/* * Java ATK Wrapper for GNOME * Copyright (C) 2009 Sun Microsystems Inc. * Copyright (C) 2015 Magdalen Berns * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * This library 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 * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ package org.GNOME.Accessibility; import javax.accessibility.*; import java.awt.Point; import java.awt.Rectangle; import java.lang.ref.WeakReference; public class AtkComponent { WeakReference _ac; WeakReference _acc_component; public AtkComponent (AccessibleContext ac) { super(); this._ac = new WeakReference(ac); this._acc_component = new WeakReference(ac.getAccessibleComponent()); } public static AtkComponent createAtkComponent(AccessibleContext ac){ return AtkUtil.invokeInSwing ( () -> { return new AtkComponent(ac); }, null); } static public Point getWindowLocation(AccessibleContext ac) { while (ac != null) { AccessibleRole role = ac.getAccessibleRole(); if (role == AccessibleRole.DIALOG || role == AccessibleRole.FRAME || role == AccessibleRole.WINDOW) { AccessibleComponent acc_comp = ac.getAccessibleComponent(); if (acc_comp == null) return null; return acc_comp.getLocationOnScreen(); } Accessible parent = ac.getAccessibleParent(); if (parent == null) return null; ac = parent.getAccessibleContext(); } return null; } // Return the position of the object relative to the coordinate type public static Point getComponentOrigin(AccessibleContext ac, AccessibleComponent acc_component, int coord_type) { if (coord_type == AtkCoordType.SCREEN) return acc_component.getLocationOnScreen(); if (coord_type == AtkCoordType.WINDOW) { Point win_p = getWindowLocation(ac); if (win_p == null) return null; Point p = acc_component.getLocationOnScreen(); if (p == null) return null; p.translate(-win_p.x, -win_p.y); return p; } if (coord_type == AtkCoordType.PARENT) return acc_component.getLocation(); return null; } // Return the position of the parent relative to the coordinate type public static Point getParentOrigin(AccessibleContext ac, AccessibleComponent acc_component, int coord_type) { if (coord_type == AtkCoordType.PARENT) return new Point(0, 0); Accessible parent = ac.getAccessibleParent(); if (parent == null) return null; AccessibleContext parent_ac = parent.getAccessibleContext(); if (parent_ac == null) return null; AccessibleComponent parent_component = parent_ac.getAccessibleComponent(); if (parent_component == null) return null; if (coord_type == AtkCoordType.SCREEN) { return parent_component.getLocationOnScreen(); } if (coord_type == AtkCoordType.WINDOW) { Point window_origin = getWindowLocation(ac); if (window_origin == null) return null; Point parent_origin = parent_component.getLocationOnScreen(); if (parent_origin == null) return null; parent_origin.translate(-window_origin.x, -window_origin.y); return parent_origin; } return null; } public boolean contains (int x, int y, int coord_type) { AccessibleContext ac = _ac.get(); if (ac == null) return false; AccessibleComponent acc_component = _acc_component.get(); if (acc_component == null) return false; return AtkUtil.invokeInSwing ( () -> { if(acc_component.isVisible()){ Point p = getComponentOrigin(ac, acc_component, coord_type); if (p == null) return false; return acc_component.contains(new Point(x - p.x, y - p.y)); } return false; }, false); } public AccessibleContext get_accessible_at_point (int x, int y, int coord_type) { AccessibleContext ac = _ac.get(); if (ac == null) return null; AccessibleComponent acc_component = _acc_component.get(); if (acc_component == null) return null; return AtkUtil.invokeInSwing ( () -> { if(acc_component.isVisible()){ Point p = getComponentOrigin(ac, acc_component, coord_type); if (p == null) return null; Accessible accessible = acc_component.getAccessibleAt(new Point(x - p.x, y - p.y)); if (accessible == null) return null; return accessible.getAccessibleContext(); } return null; }, null); } public boolean grab_focus () { AccessibleComponent acc_component = _acc_component.get(); if (acc_component == null) return false; return AtkUtil.invokeInSwing ( () -> { if (!acc_component.isFocusTraversable()) return false; acc_component.requestFocus(); return true; }, false); } public boolean set_extents(int x, int y, int width, int height, int coord_type) { AccessibleContext ac = _ac.get(); if (ac == null) return false; AccessibleComponent acc_component = _acc_component.get(); if (acc_component == null) return false; return AtkUtil.invokeInSwing( () -> { if(acc_component.isVisible()){ Point p = getParentOrigin(ac, acc_component, coord_type); if (p == null) return false; acc_component.setBounds(new Rectangle(x - p.x, y - p.y, width, height)); return true; } return false; }, false); } public Rectangle get_extents(int coord_type) { AccessibleContext ac = _ac.get(); if (ac == null) return null; AccessibleComponent acc_component = _acc_component.get(); if (acc_component == null) return null; return AtkUtil.invokeInSwing ( () -> { if(acc_component.isVisible()){ Rectangle rect = acc_component.getBounds(); if (rect == null) return null; Point p = getParentOrigin(ac, acc_component, coord_type); if (p == null) return null; rect.x += p.x; rect.y += p.y; return rect; } return null; },null); } public int get_layer () { AccessibleContext ac = _ac.get(); if (ac == null) return AtkLayer.INVALID; return AtkUtil.invokeInSwing ( () -> { AccessibleRole role = ac.getAccessibleRole(); if (role == AccessibleRole.MENU || role == AccessibleRole.MENU_ITEM || role == AccessibleRole.POPUP_MENU ) { return AtkLayer.POPUP; } if (role == AccessibleRole.INTERNAL_FRAME) { return AtkLayer.MDI; } if (role == AccessibleRole.GLASS_PANE) { return AtkLayer.OVERLAY; } if (role == AccessibleRole.CANVAS || role == AccessibleRole.ROOT_PANE || role == AccessibleRole.LAYERED_PANE ) { return AtkLayer.CANVAS; } if (role == AccessibleRole.WINDOW) { return AtkLayer.WINDOW; } return AtkLayer.WIDGET; }, AtkLayer.INVALID); } }