diff options
Diffstat (limited to 'src/group.c')
| -rw-r--r-- | src/group.c | 446 |
1 files changed, 0 insertions, 446 deletions
diff --git a/src/group.c b/src/group.c deleted file mode 100644 index 503e57b..0000000 --- a/src/group.c +++ /dev/null @@ -1,446 +0,0 @@ -/* This file is part of Ganv. - * Copyright 2007-2015 David Robillard <http://drobilla.net> - * - * Ganv 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 3 of the License, or any later version. - * - * Ganv 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 details. - * - * You should have received a copy of the GNU General Public License along - * with Ganv. If not, see <http://www.gnu.org/licenses/>. - */ - -/* Based on GnomeCanvasGroup, by Federico Mena <federico@nuclecu.unam.mx> - * and Raph Levien <raph@gimp.org> - * Copyright 1997-2000 Free Software Foundation - */ - -#include <math.h> - -#include "ganv/canvas.h" -#include "ganv/group.h" - -#include "./gettext.h" -#include "./ganv-private.h" - -enum { - GROUP_PROP_0 -}; - -G_DEFINE_TYPE_WITH_CODE(GanvGroup, ganv_group, GANV_TYPE_ITEM, - G_ADD_PRIVATE(GanvGroup)) - -static GanvItemClass* group_parent_class; - -static void -ganv_group_init(GanvGroup* group) -{ - GanvGroupPrivate* impl = ganv_group_get_instance_private(group); - - group->impl = impl; - group->impl->item_list = NULL; - group->impl->item_list_end = NULL; -} - -static void -ganv_group_set_property(GObject* gobject, guint param_id, - const GValue* value, GParamSpec* pspec) -{ - g_return_if_fail(GANV_IS_GROUP(gobject)); - - switch (param_id) { - default: - G_OBJECT_WARN_INVALID_PROPERTY_ID(gobject, param_id, pspec); - break; - } -} - -static void -ganv_group_get_property(GObject* gobject, guint param_id, - GValue* value, GParamSpec* pspec) -{ - g_return_if_fail(GANV_IS_GROUP(gobject)); - - switch (param_id) { - default: - G_OBJECT_WARN_INVALID_PROPERTY_ID(gobject, param_id, pspec); - break; - } -} - -static void -ganv_group_destroy(GtkObject* object) -{ - GanvGroup* group; - - g_return_if_fail(GANV_IS_GROUP(object)); - - group = GANV_GROUP(object); - - while (group->impl->item_list) { - // child is unref'ed by the child's group_remove(). - gtk_object_destroy(GTK_OBJECT(group->impl->item_list->data)); - } - if (GTK_OBJECT_CLASS(group_parent_class)->destroy) { - (*GTK_OBJECT_CLASS(group_parent_class)->destroy)(object); - } -} - -static void -ganv_group_update(GanvItem* item, int flags) -{ - GanvGroup* group = GANV_GROUP(item); - - double min_x = 0.0; - double min_y = 0.0; - double max_x = 0.0; - double max_y = 0.0; - - for (GList* list = group->impl->item_list; list; list = list->next) { - GanvItem* i = (GanvItem*)list->data; - - ganv_item_invoke_update(i, flags); - - min_x = fmin(min_x, fmin(i->impl->x1, i->impl->x2)); - min_y = fmin(min_y, fmin(i->impl->y1, i->impl->y2)); - max_x = fmax(max_x, fmax(i->impl->x1, i->impl->x2)); - max_y = fmax(max_y, fmax(i->impl->y2, i->impl->y2)); - } - item->impl->x1 = min_x; - item->impl->y1 = min_y; - item->impl->x2 = max_x; - item->impl->y2 = max_y; - - (*group_parent_class->update)(item, flags); -} - -static void -ganv_group_realize(GanvItem* item) -{ - GanvGroup* group; - GList* list; - GanvItem* i; - - group = GANV_GROUP(item); - - for (list = group->impl->item_list; list; list = list->next) { - i = (GanvItem*)list->data; - - if (!(i->object.flags & GANV_ITEM_REALIZED)) { - (*GANV_ITEM_GET_CLASS(i)->realize)(i); - } - } - - (*group_parent_class->realize)(item); -} - -static void -ganv_group_unrealize(GanvItem* item) -{ - GanvGroup* group; - GList* list; - GanvItem* i; - - group = GANV_GROUP(item); - - for (list = group->impl->item_list; list; list = list->next) { - i = (GanvItem*)list->data; - - if (i->object.flags & GANV_ITEM_REALIZED) { - (*GANV_ITEM_GET_CLASS(i)->unrealize)(i); - } - } - - (*group_parent_class->unrealize)(item); -} - -static void -ganv_group_map(GanvItem* item) -{ - GanvGroup* group; - GList* list; - GanvItem* i; - - group = GANV_GROUP(item); - - for (list = group->impl->item_list; list; list = list->next) { - i = (GanvItem*)list->data; - - if (!(i->object.flags & GANV_ITEM_MAPPED)) { - (*GANV_ITEM_GET_CLASS(i)->map)(i); - } - } - - (*group_parent_class->map)(item); -} - -static void -ganv_group_unmap(GanvItem* item) -{ - GanvGroup* group; - GList* list; - GanvItem* i; - - group = GANV_GROUP(item); - - for (list = group->impl->item_list; list; list = list->next) { - i = (GanvItem*)list->data; - - if (i->object.flags & GANV_ITEM_MAPPED) { - (*GANV_ITEM_GET_CLASS(i)->unmap)(i); - } - } - - (*group_parent_class->unmap)(item); -} - -static void -ganv_group_draw(GanvItem* item, - cairo_t* cr, double cx, double cy, double cw, double ch) -{ - GanvGroup* group = GANV_GROUP(item); - - // TODO: Layered drawing - - for (GList* list = group->impl->item_list; list; list = list->next) { - GanvItem* child = (GanvItem*)list->data; - - if (((child->object.flags & GANV_ITEM_VISIBLE) - && ((child->impl->x1 < (cx + cw)) - && (child->impl->y1 < (cy + ch)) - && (child->impl->x2 > cx) - && (child->impl->y2 > cy)))) { - if (GANV_ITEM_GET_CLASS(child)->draw) { - (*GANV_ITEM_GET_CLASS(child)->draw)( - child, cr, cx, cy, cw, ch); - } - } - } -} - -static double -ganv_group_point(GanvItem* item, double x, double y, GanvItem** actual_item) -{ - GanvGroup* group = GANV_GROUP(item); - - const double x1 = x - GANV_CLOSE_ENOUGH; - const double y1 = y - GANV_CLOSE_ENOUGH; - const double x2 = x + GANV_CLOSE_ENOUGH; - const double y2 = y + GANV_CLOSE_ENOUGH; - - double dist = 0.0; - double best = 0.0; - - *actual_item = NULL; - - for (GList* list = group->impl->item_list; list; list = list->next) { - GanvItem* child = (GanvItem*)list->data; - if ((child->impl->x1 > x2) || (child->impl->y1 > y2) || (child->impl->x2 < x1) || (child->impl->y2 < y1)) { - continue; - } - - GanvItem* point_item = NULL; - - int has_point = FALSE; - if ((child->object.flags & GANV_ITEM_VISIBLE) - && GANV_ITEM_GET_CLASS(child)->point) { - dist = GANV_ITEM_GET_CLASS(child)->point( - child, - x - child->impl->x, y - child->impl->y, - &point_item); - has_point = TRUE; - } - - if (has_point - && point_item - && ((int)(dist + 0.5) <= GANV_CLOSE_ENOUGH)) { - best = dist; - *actual_item = point_item; - } - } - - if (*actual_item) { - return best; - } else { - *actual_item = item; - return 0.0; - } -} - -/* Get bounds of child item in group-relative coordinates. */ -static void -get_child_bounds(GanvItem* child, double* x1, double* y1, double* x2, double* y2) -{ - ganv_item_get_bounds(child, x1, y1, x2, y2); - - // Make bounds relative to the item's parent coordinate system - *x1 -= child->impl->x; - *y1 -= child->impl->y; - *x2 -= child->impl->x; - *y2 -= child->impl->y; -} - -static void -ganv_group_bounds(GanvItem* item, double* x1, double* y1, double* x2, double* y2) -{ - GanvGroup* group; - GanvItem* child; - GList* list; - double tx1, ty1, tx2, ty2; - double minx, miny, maxx, maxy; - int set; - - group = GANV_GROUP(item); - - /* Get the bounds of the first visible item */ - - child = NULL; /* Unnecessary but eliminates a warning. */ - - set = FALSE; - - for (list = group->impl->item_list; list; list = list->next) { - child = (GanvItem*)list->data; - - if (child->object.flags & GANV_ITEM_VISIBLE) { - set = TRUE; - get_child_bounds(child, &minx, &miny, &maxx, &maxy); - break; - } - } - - /* If there were no visible items, return an empty bounding box */ - - if (!set) { - *x1 = *y1 = *x2 = *y2 = 0.0; - return; - } - - /* Now we can grow the bounds using the rest of the items */ - - list = list->next; - - for (; list; list = list->next) { - child = (GanvItem*)list->data; - - if (!(child->object.flags & GANV_ITEM_VISIBLE)) { - continue; - } - - get_child_bounds(child, &tx1, &ty1, &tx2, &ty2); - - if (tx1 < minx) { - minx = tx1; - } - - if (ty1 < miny) { - miny = ty1; - } - - if (tx2 > maxx) { - maxx = tx2; - } - - if (ty2 > maxy) { - maxy = ty2; - } - } - - *x1 = minx; - *y1 = miny; - *x2 = maxx; - *y2 = maxy; -} - -static void -ganv_group_add(GanvItem* parent, GanvItem* item) -{ - GanvGroup* group = GANV_GROUP(parent); - g_object_ref_sink(G_OBJECT(item)); - - if (!group->impl->item_list) { - group->impl->item_list = g_list_append(group->impl->item_list, item); - group->impl->item_list_end = group->impl->item_list; - } else { - group->impl->item_list_end = g_list_append(group->impl->item_list_end, item)->next; - } - - if (group->item.object.flags & GANV_ITEM_REALIZED) { - (*GANV_ITEM_GET_CLASS(item)->realize)(item); - } - - if (group->item.object.flags & GANV_ITEM_MAPPED) { - (*GANV_ITEM_GET_CLASS(item)->map)(item); - } - - g_object_notify(G_OBJECT(item), "parent"); -} - -static void -ganv_group_remove(GanvItem* parent, GanvItem* item) -{ - GanvGroup* group = GANV_GROUP(parent); - GList* children; - - g_return_if_fail(GANV_IS_GROUP(group)); - g_return_if_fail(GANV_IS_ITEM(item)); - - for (children = group->impl->item_list; children; children = children->next) { - if (children->data == item) { - if (item->object.flags & GANV_ITEM_MAPPED) { - (*GANV_ITEM_GET_CLASS(item)->unmap)(item); - } - - if (item->object.flags & GANV_ITEM_REALIZED) { - (*GANV_ITEM_GET_CLASS(item)->unrealize)(item); - } - - /* Unparent the child */ - - item->impl->parent = NULL; - g_object_unref(G_OBJECT(item)); - - /* Remove it from the list */ - - if (children == group->impl->item_list_end) { - group->impl->item_list_end = children->prev; - } - - group->impl->item_list = g_list_remove_link(group->impl->item_list, children); - g_list_free(children); - break; - } - } -} - -static void -ganv_group_class_init(GanvGroupClass* klass) -{ - GObjectClass* gobject_class; - GtkObjectClass* object_class; - GanvItemClass* item_class; - - gobject_class = (GObjectClass*)klass; - object_class = (GtkObjectClass*)klass; - item_class = (GanvItemClass*)klass; - - group_parent_class = (GanvItemClass*)g_type_class_peek_parent(klass); - - gobject_class->set_property = ganv_group_set_property; - gobject_class->get_property = ganv_group_get_property; - - object_class->destroy = ganv_group_destroy; - - item_class->add = ganv_group_add; - item_class->remove = ganv_group_remove; - item_class->update = ganv_group_update; - item_class->realize = ganv_group_realize; - item_class->unrealize = ganv_group_unrealize; - item_class->map = ganv_group_map; - item_class->unmap = ganv_group_unmap; - item_class->draw = ganv_group_draw; - item_class->point = ganv_group_point; - item_class->bounds = ganv_group_bounds; -} |