implemented fallback for AlphaBlend() for the systems not supporting it

[wxWidgets.git] / src / common / textcmn.cpp

diff --git a/src/common/textcmn.cpp b/src/common/textcmn.cpp
index ccaa6e3bfa3b41a1d608b40dfd7c4f05acb27cfc..6709d10e0b6246ac46897cb4cff7f4166a542114 100644 (file)
--- a/src/common/textcmn.cpp
+++ b/src/common/textcmn.cpp
@@ -6,13 +6,17 @@
 // Created:     13.07.99
 // RCS-ID:      $Id$
 // Copyright:   (c) wxWindows team
 // Created:     13.07.99
 // RCS-ID:      $Id$
 // Copyright:   (c) wxWindows team

-// Licence:     wxWindows license
+// Licence:     wxWindows licence

 ///////////////////////////////////////////////////////////////////////////////
 
 // ============================================================================
 // declarations
 // ============================================================================
 
 ///////////////////////////////////////////////////////////////////////////////
 
 // ============================================================================
 // declarations
 // ============================================================================
 

+#ifdef __GNUG__
+    #pragma implementation "textctrlbase.h"
+#endif
+

 // for compilers that support precompilation, includes "wx.h".
 #include "wx/wxprec.h"
 
 // for compilers that support precompilation, includes "wx.h".
 #include "wx/wxprec.h"
 


@@ -20,6 +24,8 @@
     #pragma hdrstop
 #endif
 
     #pragma hdrstop
 #endif
 

+#if wxUSE_TEXTCTRL
+

 #ifndef WX_PRECOMP
     #include "wx/intl.h"
     #include "wx/log.h"
 #ifndef WX_PRECOMP
     #include "wx/intl.h"
     #include "wx/log.h"


@@ -40,16 +46,90 @@
 // implementation
 // ============================================================================
 
 // implementation
 // ============================================================================
 

+IMPLEMENT_DYNAMIC_CLASS(wxTextUrlEvent, wxCommandEvent)
+
+DEFINE_EVENT_TYPE(wxEVT_COMMAND_TEXT_UPDATED)
+DEFINE_EVENT_TYPE(wxEVT_COMMAND_TEXT_ENTER)
+DEFINE_EVENT_TYPE(wxEVT_COMMAND_TEXT_URL)
+DEFINE_EVENT_TYPE(wxEVT_COMMAND_TEXT_MAXLEN)
+

 // ----------------------------------------------------------------------------
 // ctor
 // ----------------------------------------------------------------------------
 
 wxTextCtrlBase::wxTextCtrlBase()
 {
 // ----------------------------------------------------------------------------
 // ctor
 // ----------------------------------------------------------------------------
 
 wxTextCtrlBase::wxTextCtrlBase()
 {

-#ifndef NO_TEXT_WINDOW_STREAM
-    if (allocate())
-        setp(base(),ebuf());
-#endif // NO_TEXT_WINDOW_STREAM
+}
+
+wxTextCtrlBase::~wxTextCtrlBase()
+{
+}
+
+// ----------------------------------------------------------------------------
+// style functions - not implemented here
+// ----------------------------------------------------------------------------
+
+/* static */
+wxTextAttr wxTextAttr::Combine(const wxTextAttr& attr,
+                               const wxTextAttr& attrDef,
+                               const wxTextCtrlBase *text)
+{
+    wxFont font = attr.GetFont();
+    if ( !font.Ok() )
+    {
+        font = attrDef.GetFont();
+
+        if ( text && !font.Ok() )
+            font = text->GetFont();
+    }
+
+    wxColour colFg = attr.GetTextColour();
+    if ( !colFg.Ok() )
+    {
+        colFg = attrDef.GetTextColour();
+
+        if ( text && !colFg.Ok() )
+            colFg = text->GetForegroundColour();
+    }
+
+    wxColour colBg = attr.GetBackgroundColour();
+    if ( !colBg.Ok() )
+    {
+        colBg = attrDef.GetBackgroundColour();
+
+        if ( text && !colBg.Ok() )
+            colBg = text->GetBackgroundColour();
+    }
+
+    return wxTextAttr(colFg, colBg, font);
+}
+
+// apply styling to text range
+bool wxTextCtrlBase::SetStyle(long WXUNUSED(start), long WXUNUSED(end),
+                              const wxTextAttr& WXUNUSED(style))
+{
+    // to be implemented in derived TextCtrl classes
+    return FALSE;
+}
+
+// change default text attributes
+bool wxTextCtrlBase::SetDefaultStyle(const wxTextAttr& style)
+{
+    // keep the old attributes if the new style doesn't specify them unless the
+    // new style is empty - then reset m_defaultStyle (as there is no other way
+    // to do it)
+    if ( style.IsDefault() )
+        m_defaultStyle = style;
+    else
+        m_defaultStyle = wxTextAttr::Combine(style, m_defaultStyle, this);
+
+    return TRUE;
+}
+
+// get default text attributes
+const wxTextAttr& wxTextCtrlBase::GetDefaultStyle() const
+{
+    return m_defaultStyle;

 }
 
 // ----------------------------------------------------------------------------
 }
 
 // ----------------------------------------------------------------------------


@@ -58,6 +138,7 @@ wxTextCtrlBase::wxTextCtrlBase()
 
 bool wxTextCtrlBase::LoadFile(const wxString& filename)
 {
 
 bool wxTextCtrlBase::LoadFile(const wxString& filename)
 {

+#if wxUSE_FFILE

     wxFFile file(filename);
     if ( file.IsOpened() )
     {
     wxFFile file(filename);
     if ( file.IsOpened() )
     {


@@ -75,6 +156,7 @@ bool wxTextCtrlBase::LoadFile(const wxString& filename)
     }
 
     wxLogError(_("File couldn't be loaded."));
     }
 
     wxLogError(_("File couldn't be loaded."));

+#endif // wxUSE_FFILE

 
     return FALSE;
 }
 
     return FALSE;
 }


@@ -85,12 +167,13 @@ bool wxTextCtrlBase::SaveFile(const wxString& filename)
     if ( !filenameToUse )
     {
         // what kind of message to give? is it an error or a program bug?
     if ( !filenameToUse )
     {
         // what kind of message to give? is it an error or a program bug?

-        wxLogDebug(_T("Can't save textctrl to file without filename."));
+        wxLogDebug(wxT("Can't save textctrl to file without filename."));

 
         return FALSE;
     }
 
 
         return FALSE;
     }
 

-    wxFFile file(filename, "w");
+#if wxUSE_FFILE
+    wxFFile file(filename, _T("w"));

     if ( file.IsOpened() && file.Write(GetValue()) )
     {
         // it's not modified any longer
     if ( file.IsOpened() && file.Write(GetValue()) )
     {
         // it's not modified any longer


@@ -102,6 +185,7 @@ bool wxTextCtrlBase::SaveFile(const wxString& filename)
     }
 
     wxLogError(_("The text couldn't be saved."));
     }
 
     wxLogError(_("The text couldn't be saved."));

+#endif // wxUSE_FFILE

 
     return FALSE;
 }
 
     return FALSE;
 }


@@ -119,7 +203,7 @@ wxTextCtrl& wxTextCtrlBase::operator<<(const wxString& s)
 wxTextCtrl& wxTextCtrlBase::operator<<(float f)
 {
     wxString str;
 wxTextCtrl& wxTextCtrlBase::operator<<(float f)
 {
     wxString str;

-    str.Printf(_T("%.2f"), f);
+    str.Printf(wxT("%.2f"), f);

     AppendText(str);
     return *TEXTCTRL(this);
 }
     AppendText(str);
     return *TEXTCTRL(this);
 }


@@ -127,7 +211,7 @@ wxTextCtrl& wxTextCtrlBase::operator<<(float f)
 wxTextCtrl& wxTextCtrlBase::operator<<(double d)
 {
     wxString str;
 wxTextCtrl& wxTextCtrlBase::operator<<(double d)
 {
     wxString str;

-    str.Printf(_T("%.2f"), d);
+    str.Printf(wxT("%.2f"), d);

     AppendText(str);
     return *TEXTCTRL(this);
 }
     AppendText(str);
     return *TEXTCTRL(this);
 }


@@ -135,7 +219,7 @@ wxTextCtrl& wxTextCtrlBase::operator<<(double d)
 wxTextCtrl& wxTextCtrlBase::operator<<(int i)
 {
     wxString str;
 wxTextCtrl& wxTextCtrlBase::operator<<(int i)
 {
     wxString str;

-    str.Printf(_T("%d"), i);
+    str.Printf(wxT("%d"), i);

     AppendText(str);
     return *TEXTCTRL(this);
 }
     AppendText(str);
     return *TEXTCTRL(this);
 }


@@ -143,12 +227,12 @@ wxTextCtrl& wxTextCtrlBase::operator<<(int i)
 wxTextCtrl& wxTextCtrlBase::operator<<(long i)
 {
     wxString str;
 wxTextCtrl& wxTextCtrlBase::operator<<(long i)
 {
     wxString str;

-    str.Printf(_T("%ld"), i);
+    str.Printf(wxT("%ld"), i);

     AppendText(str);
     return *TEXTCTRL(this);
 }
 
     AppendText(str);
     return *TEXTCTRL(this);
 }
 

-wxTextCtrl& wxTextCtrlBase::operator<<(const char c)
+wxTextCtrl& wxTextCtrlBase::operator<<(const wxChar c)

 {
     return operator<<(wxString(c));
 }
 {
     return operator<<(wxString(c));
 }


@@ -159,34 +243,173 @@ wxTextCtrl& wxTextCtrlBase::operator<<(const char c)
 
 #ifndef NO_TEXT_WINDOW_STREAM
 
 
 #ifndef NO_TEXT_WINDOW_STREAM
 

-int wxTextCtrlBase::overflow( int WXUNUSED(c) )
+int wxTextCtrlBase::overflow(int c)
+{
+    AppendText((wxChar)c);
+
+    // return something different from EOF
+    return 0;
+}
+
+#endif // NO_TEXT_WINDOW_STREAM
+
+// ----------------------------------------------------------------------------
+// clipboard stuff
+// ----------------------------------------------------------------------------
+
+bool wxTextCtrlBase::CanCopy() const

 {
 {

-    int len = pptr() - pbase();
-    char *txt = new char[len+1];
-    strncpy(txt, pbase(), len);
-    txt[len] = '\0';
-    (*this) << txt;
-    setp(pbase(), epptr());
-    delete[] txt;
-    return EOF;
+    // can copy if there's a selection
+    long from, to;
+    GetSelection(&from, &to);
+    return from != to;

 }
 
 }
 

-int wxTextCtrlBase::sync()
+bool wxTextCtrlBase::CanCut() const

 {
 {

-    int len = pptr() - pbase();
-    char *txt = new char[len+1];
-    strncpy(txt, pbase(), len);
-    txt[len] = '\0';
-    (*this) << txt;
-    setp(pbase(), epptr());
-    delete[] txt;
-    return 0;
+    // can cut if there's a selection and if we're not read only
+    return CanCopy() && IsEditable();

 }
 
 }
 

-int wxTextCtrlBase::underflow()
+bool wxTextCtrlBase::CanPaste() const

 {
 {

-    return EOF;
+    // can paste if we are not read only
+    return IsEditable();

 }
 
 }
 

-#endif // NO_TEXT_WINDOW_STREAM
+// ----------------------------------------------------------------------------
+// emulating key presses
+// ----------------------------------------------------------------------------
+
+bool wxTextCtrlBase::EmulateKeyPress(const wxKeyEvent& event)
+{
+    // the generic version is unused in wxMSW
+#ifndef __WIN32__
+    wxChar ch = 0;
+    int keycode = event.GetKeyCode();
+    switch ( keycode )
+    {
+        case WXK_NUMPAD0:
+        case WXK_NUMPAD1:
+        case WXK_NUMPAD2:
+        case WXK_NUMPAD3:
+        case WXK_NUMPAD4:
+        case WXK_NUMPAD5:
+        case WXK_NUMPAD6:
+        case WXK_NUMPAD7:
+        case WXK_NUMPAD8:
+        case WXK_NUMPAD9:
+            ch = _T('0') + keycode - WXK_NUMPAD0;
+            break;
+
+        case WXK_MULTIPLY:
+        case WXK_NUMPAD_MULTIPLY:
+            ch = _T('*');
+            break;
+
+        case WXK_ADD:
+        case WXK_NUMPAD_ADD:
+            ch = _T('+');
+            break;
+
+        case WXK_SUBTRACT:
+        case WXK_NUMPAD_SUBTRACT:
+            ch = _T('-');
+            break;
+
+        case WXK_DECIMAL:
+        case WXK_NUMPAD_DECIMAL:
+            ch = _T('.');
+            break;
+
+        case WXK_DIVIDE:
+        case WXK_NUMPAD_DIVIDE:
+            ch = _T('/');
+            break;
+
+        case WXK_DELETE:
+        case WXK_NUMPAD_DELETE:
+            // delete the character at cursor
+            {
+                const long pos = GetInsertionPoint(),
+                           last = GetLastPosition();
+                if ( pos < last )
+                    Remove(pos, pos + 1);
+            }
+            break;
+
+        case WXK_BACK:
+            // delete the character before the cursor
+            {
+                const long pos = GetInsertionPoint();
+                if ( pos > 0 )
+                    Remove(pos - 1, pos);
+            }
+            break;
+
+        default:
+            if ( keycode < 256 && keycode >= 0 && wxIsprint(keycode) )
+            {
+                // FIXME this is not going to work for non letters...
+                if ( !event.ShiftDown() )
+                {
+                    keycode = wxTolower(keycode);
+                }
+
+                ch = (wxChar)keycode;
+            }
+            else
+            {
+                ch = _T('\0');
+            }
+    }
+
+    if ( ch )
+    {
+        WriteText(ch);
+
+        return TRUE;
+    }
+#endif // !__WIN32__
+
+    return FALSE;
+}
+
+// ----------------------------------------------------------------------------
+// selection and ranges
+// ----------------------------------------------------------------------------
+
+void wxTextCtrlBase::SelectAll()
+{
+    SetSelection(0, GetLastPosition());
+}
+
+wxString wxTextCtrlBase::GetStringSelection() const
+{
+    long from, to;
+    GetSelection(&from, &to);
+
+    return GetRange(from, to);
+}
+
+wxString wxTextCtrlBase::GetRange(long from, long to) const
+{
+    wxString sel;
+    if ( from < to )
+    {
+        sel = GetValue().Mid(from, to - from);
+    }
+
+    return sel;
+}
+
+#else // !wxUSE_TEXTCTRL
+
+// define this one even if !wxUSE_TEXTCTRL because it is also used by other
+// controls (wxComboBox and wxSpinCtrl)
+#include "wx/event.h"
+
+DEFINE_EVENT_TYPE(wxEVT_COMMAND_TEXT_UPDATED)
+
+#endif // wxUSE_TEXTCTRL/!wxUSE_TEXTCTRL