Many resources are needed to download a project. Please understand that we have to compensate our server costs. Thank you in advance. Project price only 1 $
You can buy this project and download/modify it how often you want.
/*
* Copyright (c) 2010, 2015, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code 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
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
package com.sun.javafx.scene.control.behavior;
import com.sun.javafx.util.Utils;
import javafx.animation.KeyFrame;
import javafx.animation.Timeline;
import javafx.event.ActionEvent;
import javafx.event.EventHandler;
import javafx.geometry.Orientation;
import javafx.scene.control.ScrollBar;
import javafx.scene.control.Skin;
import com.sun.javafx.scene.control.inputmap.InputMap;
import javafx.util.Duration;
import static javafx.scene.input.KeyCode.*;
import static javafx.scene.input.KeyEvent.KEY_RELEASED;
/**
* A Behavior implementation for ScrollBars.
*
*/
public class ScrollBarBehavior extends BehaviorBase {
private final InputMap inputMap;
/***************************************************************************
* *
* Constructors *
* *
**************************************************************************/
public ScrollBarBehavior(ScrollBar scrollBar) {
super(scrollBar);
// create a map for scrollbar-specific mappings (this reuses the default
// InputMap installed on the control, if it is non-null, allowing us to pick up any user-specified mappings)
inputMap = createInputMap();
// scrollbar-specific mappings for key and mouse input
addDefaultMapping(inputMap,
new InputMap.KeyMapping(HOME, KEY_RELEASED, e -> home()),
new InputMap.KeyMapping(END, KEY_RELEASED, e -> end())
);
// create two child input maps for horizontal and vertical scrollbars
InputMap horizontalInputMap = new InputMap<>(scrollBar);
horizontalInputMap.setInterceptor(e -> scrollBar.getOrientation() != Orientation.HORIZONTAL);
horizontalInputMap.getMappings().addAll(
new InputMap.KeyMapping(LEFT, e -> rtl(scrollBar, this::incrementValue, this::decrementValue)),
new InputMap.KeyMapping(KP_LEFT, e -> rtl(scrollBar, this::incrementValue, this::decrementValue)),
new InputMap.KeyMapping(RIGHT, e -> rtl(scrollBar, this::decrementValue, this::incrementValue)),
new InputMap.KeyMapping(KP_RIGHT, e -> rtl(scrollBar, this::decrementValue, this::incrementValue))
);
addDefaultChildMap(inputMap, horizontalInputMap);
InputMap verticalInputMap = new InputMap<>(scrollBar);
verticalInputMap.setInterceptor(e -> scrollBar.getOrientation() != Orientation.VERTICAL);
verticalInputMap.getMappings().addAll(
new InputMap.KeyMapping(UP, e -> decrementValue()),
new InputMap.KeyMapping(KP_UP, e -> decrementValue()),
new InputMap.KeyMapping(DOWN, e -> incrementValue()),
new InputMap.KeyMapping(KP_DOWN, e -> incrementValue())
);
addDefaultChildMap(inputMap, verticalInputMap);
}
/***************************************************************************
* *
* Functions *
* *
**************************************************************************/
@Override public InputMap getInputMap() {
return inputMap;
}
private void home() {
getNode().setValue(getNode().getMin());
}
private void decrementValue() {
getNode().adjustValue(0);
}
private void end() {
getNode().setValue(getNode().getMax());
}
private void incrementValue() {
getNode().adjustValue(1);
}
/***************************************************************************
* *
* Mouse event handling *
* *
**************************************************************************/
/**
* This timeline is used to adjust the value of the bar when the
* track has been pressed but not released.
*/
Timeline timeline;
/**
* Invoked by the ScrollBar {@link Skin} implementation whenever a mouse
* press occurs on the "track" of the bar. This will cause the thumb to
* be moved by some amount.
*
* @param position The mouse position on track with 0.0 being beginning of track and 1.0 being the end
*/
public void trackPress(double position) {
/* We can get a press if someone presses an end button. In that
* case, we don't want to start a timeline because the end button
* will have already done so. We can detect that because the timeline
* will not be null.
*/
if (timeline != null) return;
// determine the percentage of the way between min and max
// represented by this mouse event
final ScrollBar bar = getNode();
if (!bar.isFocused() && bar.isFocusTraversable()) bar.requestFocus();
final double pos = position;
final boolean incrementing = (pos > ((bar.getValue() - bar.getMin())/(bar.getMax() - bar.getMin())));
timeline = new Timeline();
timeline.setCycleCount(Timeline.INDEFINITE);
final EventHandler step =
event -> {
boolean i = (pos > ((bar.getValue() - bar.getMin())/(bar.getMax() - bar.getMin())));
if (incrementing == i) {
// we started incrementing and still are, or we
// started decrementing and still are
bar.adjustValue(pos);
}
else {
stopTimeline();
}
};
final KeyFrame kf = new KeyFrame(Duration.millis(200), step);
timeline.getKeyFrames().add(kf);
// do the first step immediately
timeline.play();
step.handle(null);
}
/**
*/
public void trackRelease() {
stopTimeline();
}
/**
* Invoked by the ScrollBar {@link Skin} implementation whenever a mouse
* press occurs on the decrement button of the bar.
*/
public void decButtonPressed() {
final ScrollBar bar = getNode();
if (!bar.isFocused() && bar.isFocusTraversable()) bar.requestFocus();
stopTimeline();
timeline = new Timeline();
timeline.setCycleCount(Timeline.INDEFINITE);
final EventHandler dec =
event -> {
if (bar.getValue() > bar.getMin()) {
bar.decrement();
}
else {
stopTimeline();
}
};
final KeyFrame kf = new KeyFrame(Duration.millis(200), dec);
timeline.getKeyFrames().add(kf);
// do the first step immediately
timeline.play();
dec.handle(null);
}
/**
*/
public void decButtonReleased() {
stopTimeline();
}
/**
* Invoked by the ScrollBar {@link Skin} implementation whenever a mouse
* press occurs on the increment button of the bar.
*/
public void incButtonPressed() {
final ScrollBar bar = getNode();
if (!bar.isFocused() && bar.isFocusTraversable()) bar.requestFocus();
stopTimeline();
timeline = new Timeline();
timeline.setCycleCount(Timeline.INDEFINITE);
final EventHandler inc =
event -> {
if (bar.getValue() < bar.getMax()) {
bar.increment();
}
else {
stopTimeline();
}
};
final KeyFrame kf = new KeyFrame(Duration.millis(200), inc);
timeline.getKeyFrames().add(kf);
// do the first step immediately
timeline.play();
inc.handle(null);
}
/**
*/
public void incButtonReleased() {
stopTimeline();
}
/**
* @param position The mouse position on track with 0.0 being begining of track and 1.0 being the end
*/
//public function thumbPressed(e:MouseEvent, position:Number):Void {
//}
/**
* @param position The mouse position on track with 0.0 being begining of track and 1.0 being the end
*/
public void thumbDragged(double position) {
final ScrollBar scrollbar = getNode();
// Stop the timeline for continuous increments as drags take precedence
stopTimeline();
if (!scrollbar.isFocused() && scrollbar.isFocusTraversable()) scrollbar.requestFocus();
double newValue = (position * (scrollbar.getMax() - scrollbar.getMin())) + scrollbar.getMin();
if (!Double.isNaN(newValue)) {
scrollbar.setValue(Utils.clamp(scrollbar.getMin(), newValue, scrollbar.getMax()));
}
}
private void stopTimeline() {
if (timeline != null) {
timeline.stop();
timeline = null;
}
}
}
