X-Git-Url: http://git.nikiroo.be/?a=blobdiff_plain;f=src%2Fjexer%2FTCheckBox.java;fp=src%2Fjexer%2FTCheckBox.java;h=1f9a351c0c0c636c538272d372c5a3b4ef43f583;hb=12b90437b5f22c2ae6e9b9b14c3b62b60f6143e5;hp=0000000000000000000000000000000000000000;hpb=b709b36e17eb8807819e51297bb398ef28ece52d;p=fanfix.git

diff --git a/src/jexer/TCheckBox.java b/src/jexer/TCheckBox.java
new file mode 100644
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--- /dev/null
+++ b/src/jexer/TCheckBox.java
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+/*
+ * Jexer - Java Text User Interface
+ *
+ * The MIT License (MIT)
+ *
+ * Copyright (C) 2019 Kevin Lamonte
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ *
+ * @author Kevin Lamonte [kevin.lamonte@gmail.com]
+ * @version 1
+ */
+package jexer;
+
+import static jexer.TKeypress.kbEnter;
+import static jexer.TKeypress.kbEsc;
+import static jexer.TKeypress.kbSpace;
+import jexer.bits.CellAttributes;
+import jexer.bits.GraphicsChars;
+import jexer.bits.MnemonicString;
+import jexer.bits.StringUtils;
+import jexer.event.TKeypressEvent;
+import jexer.event.TMouseEvent;
+
+/**
+ * TCheckBox implements an on/off checkbox.
+ */
+public class TCheckBox extends TWidget {
+
+    // ------------------------------------------------------------------------
+    // Variables --------------------------------------------------------------
+    // ------------------------------------------------------------------------
+
+    /**
+     * CheckBox state, true means checked.
+     */
+    private boolean checked = false;
+
+    /**
+     * The shortcut and checkbox label.
+     */
+    private MnemonicString mnemonic;
+
+    /**
+     * If true, use the window's background color.
+     */
+    private boolean useWindowBackground = false;
+
+    // ------------------------------------------------------------------------
+    // Constructors -----------------------------------------------------------
+    // ------------------------------------------------------------------------
+
+    /**
+     * Public constructor.
+     *
+     * @param parent parent widget
+     * @param x column relative to parent
+     * @param y row relative to parent
+     * @param label label to display next to (right of) the checkbox
+     * @param checked initial check state
+     */
+    public TCheckBox(final TWidget parent, final int x, final int y,
+        final String label, final boolean checked) {
+
+        // Set parent and window
+        super(parent, x, y, StringUtils.width(label) + 4, 1);
+
+        mnemonic = new MnemonicString(label);
+        this.checked = checked;
+
+        setCursorVisible(true);
+        setCursorX(1);
+    }
+
+    // ------------------------------------------------------------------------
+    // Event handlers ---------------------------------------------------------
+    // ------------------------------------------------------------------------
+
+    /**
+     * Returns true if the mouse is currently on the checkbox.
+     *
+     * @param mouse mouse event
+     * @return true if the mouse is currently on the checkbox
+     */
+    private boolean mouseOnCheckBox(final TMouseEvent mouse) {
+        if ((mouse.getY() == 0)
+            && (mouse.getX() >= 0)
+            && (mouse.getX() <= 2)
+        ) {
+            return true;
+        }
+        return false;
+    }
+
+    /**
+     * Handle mouse checkbox presses.
+     *
+     * @param mouse mouse button down event
+     */
+    @Override
+    public void onMouseDown(final TMouseEvent mouse) {
+        if ((mouseOnCheckBox(mouse)) && (mouse.isMouse1())) {
+            // Switch state
+            checked = !checked;
+        }
+    }
+
+    /**
+     * Handle keystrokes.
+     *
+     * @param keypress keystroke event
+     */
+    @Override
+    public void onKeypress(final TKeypressEvent keypress) {
+        if (keypress.equals(kbSpace)
+            || keypress.equals(kbEnter)
+        ) {
+            checked = !checked;
+            return;
+        }
+
+        if (keypress.equals(kbEsc)) {
+            checked = false;
+            return;
+        }
+
+        // Pass to parent for the things we don't care about.
+        super.onKeypress(keypress);
+    }
+
+    // ------------------------------------------------------------------------
+    // TWidget ----------------------------------------------------------------
+    // ------------------------------------------------------------------------
+
+    /**
+     * Draw a checkbox with label.
+     */
+    @Override
+    public void draw() {
+        CellAttributes checkboxColor;
+        CellAttributes mnemonicColor;
+
+        if (isAbsoluteActive()) {
+            checkboxColor = getTheme().getColor("tcheckbox.active");
+            mnemonicColor = getTheme().getColor("tcheckbox.mnemonic.highlighted");
+        } else {
+            checkboxColor = getTheme().getColor("tcheckbox.inactive");
+            mnemonicColor = getTheme().getColor("tcheckbox.mnemonic");
+        }
+        if (useWindowBackground) {
+            CellAttributes background = getWindow().getBackground();
+            checkboxColor.setBackColor(background.getBackColor());
+        }
+
+        putCharXY(0, 0, '[', checkboxColor);
+        if (checked) {
+            putCharXY(1, 0, GraphicsChars.CHECK, checkboxColor);
+        } else {
+            putCharXY(1, 0, ' ', checkboxColor);
+        }
+        putCharXY(2, 0, ']', checkboxColor);
+        putStringXY(4, 0, mnemonic.getRawLabel(), checkboxColor);
+        if (mnemonic.getScreenShortcutIdx() >= 0) {
+            putCharXY(4 + mnemonic.getScreenShortcutIdx(), 0,
+                mnemonic.getShortcut(), mnemonicColor);
+        }
+    }
+
+    // ------------------------------------------------------------------------
+    // TCheckBox --------------------------------------------------------------
+    // ------------------------------------------------------------------------
+
+    /**
+     * Get checked value.
+     *
+     * @return if true, this is checked
+     */
+    public boolean isChecked() {
+        return checked;
+    }
+
+    /**
+     * Set checked value.
+     *
+     * @param checked new checked value.
+     */
+    public void setChecked(final boolean checked) {
+        this.checked = checked;
+    }
+
+    /**
+     * Get the mnemonic string for this checkbox.
+     *
+     * @return mnemonic string
+     */
+    public MnemonicString getMnemonic() {
+        return mnemonic;
+    }
+
+}