/* The GIMP -- an image manipulation program * Copyright (C) 1995 Spencer Kimball and Peter Mattis * * This program 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 of the License, or * (at your option) any later version. * * 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. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ #include "config.h" #include #include "display-types.h" #include "core/gimpimage.h" #include "gimpdisplay.h" #include "gimpdisplay-handlers.h" /* local function prototypes */ static void gimp_display_update_handler (GimpImage *gimage, gint x, gint y, gint w, gint h, GimpDisplay *gdisp); static void gimp_display_mode_changed_handler (GimpImage *gimage, GimpDisplay *gdisp); static void gimp_display_colormap_changed_handler (GimpImage *gimage, gint ncol, GimpDisplay *gdisp); static void gimp_display_size_changed_handler (GimpImage *gimage, GimpDisplay *gdisp); /* public functions */ void gimp_display_connect (GimpDisplay *gdisp, GimpImage *gimage) { g_return_if_fail (GIMP_IS_DISPLAY (gdisp)); g_return_if_fail (GIMP_IS_IMAGE (gimage)); g_return_if_fail (gdisp->gimage == NULL); gdisp->gimage = gimage; gdisp->instance = gimage->instance_count; gimage->instance_count++; /* this is obsolete */ gimage->disp_count++; g_object_ref (G_OBJECT (gimage)); g_signal_connect (G_OBJECT (gimage), "update", G_CALLBACK (gimp_display_update_handler), gdisp); g_signal_connect (G_OBJECT (gimage), "mode_changed", G_CALLBACK (gimp_display_mode_changed_handler), gdisp); g_signal_connect (G_OBJECT (gimage), "colormap_changed", G_CALLBACK (gimp_display_colormap_changed_handler), gdisp); g_signal_connect (G_OBJECT (gimage), "size_changed", G_CALLBACK (gimp_display_size_changed_handler), gdisp); } void gimp_display_disconnect (GimpDisplay *gdisp) { g_return_if_fail (GIMP_IS_DISPLAY (gdisp)); g_return_if_fail (GIMP_IS_IMAGE (gdisp->gimage)); g_signal_handlers_disconnect_by_func (G_OBJECT (gdisp->gimage), gimp_display_size_changed_handler, gdisp); g_signal_handlers_disconnect_by_func (G_OBJECT (gdisp->gimage), gimp_display_colormap_changed_handler, gdisp); g_signal_handlers_disconnect_by_func (G_OBJECT (gdisp->gimage), gimp_display_mode_changed_handler, gdisp); g_signal_handlers_disconnect_by_func (G_OBJECT (gdisp->gimage), gimp_display_update_handler, gdisp); gdisp->gimage->disp_count--; g_object_unref (G_OBJECT (gdisp->gimage)); gdisp->gimage = NULL; } /* private functions */ static void gimp_display_update_handler (GimpImage *gimage, gint x, gint y, gint w, gint h, GimpDisplay *gdisp) { gimp_display_add_update_area (gdisp, x, y, w, h); } static void gimp_display_mode_changed_handler (GimpImage *gimage, GimpDisplay *gdisp) { gimp_display_add_update_area (gdisp, 0, 0, gdisp->gimage->width, gdisp->gimage->height); } static void gimp_display_colormap_changed_handler (GimpImage *gimage, gint ncol, GimpDisplay *gdisp) { if (gimp_image_base_type (gdisp->gimage) == INDEXED) gimp_display_add_update_area (gdisp, 0, 0, gdisp->gimage->width, gdisp->gimage->height); } static void gimp_display_size_changed_handler (GimpImage *gimage, GimpDisplay *gdisp) { gimp_display_add_update_area (gdisp, 0, 0, gdisp->gimage->width, gdisp->gimage->height); }