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https://gitlab.com/freepascal.org/lazarus/lazarus.git
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430 lines
12 KiB
PHP
430 lines
12 KiB
PHP
{%MainUnit gtkwsextctrls.pp}
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{
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gtk1trayicon.pas
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*****************************************************************************
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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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Authors: Felipe Monteiro de Carvalho and Andrew Haines
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Special thanks for: Danny Milosavljevic and the Lazarus Team
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Gtk1 specific code. Works on gnome also.
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}
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{ TGtkWSCustomTrayIcon }
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type
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{ TGtk1TrayIconHandle }
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TGtk1TrayIconHandle = class(TObject)
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private
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function GetCanvas: TCanvas;
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function NotifyExpose(Event: PGdkEventExpose; Widget: PGtkWidget): Boolean; cdecl;
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function NotifyMouseMove(Event: PGdkEventMotion; Widget: PGtkWidget): Boolean; cdecl;
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function NotifyMouseDown(Event: PGdkEventButton; Widget: PGtkWidget): Boolean; cdecl;
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function NotifyMouseUp(Event: PGdkEventButton; Widget: PGtkWidget): Boolean; cdecl;
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public
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plug: PGtkWidget;
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drawingarea: PGtkWidget;
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fDisplay: PDisplay;
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fcanvas: TCanvas;
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fWindow: TWindow;
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fScreenID: longint;
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fTrayParent: TWindow;
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fOwner: TComponent;
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fEmbedded: Boolean;
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fMsgCount: Integer;
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fTrayIcon: TCustomTrayIcon;
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function Send_Message(window: TWindow; msg: Integer;data1, data2,data3: Integer): boolean;
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function TrayParent(UseCachedValue: Boolean = True): TWindow;
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destructor Destroy; override;
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procedure SetEmbedded;
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procedure Hide;
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procedure CreateForm(id: Integer);
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procedure SetMinSize(AWidth, AHeight: Integer);
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procedure PaintForm(Sender: TObject);
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property Canvas: TCanvas read GetCanvas;
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end;
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const
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SYSTEM_TRAY_REQUEST_DOCK = 0;
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SYSTEM_TRAY_BEGIN_MESSAGE = 1;
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SYSTEM_TRAY_CANCEL_MESSAGE = 2;
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// Temp ErrorHandler
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function TempX11ErrorHandler(Display:PDisplay; ErrorEv:PXErrorEvent):longint;cdecl;
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begin
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WriteLn('Error: ' + IntToStr(ErrorEv^.error_code));
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Result:=0;
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end;
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function TGtk1TrayIconHandle.GetCanvas: TCanvas;
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begin
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if Assigned(FCanvas) then
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Exit(FCanvas);
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Result := TCanvas.Create;
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Result.Handle:= GetDC(HWND(drawingarea));
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FCanvas := Result;
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end;
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function TGtk1TrayIconHandle.NotifyExpose(Event: PGdkEventExpose;
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Widget: PGtkWidget): Boolean; cdecl;
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begin
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PaintForm(fTrayIcon);
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end;
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function TGtk1TrayIconHandle.NotifyMouseMove(Event: PGdkEventMotion;
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Widget: PGtkWidget): Boolean; cdecl;
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begin
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if Assigned(fTrayIcon.OnMouseMove) then
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fTrayIcon.OnMouseMove(fTrayIcon, [], Trunc(Event^.x), Trunc(Event^.y));
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end;
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function TGtk1TrayIconHandle.NotifyMouseDown(Event: PGdkEventButton;
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Widget: PGtkWidget): Boolean; cdecl;
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var
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Button: TMouseButton;
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begin
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case Event^.button of
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GDK_RIGHTBUTTON: Button := mbRight;
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GDK_MIDDLEBUTTON: Button := mbMiddle;
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GDK_LEFTBUTTON: Button := mbLeft;
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end;
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if Assigned(fTrayIcon.OnMouseDown) then
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fTrayIcon.OnMouseDown(fTrayIcon, Button, [], Trunc(Event^.x), Trunc(Event^.y));
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end;
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function TGtk1TrayIconHandle.NotifyMouseUp(Event: PGdkEventButton;
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Widget: PGtkWidget): Boolean; cdecl;
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var
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Button: TMouseButton;
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begin
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case Event^.button of
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3: Button := mbRight;
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2: Button := mbMiddle;
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1: Button := mbLeft;
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end;
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if Button = mbLeft then
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case gdk_event_get_type(Event) of
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GDK_BUTTON_PRESS:
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if Assigned(fTrayIcon.OnClick) then
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fTrayIcon.OnClick(fTrayIcon);
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GDK_2BUTTON_PRESS:
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if Assigned(fTrayIcon.OnDblClick) then
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fTrayIcon.OnDblClick(fTrayIcon);
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end;
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if (Button = mbRight) and (fTrayIcon.PopUpMenu <> nil) then
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fTrayIcon.PopUpMenu.PopUp(-1,-1);
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if Assigned(fTrayIcon.OnMouseUp) then
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fTrayIcon.OnMouseUp(fTrayIcon, Button, [], Trunc(Event^.x), Trunc(Event^.y));
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end;
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{*******************************************************************
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* TGtk1TrayIconHandle.Send_Message ()
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*
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* DESCRIPTION: Sends a message to the X client
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*
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* PARAMETERS: None
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*
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* RETURNS: Nothing
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*
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*******************************************************************}
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function TGtk1TrayIconHandle.Send_Message(window: TWindow; msg: Integer;data1, data2,data3: Integer): boolean;
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var
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Ev: TXEvent;
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// fmt: Integer;
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begin
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FillChar(Ev, SizeOf(TXEvent), $0);
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ev.xclient._type := ClientMessage;
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ev.xclient.window := window;
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ev.xclient.message_type := XInternAtom (fDisplay, '_NET_SYSTEM_TRAY_OPCODE', False );
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ev.xclient.format := 32;
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ev.xclient.data.l[0] := CurrentTime;
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ev.xclient.data.l[1] := msg;
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ev.xclient.data.l[2] := data1;
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ev.xclient.data.l[3] := data2;
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ev.xclient.data.l[4] := data3;
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XSendEvent(fDisplay, fTrayParent, False, NoEventMask, @ev);
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XSync(fDisplay, False);
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Result := false;//(untrap_errors() = 0);
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end;
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function TGtk1TrayIconHandle.TrayParent(UseCachedValue: Boolean = True): TWindow;
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var
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buf: array[0..32] of char;
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selection_atom: TAtom;
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begin
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if (fTrayParent <> 0) and UseCachedValue then
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Exit(fTrayParent);
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fDisplay := gdk_display;
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fScreenID := gdk_screen;
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//fScreenID := XScreenNumberOfScreen(fScreen); // and it's number
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XGrabServer(fDisplay);
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buf := PChar('_NET_SYSTEM_TRAY_S' + IntToStr(fScreenID));
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selection_atom := XInternAtom(fDisplay, buf, false);
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fTrayParent := XGetSelectionOwner(fDisplay, selection_atom);
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XUngrabServer(fDisplay);
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Result := fTrayParent;
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end;
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destructor TGtk1TrayIconHandle.Destroy;
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begin
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if Assigned(FCanvas) and FCanvas.HandleAllocated then
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begin
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ReleaseDC(HWND(drawingarea), fcanvas.Handle);
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FCanvas.Free;
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end;
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if Assigned(drawingarea) then
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begin
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g_signal_handlers_destroy(G_OBJECT(drawingarea));
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gtk_widget_destroy(drawingarea);
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end;
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if Assigned(plug) then
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gtk_widget_destroy(plug);
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inherited Destroy;
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end;
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{*******************************************************************
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* TGtk1TrayIconHandle.SetEmbedded ()
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*
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* DESCRIPTION:
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*
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* PARAMETERS: None
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*
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* RETURNS: Nothing
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*
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*******************************************************************}
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procedure TGtk1TrayIconHandle.SetEmbedded;
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var
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old_error: TXErrorHandler;
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buf: array [0..32] of char;
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selection_atom : TAtom;
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begin
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fEmbedded := False;
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if TrayParent = None then
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Exit;
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// so we have a TWindow
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gtk_widget_realize(plug);
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old_error := XSetErrorHandler(@TempX11ErrorHandler);
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Sleep(80);
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xsync(fdisplay,true);
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XGrabServer(fDisplay);
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XSelectInput(fDisplay, TrayParent, StructureNotifyMask);
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XUngrabServer(fDisplay);
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XFlush(fDisplay);
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fWindow := GDK_WINDOW_XWINDOW (Pointer(PGtkWidget(plug)^.window));
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Send_Message(TrayParent, SYSTEM_TRAY_REQUEST_DOCK, fWindow, 0, 0);
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GTK_WIDGET_SET_FLAGS(plug,GTK_VISIBLE);
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GTK_WIDGET_SET_FLAGS(plug,GTK_MAPPED);
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gtk_widget_show_all(plug);
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XSetErrorHandler(old_error);
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fEmbedded:=True;
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end;
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procedure TGtk1TrayIconHandle.Hide;
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begin
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gtk_widget_hide_all(drawingarea);
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fEmbedded := False;
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end;
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{*******************************************************************
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* TGtk1TrayIconHandle.CreateForm ()
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*
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* DESCRIPTION:
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*
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* PARAMETERS: None
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*
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* RETURNS: Nothing
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*
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*******************************************************************}
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procedure TGtk1TrayIconHandle.CreateForm(id: Integer);
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begin
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plug := gtk_plug_new(0);
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drawingarea := gtk_event_box_new;
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gtk_container_add(GTK_CONTAINER(plug), drawingarea);
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//gtk_widget_add_events(drawingarea, GDK_MOTION_NOTIFY);
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gtk_signal_connect_object_after(G_OBJECT(drawingarea), 'expose-event', TGtkSignalFunc(@TGtk1TrayIconHandle.NotifyExpose), G_OBJECT(Self));
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gtk_signal_connect_object(G_OBJECT(drawingarea), 'motion-notify-event', TGtkSignalFunc(@TGtk1TrayIconHandle.NotifyMouseMove), G_OBJECT(Self));
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gtk_signal_connect_object(G_OBJECT(drawingarea), 'button-press-event', TGtkSignalFunc(@TGtk1TrayIconHandle.NotifyMouseDown), G_OBJECT(Self));
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gtk_signal_connect_object(G_OBJECT(drawingarea), 'button-release-event', TGtkSignalFunc(@TGtk1TrayIconHandle.NotifyMouseUp), G_OBJECT(Self));
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//
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fEmbedded := False;
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GetCanvas;
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end;
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{*******************************************************************
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* TGtk1TrayIconHandle.SetMinSize ()
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*
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* DESCRIPTION: Attemps to avoid problems on Gnome
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*
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* PARAMETERS:
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*
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* RETURNS: Nothing
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*
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*******************************************************************}
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procedure TGtk1TrayIconHandle.SetMinSize(AWidth, AHeight: Integer);
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begin
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gtk_widget_set_usize(drawingarea, AWidth, AHeight);
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end;
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{*******************************************************************
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* TGtk1TrayIconHandle.PaintForm ()
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*
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* DESCRIPTION: Paint method of the Icon Window
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*
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* PARAMETERS: Sender of the event
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*
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* RETURNS: Nothing
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*
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*******************************************************************}
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procedure TGtk1TrayIconHandle.PaintForm(Sender: TObject);
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begin
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if fTrayIcon.ShowIcon then Canvas.Draw(0, 0, fTrayIcon.Icon);
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if Assigned(fTrayIcon.OnPaint) then fTrayIcon.OnPaint(Self);
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end;
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{*******************************************************************
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* TGtkWSCustomTrayIcon.Hide ()
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*
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* DESCRIPTION: Hides the main tray icon of the program
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*
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* PARAMETERS: None
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*
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* RETURNS: True if sucessfull, otherwise False
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*
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*******************************************************************}
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class function TGtkWSCustomTrayIcon.Hide(const ATrayIcon: TCustomTrayIcon): Boolean;
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var
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TrayIconHandle: TGtk1TrayIconHandle;
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begin
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Result := False;
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TrayIconHandle := TGtk1TrayIconHandle(ATrayIcon.Handle);
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TrayIconHandle.Free;
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ATrayIcon.Handle := 0;
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Result := True;
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end;
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{*******************************************************************
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* TGtkWSCustomTrayIcon.Show ()
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*
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* DESCRIPTION: Shows the main tray icon of the program
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*
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* PARAMETERS: None
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*
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* RETURNS: True if sucessfull, otherwise False
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*
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*******************************************************************}
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class function TGtkWSCustomTrayIcon.Show(const ATrayIcon: TCustomTrayIcon): Boolean;
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var
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TrayIconHandle: TGtk1TrayIconHandle;
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EventObject: PGtkObject;
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WidgetInfo : PWidgetInfo;
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begin
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Result := False;
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TrayIconHandle := TGtk1TrayIconHandle.Create;
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TrayIconHandle.fTrayIcon := ATrayIcon;
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ATrayIcon.Handle := PtrInt(TrayIconHandle);
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TrayIconHandle.CreateForm(0);
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TrayIconHandle.SetMinSize(ATrayIcon.Icon.Width, ATrayIcon.Icon.Height);
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TrayIconHandle.SetEmbedded;
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Result := True;
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end;
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{*******************************************************************
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* TGtkWSCustomTrayIcon.InternalUpdate ()
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*
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* DESCRIPTION: Makes modifications to the Icon while running
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* i.e. without hiding it and showing again
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*
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* PARAMETERS: None
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*
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* RETURNS: Nothing
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*
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*******************************************************************}
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class procedure TGtkWSCustomTrayIcon.InternalUpdate(const ATrayIcon: TCustomTrayIcon);
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var
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TrayIconHandle: TGtk1TrayIconHandle;
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begin
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TrayIconHandle := TGtk1TrayIconHandle(ATrayIcon.Handle);
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if not Assigned(TrayIconHandle) then Exit;
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//if Assigned(TrayIconHandle.GtkForm) then
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// TrayIconHandle.GtkForm.PopupMenu := ATrayIcon.PopUpMenu;
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end;
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{*******************************************************************
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* TGtkWSCustomTrayIcon.GetPosition ()
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*
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* DESCRIPTION: Returns the position of the tray icon on the display.
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* This function is utilized to show message boxes near
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* the icon
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*
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* PARAMETERS: None
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*
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* RETURNS: Nothing
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*
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*******************************************************************}
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class function TGtkWSCustomTrayIcon.GetPosition(const ATrayIcon: TCustomTrayIcon): TPoint;
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begin
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Result.X := 0;
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Result.Y := 0;
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end;
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class function TGtkWSCustomTrayIcon.GetCanvas(const ATrayIcon: TCustomTrayIcon
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): TCanvas;
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var
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TrayIconHandle: TGtk1TrayIconHandle;
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begin
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TrayIconHandle := TGtk1TrayIconHandle(ATrayIcon.Handle);
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if not Assigned(TrayIconHandle) then Exit(ATrayIcon.Icon.Canvas);
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Result := TrayIconHandle.Canvas;
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end;
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