;
; gallery.sh
;
; Background-drawing viewers
;
; © 1995-1998 Straylight
;

;----- Licensing note -------------------------------------------------------
;
; This file is part of Straylight's Sapphire library.
;
; Sapphire is free software; you can redistribute it and/or modify
; it under the terms of the GNU General Public License as published by
; the Free Software Foundation; either version 2, or (at your option)
; any later version.
;
; Sapphire 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.  See the
; GNU General Public License for more details.
;
; You should have received a copy of the GNU General Public License
; along with Sapphire.  If not, write to the Free Software Foundation,
; 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.

;----- Overview -------------------------------------------------------------
;
; Functions provided:
;
;  gallery_eventHandler
;  gallery_drawBox
;  gallery_removeBox
;  gallery_reset

		[	:LNOT::DEF:gallery__dfn
		GBLL	gallery__dfn

; --- gallery_eventHandler ---
;
; On entry:	R0 == viewer handle
;		R1 == pointer to handler routine
;		R2 == R10 value to pass to handler
;		R3 == R12 value to pass to handler
;
; On exit:	--
;
; Use:		Sets up an event handler for the viewer, and adds in
;		gallery's own special processing for background drawing.

		IMPORT	gallery_eventHandler

; --- gallery_drawBox ---
;
; On entry:	R0-R3 == window relative coords of box to plot
;
; On exit:	--
;
; Use:		Draws a box to indicate tht this item hasn't been
;		displayed yet.  Use this routine to give a consistant
;		look to applications which use the gallery.

		IMPORT	gallery_drawBox

; --- gallery_removeBox ---
;
; On entry:	R0-R3 == window relative coords of box to remove
;
; On exit:	--
;
; Use:		Removes a previously draw temporary box.  It is assumed that
;		the background colour of the viewere is 1.

		IMPORT	gallery_removeBox

; --- gallery_reset ---
;
; On entry:	R0 == viewer handle
;
; On exit:	--
;
; Use:		Resets all the icons in the gallery to their `undrawn' state.
;		Use this before opening the window etc.

		IMPORT	gallery_reset

		]

;----- That's all, folks ----------------------------------------------------

		END