diff options
Diffstat (limited to 'widgets/misc/e-canvas.c')
| -rw-r--r-- | widgets/misc/e-canvas.c | 129 |
1 files changed, 129 insertions, 0 deletions
diff --git a/widgets/misc/e-canvas.c b/widgets/misc/e-canvas.c index 534e3fb1e8..230d5a72ea 100644 --- a/widgets/misc/e-canvas.c +++ b/widgets/misc/e-canvas.c @@ -45,6 +45,11 @@ enum { static guint e_canvas_signals [LAST_SIGNAL] = { 0, }; +typedef struct { + GnomeCanvasItem *item; + gpointer id; +} ECanvasSelectionInfo; + GtkType e_canvas_get_type (void) { @@ -107,6 +112,7 @@ e_canvas_class_init (ECanvasClass *klass) static void e_canvas_init (ECanvas *canvas) { + canvas->selection = NULL; } static void @@ -458,3 +464,126 @@ e_canvas_item_set_reflow_callback (GnomeCanvasItem *item, ECanvasItemReflowFunc { gtk_object_set_data(GTK_OBJECT(item), "ECanvasItem::reflow_callback", (gpointer) func); } + + +void +e_canvas_item_set_selection_callback (GnomeCanvasItem *item, ECanvasItemSelectionFunc func) +{ + gtk_object_set_data(GTK_OBJECT(item), "ECanvasItem::selection_callback", (gpointer) func); +} + +void +e_canvas_item_set_selection_compare_callback (GnomeCanvasItem *item, ECanvasItemSelectionCompareFunc func) +{ + gtk_object_set_data(GTK_OBJECT(item), "ECanvasItem::selection_compare_callback", (gpointer) func); +} + +void +e_canvas_item_set_cursor (GnomeCanvasItem *item, gpointer id) +{ + GList *list; + int flags; + ECanvas *canvas; + ECanvasSelectionInfo *info; + ECanvasItemSelectionFunc func; + + g_return_if_fail(item != NULL); + g_return_if_fail(GNOME_IS_CANVAS_ITEM(item)); + g_return_if_fail(item->canvas != NULL); + g_return_if_fail(E_IS_CANVAS(item->canvas)); + + canvas = E_CANVAS(item->canvas); + flags = E_CANVAS_ITEM_SELECTION_DELETE_DATA; + + for (list = canvas->selection; list; list = g_list_next(list)) { + info = list->data; + + func = gtk_object_get_data(GTK_OBJECT(info->item), "ECanvasItem::selection_callback"); + if (func) + func(info->item, flags, info->id); + g_free(info); + } + g_list_free(canvas->selection); + + canvas->selection = NULL; + + info = g_new(ECanvasSelectionInfo, 1); + info->item = item; + info->id = id; + + flags = E_CANVAS_ITEM_SELECTION_SELECT | E_CANVAS_ITEM_SELECTION_CURSOR; + func = gtk_object_get_data(GTK_OBJECT(item), "ECanvasItem::selection_callback"); + if (func) + func(item, flags, id); + + canvas->selection = g_list_prepend(canvas->selection, info); +} + +void +e_canvas_item_set_cursor_end (GnomeCanvasItem *item, gpointer id) +{ +} + +void +e_canvas_item_add_selection (GnomeCanvasItem *item, gpointer id) +{ + int flags; + ECanvas *canvas; + ECanvasSelectionInfo *info; + ECanvasItemSelectionFunc func; + + g_return_if_fail(item != NULL); + g_return_if_fail(GNOME_IS_CANVAS_ITEM(item)); + g_return_if_fail(item->canvas != NULL); + g_return_if_fail(E_IS_CANVAS(item->canvas)); + + flags = E_CANVAS_ITEM_SELECTION_SELECT | E_CANVAS_ITEM_SELECTION_CURSOR; + canvas = E_CANVAS(item->canvas); + + info = g_new(ECanvasSelectionInfo, 1); + info->item = item; + info->id = id; + + func = gtk_object_get_data(GTK_OBJECT(item), "ECanvasItem::selection_callback"); + if (func) + func(item, flags, id); + + canvas->selection = g_list_prepend(canvas->selection, info); +} + +void +e_canvas_item_remove_selection (GnomeCanvasItem *item, gpointer id) +{ + int flags; + ECanvas *canvas; + ECanvasSelectionInfo *info; + GList *list; + + g_return_if_fail(item != NULL); + g_return_if_fail(GNOME_IS_CANVAS_ITEM(item)); + g_return_if_fail(item->canvas != NULL); + g_return_if_fail(E_IS_CANVAS(item->canvas)); + + flags = E_CANVAS_ITEM_SELECTION_DELETE_DATA; + canvas = E_CANVAS(item->canvas); + + for (list = canvas->selection; list; list = g_list_next(list)) { + info = list->data; + + if (info->item == item) { + ECanvasItemSelectionCompareFunc compare_func; + compare_func = gtk_object_get_data(GTK_OBJECT(info->item), "ECanvasItem::selection_compare_callback"); + if (compare_func(info->item, info->id, id, 0) == 0) { + ECanvasItemSelectionFunc func; + func = gtk_object_get_data(GTK_OBJECT(info->item), "ECanvasItem::selection_callback"); + if (func) + func(info->item, flags, info->id); + canvas->selection = g_list_remove_link(canvas->selection, list); + g_free(info); + g_list_free_1(list); + break; + } + } + } +} + |