+++ /dev/null
-/*
- * 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 jexer.bits.CellAttributes;
-import jexer.bits.Color;
-import jexer.bits.GraphicsChars;
-import jexer.bits.MnemonicString;
-import jexer.bits.StringUtils;
-import jexer.event.TKeypressEvent;
-import jexer.event.TMouseEvent;
-import static jexer.TKeypress.kbEnter;
-import static jexer.TKeypress.kbSpace;
-
-/**
- * TButton implements a simple button. To make the button do something, pass
- * a TAction class to its constructor.
- *
- * @see TAction#DO()
- */
-public class TButton extends TWidget {
-
- // ------------------------------------------------------------------------
- // Variables --------------------------------------------------------------
- // ------------------------------------------------------------------------
-
- /**
- * The shortcut and button text.
- */
- private MnemonicString mnemonic;
-
- /**
- * Remember mouse state.
- */
- private TMouseEvent mouse;
-
- /**
- * True when the button is being pressed and held down.
- */
- private boolean inButtonPress = false;
-
- /**
- * The action to perform when the button is clicked.
- */
- private TAction action;
-
- /**
- * The background color used for the button "shadow", or null for "no
- * shadow".
- */
- private CellAttributes shadowColor;
-
- // ------------------------------------------------------------------------
- // Constructors -----------------------------------------------------------
- // ------------------------------------------------------------------------
-
- /**
- * Private constructor.
- *
- * @param parent parent widget
- * @param text label on the button
- * @param x column relative to parent
- * @param y row relative to parent
- */
- private TButton(final TWidget parent, final String text,
- final int x, final int y) {
-
- // Set parent and window
- super(parent);
-
- mnemonic = new MnemonicString(text);
-
- setX(x);
- setY(y);
- super.setHeight(2);
- super.setWidth(StringUtils.width(mnemonic.getRawLabel()) + 3);
-
- shadowColor = new CellAttributes();
- shadowColor.setTo(getWindow().getBackground());
- shadowColor.setForeColor(Color.BLACK);
- shadowColor.setBold(false);
-
- // Since we set dimensions after TWidget's constructor, we need to
- // update the layout manager.
- if (getParent().getLayoutManager() != null) {
- getParent().getLayoutManager().remove(this);
- getParent().getLayoutManager().add(this);
- }
- }
-
- /**
- * Public constructor.
- *
- * @param parent parent widget
- * @param text label on the button
- * @param x column relative to parent
- * @param y row relative to parent
- * @param action to call when button is pressed
- */
- public TButton(final TWidget parent, final String text,
- final int x, final int y, final TAction action) {
-
- this(parent, text, x, y);
- this.action = action;
- }
-
- // ------------------------------------------------------------------------
- // Event handlers ---------------------------------------------------------
- // ------------------------------------------------------------------------
-
- /**
- * Returns true if the mouse is currently on the button.
- *
- * @return if true the mouse is currently on the button
- */
- private boolean mouseOnButton() {
- int rightEdge = getWidth() - 1;
- if (inButtonPress) {
- rightEdge++;
- }
- if ((mouse != null)
- && (mouse.getY() == 0)
- && (mouse.getX() >= 0)
- && (mouse.getX() < rightEdge)
- ) {
- return true;
- }
- return false;
- }
-
- /**
- * Handle mouse button presses.
- *
- * @param mouse mouse button event
- */
- @Override
- public void onMouseDown(final TMouseEvent mouse) {
- this.mouse = mouse;
-
- if ((mouseOnButton()) && (mouse.isMouse1())) {
- // Begin button press
- inButtonPress = true;
- }
- }
-
- /**
- * Handle mouse button releases.
- *
- * @param mouse mouse button release event
- */
- @Override
- public void onMouseUp(final TMouseEvent mouse) {
- this.mouse = mouse;
-
- if (inButtonPress && mouse.isMouse1()) {
- // Dispatch the event
- dispatch();
- }
-
- }
-
- /**
- * Handle mouse movements.
- *
- * @param mouse mouse motion event
- */
- @Override
- public void onMouseMotion(final TMouseEvent mouse) {
- this.mouse = mouse;
-
- if (!mouseOnButton()) {
- inButtonPress = false;
- }
- }
-
- /**
- * Handle keystrokes.
- *
- * @param keypress keystroke event
- */
- @Override
- public void onKeypress(final TKeypressEvent keypress) {
- if (keypress.equals(kbEnter)
- || keypress.equals(kbSpace)
- ) {
- // Dispatch
- dispatch();
- return;
- }
-
- // Pass to parent for the things we don't care about.
- super.onKeypress(keypress);
- }
-
- // ------------------------------------------------------------------------
- // TWidget ----------------------------------------------------------------
- // ------------------------------------------------------------------------
-
- /**
- * Override TWidget's width: we can only set width at construction time.
- *
- * @param width new widget width (ignored)
- */
- @Override
- public void setWidth(final int width) {
- // Do nothing
- }
-
- /**
- * Override TWidget's height: we can only set height at construction
- * time.
- *
- * @param height new widget height (ignored)
- */
- @Override
- public void setHeight(final int height) {
- // Do nothing
- }
-
- /**
- * Draw a button with a shadow.
- */
- @Override
- public void draw() {
- CellAttributes buttonColor;
- CellAttributes menuMnemonicColor;
-
- if (!isEnabled()) {
- buttonColor = getTheme().getColor("tbutton.disabled");
- menuMnemonicColor = getTheme().getColor("tbutton.disabled");
- } else if (isAbsoluteActive()) {
- buttonColor = getTheme().getColor("tbutton.active");
- menuMnemonicColor = getTheme().getColor("tbutton.mnemonic.highlighted");
- } else {
- buttonColor = getTheme().getColor("tbutton.inactive");
- menuMnemonicColor = getTheme().getColor("tbutton.mnemonic");
- }
-
- if (inButtonPress) {
- putCharXY(1, 0, ' ', buttonColor);
- putStringXY(2, 0, mnemonic.getRawLabel(), buttonColor);
- putCharXY(getWidth() - 1, 0, ' ', buttonColor);
- } else {
- putCharXY(0, 0, ' ', buttonColor);
- putStringXY(1, 0, mnemonic.getRawLabel(), buttonColor);
- putCharXY(getWidth() - 2, 0, ' ', buttonColor);
-
- if (shadowColor != null) {
- putCharXY(getWidth() - 1, 0,
- GraphicsChars.CP437[0xDC], shadowColor);
- hLineXY(1, 1, getWidth() - 1,
- GraphicsChars.CP437[0xDF], shadowColor);
- }
- }
- if (mnemonic.getScreenShortcutIdx() >= 0) {
- if (inButtonPress) {
- putCharXY(2 + mnemonic.getScreenShortcutIdx(), 0,
- mnemonic.getShortcut(), menuMnemonicColor);
- } else {
- putCharXY(1 + mnemonic.getScreenShortcutIdx(), 0,
- mnemonic.getShortcut(), menuMnemonicColor);
- }
- }
- }
-
- // ------------------------------------------------------------------------
- // TButton ----------------------------------------------------------------
- // ------------------------------------------------------------------------
-
- /**
- * Get the mnemonic string for this button.
- *
- * @return mnemonic string
- */
- public MnemonicString getMnemonic() {
- return mnemonic;
- }
-
- /**
- * Act as though the button was pressed. This is useful for other UI
- * elements to get the same action as if the user clicked the button.
- */
- public void dispatch() {
- if (action != null) {
- action.DO(this);
- inButtonPress = false;
- }
- }
-
- /**
- * Set the background color used for the button "shadow". If null, no
- * shadow will be drawn.
- *
- * @param color the new background color, or null for no shadow
- */
- public void setShadowColor(final CellAttributes color) {
- if (color != null) {
- shadowColor = new CellAttributes();
- shadowColor.setTo(color);
- shadowColor.setForeColor(Color.BLACK);
- shadowColor.setBold(false);
- } else {
- shadowColor = null;
- }
- }
-
-}
git://git.nikiroo.be / fanfix.git / blobdiff