don't compare invalid iterators/node pointers

[wxWidgets.git] / src / gtk / textctrl.cpp

diff --git a/src/gtk/textctrl.cpp b/src/gtk/textctrl.cpp
index 74425264affe64cd87ce20917f0756d6c2a15f86..373b2536b748ddfdadbbdb67b8efe1608b7b04d3 100644 (file)
--- a/src/gtk/textctrl.cpp
+++ b/src/gtk/textctrl.cpp
@@ -28,13 +28,6 @@
 #include "wx/gtk/private.h"
 #include <gdk/gdkkeysyms.h>
 
-//-----------------------------------------------------------------------------
-// idle system
-//-----------------------------------------------------------------------------
-
-extern void wxapp_install_idle_handler();
-extern bool g_isIdle;
-
 //-----------------------------------------------------------------------------
 // data
 //-----------------------------------------------------------------------------
@@ -92,6 +85,19 @@ static void wxGtkTextApplyTagsFromAttr(GtkTextBuffer *text_buffer,
                                               NULL );
         gtk_text_buffer_apply_tag (text_buffer, tag, start, end);
         g_free (font_string);
+
+        if (attr.GetFont().GetUnderlined())
+        {
+            g_snprintf(buf, sizeof(buf), "WXFONTUNDERLINE");
+            tag = gtk_text_tag_table_lookup( gtk_text_buffer_get_tag_table( text_buffer ),
+                                             buf );
+            if (!tag)
+                tag = gtk_text_buffer_create_tag( text_buffer, buf,
+                                                  "underline-set", TRUE,
+                                                  "underline", PANGO_UNDERLINE_SINGLE,
+                                                  NULL );
+            gtk_text_buffer_apply_tag (text_buffer, tag, start, end);
+        }
     }
 
     if (attr.HasTextColour())
@@ -618,7 +624,10 @@ bool wxTextCtrl::Create( wxWindow *parent,
     PostCreation(size);
 
     if (multi_line)
+    {
         gtk_widget_show(m_text);
+        SetVScrollAdjustment(gtk_scrolled_window_get_vadjustment((GtkScrolledWindow*)m_widget));
+    }
 
     if (!value.empty())
     {
@@ -951,10 +960,38 @@ int wxTextCtrl::GetLineLength(long lineNo) const
 
 int wxTextCtrl::GetNumberOfLines() const
 {
-    if (m_windowStyle & wxTE_MULTILINE)
-        return gtk_text_buffer_get_line_count( m_buffer );
-    else
+    if ( m_windowStyle & wxTE_MULTILINE )
+    {
+        GtkTextIter iter;
+        gtk_text_buffer_get_iter_at_offset( m_buffer, &iter, 0 );
+
+        // move forward by one display line until the end is reached
+        int lineCount = 1;
+        while ( gtk_text_view_forward_display_line(GTK_TEXT_VIEW(m_text), &iter) )
+        {
+            lineCount++;
+        }
+
+        // If the last character in the text buffer is a newline,
+        // gtk_text_view_forward_display_line() will return false without that
+        // line being counted. Must add one manually in that case.
+        GtkTextIter lastCharIter;        
+        gtk_text_buffer_get_iter_at_offset
+        (
+            m_buffer,
+            &lastCharIter,
+            gtk_text_buffer_get_char_count(m_buffer) - 1
+        );
+        gchar lastChar = gtk_text_iter_get_char( &lastCharIter );
+        if ( lastChar == wxT('\n') )
+            lineCount++;
+
+        return lineCount;
+    }
+    else // single line
+    {
         return 1;
+    }
 }
 
 void wxTextCtrl::SetInsertionPoint( long pos )
@@ -1704,64 +1741,6 @@ void wxTextCtrl::OnUrlMouseEvent(wxMouseEvent& event)
     GetEventHandler()->ProcessEvent(url_event);
 }
 
-// ----------------------------------------------------------------------------
-// scrolling
-// ----------------------------------------------------------------------------
-
-GtkAdjustment *wxTextCtrl::GetVAdj() const
-{
-    if ( !IsMultiLine() )
-        return NULL;
-
-    return gtk_scrolled_window_get_vadjustment(GTK_SCROLLED_WINDOW(m_widget));
-}
-
-bool wxTextCtrl::DoScroll(GtkAdjustment *adj, int diff)
-{
-    float value = adj->value + diff;
-
-    if ( value < 0 )
-        value = 0;
-
-    float upper = adj->upper - adj->page_size;
-    if ( value > upper )
-        value = upper;
-
-    // did we noticeably change the scroll position?
-    if ( fabs(adj->value - value) < 0.2 )
-    {
-        // well, this is what Robert does in wxScrollBar, so it must be good...
-        return false;
-    }
-
-    adj->value = value;
-
-    gtk_adjustment_value_changed(GTK_ADJUSTMENT(adj));
-
-    return true;
-}
-
-bool wxTextCtrl::ScrollLines(int lines)
-{
-    GtkAdjustment *adj = GetVAdj();
-    if ( !adj )
-        return false;
-
-    int diff = (int)ceil(lines*adj->step_increment);
-
-    return DoScroll(adj, diff);
-}
-
-bool wxTextCtrl::ScrollPages(int pages)
-{
-    GtkAdjustment *adj = GetVAdj();
-    if ( !adj )
-        return false;
-
-    return DoScroll(adj, (int)ceil(pages*adj->page_increment));
-}
-
-
 // static
 wxVisualAttributes
 wxTextCtrl::GetClassDefaultAttributes(wxWindowVariant WXUNUSED(variant))