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525 lines
17 KiB
ObjectPascal
525 lines
17 KiB
ObjectPascal
{ $Id$}
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{
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*****************************************************************************
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* Gtk2WSMenus.pp *
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* -------------- *
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* *
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* *
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*****************************************************************************
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*****************************************************************************
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* *
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* This file is part of the Lazarus Component Library (LCL) *
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* *
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* See the file COPYING.modifiedLGPL.txt, included in this distribution, *
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* for details about the copyright. *
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* *
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* This program is distributed in the hope that it will be useful, *
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* but WITHOUT ANY WARRANTY; without even the implied warranty of *
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. *
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* *
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*****************************************************************************
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}
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unit Gtk2WSMenus;
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{$mode objfpc}{$H+}
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interface
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uses
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glib2, gdk2pixbuf, gdk2, gtk2, Pango,
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GtkInt, GtkProc, GtkGlobals, GtkDef, GtkExtra, GtkWSMenus,
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Classes, InterfaceBase, Types, LCLProc, LCLType, WSMenus, WSLCLClasses,
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LMessages, Graphics, Menus, Forms, LCLIntf;
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type
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{ TGtk2WSMenuItem }
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TGtk2WSMenuItem = class(TWSMenuItem)
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protected
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class procedure SetCallbacks(const AGtkWidget: PGtkWidget; const AWidgetInfo: PWidgetInfo);
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published
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class procedure AttachMenu(const AMenuItem: TMenuItem); override;
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class function CreateHandle(const AMenuItem: TMenuItem): HMENU; override;
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class procedure DestroyHandle(const AMenuItem: TMenuItem); override;
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class procedure SetCaption(const AMenuItem: TMenuItem; const ACaption: string); override;
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class procedure SetShortCut(const AMenuItem: TMenuItem; const OldShortCut, NewShortCut: TShortCut); override;
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class procedure SetVisible(const AMenuItem: TMenuItem; const Visible: boolean); override;
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class function SetCheck(const AMenuItem: TMenuItem; const Checked: boolean): boolean; override;
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class function SetEnable(const AMenuItem: TMenuItem; const Enabled: boolean): boolean; override;
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class function SetRadioItem(const AMenuItem: TMenuItem; const RadioItem: boolean): boolean; override;
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class function SetRightJustify(const AMenuItem: TMenuItem; const Justified: boolean): boolean; override;
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class procedure UpdateMenuIcon(const AMenuItem: TMenuItem; const HasIcon: Boolean; const AIcon: TBitmap); override;
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end;
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{ TGtk2WSMenu }
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TGtk2WSMenu = class(TGtkWSMenu)
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published
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class procedure SetBiDiMode(const AMenu: TMenu; UseRightToLeftAlign, UseRightToLeftReading : Boolean); override;
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end;
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{ TGtk2WSMainMenu }
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TGtk2WSMainMenu = class(TWSMainMenu)
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published
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end;
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{ TGtk2WSPopupMenu }
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TGtk2WSPopupMenu = class(TWSPopupMenu)
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published
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end;
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implementation
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{$I gtkdefines.inc}
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function Gtk2MenuItemButtonPress(widget: PGtkWidget; event: PGdkEventButton;
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user_data: gpointer): gboolean; cdecl;
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var
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Parent: PGtkWidget;
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WidgetInfo: PWidgetInfo;
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begin
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Result := False;
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if (event^._type = GDK_BUTTON_PRESS) then
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begin
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Parent := gtk_widget_get_parent(Widget);
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if (Parent <> nil) and GTK_IS_MENU_BAR(Parent) then
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begin
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if (gtk_menu_item_get_submenu(PGtkMenuItem(Widget)) = nil) then
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begin
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WidgetInfo := GetWidgetInfo(Widget);
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if Assigned(TMenuItem(WidgetInfo^.LCLObject).OnClick) then
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gtk_menu_item_activate(PGtkMenuItem(Widget));
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end;
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end;
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end;
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end;
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function Gtk2MenuItemActivate(widget: PGtkWidget; data: gPointer) : GBoolean; cdecl;
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var
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Mess: TLMActivate;
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LCLMenuItem: TMenuItem;
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begin
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Result:= True;
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{$IFDEF EventTrace}
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EventTrace('activate', data);
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{$ENDIF}
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ResetDefaultIMContext;
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if LockOnChange(PgtkObject(Widget),0) > 0 then Exit;
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LCLMenuItem := TMenuItem(Data);
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// the gtk fires activate for radio buttons when unchecking them
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// the LCL expects only uncheck
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if LCLMenuItem.RadioItem
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and GtkWidgetIsA(Widget, GTK_TYPE_CHECK_MENU_ITEM)
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and (not gtk_check_menu_item_get_active(PGTKCheckMenuItem(Widget))) then Exit;
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FillChar(Mess,SizeOf(Mess),#0);
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Mess.Msg := LM_ACTIVATE;
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Mess.Active:=true;
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Mess.Minimized:=false;
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Mess.ActiveWindow:=0;
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Mess.Result := 0;
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DeliverMessage(Data, Mess);
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Result := CallBackDefaultReturn;
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end;
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function Gtk2MenuItemToggled(AMenuItem: PGTKCheckMenuItem;
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AData: gPointer): GBoolean; cdecl;
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var
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LCLMenuItem: TMenuItem;
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Mess: TLMessage;
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b: Boolean;
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w: PGtkWidget;
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WidgetInfo: PWidgetInfo;
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begin
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Result := CallBackDefaultReturn;
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{$IFDEF EventTrace}
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EventTrace('toggled', AData);
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{$ENDIF}
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if LockOnChange(PgtkObject(AMenuItem),0) > 0 then Exit;
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LCLMenuItem := TMenuItem(AData);
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if (csDesigning in LCLMenuItem.ComponentState) then
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exit;
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w := gtk_get_event_widget(gtk_get_current_event);
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if not GTK_IS_RADIO_MENU_ITEM(w) then
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exit;
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b := gtk_check_menu_item_get_active(AMenuItem);
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if not LCLMenuItem.Checked then
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g_signal_stop_emission_by_name(AMenuItem, 'toggled')
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else
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g_signal_stop_emission_by_name(AMenuItem, 'activate');
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if b <> LCLMenuItem.Checked then
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gtk_check_menu_item_set_active(AMenuItem, LCLMenuItem.Checked);
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{we must trigger OnClick() somehow, since we stopped signals}
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if b and (w <> nil) and (w <> PGtkWidget(AMenuItem)) then
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begin
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WidgetInfo := GetWidgetInfo(w);
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FillChar(Mess,SizeOf(Mess),#0);
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Mess.Msg := LM_ACTIVATE;
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WidgetInfo^.LCLObject.Dispatch(Mess);
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end;
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end;
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function Gtk2MenuItemSelect(item: Pointer; AMenuItem: TMenuItem): GBoolean; cdecl;
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begin
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AMenuItem.IntfDoSelect;
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Result := CallBackDefaultReturn;
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end;
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procedure Gtk2MenuItemToggleSizeRequest(AMenuItem: PGtkMenuItem; requisition: Pgint; LCLItem: TMenuItem); cdecl;
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var
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spacing: guint;
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IconWidth: Integer;
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begin
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if LCLItem.HasIcon then
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begin
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IconWidth := LCLItem.GetIconSize.X;
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if IconWidth > 0 then
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begin
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gtk_widget_style_get(PGtkWidget(AMenuItem), 'toggle-spacing', [@spacing, nil]);
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requisition^ := IconWidth + spacing;
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end
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else
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requisition^ := 0;
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end
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else
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GTK_MENU_ITEM_GET_CLASS(AMenuItem)^.toggle_size_request(AMenuItem, requisition);
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end;
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procedure Gtk2MenuItemSizeRequest(AMenuItem: PGtkMenuItem; requisition: PGtkRequisition; LCLItem: TMenuItem); cdecl;
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var
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IconHeight: Integer;
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begin
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GTK_WIDGET_GET_CLASS(AMenuItem)^.size_request(PGtkWidget(AMenuItem), requisition);
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IconHeight := LCLItem.GetIconSize.Y;
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if requisition^.height < IconHeight then
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requisition^.height := IconHeight;
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end;
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function Gtk2MenuItemDeselect(item: Pointer; AMenuItem: TMenuItem): GBoolean; cdecl;
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begin
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Application.Hint := '';
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Result := CallBackDefaultReturn;
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end;
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{ TGtk2WSMenuItem }
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class procedure TGtk2WSMenuItem.SetCallbacks(const AGtkWidget: PGtkWidget;
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const AWidgetInfo: PWidgetInfo);
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begin
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// connect activate signal (i.e. clicked)
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{button-press-event is needed by root menu items which have not
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submenu, but OnClick() is assigned - fix for #15986 }
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g_signal_connect_after(PGTKObject(AGtkWidget), 'button-press-event',
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TGTKSignalFunc(@Gtk2MenuItemButtonPress), AWidgetInfo^.LCLObject);
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g_signal_connect(PGTKObject(AGtkWidget), 'activate',
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TGTKSignalFunc(@Gtk2MenuItemActivate), AWidgetInfo^.LCLObject);
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g_signal_connect(PGTKObject(AGtkWidget), 'select',
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TGTKSignalFunc(@Gtk2MenuItemSelect), AWidgetInfo^.LCLObject);
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g_signal_connect(PGTKObject(AGtkWidget), 'deselect',
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TGTKSignalFunc(@Gtk2MenuItemDeselect), AWidgetInfo^.LCLObject);
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g_signal_connect(PGTKObject(AGtkWidget), 'toggle-size-request',
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TGTKSignalFunc(@Gtk2MenuItemToggleSizeRequest), AWidgetInfo^.LCLObject);
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g_signal_connect(PGTKObject(AGtkWidget), 'size-request',
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TGTKSignalFunc(@Gtk2MenuItemSizeRequest), AWidgetInfo^.LCLObject);
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end;
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class procedure TGtk2WSMenuItem.AttachMenu(const AMenuItem: TMenuItem);
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var
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//AccelKey: Integer;
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//AccelGroup: PGTKAccelGroup;
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MenuItem, ParentMenuWidget, ContainerMenu: PGtkWidget;
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begin
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//DebugLn('TGtkWidgetSet.AttachMenu START ',AMenuItem.Name,':',AMenuItem.ClassName,' Parent=',AMenuItem.Parent.Name,':',AMenuItem.Parent.ClassName);
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with AMenuItem do
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begin
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MenuItem := PGtkWidget(Handle);
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if MenuItem=nil then
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RaiseGDBException('TGtkWidgetSet.AttachMenu Handle=0');
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ParentMenuWidget := PGtkWidget(Parent.Handle);
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if ParentMenuWidget=nil then
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RaiseGDBException('TGtkWidgetSet.AttachMenu ParentMenuWidget=nil');
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if GTK_IS_MENU_BAR(ParentMenuWidget) then
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begin
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// mainmenu (= a menu bar)
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ContainerMenu := ParentMenuWidget;
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gtk_menu_bar_insert(ParentMenuWidget, MenuItem, AMenuItem.MenuVisibleIndex);
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end
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else
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begin
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// if it is a menu
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if GTK_IS_MENU(ParentMenuWidget) then
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ContainerMenu := ParentMenuWidget
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else // menu item
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ContainerMenu := PGtkWidget(gtk_object_get_data(PGtkObject(ParentMenuWidget),
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'ContainerMenu')); // find the menu container
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if ContainerMenu = nil then
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begin
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if (GetParentMenu is TPopupMenu) and (Parent.Parent=nil) then
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begin
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ContainerMenu := PGtkWidget(GetParentMenu.Handle);
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gtk_object_set_data(PGtkObject(ContainerMenu), 'ContainerMenu',
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ContainerMenu);
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end else
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begin
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ContainerMenu := gtk_menu_new;
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gtk_object_set_data(PGtkObject(ParentMenuWidget), 'ContainerMenu',
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ContainerMenu);
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gtk_menu_item_set_submenu(PGTKMenuItem(ParentMenuWidget), ContainerMenu);
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end;
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end;
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gtk_menu_insert(ContainerMenu, MenuItem, AMenuItem.MenuVisibleIndex);
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end;
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if GtkWidgetIsA(MenuItem, GTK_TYPE_RADIO_MENU_ITEM) then
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TGtkWidgetSet(WidgetSet).RegroupMenuItem(HMENU(PtrUInt(MenuItem)), GroupIndex);
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end;
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//DebugLn('TGtkWidgetSet.AttachMenu END ',AMenuItem.Name,':',AMenuItem.ClassName);
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end;
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class function TGtk2WSMenuItem.CreateHandle(const AMenuItem: TMenuItem): HMENU;
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var
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Widget: PGtkWidget;
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WidgetInfo: PWidgetInfo;
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begin
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// create the menuitem widget (normal, check or radio)
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if AMenuItem.Caption = cLineCaption then // create separator
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Widget := gtk_menu_item_new
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else
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if AMenuItem.RadioItem and not AMenuItem.HasIcon then
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Widget := gtk_radio_menu_item_new(nil)
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else
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if AMenuItem.IsCheckItem or AMenuItem.HasIcon then
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Widget := gtk_check_menu_item_new
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else
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Widget := gtk_menu_item_new;
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WidgetInfo := CreateWidgetInfo(Widget);
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WidgetInfo^.LCLObject := AMenuItem;
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if GtkWidgetIsA(Widget, GTK_TYPE_CHECK_MENU_ITEM) then
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begin
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// check or radio
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// set 'ShowAlwaysCheckable'
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gtk_check_menu_item_set_show_toggle(PGtkCheckMenuItem(Widget),
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AMenuItem.ShowAlwaysCheckable);
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// set 'Checked'
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gtk_check_menu_item_set_active(PGtkCheckMenuItem(Widget),
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AMenuItem.Checked);
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g_signal_connect(PGTKObject(Widget), 'toggled',
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TGTKSignalFunc(@Gtk2MenuItemToggled), Pointer(AMenuItem));
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end;
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// set attributes (enabled and rightjustify)
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gtk_widget_set_sensitive(Widget,
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AMenuItem.Enabled and (AMenuItem.Caption <> cLineCaption));
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if AMenuItem.RightJustify then
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gtk_menu_item_right_justify(PGtkMenuItem(Widget));
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// create the hbox containing the label and the icon
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UpdateInnerMenuItem(AMenuItem, Widget);
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SetCallbacks(Widget, WidgetInfo);
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gtk_widget_show(Widget);
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{$IFDEF DebugLCLComponents}
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DebugGtkWidgets.MarkCreated(Widget, dbgsName(AMenuItem));
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{$ENDIF}
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Result := HMENU(PtrUInt(Widget));
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end;
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class procedure TGtk2WSMenuItem.DestroyHandle(const AMenuItem: TMenuItem);
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begin
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{ TODO: cleanup }
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TGtkWidgetSet(WidgetSet).DestroyLCLComponent(AMenuItem);
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end;
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class procedure TGtk2WSMenuItem.SetCaption(const AMenuItem: TMenuItem;
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const ACaption: string);
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var
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MenuItemWidget: PGtkWidget;
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begin
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if not WSCheckMenuItem(AMenuItem, 'SetCaption') then
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Exit;
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MenuItemWidget:=PGtkWidget(AMenuItem.Handle);
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UpdateInnerMenuItem(AMenuItem,MenuItemWidget);
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gtk_widget_set_sensitive(PGtkWidget(AMenuItem.Handle),
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AMenuItem.Enabled and (ACaption <> cLineCaption));
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end;
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class procedure TGtk2WSMenuItem.SetShortCut(const AMenuItem: TMenuItem;
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const OldShortCut, NewShortCut: TShortCut);
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//var
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//MenuWidget: PGtkMenuItem;
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//accel_path: String;
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//CurKey: Word;
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//CurShift: TShiftState;
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begin
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if not WSCheckMenuItem(AMenuItem, 'SetShortCut') then Exit;
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//DebugLn(['TGtkWSMenuItem.SetShortCut ',dbgsName(AMenuItem),' ',ShortCutToText(NewShortCut)]);
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// Temporary: At least it writes the names of the shortcuts
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UpdateInnerMenuItem(AMenuItem, PGTKWidget(AMenuItem.Handle), NewShortCut);
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{ // Gets the inner widgets. They should already be created by now
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MenuWidget := PGtkMenuItem(AMenuItem.Handle);
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if (MenuWidget=nil) then Exit;
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// Converts the shortcut to a gtk friendly format and sets it
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ShortCutToKey(NewShortCut, CurKey, CurShift);
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accel_path := 'LCLApp/Menu/' + GetAcceleratorString(CurKey, CurShift);
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gtk_accel_map_add_entry(accel_path, CurKey, ShiftToGdkModifierType);
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gtk_menu_item_set_accel_path(); }
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end;
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class procedure TGtk2WSMenuItem.SetVisible(const AMenuItem: TMenuItem;
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const Visible: boolean);
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var
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MenuItemWidget: PGtkWidget;
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begin
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if not WSCheckMenuItem(AMenuItem, 'SetVisible') then
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Exit;
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MenuItemWidget := PGtkWidget(AMenuItem.Handle);
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if gtk_widget_visible(MenuItemWidget) = Visible then
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Exit;
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if Visible then
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gtk_widget_show(MenuItemWidget)
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else
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gtk_widget_hide(MenuItemWidget);
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end;
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class function TGtk2WSMenuItem.SetCheck(const AMenuItem: TMenuItem;
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const Checked: boolean): boolean;
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var
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IsRadio: Boolean;
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Group: PGSList;
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Item: Pointer;
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begin
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Result:=false;
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if not WSCheckMenuItem(AMenuItem, 'SetCheck') then
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Exit;
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Item := Pointer(AMenuItem.Handle);
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IsRadio := gtk_is_radio_menu_item(Item);
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if IsRadio or gtk_is_check_menu_item(Item)
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then begin
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if IsRadio
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then begin
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Group := gtk_radio_menu_item_group(Item);
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LockRadioGroupOnChange(Group, +1);
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end
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else LockOnChange(Item, +1);
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gtk_check_menu_item_set_active(Item, Checked);
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if IsRadio
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then LockRadioGroupOnChange(Group, -1)
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else LockOnChange(Item, -1);
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Result := True;
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end
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else begin
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AMenuItem.RecreateHandle;
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Result := True;
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end;
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end;
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class function TGtk2WSMenuItem.SetEnable(const AMenuItem: TMenuItem;
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const Enabled: boolean): boolean;
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begin
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Result := False;
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if not WSCheckMenuItem(AMenuItem, 'SetEnable') then
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Exit;
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gtk_widget_set_sensitive(PGtkWidget(AMenuItem.Handle),
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Enabled and (AMenuItem.Caption <> cLineCaption));
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Result := True;
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end;
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class function TGtk2WSMenuItem.SetRadioItem(const AMenuItem: TMenuItem;
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const RadioItem: boolean): boolean;
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begin
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AMenuItem.RecreateHandle;
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Result := True;
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end;
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class function TGtk2WSMenuItem.SetRightJustify(const AMenuItem: TMenuItem;
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const Justified: boolean): boolean;
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var
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MenuItemWidget: PGtkMenuItem;
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begin
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Result := False;
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if not WSCheckMenuItem(AMenuItem, 'SetRightJustify') then
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Exit;
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MenuItemWidget := PGtkMenuItem(AMenuItem.Handle);
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gtk_menu_item_set_right_justified(MenuItemWidget, Justified);
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gtk_widget_queue_resize(GTK_WIDGET(MenuItemWidget));
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Result := True;
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end;
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class procedure TGtk2WSMenuItem.UpdateMenuIcon(const AMenuItem: TMenuItem;
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const HasIcon: Boolean; const AIcon: TBitmap);
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begin
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if not WSCheckMenuItem(AMenuItem, 'UpdateMenuIcon') then
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Exit;
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if gtk_is_check_menu_item(Pointer(AMenuItem.Handle)) <> HasIcon then
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AMenuItem.RecreateHandle;
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end;
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{ TGtk2WSMenu }
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class procedure TGtk2WSMenu.SetBiDiMode(const AMenu : TMenu;
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UseRightToLeftAlign, UseRightToLeftReading : Boolean);
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const
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WidgetDirection : array[boolean] of longint = (GTK_TEXT_DIR_LTR, GTK_TEXT_DIR_RTL);
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{$ifdef GTK_2_8}
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const
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MenuDirection : array[Boolean] of Longint = (
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GTK_PACK_DIRECTION_LTR,
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GTK_PACK_DIRECTION_RTL);
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{$endif}
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procedure Switch(AMenuItem: TMenuItem; Flip: Boolean);
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var
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i: Integer;
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begin
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if Flip then
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begin
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gtk_widget_set_direction(PGtkWidget(AMenuItem.Handle), WidgetDirection[UseRightToLeftAlign]);
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UpdateInnerMenuItem(AMenuItem, PGtkWidget(AMenuItem.Handle));
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end;
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for i := 0 to AMenuItem.Count -1 do
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Switch(AMenuItem[i], True);
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end;
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begin
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{$ifdef GTK_2_8}
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gtk_menu_bar_set_pack_direction(PGtkMenuBar(AMenu.Handle), MenuDirection[UseRightToLeftAlign]);
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gtk_menu_bar_set_child_pack_direction(PGtkMenuBar(AMenu.Handle), MenuDirection[UseRightToLeftAlign]);
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{$endif}
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//gtk_widget_set_direction(PGtkWidget(AMenu.Handle), WidgetDirection[UseRightToLeftAlign]);
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Switch(AMenu.Items, False);
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end;
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end.
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