Many changes:

[fanfix.git] / src / jexer / TSpinner.java

diff --git a/src/jexer/TSpinner.java b/src/jexer/TSpinner.java
new file mode 100644 (file)
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+++ b/src/jexer/TSpinner.java
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+/*
+ * Jexer - Java Text User Interface
+ *
+ * The MIT License (MIT)
+ *
+ * Copyright (C) 2017 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 jexer.bits.CellAttributes;
+import jexer.bits.GraphicsChars;
+import jexer.event.TKeypressEvent;
+import jexer.event.TMouseEvent;
+import static jexer.TKeypress.*;
+
+/**
+ * TSpinner implements a simple up/down spinner.  Values can be numer
+ */
+public class TSpinner extends TWidget {
+
+    // ------------------------------------------------------------------------
+    // Variables --------------------------------------------------------------
+    // ------------------------------------------------------------------------
+
+    /**
+     * The action to perform when the user clicks on the up arrow.
+     */
+    private TAction upAction = null;
+
+    /**
+     * The action to perform when the user clicks on the down arrow.
+     */
+    private TAction downAction = null;
+
+    // ------------------------------------------------------------------------
+    // Constructors -----------------------------------------------------------
+    // ------------------------------------------------------------------------
+
+    /**
+     * Public constructor.
+     *
+     * @param parent parent widget
+     * @param x column relative to parent
+     * @param y row relative to parent
+     * @param upAction action to call when the up arrow is clicked or pressed
+     * @param downAction action to call when the down arrow is clicked or
+     * pressed
+     */
+    public TSpinner(final TWidget parent, final int x, final int y,
+        final TAction upAction, final TAction downAction) {
+
+        // Set parent and window
+        super(parent, x, y, 2, 1);
+
+        this.upAction = upAction;
+        this.downAction = downAction;
+    }
+
+    // ------------------------------------------------------------------------
+    // Event handlers ---------------------------------------------------------
+    // ------------------------------------------------------------------------
+
+    /**
+     * Returns true if the mouse is currently on the up arrow.
+     *
+     * @param mouse mouse event
+     * @return true if the mouse is currently on the up arrow
+     */
+    private boolean mouseOnUpArrow(final TMouseEvent mouse) {
+        if ((mouse.getY() == 0)
+            && (mouse.getX() == getWidth() - 1)
+        ) {
+            return true;
+        }
+        return false;
+    }
+
+    /**
+     * Returns true if the mouse is currently on the down arrow.
+     *
+     * @param mouse mouse event
+     * @return true if the mouse is currently on the down arrow
+     */
+    private boolean mouseOnDownArrow(final TMouseEvent mouse) {
+        if ((mouse.getY() == 0)
+            && (mouse.getX() == getWidth() - 2)
+        ) {
+            return true;
+        }
+        return false;
+    }
+
+    /**
+     * Handle mouse checkbox presses.
+     *
+     * @param mouse mouse button down event
+     */
+    @Override
+    public void onMouseDown(final TMouseEvent mouse) {
+        if ((mouseOnUpArrow(mouse)) && (mouse.isMouse1())) {
+            up();
+        } else if ((mouseOnDownArrow(mouse)) && (mouse.isMouse1())) {
+            down();
+        }
+    }
+
+    /**
+     * Handle keystrokes.
+     *
+     * @param keypress keystroke event
+     */
+    @Override
+    public void onKeypress(final TKeypressEvent keypress) {
+        if (keypress.equals(kbUp)) {
+            up();
+            return;
+        }
+        if (keypress.equals(kbDown)) {
+            down();
+            return;
+        }
+
+        // Pass to parent for the things we don't care about.
+        super.onKeypress(keypress);
+    }
+
+    // ------------------------------------------------------------------------
+    // TWidget ----------------------------------------------------------------
+    // ------------------------------------------------------------------------
+
+    /**
+     * Draw the spinner arrows.
+     */
+    @Override
+    public void draw() {
+        CellAttributes spinnerColor;
+
+        if (isAbsoluteActive()) {
+            spinnerColor = getTheme().getColor("tspinner.active");
+        } else {
+            spinnerColor = getTheme().getColor("tspinner.inactive");
+        }
+
+        getScreen().putCharXY(getWidth() - 2, 0, GraphicsChars.UPARROW,
+            spinnerColor);
+        getScreen().putCharXY(getWidth() - 1, 0, GraphicsChars.DOWNARROW,
+            spinnerColor);
+    }
+
+    // ------------------------------------------------------------------------
+    // TSpinner ---------------------------------------------------------------
+    // ------------------------------------------------------------------------
+
+    /**
+     * Perform the "up" action.
+     */
+    private void up() {
+        if (upAction != null) {
+            upAction.DO();
+        }
+    }
+
+    /**
+     * Perform the "down" action.
+     */
+    private void down() {
+        if (downAction != null) {
+            downAction.DO();
+        }
+    }
+
+}