Java Code Examples for javax.swing.JScrollBar#getValue()

The following examples show how to use javax.swing.JScrollBar#getValue() . You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.
Example 1
Source File: Test6526631.java    From dragonwell8_jdk with GNU General Public License v2.0 6 votes vote down vote up 
public void validateThird() {
    JViewport viewport = this.pane.getViewport();
    JScrollBar scroller = this.pane.getHorizontalScrollBar();
    if (!scroller.getComponentOrientation().equals(ComponentOrientation.RIGHT_TO_LEFT)) {
        throw new Error("unexpected component orientation");
    }
    int value = scroller.getValue();
    if (value != 0) {
        throw new Error("unexpected scroll value");
    }
    int extent = viewport.getExtentSize().width;
    if (extent != scroller.getVisibleAmount()) {
        throw new Error("unexpected visible amount");
    }
    int size = viewport.getViewSize().width;
    if (size != scroller.getMaximum()) {
        throw new Error("unexpected maximum");
    }
    int pos = size - extent - value;
    if (pos != viewport.getViewPosition().x) {
        throw new Error("unexpected position");
    }
}
Example 2
Source File: Test6526631.java    From TencentKona-8 with GNU General Public License v2.0 6 votes vote down vote up 
public void validateThird() {
    JViewport viewport = this.pane.getViewport();
    JScrollBar scroller = this.pane.getHorizontalScrollBar();
    if (!scroller.getComponentOrientation().equals(ComponentOrientation.RIGHT_TO_LEFT)) {
        throw new Error("unexpected component orientation");
    }
    int value = scroller.getValue();
    if (value != 0) {
        throw new Error("unexpected scroll value");
    }
    int extent = viewport.getExtentSize().width;
    if (extent != scroller.getVisibleAmount()) {
        throw new Error("unexpected visible amount");
    }
    int size = viewport.getViewSize().width;
    if (size != scroller.getMaximum()) {
        throw new Error("unexpected maximum");
    }
    int pos = size - extent - value;
    if (pos != viewport.getViewPosition().x) {
        throw new Error("unexpected position");
    }
}
Example 3
Source File: Test6526631.java    From jdk8u60 with GNU General Public License v2.0 6 votes vote down vote up 
public void validateThird() {
    JViewport viewport = this.pane.getViewport();
    JScrollBar scroller = this.pane.getHorizontalScrollBar();
    if (!scroller.getComponentOrientation().equals(ComponentOrientation.RIGHT_TO_LEFT)) {
        throw new Error("unexpected component orientation");
    }
    int value = scroller.getValue();
    if (value != 0) {
        throw new Error("unexpected scroll value");
    }
    int extent = viewport.getExtentSize().width;
    if (extent != scroller.getVisibleAmount()) {
        throw new Error("unexpected visible amount");
    }
    int size = viewport.getViewSize().width;
    if (size != scroller.getMaximum()) {
        throw new Error("unexpected maximum");
    }
    int pos = size - extent - value;
    if (pos != viewport.getViewPosition().x) {
        throw new Error("unexpected position");
    }
}
Example 4
Source File: SeaGlassScrollPaneUI.java    From seaglass with Apache License 2.0 6 votes vote down vote up 
void scrollByBlock(JScrollBar scrollbar, int direction) {
    // This method is called from BasicScrollPaneUI to implement wheel
    // scrolling, and also from scrollByBlock().
    int oldValue = scrollbar.getValue();
    int blockIncrement = scrollbar.getBlockIncrement(direction);
    int delta = blockIncrement * ((direction > 0) ? +1 : -1);
    int newValue = oldValue + delta;

    // Check for overflow.
    if (delta > 0 && newValue < oldValue) {
        newValue = scrollbar.getMaximum();
    } else if (delta < 0 && newValue > oldValue) {
        newValue = scrollbar.getMinimum();
    }

    scrollbar.setValue(newValue);
}
Example 5
Source File: Test6526631.java    From jdk8u-dev-jdk with GNU General Public License v2.0 6 votes vote down vote up 
public void validateThird() {
    JViewport viewport = this.pane.getViewport();
    JScrollBar scroller = this.pane.getHorizontalScrollBar();
    if (!scroller.getComponentOrientation().equals(ComponentOrientation.RIGHT_TO_LEFT)) {
        throw new Error("unexpected component orientation");
    }
    int value = scroller.getValue();
    if (value != 0) {
        throw new Error("unexpected scroll value");
    }
    int extent = viewport.getExtentSize().width;
    if (extent != scroller.getVisibleAmount()) {
        throw new Error("unexpected visible amount");
    }
    int size = viewport.getViewSize().width;
    if (size != scroller.getMaximum()) {
        throw new Error("unexpected maximum");
    }
    int pos = size - extent - value;
    if (pos != viewport.getViewPosition().x) {
        throw new Error("unexpected position");
    }
}
Example 6
Source File: ChatPanel.java    From xyTalk-pc with GNU Affero General Public License v3.0 6 votes vote down vote up 
/**
 * 添加一条消息到最后，或者更新已有消息
 */
public void addOrUpdateMessageItem() {
	Message message = messageService.findLastMessage(roomId);
	if (message == null || message.isDeleted()) {
		return;
	}

	// 已有消息更新状态
	int pos = findMessageItemPositionInViewReverse(message.getId());
	if (pos > -1) {
		messageItems.get(pos).setUpdatedAt(message.getTimestamp());
		messagePanel.getMessageListView().notifyItemChanged(pos);
		return;
	}

	// 插入新的消息
	MessageItem messageItem = new MessageItem(message, UserCache.CurrentBareJid);
	this.messageItems.add(messageItem);
	messagePanel.getMessageListView().notifyItemInserted(messageItems.size() - 1, false);

	// 只有当滚动条在最底部最，新消到来后才自动滚动到底部
	JScrollBar scrollBar = messagePanel.getMessageListView().getVerticalScrollBar();
	if (scrollBar.getValue() == (scrollBar.getModel().getMaximum() - scrollBar.getModel().getExtent())) {
		messagePanel.getMessageListView().setAutoScrollToBottom();
	}
}
Example 7
Source File: Test6526631.java    From openjdk-8 with GNU General Public License v2.0 6 votes vote down vote up 
public void validateThird() {
    JViewport viewport = this.pane.getViewport();
    JScrollBar scroller = this.pane.getHorizontalScrollBar();
    if (!scroller.getComponentOrientation().equals(ComponentOrientation.RIGHT_TO_LEFT)) {
        throw new Error("unexpected component orientation");
    }
    int value = scroller.getValue();
    if (value != 0) {
        throw new Error("unexpected scroll value");
    }
    int extent = viewport.getExtentSize().width;
    if (extent != scroller.getVisibleAmount()) {
        throw new Error("unexpected visible amount");
    }
    int size = viewport.getViewSize().width;
    if (size != scroller.getMaximum()) {
        throw new Error("unexpected maximum");
    }
    int pos = size - extent - value;
    if (pos != viewport.getViewPosition().x) {
        throw new Error("unexpected position");
    }
}
Example 8
Source File: Test6526631.java    From openjdk-jdk8u-backup with GNU General Public License v2.0 6 votes vote down vote up 
public void validateThird() {
    JViewport viewport = this.pane.getViewport();
    JScrollBar scroller = this.pane.getHorizontalScrollBar();
    if (!scroller.getComponentOrientation().equals(ComponentOrientation.RIGHT_TO_LEFT)) {
        throw new Error("unexpected component orientation");
    }
    int value = scroller.getValue();
    if (value != 0) {
        throw new Error("unexpected scroll value");
    }
    int extent = viewport.getExtentSize().width;
    if (extent != scroller.getVisibleAmount()) {
        throw new Error("unexpected visible amount");
    }
    int size = viewport.getViewSize().width;
    if (size != scroller.getMaximum()) {
        throw new Error("unexpected maximum");
    }
    int pos = size - extent - value;
    if (pos != viewport.getViewPosition().x) {
        throw new Error("unexpected position");
    }
}
Example 9
Source File: Test6526631.java    From openjdk-jdk9 with GNU General Public License v2.0 6 votes vote down vote up 
public void validateThird() {
    JViewport viewport = this.pane.getViewport();
    JScrollBar scroller = this.pane.getHorizontalScrollBar();
    if (!scroller.getComponentOrientation().equals(ComponentOrientation.RIGHT_TO_LEFT)) {
        throw new Error("unexpected component orientation");
    }
    int value = scroller.getValue();
    if (value != 0) {
        throw new Error("unexpected scroll value");
    }
    int extent = viewport.getExtentSize().width;
    if (extent != scroller.getVisibleAmount()) {
        throw new Error("unexpected visible amount");
    }
    int size = viewport.getViewSize().width;
    if (size != scroller.getMaximum()) {
        throw new Error("unexpected maximum");
    }
    int pos = size - extent - value;
    if (pos != viewport.getViewPosition().x) {
        throw new Error("unexpected position");
    }
}
Example 10
Source File: Test6526631.java    From jdk8u_jdk with GNU General Public License v2.0 6 votes vote down vote up 
public void validateThird() {
    JViewport viewport = this.pane.getViewport();
    JScrollBar scroller = this.pane.getHorizontalScrollBar();
    if (!scroller.getComponentOrientation().equals(ComponentOrientation.RIGHT_TO_LEFT)) {
        throw new Error("unexpected component orientation");
    }
    int value = scroller.getValue();
    if (value != 0) {
        throw new Error("unexpected scroll value");
    }
    int extent = viewport.getExtentSize().width;
    if (extent != scroller.getVisibleAmount()) {
        throw new Error("unexpected visible amount");
    }
    int size = viewport.getViewSize().width;
    if (size != scroller.getMaximum()) {
        throw new Error("unexpected maximum");
    }
    int pos = size - extent - value;
    if (pos != viewport.getViewPosition().x) {
        throw new Error("unexpected position");
    }
}
Example 11
Source File: Test6526631.java    From hottub with GNU General Public License v2.0 6 votes vote down vote up 
public void validateThird() {
    JViewport viewport = this.pane.getViewport();
    JScrollBar scroller = this.pane.getHorizontalScrollBar();
    if (!scroller.getComponentOrientation().equals(ComponentOrientation.RIGHT_TO_LEFT)) {
        throw new Error("unexpected component orientation");
    }
    int value = scroller.getValue();
    if (value != 0) {
        throw new Error("unexpected scroll value");
    }
    int extent = viewport.getExtentSize().width;
    if (extent != scroller.getVisibleAmount()) {
        throw new Error("unexpected visible amount");
    }
    int size = viewport.getViewSize().width;
    if (size != scroller.getMaximum()) {
        throw new Error("unexpected maximum");
    }
    int pos = size - extent - value;
    if (pos != viewport.getViewPosition().x) {
        throw new Error("unexpected position");
    }
}
Example 12
Source File: Test6526631.java    From openjdk-8-source with GNU General Public License v2.0 6 votes vote down vote up 
public void validateThird() {
    JViewport viewport = this.pane.getViewport();
    JScrollBar scroller = this.pane.getHorizontalScrollBar();
    if (!scroller.getComponentOrientation().equals(ComponentOrientation.RIGHT_TO_LEFT)) {
        throw new Error("unexpected component orientation");
    }
    int value = scroller.getValue();
    if (value != 0) {
        throw new Error("unexpected scroll value");
    }
    int extent = viewport.getExtentSize().width;
    if (extent != scroller.getVisibleAmount()) {
        throw new Error("unexpected visible amount");
    }
    int size = viewport.getViewSize().width;
    if (size != scroller.getMaximum()) {
        throw new Error("unexpected maximum");
    }
    int pos = size - extent - value;
    if (pos != viewport.getViewPosition().x) {
        throw new Error("unexpected position");
    }
}
Example 13
Source File: ProfilerTableContainer.java    From netbeans with Apache License 2.0 5 votes vote down vote up 
private static void scroll(JScrollBar scroller, MouseWheelEvent event) {
    if (event.getScrollType() == MouseWheelEvent.WHEEL_UNIT_SCROLL) {
        int direction = event.getUnitsToScroll() < 0 ? -1 : 1;
        int increment = scroller.getUnitIncrement(direction);
        int amount = event.getScrollAmount();
        int oldValue = scroller.getValue();
        int newValue = oldValue + increment * amount * direction;
        if (oldValue != newValue) scroller.setValue(newValue);
        event.consume();
    }
}
Example 14
Source File: ChartPanel.java    From visualvm with GNU General Public License v2.0 5 votes vote down vote up 
private static void scroll(JScrollBar scrollBar, MouseWheelEvent e) {
    if (e.getScrollType() == MouseWheelEvent.WHEEL_UNIT_SCROLL) {
        int unitsToScroll = e.getUnitsToScroll();
        int direction = unitsToScroll < 0 ? -1 : 1;
        if (unitsToScroll != 0) {
            int increment = scrollBar.getUnitIncrement(direction);
            int oldValue = scrollBar.getValue();
            int newValue = oldValue + increment * unitsToScroll;
            newValue = Math.max(Math.min(newValue, scrollBar.getMaximum() -
                    scrollBar.getVisibleAmount()), scrollBar.getMinimum());
            if (oldValue != newValue) scrollBar.setValue(newValue);
        }
    }
}
Example 15
Source File: ProfilerTableContainer.java    From visualvm with GNU General Public License v2.0 5 votes vote down vote up 
private static void scroll(JScrollBar scroller, MouseWheelEvent event) {
    if (event.getScrollType() == MouseWheelEvent.WHEEL_UNIT_SCROLL) {
        int direction = event.getUnitsToScroll() < 0 ? -1 : 1;
        int increment = scroller.getUnitIncrement(direction);
        int amount = event.getScrollAmount();
        int oldValue = scroller.getValue();
        int newValue = oldValue + increment * amount * direction;
        if (oldValue != newValue) scroller.setValue(newValue);
        event.consume();
    }
}
Example 16
Source File: ChartPanel.java    From visualvm with GNU General Public License v2.0 5 votes vote down vote up 
private static void scroll(JScrollBar scrollBar, MouseWheelEvent e) {
    if (e.getScrollType() == MouseWheelEvent.WHEEL_UNIT_SCROLL) {
        int unitsToScroll = e.getUnitsToScroll();
        int direction = unitsToScroll < 0 ? -1 : 1;
        if (unitsToScroll != 0) {
            int increment = scrollBar.getUnitIncrement(direction);
            int oldValue = scrollBar.getValue();
            int newValue = oldValue + increment * unitsToScroll;
            newValue = Math.max(Math.min(newValue, scrollBar.getMaximum() -
                    scrollBar.getVisibleAmount()), scrollBar.getMinimum());
            if (oldValue != newValue) scrollBar.setValue(newValue);
        }
    }
}
Example 17
Source File: ChartPanel.java    From netbeans with Apache License 2.0 5 votes vote down vote up 
private static void scroll(JScrollBar scrollBar, MouseWheelEvent e) {
    if (e.getScrollType() == MouseWheelEvent.WHEEL_UNIT_SCROLL) {
        int unitsToScroll = e.getUnitsToScroll();
        int direction = unitsToScroll < 0 ? -1 : 1;
        if (unitsToScroll != 0) {
            int increment = scrollBar.getUnitIncrement(direction);
            int oldValue = scrollBar.getValue();
            int newValue = oldValue + increment * unitsToScroll;
            newValue = Math.max(Math.min(newValue, scrollBar.getMaximum() -
                    scrollBar.getVisibleAmount()), scrollBar.getMinimum());
            if (oldValue != newValue) scrollBar.setValue(newValue);
        }
    }
}
Example 18
Source File: SmoothScrollPaneUI.java    From netbeans with Apache License 2.0 5 votes vote down vote up 
private void mouseWheelMoved(MouseWheelEvent e) {
    /* The code in this method is taken directly from Pavel Fatin's original IntelliJ patch.
    Some formatting changes have been applied. */
    /* The shift modifier will be enabled for horizontal touchbar scroll events, even when the
    actual shift key is not pressed, on both Windows and MacOS (though not on Java 8 on
    Windows). */
    JScrollBar scrollbar = e.isShiftDown()
            ? scrollpane.getHorizontalScrollBar() : scrollpane.getVerticalScrollBar();
    int orientation = scrollbar.getOrientation();
    JViewport viewport = scrollpane.getViewport();
    if (viewport == null || !(viewport.getView() instanceof Scrollable)) {
        return;
    }
    Scrollable view = (Scrollable) viewport.getView();
    double rotation = e.getPreciseWheelRotation();
    /* Use (0, 0) view position to obtain constant unit increment (which might otherwise be
    variable on smaller-than-unit scrolling). */
    Rectangle r = new Rectangle(new Point(0, 0), viewport.getViewSize());
    int unitIncrement = view.getScrollableUnitIncrement(r, orientation, 1);
    double delta = rotation * e.getScrollAmount() * unitIncrement;
    boolean limitDelta = Math.abs(rotation) < 1.0d + EPSILON;
    int blockIncrement = view.getScrollableBlockIncrement(r, orientation, 1);
    double adjustedDelta = limitDelta
            ? Math.max(-(double) blockIncrement, Math.min(delta, (double) blockIncrement))
            : delta;
    int value = scrollbar.getValue();
    int newValue = Math.max(scrollbar.getMinimum(),
            Math.min((int) Math.round(value + adjustedDelta), scrollbar.getMaximum()));
    if (newValue != value) {
        scrollbar.setValue(newValue);
    }
}
Example 19
Source File: mxGraphOutline.java    From blog-codes with Apache License 2.0 4 votes vote down vote up 
public void mouseReleased(MouseEvent e)
{
	if (start != null)
	{
		if (zoomGesture)
		{
			double dx = e.getX() - start.getX();
			double w = finderBounds.getWidth();

			final JScrollBar hs = graphComponent
					.getHorizontalScrollBar();
			final double sx;

			if (hs != null)
			{
				sx = (double) hs.getValue() / hs.getMaximum();
			}
			else
			{
				sx = 0;
			}

			final JScrollBar vs = graphComponent.getVerticalScrollBar();
			final double sy;

			if (vs != null)
			{
				sy = (double) vs.getValue() / vs.getMaximum();
			}
			else
			{
				sy = 0;
			}

			mxGraphView view = graphComponent.getGraph().getView();
			double scale = view.getScale();
			double newScale = scale - (dx * scale) / w;
			double factor = newScale / scale;
			view.setScale(newScale);

			if (hs != null)
			{
				hs.setValue((int) (sx * hs.getMaximum() * factor));
			}

			if (vs != null)
			{
				vs.setValue((int) (sy * vs.getMaximum() * factor));
			}
		}

		zoomGesture = false;
		start = null;
	}
}
Example 20
Source File: FlatScrollPaneUI.java    From FlatLaf with Apache License 2.0 4 votes vote down vote up 
private void mouseWheelMovedSmooth( MouseWheelEvent e ) {
		// return if there is no viewport
		JViewport viewport = scrollpane.getViewport();
		if( viewport == null )
			return;

		// find scrollbar to scroll
		JScrollBar scrollbar = scrollpane.getVerticalScrollBar();
		if( scrollbar == null || !scrollbar.isVisible() || e.isShiftDown() ) {
			scrollbar = scrollpane.getHorizontalScrollBar();
			if( scrollbar == null || !scrollbar.isVisible() )
				return;
		}

		// consume event
		e.consume();

		// get precise wheel rotation
		double rotation = e.getPreciseWheelRotation();

		// get unit and block increment
		int unitIncrement;
		int blockIncrement;
		int orientation = scrollbar.getOrientation();
		Component view = viewport.getView();
		if( view instanceof Scrollable ) {
			Scrollable scrollable = (Scrollable) view;

			// Use (0, 0) view position to obtain constant unit increment of first item
			// (which might otherwise be variable on smaller-than-unit scrolling).
			Rectangle visibleRect = new Rectangle( viewport.getViewSize() );
			unitIncrement = scrollable.getScrollableUnitIncrement( visibleRect, orientation, 1 );
			blockIncrement = scrollable.getScrollableBlockIncrement( visibleRect, orientation, 1 );

			if( unitIncrement > 0 ) {
				// For the case that the first item (e.g. in a list) is larger
				// than the other items, get the unit increment of the second item
				// and use the smaller one.
				if( orientation == SwingConstants.VERTICAL ) {
					visibleRect.y += unitIncrement;
					visibleRect.height -= unitIncrement;
				} else {
					visibleRect.x += unitIncrement;
					visibleRect.width -= unitIncrement;
				}
				int unitIncrement2 = scrollable.getScrollableUnitIncrement( visibleRect, orientation, 1 );
				if( unitIncrement2 > 0 )
					unitIncrement = Math.min( unitIncrement, unitIncrement2 );
			}
		} else {
			int direction = rotation < 0 ? -1 : 1;
			unitIncrement = scrollbar.getUnitIncrement( direction );
			blockIncrement = scrollbar.getBlockIncrement( direction );
		}

		// limit scroll amount (number of units to scroll) for small viewports
		// (e.g. vertical scrolling in file chooser)
		int scrollAmount = e.getScrollAmount();
		int viewportWH = (orientation == SwingConstants.VERTICAL)
			? viewport.getHeight()
			: viewport.getWidth();
		if( unitIncrement * scrollAmount > viewportWH )
			scrollAmount = Math.max( viewportWH / unitIncrement, 1 );

		// compute relative delta
		double delta = rotation * scrollAmount * unitIncrement;
		boolean adjustDelta = Math.abs( rotation ) < (1.0 + EPSILON);
		double adjustedDelta = adjustDelta
			? Math.max( -blockIncrement, Math.min( delta, blockIncrement ) )
			: delta;

		// compute new value
		int value = scrollbar.getValue();
		double minDelta = scrollbar.getMinimum() - value;
		double maxDelta = scrollbar.getMaximum() - scrollbar.getModel().getExtent() - value;
		double boundedDelta = Math.max( minDelta, Math.min( adjustedDelta, maxDelta ) );
		int newValue = value + (int) Math.round( boundedDelta );

		// set new value
		if( newValue != value )
			scrollbar.setValue( newValue );

/*debug
		System.out.println( String.format( "%4d  %9f / %4d %4d / %12f %5s %12f / %4d %4d %4d / %12f %12f %12f / %4d",
			e.getWheelRotation(),
			e.getPreciseWheelRotation(),
			unitIncrement,
			blockIncrement,
			delta,
			adjustDelta,
			adjustedDelta,
			value,
			scrollbar.getMinimum(),
			scrollbar.getMaximum(),
			minDelta,
			maxDelta,
			boundedDelta,
			newValue ) );
*/
	}