#include <sys/types.h>
#include <sys/stat.h>
#include <ctype.h>
+#include <math.h> // for fabs
#include "gdk/gdk.h"
#include "gtk/gtk.h"
extern bool g_blockEventsOnDrag;
extern wxCursor g_globalCursor;
-//-----------------------------------------------------------------------------
-// "changed"
-//-----------------------------------------------------------------------------
+// ----------------------------------------------------------------------------
+// helpers
+// ----------------------------------------------------------------------------
-static void
-gtk_text_changed_callback( GtkWidget *WXUNUSED(widget), wxTextCtrl *win )
+static void wxGtkTextInsert(GtkWidget *text,
+ const wxTextAttr& attr,
+ const char *txt,
+ size_t len)
{
- if (!win->m_hasVMT) return;
+ GdkFont *font = attr.HasFont() ? attr.GetFont().GetInternalFont()
+ : NULL;
- if (g_isIdle)
- wxapp_install_idle_handler();
+ GdkColor *colFg = attr.HasTextColour() ? attr.GetTextColour().GetColor()
+ : NULL;
- win->SetModified();
- win->UpdateFontIfNeeded();
+ GdkColor *colBg = attr.HasBackgroundColour()
+ ? attr.GetBackgroundColour().GetColor()
+ : NULL;
- wxCommandEvent event( wxEVT_COMMAND_TEXT_UPDATED, win->GetId() );
- event.SetString( win->GetValue() );
- event.SetEventObject( win );
- win->GetEventHandler()->ProcessEvent( event );
+ gtk_text_insert( GTK_TEXT(text), font, colFg, colBg, txt, len );
}
-//-----------------------------------------------------------------------------
-// "changed" from vertical scrollbar
-//-----------------------------------------------------------------------------
+// ----------------------------------------------------------------------------
+// "insert_text" for GtkEntry
+// ----------------------------------------------------------------------------
static void
-gtk_scrollbar_changed_callback( GtkWidget *WXUNUSED(widget), wxTextCtrl *win )
+gtk_insert_text_callback(GtkEditable *editable,
+ const gchar *new_text,
+ gint new_text_length,
+ gint *position,
+ wxTextCtrl *win)
{
- if (!win->m_hasVMT) return;
-
if (g_isIdle)
wxapp_install_idle_handler();
- win->CalculateScrollbar();
+ // we should only be called if we have a max len limit at all
+ GtkEntry *entry = GTK_ENTRY (editable);
+
+ wxCHECK_RET( entry->text_max_length, _T("shouldn't be called") );
+
+ // check that we don't overflow the max length limit
+ //
+ // FIXME: this doesn't work when we paste a string which is going to be
+ // truncated
+ if ( entry->text_length == entry->text_max_length )
+ {
+ // we don't need to run the base class version at all
+ gtk_signal_emit_stop_by_name(GTK_OBJECT(editable), "insert_text");
+
+ // remember that the next changed signal is to be ignored to avoid
+ // generating a dummy wxEVT_COMMAND_TEXT_UPDATED event
+ win->IgnoreNextTextUpdate();
+
+ // and generate the correct one ourselves
+ wxCommandEvent event(wxEVT_COMMAND_TEXT_MAXLEN, win->GetId());
+ event.SetEventObject(win);
+ event.SetString(win->GetValue());
+ win->GetEventHandler()->ProcessEvent( event );
+ }
}
//-----------------------------------------------------------------------------
-// "focus_in_event"
+// "changed"
//-----------------------------------------------------------------------------
-wxWindow *FindFocusedChild(wxWindow *win);
-extern wxWindow *g_focusWindow;
-extern bool g_blockEventsOnDrag;
-// extern bool g_isIdle;
-
-static gint gtk_text_focus_in_callback( GtkWidget *widget, GdkEvent *WXUNUSED(event), wxWindow *win )
+static void
+gtk_text_changed_callback( GtkWidget *widget, wxTextCtrl *win )
{
- // Necessary?
-#if 0
- if (g_isIdle)
- wxapp_install_idle_handler();
-#endif
- if (!win->m_hasVMT) return FALSE;
- if (g_blockEventsOnDrag) return FALSE;
-
- g_focusWindow = win;
+ if ( win->IgnoreTextUpdate() )
+ return;
- wxPanel *panel = wxDynamicCast(win->GetParent(), wxPanel);
- if (panel)
- {
- panel->SetLastFocus(win);
- }
+ if (!win->m_hasVMT) return;
-#ifdef HAVE_XIM
- if (win->m_ic)
- gdk_im_begin(win->m_ic, win->m_wxwindow->window);
-#endif
+ if (g_isIdle)
+ wxapp_install_idle_handler();
-#if 0
-#ifdef wxUSE_CARET
- // caret needs to be informed about focus change
- wxCaret *caret = win->GetCaret();
- if ( caret )
- {
- caret->OnSetFocus();
- }
-#endif // wxUSE_CARET
-#endif
+ win->SetModified();
+ win->UpdateFontIfNeeded();
- wxFocusEvent event( wxEVT_SET_FOCUS, win->GetId() );
+ wxCommandEvent event( wxEVT_COMMAND_TEXT_UPDATED, win->GetId() );
event.SetEventObject( win );
-
- if (win->GetEventHandler()->ProcessEvent( event ))
- {
- gtk_signal_emit_stop_by_name( GTK_OBJECT(widget), "focus_in_event" );
- return TRUE;
- }
-
- return FALSE;
+ event.SetString( win->GetValue() );
+ win->GetEventHandler()->ProcessEvent( event );
}
//-----------------------------------------------------------------------------
-// "focus_out_event"
+// "changed" from vertical scrollbar
//-----------------------------------------------------------------------------
-static gint gtk_text_focus_out_callback( GtkWidget *widget, GdkEvent *WXUNUSED(event), wxWindow *win )
+static void
+gtk_scrollbar_changed_callback( GtkWidget *WXUNUSED(widget), wxTextCtrl *win )
{
-#if 0
+ if (!win->m_hasVMT) return;
+
if (g_isIdle)
wxapp_install_idle_handler();
-#endif
-
- if (!win->m_hasVMT) return FALSE;
- if (g_blockEventsOnDrag) return FALSE;
-
-#if 0
- // if the focus goes out of our app alltogether, OnIdle() will send
- // wxActivateEvent, otherwise gtk_window_focus_in_callback() will reset
- // g_sendActivateEvent to -1
- g_sendActivateEvent = 0;
-#endif
-
- wxWindow *winFocus = FindFocusedChild(win);
- if ( winFocus )
- win = winFocus;
-
- g_focusWindow = (wxWindow *)NULL;
-
-#ifdef HAVE_XIM
- if (win->m_ic)
- gdk_im_end();
-#endif
-
-#if 0
-#ifdef wxUSE_CARET
- // caret needs to be informed about focus change
- wxCaret *caret = win->GetCaret();
- if ( caret )
- {
- caret->OnKillFocus();
- }
-#endif // wxUSE_CARET
-#endif
-
- wxFocusEvent event( wxEVT_KILL_FOCUS, win->GetId() );
- event.SetEventObject( win );
-
- if (win->GetEventHandler()->ProcessEvent( event ))
- {
- gtk_signal_emit_stop_by_name( GTK_OBJECT(widget), "focus_out_event" );
- return TRUE;
- }
- return FALSE;
+ win->CalculateScrollbar();
}
//-----------------------------------------------------------------------------
void wxTextCtrl::Init()
{
+ m_ignoreNextUpdate =
m_modified = FALSE;
m_updateFont = FALSE;
m_text =
m_parent->DoAddChild( this );
+ m_focusWidget = m_text;
+
PostCreation();
SetFont( parent->GetFont() );
if (multi_line)
gtk_widget_show(m_text);
- /* we want to be notified about text changes */
- gtk_signal_connect( GTK_OBJECT(m_text), "changed",
- GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this);
-
if (multi_line)
{
gtk_signal_connect(GTK_OBJECT(GTK_TEXT(m_text)->vadj), "changed",
(GtkSignalFunc) gtk_scrollbar_changed_callback, (gpointer) this );
-
- gtk_signal_connect( GTK_OBJECT(GTK_TEXT(m_text)), "focus_in_event",
- GTK_SIGNAL_FUNC(gtk_text_focus_in_callback), (gpointer)this );
-
- gtk_signal_connect( GTK_OBJECT(GTK_TEXT(m_text)), "focus_out_event",
- GTK_SIGNAL_FUNC(gtk_text_focus_out_callback), (gpointer)this );
- }
- else
- {
- gtk_signal_connect( GTK_OBJECT(m_text), "focus_in_event",
- GTK_SIGNAL_FUNC(gtk_text_focus_in_callback), (gpointer)this );
-
- gtk_signal_connect( GTK_OBJECT(m_text), "focus_out_event",
- GTK_SIGNAL_FUNC(gtk_text_focus_out_callback), (gpointer)this );
}
if (!value.IsEmpty())
gtk_text_set_editable( GTK_TEXT(m_text), 1 );
}
- SetBackgroundColour( wxSystemSettings::GetSystemColour(wxSYS_COLOUR_WINDOW) );
- SetForegroundColour( parent->GetForegroundColour() );
+ /* we want to be notified about text changes */
+ gtk_signal_connect( GTK_OBJECT(m_text), "changed",
+ GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this);
+
+ /* we don't set a valid background colour, because the window
+ manager should use a default one */
+ m_backgroundColour = wxColour();
+
+ wxColour colFg = parent->GetForegroundColour();
+ SetForegroundColour( colFg );
m_cursor = wxCursor( wxCURSOR_IBEAM );
+ wxTextAttr attrDef( colFg, m_backgroundColour, parent->GetFont() );
+ SetDefaultStyle( attrDef );
+
Show( TRUE );
return TRUE;
{
wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
- if (text.IsEmpty()) return;
-
- if (m_windowStyle & wxTE_MULTILINE)
- {
- /* this moves the cursor pos to behind the inserted text */
- gint len = GTK_EDITABLE(m_text)->current_pos;
+ if ( text.empty() )
+ return;
#if wxUSE_UNICODE
- wxWX2MBbuf buf = text.mbc_str();
- gtk_editable_insert_text( GTK_EDITABLE(m_text), buf, strlen(buf), &len );
+ wxWX2MBbuf buf = text.mbc_str();
+ const char *txt = buf;
+ size_t txtlen = strlen(buf);
#else
- gtk_editable_insert_text( GTK_EDITABLE(m_text), text, text.Length(), &len );
+ const char *txt = text;
+ size_t txtlen = text.length();
#endif
- /* bring editable's cursor uptodate. bug in GTK. */
+ if ( m_windowStyle & wxTE_MULTILINE )
+ {
+ // After cursor movements, gtk_text_get_point() is wrong by one.
+ gtk_text_set_point( GTK_TEXT(m_text), GTK_EDITABLE(m_text)->current_pos );
+
+ // if we have any special style, use it
+ if ( !m_defaultStyle.IsDefault() )
+ {
+ GetInsertionPoint();
+
+ wxGtkTextInsert(m_text, m_defaultStyle, txt, txtlen);
+ }
+ else // no style
+ {
+ gint len = GTK_EDITABLE(m_text)->current_pos;
+ gtk_editable_insert_text( GTK_EDITABLE(m_text), txt, txtlen, &len );
+ }
+
+ // Bring editable's cursor back uptodate.
GTK_EDITABLE(m_text)->current_pos = gtk_text_get_point( GTK_TEXT(m_text) );
}
- else
+ else // single line
{
- /* this moves the cursor pos to behind the inserted text */
+ // This moves the cursor pos to behind the inserted text.
gint len = GTK_EDITABLE(m_text)->current_pos;
-#if wxUSE_UNICODE
- wxWX2MBbuf buf = text.mbc_str();
- gtk_editable_insert_text( GTK_EDITABLE(m_text), buf, strlen(buf), &len );
-#else
- gtk_editable_insert_text( GTK_EDITABLE(m_text), text, text.Length(), &len );
-#endif
+ gtk_editable_insert_text( GTK_EDITABLE(m_text), txt, txtlen, &len );
- /* bring editable's cursor uptodate. bug in GTK. */
+ // Bring editable's cursor uptodate.
GTK_EDITABLE(m_text)->current_pos += text.Len();
- /* bring entry's cursor uptodate. bug in GTK. */
+ // Bring entry's cursor uptodate.
gtk_entry_set_position( GTK_ENTRY(m_text), GTK_EDITABLE(m_text)->current_pos );
}
+
+ m_modified = TRUE;
}
void wxTextCtrl::AppendText( const wxString &text )
{
- wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
-
- if (text.IsEmpty()) return;
+ SetInsertionPointEnd();
+ WriteText( text );
+}
+wxString wxTextCtrl::GetLineText( long lineNo ) const
+{
if (m_windowStyle & wxTE_MULTILINE)
{
- bool hasSpecialAttributes = m_font.Ok() ||
- m_foregroundColour.Ok() ||
- m_backgroundColour.Ok();
- if ( hasSpecialAttributes )
+ gint len = gtk_text_get_length( GTK_TEXT(m_text) );
+ char *text = gtk_editable_get_chars( GTK_EDITABLE(m_text), 0, len );
+
+ if (text)
{
- gtk_text_insert( GTK_TEXT(m_text),
- m_font.GetInternalFont(),
- m_foregroundColour.GetColor(),
- m_backgroundColour.GetColor(),
- text.mbc_str(), text.length());
+ wxString buf(wxT(""));
+ long i;
+ int currentLine = 0;
+ for (i = 0; currentLine != lineNo && text[i]; i++ )
+ if (text[i] == '\n')
+ currentLine++;
+ // Now get the text
+ int j;
+ for (j = 0; text[i] && text[i] != '\n'; i++, j++ )
+ buf += text[i];
+ g_free( text );
+ return buf;
}
else
{
- /* we'll insert at the last position */
- gint len = gtk_text_get_length( GTK_TEXT(m_text) );
-#if wxUSE_UNICODE
- wxWX2MBbuf buf = text.mbc_str();
- gtk_editable_insert_text( GTK_EDITABLE(m_text), buf, strlen(buf), &len );
-#else
- gtk_editable_insert_text( GTK_EDITABLE(m_text), text, text.Length(), &len );
-#endif
+ return wxEmptyString;
}
-
- /* bring editable's cursor uptodate. bug in GTK. */
- GTK_EDITABLE(m_text)->current_pos = gtk_text_get_point( GTK_TEXT(m_text) );
}
else
{
- gtk_entry_append_text( GTK_ENTRY(m_text), text.mbc_str() );
+ if (lineNo == 0) return GetValue();
+ return wxEmptyString;
}
}
-wxString wxTextCtrl::GetLineText( long lineNo ) const
-{
- if (m_windowStyle & wxTE_MULTILINE)
- {
- gint len = gtk_text_get_length( GTK_TEXT(m_text) );
- char *text = gtk_editable_get_chars( GTK_EDITABLE(m_text), 0, len );
-
- if (text)
- {
- wxString buf(wxT(""));
- long i;
- int currentLine = 0;
- for (i = 0; currentLine != lineNo && text[i]; i++ )
- if (text[i] == '\n')
- currentLine++;
- // Now get the text
- int j;
- for (j = 0; text[i] && text[i] != '\n'; i++, j++ )
- buf += text[i];
-
- g_free( text );
- return buf;
- }
- else
- return wxEmptyString;
- }
- else
- {
- if (lineNo == 0) return GetValue();
- return wxEmptyString;
- }
-}
-
void wxTextCtrl::OnDropFiles( wxDropFilesEvent &WXUNUSED(event) )
{
/* If you implement this, don't forget to update the documentation!
if (m_windowStyle & wxTE_MULTILINE)
{
gtk_text_set_editable( GTK_TEXT(m_text), enable );
+ OnParentEnable(enable);
}
else
{
return TRUE;
}
+// wxGTK-specific: called recursively by Enable,
+// to give widgets an oppprtunity to correct their colours after they
+// have been changed by Enable
+void wxTextCtrl::OnParentEnable( bool enable )
+{
+ // If we have a custom background colour, we use this colour in both
+ // disabled and enabled mode, or we end up with a different colour under the
+ // text.
+ wxColour oldColour = GetBackgroundColour();
+ if (oldColour.Ok())
+ {
+ // Need to set twice or it'll optimize the useful stuff out
+ if (oldColour == * wxWHITE)
+ SetBackgroundColour(*wxBLACK);
+ else
+ SetBackgroundColour(*wxWHITE);
+ SetBackgroundColour(oldColour);
+ }
+}
+
void wxTextCtrl::DiscardEdits()
{
m_modified = FALSE;
}
+// ----------------------------------------------------------------------------
+// max text length support
+// ----------------------------------------------------------------------------
+
+void wxTextCtrl::IgnoreNextTextUpdate()
+{
+ m_ignoreNextUpdate = TRUE;
+}
+
+bool wxTextCtrl::IgnoreTextUpdate()
+{
+ if ( m_ignoreNextUpdate )
+ {
+ m_ignoreNextUpdate = FALSE;
+
+ return TRUE;
+ }
+
+ return FALSE;
+}
+
+void wxTextCtrl::SetMaxLength(unsigned long len)
+{
+ if ( !HasFlag(wxTE_MULTILINE) )
+ {
+ gtk_entry_set_max_length(GTK_ENTRY(m_text), len);
+
+ // there is a bug in GTK+ 1.2.x: "changed" signal is emitted even if
+ // we had tried to enter more text than allowed by max text length and
+ // the text wasn't really changed
+ //
+ // to detect this and generate TEXT_MAXLEN event instead of
+ // TEXT_CHANGED one in this case we also catch "insert_text" signal
+ //
+ // when max len is set to 0 we disconnect our handler as it means that
+ // we shouldn't check anything any more
+ if ( len )
+ {
+ gtk_signal_connect( GTK_OBJECT(m_text),
+ "insert_text",
+ GTK_SIGNAL_FUNC(gtk_insert_text_callback),
+ (gpointer)this);
+ }
+ else // no checking
+ {
+ gtk_signal_disconnect_by_func
+ (
+ GTK_OBJECT(m_text),
+ GTK_SIGNAL_FUNC(gtk_insert_text_callback),
+ (gpointer)this
+ );
+ }
+ }
+}
+
void wxTextCtrl::SetSelection( long from, long to )
{
wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
#endif
}
-bool wxTextCtrl::CanCopy() const
-{
- // Can copy if there's a selection
- long 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());
-}
-
-bool wxTextCtrl::CanPaste() const
-{
- return IsEditable() ;
-}
-
// Undo/redo
void wxTextCtrl::Undo()
{
// If the return values from and to are the same, there is no
// selection.
-void wxTextCtrl::GetSelection(long* from, long* to) const
+void wxTextCtrl::GetSelection(long* fromOut, long* toOut) const
{
wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
- if (!(GTK_EDITABLE(m_text)->has_selection))
+ long from, to;
+ if ( !(GTK_EDITABLE(m_text)->has_selection) )
{
- long i = GetInsertionPoint();
- if (from) *from = i;
- if (to) *to = i;
- return;
+ from =
+ to = GetInsertionPoint();
+ }
+ else // got selection
+ {
+ from = (long) GTK_EDITABLE(m_text)->selection_start_pos;
+ to = (long) GTK_EDITABLE(m_text)->selection_end_pos;
+
+ if ( from > to )
+ {
+ // exchange them to be compatible with wxMSW
+ long tmp = from;
+ from = to;
+ to = tmp;
+ }
}
- if (from) *from = (long) GTK_EDITABLE(m_text)->selection_start_pos;
- if (to) *to = (long) GTK_EDITABLE(m_text)->selection_end_pos;
+ if ( fromOut )
+ *fromOut = from;
+ if ( toOut )
+ *toOut = to;
}
bool wxTextCtrl::IsEditable() const
{
m_updateFont = TRUE;
+ m_defaultStyle.SetFont(font);
+
ChangeFontGlobally();
}
wxString value = GetValue();
if ( !value.IsEmpty() )
{
+ m_updateFont = FALSE;
+
Clear();
AppendText(value);
-
- m_updateFont = FALSE;
}
}
ChangeFontGlobally();
}
-bool wxTextCtrl::SetForegroundColour( const wxColour &WXUNUSED(colour) )
+bool wxTextCtrl::SetForegroundColour(const wxColour& colour)
{
- wxCHECK_MSG( m_text != NULL, FALSE, wxT("invalid text ctrl") );
+ if ( !wxControl::SetForegroundColour(colour) )
+ return FALSE;
- // doesn't work
- return FALSE;
+ // update default fg colour too
+ m_defaultStyle.SetTextColour(colour);
+
+ return TRUE;
}
bool wxTextCtrl::SetBackgroundColour( const wxColour &colour )
{
wxCHECK_MSG( m_text != NULL, FALSE, wxT("invalid text ctrl") );
- wxControl::SetBackgroundColour( colour );
+ if ( !wxControl::SetBackgroundColour( colour ) )
+ return FALSE;
if (!m_widget->window)
return FALSE;
- wxColour sysbg = wxSystemSettings::GetSystemColour( wxSYS_COLOUR_BTNFACE );
+ wxColour sysbg = wxSystemSettings::GetColour( wxSYS_COLOUR_BTNFACE );
if (sysbg.Red() == colour.Red() &&
sysbg.Green() == colour.Green() &&
sysbg.Blue() == colour.Blue())
gdk_window_clear( window );
}
+ // change active background color too
+ m_defaultStyle.SetBackgroundColour( colour );
+
return TRUE;
}
+bool wxTextCtrl::SetStyle( long start, long end, const wxTextAttr& style )
+{
+ /* VERY dirty way to do that - removes the required text and re-adds it
+ with styling (FIXME) */
+ if ( m_windowStyle & wxTE_MULTILINE )
+ {
+ if ( style.IsDefault() )
+ {
+ // nothing to do
+ return TRUE;
+ }
+
+ gint l = gtk_text_get_length( GTK_TEXT(m_text) );
+
+ wxCHECK_MSG( start >= 0 && end <= l, FALSE,
+ _T("invalid range in wxTextCtrl::SetStyle") );
+
+ gint old_pos = gtk_editable_get_position( GTK_EDITABLE(m_text) );
+ char *text = gtk_editable_get_chars( GTK_EDITABLE(m_text), start, end );
+ wxString tmp(text,*wxConvCurrent);
+ g_free( text );
+
+ gtk_editable_delete_text( GTK_EDITABLE(m_text), start, end );
+ gtk_editable_set_position( GTK_EDITABLE(m_text), start );
+
+#if wxUSE_UNICODE
+ wxWX2MBbuf buf = tmp.mbc_str();
+ const char *txt = buf;
+ size_t txtlen = strlen(buf);
+#else
+ const char *txt = tmp;
+ size_t txtlen = tmp.length();
+#endif
+
+ // use the attributes from style which are set in it and fall back
+ // first to the default style and then to the text control default
+ // colours for the others
+ wxGtkTextInsert(m_text,
+ wxTextAttr::Combine(style, m_defaultStyle, this),
+ txt,
+ txtlen);
+
+ /* does not seem to help under GTK+ 1.2 !!!
+ gtk_editable_set_position( GTK_EDITABLE(m_text), old_pos ); */
+ SetInsertionPoint( old_pos );
+ return TRUE;
+ }
+ else // singe line
+ {
+ // cannot do this for GTK+'s Entry widget
+ return FALSE;
+ }
+}
+
void wxTextCtrl::ApplyWidgetStyle()
{
if (m_windowStyle & wxTE_MULTILINE)
wxSize ret( wxControl::DoGetBestSize() );
return wxSize(80, ret.y);
}
+
+// ----------------------------------------------------------------------------
+// freeze/thaw
+// ----------------------------------------------------------------------------
+
+void wxTextCtrl::Freeze()
+{
+ if ( HasFlag(wxTE_MULTILINE) )
+ {
+ gtk_text_freeze(GTK_TEXT(m_text));
+ }
+}
+
+void wxTextCtrl::Thaw()
+{
+ if ( HasFlag(wxTE_MULTILINE) )
+ {
+ GTK_TEXT(m_text)->vadj->value = 0.0;
+
+ gtk_text_thaw(GTK_TEXT(m_text));
+ }
+}
+
+// ----------------------------------------------------------------------------
+// scrolling
+// ----------------------------------------------------------------------------
+
+GtkAdjustment *wxTextCtrl::GetVAdj() const
+{
+ return HasFlag(wxTE_MULTILINE) ? GTK_TEXT(m_text)->vadj : NULL;
+}
+
+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_signal_emit_by_name(GTK_OBJECT(adj), "value_changed");
+
+ return TRUE;
+}
+
+bool wxTextCtrl::ScrollLines(int lines)
+{
+ GtkAdjustment *adj = GetVAdj();
+ if ( !adj )
+ return FALSE;
+
+ // this is hardcoded to 10 in GTK+ 1.2 (great idea)
+ static const int KEY_SCROLL_PIXELS = 10;
+
+ return DoScroll(adj, lines*KEY_SCROLL_PIXELS);
+}
+
+bool wxTextCtrl::ScrollPages(int pages)
+{
+ GtkAdjustment *adj = GetVAdj();
+ if ( !adj )
+ return FALSE;
+
+ return DoScroll(adj, (int)ceil(pages*adj->page_increment));
+}
+
projects / wxWidgets.git / blobdiff