Java JScrollBar.getValue方法代码示例

import javax.swing.JScrollBar; //导入方法依赖的package包/类
/**
 * Listens to changes of the scroll bar of the text are showing the EULA text, enables the check
 * box once the user scrolled to the end of the document.
 */
@Override
public void adjustmentValueChanged(AdjustmentEvent e) {
	JScrollBar scrollBar = this.scrollPane.getVerticalScrollBar();
	if (e.getSource() == scrollBar) {
		// the maximum value of the scroll bar assumes that the content is
		// not visible anymore, since this is not the case when scrolling
		// to the end of the document (the last part is still visible),
		// we have to include the visible amount in the comparison
		int currentValue = scrollBar.getValue() + scrollBar.getVisibleAmount();
		if (currentValue >= scrollBar.getMaximum()) {
			// the user scrolled to the end of the document
			this.acceptCheckBox.setEnabled(true);
			this.acceptCheckBox.requestFocusInWindow();
		}
	}
}
 

import javax.swing.JScrollBar; //导入方法依赖的package包/类
public void print(String string) {
	System.out.print(string);


	Document document = this.textArea.getDocument();
	final JScrollBar scrollBar = this.scrollPane.getVerticalScrollBar();

	boolean shouldScroll = (scrollBar.getValue() + scrollBar.getSize().getHeight() +
			MONOSPACED.getSize() * 2 > scrollBar.getMaximum());
	try {
		document.insertString(document.getLength(), string, null);
	} catch (BadLocationException ignored) {

	}

	if (shouldScroll) {
		SwingUtilities.invokeLater(new Runnable() {
			public void run() {
				scrollBar.setValue(2147483647);
			}
		});
	}
}
 

import javax.swing.JScrollBar; //导入方法依赖的package包/类
public void appendText(final String str) {
    if (!EventQueue.isDispatchThread()) {
        throw new IllegalStateException("Method must be called on EDT!");
    }

    final JScrollBar scrollBar;
    JScrollPane scrollPane = (JScrollPane) SwingUtilities.getAncestorOfClass(JScrollPane.class, this);
    if (scrollPane == null) {
        scrollBar = null;
    } else {
        JScrollBar sb = scrollPane.getHorizontalScrollBar();
        if (sb.getValue() + SCROLL_THRESHOLD >= sb.getMaximum()) {
            scrollBar = sb;
        } else {
            scrollBar = null;
        }
    }
    append(str);
    if (scrollBar != null) {
        scrollBar.setValue(scrollBar.getMaximum());
    }
}
 

import javax.swing.JScrollBar; //导入方法依赖的package包/类
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");
    }
}
 

import javax.swing.JScrollBar; //导入方法依赖的package包/类
/**
 * Not Implemented.
 */
public void rotate(int direction) {
	Dimension dim = getPreferredSize();
	Rectangle rect = getVisibleRect();
	if(dim.width>rect.width) rect.width = dim.width;
	if(dim.height>rect.height) rect.height = dim.height;
	if(proj instanceof CylindricalProjection ) return;
	rotation += (direction>0) ? 1:3;
	rotation &= 0x3;
	JScrollBar hsb = scrollPane.getHorizontalScrollBar();
	int x = hsb.getValue();
	JScrollBar vsb = scrollPane.getVerticalScrollBar();
	int y = vsb.getValue();
	if(direction>0) {
		hsb.setValue(dim.height - rect.height - y);
		vsb.setValue(x);
	} else {
		hsb.setValue(y);
		vsb.setValue(dim.width -rect.width - x);
	}
	revalidate();
	repaint();
}
 

import javax.swing.JScrollBar; //导入方法依赖的package包/类
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);
        }
    }
}
 

import javax.swing.JScrollBar; //导入方法依赖的package包/类
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();
    }
}
 

import javax.swing.JScrollBar; //导入方法依赖的package包/类
public void func_164247_a(final JTextArea p_164247_1_, final JScrollPane p_164247_2_, final String p_164247_3_)
{
    if (!SwingUtilities.isEventDispatchThread())
    {
        SwingUtilities.invokeLater(new Runnable()
        {
            public void run()
            {
                MinecraftServerGui.this.func_164247_a(p_164247_1_, p_164247_2_, p_164247_3_);
            }
        });
    }
    else
    {
        Document document = p_164247_1_.getDocument();
        JScrollBar jscrollbar = p_164247_2_.getVerticalScrollBar();
        boolean flag = false;

        if (p_164247_2_.getViewport().getView() == p_164247_1_)
        {
            flag = (double)jscrollbar.getValue() + jscrollbar.getSize().getHeight() + (double)(serverGuiFont.getSize() * 4) > (double)jscrollbar.getMaximum();
        }

        try
        {
            document.insertString(document.getLength(), p_164247_3_, (AttributeSet)null);
        }
        catch (BadLocationException var8)
        {
            ;
        }

        if (flag)
        {
            jscrollbar.setValue(Integer.MAX_VALUE);
        }
    }
}
 

import javax.swing.JScrollBar; //导入方法依赖的package包/类
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;
	}
}
 

import javax.swing.JScrollBar; //导入方法依赖的package包/类
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;
  }
}
 

import javax.swing.JScrollBar; //导入方法依赖的package包/类
public void appendLine(final JTextArea textArea, final JScrollPane scrollPane, final String line)
{
    try
    {
        latch.await();
    } catch (InterruptedException e){} //Prevent logging until after constructor has ended.
    if (!SwingUtilities.isEventDispatchThread())
    {
        SwingUtilities.invokeLater(new Runnable()
        {
            public void run()
            {
                MinecraftServerGui.this.appendLine(textArea, scrollPane, line);
            }
        });
    }
    else
    {
        Document document = textArea.getDocument();
        JScrollBar jscrollbar = scrollPane.getVerticalScrollBar();
        boolean flag = false;

        if (scrollPane.getViewport().getView() == textArea)
        {
            flag = (double)jscrollbar.getValue() + jscrollbar.getSize().getHeight() + (double)(SERVER_GUI_FONT.getSize() * 4) > (double)jscrollbar.getMaximum();
        }

        try
        {
            document.insertString(document.getLength(), line, (AttributeSet)null);
        }
        catch (BadLocationException var8)
        {
            ;
        }

        if (flag)
        {
            jscrollbar.setValue(Integer.MAX_VALUE);
        }
    }
}