textctrl.cpp

很牛的GUI源码wxWidgets-2.8.0.zip 可在多种平台下运行.

/////////////////////////////////////////////////////////////////////////////
// Name:        src/mac/carbon/textctrl.cpp
// Purpose:     wxTextCtrl
// Author:      Stefan Csomor
// Modified by: Ryan Norton (MLTE GetLineLength and GetLineText)
// Created:     1998-01-01
// RCS-ID:      $Id: textctrl.cpp,v 1.208.2.1 2006/12/11 16:36:14 RD Exp $
// Copyright:   (c) Stefan Csomor
// Licence:     wxWindows licence
/////////////////////////////////////////////////////////////////////////////

#include "wx/wxprec.h"

#if wxUSE_TEXTCTRL

#include "wx/textctrl.h"

#ifndef WX_PRECOMP
    #include "wx/intl.h"
    #include "wx/app.h"
    #include "wx/utils.h"
    #include "wx/dc.h"
    #include "wx/button.h"
    #include "wx/menu.h"
    #include "wx/settings.h"
    #include "wx/msgdlg.h"
    #include "wx/toplevel.h"
#endif

#ifdef __DARWIN__
    #include <sys/types.h>
    #include <sys/stat.h>
#else
    #include <stat.h>
#endif

#if wxUSE_STD_IOSTREAM
    #if wxUSE_IOSTREAMH
        #include <fstream.h>
    #else
        #include <fstream>
    #endif
#endif

#include "wx/filefn.h"
#include "wx/sysopt.h"

#if defined(__BORLANDC__) && !defined(__WIN32__)
    #include <alloc.h>
#elif !defined(__MWERKS__) && !defined(__GNUWIN32) && !defined(__DARWIN__)
    #include <malloc.h>
#endif

#ifndef __DARWIN__
#include <Scrap.h>
#endif

#ifndef __DARWIN__
#include <MacTextEditor.h>
#include <ATSUnicode.h>
#include <TextCommon.h>
#include <TextEncodingConverter.h>
#endif

#include "wx/mac/uma.h"

#ifndef __WXMAC_OSX__
enum
{
    kTXNVisibilityTag = 'visb' // set the visibility state of the object
};
#endif


class wxMacFunctor
{
public :
    wxMacFunctor() {}
    virtual ~wxMacFunctor() {}

    virtual void* operator()() = 0 ;

    static void* CallBackProc( void *param )
    {
        wxMacFunctor* f = (wxMacFunctor*) param ;
        void *result = (*f)() ;
        return result ;
    }
} ;

template<typename classtype, typename param1type>

class wxMacObjectFunctor1 : public wxMacFunctor
{
    typedef void (classtype::*function)( param1type p1 ) ;
    typedef void (classtype::*ref_function)( const param1type& p1 ) ;
public :
    wxMacObjectFunctor1( classtype *obj , function f , param1type p1 ) :
        wxMacFunctor()
    {
        m_object = obj ;
        m_function = f ;
        m_param1 = p1 ;
    }

    wxMacObjectFunctor1( classtype *obj , ref_function f , param1type p1 ) :
        wxMacFunctor()
    {
        m_object = obj ;
        m_refFunction = f ;
        m_param1 = p1 ;
    }

    virtual ~wxMacObjectFunctor1() {}

    virtual void* operator()()
    {
        (m_object->*m_function)( m_param1 ) ;
        return NULL ;
    }

private :
    classtype* m_object ;
    param1type m_param1 ;
    union
    {
        function m_function ;
        ref_function m_refFunction ;
    } ;
} ;

template<typename classtype, typename param1type>
void* wxMacMPRemoteCall( classtype *object , void (classtype::*function)( param1type p1 ) , param1type p1 )
{
    wxMacObjectFunctor1<classtype, param1type> params(object, function, p1) ;
    void *result =
        MPRemoteCall( wxMacFunctor::CallBackProc , &params , kMPOwningProcessRemoteContext ) ;
    return result ;
}

template<typename classtype, typename param1type>
void* wxMacMPRemoteCall( classtype *object , void (classtype::*function)( const param1type& p1 ) , param1type p1 )
{
    wxMacObjectFunctor1<classtype,param1type> params(object, function, p1) ;
    void *result =
        MPRemoteCall( wxMacFunctor::CallBackProc , &params , kMPOwningProcessRemoteContext ) ;
    return result ;
}

template<typename classtype, typename param1type>
void* wxMacMPRemoteGUICall( classtype *object , void (classtype::*function)( param1type p1 ) , param1type p1 )
{
    wxMutexGuiLeave() ;
    void *result = wxMacMPRemoteCall( object , function , p1 ) ;
    wxMutexGuiEnter() ;
    return result ;
}

template<typename classtype, typename param1type>
void* wxMacMPRemoteGUICall( classtype *object , void (classtype::*function)( const param1type& p1 ) , param1type p1 )
{
    wxMutexGuiLeave() ;
    void *result = wxMacMPRemoteCall( object , function , p1 ) ;
    wxMutexGuiEnter() ;
    return result ;
}

// common interface for all implementations
class wxMacTextControl : public wxMacControl
{
public :
    wxMacTextControl( wxTextCtrl *peer ) ;
    virtual ~wxMacTextControl() ;

    virtual wxString GetStringValue() const = 0 ;
    virtual void SetStringValue( const wxString &val ) = 0 ;
    virtual void SetSelection( long from, long to ) = 0 ;
    virtual void GetSelection( long* from, long* to ) const = 0 ;
    virtual void WriteText( const wxString& str ) = 0 ;

    virtual void SetStyle( long start, long end, const wxTextAttr& style ) ;
    virtual void Copy() ;
    virtual void Cut() ;
    virtual void Paste() ;
    virtual bool CanPaste() const ;
    virtual void SetEditable( bool editable ) ;
    virtual wxTextPos GetLastPosition() const ;
    virtual void Replace( long from, long to, const wxString &str ) ;
    virtual void Remove( long from, long to ) ;


    virtual bool HasOwnContextMenu() const
    { return false ; }

    virtual bool SetupCursor( const wxPoint& pt )
    { return false ; }

    virtual void Clear() ;
    virtual bool CanUndo() const;
    virtual void Undo() ;
    virtual bool CanRedo() const;
    virtual void Redo() ;
    virtual int GetNumberOfLines() const ;
    virtual long XYToPosition(long x, long y) const;
    virtual bool PositionToXY(long pos, long *x, long *y) const ;
    virtual void ShowPosition(long WXUNUSED(pos)) ;
    virtual int GetLineLength(long lineNo) const ;
    virtual wxString GetLineText(long lineNo) const ;
    virtual void CheckSpelling(bool check) { }

#ifndef __WXMAC_OSX__
    virtual void            MacControlUserPaneDrawProc(wxInt16 part) = 0 ;
    virtual wxInt16         MacControlUserPaneHitTestProc(wxInt16 x, wxInt16 y) = 0 ;
    virtual wxInt16         MacControlUserPaneTrackingProc(wxInt16 x, wxInt16 y, void* actionProc) = 0 ;
    virtual void            MacControlUserPaneIdleProc() = 0 ;
    virtual wxInt16         MacControlUserPaneKeyDownProc(wxInt16 keyCode, wxInt16 charCode, wxInt16 modifiers) = 0 ;
    virtual void            MacControlUserPaneActivateProc(bool activating) = 0 ;
    virtual wxInt16         MacControlUserPaneFocusProc(wxInt16 action) = 0 ;
    virtual void            MacControlUserPaneBackgroundProc(void* info) = 0 ;
#endif
} ;

// common parts for implementations based on MLTE

class wxMacMLTEControl : public wxMacTextControl
{
public :
    wxMacMLTEControl( wxTextCtrl *peer ) ;

    virtual wxString GetStringValue() const ;
    virtual void SetStringValue( const wxString &str ) ;

    static TXNFrameOptions FrameOptionsFromWXStyle( long wxStyle ) ;

    void AdjustCreationAttributes( const wxColour& background, bool visible ) ;

    virtual void SetFont( const wxFont & font, const wxColour& foreground, long windowStyle ) ;
    virtual void SetBackground( const wxBrush &brush ) ;
    virtual void SetStyle( long start, long end, const wxTextAttr& style ) ;
    virtual void Copy() ;
    virtual void Cut() ;
    virtual void Paste() ;
    virtual bool CanPaste() const ;
    virtual void SetEditable( bool editable ) ;
    virtual wxTextPos GetLastPosition() const ;
    virtual void Replace( long from, long to, const wxString &str ) ;
    virtual void Remove( long from, long to ) ;
    virtual void GetSelection( long* from, long* to ) const ;
    virtual void SetSelection( long from, long to ) ;

    virtual void WriteText( const wxString& str ) ;

    virtual bool HasOwnContextMenu() const
    {
#if MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_4
        if ( UMAGetSystemVersion() >= 0x1040 )
        {
            TXNCommandEventSupportOptions options ;
            TXNGetCommandEventSupport( m_txn , & options ) ;
            return options & kTXNSupportEditCommandProcessing ;
        }
#endif

        return false ;
    }

    virtual void CheckSpelling(bool check)
    {
#if MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_4
    TXNSetSpellCheckAsYouType( m_txn, (Boolean) check );
#endif
    }
    virtual void Clear() ;

    virtual bool CanUndo() const ;
    virtual void Undo() ;
    virtual bool CanRedo()  const;
    virtual void Redo() ;
    virtual int GetNumberOfLines() const ;
    virtual long XYToPosition(long x, long y) const ;
    virtual bool PositionToXY(long pos, long *x, long *y) const ;
    virtual void ShowPosition( long pos ) ;
    virtual int GetLineLength(long lineNo) const ;
    virtual wxString GetLineText(long lineNo) const ;

    void SetTXNData( const wxString& st , TXNOffset start , TXNOffset end ) ;
    TXNObject GetTXNObject() { return m_txn ; }

protected :
    void TXNSetAttribute( const wxTextAttr& style , long from , long to ) ;

    TXNObject m_txn ;
} ;

#if TARGET_API_MAC_OSX

// implementation available under OSX

#if MAC_OS_X_VERSION_MAX_ALLOWED > MAC_OS_X_VERSION_10_2

class wxMacMLTEHIViewControl : public wxMacMLTEControl
{
public :
    wxMacMLTEHIViewControl( wxTextCtrl *wxPeer,
                             const wxString& str,
                             const wxPoint& pos,
                             const wxSize& size, long style ) ;
    virtual ~wxMacMLTEHIViewControl() ;

    virtual OSStatus SetFocus( ControlFocusPart focusPart ) ;
    virtual bool HasFocus() const ;
    virtual void SetBackground( const wxBrush &brush) ;

protected :
    HIViewRef m_scrollView ;
    HIViewRef m_textView ;
    EventHandlerRef m_textEventHandlerRef ;
};

#endif

class wxMacUnicodeTextControl : public wxMacTextControl
{
public :
    wxMacUnicodeTextControl( wxTextCtrl *wxPeer,
                             const wxString& str,
                             const wxPoint& pos,
                             const wxSize& size, long style ) ;
    virtual ~wxMacUnicodeTextControl();

    virtual void VisibilityChanged(bool shown);
    virtual wxString GetStringValue() const ;
    virtual void SetStringValue( const wxString &str) ;
    virtual void Copy();
    virtual void Cut();
    virtual void Paste();
    virtual bool CanPaste() const;
    virtual void SetEditable(bool editable) ;
    virtual void GetSelection( long* from, long* to) const ;
    virtual void SetSelection( long from , long to ) ;
    virtual void WriteText(const wxString& str) ;

protected :
    // contains the tag for the content (is different for password and non-password controls)
    OSType m_valueTag ;

    // as the selection tag only works correctly when the control has the focus we have to mirror the
    // intended value
    EventHandlerRef m_focusHandlerRef ;
public :
    ControlEditTextSelectionRec m_selection ;
};

#endif

// 'classic' MLTE implementation

class wxMacMLTEClassicControl : public wxMacMLTEControl
{
public :
    wxMacMLTEClassicControl( wxTextCtrl *wxPeer,
                             const wxString& str,
                             const wxPoint& pos,
                             const wxSize& size, long style ) ;
    virtual ~wxMacMLTEClassicControl() ;

    virtual void VisibilityChanged(bool shown) ;
    virtual void SuperChangedPosition() ;

    virtual void            MacControlUserPaneDrawProc(wxInt16 part) ;
    virtual wxInt16         MacControlUserPaneHitTestProc(wxInt16 x, wxInt16 y) ;
    virtual wxInt16         MacControlUserPaneTrackingProc(wxInt16 x, wxInt16 y, void* actionProc) ;
    virtual void            MacControlUserPaneIdleProc() ;
    virtual wxInt16         MacControlUserPaneKeyDownProc(wxInt16 keyCode, wxInt16 charCode, wxInt16 modifiers) ;
    virtual void            MacControlUserPaneActivateProc(bool activating) ;
    virtual wxInt16         MacControlUserPaneFocusProc(wxInt16 action) ;
    virtual void            MacControlUserPaneBackgroundProc(void* info) ;

    virtual bool SetupCursor( const wxPoint& WXUNUSED(pt) )
    {
        MacControlUserPaneIdleProc();
        return true;
    }

    virtual void            SetRect( Rect *r ) ;

protected :
    OSStatus                 DoCreate();

    void                    MacUpdatePosition() ;
    void                    MacActivatePaneText(bool setActive) ;
    void                    MacFocusPaneText(bool setFocus) ;
    void                    MacSetObjectVisibility(bool vis) ;

private :
    TXNFrameID              m_txnFrameID ;
    GrafPtr                 m_txnPort ;
    WindowRef               m_txnWindow ;
    // bounds of the control as we last did set the txn frames
    Rect                    m_txnControlBounds ;
    Rect                    m_txnVisBounds ;

#ifdef __WXMAC_OSX__
    static pascal void TXNScrollActionProc( ControlRef controlRef , ControlPartCode partCode ) ;
    static pascal void TXNScrollInfoProc(
        SInt32 iValue, SInt32 iMaximumValue,
        TXNScrollBarOrientation iScrollBarOrientation, SInt32 iRefCon ) ;

    ControlRef              m_sbHorizontal ;
    SInt32                  m_lastHorizontalValue ;
    ControlRef              m_sbVertical ;
    SInt32                  m_lastVerticalValue ;
#endif
};


IMPLEMENT_DYNAMIC_CLASS(wxTextCtrl, wxTextCtrlBase)

BEGIN_EVENT_TABLE(wxTextCtrl, wxTextCtrlBase)
    EVT_ERASE_BACKGROUND( wxTextCtrl::OnEraseBackground )
    EVT_DROP_FILES(wxTextCtrl::OnDropFiles)
    EVT_CHAR(wxTextCtrl::OnChar)
    EVT_MENU(wxID_CUT, wxTextCtrl::OnCut)
    EVT_MENU(wxID_COPY, wxTextCtrl::OnCopy)
    EVT_MENU(wxID_PASTE, wxTextCtrl::OnPaste)
    EVT_MENU(wxID_UNDO, wxTextCtrl::OnUndo)
    EVT_MENU(wxID_REDO, wxTextCtrl::OnRedo)
    EVT_MENU(wxID_CLEAR, wxTextCtrl::OnDelete)
    EVT_MENU(wxID_SELECTALL, wxTextCtrl::OnSelectAll)

    EVT_CONTEXT_MENU(wxTextCtrl::OnContextMenu)

    EVT_UPDATE_UI(wxID_CUT, wxTextCtrl::OnUpdateCut)
    EVT_UPDATE_UI(wxID_COPY, wxTextCtrl::OnUpdateCopy)
    EVT_UPDATE_UI(wxID_PASTE, wxTextCtrl::OnUpdatePaste)
    EVT_UPDATE_UI(wxID_UNDO, wxTextCtrl::OnUpdateUndo)
    EVT_UPDATE_UI(wxID_REDO, wxTextCtrl::OnUpdateRedo)
    EVT_UPDATE_UI(wxID_CLEAR, wxTextCtrl::OnUpdateDelete)
    EVT_UPDATE_UI(wxID_SELECTALL, wxTextCtrl::OnUpdateSelectAll)
END_EVENT_TABLE()


void wxTextCtrl::Init()
{
    m_editable = true ;
    m_dirty = false;

    m_maxLength = 0;
    m_privateContextMenu = NULL;
    m_triggerOnSetValue = true ;
}

wxTextCtrl::~wxTextCtrl()
{
    delete m_privateContextMenu;
}

bool wxTextCtrl::Create( wxWindow *parent,
    wxWindowID id,
    const wxString& str,
    const wxPoint& pos,
    const wxSize& size,
    long style,
    const wxValidator& validator,
    const wxString& name )
{
    m_macIsUserPane = false ;
    m_editable = true ;

    if ( ! (style & wxNO_BORDER) )
        style = (style & ~wxBORDER_MASK) | wxSUNKEN_BORDER ;

    if ( !wxTextCtrlBase::Create( parent, id, pos, size, style & ~(wxHSCROLL | wxVSCROLL), validator, name ) )
        return false;

    if ( m_windowStyle & wxTE_MULTILINE )
    {
        // always turn on this style for multi-line controls
        m_windowStyle |= wxTE_PROCESS_ENTER;
        style |= wxTE_PROCESS_ENTER ;
    }

    CreatePeer( str, pos, size, style );

    MacPostControlCreate(pos, size) ;

    // only now the embedding is correct and we can do a positioning update