1 /*

     2  * Copyright (c) 2000, 2015, Oracle and/or its affiliates. All rights reserved.

     3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

     4  *

     5  * This code is free software; you can redistribute it and/or modify it

     6  * under the terms of the GNU General Public License version 2 only, as

     7  * published by the Free Software Foundation.  Oracle designates this

     8  * particular file as subject to the "Classpath" exception as provided

     9  * by Oracle in the LICENSE file that accompanied this code.

    10  *

    11  * This code is distributed in the hope that it will be useful, but WITHOUT

    12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

    13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

    14  * version 2 for more details (a copy is included in the LICENSE file that

    15  * accompanied this code).

    16  *

    17  * You should have received a copy of the GNU General Public License version

    18  * 2 along with this work; if not, write to the Free Software Foundation,

    19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

    20  *

    21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

    22  * or visit www.oracle.com if you need additional information or have any

    23  * questions.

    24  */

    25 

    26 package com.sun.java.swing.plaf.windows;

    27 

    28 import sun.swing.SwingUtilities2;

    29 

    30 import java.awt.*;

    31 

    32 import javax.swing.*;

    33 import javax.swing.plaf.UIResource;

    34 

    35 import static com.sun.java.swing.plaf.windows.TMSchema.*;

    36 

    37 /**

    38  * A collection of static utility methods used for rendering the Windows look

    39  * and feel.

    40  *

    41  * @author Mark Davidson

    42  * @since 1.4

    43  */

    44 public class WindowsGraphicsUtils {

    45 

    46     /**

    47      * Renders a text String in Windows without the mnemonic.

    48      * This is here because the WindowsUI hierarchy doesn't match the Component hierarchy. All

    49      * the overriden paintText methods of the ButtonUI delegates will call this static method.

    50      *

    51      * @param g Graphics context

    52      * @param b Current button to render

    53      * @param textRect Bounding rectangle to render the text.

    54      * @param text String to render

    55      */

    56     public static void paintText(Graphics g, AbstractButton b,

    57                                         Rectangle textRect, String text,

    58                                         int textShiftOffset) {

    59         FontMetrics fm = SwingUtilities2.getFontMetrics(b, g);

    60 

    61         int mnemIndex = b.getDisplayedMnemonicIndex();

    62         // W2K Feature: Check to see if the Underscore should be rendered.

    63         if (WindowsLookAndFeel.isMnemonicHidden() == true) {

    64             mnemIndex = -1;

    65         }

    66 

    67         XPStyle xp = XPStyle.getXP();

    68         if (xp != null && !(b instanceof JMenuItem)) {

    69             paintXPText(b, g, textRect.x + textShiftOffset,

    70                     textRect.y + fm.getAscent() + textShiftOffset,

    71                     text, mnemIndex);

    72         } else {

    73             paintClassicText(b, g, textRect.x + textShiftOffset,

    74                     textRect.y + fm.getAscent() + textShiftOffset,

    75                     text, mnemIndex);

    76         }

    77     }

    78 

    79     static void paintClassicText(AbstractButton b, Graphics g, int x, int y,

    80                                  String text, int mnemIndex) {

    81         ButtonModel model = b.getModel();

    82 

    83         /* Draw the Text */

    84         Color color = b.getForeground();

    85         if(model.isEnabled()) {

    86             /*** paint the text normally */

    87             if(!(b instanceof JMenuItem && model.isArmed())

    88                 && !(b instanceof JMenu && (model.isSelected() || model.isRollover()))) {

    89                 /* We shall not set foreground color for selected menu or

    90                  * armed menuitem. Foreground must be set in appropriate

    91                  * Windows* class because these colors passes from

    92                  * BasicMenuItemUI as protected fields and we can't

    93                  * reach them from this class */

    94                 g.setColor(b.getForeground());

    95             }

    96             SwingUtilities2.drawStringUnderlineCharAt(b, g,text, mnemIndex, x, y);

    97         } else {        /*** paint the text disabled ***/

    98             color = getDisabledTextColor(b);

    99             if (color == null) {

   100                 color = UIManager.getColor("Button.shadow");

   101             }

   102             Color shadow = UIManager.getColor("Button.disabledShadow");

   103             if(model.isArmed()) {

   104                 color = UIManager.getColor("Button.disabledForeground");

   105             } else {

   106                 if (shadow == null) {

   107                     shadow = b.getBackground().darker();

   108                 }

   109                 g.setColor(shadow);

   110                 SwingUtilities2.drawStringUnderlineCharAt(b, g, text, mnemIndex,

   111                                                           x + 1, y + 1);

   112             }

   113             if (color == null) {

   114                 color = b.getBackground().brighter();

   115             }

   116             g.setColor(color);

   117             SwingUtilities2.drawStringUnderlineCharAt(b, g, text, mnemIndex, x, y);

   118         }

   119     }

   120 

   121     private static Color getDisabledTextColor(AbstractButton b) {

   122         if (b instanceof JCheckBox) {

   123             return UIManager.getColor("CheckBox.disabledText");

   124         } else if (b instanceof JRadioButton) {

   125             return UIManager.getColor("RadioButton.disabledText");

   126         } else if (b instanceof JToggleButton) {

   127             return  UIManager.getColor("ToggleButton.disabledText");

   128         } else if (b instanceof JButton) {

   129             return UIManager.getColor("Button.disabledText");

   130         }

   131         return null;

   132     }

   133 

   134     static void paintXPText(AbstractButton b, Graphics g, int x, int y,

   135                             String text, int mnemIndex) {

   136         Part part = WindowsButtonUI.getXPButtonType(b);

   137         State state = WindowsButtonUI.getXPButtonState(b);

   138         paintXPText(b, part, state, g, x, y, text, mnemIndex);

   139     }

   140 

   141     static void paintXPText(AbstractButton b, Part part, State state,

   142             Graphics g, int x, int y, String text, int mnemIndex) {

   143         XPStyle xp = XPStyle.getXP();

   144         if (xp == null) {

   145             return;

   146         }

   147         Color textColor;

   148         if (b.isEnabled()) {

   149             textColor = b.getForeground();

   150         }

   151         else {

   152             textColor = getDisabledTextColor(b);

   153         }

   154 

   155         if (textColor == null || textColor instanceof UIResource) {

   156             textColor = xp.getColor(b, part, state, Prop.TEXTCOLOR, b.getForeground());

   157             // to work around an apparent bug in Windows, use the pushbutton

   158             // color for disabled toolbar buttons if the disabled color is the

   159             // same as the enabled color

   160             if (part == Part.TP_BUTTON && state == State.DISABLED) {

   161                 Color enabledColor = xp.getColor(b, part, State.NORMAL,

   162                                      Prop.TEXTCOLOR, b.getForeground());

   163                 if(textColor.equals(enabledColor)) {

   164                     textColor = xp.getColor(b, Part.BP_PUSHBUTTON, state,

   165                                 Prop.TEXTCOLOR, textColor);

   166                 }

   167             }

   168             // only draw shadow if developer hasn't changed the foreground color

   169             // and if the current style has text shadows.

   170             TypeEnum shadowType = xp.getTypeEnum(b, part,

   171                                                  state, Prop.TEXTSHADOWTYPE);

   172             if (shadowType == TypeEnum.TST_SINGLE ||

   173                         shadowType == TypeEnum.TST_CONTINUOUS) {

   174                 Color shadowColor = xp.getColor(b, part, state,

   175                                                 Prop.TEXTSHADOWCOLOR, Color.black);

   176                 Point offset = xp.getPoint(b, part, state, Prop.TEXTSHADOWOFFSET);

   177                 if (offset != null) {

   178                     g.setColor(shadowColor);

   179                     SwingUtilities2.drawStringUnderlineCharAt(b, g, text, mnemIndex,

   180                                                               x + offset.x,

   181                                                               y + offset.y);

   182                 }

   183             }

   184         }

   185 

   186         g.setColor(textColor);

   187         SwingUtilities2.drawStringUnderlineCharAt(b, g, text, mnemIndex, x, y);

   188     }

   189 

   190     static boolean isLeftToRight(Component c) {

   191         return c.getComponentOrientation().isLeftToRight();

   192     }

   193 

   194     /*

   195      * Repaints all the components with the mnemonics in the given window and

   196      * all its owned windows.

   197      */

   198     static void repaintMnemonicsInWindow(Window w) {

   199         if(w == null || !w.isShowing()) {

   200             return;

   201         }

   202 

   203         Window[] ownedWindows = w.getOwnedWindows();

   204         for(int i=0;i<ownedWindows.length;i++) {

   205             repaintMnemonicsInWindow(ownedWindows[i]);

   206         }

   207 

   208         repaintMnemonicsInContainer(w);

   209     }

   210 

   211     /*

   212      * Repaints all the components with the mnemonics in container.

   213      * Recursively searches for all the subcomponents.

   214      */

   215     static void repaintMnemonicsInContainer(Container cont) {

   216         Component c;

   217         for(int i=0; i<cont.getComponentCount(); i++) {

   218             c = cont.getComponent(i);

   219             if(c == null || !c.isVisible()) {

   220                 continue;

   221             }

   222             if(c instanceof AbstractButton

   223                && ((AbstractButton)c).getMnemonic() != '\0') {

   224                 c.repaint();

   225                 continue;

   226             } else if(c instanceof JLabel

   227                       && ((JLabel)c).getDisplayedMnemonic() != '\0') {

   228                 c.repaint();

   229                 continue;

   230             }

   231             if(c instanceof Container) {

   232                 repaintMnemonicsInContainer((Container)c);

   233             }

   234         }

   235     }

   236 }