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{ $Id$}
{
*****************************************************************************
* GtkWSCheckLst.pp *
* ---------------- *
* *
* *
*****************************************************************************
*****************************************************************************
This file is part of the Lazarus Component Library (LCL)
See the file COPYING.modifiedLGPL.txt, included in this distribution,
for details about the license.
*****************************************************************************
}
unit GtkWSCheckLst;
{$mode objfpc}{$H+}
interface
uses
CheckLst, StdCtrls, WSCheckLst, WSLCLClasses,
{$IFDEF gtk2}
glib2, gdk2pixbuf, gdk2, gtk2, Pango,
{$ELSE}
glib, gdk, gtk, gdkpixbuf, GtkFontCache,
{$ENDIF}
GtkInt, Classes, GTKWinApiWindow, gtkglobals, gtkproc;
type
{ TGtkWSCustomCheckListBox }
TGtkWSCustomCheckListBox = class(TWSCustomCheckListBox)
published
class function GetState(const ACheckListBox: TCustomCheckListBox;
const AIndex: integer): TCheckBoxState; override;
class procedure SetState(const ACheckListBox: TCustomCheckListBox;
const AIndex: integer; const AState: TCheckBoxState); override;
end;
implementation
class function TGtkWSCustomCheckListBox.GetState(
const ACheckListBox: TCustomCheckListBox; const AIndex: integer
): TCheckBoxState;
var
Widget : PGtkWidget; // pointer to gtk-widget (local use when neccessary)
ChildWidget: PGtkWidget; // generic pointer to a child gtk-widget
// (local use when neccessary)
ListItem : PGtkListItem;
begin
Result := cbUnChecked;
{ Get the child in question of that index }
Widget := GetWidgetInfo(Pointer(ACheckListBox.Handle),True)^.CoreWidget;
ListItem := g_list_nth_data(PGtkList(Widget)^.children, AIndex);
if ListItem <> nil then
begin
ChildWidget := PPointer(PGTKBox(PGtkBin(ListItem)^.child)^.Children^.Data)^;
if (ChildWidget <> nil) then
begin
if (gtk_object_get_data(PgtkObject(ChildWidget), 'Grayed') <> nil) then
Result:=cbGrayed
else
if gtk_toggle_button_get_active(PGTKToggleButton(ChildWidget)) then
Result := cbChecked
else
Result := cbUnChecked;
end;
end;
end;
class procedure TGtkWSCustomCheckListBox.SetState(
const ACheckListBox: TCustomCheckListBox; const AIndex: integer;
const AState: TCheckBoxState);
var
Widget, ChildWidget: PGtkWidget;
ListItem: PGtkListItem;
begin
Widget := GetWidgetInfo(Pointer(ACheckListBox.Handle), True)^.CoreWidget;
ListItem := g_list_nth_data(PGtkList(Widget)^.children, AIndex);
if ListItem <> nil then
begin
ChildWidget := PPointer(PGTKBox(PGtkBin(ListItem)^.child)^.Children^.Data)^;
if (ChildWidget <> nil) then
begin
LockOnChange(PGtkObject(ChildWidget), 1);
if AState = cbGrayed then
gtk_object_set_data(PGtkObject(ChildWidget), 'Grayed', ChildWidget)
else
gtk_object_set_data(PGtkObject(ChildWidget), 'Grayed', nil);
gtk_toggle_button_set_active(PGtkToggleButton(ChildWidget), AState = cbChecked);
LockOnChange(PGtkObject(ChildWidget), -1);
end;
end;
end;
end.
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