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319 lines
11 KiB
ObjectPascal
319 lines
11 KiB
ObjectPascal
{ $Id$}
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{
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*****************************************************************************
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* GtkWSMenus.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, 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 GtkWSMenus;
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{$mode objfpc}{$H+}
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interface
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uses
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Classes, InterfaceBase, Types, LCLProc, LCLType, WSMenus, WSLCLClasses,
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{$IFDEF gtk2}
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glib2, gdk2pixbuf, gdk2, gtk2, Pango,
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{$ELSE}
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glib, gdk, gtk, {$Ifndef NoGdkPixbufLib}gdkpixbuf,{$EndIf}
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{$ENDIF}
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GtkInt, gtkProc, gtkglobals, Menus;
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type
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{ TGtkWSMenuItem }
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TGtkWSMenuItem = class(TWSMenuItem)
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private
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protected
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public
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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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end;
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{ TGtkWSMenu }
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TGtkWSMenu = class(TWSMenu)
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private
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protected
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public
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class function CreateHandle(const AMenu: TMenu): HMENU; override;
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end;
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{ TGtkWSMainMenu }
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TGtkWSMainMenu = class(TWSMainMenu)
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private
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protected
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public
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end;
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{ TGtkWSPopupMenu }
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TGtkWSPopupMenu = class(TWSPopupMenu)
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private
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protected
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public
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class procedure Popup(const APopupMenu: TPopupMenu; const X, Y: integer); override;
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end;
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implementation
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uses Controls;
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{ TGtkWSMenuItem }
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class procedure TGtkWSMenuItem.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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procedure SetContainerMenuToggleSize;
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var MenuClass: PGtkWidgetClass;
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begin
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if GtkWidgetIsA(ContainerMenu,GTK_TYPE_MENU) then begin
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MenuClass:=GTK_WIDGET_CLASS(gtk_object_get_class(ContainerMenu));
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if OldMenuSizeRequestProc=nil then begin
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OldMenuSizeRequestProc:=MenuClass^.size_request;
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end;
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MenuClass^.size_request:=@MenuSizeRequest;
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end;
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end;
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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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RaiseException('TGtkWidgetSet.AttachMenu Handle=0');
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ParentMenuWidget := PGtkWidget(Parent.Handle);
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if ParentMenuWidget=nil then
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RaiseException('TGtkWidgetSet.AttachMenu ParentMenuWidget=nil');
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if GtkWidgetIsA(ParentMenuWidget,GTK_TYPE_MENU_BAR) then 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 begin
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// menu item
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// find the menu container
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ContainerMenu := PGtkWidget(gtk_object_get_data(
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PGtkObject(ParentMenuWidget),
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'ContainerMenu'));
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if ContainerMenu = nil then begin
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if (GetParentMenu is TPopupMenu) and (Parent.Parent=nil) then 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 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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SetContainerMenuToggleSize;
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if GtkWidgetIsA(MenuItem, GTK_TYPE_RADIO_MENU_ITEM) then
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TGtkWidgetSet(WidgetSet).RegroupMenuItem(HMENU(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 TGtkWSMenuItem.CreateHandle(const AMenuItem: TMenuItem): HMENU;
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begin
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{ TODO: cleanup }
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Result := HMENU(TGtkWidgetSet(WidgetSet).CreateComponent(AMenuItem));
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end;
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class procedure TGtkWSMenuItem.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 TGtkWSMenuItem.SetCaption(const AMenuItem: TMenuItem; 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 AMenuItem.HandleAllocated then exit;
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MenuItemWidget:=PGtkWidget(AMenuItem.Handle);
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UpdateInnerMenuItem(AMenuItem,MenuItemWidget);
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end;
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class procedure TGtkWSMenuItem.SetShortCut(const AMenuItem: TMenuItem;
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const OldShortCut, NewShortCut: TShortCut);
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begin
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Accelerate(AMenuItem, PGtkWidget(AMenuItem.Handle), NewShortcut,
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// The LCL already delegates the menu shortcuts.
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// just call a dummy callback
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'grab-focus'
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//{$Ifdef GTK2}'activate'{$Else}'activate_item'{$EndIF}
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);
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end;
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class procedure TGtkWSMenuItem.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 AMenuItem.HandleAllocated then exit;
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MenuItemWidget:=PGtkWidget(AMenuItem.Handle);
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if gtk_widget_visible(MenuItemWidget)=Visible then 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 TGtkWSMenuItem.SetCheck(const AMenuItem: TMenuItem; 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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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 TGtkWSMenuItem.SetEnable(const AMenuItem: TMenuItem; const Enabled: boolean): boolean;
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begin
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gtk_widget_set_sensitive(pgtkwidget(AMenuItem.Handle),
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Enabled and (AMenuItem.Caption<>'-'));
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Result := True;
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end;
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class function TGtkWSMenuItem.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 TGtkWSMenuItem.SetRightJustify(const AMenuItem: TMenuItem; const Justified: boolean): boolean;
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var
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MenuItemWidget: PGtkMenuItem;
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begin
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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:=false;
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end;
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{ TGtkWSMenu }
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class function TGtkWSMenu.CreateHandle(const AMenu: TMenu): HMENU;
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begin
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{ TODO: cleanup }
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Result := HMENU(TGtkWidgetSet(WidgetSet).CreateComponent(AMenu));
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end;
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{ TGtkWSPopupMenu }
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procedure GtkWS_Popup(menu: PGtkMenu; X, Y: pgint;
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{$IFDEF GTK2} ForceInScreen: pgboolean; {$ENDIF}
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Point: PPoint); cdecl;
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begin
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X^ := Point^.X;
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Y^ := Point^.Y;
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end;
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class procedure TGtkWSPopupMenu.Popup(const APopupMenu: TPopupMenu; const X, Y: integer);
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var
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APoint: TPoint;
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AProc: Pointer;
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begin
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ReleaseMouseCapture;
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APoint.X := X;
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APoint.Y := Y;
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if (X = Mouse.CursorPos.X) and (Y = Mouse.CursorPos.Y) then
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AProc := nil
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else
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AProc := @GtkWS_Popup;
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gtk_menu_popup(PgtkMenu(APopupMenu.Handle),
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nil,
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nil,
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TGtkMenuPositionFunc(AProc),
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@APoint,
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0,
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0);
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{Displays a menu and makes it available for selection. Applications
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can use this function to display context-sensitive menus, and will
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typically supply NULL for the parent_menu_shell, parent_menu_item,
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func and data parameters.
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The default menu positioning function will position the menu at the
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current pointer position.
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menu : a GtkMenu.
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parent_menu_shell: the menu shell containing the triggering menu item.
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parent_menu_item: the menu item whose activation triggered the popup.
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func : a user supplied function used to position the menu.
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data : user supplied data to be passed to func.
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button : the button which was pressed to initiate the event.
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activate_time : the time at which the activation event occurred.
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}
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end;
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initialization
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////////////////////////////////////////////////////
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// I M P O R T A N T
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////////////////////////////////////////////////////
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// To improve speed, register only classes
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// which actually implement something
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////////////////////////////////////////////////////
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RegisterWSComponent(TMenuItem, TGtkWSMenuItem);
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RegisterWSComponent(TMenu, TGtkWSMenu);
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// RegisterWSComponent(TMainMenu, TGtkWSMainMenu);
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RegisterWSComponent(TPopupMenu, TGtkWSPopupMenu);
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////////////////////////////////////////////////////
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end. |