|
@@ -0,0 +1,154 @@
|
|
|
+{
|
|
|
+ $Id$
|
|
|
+
|
|
|
+ Converted from C to Pascal by Frank Loemker
|
|
|
+ <[email protected]>
|
|
|
+}
|
|
|
+program scribble;
|
|
|
+uses
|
|
|
+ glib,Gdk,Gtk;
|
|
|
+
|
|
|
+{ Backing pixmap for drawing area }
|
|
|
+const
|
|
|
+ pixmap : PGdkPixmap = NIL;
|
|
|
+
|
|
|
+{ Create a new backing pixmap of the appropriate size }
|
|
|
+function configure_event (widget : PGtkWidget; event: PGdkEventConfigure):boolean; cdecl;
|
|
|
+begin
|
|
|
+ if pixmap<>NIL then
|
|
|
+ gdk_pixmap_unref(pixmap);
|
|
|
+
|
|
|
+ pixmap := gdk_pixmap_new(widget^.window,
|
|
|
+ widget^.allocation.width,
|
|
|
+ widget^.allocation.height,
|
|
|
+ -1);
|
|
|
+ gdk_draw_rectangle (pixmap,
|
|
|
+ PGtkStyle(widget^.thestyle)^.white_gc,
|
|
|
+ gint(true),
|
|
|
+ 0, 0,
|
|
|
+ widget^.allocation.width,
|
|
|
+ widget^.allocation.height);
|
|
|
+
|
|
|
+ configure_event := TRUE;
|
|
|
+end;
|
|
|
+
|
|
|
+{ Redraw the screen from the backing pixmap }
|
|
|
+function expose_event (widget : PGtkWidget ; event : PGdkEventExpose ) : boolean; cdecl;
|
|
|
+begin
|
|
|
+ gdk_draw_pixmap(widget^.window,
|
|
|
+ PGtkStyle(widget^.thestyle)^.fg_gc[gtk_WIDGET_STATE (widget)],
|
|
|
+ pixmap,
|
|
|
+ event^.area.x, event^.area.y,
|
|
|
+ event^.area.x, event^.area.y,
|
|
|
+ event^.area.width, event^.area.height);
|
|
|
+ expose_event:= FALSE;
|
|
|
+end;
|
|
|
+
|
|
|
+{ Draw a rectangle on the screen }
|
|
|
+procedure draw_brush (widget : PGtkWidget ; x, y: gint16);
|
|
|
+var update_rect : TGdkRectangle;
|
|
|
+begin
|
|
|
+ update_rect.x := x - 5;
|
|
|
+ update_rect.y := y - 5;
|
|
|
+ update_rect.width := 10;
|
|
|
+ update_rect.height := 10;
|
|
|
+ gdk_draw_rectangle (pixmap,
|
|
|
+ PGtkStyle(widget^.thestyle)^.black_gc,
|
|
|
+ gint(true),
|
|
|
+ update_rect.x, update_rect.y,
|
|
|
+ update_rect.width, update_rect.height);
|
|
|
+ gtk_widget_draw (widget, @update_rect);
|
|
|
+end;
|
|
|
+
|
|
|
+function button_press_event (widget : PGtkWidget ; event: PGdkEventButton ) : boolean; cdecl;
|
|
|
+begin
|
|
|
+ if (event^.button = 1) and (pixmap <> NIL) then begin
|
|
|
+ draw_brush (widget, trunc(event^.x), trunc(event^.y));
|
|
|
+ end;
|
|
|
+ button_press_event := TRUE;
|
|
|
+end;
|
|
|
+
|
|
|
+function motion_notify_event (widget : PGtkWidget ; event: PGdkEventMotion ) : boolean; cdecl;
|
|
|
+var x, y : longint ;
|
|
|
+ state : longint;
|
|
|
+begin
|
|
|
+ if (event^.is_hint<>0) then begin
|
|
|
+ gdk_window_get_pointer (event^.window, @x, @y, @state);
|
|
|
+ end else begin
|
|
|
+ x := trunc(event^.x);
|
|
|
+ y := trunc(event^.y);
|
|
|
+ state := event^.state;
|
|
|
+ end;
|
|
|
+
|
|
|
+ if ((state and gdk_BUTTON1_MASK)<>0) and (pixmap <> NIL) then
|
|
|
+ draw_brush (widget, x, y);
|
|
|
+
|
|
|
+ motion_notify_event := TRUE;
|
|
|
+end;
|
|
|
+
|
|
|
+procedure quit;
|
|
|
+begin
|
|
|
+ gtk_exit (0);
|
|
|
+end;
|
|
|
+
|
|
|
+var window, drawing_area, vbox, button : PGtkWidget;
|
|
|
+begin
|
|
|
+ gtk_init (@argc, @argv);
|
|
|
+ gtk_rc_init;
|
|
|
+
|
|
|
+ window := gtk_window_new (gtk_WINDOW_TOPLEVEL);
|
|
|
+ gtk_widget_set_name (window, 'Test Input');
|
|
|
+
|
|
|
+ vbox := gtk_vbox_new (false, 0);
|
|
|
+ gtk_container_add (PGtkCONTAINER (window), vbox);
|
|
|
+ gtk_widget_show (vbox);
|
|
|
+
|
|
|
+ gtk_signal_connect (PGtkOBJECT (window), 'destroy',
|
|
|
+ gtk_SIGNAL_FUNC (@quit), NIL);
|
|
|
+
|
|
|
+ { Create the drawing area }
|
|
|
+
|
|
|
+ drawing_area := gtk_drawing_area_new ();
|
|
|
+ gtk_drawing_area_size (PGtkDRAWINGAREA (drawing_area), 200, 200);
|
|
|
+ gtk_box_pack_start (PGtkBOX (vbox), drawing_area, true, true, 0);
|
|
|
+
|
|
|
+ gtk_widget_show (drawing_area);
|
|
|
+
|
|
|
+ { Signals used to handle backing pixmap }
|
|
|
+
|
|
|
+ gtk_signal_connect (PGtkOBJECT (drawing_area), 'expose_event',
|
|
|
+ gtk_SIGNAL_FUNC (@expose_event), NIL);
|
|
|
+ gtk_signal_connect (PGtkOBJECT(drawing_area),'configure_event',
|
|
|
+ gtk_SIGNAL_FUNC (@configure_event), NIL);
|
|
|
+
|
|
|
+ { Event signals }
|
|
|
+
|
|
|
+ gtk_signal_connect (PGtkOBJECT (drawing_area), 'motion_notify_event',
|
|
|
+ gtk_SIGNAL_FUNC (@motion_notify_event), NIL);
|
|
|
+ gtk_signal_connect (PGtkOBJECT (drawing_area), 'button_press_event',
|
|
|
+ gtk_SIGNAL_FUNC (@button_press_event), NIL);
|
|
|
+
|
|
|
+ gtk_widget_set_events (drawing_area, gdk_EXPOSURE_MASK
|
|
|
+ or gdk_LEAVE_NOTIFY_MASK
|
|
|
+ or gdk_BUTTON_PRESS_MASK
|
|
|
+ or gdk_POINTER_MOTION_MASK
|
|
|
+ or gdk_POINTER_MOTION_HINT_MASK);
|
|
|
+
|
|
|
+ { .. And a quit button }
|
|
|
+ button := gtk_button_new_with_label ('Quit');
|
|
|
+ gtk_box_pack_start (PGtkBOX (vbox), button, false, false, 0);
|
|
|
+
|
|
|
+ gtk_signal_connect_object (PGtkOBJECT (button), 'clicked',
|
|
|
+ gtk_SIGNAL_FUNC (@gtk_widget_destroy),
|
|
|
+ PGtkOBJECT (window));
|
|
|
+ gtk_widget_show (button);
|
|
|
+ gtk_widget_show (window);
|
|
|
+
|
|
|
+ gtk_main ();
|
|
|
+end.
|
|
|
+{
|
|
|
+ $Log$
|
|
|
+ Revision 1.1.2.1 2000-09-09 18:42:51 peter
|
|
|
+ * gtk win32 fixes
|
|
|
+
|
|
|
+}
|