#include "wx/textctrl.h"
#include "wx/utils.h"
#include "wx/intl.h"
+#include "wx/log.h"
#include "wx/settings.h"
+#include "wx/panel.h"
#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;
+// ----------------------------------------------------------------------------
+// "insert_text" for GtkEntry
+// ----------------------------------------------------------------------------
+
+static void
+gtk_insert_text_callback(GtkEditable *editable,
+ const gchar *new_text,
+ gint new_text_length,
+ gint *position,
+ wxTextCtrl *win)
+{
+ if (g_isIdle)
+ wxapp_install_idle_handler();
+
+ // 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 );
+ }
+}
+
//-----------------------------------------------------------------------------
// "changed"
//-----------------------------------------------------------------------------
static void
gtk_text_changed_callback( GtkWidget *WXUNUSED(widget), wxTextCtrl *win )
{
+ if ( win->IgnoreTextUpdate() )
+ return;
+
if (!win->m_hasVMT) return;
if (g_isIdle)
wxapp_install_idle_handler();
win->SetModified();
+ win->UpdateFontIfNeeded();
wxCommandEvent event( wxEVT_COMMAND_TEXT_UPDATED, win->GetId() );
- event.SetString( win->GetValue() );
event.SetEventObject( win );
+ event.SetString( win->GetValue() );
win->GetEventHandler()->ProcessEvent( event );
}
EVT_UPDATE_UI(wxID_REDO, wxTextCtrl::OnUpdateRedo)
END_EVENT_TABLE()
-wxTextCtrl::wxTextCtrl()
+void wxTextCtrl::Init()
{
+ m_ignoreNextUpdate =
m_modified = FALSE;
+ m_updateFont = FALSE;
+ m_text =
+ m_vScrollbar = (GtkWidget *)NULL;
}
-wxTextCtrl::wxTextCtrl( wxWindow *parent, wxWindowID id, const wxString &value,
- const wxPoint &pos, const wxSize &size,
- int style, const wxValidator& validator, const wxString &name )
+wxTextCtrl::wxTextCtrl( wxWindow *parent,
+ wxWindowID id,
+ const wxString &value,
+ const wxPoint &pos,
+ const wxSize &size,
+ long style,
+ const wxValidator& validator,
+ const wxString &name )
{
- m_modified = FALSE;
+ Init();
+
Create( parent, id, value, pos, size, style, validator, name );
}
-bool wxTextCtrl::Create( wxWindow *parent, wxWindowID id, const wxString &value,
- const wxPoint &pos, const wxSize &size,
- int style, const wxValidator& validator, const wxString &name )
+bool wxTextCtrl::Create( wxWindow *parent,
+ wxWindowID id,
+ const wxString &value,
+ const wxPoint &pos,
+ const wxSize &size,
+ long style,
+ const wxValidator& validator,
+ const wxString &name )
{
m_needParent = TRUE;
m_acceptsFocus = TRUE;
!CreateBase( parent, id, pos, size, style, validator, name ))
{
wxFAIL_MSG( wxT("wxTextCtrl creation failed") );
- return FALSE;
+ return FALSE;
}
m_text = gtk_entry_new();
}
- wxSize newSize = size;
- if (newSize.x == -1) newSize.x = 80;
- if (newSize.y == -1) newSize.y = 26;
- SetSize( newSize.x, newSize.y );
-
m_parent->DoAddChild( this );
+
+ m_focusWidget = m_text;
PostCreation();
+ SetFont( parent->GetFont() );
+
+ wxSize size_best( DoGetBestSize() );
+ wxSize new_size( size );
+ if (new_size.x == -1)
+ new_size.x = size_best.x;
+ if (new_size.y == -1)
+ new_size.y = size_best.y;
+ if ((new_size.x != size.x) || (new_size.y != size.y))
+ SetSize( new_size.x, new_size.y );
+
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",
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") );
- wxString tmp = wxT("");
- if (!value.IsNull()) tmp = value;
if (m_windowStyle & wxTE_MULTILINE)
{
gint len = gtk_text_get_length( GTK_TEXT(m_text) );
gtk_editable_delete_text( GTK_EDITABLE(m_text), 0, len );
len = 0;
#if wxUSE_UNICODE
- wxWX2MBbuf tmpbuf = tmp.mbc_str();
+ wxWX2MBbuf tmpbuf = value.mbc_str();
gtk_editable_insert_text( GTK_EDITABLE(m_text), tmpbuf, strlen(tmpbuf), &len );
#else
- gtk_editable_insert_text( GTK_EDITABLE(m_text), tmp.mbc_str(), tmp.Length(), &len );
+ gtk_editable_insert_text( GTK_EDITABLE(m_text), value.mbc_str(), value.Length(), &len );
#endif
}
else
{
- gtk_entry_set_text( GTK_ENTRY(m_text), tmp.mbc_str() );
+ gtk_entry_set_text( GTK_ENTRY(m_text), value.mbc_str() );
}
+
+ // GRG, Jun/2000: Changed this after a lot of discussion in
+ // the lists. wxWindows 2.2 will have a set of flags to
+ // customize this behaviour.
+ SetInsertionPoint(0);
+
+ m_modified = FALSE;
}
void wxTextCtrl::WriteText( const wxString &text )
{
wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
- if (text.IsEmpty()) return;
+ if ( text.empty() )
+ return;
- if (m_windowStyle & wxTE_MULTILINE)
+#if wxUSE_UNICODE
+ wxWX2MBbuf buf = text.mbc_str();
+ const char *txt = buf;
+ size_t txtlen = strlen(buf);
+#else
+ const char *txt = text;
+ size_t txtlen = text.length();
+#endif
+
+ if ( m_windowStyle & wxTE_MULTILINE )
{
/* 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
+ // if we have any special style, use it
+ if ( !m_defaultStyle.IsDefault() )
+ {
+ GdkFont *font = m_defaultStyle.HasFont()
+ ? m_defaultStyle.GetFont().GetInternalFont()
+ : NULL;
+
+ GdkColor *colFg = m_defaultStyle.HasTextColour()
+ ? m_defaultStyle.GetTextColour().GetColor()
+ : NULL;
+
+ GdkColor *colBg = m_defaultStyle.HasBackgroundColour()
+ ? m_defaultStyle.GetBackgroundColour().GetColor()
+ : NULL;
+
+ gtk_text_insert( GTK_TEXT(m_text), font, colFg, colBg, txt, txtlen );
+ }
+ else // no style
+ {
+ gtk_editable_insert_text( GTK_EDITABLE(m_text), txt, txtlen, &len );
+ }
/* bring editable's cursor uptodate. bug in GTK. */
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 */
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. */
GTK_EDITABLE(m_text)->current_pos += text.Len();
{
wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
- if (text.IsEmpty()) return;
+ if ( text.empty() )
+ return;
+
+#if wxUSE_UNICODE
+ wxWX2MBbuf buf = text.mbc_str();
+ const char *txt = buf;
+ size_t txtlen = strlen(buf);
+#else
+ const char *txt = text;
+ size_t txtlen = text.length();
+#endif
if (m_windowStyle & wxTE_MULTILINE)
{
- bool hasSpecialAttributes = m_font.Ok() ||
- m_foregroundColour.Ok() ||
- m_backgroundColour.Ok();
- if ( hasSpecialAttributes )
+ if ( !m_defaultStyle.IsDefault() )
{
- gtk_text_insert( GTK_TEXT(m_text),
- m_font.GetInternalFont(),
- m_foregroundColour.GetColor(),
- m_backgroundColour.GetColor(),
- text.mbc_str(), text.length());
+ wxFont font = m_defaultStyle.HasFont() ? m_defaultStyle.GetFont()
+ : m_font;
+ GdkFont *fnt = font.Ok() ? font.GetInternalFont() : NULL;
+
+ wxColour col = m_defaultStyle.HasTextColour()
+ ? m_defaultStyle.GetTextColour()
+ : m_foregroundColour;
+ GdkColor *colFg = col.Ok() ? col.GetColor() : NULL;
+ col = m_defaultStyle.HasBackgroundColour()
+ ? m_defaultStyle.GetBackgroundColour()
+ : m_backgroundColour;
+ GdkColor *colBg = col.Ok() ? col.GetColor() : NULL;
+
+ gtk_text_insert( GTK_TEXT(m_text), fnt, colFg, colBg, txt, txtlen );
}
- else
+ else // no style
{
/* 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
+ gtk_editable_insert_text( GTK_EDITABLE(m_text), txt, txtlen, &len );
}
/* bring editable's cursor uptodate. bug in GTK. */
GTK_EDITABLE(m_text)->current_pos = gtk_text_get_point( GTK_TEXT(m_text) );
}
- else
+ else // single line
{
- gtk_entry_append_text( GTK_ENTRY(m_text), text.mbc_str() );
+ gtk_entry_append_text( GTK_ENTRY(m_text), txt );
}
}
gtk_entry_set_editable( GTK_ENTRY(m_text), editable );
}
+bool wxTextCtrl::Enable( bool enable )
+{
+ if (!wxWindowBase::Enable(enable))
+ {
+ // nothing to do
+ return FALSE;
+ }
+
+ if (m_windowStyle & wxTE_MULTILINE)
+ {
+ gtk_text_set_editable( GTK_TEXT(m_text), enable );
+ OnParentEnable(enable);
+ }
+ else
+ {
+ gtk_widget_set_sensitive( m_text, enable );
+ }
+
+ 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") );
+ if ( (m_windowStyle & wxTE_MULTILINE) &&
+ !GTK_TEXT(m_text)->line_start_cache )
+ {
+ // tell the programmer that it didn't work
+ wxLogDebug(_T("Can't call SetSelection() before realizing the control"));
+ return;
+ }
+
gtk_editable_select_region( GTK_EDITABLE(m_text), (gint)from, (gint)to );
}
#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) ;
-}
-
-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) )
{
- if (from) *from = 0;
- if (to) *to = 0;
- 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) *from = (long) GTK_EDITABLE(m_text)->selection_start_pos;
- if (to) *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 ( fromOut )
+ *fromOut = from;
+ if ( toOut )
+ *toOut = to;
}
bool wxTextCtrl::IsEditable() const
{
wxCommandEvent event(wxEVT_COMMAND_TEXT_ENTER, m_windowId);
event.SetEventObject(this);
+ event.SetString(GetValue());
if (GetEventHandler()->ProcessEvent(event)) return;
}
wxWindow *top_frame = m_parent;
while (top_frame->GetParent() && !(top_frame->IsTopLevel()))
top_frame = top_frame->GetParent();
- GtkWindow *window = GTK_WINDOW(top_frame->m_widget);
-
- if (window->default_widget)
+ GtkWindow *window = GTK_WINDOW(top_frame->m_widget);
+
+ if (window->default_widget)
{
gtk_widget_activate (window->default_widget);
- return;
- }
+ return;
+ }
}
key_event.Skip();
if ( m_windowStyle & wxTE_MULTILINE )
{
- // for compatibility with other ports: the font is a global controls
- // characteristic, so change the font globally
- wxString value = GetValue();
- if ( !value.IsEmpty() )
- {
- Clear();
+ m_updateFont = TRUE;
- AppendText(value);
- }
+ m_defaultStyle.SetFont(font);
+
+ ChangeFontGlobally();
}
return TRUE;
}
-bool wxTextCtrl::SetForegroundColour( const wxColour &WXUNUSED(colour) )
+void wxTextCtrl::ChangeFontGlobally()
{
- wxCHECK_MSG( m_text != NULL, FALSE, wxT("invalid text ctrl") );
+ // this method is very inefficient and hence should be called as rarely as
+ // possible!
+ wxASSERT_MSG( (m_windowStyle & wxTE_MULTILINE) && m_updateFont,
+ _T("shouldn't be called for single line controls") );
- // doesn't work
- return FALSE;
+ wxString value = GetValue();
+ if ( !value.IsEmpty() )
+ {
+ m_updateFont = FALSE;
+
+ Clear();
+ AppendText(value);
+ }
+}
+
+void wxTextCtrl::UpdateFontIfNeeded()
+{
+ if ( m_updateFont )
+ ChangeFontGlobally();
+}
+
+bool wxTextCtrl::SetForegroundColour(const wxColour& colour)
+{
+ if ( !wxControl::SetForegroundColour(colour) )
+ 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;
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
+
+ GdkFont *font = style.HasFont()
+ ? style.GetFont().GetInternalFont()
+ : NULL;
+
+ GdkColor *colFg = style.HasTextColour()
+ ? style.GetTextColour().GetColor()
+ : NULL;
+
+ GdkColor *colBg = style.HasBackgroundColour()
+ ? style.GetBackgroundColour().GetColor()
+ : NULL;
+
+ gtk_text_insert( GTK_TEXT(m_text), font, colFg, colBg, 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)
if (cursor.Ok())
{
GdkWindow *window = (GdkWindow*) NULL;
- if (HasFlag(wxTE_MULTILINE))
+ if (HasFlag(wxTE_MULTILINE))
window = GTK_TEXT(m_text)->text_area;
else
window = GTK_ENTRY(m_text)->text_area;
-
+
if (window)
gdk_window_set_cursor( window, cursor.GetCursor() );
if ((window) && !(GTK_WIDGET_NO_WINDOW(m_widget)))
gdk_window_set_cursor( window, cursor.GetCursor() );
}
+
+ UpdateWindowUI();
}
+
+wxSize wxTextCtrl::DoGetBestSize() const
+{
+ // FIXME should be different for multi-line controls...
+ 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