--- /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.backend;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import jexer.TApplication;
+import jexer.TWindow;
+import jexer.event.TCommandEvent;
+import jexer.event.TInputEvent;
+import jexer.event.TKeypressEvent;
+import jexer.event.TMouseEvent;
+import jexer.event.TResizeEvent;
+import static jexer.TCommand.*;
+
+/**
+ * TWindowBackend uses a window in one TApplication to provide a backend for
+ * another TApplication.
+ *
+ * Note that TWindow has its own getScreen() and setTitle() functions.
+ * Clients in TWindowBackend's application won't be able to use it to get at
+ * the other application's screen. getOtherScreen() has been provided.
+ */
+public class TWindowBackend extends TWindow implements Backend {
+
+ // ------------------------------------------------------------------------
+ // Variables --------------------------------------------------------------
+ // ------------------------------------------------------------------------
+
+ /**
+ * The listening object that run() wakes up on new input.
+ */
+ private Object listener;
+
+ /**
+ * The object to sync on in draw(). This is normally otherScreen, but it
+ * could also be a MultiScreen.
+ */
+ private Object drawLock;
+
+ /**
+ * The event queue, filled up by a thread reading on input.
+ */
+ private List<TInputEvent> eventQueue;
+
+ /**
+ * The screen this window is monitoring.
+ */
+ private Screen otherScreen;
+
+ /**
+ * The application associated with otherScreen.
+ */
+ private TApplication otherApplication;
+
+ /**
+ * The session information.
+ */
+ private SessionInfo sessionInfo;
+
+ /**
+ * OtherScreen provides a hook to notify TWindowBackend of screen size
+ * changes.
+ */
+ private class OtherScreen extends LogicalScreen {
+
+ /**
+ * The TWindowBackend to notify.
+ */
+ private TWindowBackend window;
+
+ /**
+ * Public constructor.
+ */
+ public OtherScreen(final TWindowBackend window) {
+ this.window = window;
+ }
+
+ /**
+ * Resize the physical screen to match the logical screen dimensions.
+ */
+ @Override
+ public void resizeToScreen() {
+ window.setWidth(getWidth() + 2);
+ window.setHeight(getHeight() + 2);
+ }
+
+ /**
+ * Get the width of a character cell in pixels.
+ *
+ * @return the width in pixels of a character cell
+ */
+ @Override
+ public int getTextWidth() {
+ return window.getScreen().getTextWidth();
+ }
+
+ /**
+ * Get the height of a character cell in pixels.
+ *
+ * @return the height in pixels of a character cell
+ */
+ @Override
+ public int getTextHeight() {
+ return window.getScreen().getTextHeight();
+ }
+
+ }
+
+
+ // ------------------------------------------------------------------------
+ // Constructors -----------------------------------------------------------
+ // ------------------------------------------------------------------------
+
+ /**
+ * Public constructor. Window will be located at (0, 0).
+ *
+ * @param listener the object this backend needs to wake up when new
+ * input comes in
+ * @param application TApplication that manages this window
+ * @param title window title, will be centered along the top border
+ * @param width width of window
+ * @param height height of window
+ */
+ public TWindowBackend(final Object listener,
+ final TApplication application, final String title,
+ final int width, final int height) {
+
+ super(application, title, width, height);
+
+ this.listener = listener;
+ eventQueue = new ArrayList<TInputEvent>();
+ sessionInfo = new TSessionInfo(width, height);
+ otherScreen = new OtherScreen(this);
+ otherScreen.setDimensions(width - 2, height - 2);
+ drawLock = otherScreen;
+ setHiddenMouse(true);
+ }
+
+ /**
+ * Public constructor. Window will be located at (0, 0).
+ *
+ * @param listener the object this backend needs to wake up when new
+ * input comes in
+ * @param application TApplication that manages this window
+ * @param title window title, will be centered along the top border
+ * @param width width of window
+ * @param height height of window
+ * @param flags bitmask of RESIZABLE, CENTERED, or MODAL
+ */
+ public TWindowBackend(final Object listener,
+ final TApplication application, final String title,
+ final int width, final int height, final int flags) {
+
+ super(application, title, width, height, flags);
+
+ this.listener = listener;
+ eventQueue = new ArrayList<TInputEvent>();
+ sessionInfo = new TSessionInfo(width, height);
+ otherScreen = new OtherScreen(this);
+ otherScreen.setDimensions(width - 2, height - 2);
+ drawLock = otherScreen;
+ setHiddenMouse(true);
+ }
+
+ /**
+ * Public constructor.
+ *
+ * @param listener the object this backend needs to wake up when new
+ * input comes in
+ * @param application TApplication that manages this window
+ * @param title window title, will be centered along the top border
+ * @param x column relative to parent
+ * @param y row relative to parent
+ * @param width width of window
+ * @param height height of window
+ */
+ public TWindowBackend(final Object listener,
+ final TApplication application, final String title,
+ final int x, final int y, final int width, final int height) {
+
+ super(application, title, x, y, width, height);
+
+ this.listener = listener;
+ eventQueue = new ArrayList<TInputEvent>();
+ sessionInfo = new TSessionInfo(width, height);
+ otherScreen = new OtherScreen(this);
+ otherScreen.setDimensions(width - 2, height - 2);
+ drawLock = otherScreen;
+ setHiddenMouse(true);
+ }
+
+ /**
+ * Public constructor.
+ *
+ * @param listener the object this backend needs to wake up when new
+ * input comes in
+ * @param application TApplication that manages this window
+ * @param title window title, will be centered along the top border
+ * @param x column relative to parent
+ * @param y row relative to parent
+ * @param width width of window
+ * @param height height of window
+ * @param flags mask of RESIZABLE, CENTERED, or MODAL
+ */
+ public TWindowBackend(final Object listener,
+ final TApplication application, final String title,
+ final int x, final int y, final int width, final int height,
+ final int flags) {
+
+ super(application, title, x, y, width, height, flags);
+
+ this.listener = listener;
+ eventQueue = new ArrayList<TInputEvent>();
+ sessionInfo = new TSessionInfo(width, height);
+ otherScreen = new OtherScreen(this);
+ otherScreen.setDimensions(width - 2, height - 2);
+ drawLock = otherScreen;
+ setHiddenMouse(true);
+ }
+
+ // ------------------------------------------------------------------------
+ // Event handlers ---------------------------------------------------------
+ // ------------------------------------------------------------------------
+
+ /**
+ * Handle window/screen resize events.
+ *
+ * @param event resize event
+ */
+ @Override
+ public void onResize(final TResizeEvent event) {
+ if (event.getType() == TResizeEvent.Type.WIDGET) {
+ int newWidth = event.getWidth() - 2;
+ int newHeight = event.getHeight() - 2;
+ if ((newWidth != otherScreen.getWidth())
+ || (newHeight != otherScreen.getHeight())
+ ) {
+ // I was resized, notify the screen I am watching to match my
+ // new size.
+ synchronized (eventQueue) {
+ eventQueue.add(new TResizeEvent(TResizeEvent.Type.SCREEN,
+ newWidth, newHeight));
+ }
+ synchronized (listener) {
+ listener.notifyAll();
+ }
+ }
+ return;
+ } else {
+ super.onResize(event);
+ }
+ }
+
+ /**
+ * Returns true if the mouse is currently in the otherScreen window.
+ *
+ * @param mouse mouse event
+ * @return true if mouse is currently in the otherScreen window.
+ */
+ protected boolean mouseOnOtherScreen(final TMouseEvent mouse) {
+ if ((mouse.getY() >= 1)
+ && (mouse.getY() <= otherScreen.getHeight())
+ && (mouse.getX() >= 1)
+ && (mouse.getX() <= otherScreen.getWidth())
+ ) {
+ return true;
+ }
+ return false;
+ }
+
+ /**
+ * Handle mouse button presses.
+ *
+ * @param mouse mouse button event
+ */
+ @Override
+ public void onMouseDown(final TMouseEvent mouse) {
+ if (mouseOnOtherScreen(mouse)) {
+ TMouseEvent event = mouse.dup();
+ event.setX(mouse.getX() - 1);
+ event.setY(mouse.getY() - 1);
+ event.setAbsoluteX(event.getX());
+ event.setAbsoluteY(event.getY());
+ synchronized (eventQueue) {
+ eventQueue.add(event);
+ }
+ synchronized (listener) {
+ listener.notifyAll();
+ }
+ }
+ super.onMouseDown(mouse);
+ }
+
+ /**
+ * Handle mouse button releases.
+ *
+ * @param mouse mouse button release event
+ */
+ @Override
+ public void onMouseUp(final TMouseEvent mouse) {
+ if (mouseOnOtherScreen(mouse)) {
+ TMouseEvent event = mouse.dup();
+ event.setX(mouse.getX() - 1);
+ event.setY(mouse.getY() - 1);
+ event.setAbsoluteX(event.getX());
+ event.setAbsoluteY(event.getY());
+ synchronized (eventQueue) {
+ eventQueue.add(event);
+ }
+ synchronized (listener) {
+ listener.notifyAll();
+ }
+ }
+ super.onMouseUp(mouse);
+ }
+
+ /**
+ * Handle mouse movements.
+ *
+ * @param mouse mouse motion event
+ */
+ @Override
+ public void onMouseMotion(final TMouseEvent mouse) {
+ if (mouseOnOtherScreen(mouse)) {
+ TMouseEvent event = mouse.dup();
+ event.setX(mouse.getX() - 1);
+ event.setY(mouse.getY() - 1);
+ event.setAbsoluteX(event.getX());
+ event.setAbsoluteY(event.getY());
+ synchronized (eventQueue) {
+ eventQueue.add(event);
+ }
+ synchronized (listener) {
+ listener.notifyAll();
+ }
+ }
+ super.onMouseMotion(mouse);
+ }
+
+ /**
+ * Handle keystrokes.
+ *
+ * @param keypress keystroke event
+ */
+ @Override
+ public void onKeypress(final TKeypressEvent keypress) {
+ TKeypressEvent event = keypress.dup();
+ synchronized (eventQueue) {
+ eventQueue.add(event);
+ }
+ synchronized (listener) {
+ listener.notifyAll();
+ }
+ }
+
+ // ------------------------------------------------------------------------
+ // TWindow ----------------------------------------------------------------
+ // ------------------------------------------------------------------------
+
+ /**
+ * Draw the foreground colors grid.
+ */
+ @Override
+ public void draw() {
+
+ // Sync on other screen, so that we do not draw in the middle of
+ // their screen update.
+ synchronized (drawLock) {
+ // Draw the box
+ super.draw();
+
+ // Draw every cell of the other screen
+ for (int y = 0; y < otherScreen.getHeight(); y++) {
+ for (int x = 0; x < otherScreen.getWidth(); x++) {
+ putCharXY(x + 1, y + 1, otherScreen.getCharXY(x, y));
+ }
+ }
+
+ // If their cursor is visible, draw that here too.
+ if (otherScreen.isCursorVisible()) {
+ setCursorX(otherScreen.getCursorX() + 1);
+ setCursorY(otherScreen.getCursorY() + 1);
+ setCursorVisible(true);
+ } else {
+ setCursorVisible(false);
+ }
+ }
+
+ // Check if the other application has died. If so, unset hidden
+ // mouse.
+ if (otherApplication != null) {
+ if (otherApplication.isRunning() == false) {
+ setHiddenMouse(false);
+ }
+ }
+
+ }
+
+ /**
+ * Subclasses should override this method to cleanup resources. This is
+ * called by application.closeWindow().
+ */
+ @Override
+ public void onClose() {
+ synchronized (eventQueue) {
+ eventQueue.add(new TCommandEvent(cmBackendDisconnect));
+ }
+ }
+
+ // ------------------------------------------------------------------------
+ // Backend ----------------------------------------------------------------
+ // ------------------------------------------------------------------------
+
+ /**
+ * Getter for sessionInfo.
+ *
+ * @return the SessionInfo
+ */
+ public final SessionInfo getSessionInfo() {
+ return sessionInfo;
+ }
+
+ /**
+ * Subclasses must provide an implementation that syncs the logical
+ * screen to the physical device.
+ */
+ public void flushScreen() {
+ getApplication().doRepaint();
+ }
+
+ /**
+ * Check if there are events in the queue.
+ *
+ * @return if true, getEvents() has something to return to the application
+ */
+ public boolean hasEvents() {
+ synchronized (eventQueue) {
+ return (eventQueue.size() > 0);
+ }
+ }
+
+ /**
+ * Subclasses must provide an implementation to get keyboard, mouse, and
+ * screen resize events.
+ *
+ * @param queue list to append new events to
+ */
+ public void getEvents(List<TInputEvent> queue) {
+ synchronized (eventQueue) {
+ if (eventQueue.size() > 0) {
+ synchronized (queue) {
+ queue.addAll(eventQueue);
+ }
+ eventQueue.clear();
+ }
+ }
+ }
+
+ /**
+ * Subclasses must provide an implementation that closes sockets,
+ * restores console, etc.
+ */
+ public void shutdown() {
+ // NOP
+ }
+
+ /**
+ * Set listener to a different Object.
+ *
+ * @param listener the new listening object that run() wakes up on new
+ * input
+ */
+ public void setListener(final Object listener) {
+ this.listener = listener;
+ }
+
+ /**
+ * Reload backend options from System properties.
+ */
+ public void reloadOptions() {
+ // NOP
+ }
+
+ // ------------------------------------------------------------------------
+ // TWindowBackend ---------------------------------------------------------
+ // ------------------------------------------------------------------------
+
+ /**
+ * Set the object to sync to in draw().
+ *
+ * @param drawLock the object to synchronize on
+ */
+ public void setDrawLock(final Object drawLock) {
+ this.drawLock = drawLock;
+ }
+
+ /**
+ * Getter for the other application's screen.
+ *
+ * @return the Screen
+ */
+ public Screen getOtherScreen() {
+ return otherScreen;
+ }
+
+ /**
+ * Set the other screen's application.
+ *
+ * @param application the application driving the other screen
+ */
+ public void setOtherApplication(final TApplication application) {
+ this.otherApplication = application;
+ }
+
+}
git://git.nikiroo.be / fanfix.git / blobdiff