BEGIN_EVENT_TABLE(MyFrame, wxFrame)
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EVT_MENU(Minimal_Play, MyFrame::OnPlay)
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EVT_MENU(Minimal_Pause, MyFrame::OnPause)
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EVT_MENU(Minimal_Stop, MyFrame::OnStop)
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//Slider events
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EVT_SLIDER(Minimal_Slider, MyFrame::OnSeek)
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//wxMediaCtrl events
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EVT_MEDIA_FINISHED(Minimal_Media, MyFrame::OnMediaFinished)
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END_EVENT_TABLE()
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// Create a new application object: this macro will allow wxWidgets to create
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// the application object during program execution (it's better than using a
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// static object for many reasons) and also implements the accessor function
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// wxGetApp() which will return the reference of the right type (i.e. MyApp and
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// not wxApp)
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//main/WinMain()
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IMPLEMENT_APP(MyApp)
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// ============================================================================
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@ -216,22 +216,15 @@ IMPLEMENT_APP(MyApp)
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// ============================================================================
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// ----------------------------------------------------------------------------
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// the application class
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// MyApp
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// ----------------------------------------------------------------------------
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// 'Main program' equivalent: the program execution "starts" here
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bool MyApp::OnInit()
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{
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// create the main application window
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MyFrame *frame = new MyFrame(_T("Minimal wxWidgets App"));
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// and show it (the frames, unlike simple controls, are not shown when
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// created initially)
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frame->Show(true);
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// success: wxApp::OnRun() will be called which will enter the main message
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// loop and the application will run. If we returned false here, the
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// application would exit immediately.
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return true;
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}
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@ -239,18 +232,20 @@ bool MyApp::OnInit()
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// main frame
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// ----------------------------------------------------------------------------
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// frame constructor
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//
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//MyFrame
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//-------
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//Creates our menus and controls
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//
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MyFrame::MyFrame(const wxString& title)
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: wxFrame(NULL, wxID_ANY, title), m_timer(NULL)
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{
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// set the frame icon
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// SetIcon(wxICON(sample));
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//
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// Create Menus
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//
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#if wxUSE_MENUS
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// create a menu bar
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wxMenu *menuFile = new wxMenu;
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// the "About" item should be in the help menu
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wxMenu *helpMenu = new wxMenu;
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helpMenu->Append(Minimal_About, _T("&About...\tF1"), _T("Show about dialog"));
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@ -265,24 +260,31 @@ MyFrame::MyFrame(const wxString& title)
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menuFile->AppendSeparator();
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menuFile->Append(Minimal_Quit, _T("E&xit\tAlt-X"), _T("Quit this program"));
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// now append the freshly created menu to the menu bar...
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wxMenuBar *menuBar = new wxMenuBar();
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menuBar->Append(menuFile, _T("&File"));
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menuBar->Append(helpMenu, _T("&Help"));
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// ... and attach this menu bar to the frame
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SetMenuBar(menuBar);
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#endif // wxUSE_MENUS
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//
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// Create and attach the first/main sizer
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//
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m_sizer = new wxBoxSizer(wxVERTICAL);
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this->SetSizer(m_sizer);
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this->SetAutoLayout(true);
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// m_sizer->SetSizeHints(this);
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// m_sizer->Fit(this);
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m_movie = new wxMediaCtrl(this, Minimal_Media, wxT(""));
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m_sizer->Add(m_movie, 0, wxALIGN_CENTER_HORIZONTAL|wxALL, 5);
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//
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// Create our media control
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//
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m_mediactrl = new wxMediaCtrl(this, Minimal_Media, wxT(""));
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m_sizer->Add(m_mediactrl, 0, wxALIGN_CENTER_HORIZONTAL|wxALL, 5);
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//
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// Create our slider
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//
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m_slider = new wxSlider(this, Minimal_Slider, 0, //init
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0, //start
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@ -291,36 +293,72 @@ MyFrame::MyFrame(const wxString& title)
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wxSL_HORIZONTAL );
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m_sizer->Add(m_slider, 0, wxALIGN_CENTER_HORIZONTAL|wxALL|wxEXPAND , 5);
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//
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// Create the second sizer which will position things
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// vertically -
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//
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// -------Menu----------
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// [m_mediactrl]
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//
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// [m_slider]
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//
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wxBoxSizer* horzsizer = new wxBoxSizer(wxHORIZONTAL);
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m_sizer->Add(horzsizer, 0, wxALIGN_CENTER_HORIZONTAL|wxALL, 5);
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//
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// We arn't looping initially
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//
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m_bLoop = false;
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m_timer = new MyTimer(this);
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m_timer->Start(100);
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//
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// Create our status bar
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//
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#if wxUSE_STATUSBAR
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// create a status bar just for fun (by default with 1 pane only)
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CreateStatusBar(1);
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ResetStatus();
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SetStatusText(m_basestatus);
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#endif // wxUSE_STATUSBAR
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//
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// Create a timer to update our status bar
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//
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m_timer = new MyTimer(this);
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m_timer->Start(100);
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}
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//
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//~MyFrame
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//-------
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//Deletes child objects implicitly and our timer explicitly
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//
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MyFrame::~MyFrame()
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{
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if (m_timer)
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delete m_timer;
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delete m_timer;
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}
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// event handlers
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//
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//OnQuit
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//-------
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//Called from file->quit.
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//Closes this application.
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//
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void MyFrame::OnQuit(wxCommandEvent& WXUNUSED(event))
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{
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// true is to force the frame to close
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Close(true);
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}
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//
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//OnAbout
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//-------
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//Called from help->about.
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//Gets some info about this application.
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//
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void MyFrame::OnAbout(wxCommandEvent& WXUNUSED(event))
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{
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wxString msg;
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@ -330,74 +368,128 @@ void MyFrame::OnAbout(wxCommandEvent& WXUNUSED(event))
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wxMessageBox(msg, _T("About wxMediaCtrl test"), wxOK | wxICON_INFORMATION, this);
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}
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//
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//OnLoop
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//-------
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//Called from file->loop.
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//Changes the state of whether we want to loop or not.
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//
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void MyFrame::OnLoop(wxCommandEvent& WXUNUSED(event))
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{
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m_bLoop = !m_bLoop;
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}
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//
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//OnOpenFile
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//-------
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//Called from file->openfile.
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//Opens and plays a media file
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//
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void MyFrame::OnOpenFile(wxCommandEvent& WXUNUSED(event))
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{
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wxFileDialog fd(this);
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if(fd.ShowModal() == wxID_OK)
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{
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if( !m_movie->Load(fd.GetPath()) )
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if( !m_mediactrl->Load(fd.GetPath()) )
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wxMessageBox(wxT("Couldn't load file!"));
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if( !m_movie->Play() )
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if( !m_mediactrl->Play() )
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wxMessageBox(wxT("Couldn't play movie!"));
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ResetStatus();
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}
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}
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#include "wx/textdlg.h"
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//
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//OnOpenURL
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//-------
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//Called from file->openurl.
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//Opens a URL.
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//Windows DirectShow only.
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//
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void MyFrame::OnOpenURL(wxCommandEvent& WXUNUSED(event))
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{
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wxString theURL = wxGetTextFromUser(wxT("Enter the URL that has the movie to play"));
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#if defined(__WXMSW__) && wxUSE_DIRECTSHOW
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if(!theURL.empty())
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{
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if( !m_movie->Load(wxURI(theURL)) )
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if( !m_mediactrl->Load(wxURI(theURL)) )
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wxMessageBox(wxT("Couldn't load URL!"));
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if( !m_movie->Play() )
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if( !m_mediactrl->Play() )
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wxMessageBox(wxT("Couldn't play movie!"));
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ResetStatus();
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}
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#else
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wxMessageBox(wxT("Not supported!"));
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#endif
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}
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//
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//OnPlay
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//-------
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//Called from file->play.
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//Resumes the media if it is paused or stopped.
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//
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void MyFrame::OnPlay(wxCommandEvent& WXUNUSED(event))
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{
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if( !m_movie->Play() )
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if( !m_mediactrl->Play() )
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wxMessageBox(wxT("Couldn't play movie!"));
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}
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//
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//OnPause
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//-------
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//Called from file->pause.
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//Pauses the media in-place.
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//
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void MyFrame::OnPause(wxCommandEvent& WXUNUSED(event))
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{
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if( !m_movie->Pause() )
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if( !m_mediactrl->Pause() )
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wxMessageBox(wxT("Couldn't pause movie!"));
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}
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//
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//OnStop
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//-------
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//Called from file->stop.
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//Note that where the media stops is undefined -
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//it could stop at the end or beginning.
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//
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void MyFrame::OnStop(wxCommandEvent& WXUNUSED(event))
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{
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if( !m_movie->Stop() )
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if( !m_mediactrl->Stop() )
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wxMessageBox(wxT("Couldn't stop movie!"));
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}
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//
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//OnSeek
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//-------
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//Called from file->seek.
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//Called when the user moves the slider -
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//seeks to a position within the media
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//
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void MyFrame::OnSeek(wxCommandEvent& WXUNUSED(event))
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{
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if( !m_movie->SetPosition( m_slider->GetValue() * 1000 ) )
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if( !m_mediactrl->SetPosition( m_slider->GetValue() * 1000 ) )
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wxMessageBox(wxT("Couldn't seek in movie!"));
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}
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//
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//OnMediaFinished
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//-------
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//Called when the media stops playing.
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//Here we loop it if the user wants to (has been selected from file menu)
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//
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void MyFrame::OnMediaFinished(wxMediaEvent& WXUNUSED(event))
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{
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if(m_bLoop)
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{
|
||||
if ( !m_movie->SetPosition(0) || !m_movie->Play() )
|
||||
if ( !m_mediactrl->SetPosition(0) || !m_mediactrl->Play() )
|
||||
wxMessageBox(wxT("Couldn't seek or play to loop movie!"));
|
||||
}
|
||||
}
|
||||
Loading…
Reference in New Issue
Block a user