/*******************************************************************************
* Copyright (c) 2012 Google, Inc.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Google, Inc. - initial API and implementation
*******************************************************************************/
package com.windowtester.swt.macosx.cocoa;
import java.util.ArrayList;
import java.util.List;
import org.eclipse.swt.SWT;
import org.eclipse.swt.graphics.Rectangle;
import org.eclipse.swt.internal.cocoa.CGPoint;
import org.eclipse.swt.internal.cocoa.OS;
import org.eclipse.swt.widgets.Menu;
import org.eclipse.swt.widgets.MenuItem;
import org.eclipse.swt.widgets.Widget;
import com.windowtester.swt.runtime.internal.macosx.ReflectionUtil;
import com.windowtester.swt.runtime.internal.macosx.cocoa.MacCocoa;
/**
* Native methods for Cocoa, 32-bit.
*/
public class MacCocoa32 extends MacCocoa {
static {
loadNativeLibrary();
fixMenuBarFontSize();
}
private static void loadNativeLibrary() {
System.loadLibrary("wt-cocoa");
}
int getMenuHandle(Menu menu) {
return getID(menu, "nsMenu");
}
/**
* Return the menu bar height.
*/
protected int getMenuBarHeight() {
return _getMenuBarHeight();
}
/**
* @return the Cocoa id field.
*/
static int getID(Widget control, String string) {
Object fieldObject = ReflectionUtil.getFieldObject(control, string);
return ReflectionUtil.getFieldInt(fieldObject, "id");
}
/**
* JNI function that returns the menu bar height.
*/
private static native int _getMenuBarHeight();
int getCarbonMenuHandle(Menu menu) {
int nsMenuId = getID(menu, "nsMenu");
return getCarbonMenuHandle(nsMenuId);
}
/**
* Return true if the accessibility API is enabled.
*
* To enable it: open System Preferences, select Universal Access, then
* select "Enable access for assistive devices".
* @return true if the accessibility API is enabled
*/
public boolean isAXAPIEnabled() {
return AXAPIEnabled();
}
static final native int getCarbonMenuHandle(int menuId);
/**
* Returns the value of an accessibility object's attribute.
*
* @param inUIElement The AXUIElementRef representing the accessibility object.
* @param attribute The attribute name.
* @param value On return, the value associated with the specified attribute.
* @return 0 if no error
*/
static final native int AXUIElementCopyAttributeValue(int inUIElement, int attribute, int [] value);
/**
* Convert an accessibility attribute value to a CGPoint.
*
* @param valueRef the AXValueRef
* @param point the CGPoint to hold the value
* @return true for success, false if the valueRef is not of the proper type
*/
/* $codepro.preprocessor.if version > 3.0 $ */
static final native boolean AXValueGetValueCGPoint(int valueRef, CGPoint point);
/* $codepro.preprocessor.endif $ */
/**
* Convert an accessibility attribute value to a CGSize.
*
* @param valueRef the AXValueRef
* @param point the CGSize to hold the value
* @return true for success, false if the valueRef is not of the proper type
*/
static final native boolean AXValueGetValueCGSize(int valueRef, CGSize size);
/**
* Return true if the accessibility API is enabled.
*
* To enable it: open System Preferences, select Universal Access, then
* select "Enable access for assistive devices".
* @return true if the accessibility API is enabled
*/
static final native boolean AXAPIEnabled();
static final native int AXUIElementCreateWithHIObjectAndIdentifier(int inHIObject, long inIdentifier);
static final native int CFStringCreateWithCharacters(int alloc, char[] chars, int numChars);
static final native int CFArrayGetValueAtIndex(int theArray, int idx);
/**
* Utility method to convert a java String to a CFString.
* NOTE: Caller is responsible for releasing the returned value.
*
* @param string the string to convert
* @return a CFString reference
*/
static int stringToCFStringRef(String string) {
/* $codepro.preprocessor.if version > 3.0 $ */
char [] buffer = new char [string.length ()];
string.getChars (0, buffer.length, buffer, 0);
return CFStringCreateWithCharacters (kCFAllocatorDefault, buffer, buffer.length);
/* $codepro.preprocessor.elseif version <= 3.0 $
throw new RuntimeException("Internal error: Eclipse 3.0 on Mac not supported");
$codepro.preprocessor.endif $ */
}
/**
* Given a MenuItem, return its bounding box.
*
* @param item the menu item
* @return Rectangle of item (in global coordinates), or null if something didn't work
*/
public Rectangle getMenuItemBounds(MenuItem item) {
/* $codepro.preprocessor.if version > 3.1 $ */
if (item == null)
return null;
Menu parent = item.getParent();
int index = parent.indexOf(item);
if (isMenuBarItem(item)) {
List bounds = new ArrayList();
getMenuBarVisualData(parent, bounds);
return (Rectangle) bounds.get(index);
}
int axError;
boolean axReturnCode;
// Find the OS handle of the menu. It's private in Menu, so we need this workaround.
int menuRef = getCarbonMenuHandle(parent);
// Get the AX element for the menu
int[] children = new int[1];
int axMenuRef = AXUIElementCreateWithHIObjectAndIdentifier(menuRef, (long) 0);
int cfChildren = stringToCFStringRef(kAXChildrenAttribute);
axError = AXUIElementCopyAttributeValue(axMenuRef, cfChildren, children);
OS.CFRelease(cfChildren);
OS.CFRelease(axMenuRef);
if (axError != 0 || children[0] == 0) {
System.out.println("Do you have 'System Preferences/Universal Access/Enable access for assistive devices' turned on?");
return null;
}
// The Mac menu bar includes the Apple menu and the application menu, which are
// not part of the SWT menu bar. If we're looking at the menu bar, increment
// the index to skip those two menus. (Does menu bar visibility matter?)
if ((parent.getStyle() & SWT.BAR) != 0)
index += 2;
int menuItem = CFArrayGetValueAtIndex(children[0], index);
CGPoint position = new CGPoint();
CGSize size = new CGSize();
// Get the position
int cfPosition = stringToCFStringRef(kAXPositionAttribute);
int[] positionRef = new int[1];
axError = AXUIElementCopyAttributeValue(menuItem, cfPosition, positionRef);
axReturnCode = AXValueGetValueCGPoint(positionRef[0], position);
OS.CFRelease(positionRef[0]);
OS.CFRelease(cfPosition);
if (!axReturnCode) {
System.out.println("Internal error: type mismatch in native code");
return null;
}
// Get the size
int cfSize = stringToCFStringRef(kAXSizeAttribute);
int[] sizeRef = new int[1];
axError = AXUIElementCopyAttributeValue(menuItem, cfSize, sizeRef);
axReturnCode = AXValueGetValueCGSize(sizeRef[0], size);
OS.CFRelease(sizeRef[0]);
OS.CFRelease(cfSize);
if (!axReturnCode) {
System.out.println("Internal error: type mismatch in native code");
return null;
}
Rectangle result = new Rectangle((int)position.x, (int)position.y, (int)size.width, (int)size.height);
//System.out.println(result);
return result;
/* $codepro.preprocessor.elseif version <= 3.1 $
throw new RuntimeException("Internal error: Eclipse 3.0 on Mac not supported");
$codepro.preprocessor.endif $ */
}
}