/////////////////////////////////////////////////////////////////////////////
-// Name: textctrl.cpp
+// Name: msw/textctrl.cpp
// Purpose: wxTextCtrl
// Author: Julian Smart
// Modified by:
#pragma hdrstop
#endif
+#if wxUSE_TEXTCTRL
+
#ifndef WX_PRECOMP
#include "wx/textctrl.h"
#include "wx/settings.h"
#include "wx/brush.h"
#include "wx/utils.h"
+ #include "wx/intl.h"
#include "wx/log.h"
+ #include "wx/app.h"
#endif
+#include "wx/module.h"
+
#if wxUSE_CLIPBOARD
- #include "wx/app.h"
#include "wx/clipbrd.h"
#endif
#include <stdlib.h>
#include <sys/types.h>
-#if wxUSE_IOSTREAMH
-# include <fstream.h>
-#else
-# include <fstream>
+#if wxUSE_RICHEDIT && (!defined(__GNUWIN32_OLD__) || defined(__CYGWIN10__))
+ #include <richedit.h>
#endif
-#if wxUSE_RICHEDIT && (!defined(__GNUWIN32__) || defined(wxUSE_NORLANDER_HEADERS))
- #include <richedit.h>
+// old mingw32 doesn't define this
+#ifndef CFM_CHARSET
+ #define CFM_CHARSET 0x08000000
+#endif // CFM_CHARSET
+
+#ifndef CFM_BACKCOLOR
+ #define CFM_BACKCOLOR 0x04000000
#endif
-#if !USE_SHARED_LIBRARY
+// ----------------------------------------------------------------------------
+// private classes
+// ----------------------------------------------------------------------------
+
+#if wxUSE_RICHEDIT
+
+// this module initializes RichEdit DLL 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;
+
+ DECLARE_DYNAMIC_CLASS(wxRichEditModule)
+};
+
+HINSTANCE wxRichEditModule::ms_hRichEdit = (HINSTANCE)NULL;
+int wxRichEditModule::ms_verRichEdit = -1;
+
+IMPLEMENT_DYNAMIC_CLASS(wxRichEditModule, wxModule)
+
+#endif // wxUSE_RICHEDIT
// ----------------------------------------------------------------------------
// event tables and other macros
EVT_UPDATE_UI(wxID_PASTE, wxTextCtrl::OnUpdatePaste)
EVT_UPDATE_UI(wxID_UNDO, wxTextCtrl::OnUpdateUndo)
EVT_UPDATE_UI(wxID_REDO, wxTextCtrl::OnUpdateRedo)
+#ifdef __WIN16__
+ EVT_ERASE_BACKGROUND(wxTextCtrl::OnEraseBackground)
+#endif
END_EVENT_TABLE()
-#endif // USE_SHARED_LIBRARY
-
// ============================================================================
// implementation
// ============================================================================
if ( !CreateBase(parent, id, pos, size, style, validator, name) )
return FALSE;
- // Validator was set in CreateBase
- //SetValidator(validator);
if ( parent )
parent->AddChild(this);
- // set colours
- SetupColours();
-
// translate wxWin style flags to MSW ones, checking for consistency while
// doing it
long msStyle = ES_LEFT | WS_VISIBLE | WS_CHILD | WS_TABSTOP;
+
+ if ( m_windowStyle & wxCLIP_SIBLINGS )
+ msStyle |= WS_CLIPSIBLINGS;
+
if ( m_windowStyle & wxTE_MULTILINE )
{
wxASSERT_MSG( !(m_windowStyle & wxTE_PROCESS_ENTER),
- T("wxTE_PROCESS_ENTER style is ignored for multiline "
- "text controls (they always process it)") );
+ wxT("wxTE_PROCESS_ENTER style is ignored for multiline text controls (they always process it)") );
msStyle |= ES_MULTILINE | ES_WANTRETURN;
if ((m_windowStyle & wxTE_NO_VSCROLL) == 0)
if (m_windowStyle & wxTE_READONLY)
msStyle |= ES_READONLY;
- if (m_windowStyle & wxHSCROLL)
- msStyle |= (WS_HSCROLL | ES_AUTOHSCROLL);
if (m_windowStyle & wxTE_PASSWORD) // hidden input
msStyle |= ES_PASSWORD;
+ if (m_windowStyle & wxTE_AUTO_SCROLL)
+ msStyle |= ES_AUTOHSCROLL;
+
+
// we always want the characters and the arrows
m_lDlgCode = DLGC_WANTCHARS | DLGC_WANTARROWS;
m_lDlgCode |= DLGC_WANTTAB;
// do create the control - either an EDIT or RICHEDIT
- const wxChar *windowClass = T("EDIT");
+ wxString windowClass = wxT("EDIT");
#if wxUSE_RICHEDIT
if ( m_windowStyle & wxTE_RICH )
{
- msStyle |= ES_AUTOVSCROLL;
- m_isRich = TRUE;
- windowClass = T("RICHEDIT");
+ static bool s_errorGiven = FALSE; // MT-FIXME
+
+ // 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() )
+ {
+ wxLogError(_("Impossible to create a rich edit control, using simple text control instead. Please reinstall riched32.dll"));
+
+ s_errorGiven = TRUE;
+ }
+ }
+
+ if ( s_errorGiven )
+ {
+ m_isRich = FALSE;
+ }
+ else
+ {
+ msStyle |= ES_AUTOVSCROLL;
+ m_isRich = TRUE;
+
+ int ver = wxRichEditModule::GetLoadedVersion();
+ if ( ver == 1 )
+ {
+ windowClass = wxT("RICHEDIT");
+ }
+ else
+ {
+#ifndef RICHEDIT_CLASS
+ wxString RICHEDIT_CLASS;
+ RICHEDIT_CLASS.Printf(_T("RichEdit%d0"), ver);
+#if wxUSE_UNICODE
+ RICHEDIT_CLASS += _T('W');
+#else // ANSI
+ RICHEDIT_CLASS += _T('A');
+#endif // Unicode/ANSI
+#endif // !RICHEDIT_CLASS
+
+ windowClass = RICHEDIT_CLASS;
+ }
+ }
}
else
m_isRich = FALSE;
-#endif
+#endif // wxUSE_RICHEDIT
bool want3D;
WXDWORD exStyle = Determine3DEffects(WS_EX_CLIENTEDGE, &want3D);
// might be -1 in which case we should use the default values (and
// SetSize called below takes care of it)
m_hWnd = (WXHWND)::CreateWindowEx(exStyle,
- windowClass,
+ windowClass.c_str(),
NULL,
msStyle,
0, 0, 0, 0,
wxGetInstance(),
NULL);
- wxCHECK_MSG( m_hWnd, FALSE, T("Failed to create text ctrl") );
+ wxCHECK_MSG( m_hWnd, FALSE, wxT("Failed to create text ctrl") );
#if wxUSE_CTL3D
if ( want3D )
}
#endif
+ // set colours
+ SetupColours();
+
SetSize(pos.x, pos.y, size.x, size.y);
return TRUE;
GetClassName(hWnd, buf, WXSIZEOF(buf));
- if ( wxStricmp(buf, T("EDIT(")) == 0 )
+ if ( wxStricmp(buf, wxT("EDIT")) == 0 )
m_isRich = FALSE;
else
m_isRich = TRUE;
void wxTextCtrl::SetupColours()
{
- // FIXME why is bg colour not inherited from parent?
- SetBackgroundColour(wxSystemSettings::GetSystemColour(wxSYS_COLOUR_WINDOW));
+ wxColour bkgndColour;
+// if (IsEditable() || (m_windowStyle & wxTE_MULTILINE))
+ bkgndColour = wxSystemSettings::GetSystemColour(wxSYS_COLOUR_WINDOW);
+// else
+// bkgndColour = wxSystemSettings::GetSystemColour(wxSYS_COLOUR_3DFACE);
+
+ SetBackgroundColour(bkgndColour);
SetForegroundColour(GetParent()->GetForegroundColour());
}
wxString wxTextCtrl::GetValue() const
{
- return wxGetWindowText(GetHWND());
+ // we can't use wxGetWindowText() (i.e. WM_GETTEXT internally) for
+ // retrieving more than 64Kb under Win9x
+#if wxUSE_RICHEDIT
+ if ( m_isRich )
+ {
+ wxString str;
+
+ int len = GetWindowTextLength(GetHwnd());
+ if ( len )
+ {
+ // 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.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 ( *p == _T('\r') )
+ *p = _T('\n');
+ }
+
+ str.UngetWriteBuf();
+ }
+ //else: no text at all, leave the string empty
+
+ return str;
+ }
+#endif // wxUSE_RICHEDIT
+
+ // WM_GETTEXT uses standard DOS CR+LF (\r\n) convention - convert to the
+ // same one as above for consitency
+ wxString str = wxGetWindowText(GetHWND());
+
+ return wxTextFile::Translate(str, wxTextFileType_Unix);
}
void wxTextCtrl::SetValue(const wxString& value)
{
- wxString valueDos = wxTextFile::Translate(value, wxTextFileType_Dos);
+ // if the text is long enough, it's faster to just set it instead of first
+ // comparing it with the old one (chances are that it will be different
+ // anyhow, this comparison is there to avoid flicker for small single-line
+ // edit controls mostly)
+ if ( (value.length() > 0x400) || (value != GetValue()) )
+ {
+ wxString valueDos = wxTextFile::Translate(value, wxTextFileType_Dos);
- SetWindowText(GetHwnd(), valueDos);
+ SetWindowText(GetHwnd(), valueDos.c_str());
- AdjustSpaceLimit();
+ // for compatibility with the GTK and because it is more logical, we
+ // move the cursor to the end of the text after SetValue()
+
+ // GRG, Jun/2000: Changed this back after a lot of discussion
+ // in the lists. wxWindows 2.2 will have a set of flags to
+ // customize this behaviour.
+ //SetInsertionPointEnd();
+
+ AdjustSpaceLimit();
+ }
}
void wxTextCtrl::WriteText(const wxString& value)
{
wxString valueDos = wxTextFile::Translate(value, wxTextFileType_Dos);
+#if wxUSE_RICHEDIT
+ // ensure that the new text will be in the default style
+ if ( IsRich() &&
+ (m_defaultStyle.HasFont() || m_defaultStyle.HasTextColour()) )
+ {
+ long start, end;
+ GetSelection(&start, &end);
+ SetStyle(start, end, m_defaultStyle );
+ }
+#endif // wxUSE_RICHEDIT
+
SendMessage(GetHwnd(), EM_REPLACESEL, 0, (LPARAM)valueDos.c_str());
AdjustSpaceLimit();
void wxTextCtrl::Clear()
{
- SetWindowText(GetHwnd(), T(""));
+ SetWindowText(GetHwnd(), wxT(""));
}
// ----------------------------------------------------------------------------
// Can copy if there's a selection
long from, to;
GetSelection(& from, & to);
- return (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);
+ return (from != to) && (IsEditable());
}
bool wxTextCtrl::CanPaste() const
SendMessage(hWnd, EM_SETSEL, 0, MAKELPARAM(pos, pos));
#endif // Win32/16
- static const char *nothing = "";
+ static const wxChar *nothing = _T("");
SendMessage(hWnd, EM_REPLACESEL, 0, (LPARAM)nothing);
}
*from = charRange.cpMin;
*to = charRange.cpMax;
-
- return;
}
-#endif
- DWORD dwStart, dwEnd;
- WPARAM wParam = (WPARAM) (DWORD*) & dwStart; // receives starting position
- LPARAM lParam = (LPARAM) (DWORD*) & dwEnd; // receives ending position
+ else
+#endif // rich/!rich
+ {
+ DWORD dwStart, dwEnd;
+ WPARAM wParam = (WPARAM) &dwStart; // receives starting position
+ LPARAM lParam = (LPARAM) &dwEnd; // receives ending position
- ::SendMessage(GetHwnd(), EM_GETSEL, wParam, lParam);
+ ::SendMessage(GetHwnd(), EM_GETSEL, wParam, lParam);
- *from = dwStart;
- *to = dwEnd;
+ *from = dwStart;
+ *to = dwEnd;
+ }
}
bool wxTextCtrl::IsEditable() const
wxString wxTextCtrl::GetLineText(long lineNo) const
{
size_t len = (size_t)GetLineLength(lineNo) + 1;
- char *buf = (char *)malloc(len);
- *(WORD *)buf = len;
- int noChars = (int)SendMessage(GetHwnd(), EM_GETLINE, lineNo, (LPARAM)buf);
- buf[noChars] = 0;
- wxString str(buf);
+ // there must be at least enough place for the length WORD in the
+ // buffer
+ len += sizeof(WORD);
- free(buf);
+ wxString str;
+ wxChar *buf = str.GetWriteBuf(len);
+
+ *(WORD *)buf = (WORD)len;
+ len = (size_t)::SendMessage(GetHwnd(), EM_GETLINE, lineNo, (LPARAM)buf);
+ buf[len] = 0;
+
+ str.UngetWriteBuf(len);
return str;
}
}
}
-WXHBRUSH wxTextCtrl::OnCtlColor(WXHDC pDC, WXHWND pWnd, WXUINT nCtlColor,
- WXUINT message, WXWPARAM wParam,
- WXLPARAM lParam)
-{
-#if wxUSE_CTL3D
- if ( m_useCtl3D )
- {
- HBRUSH hbrush = Ctl3dCtlColorEx(message, wParam, lParam);
- return (WXHBRUSH) hbrush;
- }
-#endif
-
- HDC hdc = (HDC)pDC;
- SetBkMode(hdc, GetParent()->GetTransparentBackground() ? TRANSPARENT
- : OPAQUE);
-
- ::SetBkColor(hdc, RGB(GetBackgroundColour().Red(), GetBackgroundColour().Green(), GetBackgroundColour().Blue()));
- ::SetTextColor(hdc, RGB(GetForegroundColour().Red(), GetForegroundColour().Green(), GetForegroundColour().Blue()));
-
- wxBrush *backgroundBrush = wxTheBrushList->FindOrCreateBrush(GetBackgroundColour(), wxSOLID);
-
- return (WXHBRUSH) backgroundBrush->GetResourceHandle();
-}
-
void wxTextCtrl::OnChar(wxKeyEvent& event)
{
switch ( event.KeyCode() )
if ( !(m_windowStyle & wxTE_MULTILINE) )
{
wxCommandEvent event(wxEVT_COMMAND_TEXT_ENTER, m_windowId);
- event.SetEventObject( this );
+ InitCommandEvent(event);
+ event.SetString(GetValue());
if ( GetEventHandler()->ProcessEvent(event) )
return;
}
// ourselves the fact that we got here means that the user code
// decided to skip processing of this TAB - probably to let it
// do its default job.
- //
- // NB: Notice that Ctrl-Tab is handled elsewhere and Alt-Tab is
- // handled by Windows
{
wxNavigationKeyEvent eventNav;
eventNav.SetDirection(!event.ShiftDown());
- eventNav.SetWindowChange(FALSE);
+ eventNav.SetWindowChange(event.ControlDown());
eventNav.SetEventObject(this);
- if ( GetEventHandler()->ProcessEvent(eventNav) )
+ if ( GetParent()->GetEventHandler()->ProcessEvent(eventNav) )
return;
}
break;
-
- default:
- event.Skip();
- return;
}
- // don't just call event.Skip() because this will cause TABs and ENTERs
- // be passed upwards and we don't always want this - instead process it
- // right here
-
- // FIXME
+ // no, we didn't process it
event.Skip();
}
case EN_CHANGE:
{
wxCommandEvent event(wxEVT_COMMAND_TEXT_UPDATED, m_windowId);
- wxString val(GetValue());
- if ( !val.IsNull() )
- event.m_commandString = WXSTRINGCAST val;
- event.SetEventObject( this );
+ InitCommandEvent(event);
+ event.SetString(GetValue());
ProcessCommand(event);
}
break;
- case EN_ERRSPACE:
+ case EN_MAXTEXT:
// the text size limit has been hit - increase it
AdjustSpaceLimit();
break;
// the other notification messages are not processed
case EN_UPDATE:
- case EN_MAXTEXT:
+ case EN_ERRSPACE:
case EN_HSCROLL:
case EN_VSCROLL:
+ return FALSE;
default:
return FALSE;
}
return TRUE;
}
+WXHBRUSH wxTextCtrl::OnCtlColor(WXHDC pDC, WXHWND WXUNUSED(pWnd), WXUINT WXUNUSED(nCtlColor),
+#if wxUSE_CTL3D
+ WXUINT message,
+ WXWPARAM wParam,
+ WXLPARAM lParam
+#else
+ WXUINT WXUNUSED(message),
+ WXWPARAM WXUNUSED(wParam),
+ WXLPARAM WXUNUSED(lParam)
+#endif
+ )
+{
+#if wxUSE_CTL3D
+ if ( m_useCtl3D )
+ {
+ HBRUSH hbrush = Ctl3dCtlColorEx(message, wParam, lParam);
+ return (WXHBRUSH) hbrush;
+ }
+#endif // wxUSE_CTL3D
+
+ HDC hdc = (HDC)pDC;
+ if (GetParent()->GetTransparentBackground())
+ SetBkMode(hdc, TRANSPARENT);
+ else
+ SetBkMode(hdc, OPAQUE);
+
+ wxColour colBack = GetBackgroundColour();
+
+ if (!IsEnabled() && (GetWindowStyle() & wxTE_MULTILINE) == 0)
+ colBack = wxSystemSettings::GetSystemColour(wxSYS_COLOUR_3DFACE);
+
+ ::SetBkColor(hdc, wxColourToRGB(colBack));
+ ::SetTextColor(hdc, wxColourToRGB(GetForegroundColour()));
+
+ wxBrush *brush = wxTheBrushList->FindOrCreateBrush(colBack, wxSOLID);
+
+ return (WXHBRUSH)brush->GetResourceHandle();
+}
+
+// In WIN16, need to override normal erasing because
+// Ctl3D doesn't use the wxWindows background colour.
+#ifdef __WIN16__
+void wxTextCtrl::OnEraseBackground(wxEraseEvent& event)
+{
+ wxColour col(m_backgroundColour);
+
+#if wxUSE_CTL3D
+ if (m_useCtl3D)
+ col = wxSystemSettings::GetSystemColour(wxSYS_COLOUR_WINDOW);
+#endif
+
+ RECT rect;
+ ::GetClientRect(GetHwnd(), &rect);
+
+ COLORREF ref = PALETTERGB(col.Red(),
+ col.Green(),
+ col.Blue());
+ HBRUSH hBrush = ::CreateSolidBrush(ref);
+ if ( !hBrush )
+ wxLogLastError(wxT("CreateSolidBrush"));
+
+ HDC hdc = (HDC)event.GetDC()->GetHDC();
+
+ int mode = ::SetMapMode(hdc, MM_TEXT);
+
+ ::FillRect(hdc, &rect, hBrush);
+ ::DeleteObject(hBrush);
+ ::SetMapMode(hdc, mode);
+
+}
+#endif
+
void wxTextCtrl::AdjustSpaceLimit()
{
#ifndef __WIN16__
unsigned int len = ::GetWindowTextLength(GetHwnd()),
limit = ::SendMessage(GetHwnd(), EM_GETLIMITTEXT, 0, 0);
- if ( len > limit )
+ if ( len >= limit )
{
limit = len + 0x8000; // 32Kb
#if wxUSE_RICHEDIT
- if ( m_isRich || limit > 0xffff )
-#else
- if ( limit > 0xffff )
-#endif
- ::SendMessage(GetHwnd(), EM_LIMITTEXT, 0, limit);
+ if ( m_isRich )
+ {
+ // as a nice side effect, this also allows passing limit > 64Kb
+ ::SendMessage(GetHwnd(), EM_EXLIMITTEXT, 0, limit);
+ }
else
+#endif // wxUSE_RICHEDIT
+ {
+ if ( limit > 0xffff )
+ {
+ // this will set it to a platform-dependent maximum (much more
+ // than 64Kb under NT)
+ limit = 0;
+ }
+
::SendMessage(GetHwnd(), EM_LIMITTEXT, limit, 0);
+ }
}
-#endif
+#endif // !Win16
}
bool wxTextCtrl::AcceptsFocus() const
return IsEditable() && wxControl::AcceptsFocus();
}
-wxSize wxTextCtrl::DoGetBestSize()
+wxSize wxTextCtrl::DoGetBestSize() const
{
int cx, cy;
wxGetCharSize(GetHWND(), &cx, &cy, &GetFont());
int hText = EDIT_HEIGHT_FROM_CHAR_HEIGHT(cy);
if ( m_windowStyle & wxTE_MULTILINE )
{
- hText *= wxMin(GetNumberOfLines(), 5);
+ hText *= wxMax(GetNumberOfLines(), 5);
}
//else: for single line control everything is ok
// standard handlers for standard edit menu events
// ----------------------------------------------------------------------------
-void wxTextCtrl::OnCut(wxCommandEvent& event)
+void wxTextCtrl::OnCut(wxCommandEvent& WXUNUSED(event))
{
Cut();
}
-void wxTextCtrl::OnCopy(wxCommandEvent& event)
+void wxTextCtrl::OnCopy(wxCommandEvent& WXUNUSED(event))
{
Copy();
}
-void wxTextCtrl::OnPaste(wxCommandEvent& event)
+void wxTextCtrl::OnPaste(wxCommandEvent& WXUNUSED(event))
{
Paste();
}
-void wxTextCtrl::OnUndo(wxCommandEvent& event)
+void wxTextCtrl::OnUndo(wxCommandEvent& WXUNUSED(event))
{
Undo();
}
-void wxTextCtrl::OnRedo(wxCommandEvent& event)
+void wxTextCtrl::OnRedo(wxCommandEvent& WXUNUSED(event))
{
Redo();
}
event.Enable( CanRedo() );
}
+// the rest of the file only deals with the rich edit controls
+#if wxUSE_RICHEDIT
+
+// ----------------------------------------------------------------------------
+// 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) )
+ {
+ // colour didn't really change
+ return FALSE;
+ }
+
+ if ( IsRich() )
+ {
+ // rich edit doesn't use WM_CTLCOLOR, hence we need to send
+ // EM_SETBKGNDCOLOR additionally
+ ::SendMessage(GetHwnd(), EM_SETBKGNDCOLOR, 0, wxColourToRGB(colour));
+ }
+
+ return TRUE;
+}
+
+bool wxTextCtrl::SetForegroundColour(const wxColour& colour)
+{
+ if ( !wxTextCtrlBase::SetForegroundColour(colour) )
+ {
+ // colour didn't really change
+ return FALSE;
+ }
+
+ if ( IsRich() )
+ {
+ // change the colour of everything
+ CHARFORMAT cf;
+ wxZeroMemory(cf);
+ cf.cbSize = sizeof(cf);
+ cf.dwMask = CFM_COLOR;
+ cf.crTextColor = wxColourToRGB(colour);
+ ::SendMessage(GetHwnd(), EM_SETCHARFORMAT, SCF_ALL, (LPARAM)&cf);
+ }
+
+ return TRUE;
+}
+
+// ----------------------------------------------------------------------------
+// styling support for rich edit controls
+// ----------------------------------------------------------------------------
+
+bool wxTextCtrl::SetStyle(long start, long end, const wxTextAttr& style)
+{
+ if ( !IsRich() )
+ {
+ // can't do it with normal text control
+ 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() )
+ {
+ // nothing to do: return TRUE if there was really nothing to do and
+ // FALSE if we failed to set bg colour
+ return !style.HasBackgroundColour();
+ }
+
+ // order the range if needed
+ if ( start > end )
+ {
+ long tmp = start;
+ start = end;
+ end = tmp;
+ }
+
+ // we can only change the format of the selection, so select the range we
+ // want and restore the old selection later
+ long startOld, endOld;
+ GetSelection(&startOld, &endOld);
+
+ // but do we really have to change the selection?
+ bool changeSel = start != startOld || end != endOld;
+
+ if ( changeSel )
+ SendMessage(GetHwnd(), EM_SETSEL, (WPARAM) start, (LPARAM) end);
+
+ // initialize CHARFORMAT struct
+#if wxUSE_RICHEDIT2
+ CHARFORMAT2 cf;
+#else
+ CHARFORMAT cf;
+#endif
+ wxZeroMemory(cf);
+ cf.cbSize = sizeof(cf);
+
+ if ( style.HasFont() )
+ {
+ cf.dwMask |= CFM_FACE | CFM_SIZE | CFM_CHARSET |
+ CFM_ITALIC | CFM_BOLD | CFM_UNDERLINE;
+
+ // fill in data from LOGFONT but recalculate lfHeight because we need
+ // the real height in twips and not the negative number which
+ // wxFillLogFont() returns (this is correct in general and works with
+ // the Windows font mapper, but not here)
+ LOGFONT lf;
+ wxFillLogFont(&lf, &style.GetFont());
+ cf.yHeight = 20*style.GetFont().GetPointSize(); // 1 pt = 20 twips
+ cf.bCharSet = lf.lfCharSet;
+ cf.bPitchAndFamily = lf.lfPitchAndFamily;
+ wxStrncpy( cf.szFaceName, lf.lfFaceName, WXSIZEOF(cf.szFaceName) );
+
+ // also deal with underline/italic/bold attributes: note that we must
+ // always set CFM_ITALIC &c bits in dwMask, even if we don't set the
+ // style to allow clearing it
+ if ( lf.lfItalic )
+ {
+ cf.dwEffects |= CFE_ITALIC;
+ }
+
+ if ( lf.lfWeight == FW_BOLD )
+ {
+ cf.dwEffects |= CFE_BOLD;
+ }
+
+ if ( lf.lfUnderline )
+ {
+ cf.dwEffects |= CFE_UNDERLINE;
+ }
+
+ // strikeout fonts are not supported by wxWindows
+ }
+
+ if ( style.HasTextColour() )
+ {
+ cf.dwMask |= CFM_COLOR;
+ cf.crTextColor = wxColourToRGB(style.GetTextColour());
+ }
+
+#if wxUSE_RICHEDIT2
+ if ( wxRichEditModule::GetLoadedVersion() > 1 && style.HasBackgroundColour() )
+ {
+ cf.dwMask |= CFM_BACKCOLOR;
+ cf.crBackColor = wxColourToRGB(style.GetBackgroundColour());
+ }
+#endif // wxUSE_RICHEDIT2
+
+ // do format the selection
+ bool ok = ::SendMessage(GetHwnd(), EM_SETCHARFORMAT,
+ SCF_SELECTION, (LPARAM)&cf) != 0;
+ if ( !ok )
+ {
+ wxLogDebug(_T("SendMessage(EM_SETCHARFORMAT, SCF_SELECTION) failed"));
+ }
+
+ if ( changeSel )
+ {
+ // restore the original selection
+ SendMessage(GetHwnd(), EM_SETSEL, (WPARAM)startOld, (LPARAM)endOld);
+ }
+
+ return ok;
+}
+
+// ----------------------------------------------------------------------------
+// wxRichEditModule
+// ----------------------------------------------------------------------------
+
+bool wxRichEditModule::OnInit()
+{
+ // don't do anything - we will load it when needed
+ return TRUE;
+}
+
+void wxRichEditModule::OnExit()
+{
+ if ( ms_hRichEdit )
+ {
+ FreeLibrary(ms_hRichEdit);
+ }
+}
+
+/* static */
+bool wxRichEditModule::Load(int version)
+{
+ wxCHECK_MSG( version >= 1 && version <= 3, FALSE,
+ _T("incorrect richedit control version requested") );
+
+ if ( version <= ms_verRichEdit )
+ {
+ // we've already got this or better
+ return TRUE;
+ }
+
+ if ( ms_hRichEdit )
+ {
+ ::FreeLibrary(ms_hRichEdit);
+ }
+
+ // 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
+
+ if ( !ms_hRichEdit && (version == 1) )
+ {
+ // fall back to RE 1
+ dllname = _T("riched32.dll");
+ ms_hRichEdit = ::LoadLibrary(dllname);
+ ms_verRichEdit = 1;
+ }
+
+ if ( !ms_hRichEdit )
+ {
+ wxLogSysError(_("Could not load Rich Edit DLL '%s'"), dllname.c_str());
+
+ ms_verRichEdit = -1;
+
+ return FALSE;
+ }
+
+ return TRUE;
+}
+
+#endif // wxUSE_RICHEDIT
+
+#endif // wxUSE_TEXTCTRL
projects / wxWidgets.git / blobdiff