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-rw-r--r--widgets/misc/e-canvas.c301
1 files changed, 0 insertions, 301 deletions
diff --git a/widgets/misc/e-canvas.c b/widgets/misc/e-canvas.c
deleted file mode 100644
index 850e438386..0000000000
--- a/widgets/misc/e-canvas.c
+++ /dev/null
@@ -1,301 +0,0 @@
-/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
-/*
- * e-canvas.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 <gnome.h>
-#include "e-canvas.h"
-static void e_canvas_init (ECanvas *card);
-static void e_canvas_class_init (ECanvasClass *klass);
-static gint e_canvas_key (GtkWidget *widget,
- GdkEventKey *event);
-
-static gint e_canvas_focus_in (GtkWidget *widget,
- GdkEventFocus *event);
-static gint e_canvas_focus_out (GtkWidget *widget,
- GdkEventFocus *event);
-
-static int emit_event (GnomeCanvas *canvas, GdkEvent *event);
-
-static GnomeCanvasClass *parent_class = NULL;
-
-GtkType
-e_canvas_get_type (void)
-{
- static GtkType canvas_type = 0;
-
- if (!canvas_type)
- {
- static const GtkTypeInfo canvas_info =
- {
- "ECanvas",
- sizeof (ECanvas),
- sizeof (ECanvasClass),
- (GtkClassInitFunc) e_canvas_class_init,
- (GtkObjectInitFunc) e_canvas_init,
- /* reserved_1 */ NULL,
- /* reserved_2 */ NULL,
- (GtkClassInitFunc) NULL,
- };
-
- canvas_type = gtk_type_unique (gnome_canvas_get_type (), &canvas_info);
- }
-
- return canvas_type;
-}
-
-static void
-e_canvas_class_init (ECanvasClass *klass)
-{
- GtkObjectClass *object_class;
- GnomeCanvasClass *canvas_class;
- GtkWidgetClass *widget_class;
-
- object_class = (GtkObjectClass*) klass;
- canvas_class = (GnomeCanvasClass *) klass;
- widget_class = (GtkWidgetClass *) klass;
-
- parent_class = gtk_type_class (gnome_canvas_get_type ());
-
- widget_class->key_press_event = e_canvas_key;
- widget_class->key_release_event = e_canvas_key;
- widget_class->focus_in_event = e_canvas_focus_in;
- widget_class->focus_out_event = e_canvas_focus_out;
-}
-
-static void
-e_canvas_init (ECanvas *canvas)
-{
-}
-
-GtkWidget *
-e_canvas_new()
-{
- return GTK_WIDGET (gtk_type_new (e_canvas_get_type ()));
-}
-
-
-/* Returns whether the item is an inferior of or is equal to the parent. */
-static int
-is_descendant (GnomeCanvasItem *item, GnomeCanvasItem *parent)
-{
- for (; item; item = item->parent)
- if (item == parent)
- return TRUE;
-
- return FALSE;
-}
-
-/* Emits an event for an item in the canvas, be it the current item, grabbed
- * item, or focused item, as appropriate.
- */
-static int
-emit_event (GnomeCanvas *canvas, GdkEvent *event)
-{
- GdkEvent ev;
- gint finished;
- GnomeCanvasItem *item;
- GnomeCanvasItem *parent;
- guint mask;
-
- /* Perform checks for grabbed items */
-
- if (canvas->grabbed_item && !is_descendant (canvas->current_item, canvas->grabbed_item))
- return FALSE;
-
- if (canvas->grabbed_item) {
- switch (event->type) {
- case GDK_ENTER_NOTIFY:
- mask = GDK_ENTER_NOTIFY_MASK;
- break;
-
- case GDK_LEAVE_NOTIFY:
- mask = GDK_LEAVE_NOTIFY_MASK;
- break;
-
- case GDK_MOTION_NOTIFY:
- mask = GDK_POINTER_MOTION_MASK;
- break;
-
- case GDK_BUTTON_PRESS:
- case GDK_2BUTTON_PRESS:
- case GDK_3BUTTON_PRESS:
- mask = GDK_BUTTON_PRESS_MASK;
- break;
-
- case GDK_BUTTON_RELEASE:
- mask = GDK_BUTTON_RELEASE_MASK;
- break;
-
- case GDK_KEY_PRESS:
- mask = GDK_KEY_PRESS_MASK;
- break;
-
- case GDK_KEY_RELEASE:
- mask = GDK_KEY_RELEASE_MASK;
- break;
-
- default:
- mask = 0;
- break;
- }
-
- if (!(mask & canvas->grabbed_event_mask))
- return FALSE;
- }
-
- /* Convert to world coordinates -- we have two cases because of diferent
- * offsets of the fields in the event structures.
- */
-
- ev = *event;
-
- switch (ev.type) {
- case GDK_ENTER_NOTIFY:
- case GDK_LEAVE_NOTIFY:
- gnome_canvas_window_to_world (canvas,
- ev.crossing.x, ev.crossing.y,
- &ev.crossing.x, &ev.crossing.y);
- break;
-
- case GDK_MOTION_NOTIFY:
- case GDK_BUTTON_PRESS:
- case GDK_2BUTTON_PRESS:
- case GDK_3BUTTON_PRESS:
- case GDK_BUTTON_RELEASE:
- gnome_canvas_window_to_world (canvas,
- ev.motion.x, ev.motion.y,
- &ev.motion.x, &ev.motion.y);
- break;
-
- default:
- break;
- }
-
- /* Choose where we send the event */
-
- item = canvas->current_item;
-
- if (canvas->focused_item
- && ((event->type == GDK_KEY_PRESS) || (event->type == GDK_KEY_RELEASE) || (event->type == GDK_FOCUS_CHANGE)))
- item = canvas->focused_item;
-
- /* The event is propagated up the hierarchy (for if someone connected to
- * a group instead of a leaf event), and emission is stopped if a
- * handler returns TRUE, just like for GtkWidget events.
- */
-
- finished = FALSE;
-
- while (item && !finished) {
- gtk_object_ref (GTK_OBJECT (item));
-
- gtk_signal_emit_by_name (GTK_OBJECT (item), "event",
- &ev,
- &finished);
-
- if (GTK_OBJECT_DESTROYED (item))
- finished = TRUE;
-
- parent = item->parent;
- gtk_object_unref (GTK_OBJECT (item));
-
- item = parent;
- }
-
- return finished;
-}
-
-/* Key event handler for the canvas */
-static gint
-e_canvas_key (GtkWidget *widget, GdkEventKey *event)
-{
- GnomeCanvas *canvas;
-
- g_return_val_if_fail (widget != NULL, FALSE);
- g_return_val_if_fail (GNOME_IS_CANVAS (widget), FALSE);
- g_return_val_if_fail (event != NULL, FALSE);
-
- canvas = GNOME_CANVAS (widget);
-
- return emit_event (canvas, (GdkEvent *) event);
-}
-
-
-/**
- * e_canvas_item_grab_focus:
- * @item: A canvas item.
- *
- * Makes the specified item take the keyboard focus, so all keyboard events will
- * be sent to it. If the canvas widget itself did not have the focus, it grabs
- * it as well.
- **/
-void
-e_canvas_item_grab_focus (GnomeCanvasItem *item)
-{
- GnomeCanvasItem *focused_item;
- GdkEvent ev;
-
- g_return_if_fail (item != NULL);
- g_return_if_fail (GNOME_IS_CANVAS_ITEM (item));
- g_return_if_fail (GTK_WIDGET_CAN_FOCUS (GTK_WIDGET (item->canvas)));
-
- focused_item = item->canvas->focused_item;
-
- if (focused_item) {
- ev.focus_change.type = GDK_FOCUS_CHANGE;
- ev.focus_change.window = GTK_LAYOUT (item->canvas)->bin_window;
- ev.focus_change.send_event = FALSE;
- ev.focus_change.in = FALSE;
-
- emit_event (item->canvas, &ev);
- }
-
- item->canvas->focused_item = item;
- gtk_widget_grab_focus (GTK_WIDGET (item->canvas));
-}
-
-/* Focus in handler for the canvas */
-static gint
-e_canvas_focus_in (GtkWidget *widget, GdkEventFocus *event)
-{
- GnomeCanvas *canvas;
-
- canvas = GNOME_CANVAS (widget);
-
- if (canvas->focused_item)
- return emit_event (canvas, (GdkEvent *) event);
- else
- return FALSE;
-}
-
-/* Focus out handler for the canvas */
-static gint
-e_canvas_focus_out (GtkWidget *widget, GdkEventFocus *event)
-{
- GnomeCanvas *canvas;
-
- canvas = GNOME_CANVAS (widget);
-
- if (canvas->focused_item)
- return emit_event (canvas, (GdkEvent *) event);
- else
- return FALSE;
-}
generated by cgit (git 2.34.1) at 2024-12-28 21:41:03 +0800