diff options
Diffstat (limited to 'widgets/misc/e-canvas-utils.c')
| -rw-r--r-- | widgets/misc/e-canvas-utils.c | 171 |
1 files changed, 0 insertions, 171 deletions
diff --git a/widgets/misc/e-canvas-utils.c b/widgets/misc/e-canvas-utils.c deleted file mode 100644 index 14d44f7bb2..0000000000 --- a/widgets/misc/e-canvas-utils.c +++ /dev/null @@ -1,171 +0,0 @@ -/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */ -/* - * e-canvas-utils.c - * Copyright (C) 2000 Helix Code, Inc. - * Author: Chris Lahey <clahey@helixcode.com> - * - * This library 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 library; if not, write to the - * Free Software Foundation, Inc., 59 Temple Place - Suite 330, - * Boston, MA 02111-1307, USA. - */ - -#include "e-canvas-utils.h" - -void -e_canvas_item_move_absolute (GnomeCanvasItem *item, double dx, double dy) -{ - double translate[6]; - - g_return_if_fail (item != NULL); - g_return_if_fail (GNOME_IS_CANVAS_ITEM (item)); - - art_affine_translate (translate, dx, dy); - - gnome_canvas_item_affine_absolute (item, translate); -} - -static double -compute_offset(int top, int bottom, int page_top, int page_bottom) -{ - int size = bottom - top; - int offset = 0; - - if (top <= page_top && bottom >= page_bottom) - return 0; - - if (bottom > page_bottom) - offset = (bottom - page_bottom); - if (top < page_top + offset) - offset = (top - page_top); - - if (top <= page_top + offset && bottom >= page_bottom + offset) - return offset; - - if (top < page_top + size * 3 / 2 + offset) - offset = top - (page_top + size * 3 / 2); - if (bottom > page_bottom - size * 3 / 2 + offset) - offset = bottom - (page_bottom - size * 3 / 2); - if (top < page_top + size * 3 / 2 + offset) - offset = top - ((page_top + page_bottom - (bottom - top)) / 2); - - return offset; -} - - -static void -e_canvas_show_area (GnomeCanvas *canvas, double x1, double y1, double x2, double y2) -{ - GtkAdjustment *h, *v; - int dx = 0, dy = 0; - - g_return_if_fail (canvas != NULL); - g_return_if_fail (GNOME_IS_CANVAS (canvas)); - - h = gtk_layout_get_hadjustment(GTK_LAYOUT(canvas)); - dx = compute_offset(x1, x2, h->value, h->value + h->page_size); - if (dx) - gtk_adjustment_set_value(h, CLAMP(h->value + dx, h->lower, h->upper - h->page_size)); - - v = gtk_layout_get_vadjustment(GTK_LAYOUT(canvas)); - dy = compute_offset(y1, y2, v->value, v->value + v->page_size); - if (dy) - gtk_adjustment_set_value(v, CLAMP(v->value + dy, v->lower, v->upper - v->page_size)); -} - -void -e_canvas_item_show_area (GnomeCanvasItem *item, double x1, double y1, double x2, double y2) -{ - g_return_if_fail (item != NULL); - g_return_if_fail (GNOME_IS_CANVAS_ITEM (item)); - - gnome_canvas_item_i2w(item, &x1, &y1); - gnome_canvas_item_i2w(item, &x2, &y2); - - e_canvas_show_area(item->canvas, x1, y1, x2, y2); -} - - -static gboolean -e_canvas_area_shown (GnomeCanvas *canvas, double x1, double y1, double x2, double y2) -{ - GtkAdjustment *h, *v; - int dx = 0, dy = 0; - - g_return_val_if_fail (canvas != NULL, FALSE); - g_return_val_if_fail (GNOME_IS_CANVAS (canvas), FALSE); - - h = gtk_layout_get_hadjustment(GTK_LAYOUT(canvas)); - dx = compute_offset(x1, x2, h->value, h->value + h->page_size); - if (CLAMP(h->value + dx, h->lower, h->upper - h->page_size) - h->value != 0) - return FALSE; - - v = gtk_layout_get_vadjustment(GTK_LAYOUT(canvas)); - dy = compute_offset(y1, y2, v->value, v->value + v->page_size); - if (CLAMP(v->value + dy, v->lower, v->upper - v->page_size) - v->value != 0) - return FALSE; - return TRUE; -} - -gboolean -e_canvas_item_area_shown (GnomeCanvasItem *item, double x1, double y1, double x2, double y2) -{ - g_return_val_if_fail (item != NULL, FALSE); - g_return_val_if_fail (GNOME_IS_CANVAS_ITEM (item), FALSE); - - gnome_canvas_item_i2w(item, &x1, &y1); - gnome_canvas_item_i2w(item, &x2, &y2); - - return e_canvas_area_shown(item->canvas, x1, y1, x2, y2); -} - -typedef struct { - double x1; - double y1; - double x2; - double y2; - GnomeCanvas *canvas; -} DoubsAndCanvas; - -static gboolean -show_area_timeout (gpointer data) -{ - DoubsAndCanvas *dac = data; - - if (!GTK_OBJECT_DESTROYED(dac->canvas)) - e_canvas_show_area(dac->canvas, dac->x1, dac->y1, dac->x2, dac->y2); - gtk_object_unref(GTK_OBJECT(dac->canvas)); - g_free(dac); - return FALSE; -} - -void -e_canvas_item_show_area_delayed (GnomeCanvasItem *item, double x1, double y1, double x2, double y2, gint delay) -{ - DoubsAndCanvas *dac; - - g_return_if_fail (item != NULL); - g_return_if_fail (GNOME_IS_CANVAS_ITEM (item)); - - gnome_canvas_item_i2w(item, &x1, &y1); - gnome_canvas_item_i2w(item, &x2, &y2); - - dac = g_new(DoubsAndCanvas, 1); - dac->x1 = x1; - dac->y1 = y1; - dac->x2 = x2; - dac->y2 = y2; - dac->canvas = item->canvas; - gtk_object_ref(GTK_OBJECT(item->canvas)); - g_timeout_add(delay, show_area_timeout, dac); -} |