don't crash in wx(Flex)GridSizer with division by 0, assert instead; also factored...

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

diff --git a/src/common/textcmn.cpp b/src/common/textcmn.cpp
index 8b5744f1bf5815e5f37c47ed5218c7756d782dfe..de9a68979c74aa898759beb12d857ce42d514d2f 100644 (file)
--- a/src/common/textcmn.cpp
+++ b/src/common/textcmn.cpp
@@ -69,6 +69,41 @@ wxTextCtrlBase::~wxTextCtrlBase()
 // style functions - not implemented here
 // ----------------------------------------------------------------------------
 
 // 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))
 // apply styling to text range
 bool wxTextCtrlBase::SetStyle(long WXUNUSED(start), long WXUNUSED(end),
                               const wxTextAttr& WXUNUSED(style))


@@ -78,9 +113,16 @@ bool wxTextCtrlBase::SetStyle(long WXUNUSED(start), long WXUNUSED(end),
 }
 
 // change default text attributes
 }
 
 // change default text attributes

-bool wxTextCtrlBase::SetDefaultStyle(const wxTextAttr &style)
+bool wxTextCtrlBase::SetDefaultStyle(const wxTextAttr& style)

 {
 {

-    m_defaultStyle = 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;
 }
 
     return TRUE;
 }
 


@@ -236,7 +278,85 @@ bool wxTextCtrlBase::CanPaste() const
 }
 
 // ----------------------------------------------------------------------------
 }
 
 // ----------------------------------------------------------------------------

-// misc
+// emulating key presses
+// ----------------------------------------------------------------------------
+
+bool wxTextCtrlBase::EmulateKeyPress(const wxKeyEvent& event)
+{
+    // the generic version is unused in wxMSW
+#ifndef __WIN32__
+    wxChar ch;
+    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;
+
+        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()
 // ----------------------------------------------------------------------------
 
 void wxTextCtrlBase::SelectAll()


@@ -249,6 +369,11 @@ wxString wxTextCtrlBase::GetStringSelection() const
     long from, to;
     GetSelection(&from, &to);
 
     long from, to;
     GetSelection(&from, &to);
 

+    return GetRange(from, to);
+}
+
+wxString wxTextCtrlBase::GetRange(long from, long to) const
+{

     wxString sel;
     if ( from < to )
     {
     wxString sel;
     if ( from < to )
     {