lazarus/gtk/gtkwsarrow.pp

{ $Id$}
{
 *****************************************************************************
 *                               GtkWSArrow.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 copyright.                                         *
 *                                                                           *
 *  This program is distributed in the hope that it will be useful,          *
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of           *
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.                     *
 *                                                                           *
 *****************************************************************************
}
unit GtkWSArrow;

{$mode objfpc}{$H+}

interface

uses
  {$IFDEF gtk2}
  glib2, gdk2pixbuf, gdk2, gtk2, Pango,
  {$ELSE}
  glib, gdk, gtk, gdkpixbuf, GtkFontCache,
  {$ENDIF}
  Classes, Controls, Arrow, LCLType,
  WSArrow, WSLCLClasses,
  GtkDef, GtkProc, GtkWsControls;

type
  { TGtkWSArrow }

  TGtkWSArrow = class(TWSArrow)
  private
  protected
    class procedure SetCallbacks(const AGtkWidget: PGtkWidget; const AWidgetInfo: PWidgetInfo); virtual;
  published
    class function  CreateHandle(const AWinControl: TWinControl; const AParams: TCreateParams): TLCLIntfHandle; override;
    class procedure SetType(const AArrow: TArrow; const AArrowType: TArrowType;
      const AShadowType: TShadowType); override;
  end;

implementation

const
  LCLToGTKArrowTypeMap: array[TArrowType] of TGtkArrowType =
  (
{ atUp   } GTK_ARROW_UP,
{ atDown } GTK_ARROW_DOWN,
{ atLeft } GTK_ARROW_LEFT,
{ atRight} GTK_ARROW_RIGHT
  );
  
  LCLToGTKShadowTypeMap: array[TShadowType] of TGtkShadowType =
  (
{ stNone     } GTK_SHADOW_NONE,
{ stIn       } GTK_SHADOW_IN,
{ stOut      } GTK_SHADOW_OUT,
{ stEtchedIn } GTK_SHADOW_ETCHED_IN,
{ stEtchedOut} GTK_SHADOW_ETCHED_OUT
  );

{ TGtkWSArrow }

class procedure TGtkWSArrow.SetCallbacks(const AGtkWidget: PGtkWidget;
  const AWidgetInfo: PWidgetInfo);
begin
  TGtkWSWinControl.SetCallbacks(PGtkObject(AGtkWidget), TComponent(AWidgetInfo^.LCLObject));
end;

class function TGtkWSArrow.CreateHandle(const AWinControl: TWinControl;
  const AParams: TCreateParams): TLCLIntfHandle;
var
  EventBox, ArrowWidget: PGtkWidget;
  WidgetInfo: PWidgetInfo;
  Allocation: TGtkAllocation;
begin
  EventBox := gtk_event_box_new();
  ArrowWidget := gtk_arrow_new(gtk_arrow_left, gtk_shadow_etched_in);
  gtk_container_add(PGtkContainer(EventBox), ArrowWidget);
  gtk_widget_show_all(EventBox);

  Result := TLCLIntfHandle(PtrUInt(EventBox));
  {$IFDEF DebugLCLComponents}
  DebugGtkWidgets.MarkCreated(EventBox, dbgsName(AWinControl));
  {$ENDIF}
  WidgetInfo := CreateWidgetInfo(Pointer(Result), AWinControl, AParams);

  Allocation.X := AParams.X;
  Allocation.Y := AParams.Y;
  Allocation.Width := AParams.Width;
  Allocation.Height := AParams.Height;
  gtk_widget_size_allocate(PGtkWidget(Result), @Allocation);

  Set_RC_Name(AWinControl, EventBox);
  SetCallBacks(EventBox, WidgetInfo);
end;

class procedure TGtkWSArrow.SetType(const AArrow: TArrow; const AArrowType: TArrowType;
  const AShadowType: TShadowType);
var
  ArrowWidget: PGtkWidget;
begin
  ArrowWidget := PGtkBin(AArrow.Handle)^.child;

  gtk_arrow_set(PGtkArrow(ArrowWidget),
    LCLToGTKArrowTypeMap[AArrowType],
    LCLToGTKShadowTypeMap[AShadowType]);
end;

end.