javax.swing.JViewport#getExtentSize ( )源码实例Demo

下面列出了javax.swing.JViewport#getExtentSize ( ) 实例代码，或者点击链接到github查看源代码，也可以在右侧发表评论。

源代码1 项目： CQL 文件： GuiUtil.java

public static void centerLineInScrollPane(JTextComponent component) {
	Container container = SwingUtilities.getAncestorOfClass(JViewport.class, component);

	if (container == null)
		return;

	try {
		Rectangle r = component.modelToView(component.getCaretPosition());
		// Rectangle2D r = component.modelToView2D(component.getCaretPosition());
		JViewport viewport = (JViewport) container;
		if (r == null) { // || viewport == null) {
			return;
		}
		int extentHeight = viewport.getExtentSize().height;
		int viewHeight = viewport.getViewSize().height;

		int y = Math.max(0, r.y - ((extentHeight - r.height) / 2));
		// double y = Math.max(0, r.getY() - ((extentHeight - r.getHeight()) / 2));
		y = Math.min(y, viewHeight - extentHeight);

		viewport.setViewPosition(new Point(0, y));
		// viewport.setViewPosition(new Point(0, (int) y));
	} catch (BadLocationException ble) {
	}
}

源代码2 项目： dragonwell8_jdk 文件： Test6526631.java

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");
    }
}

源代码3 项目： TencentKona-8 文件： Test6526631.java

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");
    }
}

源代码4 项目： jdk8u-dev-jdk 文件： Test6526631.java

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");
    }
}

源代码5 项目： openjdk-jdk8u 文件： Test6526631.java

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");
    }
}

源代码6 项目： netbeans 文件： Utilities.java

private void changed() {
    JViewport viewport = sp.getViewport();
    Point viewPosition = viewport.getViewPosition();
    if (viewPosition.x > 0) {
        try {
            Rectangle textRect = editorPane.getUI().modelToView(editorPane, editorPane.getDocument().getLength());
            int textLength = textRect.x + textRect.width;
            int viewLength = viewport.getExtentSize().width;
            //System.out.println("Utilities.createSingleLineEditor(): spLength = "+sp.getSize().width+", viewLength = "+viewLength+", textLength = "+textLength+", viewPosition = "+viewPosition);
            if (textLength < (viewPosition.x + viewLength)) {
                viewPosition.x = Math.max(textLength - viewLength, 0);
                viewport.setViewPosition(viewPosition);
                //System.out.println("Utilities.createSingleLineEditor(): setting new view position = "+viewPosition);
            }
        } catch (BadLocationException blex) {
            Exceptions.printStackTrace(blex);
        }
    }
}

源代码7 项目： netbeans 文件： ComponentPeer.java

private int[] computeVisibleSpan() {
    Component parent = pane.getParent();
    
    if (parent instanceof JLayeredPane) {
        parent = parent.getParent();
    }

    if (parent instanceof JViewport) {
        JViewport vp = (JViewport) parent;

        Point start = vp.getViewPosition();
        Dimension size = vp.getExtentSize();
        Point end = new Point((int) (start.getX() + size.getWidth()), (int) (start.getY() + size.getHeight()));

        int startPosition = pane.viewToModel(start);
        int endPosition = pane.viewToModel(end);

        if (parentWithListener != vp) {
            vp.addChangeListener(WeakListeners.change(this, vp));
            parentWithListener = vp;
        }
        return new int[] {startPosition, endPosition};
    }

    return new int[] {0, pane.getDocument().getLength()};
}

源代码8 项目： jdk8u-jdk 文件： Test6526631.java

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");
    }
}

源代码9 项目： openjdk-jdk9 文件： Test6526631.java

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");
    }
}

源代码10 项目： jdk8u-jdk 文件： Test6526631.java

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");
    }
}

源代码11 项目： openjdk-8-source 文件： Test6526631.java

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");
    }
}

源代码12 项目： openjdk-8 文件： Test6526631.java

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");
    }
}

源代码13 项目： jdk8u_jdk 文件： Test6526631.java

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");
    }
}

源代码14 项目： netbeans 文件： AutoscrollSupport.java

/** Performs autoscroll operation.
*/
public void autoscroll(Point cursorLoc) {
    JViewport viewport = getViewport();

    if (viewport == null) {
        return;
    }

    Point viewPos = viewport.getViewPosition();
    int viewHeight = viewport.getExtentSize().height;
    int viewWidth = viewport.getExtentSize().width;

    // perform scrolling
    if ((cursorLoc.y - viewPos.y) < insets.top) {
        // scroll up
        viewport.setViewPosition(new Point(viewPos.x, Math.max(viewPos.y - scrollUnits.top, 0)));
    } else if (((viewPos.y + viewHeight) - cursorLoc.y) < insets.bottom) {
        // scroll down
        viewport.setViewPosition(
            new Point(viewPos.x, Math.min(viewPos.y + scrollUnits.bottom, comp.getHeight() - viewHeight))
        );
    } else if ((cursorLoc.x - viewPos.x) < insets.left) {
        // scroll left
        viewport.setViewPosition(new Point(Math.max(viewPos.x - scrollUnits.left, 0), viewPos.y));
    } else if (((viewPos.x + viewWidth) - cursorLoc.x) < insets.right) {
        // scroll right
        viewport.setViewPosition(
            new Point(Math.min(viewPos.x + scrollUnits.right, comp.getWidth() - viewWidth), viewPos.y)
        );
    }
}

源代码15 项目： seaglass 文件： SeaGlassScrollPaneUI.java

private void sbPropertyChange(PropertyChangeEvent e) {
    String propertyName = e.getPropertyName();
    Object source = e.getSource();

    if ("model" == propertyName) {
        JScrollBar sb = scrollpane.getVerticalScrollBar();
        BoundedRangeModel oldModel = (BoundedRangeModel) e.getOldValue();
        ChangeListener cl = null;

        if (source == sb) {
            cl = vsbChangeListener;
        } else if (source == scrollpane.getHorizontalScrollBar()) {
            sb = scrollpane.getHorizontalScrollBar();
            cl = hsbChangeListener;
        }
        if (cl != null) {
            if (oldModel != null) {
                oldModel.removeChangeListener(cl);
            }
            if (sb.getModel() != null) {
                sb.getModel().addChangeListener(cl);
            }
        }
    } else if ("componentOrientation" == propertyName) {
        if (source == scrollpane.getHorizontalScrollBar()) {
            JScrollBar hsb = scrollpane.getHorizontalScrollBar();
            JViewport viewport = scrollpane.getViewport();
            Point p = viewport.getViewPosition();
            if (scrollpane.getComponentOrientation().isLeftToRight()) {
                p.x = hsb.getValue();
            } else {
                p.x = viewport.getViewSize().width - viewport.getExtentSize().width - hsb.getValue();
            }
            viewport.setViewPosition(p);
        }
    }
}

源代码16 项目： netbeans 文件： AutoscrollSupport.java

/** Performs autoscroll operation.
*/
public void autoscroll(Point cursorLoc) {
    JViewport viewport = getViewport();

    if (viewport == null) {
        return;
    }

    Point viewPos = viewport.getViewPosition();
    int viewHeight = viewport.getExtentSize().height;
    int viewWidth = viewport.getExtentSize().width;

    // perform scrolling
    if ((cursorLoc.y - viewPos.y) < insets.top) {
        // scroll up
        viewport.setViewPosition(new Point(viewPos.x, Math.max(viewPos.y - scrollUnits.top, 0)));
    } else if (((viewPos.y + viewHeight) - cursorLoc.y) < insets.bottom) {
        // scroll down
        viewport.setViewPosition(
            new Point(viewPos.x, Math.min(viewPos.y + scrollUnits.bottom, comp.getHeight() - viewHeight))
        );
    } else if ((cursorLoc.x - viewPos.x) < insets.left) {
        // scroll left
        viewport.setViewPosition(new Point(Math.max(viewPos.x - scrollUnits.left, 0), viewPos.y));
    } else if (((viewPos.x + viewWidth) - cursorLoc.x) < insets.right) {
        // scroll right
        viewport.setViewPosition(
            new Point(Math.min(viewPos.x + scrollUnits.right, comp.getWidth() - viewWidth), viewPos.y)
        );
    }
}

源代码17 项目： netbeans 文件： DebuggingViewComponent.java

private void adjustTreeScrollBar(int treeViewWidth) {
    DebugTreeView tView = getTreeView();
    if (tView == null) {
        scrollBarPanel.setVisible(false);
        return;
    }
    JViewport viewport = tView.getViewport();
    Point point = viewport.getViewPosition();
    if (point.y < 0) {
        viewport.setViewPosition(new Point(point.x, 0));
    }
    Dimension viewSize = viewport.getExtentSize();
    Dimension treeSize = viewport.getViewSize();
    if (treeViewWidth < 0) {
        treeViewWidth = treeSize.width;
    }
    int unitHeight = tView.getUnitHeight();
    if (unitHeight > 0) {
        JScrollBar sbar = mainScrollPane.getVerticalScrollBar();
        if (sbar.getUnitIncrement() != unitHeight) {
            sbar.setUnitIncrement(unitHeight);
        }
    }
    if (treeViewWidth <= viewSize.width) {
        scrollBarPanel.setVisible(false);
    } else {
        treeScrollBar.setMaximum(treeViewWidth);
        treeScrollBar.setVisibleAmount(viewSize.width);
        if (unitHeight > 0) {
            treeScrollBar.setUnitIncrement(unitHeight / 2);
        }
        treeScrollBar.setBlockIncrement(viewSize.width);
        scrollBarPanel.setVisible(true);
    } // else
}

源代码18 项目： niftyeditor 文件： J2DNiftyView.java

@Override
public void stateChanged(ChangeEvent e) {
   JViewport temp = (JViewport) e.getSource();
   int h = temp.getExtentSize().height > this.graphWrap.h ? this.graphWrap.h : temp.getExtentSize().height; 
   int w = temp.getExtentSize().width > this.graphWrap.w ? this.graphWrap.w : temp.getExtentSize().width;
   this.clipView.setBounds(temp.getViewPosition().x, temp.getViewPosition().y, w, h);
}

源代码19 项目： netbeans-mmd-plugin 文件： MMDEditor.java

@Override
public void onScaledByMouse(
        @Nonnull final MindMapPanel source,
        @Nonnull final Point mousePoint,
        final double oldScale,
        final double newScale,
        @Nonnull final Dimension oldSize,
        @Nonnull final Dimension newSize
) {
  if (Double.compare(oldScale, newScale) != 0) {
    this.scrollPane.setViewportView(source);
    final JViewport viewport = this.scrollPane.getViewport();

    final Rectangle viewPos = viewport.getViewRect();

    final Dimension size = source.getSize();
    final Dimension extentSize = viewport.getExtentSize();

    if (extentSize.width < size.width || extentSize.height < size.height) {

      final int dx = mousePoint.x - viewPos.x;
      final int dy = mousePoint.y - viewPos.y;

      final double scaleX = newSize.getWidth() / oldSize.getWidth();
      final double scaleY = newSize.getHeight() / oldSize.getHeight();

      final int newMouseX = (int) (Math.round(mousePoint.x * scaleX));
      final int newMouseY = (int) (Math.round(mousePoint.y * scaleY));

      viewPos.x = Math.max(0, newMouseX - dx);
      viewPos.y = Math.max(0, newMouseY - dy);
      viewport.setView(source);

      source.scrollRectToVisible(viewPos);
    } else {
      viewPos.x = 0;
      viewPos.y = 0;
      source.scrollRectToVisible(viewPos);
    }
    this.scrollPane.repaint();
  }
}

源代码20 项目： netbeans-mmd-plugin 文件： MindMapDocumentEditor.java

@Override
public void onScaledByMouse(
    @Nonnull final MindMapPanel source,
    @Nonnull final Point mousePoint,
    final double oldScale,
    final double newScale,
    @Nonnull final Dimension oldSize,
    @Nonnull final Dimension newSize
) {
  if (Double.compare(oldScale, newScale) != 0) {
    this.mainScrollPane.setViewportView(source);

    final JViewport viewport = this.mainScrollPane.getViewport();

    final Rectangle viewPos = viewport.getViewRect();

    final Dimension size = source.getSize();
    final Dimension extentSize = viewport.getExtentSize();

    if (extentSize.width < size.width || extentSize.height < size.height) {

      final int dx = mousePoint.x - viewPos.x;
      final int dy = mousePoint.y - viewPos.y;

      final double scaleX = newSize.getWidth() / oldSize.getWidth();
      final double scaleY = newSize.getHeight() / oldSize.getHeight();

      final int newMouseX = (int) (Math.round(mousePoint.x * scaleX));
      final int newMouseY = (int) (Math.round(mousePoint.y * scaleY));

      viewPos.x = Math.max(0, newMouseX - dx);
      viewPos.y = Math.max(0, newMouseY - dy);

      source.scrollRectToVisible(viewPos);
    } else {
      viewPos.x = 0;
      viewPos.y = 0;
      source.scrollRectToVisible(viewPos);
    }

    this.mainScrollPane.repaint();
  }
}

方法所在类

javax.swing.JViewport