*
* The MIT License (MIT)
*
- * Copyright (C) 2016 Kevin Lamonte
+ * 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"),
import jexer.menu.TMenu;
import jexer.menu.TMenuItem;
import static jexer.TCommand.*;
+import static jexer.TKeypress.*;
/**
* TApplication sets up a full Text User Interface application.
*/
public class TApplication implements Runnable {
+ // ------------------------------------------------------------------------
+ // Public constants -------------------------------------------------------
+ // ------------------------------------------------------------------------
+
/**
* If true, emit thread stuff to System.err.
*/
*/
private static final boolean debugEvents = false;
+ /**
+ * If true, do "smart placement" on new windows that are not specified to
+ * be centered.
+ */
+ private static final boolean smartWindowPlacement = true;
+
/**
* Two backend types are available.
*/
XTERM
}
+ // ------------------------------------------------------------------------
+ // Primary/secondary event handlers ---------------------------------------
+ // ------------------------------------------------------------------------
+
/**
* WidgetEventHandler is the main event consumer loop. There are at most
* two such threads in existence: the primary for normal case and a
lockoutHandleEvent = false;
}
+ // ------------------------------------------------------------------------
+ // TApplication attributes ------------------------------------------------
+ // ------------------------------------------------------------------------
+
/**
* Access to the physical screen, keyboard, and mouse.
*/
return desktopBottom;
}
+ /**
+ * An optional TDesktop background window that is drawn underneath
+ * everything else.
+ */
+ private TDesktop desktop;
+
+ /**
+ * Set the TDesktop instance.
+ *
+ * @param desktop a TDesktop instance, or null to remove the one that is
+ * set
+ */
+ public final void setDesktop(final TDesktop desktop) {
+ if (this.desktop != null) {
+ this.desktop.onClose();
+ }
+ this.desktop = desktop;
+ }
+
+ /**
+ * Get the TDesktop instance.
+ *
+ * @return the desktop, or null if it is not set
+ */
+ public final TDesktop getDesktop() {
+ return desktop;
+ }
+
+ // ------------------------------------------------------------------------
+ // General behavior -------------------------------------------------------
+ // ------------------------------------------------------------------------
+
+ /**
+ * Display the about dialog.
+ */
+ protected void showAboutDialog() {
+ messageBox("About", "Jexer Version " +
+ this.getClass().getPackage().getImplementationVersion(),
+ TMessageBox.Type.OK);
+ }
+
+ // ------------------------------------------------------------------------
+ // Constructors -----------------------------------------------------------
+ // ------------------------------------------------------------------------
+
/**
* Public constructor.
*
timers = new LinkedList<TTimer>();
accelerators = new HashMap<TKeypress, TMenuItem>();
menuItems = new ArrayList<TMenuItem>();
+ desktop = new TDesktop(this);
// Setup the main consumer thread
primaryEventHandler = new WidgetEventHandler(this, true);
(new Thread(primaryEventHandler)).start();
}
+ // ------------------------------------------------------------------------
+ // Screen refresh loop ----------------------------------------------------
+ // ------------------------------------------------------------------------
+
/**
* Invert the cell color at a position. This is used to track the mouse.
*
// Start with a clean screen
getScreen().clear();
- // Draw the background
- CellAttributes background = theme.getColor("tapplication.background");
- getScreen().putAll(GraphicsChars.HATCH, background);
+ // Draw the desktop
+ if (desktop != null) {
+ desktop.drawChildren();
+ }
// Draw each window in reverse Z order
List<TWindow> sorted = new LinkedList<TWindow>(windows);
Collections.sort(sorted);
+ TWindow topLevel = null;
+ if (sorted.size() > 0) {
+ topLevel = sorted.get(0);
+ }
Collections.reverse(sorted);
for (TWindow window: sorted) {
window.drawChildren();
if (menu.isActive()) {
menuColor = theme.getColor("tmenu.highlighted");
menuMnemonicColor = theme.getColor("tmenu.mnemonic.highlighted");
+ topLevel = menu;
} else {
menuColor = theme.getColor("tmenu");
menuMnemonicColor = theme.getColor("tmenu.mnemonic");
menu.drawChildren();
}
+ // Draw the status bar of the top-level window
+ TStatusBar statusBar = null;
+ if (topLevel != null) {
+ statusBar = topLevel.getStatusBar();
+ }
+ if (statusBar != null) {
+ getScreen().resetClipping();
+ statusBar.setWidth(getScreen().getWidth());
+ statusBar.setY(getScreen().getHeight() - topLevel.getY());
+ statusBar.draw();
+ } else {
+ CellAttributes barColor = new CellAttributes();
+ barColor.setTo(getTheme().getColor("tstatusbar.text"));
+ getScreen().hLineXY(0, desktopBottom, getScreen().getWidth(), ' ',
+ barColor);
+ }
+
// Draw the mouse pointer
invertCell(mouseX, mouseY);
oldMouseX = mouseX;
repaint = false;
}
+ // ------------------------------------------------------------------------
+ // Main loop --------------------------------------------------------------
+ // ------------------------------------------------------------------------
+
/**
* Run this application until it exits.
*/
oldMouseX = 0;
oldMouseY = 0;
}
+ if (desktop != null) {
+ desktop.setDimensions(0, 0, resize.getWidth(),
+ resize.getHeight() - 1);
+ }
return;
}
}
}
- if (!windowWillShortcut) {
+ if (!windowWillShortcut && !modalWindowActive()) {
TKeypress keypressLowercase = keypress.getKey().toLowerCase();
TMenuItem item = null;
synchronized (accelerators) {
return;
}
}
- }
- // Handle the keypress
- if (onKeypress(keypress)) {
- return;
+ // Handle the keypress
+ if (onKeypress(keypress)) {
+ return;
+ }
}
}
}
// Dispatch events to the active window -------------------------------
+ boolean dispatchToDesktop = true;
for (TWindow window: windows) {
if (window.isActive()) {
if (event instanceof TMouseEvent) {
assert (mouse.getY() == mouse.getAbsoluteY());
mouse.setX(mouse.getX() - window.getX());
mouse.setY(mouse.getY() - window.getY());
+
+ if (window.mouseWouldHit(mouse)) {
+ dispatchToDesktop = false;
+ }
+ } else if (event instanceof TKeypressEvent) {
+ dispatchToDesktop = false;
}
+
if (debugEvents) {
System.err.printf("TApplication dispatch event: %s\n",
event);
break;
}
}
+ if (dispatchToDesktop) {
+ // This event is fair game for the desktop to process.
+ if (desktop != null) {
+ desktop.handleEvent(event);
+ }
+ }
}
+
/**
* Dispatch one event to the appropriate widget or application-level
* event handler. This is the secondary event handler used by certain
}
}
- /**
- * Get the amount of time I can sleep before missing a Timer tick.
- *
- * @param timeout = initial (maximum) timeout in millis
- * @return number of milliseconds between now and the next timer event
- */
- private long getSleepTime(final long timeout) {
- Date now = new Date();
- long nowTime = now.getTime();
- long sleepTime = timeout;
- for (TTimer timer: timers) {
- long nextTickTime = timer.getNextTick().getTime();
- if (nextTickTime < nowTime) {
- return 0;
- }
-
- long timeDifference = nextTickTime - nowTime;
- if (timeDifference < sleepTime) {
- sleepTime = timeDifference;
- }
- }
- assert (sleepTime >= 0);
- assert (sleepTime <= timeout);
- return sleepTime;
- }
+ // ------------------------------------------------------------------------
+ // TWindow management -----------------------------------------------------
+ // ------------------------------------------------------------------------
/**
* Close window. Note that the window's destructor is NOT called by this
* @param window new window to add
*/
public final void addWindow(final TWindow window) {
+
+ // Do not add menu windows to the window list.
+ if (window instanceof TMenu) {
+ return;
+ }
+
+ // Do not add the desktop to the window list.
+ if (window instanceof TDesktop) {
+ return;
+ }
+
synchronized (windows) {
- // Do not allow a modal window to spawn a non-modal window
- if ((windows.size() > 0) && (windows.get(0).isModal())) {
- assert (window.isModal());
+ // Do not allow a modal window to spawn a non-modal window. If a
+ // modal window is active, then this window will become modal
+ // too.
+ if (modalWindowActive()) {
+ window.flags |= TWindow.MODAL;
+ window.flags |= TWindow.CENTERED;
}
for (TWindow w: windows) {
if (w.isActive()) {
window.setZ(0);
window.setActive(true);
window.onFocus();
+
+ if (((window.flags & TWindow.CENTERED) == 0)
+ && smartWindowPlacement) {
+
+ doSmartPlacement(window);
+ }
}
}
if (windows.size() == 0) {
return false;
}
- return windows.get(windows.size() - 1).isModal();
+
+ for (TWindow w: windows) {
+ if (w.isModal()) {
+ return true;
+ }
+ }
+
+ return false;
+ }
+
+ /**
+ * Close all open windows.
+ */
+ private void closeAllWindows() {
+ // Don't do anything if we are in the menu
+ if (activeMenu != null) {
+ return;
+ }
+ while (windows.size() > 0) {
+ closeWindow(windows.get(0));
+ }
+ }
+
+ /**
+ * Re-layout the open windows as non-overlapping tiles. This produces
+ * almost the same results as Turbo Pascal 7.0's IDE.
+ */
+ private void tileWindows() {
+ synchronized (windows) {
+ // Don't do anything if we are in the menu
+ if (activeMenu != null) {
+ return;
+ }
+ int z = windows.size();
+ if (z == 0) {
+ return;
+ }
+ int a = 0;
+ int b = 0;
+ a = (int)(Math.sqrt(z));
+ int c = 0;
+ while (c < a) {
+ b = (z - c) / a;
+ if (((a * b) + c) == z) {
+ break;
+ }
+ c++;
+ }
+ assert (a > 0);
+ assert (b > 0);
+ assert (c < a);
+ int newWidth = (getScreen().getWidth() / a);
+ int newHeight1 = ((getScreen().getHeight() - 1) / b);
+ int newHeight2 = ((getScreen().getHeight() - 1) / (b + c));
+
+ List<TWindow> sorted = new LinkedList<TWindow>(windows);
+ Collections.sort(sorted);
+ Collections.reverse(sorted);
+ for (int i = 0; i < sorted.size(); i++) {
+ int logicalX = i / b;
+ int logicalY = i % b;
+ if (i >= ((a - 1) * b)) {
+ logicalX = a - 1;
+ logicalY = i - ((a - 1) * b);
+ }
+
+ TWindow w = sorted.get(i);
+ w.setX(logicalX * newWidth);
+ w.setWidth(newWidth);
+ if (i >= ((a - 1) * b)) {
+ w.setY((logicalY * newHeight2) + 1);
+ w.setHeight(newHeight2);
+ } else {
+ w.setY((logicalY * newHeight1) + 1);
+ w.setHeight(newHeight1);
+ }
+ }
+ }
+ }
+
+ /**
+ * Re-layout the open windows as overlapping cascaded windows.
+ */
+ private void cascadeWindows() {
+ synchronized (windows) {
+ // Don't do anything if we are in the menu
+ if (activeMenu != null) {
+ return;
+ }
+ int x = 0;
+ int y = 1;
+ List<TWindow> sorted = new LinkedList<TWindow>(windows);
+ Collections.sort(sorted);
+ Collections.reverse(sorted);
+ for (TWindow window: sorted) {
+ window.setX(x);
+ window.setY(y);
+ x++;
+ y++;
+ if (x > getScreen().getWidth()) {
+ x = 0;
+ }
+ if (y >= getScreen().getHeight()) {
+ y = 1;
+ }
+ }
+ }
}
+ /**
+ * Place a window to minimize its overlap with other windows.
+ *
+ * @param window the window to place
+ */
+ public final void doSmartPlacement(final TWindow window) {
+ // This is a pretty dumb algorithm, but seems to work. The hardest
+ // part is computing these "overlap" values seeking a minimum average
+ // overlap.
+ int xMin = 0;
+ int yMin = desktopTop;
+ int xMax = getScreen().getWidth() - window.getWidth() + 1;
+ int yMax = desktopBottom - window.getHeight() + 1;
+ if (xMax < xMin) {
+ xMax = xMin;
+ }
+ if (yMax < yMin) {
+ yMax = yMin;
+ }
+
+ if ((xMin == xMax) && (yMin == yMax)) {
+ // No work to do, bail out.
+ return;
+ }
+
+ // Compute the overlap matrix without the new window.
+ int width = getScreen().getWidth();
+ int height = getScreen().getHeight();
+ int overlapMatrix[][] = new int[width][height];
+ for (TWindow w: windows) {
+ if (window == w) {
+ continue;
+ }
+ for (int x = w.getX(); x < w.getX() + w.getWidth(); x++) {
+ if (x == width) {
+ continue;
+ }
+ for (int y = w.getY(); y < w.getY() + w.getHeight(); y++) {
+ if (y == height) {
+ continue;
+ }
+ overlapMatrix[x][y]++;
+ }
+ }
+ }
+
+ long oldOverlapTotal = 0;
+ long oldOverlapN = 0;
+ for (int x = 0; x < width; x++) {
+ for (int y = 0; y < height; y++) {
+ oldOverlapTotal += overlapMatrix[x][y];
+ if (overlapMatrix[x][y] > 0) {
+ oldOverlapN++;
+ }
+ }
+ }
+
+
+ double oldOverlapAvg = (double) oldOverlapTotal / (double) oldOverlapN;
+ boolean first = true;
+ int windowX = window.getX();
+ int windowY = window.getY();
+
+ // For each possible (x, y) position for the new window, compute a
+ // new overlap matrix.
+ for (int x = xMin; x < xMax; x++) {
+ for (int y = yMin; y < yMax; y++) {
+
+ // Start with the matrix minus this window.
+ int newMatrix[][] = new int[width][height];
+ for (int mx = 0; mx < width; mx++) {
+ for (int my = 0; my < height; my++) {
+ newMatrix[mx][my] = overlapMatrix[mx][my];
+ }
+ }
+
+ // Add this window's values to the new overlap matrix.
+ long newOverlapTotal = 0;
+ long newOverlapN = 0;
+ // Start by adding each new cell.
+ for (int wx = x; wx < x + window.getWidth(); wx++) {
+ if (wx == width) {
+ continue;
+ }
+ for (int wy = y; wy < y + window.getHeight(); wy++) {
+ if (wy == height) {
+ continue;
+ }
+ newMatrix[wx][wy]++;
+ }
+ }
+ // Now figure out the new value for total coverage.
+ for (int mx = 0; mx < width; mx++) {
+ for (int my = 0; my < height; my++) {
+ newOverlapTotal += newMatrix[x][y];
+ if (newMatrix[mx][my] > 0) {
+ newOverlapN++;
+ }
+ }
+ }
+ double newOverlapAvg = (double) newOverlapTotal / (double) newOverlapN;
+
+ if (first) {
+ // First time: just record what we got.
+ oldOverlapAvg = newOverlapAvg;
+ first = false;
+ } else {
+ // All other times: pick a new best (x, y) and save the
+ // overlap value.
+ if (newOverlapAvg < oldOverlapAvg) {
+ windowX = x;
+ windowY = y;
+ oldOverlapAvg = newOverlapAvg;
+ }
+ }
+
+ } // for (int x = xMin; x < xMax; x++)
+
+ } // for (int y = yMin; y < yMax; y++)
+
+ // Finally, set the window's new coordinates.
+ window.setX(windowX);
+ window.setY(windowY);
+ }
+
+ // ------------------------------------------------------------------------
+ // TMenu management -------------------------------------------------------
+ // ------------------------------------------------------------------------
+
/**
* Check if a mouse event would hit either the active menu or any open
* sub-menus.
}
/**
- * Method that TApplication subclasses can override to handle menu or
- * posted command events.
+ * Add a menu item to the global list. If it has a keyboard accelerator,
+ * that will be added the global hash.
*
- * @param command command event
- * @return if true, this event was consumed
+ * @param item the menu item
*/
- protected boolean onCommand(final TCommandEvent command) {
- // Default: handle cmExit
- if (command.equals(cmExit)) {
- if (messageBox("Confirmation", "Exit application?",
- TMessageBox.Type.YESNO).getResult() == TMessageBox.Result.YES) {
- quit = true;
- }
- return true;
- }
-
- if (command.equals(cmShell)) {
- openTerminal(0, 0, TWindow.RESIZABLE);
- return true;
- }
-
- if (command.equals(cmTile)) {
- tileWindows();
- return true;
- }
- if (command.equals(cmCascade)) {
- cascadeWindows();
- return true;
- }
- if (command.equals(cmCloseAll)) {
- closeAllWindows();
- return true;
- }
-
- return false;
- }
-
- /**
- * Display the about dialog.
- */
- protected void showAboutDialog() {
- messageBox("About", "Jexer Version " +
- this.getClass().getPackage().getImplementationVersion(),
- TMessageBox.Type.OK);
- }
-
- /**
- * Method that TApplication subclasses can override to handle menu
- * events.
- *
- * @param menu menu event
- * @return if true, this event was consumed
- */
- protected boolean onMenu(final TMenuEvent menu) {
-
- // Default: handle MID_EXIT
- if (menu.getId() == TMenu.MID_EXIT) {
- if (messageBox("Confirmation", "Exit application?",
- TMessageBox.Type.YESNO).getResult() == TMessageBox.Result.YES) {
- quit = true;
- }
- return true;
- }
-
- if (menu.getId() == TMenu.MID_SHELL) {
- openTerminal(0, 0, TWindow.RESIZABLE);
- return true;
- }
-
- if (menu.getId() == TMenu.MID_TILE) {
- tileWindows();
- return true;
- }
- if (menu.getId() == TMenu.MID_CASCADE) {
- cascadeWindows();
- return true;
- }
- if (menu.getId() == TMenu.MID_CLOSE_ALL) {
- closeAllWindows();
- return true;
- }
- if (menu.getId() == TMenu.MID_ABOUT) {
- showAboutDialog();
- return true;
- }
- return false;
- }
-
- /**
- * Method that TApplication subclasses can override to handle keystrokes.
- *
- * @param keypress keystroke event
- * @return if true, this event was consumed
- */
- protected boolean onKeypress(final TKeypressEvent keypress) {
- // Default: only menu shortcuts
-
- // Process Alt-F, Alt-E, etc. menu shortcut keys
- if (!keypress.getKey().isFnKey()
- && keypress.getKey().isAlt()
- && !keypress.getKey().isCtrl()
- && (activeMenu == null)
- ) {
-
- assert (subMenus.size() == 0);
-
- for (TMenu menu: menus) {
- if (Character.toLowerCase(menu.getMnemonic().getShortcut())
- == Character.toLowerCase(keypress.getKey().getChar())
- ) {
- activeMenu = menu;
- menu.setActive(true);
- return true;
- }
- }
- }
-
- return false;
- }
-
- /**
- * Add a menu item to the global list. If it has a keyboard accelerator,
- * that will be added the global hash.
- *
- * @param item the menu item
- */
- public final void addMenuItem(final TMenuItem item) {
- menuItems.add(item);
+ public final void addMenuItem(final TMenuItem item) {
+ menuItems.add(item);
TKeypress key = item.getKey();
if (key != null) {
fileMenu.addSeparator();
fileMenu.addDefaultItem(TMenu.MID_SHELL);
fileMenu.addDefaultItem(TMenu.MID_EXIT);
+ TStatusBar statusBar = fileMenu.newStatusBar("File-management " +
+ "commands (Open, Save, Print, etc.)");
+ statusBar.addShortcutKeypress(kbF1, cmHelp, "Help");
return fileMenu;
}
editMenu.addDefaultItem(TMenu.MID_COPY);
editMenu.addDefaultItem(TMenu.MID_PASTE);
editMenu.addDefaultItem(TMenu.MID_CLEAR);
+ TStatusBar statusBar = editMenu.newStatusBar("Editor operations, " +
+ "undo, and Clipboard access");
+ statusBar.addShortcutKeypress(kbF1, cmHelp, "Help");
return editMenu;
}
windowMenu.addDefaultItem(TMenu.MID_WINDOW_NEXT);
windowMenu.addDefaultItem(TMenu.MID_WINDOW_PREVIOUS);
windowMenu.addDefaultItem(TMenu.MID_WINDOW_CLOSE);
+ TStatusBar statusBar = windowMenu.newStatusBar("Open, arrange, and " +
+ "list windows");
+ statusBar.addShortcutKeypress(kbF1, cmHelp, "Help");
return windowMenu;
}
helpMenu.addDefaultItem(TMenu.MID_HELP_ACTIVE_FILE);
helpMenu.addSeparator();
helpMenu.addDefaultItem(TMenu.MID_ABOUT);
+ TStatusBar statusBar = helpMenu.newStatusBar("Access online help");
+ statusBar.addShortcutKeypress(kbF1, cmHelp, "Help");
return helpMenu;
}
+ // ------------------------------------------------------------------------
+ // Event handlers ---------------------------------------------------------
+ // ------------------------------------------------------------------------
+
/**
- * Close all open windows.
+ * Method that TApplication subclasses can override to handle menu or
+ * posted command events.
+ *
+ * @param command command event
+ * @return if true, this event was consumed
*/
- private void closeAllWindows() {
- // Don't do anything if we are in the menu
- if (activeMenu != null) {
- return;
+ protected boolean onCommand(final TCommandEvent command) {
+ // Default: handle cmExit
+ if (command.equals(cmExit)) {
+ if (messageBox("Confirmation", "Exit application?",
+ TMessageBox.Type.YESNO).getResult() == TMessageBox.Result.YES) {
+ quit = true;
+ }
+ return true;
}
- while (windows.size() > 0) {
- closeWindow(windows.get(0));
+
+ if (command.equals(cmShell)) {
+ openTerminal(0, 0, TWindow.RESIZABLE);
+ return true;
+ }
+
+ if (command.equals(cmTile)) {
+ tileWindows();
+ return true;
}
+ if (command.equals(cmCascade)) {
+ cascadeWindows();
+ return true;
+ }
+ if (command.equals(cmCloseAll)) {
+ closeAllWindows();
+ return true;
+ }
+
+ return false;
}
/**
- * Re-layout the open windows as non-overlapping tiles. This produces
- * almost the same results as Turbo Pascal 7.0's IDE.
+ * Method that TApplication subclasses can override to handle menu
+ * events.
+ *
+ * @param menu menu event
+ * @return if true, this event was consumed
*/
- private void tileWindows() {
- synchronized (windows) {
- // Don't do anything if we are in the menu
- if (activeMenu != null) {
- return;
- }
- int z = windows.size();
- if (z == 0) {
- return;
- }
- int a = 0;
- int b = 0;
- a = (int)(Math.sqrt(z));
- int c = 0;
- while (c < a) {
- b = (z - c) / a;
- if (((a * b) + c) == z) {
- break;
- }
- c++;
+ protected boolean onMenu(final TMenuEvent menu) {
+
+ // Default: handle MID_EXIT
+ if (menu.getId() == TMenu.MID_EXIT) {
+ if (messageBox("Confirmation", "Exit application?",
+ TMessageBox.Type.YESNO).getResult() == TMessageBox.Result.YES) {
+ quit = true;
}
- assert (a > 0);
- assert (b > 0);
- assert (c < a);
- int newWidth = (getScreen().getWidth() / a);
- int newHeight1 = ((getScreen().getHeight() - 1) / b);
- int newHeight2 = ((getScreen().getHeight() - 1) / (b + c));
+ return true;
+ }
- List<TWindow> sorted = new LinkedList<TWindow>(windows);
- Collections.sort(sorted);
- Collections.reverse(sorted);
- for (int i = 0; i < sorted.size(); i++) {
- int logicalX = i / b;
- int logicalY = i % b;
- if (i >= ((a - 1) * b)) {
- logicalX = a - 1;
- logicalY = i - ((a - 1) * b);
- }
+ if (menu.getId() == TMenu.MID_SHELL) {
+ openTerminal(0, 0, TWindow.RESIZABLE);
+ return true;
+ }
- TWindow w = sorted.get(i);
- w.setX(logicalX * newWidth);
- w.setWidth(newWidth);
- if (i >= ((a - 1) * b)) {
- w.setY((logicalY * newHeight2) + 1);
- w.setHeight(newHeight2);
- } else {
- w.setY((logicalY * newHeight1) + 1);
- w.setHeight(newHeight1);
+ if (menu.getId() == TMenu.MID_TILE) {
+ tileWindows();
+ return true;
+ }
+ if (menu.getId() == TMenu.MID_CASCADE) {
+ cascadeWindows();
+ return true;
+ }
+ if (menu.getId() == TMenu.MID_CLOSE_ALL) {
+ closeAllWindows();
+ return true;
+ }
+ if (menu.getId() == TMenu.MID_ABOUT) {
+ showAboutDialog();
+ return true;
+ }
+ return false;
+ }
+
+ /**
+ * Method that TApplication subclasses can override to handle keystrokes.
+ *
+ * @param keypress keystroke event
+ * @return if true, this event was consumed
+ */
+ protected boolean onKeypress(final TKeypressEvent keypress) {
+ // Default: only menu shortcuts
+
+ // Process Alt-F, Alt-E, etc. menu shortcut keys
+ if (!keypress.getKey().isFnKey()
+ && keypress.getKey().isAlt()
+ && !keypress.getKey().isCtrl()
+ && (activeMenu == null)
+ && !modalWindowActive()
+ ) {
+
+ assert (subMenus.size() == 0);
+
+ for (TMenu menu: menus) {
+ if (Character.toLowerCase(menu.getMnemonic().getShortcut())
+ == Character.toLowerCase(keypress.getKey().getChar())
+ ) {
+ activeMenu = menu;
+ menu.setActive(true);
+ return true;
}
}
}
+
+ return false;
}
+ // ------------------------------------------------------------------------
+ // TTimer management ------------------------------------------------------
+ // ------------------------------------------------------------------------
+
/**
- * Re-layout the open windows as overlapping cascaded windows.
+ * Get the amount of time I can sleep before missing a Timer tick.
+ *
+ * @param timeout = initial (maximum) timeout in millis
+ * @return number of milliseconds between now and the next timer event
*/
- private void cascadeWindows() {
- synchronized (windows) {
- // Don't do anything if we are in the menu
- if (activeMenu != null) {
- return;
+ private long getSleepTime(final long timeout) {
+ Date now = new Date();
+ long nowTime = now.getTime();
+ long sleepTime = timeout;
+ for (TTimer timer: timers) {
+ long nextTickTime = timer.getNextTick().getTime();
+ if (nextTickTime < nowTime) {
+ return 0;
}
- int x = 0;
- int y = 1;
- List<TWindow> sorted = new LinkedList<TWindow>(windows);
- Collections.sort(sorted);
- Collections.reverse(sorted);
- for (TWindow window: sorted) {
- window.setX(x);
- window.setY(y);
- x++;
- y++;
- if (x > getScreen().getWidth()) {
- x = 0;
- }
- if (y >= getScreen().getHeight()) {
- y = 1;
- }
+
+ long timeDifference = nextTickTime - nowTime;
+ if (timeDifference < sleepTime) {
+ sleepTime = timeDifference;
}
}
+ assert (sleepTime >= 0);
+ assert (sleepTime <= timeout);
+ return sleepTime;
}
/**
}
}
+ // ------------------------------------------------------------------------
+ // Other TWindow constructors ---------------------------------------------
+ // ------------------------------------------------------------------------
+
/**
* Convenience function to spawn a message box.
*
git://git.nikiroo.be / nikiroo-utils.git / blobdiff