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Diffstat (limited to 'src/macosx/classes/com/apple/laf/AquaComboBoxRendererInternal.java')
| -rw-r--r-- | src/macosx/classes/com/apple/laf/AquaComboBoxRendererInternal.java | 157 |
1 files changed, 157 insertions, 0 deletions
diff --git a/src/macosx/classes/com/apple/laf/AquaComboBoxRendererInternal.java b/src/macosx/classes/com/apple/laf/AquaComboBoxRendererInternal.java new file mode 100644 index 000000000..a93560a1f --- /dev/null +++ b/src/macosx/classes/com/apple/laf/AquaComboBoxRendererInternal.java @@ -0,0 +1,157 @@ +/* + * Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved. + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. + * + * This code is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 only, as + * published by the Free Software Foundation. Oracle designates this + * particular file as subject to the "Classpath" exception as provided + * by Oracle in the LICENSE file that accompanied this code. + * + * This code is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * version 2 for more details (a copy is included in the LICENSE file that + * accompanied this code). + * + * You should have received a copy of the GNU General Public License version + * 2 along with this work; if not, write to the Free Software Foundation, + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. + * + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA + * or visit www.oracle.com if you need additional information or have any + * questions. + */ + +package com.apple.laf; + +import sun.swing.SwingUtilities2; + +import javax.swing.*; +import java.awt.*; + +class AquaComboBoxRendererInternal extends JLabel implements ListCellRenderer { + final JComboBox fComboBox; + boolean fSelected; + boolean fChecked; + boolean fInList; + boolean fEditable; + boolean fDrawCheckedItem = true; + + // Provides space for a checkbox, and is translucent + public AquaComboBoxRendererInternal(final JComboBox comboBox) { + super(); + fComboBox = comboBox; + } + + // Don't include checkIcon space, because this is also used for button size calculations + // - the popup-size calc will get checkIcon space from getInsets + public Dimension getPreferredSize() { + // From BasicComboBoxRenderer - trick to avoid zero-height items + final Dimension size; + + final String text = getText(); + if ((text == null) || ("".equals(text))) { + setText(" "); + size = super.getPreferredSize(); + setText(""); + } else { + size = super.getPreferredSize(); + } + return size; + } + + // Don't paint the border here, it gets painted by the UI + protected void paintBorder(final Graphics g) { + + } + + public int getBaseline(int width, int height) { + return super.getBaseline(width, height) - 1; + } + + // Really means is the one with the mouse over it + public Component getListCellRendererComponent(final JList list, final Object value, int index, final boolean isSelected, final boolean cellHasFocus) { + fInList = (index >= 0); // When the button wants the item painted, it passes in -1 + fSelected = isSelected; + if (index < 0) { + index = fComboBox.getSelectedIndex(); + } + + // changed this to not ask for selected index but directly compare the current item and selected item + // different from basic because basic has no concept of checked, just has the last one selected, + // and the user changes selection. We have selection and a check mark. + // we used to call fComboBox.getSelectedIndex which ends up being a very bad call for large checkboxes + // it does a linear compare of every object in the checkbox until it finds the selected one, so if + // we have a 5000 element list we will 5000 * (selected index) .equals() of objects. + // See Radar #3141307 + + // Fix for Radar # 3204287 where we ask for an item at a negative index! + if (index >= 0) { + final Object item = fComboBox.getItemAt(index); + fChecked = fInList && item != null && item.equals(fComboBox.getSelectedItem()); + } else { + fChecked = false; + } + + fEditable = fComboBox.isEditable(); + if (isSelected) { + if (fEditable) { + setBackground(UIManager.getColor("List.selectionBackground")); + setForeground(UIManager.getColor("List.selectionForeground")); + } else { + setBackground(list.getSelectionBackground()); + setForeground(list.getSelectionForeground()); + } + } else { + if (fEditable) { + setBackground(UIManager.getColor("List.background")); + setForeground(UIManager.getColor("List.foreground")); + } else { + setBackground(list.getBackground()); + setForeground(list.getForeground()); + } + } + + setFont(list.getFont()); + + if (value instanceof Icon) { + setIcon((Icon)value); + } else { + setText((value == null) ? " " : value.toString()); + } + return this; + } + + public Insets getInsets(Insets insets) { + if (insets == null) insets = new Insets(0, 0, 0, 0); + insets.top = 1; + insets.bottom = 1; + insets.right = 5; + insets.left = (fInList && !fEditable ? 16 + 7 : 5); + return insets; + } + + protected void setDrawCheckedItem(final boolean drawCheckedItem) { + this.fDrawCheckedItem = drawCheckedItem; + } + + // Paint this component, and a checkbox if it's the selected item and not in the button + protected void paintComponent(final Graphics g) { + if (fInList) { + if (fSelected && !fEditable) { + AquaMenuPainter.instance().paintSelectedMenuItemBackground(g, getWidth(), getHeight()); + } else { + g.setColor(getBackground()); + g.fillRect(0, 0, getWidth(), getHeight()); + } + + if (fChecked && !fEditable && fDrawCheckedItem) { + final int y = getHeight() - 4; + g.setColor(getForeground()); + SwingUtilities2.drawString(fComboBox, g, "\u2713", 6, y); + } + } + super.paintComponent(g); + } +} |