mirror of
https://gitlab.com/freepascal.org/lazarus/lazarus.git
synced 2025-11-04 12:49:42 +01:00
497bf7b015
- General clean up and much improved support for Qt. - Updated the example to contain a popup menu. git-svn-id: trunk@10107 -
516 lines
14 KiB
ObjectPascal
516 lines
14 KiB
ObjectPascal
{
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wsgtk2trayicon.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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Gtk2 specific code.
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}
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unit WSGtk2TrayIcon;
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{$ifdef FPC}
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{$mode delphi}{$H+}
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{$endif}
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{$PACKRECORDS C}
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interface
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uses
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Graphics, Classes, ExtCtrls, SysUtils, Forms, Controls, Dialogs,
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Menus, WSCommonTrayIcon, x, xlib, xutil, gtk2, gdk2, gdk2x, glib2, gtkdef;
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type
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{ TWidgetTrayIcon }
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TWidgetTrayIcon = class(TCustomWidgetTrayIcon)
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private
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fOwner: TComponent;
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fEmbedded: Boolean;
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fMsgCount: Integer;
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Tips: PGtkTooltips;
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procedure CreateForm(id: Integer);
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procedure RemoveForm(id: Integer);
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function GetCanvas: TCanvas;
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protected
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public
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function Hide: Boolean; override;
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function Show: Boolean; override;
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property Canvas: TCanvas read GetCanvas;
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procedure InternalUpdate; override;
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procedure PaintForm(Sender: TObject);
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function GetPosition: TPoint; override;
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published
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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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implementation
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uses WSTrayIcon;
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var
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fDisplay: PDisplay;
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fWindow: TWindow;
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fScreen: PScreen;
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fScreenID: longint;
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GtkForm: PGtkWidget;
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fTrayParent: TWindow;
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{*******************************************************************
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* TempX11ErrorHandler ()
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*
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* DESCRIPTION: Temp ErrorHandler
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*
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* PARAMETERS: ?
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*
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* RETURNS: ?
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*
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*******************************************************************}
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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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end;
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{*******************************************************************
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* 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 SendMessage(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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{*******************************************************************
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* SetEmbedded ()
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*
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* DESCRIPTION: Docks the GtkPlug into the system tray
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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 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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old_error := XSetErrorHandler(@TempX11ErrorHandler);
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xsync(fdisplay,true);
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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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XGrabServer(fDisplay);
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fTrayParent := XGetSelectionOwner(fDisplay, selection_atom);
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if fTrayParent <> None then
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begin
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XSelectInput(fDisplay, fTrayParent, StructureNotifyMask);
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end;
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XUngrabServer(fDisplay);
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XFlush(fDisplay);
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if fTrayParent <> None then
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SendMessage(fTrayParent, SYSTEM_TRAY_REQUEST_DOCK, fWindow, 0, 0);
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XSetErrorHandler(old_error);
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end;
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{*******************************************************************
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* realize_cb ()
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*
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* DESCRIPTION: Callback function for the realize signal
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* Sets the systray icon after the widget is realized
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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 realize_cb(widget: PGtkWidget; user_data: gpointer); cdecl;
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var
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gdk_screen: PGdkScreen;
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begin
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fDisplay := GDK_WINDOW_XDISPLAY(GtkForm^.window);
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fWindow := GDK_WINDOW_XWINDOW(GtkForm^.window);
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{ Doesn<73>t work
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gdk_screen := gtk_widget_get_screen(GtkForm);
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fScreen := GDK_SCREEN_XSCREEN(gdk_screen); // get the real screen}
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fScreen := XDefaultScreenOfDisplay(fDisplay);
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fScreenID := XScreenNumberOfScreen(fScreen); // and it's number
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SetEmbedded;
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end;
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{*******************************************************************
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* button_release_cb ()
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*
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* DESCRIPTION: Callback function for Mouse Click
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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 button_release_cb(widget: PGtkWidget; event: PGdkEventButton;
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user_data: gpointer): gboolean; cdecl;
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var
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vwsTrayIcon: TWSTrayIcon;
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begin
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vwsTrayIcon := TWSTrayIcon(user_data);
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Result := False;
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case event^.button of
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1:
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begin
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if Assigned(vwsTrayIcon.OnClick) then vwsTrayIcon.OnClick(vwsTrayIcon);
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if Assigned(vwsTrayIcon.OnMouseUp) then
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vwsTrayIcon.OnMouseUp(vwsTrayIcon, mbLeft, [], Round(event^.X), Round(event^.Y));
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end;
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2: if Assigned(vwsTrayIcon.OnMouseUp) then
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vwsTrayIcon.OnMouseUp(vwsTrayIcon, mbMiddle, [], Round(event^.X), Round(event^.Y));
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3: if Assigned(vwsTrayIcon.OnMouseUp) then
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vwsTrayIcon.OnMouseUp(vwsTrayIcon, mbRight, [], Round(event^.X), Round(event^.Y));
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end;
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end;
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{*******************************************************************
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* button_press_cb ()
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*
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* DESCRIPTION: Callback function for Mouse Click
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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 button_press_cb(widget: PGtkWidget; event: PGdkEventButton;
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user_data: gpointer): gboolean; cdecl;
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var
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vwsTrayIcon: TWSTrayIcon;
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begin
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vwsTrayIcon := TWSTrayIcon(user_data);
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Result := False;
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if (event^._type = GDK_2BUTTON_PRESS) and Assigned(vwsTrayIcon.OnDblClick) then
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vwsTrayIcon.OnDblClick(vwsTrayIcon)
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else
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begin
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case event^.button of
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1: if Assigned(vwsTrayIcon.OnMouseUp) then
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vwsTrayIcon.OnMouseDown(vwsTrayIcon, mbLeft, [], Round(event^.X), Round(event^.Y));
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2: if Assigned(vwsTrayIcon.OnMouseUp) then
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vwsTrayIcon.OnMouseDown(vwsTrayIcon, mbMiddle, [], Round(event^.X), Round(event^.Y));
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3:
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begin
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if Assigned(vwsTrayIcon.OnMouseUp) then
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vwsTrayIcon.OnMouseDown(vwsTrayIcon, mbRight, [], Round(event^.X), Round(event^.Y));
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if Assigned(vwsTrayIcon.PopUpMenu) then
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vwsTrayIcon.PopUpMenu.PopUp(Mouse.CursorPos.X, Mouse.CursorPos.Y);
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end;
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end;
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end;
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end;
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{*******************************************************************
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* popup_cb ()
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*
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* DESCRIPTION: Callback function for the popup menu
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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 popup_cb(widget: PGtkWidget; user_data: gpointer): Boolean; cdecl;
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var
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vwsTrayIcon: TWSTrayIcon;
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begin
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vwsTrayIcon := TWSTrayIcon(user_data);
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Result := True;
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if Assigned(vwsTrayIcon.PopUpMenu) then
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vwsTrayIcon.PopUpMenu.PopUp(Mouse.CursorPos.X, Mouse.CursorPos.Y);
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end;
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{*******************************************************************
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* motion_cb ()
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*
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* DESCRIPTION: Callback function for the OnMouseMove event
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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 motion_cb(widget: PGtkWidget; event: PGdkEventMotion; user_data: gpointer): Boolean; cdecl;
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var
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vwsTrayIcon: TWSTrayIcon;
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begin
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vwsTrayIcon := TWSTrayIcon(user_data);
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Result := False;
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if Assigned(vwsTrayIcon.OnMouseMove) then
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vwsTrayIcon.OnMouseMove(vwsTrayIcon, [], Round(event^.X), Round(event^.Y));
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end;
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{ TWidgetTrayIcon }
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{*******************************************************************
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* TWidgetTrayIcon.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 TWidgetTrayIcon.CreateForm(id: Integer);
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var
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AImage: PGtkWidget;
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GDIObject: PgdiObject;
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begin
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{*******************************************************************
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* Creates the GtkPlug
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*******************************************************************}
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fEmbedded := False;
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GtkForm := gtk_plug_new(0);
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Tips := gtk_tooltips_new;
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g_object_ref(Tips);
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gtk_object_sink(GTK_OBJECT(Tips));
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gtk_tooltips_set_tip(GTK_TOOLTIPS(Tips), GtkForm, PChar(Hint), '');
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{*******************************************************************
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* Connects the signals
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*******************************************************************}
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gtk_widget_add_events(GtkForm, GDK_ALL_EVENTS_MASK);
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g_signal_connect(GtkForm, 'realize', TGCallback(@realize_cb), Self);
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g_signal_connect(GtkForm, 'popup-menu', TGCallback(@popup_cb), Self);
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g_signal_connect(GtkForm, 'motion-notify-event', TGCallback(@motion_cb), Self);
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g_signal_connect(GtkForm, 'button-press-event', TGCallback(@button_press_cb), Self);
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g_signal_connect(GtkForm, 'button-release-event', TGCallback(@button_release_cb), Self);
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{*******************************************************************
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* Draws the icon
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*******************************************************************}
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GDIObject := PgdiObject(Icon.Handle);
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AImage := gtk_image_new_from_pixmap(GDIObject^.GDIPixmapObject,
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GDIObject^.GDIBitmapMaskObject);
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gtk_widget_show(AImage);
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gtk_container_add(GTK_CONTAINER(GtkForm), AImage);
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{*******************************************************************
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* Now shows the GtkPlug
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*******************************************************************}
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gtk_widget_show(GtkForm);
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end;
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{*******************************************************************
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* TWidgetTrayIcon.RemoveForm ()
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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 TWidgetTrayIcon.RemoveForm(id: Integer);
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begin
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gtk_widget_destroy(GtkForm);
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GtkForm := nil;
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g_object_unref(Tips);
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Tips := nil;
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end;
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{*******************************************************************
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* TWidgetTrayIcon.GetCanvas ()
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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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function TWidgetTrayIcon.GetCanvas: TCanvas;
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begin
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Result := Icon.Canvas;
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end;
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{*******************************************************************
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* TWidgetTrayIcon.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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function TWidgetTrayIcon.Hide: Boolean;
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begin
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Result := False;
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if not vVisible then Exit;
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RemoveForm(0);
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vVisible := False;
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Result := True;
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end;
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{*******************************************************************
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* TWidgetTrayIcon.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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function TWidgetTrayIcon.Show: Boolean;
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begin
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Result := False;
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if vVisible then Exit;
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CreateForm(0);
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fEmbedded := True;
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vVisible := True;
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Result := True;
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end;
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{*******************************************************************
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* TWidgetTrayIcon.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 TWidgetTrayIcon.PaintForm(Sender: TObject);
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begin
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// if ShowIcon then GtkForm.Canvas.Draw(0, 0, Icon);
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if Assigned(OnPaint) then OnPaint(Self);
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end;
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{*******************************************************************
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* TWidgetTrayIcon.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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procedure TWidgetTrayIcon.InternalUpdate;
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begin
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if Assigned(Tips) then gtk_tooltips_set_tip(GTK_TOOLTIPS(Tips), GtkForm, PChar(Hint), '');
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end;
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{*******************************************************************
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* TWidgetTrayIcon.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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function TWidgetTrayIcon.GetPosition: 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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end.
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