示例#1
0
 /**
  * If necessary paints the background of the component, then invokes <code>paint</code>.
  *
  * @param g Graphics to paint to
  * @param c JComponent painting on
  * @throws NullPointerException if <code>g</code> or <code>c</code> is null
  * @see javax.swing.plaf.ComponentUI#update
  * @see javax.swing.plaf.ComponentUI#paint
  * @since 1.5
  */
 public void update(Graphics g, JComponent c) {
   AbstractButton button = (AbstractButton) c;
   if ((c.getBackground() instanceof UIResource)
       && button.isContentAreaFilled()
       && c.isEnabled()) {
     ButtonModel model = button.getModel();
     if (!MetalUtils.isToolBarButton(c)) {
       if (!model.isArmed()
           && !model.isPressed()
           && MetalUtils.drawGradient(
               c, g, "Button.gradient", 0, 0, c.getWidth(), c.getHeight(), true)) {
         paint(g, c);
         return;
       }
     } else if (model.isRollover()
         && MetalUtils.drawGradient(
             c, g, "Button.gradient", 0, 0, c.getWidth(), c.getHeight(), true)) {
       paint(g, c);
       return;
     }
   }
   super.update(g, c);
 }
  /**
   * This method is not being used to paint menu item since 6.0 This code left for compatibility
   * only. Do not use or override it, this will not cause any visible effect.
   */
  public static void paintMenuItem(
      Graphics g,
      JComponent c,
      Icon checkIcon,
      Icon arrowIcon,
      Color background,
      Color foreground,
      int defaultTextIconGap) {

    JMenuItem b = (JMenuItem) c;
    ButtonModel model = b.getModel();

    Dimension size = b.getSize();
    Insets i = c.getInsets();

    Rectangle viewRect = new Rectangle(size);

    viewRect.x += i.left;
    viewRect.y += i.top;
    viewRect.width -= (i.right + viewRect.x);
    viewRect.height -= (i.bottom + viewRect.y);

    Rectangle iconRect = new Rectangle();
    Rectangle textRect = new Rectangle();
    Rectangle acceleratorRect = new Rectangle();
    Rectangle checkRect = new Rectangle();
    Rectangle arrowRect = new Rectangle();

    Font holdf = g.getFont();
    Font f = c.getFont();
    g.setFont(f);
    FontMetrics fm = SwingUtilities2.getFontMetrics(c, g, f);
    FontMetrics fmAccel =
        SwingUtilities2.getFontMetrics(c, g, UIManager.getFont("MenuItem.acceleratorFont"));

    if (c.isOpaque()) {
      if (model.isArmed() || (c instanceof JMenu && model.isSelected())) {
        g.setColor(background);
      } else {
        g.setColor(c.getBackground());
      }
      g.fillRect(0, 0, size.width, size.height);
    }

    // get Accelerator text
    KeyStroke accelerator = b.getAccelerator();
    String acceleratorText = "";
    if (accelerator != null) {
      int modifiers = accelerator.getModifiers();
      if (modifiers > 0) {
        acceleratorText = KeyEvent.getKeyModifiersText(modifiers);
        acceleratorText += "+";
      }
      acceleratorText += KeyEvent.getKeyText(accelerator.getKeyCode());
    }

    // layout the text and icon
    String text =
        layoutMenuItem(
            c,
            fm,
            b.getText(),
            fmAccel,
            acceleratorText,
            b.getIcon(),
            checkIcon,
            arrowIcon,
            b.getVerticalAlignment(),
            b.getHorizontalAlignment(),
            b.getVerticalTextPosition(),
            b.getHorizontalTextPosition(),
            viewRect,
            iconRect,
            textRect,
            acceleratorRect,
            checkRect,
            arrowRect,
            b.getText() == null ? 0 : defaultTextIconGap,
            defaultTextIconGap);

    // Paint the Check
    Color holdc = g.getColor();
    if (checkIcon != null) {
      if (model.isArmed() || (c instanceof JMenu && model.isSelected())) g.setColor(foreground);
      checkIcon.paintIcon(c, g, checkRect.x, checkRect.y);
      g.setColor(holdc);
    }

    // Paint the Icon
    if (b.getIcon() != null) {
      Icon icon;
      if (!model.isEnabled()) {
        icon = (Icon) b.getDisabledIcon();
      } else if (model.isPressed() && model.isArmed()) {
        icon = (Icon) b.getPressedIcon();
        if (icon == null) {
          // Use default icon
          icon = (Icon) b.getIcon();
        }
      } else {
        icon = (Icon) b.getIcon();
      }

      if (icon != null) {
        icon.paintIcon(c, g, iconRect.x, iconRect.y);
      }
    }

    // Draw the Text
    if (text != null && !text.equals("")) {
      // Once BasicHTML becomes public, use BasicHTML.propertyKey
      // instead of the hardcoded string below!
      View v = (View) c.getClientProperty("html");
      if (v != null) {
        v.paint(g, textRect);
      } else {
        int mnemIndex = b.getDisplayedMnemonicIndex();

        if (!model.isEnabled()) {
          // *** paint the text disabled
          g.setColor(b.getBackground().brighter());
          SwingUtilities2.drawStringUnderlineCharAt(
              b, g, text, mnemIndex, textRect.x, textRect.y + fmAccel.getAscent());
          g.setColor(b.getBackground().darker());
          SwingUtilities2.drawStringUnderlineCharAt(
              b, g, text, mnemIndex, textRect.x - 1, textRect.y + fmAccel.getAscent() - 1);

        } else {
          // *** paint the text normally
          if (model.isArmed() || (c instanceof JMenu && model.isSelected())) {
            g.setColor(foreground);
          } else {
            g.setColor(b.getForeground());
          }
          SwingUtilities2.drawStringUnderlineCharAt(
              b, g, text, mnemIndex, textRect.x, textRect.y + fm.getAscent());
        }
      }
    }

    // Draw the Accelerator Text
    if (acceleratorText != null && !acceleratorText.equals("")) {

      // Get the maxAccWidth from the parent to calculate the offset.
      int accOffset = 0;
      Container parent = b.getParent();
      if (parent != null && parent instanceof JComponent) {
        JComponent p = (JComponent) parent;
        Integer maxValueInt = (Integer) p.getClientProperty(MotifGraphicsUtils.MAX_ACC_WIDTH);
        int maxValue = maxValueInt != null ? maxValueInt.intValue() : acceleratorRect.width;

        // Calculate the offset, with which the accelerator texts will be drawn with.
        accOffset = maxValue - acceleratorRect.width;
      }

      g.setFont(UIManager.getFont("MenuItem.acceleratorFont"));
      if (!model.isEnabled()) {
        // *** paint the acceleratorText disabled
        g.setColor(b.getBackground().brighter());
        SwingUtilities2.drawString(
            c,
            g,
            acceleratorText,
            acceleratorRect.x - accOffset,
            acceleratorRect.y + fm.getAscent());
        g.setColor(b.getBackground().darker());
        SwingUtilities2.drawString(
            c,
            g,
            acceleratorText,
            acceleratorRect.x - accOffset - 1,
            acceleratorRect.y + fm.getAscent() - 1);
      } else {
        // *** paint the acceleratorText normally
        if (model.isArmed() || (c instanceof JMenu && model.isSelected())) {
          g.setColor(foreground);
        } else {
          g.setColor(b.getForeground());
        }
        SwingUtilities2.drawString(
            c,
            g,
            acceleratorText,
            acceleratorRect.x - accOffset,
            acceleratorRect.y + fmAccel.getAscent());
      }
    }

    // Paint the Arrow
    if (arrowIcon != null) {
      if (model.isArmed() || (c instanceof JMenu && model.isSelected())) g.setColor(foreground);
      if (!(b.getParent() instanceof JMenuBar)) arrowIcon.paintIcon(c, g, arrowRect.x, arrowRect.y);
    }

    g.setColor(holdc);
    g.setFont(holdf);
  }