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added, implemented, documented wxTE_RICH2 and wxTextCtrl::GetRange()

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git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@13475 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
Vadim Zeitlin
2002-01-09 01:32:02 +00:00
parent 88633ca7c6
commit a5aa80862c
6 changed files with 236 additions and 186 deletions
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382
src/msw/textctrl.cpp
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@@ -95,6 +95,11 @@
#define SF_UNICODE 0x0010
#endif
// Watcom C++ doesn't define this
#ifndef SCF_ALL
#define SCF_ALL 0x0004
#endif
// ----------------------------------------------------------------------------
// private functions
// ----------------------------------------------------------------------------
@@ -111,31 +116,24 @@ DWORD CALLBACK wxRichEditStreamIn(DWORD dwCookie, BYTE *buf, LONG cb, LONG *pcb)
#if wxUSE_RICHEDIT
// this module initializes RichEdit DLL if needed
// this module initializes RichEdit DLL(s) if needed
class wxRichEditModule : public wxModule
{
public:
virtual bool OnInit();
virtual void OnExit();
// get the version currently loaded, -1 if none
static int GetLoadedVersion() { return ms_verRichEdit; }
// load the richedit DLL of at least of required version
static bool Load(int version = 1);
private:
// the handle to richedit DLL and the version of the DLL loaded
static HINSTANCE ms_hRichEdit;
// the DLL version loaded or -1 if none
static int ms_verRichEdit;
// the handles to richedit 1.0 and 2.0 (or 3.0) DLLs
static HINSTANCE ms_hRichEdit[2];
DECLARE_DYNAMIC_CLASS(wxRichEditModule)
};
HINSTANCE wxRichEditModule::ms_hRichEdit = (HINSTANCE)NULL;
int wxRichEditModule::ms_verRichEdit = -1;
HINSTANCE wxRichEditModule::ms_hRichEdit[2] = { NULL, NULL };
IMPLEMENT_DYNAMIC_CLASS(wxRichEditModule, wxModule)
@@ -255,28 +253,63 @@ bool wxTextCtrl::Create(wxWindow *parent, wxWindowID id,
wxString windowClass = wxT("EDIT");
#if wxUSE_RICHEDIT
if ( m_windowStyle & wxTE_AUTO_URL )
{
// automatic URL detection only works in RichEdit 2.0+
m_windowStyle |= wxTE_RICH2;
}
if ( m_windowStyle & wxTE_RICH2 )
{
// using richedit 2.0 implies using wxTE_RICH
m_windowStyle |= wxTE_RICH;
}
// we need to load the richedit DLL before creating the rich edit control
if ( m_windowStyle & wxTE_RICH )
{
static bool s_errorGiven = FALSE; // MT-FIXME
static bool s_errorGiven = FALSE;// MT-FIXME
// Which version do we need? Use 1.0 by default because it is much more
// like the the standard EDIT or 2.0 if explicitly requested, but use
// only 2.0 in Unicode mode as 1.0 doesn't support Unicode at all
//
// TODO: RichEdit 3.0 is apparently capable of emulating RichEdit 1.0
// (and thus EDIT) much better than RichEdit 2.0 so we probably
// should use 3.0 if available as it is the best of both worlds -
// but as I can't test it right now I don't do it (VZ)
#if wxUSE_UNICODE
const int verRichEdit = 2;
#else // !wxUSE_UNICODE
int verRichEdit = m_windowStyle & wxTE_RICH2 ? 2 : 1;
#endif // wxUSE_UNICODE/!wxUSE_UNICODE
// only give the error msg once if the DLL can't be loaded
if ( !s_errorGiven )
{
// first try to load the RichEdit DLL (will do nothing if already
// done)
if ( !wxRichEditModule::Load() )
// try to load the RichEdit DLL (will do nothing if already done)
if ( !wxRichEditModule::Load(verRichEdit) )
{
wxLogError(_("Impossible to create a rich edit control, using simple text control instead. Please reinstall riched32.dll"));
#if !wxUSE_UNICODE
// try another version?
verRichEdit = 3 - verRichEdit; // 1 <-> 2
s_errorGiven = TRUE;
if ( !wxRichEditModule::Load(verRichEdit) )
#endif // wxUSE_UNICODE
{
wxLogError(_("Impossible to create a rich edit control, using simple text control instead. Please reinstall riched32.dll"));
s_errorGiven = TRUE;
}
}
}
// have we managed to load any richedit version?
if ( !s_errorGiven )
{
msStyle |= ES_AUTOVSCROLL;
m_verRichEdit = wxRichEditModule::GetLoadedVersion();
m_verRichEdit = verRichEdit;
if ( m_verRichEdit == 1 )
{
windowClass = wxT("RICHEDIT");
@@ -379,49 +412,77 @@ void wxTextCtrl::AdoptAttributesFromHWND()
wxString wxTextCtrl::GetValue() const
{
// we can't use wxGetWindowText() (i.e. WM_GETTEXT internally) for
// retrieving more than 64Kb under Win9x
// range 0..-1 is special for GetRange() and means to retrieve all text
return GetRange(0, -1);
}
wxString wxTextCtrl::GetRange(long from, long to) const
{
wxString str;
if ( from >= to && to != -1 )
{
// nothing to retrieve
return str;
}
#if wxUSE_RICHEDIT
if ( IsRich() )
{
wxString str;
int len = GetWindowTextLength(GetHwnd());
if ( len )
if ( len > from )
{
// alloc one extra WORD as needed by the control
wxChar *p = str.GetWriteBuf(++len);
TEXTRANGE textRange;
textRange.chrg.cpMin = 0;
textRange.chrg.cpMax = -1;
textRange.chrg.cpMin = from;
textRange.chrg.cpMax = to == -1 ? len : to;
textRange.lpstrText = p;
(void)SendMessage(GetHwnd(), EM_GETTEXTRANGE, 0, (LPARAM)&textRange);
// believe it or not, but EM_GETTEXTRANGE uses just CR ('\r') for
// the newlines which is neither Unix nor Windows style (Win95 with
// riched20.dll shows this behaviour) - convert it to something
// reasonable
for ( ; *p; p++ )
if ( m_verRichEdit > 1 )
{
if ( *p == _T('\r') )
*p = _T('\n');
// RichEdit 2.0 uses just CR ('\r') for the newlines which is
// neither Unix nor Windows style - convert it to something
// reasonable
for ( ; *p; p++ )
{
if ( *p == _T('\r') )
*p = _T('\n');
}
}
str.UngetWriteBuf();
if ( m_verRichEdit == 1 )
{
// convert to the canonical form - see comment below
str = wxTextFile::Translate(str, wxTextFileType_Unix);
}
}
//else: no text at all, leave the string empty
return str;
}
else
#endif // wxUSE_RICHEDIT
{
// retrieve all text
str = wxGetWindowText(GetHWND());
// WM_GETTEXT uses standard DOS CR+LF (\r\n) convention - convert to the
// same one as above for consitency
wxString str = wxGetWindowText(GetHWND());
// need only a range?
if ( from < to )
{
str = str.Mid(from, to - from);
}
return wxTextFile::Translate(str, wxTextFileType_Unix);
// WM_GETTEXT uses standard DOS CR+LF (\r\n) convention - convert to the
// canonical one (same one as above) for consistency with the other kinds
// of controls and, more importantly, with the other ports
str = wxTextFile::Translate(str, wxTextFileType_Unix);
}
return str;
}
void wxTextCtrl::SetValue(const wxString& value)
@@ -524,7 +585,11 @@ bool wxTextCtrl::StreamIn(const wxString& value, wxFontEncoding encoding)
void wxTextCtrl::WriteText(const wxString& value)
{
wxString valueDos = wxTextFile::Translate(value, wxTextFileType_Dos);
wxString valueDos;
if ( m_windowStyle & wxTE_MULTILINE )
valueDos = wxTextFile::Translate(value, wxTextFileType_Dos);
else
valueDos = value;
#if wxUSE_RICHEDIT
// there are several complications with the rich edit controls here
@@ -598,8 +663,7 @@ void wxTextCtrl::Copy()
{
if (CanCopy())
{
HWND hWnd = GetHwnd();
SendMessage(hWnd, WM_COPY, 0, 0L);
::SendMessage(GetHwnd(), WM_COPY, 0, 0L);
}
}
@@ -607,8 +671,7 @@ void wxTextCtrl::Cut()
{
if (CanCut())
{
HWND hWnd = GetHwnd();
SendMessage(hWnd, WM_CUT, 0, 0L);
::SendMessage(GetHwnd(), WM_CUT, 0, 0L);
}
}
@@ -616,8 +679,7 @@ void wxTextCtrl::Paste()
{
if (CanPaste())
{
HWND hWnd = GetHwnd();
SendMessage(hWnd, WM_PASTE, 0, 0L);
::SendMessage(GetHwnd(), WM_PASTE, 0, 0L);
}
}
@@ -625,16 +687,13 @@ bool wxTextCtrl::CanCopy() const
{
// Can copy if there's a selection
long from, to;
GetSelection(& from, & to);
return (from != to) ;
GetSelection(&from, &to);
return from != to;
}
bool wxTextCtrl::CanCut() const
{
// Can cut if there's a selection
long from, to;
GetSelection(& from, & to);
return (from != to) && (IsEditable());
return CanCopy() && IsEditable();
}
bool wxTextCtrl::CanPaste() const
@@ -673,12 +732,25 @@ void wxTextCtrl::SetEditable(bool editable)
void wxTextCtrl::SetInsertionPoint(long pos)
{
SetSelection(pos, pos);
DoSetSelection(pos, pos);
}
void wxTextCtrl::SetInsertionPointEnd()
{
long pos = GetLastPosition();
long pos;
#if wxUSE_RICHEDIT
if ( m_verRichEdit == 1 )
{
// we don't have to waste time calling GetLastPosition() in this case
pos = -1;
}
else // !RichEdit 1.0
#endif // wxUSE_RICHEDIT
{
pos = GetLastPosition();
}
SetInsertionPoint(pos);
}
@@ -701,19 +773,12 @@ long wxTextCtrl::GetInsertionPoint() const
long wxTextCtrl::GetLastPosition() const
{
HWND hWnd = GetHwnd();
int numLines = GetNumberOfLines();
long posStartLastLine = XYToPosition(0, numLines - 1);
// Will always return a number > 0 (according to docs)
int noLines = (int)SendMessage(hWnd, EM_GETLINECOUNT, (WPARAM)0, (LPARAM)0L);
long lenLastLine = GetLengthOfLineContainingPos(posStartLastLine);
// This gets the char index for the _beginning_ of the last line
int charIndex = (int)SendMessage(hWnd, EM_LINEINDEX, (WPARAM)(noLines-1), (LPARAM)0L);
// Get number of characters in the last line. We'll add this to the character
// index for the last line, 1st position.
int lineLength = (int)SendMessage(hWnd, EM_LINELENGTH, (WPARAM)charIndex, (LPARAM)0L);
return (long)(charIndex + lineLength);
return posStartLastLine + lenLastLine;
}
// If the return values from and to are the same, there is no
@@ -740,39 +805,11 @@ void wxTextCtrl::GetSelection(long* from, long* to) const
}
}
wxString wxTextCtrl::GetStringSelection() const
{
// the base class version works correctly for the rich text controls
// because there the lines are terminated with just '\r' which means that
// the string length is not changed in the result of the translations doen
// in GetValue() but for the normal ones when we replace "\r\n" with '\n'
// we break the indices
#if wxUSE_RICHEDIT
if ( IsRich() )
return wxTextCtrlBase::GetStringSelection();
#endif // wxUSE_RICHEDIT
long from, to;
GetSelection(&from, &to);
wxString str;
if ( from < to )
{
str = wxGetWindowText(GetHWND()).Mid(from, to - from);
// and now that we have the correct selection, convert it to the
// correct format
str = wxTextFile::Translate(str, wxTextFileType_Unix);
}
return str;
}
bool wxTextCtrl::IsEditable() const
{
long style = ::GetWindowLong(GetHwnd(), GWL_STYLE);
return ((style & ES_READONLY) == 0);
return (style & ES_READONLY) == 0;
}
// ----------------------------------------------------------------------------
@@ -780,11 +817,6 @@ bool wxTextCtrl::IsEditable() const
// ----------------------------------------------------------------------------
void wxTextCtrl::SetSelection(long from, long to)
{
DoSetSelection(from, to);
}
void wxTextCtrl::DoSetSelection(long from, long to, bool scrollCaret)
{
// if from and to are both -1, it means (in wxWindows) that all text should
// be selected - translate into Windows convention
@@ -794,6 +826,11 @@ void wxTextCtrl::DoSetSelection(long from, long to, bool scrollCaret)
to = -1;
}
DoSetSelection(from, to);
}
void wxTextCtrl::DoSetSelection(long from, long to, bool scrollCaret)
{
HWND hWnd = GetHwnd();
#ifdef __WIN32__
@@ -813,41 +850,7 @@ void wxTextCtrl::DoSetSelection(long from, long to, bool scrollCaret)
if ( scrollCaret )
{
#if wxUSE_RICHEDIT
// EM_SCROLLCARET doesn't work for me with the richedit controls
// unless it has focus although I don't see any mention of it in the
// docs - this is the only workaround I found. Of course it's not
// perfect as it adds the dummy focus set/kill events but it's still
// better than nothing
HWND hwndFocusOld;
if ( IsRich() )
{
hwndFocusOld = ::GetFocus();
if ( hwndFocusOld == GetHwnd() )
{
// don't change focus
hwndFocusOld = 0;
}
if ( hwndFocusOld )
{
::SetFocus(GetHwnd());
}
}
else // not rich
{
hwndFocusOld = 0;
}
#endif // wxUSE_RICHEDIT
SendMessage(hWnd, EM_SCROLLCARET, (WPARAM)0, (LPARAM)0);
#if wxUSE_RICHEDIT
if ( hwndFocusOld )
{
::SetFocus(hwndFocusOld);
}
#endif // wxUSE_RICHEDIT
}
#else // Win16
// WPARAM is 0: selection is scrolled into view
@@ -893,7 +896,7 @@ bool wxTextCtrl::LoadFile(const wxString& file)
bool wxTextCtrl::IsModified() const
{
return (SendMessage(GetHwnd(), EM_GETMODIFY, 0, 0) != 0);
return SendMessage(GetHwnd(), EM_GETMODIFY, 0, 0) != 0;
}
// Makes 'unmodified'
@@ -909,11 +912,10 @@ int wxTextCtrl::GetNumberOfLines() const
long wxTextCtrl::XYToPosition(long x, long y) const
{
HWND hWnd = GetHwnd();
// This gets the char index for the _beginning_ of this line
int charIndex = (int)SendMessage(hWnd, EM_LINEINDEX, (WPARAM)y, (LPARAM)0);
return (long)(x + charIndex);
long charIndex = SendMessage(GetHwnd(), EM_LINEINDEX, (WPARAM)y, (LPARAM)0);
return charIndex + x;
}
bool wxTextCtrl::PositionToXY(long pos, long *x, long *y) const
@@ -921,15 +923,17 @@ bool wxTextCtrl::PositionToXY(long pos, long *x, long *y) const
HWND hWnd = GetHwnd();
// This gets the line number containing the character
int lineNo;
long lineNo;
#if wxUSE_RICHEDIT
if ( IsRich() )
{
lineNo = (int)SendMessage(hWnd, EM_EXLINEFROMCHAR, 0, (LPARAM)pos);
lineNo = SendMessage(hWnd, EM_EXLINEFROMCHAR, 0, (LPARAM)pos);
}
else
#endif // wxUSE_RICHEDIT
lineNo = (int)SendMessage(hWnd, EM_LINEFROMCHAR, (WPARAM)pos, 0);
{
lineNo = SendMessage(hWnd, EM_LINEFROMCHAR, (WPARAM)pos, 0);
}
if ( lineNo == -1 )
{
@@ -938,7 +942,7 @@ bool wxTextCtrl::PositionToXY(long pos, long *x, long *y) const
}
// This gets the char index for the _beginning_ of this line
int charIndex = (int)SendMessage(hWnd, EM_LINEINDEX, (WPARAM)lineNo, (LPARAM)0);
long charIndex = SendMessage(hWnd, EM_LINEINDEX, (WPARAM)lineNo, (LPARAM)0);
if ( charIndex == -1 )
{
return FALSE;
@@ -946,9 +950,9 @@ bool wxTextCtrl::PositionToXY(long pos, long *x, long *y) const
// The X position must therefore be the different between pos and charIndex
if ( x )
*x = (long)(pos - charIndex);
*x = pos - charIndex;
if ( y )
*y = (long)lineNo;
*y = lineNo;
return TRUE;
}
@@ -978,11 +982,16 @@ void wxTextCtrl::ShowPosition(long pos)
(void)SendMessage(hWnd, EM_LINESCROLL, (WPARAM)0, (LPARAM)linesToScroll);
}
long wxTextCtrl::GetLengthOfLineContainingPos(long pos) const
{
return ::SendMessage(GetHwnd(), EM_LINELENGTH, (WPARAM)pos, 0);
}
int wxTextCtrl::GetLineLength(long lineNo) const
{
long charIndex = XYToPosition(0, lineNo);
int len = (int)SendMessage(GetHwnd(), EM_LINELENGTH, charIndex, 0);
return len;
long pos = XYToPosition(0, lineNo);
return GetLengthOfLineContainingPos(pos);
}
wxString wxTextCtrl::GetLineText(long lineNo) const
@@ -1033,12 +1042,12 @@ void wxTextCtrl::Redo()
bool wxTextCtrl::CanUndo() const
{
return (::SendMessage(GetHwnd(), EM_CANUNDO, 0, 0) != 0);
return ::SendMessage(GetHwnd(), EM_CANUNDO, 0, 0) != 0;
}
bool wxTextCtrl::CanRedo() const
{
return (::SendMessage(GetHwnd(), EM_CANUNDO, 0, 0) != 0);
return ::SendMessage(GetHwnd(), EM_CANUNDO, 0, 0) != 0;
}
// ----------------------------------------------------------------------------
@@ -1247,9 +1256,7 @@ void wxTextCtrl::OnEraseBackground(wxEraseEvent& event)
RECT rect;
::GetClientRect(GetHwnd(), &rect);
COLORREF ref = PALETTERGB(col.Red(),
col.Green(),
col.Blue());
COLORREF ref = wxColourToRGB(col);
HBRUSH hBrush = ::CreateSolidBrush(ref);
if ( !hBrush )
wxLogLastError(wxT("CreateSolidBrush"));
@@ -1465,11 +1472,6 @@ bool wxTextCtrl::MSWOnNotify(int idCtrl, WXLPARAM lParam, WXLPARAM *result)
// colour setting for the rich edit controls
// ----------------------------------------------------------------------------
// Watcom C++ doesn't define this
#ifndef SCF_ALL
#define SCF_ALL 0x0004
#endif
bool wxTextCtrl::SetBackgroundColour(const wxColour& colour)
{
if ( !wxTextCtrlBase::SetBackgroundColour(colour) )
@@ -1522,10 +1524,9 @@ bool wxTextCtrl::SetStyle(long start, long end, const wxTextAttr& style)
return FALSE;
}
// the rich text control doesn't handle setting background colour, so don't
// even try if it's the only thing we want to change
if ( wxRichEditModule::GetLoadedVersion() < 2 &&
!style.HasFont() && !style.HasTextColour() )
// the richedit 1.0 doesn't handle setting background colour, so don't
// even try to do anything if it's the only thing we want to change
if ( m_verRichEdit == 1 && !style.HasFont() && !style.HasTextColour() )
{
// nothing to do: return TRUE if there was really nothing to do and
// FALSE if we failed to set bg colour
@@ -1559,8 +1560,23 @@ bool wxTextCtrl::SetStyle(long start, long end, const wxTextAttr& style)
#else
CHARFORMAT cf;
#endif
wxZeroMemory(cf);
cf.cbSize = sizeof(cf);
// we can't use CHARFORMAT2 with RichEdit 1.0, so pretend it is a simple
// CHARFORMAT in that case
#if wxUSE_RICHEDIT2
if ( m_verRichEdit == 1 )
{
// this is the only thing the control is going to grok
cf.cbSize = sizeof(CHARFORMAT);
}
else
#endif
{
// CHARFORMAT or CHARFORMAT2
cf.cbSize = sizeof(cf);
}
if ( style.HasFont() )
{
@@ -1609,7 +1625,7 @@ bool wxTextCtrl::SetStyle(long start, long end, const wxTextAttr& style)
}
#if wxUSE_RICHEDIT2
if ( wxRichEditModule::GetLoadedVersion() > 1 && style.HasBackgroundColour() )
if ( m_verRichEdit != 1 && style.HasBackgroundColour() )
{
cf.dwMask |= CFM_BACKCOLOR;
cf.crBackColor = wxColourToRGB(style.GetBackgroundColour());
@@ -1645,48 +1661,48 @@ bool wxRichEditModule::OnInit()
void wxRichEditModule::OnExit()
{
if ( ms_hRichEdit )
for ( int i = 0; i < WXSIZEOF(ms_hRichEdit); i++ )
{
FreeLibrary(ms_hRichEdit);
if ( ms_hRichEdit[i] )
{
::FreeLibrary(ms_hRichEdit[i]);
}
}
}
/* static */
bool wxRichEditModule::Load(int version)
{
wxCHECK_MSG( version >= 1 && version <= 3, FALSE,
// we don't support loading richedit 3.0 as I don't know how to distinguish
// it from 2.0 anyhow
wxCHECK_MSG( version == 1 || version == 2, FALSE,
_T("incorrect richedit control version requested") );
if ( version <= ms_verRichEdit )
// make it the index in the array
version--;
if ( ms_hRichEdit[version] )
{
// we've already got this or better
// we've already got this one
return TRUE;
}
if ( ms_hRichEdit )
if ( ms_hRichEdit[version] == (HINSTANCE)-1 )
{
::FreeLibrary(ms_hRichEdit);
// we had already tried to load it and failed
return FALSE;
}
// always try load riched20.dll first - like this we won't have to reload
// it later if we're first asked for RE 1 and then for RE 2 or 3
wxString dllname = _T("riched20.dll");
ms_hRichEdit = ::LoadLibrary(dllname);
ms_verRichEdit = 2; // no way to tell if it's 2 or 3, assume 2
wxString dllname = version ? _T("riched20") : _T("riched32");
dllname += _T(".dll");
if ( !ms_hRichEdit && (version == 1) )
{
// fall back to RE 1
dllname = _T("riched32.dll");
ms_hRichEdit = ::LoadLibrary(dllname);
ms_verRichEdit = 1;
}
ms_hRichEdit[version] = ::LoadLibrary(dllname);
if ( !ms_hRichEdit )
if ( !ms_hRichEdit[version] )
{
wxLogSysError(_("Could not load Rich Edit DLL '%s'"), dllname.c_str());
ms_verRichEdit = -1;
ms_hRichEdit[version] = (HINSTANCE)-1;
return FALSE;
}