git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@41020 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
		
			
				
	
	
		
			423 lines
		
	
	
		
			16 KiB
		
	
	
	
		
			C++
		
	
	
	
	
	
			
		
		
	
	
			423 lines
		
	
	
		
			16 KiB
		
	
	
	
		
			C++
		
	
	
	
	
	
///////////////////////////////////////////////////////////////////////////////
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// Name:        wx/mediactrl.h
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// Purpose:     wxMediaCtrl class
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// Author:      Ryan Norton <wxprojects@comcast.net>
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// Modified by:
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// Created:     11/07/04
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// RCS-ID:      $Id$
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// Copyright:   (c) Ryan Norton
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// Licence:     wxWindows licence
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///////////////////////////////////////////////////////////////////////////////
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// ============================================================================
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// Definitions
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// ============================================================================
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// ----------------------------------------------------------------------------
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// Header guard
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// ----------------------------------------------------------------------------
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#ifndef _WX_MEDIACTRL_H_
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#define _WX_MEDIACTRL_H_
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// ----------------------------------------------------------------------------
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// Pre-compiled header stuff
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// ----------------------------------------------------------------------------
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#include "wx/defs.h"
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// ----------------------------------------------------------------------------
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// Compilation guard
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// ----------------------------------------------------------------------------
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#if wxUSE_MEDIACTRL
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// ----------------------------------------------------------------------------
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// Includes
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// ----------------------------------------------------------------------------
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#include "wx/control.h"
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#include "wx/uri.h"
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// ============================================================================
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// Declarations
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// ============================================================================
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// ----------------------------------------------------------------------------
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//
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// Enumerations
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//
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// ----------------------------------------------------------------------------
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enum wxMediaState
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{
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    wxMEDIASTATE_STOPPED,
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    wxMEDIASTATE_PAUSED,
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    wxMEDIASTATE_PLAYING
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};
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enum wxMediaCtrlPlayerControls
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{
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    wxMEDIACTRLPLAYERCONTROLS_NONE           =   0,
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    //Step controls like fastfoward, step one frame etc.
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    wxMEDIACTRLPLAYERCONTROLS_STEP           =   1 << 0,
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    //Volume controls like the speaker icon, volume slider, etc.
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    wxMEDIACTRLPLAYERCONTROLS_VOLUME         =   1 << 1,
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    wxMEDIACTRLPLAYERCONTROLS_DEFAULT        =
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                    wxMEDIACTRLPLAYERCONTROLS_STEP |
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                    wxMEDIACTRLPLAYERCONTROLS_VOLUME
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};
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#define wxMEDIABACKEND_DIRECTSHOW   wxT("wxAMMediaBackend")
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#define wxMEDIABACKEND_MCI          wxT("wxMCIMediaBackend")
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#define wxMEDIABACKEND_QUICKTIME    wxT("wxQTMediaBackend")
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#define wxMEDIABACKEND_GSTREAMER    wxT("wxGStreamerMediaBackend")
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#define wxMEDIABACKEND_REALPLAYER   wxT("wxRealPlayerMediaBackend")
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#define wxMEDIABACKEND_WMP10        wxT("wxWMP10MediaBackend")
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// ----------------------------------------------------------------------------
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//
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// wxMediaEvent
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//
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// ----------------------------------------------------------------------------
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class WXDLLIMPEXP_MEDIA wxMediaEvent : public wxNotifyEvent
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{
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public:
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    // ------------------------------------------------------------------------
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    // wxMediaEvent Constructor
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    //
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    // Normal constructor, much the same as wxNotifyEvent
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    // ------------------------------------------------------------------------
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    wxMediaEvent(wxEventType commandType = wxEVT_NULL, int winid = 0)
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        : wxNotifyEvent(commandType, winid)
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    {                                       }
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    // ------------------------------------------------------------------------
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    // wxMediaEvent Copy Constructor
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    //
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    // Normal copy constructor, much the same as wxNotifyEvent
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    // ------------------------------------------------------------------------
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    wxMediaEvent(const wxMediaEvent &clone)
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            : wxNotifyEvent(clone)
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    {                                       }
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    // ------------------------------------------------------------------------
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    // wxMediaEvent::Clone
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    //
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    // Allocates a copy of this object.
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    // Required for wxEvtHandler::AddPendingEvent
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    // ------------------------------------------------------------------------
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    virtual wxEvent *Clone() const
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    {   return new wxMediaEvent(*this);     }
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    // Put this class on wxWidget's RTTI table
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    DECLARE_DYNAMIC_CLASS(wxMediaEvent)
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};
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// ----------------------------------------------------------------------------
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//
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// wxMediaCtrl
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//
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// ----------------------------------------------------------------------------
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class WXDLLIMPEXP_MEDIA wxMediaCtrl : public wxControl
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{
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public:
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    wxMediaCtrl() : m_imp(NULL), m_bLoaded(false)
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    {                                                                   }
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    wxMediaCtrl(wxWindow* parent, wxWindowID winid,
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                const wxString& fileName = wxEmptyString,
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                const wxPoint& pos = wxDefaultPosition,
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                const wxSize& size = wxDefaultSize,
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                long style = 0,
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                const wxString& szBackend = wxEmptyString,
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                const wxValidator& validator = wxDefaultValidator,
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                const wxString& name = wxT("mediaCtrl"))
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                : m_imp(NULL), m_bLoaded(false)
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    {   Create(parent, winid, fileName, pos, size, style,
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               szBackend, validator, name);                             }
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    wxMediaCtrl(wxWindow* parent, wxWindowID winid,
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                const wxURI& location,
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                const wxPoint& pos = wxDefaultPosition,
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                const wxSize& size = wxDefaultSize,
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                long style = 0,
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                const wxString& szBackend = wxEmptyString,
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                const wxValidator& validator = wxDefaultValidator,
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                const wxString& name = wxT("mediaCtrl"))
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                : m_imp(NULL), m_bLoaded(false)
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    {   Create(parent, winid, location, pos, size, style,
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               szBackend, validator, name);                             }
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    virtual ~wxMediaCtrl();
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    bool Create(wxWindow* parent, wxWindowID winid,
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                const wxString& fileName = wxEmptyString,
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                const wxPoint& pos = wxDefaultPosition,
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                const wxSize& size = wxDefaultSize,
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                long style = 0,
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                const wxString& szBackend = wxEmptyString,
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                const wxValidator& validator = wxDefaultValidator,
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                const wxString& name = wxT("mediaCtrl"));
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    bool Create(wxWindow* parent, wxWindowID winid,
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                const wxURI& location,
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                const wxPoint& pos = wxDefaultPosition,
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                const wxSize& size = wxDefaultSize,
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                long style = 0,
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                const wxString& szBackend = wxEmptyString,
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                const wxValidator& validator = wxDefaultValidator,
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                const wxString& name = wxT("mediaCtrl"));
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    bool DoCreate(wxClassInfo* instance,
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                wxWindow* parent, wxWindowID winid,
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                const wxPoint& pos = wxDefaultPosition,
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                const wxSize& size = wxDefaultSize,
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                long style = 0,
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                const wxValidator& validator = wxDefaultValidator,
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                const wxString& name = wxT("mediaCtrl"));
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    bool Play();
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    bool Pause();
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    bool Stop();
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    bool Load(const wxString& fileName);
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    wxMediaState GetState();
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    wxFileOffset Seek(wxFileOffset where, wxSeekMode mode = wxFromStart);
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    wxFileOffset Tell(); //FIXME: This should be const
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    wxFileOffset Length(); //FIXME: This should be const
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#if wxABI_VERSION >= 20601 /* 2.6.1+ only */
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    double GetPlaybackRate();           //All but MCI & GStreamer
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    bool SetPlaybackRate(double dRate); //All but MCI & GStreamer
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#endif
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#if wxABI_VERSION >= 20602 /* 2.6.2+ only */
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    bool Load(const wxURI& location);
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    bool Load(const wxURI& location, const wxURI& proxy);
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    wxFileOffset GetDownloadProgress(); // DirectShow only
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    wxFileOffset GetDownloadTotal();    // DirectShow only
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    double GetVolume();
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    bool   SetVolume(double dVolume);
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    bool    ShowPlayerControls(
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        wxMediaCtrlPlayerControls flags = wxMEDIACTRLPLAYERCONTROLS_DEFAULT);
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    //helpers for the wxPython people
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    bool LoadURI(const wxString& fileName)
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    {   return Load(wxURI(fileName));       }
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    bool LoadURIWithProxy(const wxString& fileName, const wxString& proxy)
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    {   return Load(wxURI(fileName), wxURI(proxy));       }
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#endif
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protected:
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    static wxClassInfo* NextBackend();
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    void OnMediaFinished(wxMediaEvent& evt);
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    virtual void DoMoveWindow(int x, int y, int w, int h);
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    wxSize DoGetBestSize() const;
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    //FIXME:  This is nasty... find a better way to work around
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    //inheritance issues
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#if defined(__WXMAC__)
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    virtual void MacVisibilityChanged();
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#endif
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#if defined(__WXMAC__) || defined(__WXCOCOA__)
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    friend class wxQTMediaBackend;
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#endif
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    class wxMediaBackend* m_imp;
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    bool m_bLoaded;
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    DECLARE_DYNAMIC_CLASS(wxMediaCtrl)
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};
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// ----------------------------------------------------------------------------
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//
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// wxMediaBackend
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//
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// Derive from this and use standard wxWidgets RTTI
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// (DECLARE_DYNAMIC_CLASS and IMPLEMENT_CLASS) to make a backend
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// for wxMediaCtrl.  Backends are searched alphabetically -
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// the one with the earliest letter is tried first.
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//
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// Note that this is currently not API or ABI compatable -
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// so statically link or make the client compile on-site.
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//
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// ----------------------------------------------------------------------------
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class WXDLLIMPEXP_MEDIA wxMediaBackend : public wxObject
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{
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public:
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    wxMediaBackend()
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    {                                   }
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    virtual ~wxMediaBackend();
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    virtual bool CreateControl(wxControl* WXUNUSED(ctrl),
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                               wxWindow* WXUNUSED(parent),
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                               wxWindowID WXUNUSED(winid),
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                               const wxPoint& WXUNUSED(pos),
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                               const wxSize& WXUNUSED(size),
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                               long WXUNUSED(style),
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                               const wxValidator& WXUNUSED(validator),
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                               const wxString& WXUNUSED(name))
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    {   return false;                   }
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    virtual bool Play()
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    {   return false;                   }
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    virtual bool Pause()
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    {   return false;                   }
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    virtual bool Stop()
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    {   return false;                   }
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    virtual bool Load(const wxString& WXUNUSED(fileName))
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    {   return false;                   }
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    virtual bool Load(const wxURI& WXUNUSED(location))
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    {   return false;                   }
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    virtual bool SetPosition(wxLongLong WXUNUSED(where))
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    {   return 0;                       }
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    virtual wxLongLong GetPosition()
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    {   return 0;                       }
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    virtual wxLongLong GetDuration()
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    {   return 0;                       }
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    virtual void Move(int WXUNUSED(x), int WXUNUSED(y),
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                      int WXUNUSED(w), int WXUNUSED(h))
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    {                                   }
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    virtual wxSize GetVideoSize() const
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    {   return wxSize(0,0);             }
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    virtual double GetPlaybackRate()
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    {   return 0.0;                     }
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    virtual bool SetPlaybackRate(double WXUNUSED(dRate))
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    {   return false;                   }
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    virtual wxMediaState GetState()
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    {   return wxMEDIASTATE_STOPPED;    }
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    virtual double GetVolume()
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    {   return 0.0;                     }
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    virtual bool SetVolume(double WXUNUSED(dVolume))
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    {   return false;                   }
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    virtual bool Load(const wxURI& WXUNUSED(location),
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                      const wxURI& WXUNUSED(proxy))
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    {   return false;                   }
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    virtual bool   ShowPlayerControls(
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                    wxMediaCtrlPlayerControls WXUNUSED(flags))
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    {   return false;                   }
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    virtual bool   IsInterfaceShown()
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    {   return false;                   }
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    virtual wxLongLong GetDownloadProgress()
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    {    return 0;                      }
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    virtual wxLongLong GetDownloadTotal()
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    {    return 0;                      }
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    virtual void MacVisibilityChanged()
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    {                                   }
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    virtual void RESERVED9() {}
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    DECLARE_DYNAMIC_CLASS(wxMediaBackend)
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};
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//Event ID to give to our events
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#define wxMEDIA_FINISHED_ID    13000
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#define wxMEDIA_STOP_ID    13001
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//Define our event types - we need to call DEFINE_EVENT_TYPE(EVT) later
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DECLARE_EXPORTED_EVENT_TYPE(WXDLLIMPEXP_MEDIA, wxEVT_MEDIA_FINISHED, wxMEDIA_FINISHED_ID)
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DECLARE_EXPORTED_EVENT_TYPE(WXDLLIMPEXP_MEDIA, wxEVT_MEDIA_STOP,     wxMEDIA_STOP_ID)
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//Function type(s) our events need
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typedef void (wxEvtHandler::*wxMediaEventFunction)(wxMediaEvent&);
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#define wxMediaEventHandler(func) \
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    (wxObjectEventFunction)(wxEventFunction)wxStaticCastEvent(wxMediaEventFunction, &func)
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//Macro for usage with message maps
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#define EVT_MEDIA_FINISHED(winid, fn) DECLARE_EVENT_TABLE_ENTRY( wxEVT_MEDIA_FINISHED, winid, wxID_ANY, wxMediaEventHandler(fn), (wxObject *) NULL ),
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#define EVT_MEDIA_STOP(winid, fn) DECLARE_EVENT_TABLE_ENTRY( wxEVT_MEDIA_STOP, winid, wxID_ANY, wxMediaEventHandler(fn), (wxObject *) NULL ),
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#if wxABI_VERSION >= 20602 /* 2.6.2+ only */
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#   define wxMEDIA_LOADED_ID      13002
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    DECLARE_EXPORTED_EVENT_TYPE(WXDLLIMPEXP_MEDIA, wxEVT_MEDIA_LOADED,     wxMEDIA_LOADED_ID)
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#   define EVT_MEDIA_LOADED(winid, fn) DECLARE_EVENT_TABLE_ENTRY( wxEVT_MEDIA_LOADED, winid, wxID_ANY, wxMediaEventHandler(fn), (wxObject *) NULL ),
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#endif
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#if wxABI_VERSION >= 20603 /* 2.6.3+ only */
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#   define wxMEDIA_STATECHANGED_ID      13003
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#   define wxMEDIA_PLAY_ID      13004
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#   define wxMEDIA_PAUSE_ID      13005
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    DECLARE_EXPORTED_EVENT_TYPE(WXDLLIMPEXP_MEDIA, wxEVT_MEDIA_STATECHANGED,     wxMEDIA_STATECHANGED_ID)
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    DECLARE_EXPORTED_EVENT_TYPE(WXDLLIMPEXP_MEDIA, wxEVT_MEDIA_PLAY,     wxMEDIA_PLAY_ID)
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    DECLARE_EXPORTED_EVENT_TYPE(WXDLLIMPEXP_MEDIA, wxEVT_MEDIA_PAUSE,     wxMEDIA_PAUSE_ID)
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#   define EVT_MEDIA_STATECHANGED(winid, fn) DECLARE_EVENT_TABLE_ENTRY( wxEVT_MEDIA_STATECHANGED, winid, wxID_ANY, wxMediaEventHandler(fn), (wxObject *) NULL ),
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#   define EVT_MEDIA_PLAY(winid, fn) DECLARE_EVENT_TABLE_ENTRY( wxEVT_MEDIA_PLAY, winid, wxID_ANY, wxMediaEventHandler(fn), (wxObject *) NULL ),
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#   define EVT_MEDIA_PAUSE(winid, fn) DECLARE_EVENT_TABLE_ENTRY( wxEVT_MEDIA_PAUSE, winid, wxID_ANY, wxMediaEventHandler(fn), (wxObject *) NULL ),
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#endif
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// ----------------------------------------------------------------------------
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// common backend base class used by many other backends
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// ----------------------------------------------------------------------------
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class WXDLLIMPEXP_MEDIA wxMediaBackendCommonBase : public wxMediaBackend
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{
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public:
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    // add a pending wxMediaEvent of the given type
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    void QueueEvent(wxEventType evtType);
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    // notify that the movie playback is finished
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    void QueueFinishEvent()
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    {
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#if wxABI_VERSION >= 20603 /* 2.6.3+ only */
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        QueueEvent(wxEVT_MEDIA_STATECHANGED);
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#endif
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        QueueEvent(wxEVT_MEDIA_FINISHED);
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    }
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    // send the stop event and return true if it hasn't been vetoed
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    bool SendStopEvent();
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    // Queue pause event
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    void QueuePlayEvent();
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    // Queue pause event
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    void QueuePauseEvent();
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    // Queue stop event (no veto)
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    void QueueStopEvent();
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protected:
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    // call this when the movie size has changed but not because it has just
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    // been loaded (in this case, call NotifyMovieLoaded() below)
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    void NotifyMovieSizeChanged();
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    // call this when the movie is fully loaded
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    void NotifyMovieLoaded();
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    wxMediaCtrl *m_ctrl;      // parent control
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};
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// ----------------------------------------------------------------------------
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// End compilation gaurd
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// ----------------------------------------------------------------------------
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#endif // wxUSE_MEDIACTRL
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// ----------------------------------------------------------------------------
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// End header guard and header itself
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// ----------------------------------------------------------------------------
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#endif // _WX_MEDIACTRL_H_
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