+ * @return the Backend
+ */
+ public final Backend getBackend() {
+ return backend;
+ }
+
+ /**
+ * Get the Screen.
+ *
+ * @return the Screen
+ */
+ public final Screen getScreen() {
+ if (backend instanceof TWindowBackend) {
+ // We are being rendered to a TWindow. We can't use its
+ // getScreen() method because that is how it is rendering to a
+ // hardware backend somewhere. Instead use its getOtherScreen()
+ // method.
+ return ((TWindowBackend) backend).getOtherScreen();
+ } else {
+ return backend.getScreen();
+ }
+ }
+
+ /**
+ * Get the color theme.
+ *
+ * @return the theme
+ */
+ public final ColorTheme getTheme() {
+ return theme;
+ }
+
+ /**
+ * Repaint the screen on the next update.
+ */
+ public void doRepaint() {
+ repaint = true;
+ wakeEventHandler();
+ }
+
+ /**
+ * Get Y coordinate of the top edge of the desktop.
+ *
+ * @return Y coordinate of the top edge of the desktop
+ */
+ public final int getDesktopTop() {
+ return desktopTop;
+ }
+
+ /**
+ * Get Y coordinate of the bottom edge of the desktop.
+ *
+ * @return Y coordinate of the bottom edge of the desktop
+ */
+ public final int getDesktopBottom() {
+ return desktopBottom;
+ }
+
+ /**
+ * 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;
+ }
+
+ /**
+ * Get the current active window.
+ *
+ * @return the active window, or null if it is not set
+ */
+ public final TWindow getActiveWindow() {
+ return activeWindow;
+ }
+
+ /**
+ * Get a (shallow) copy of the window list.
+ *
+ * @return a copy of the list of windows for this application
+ */
+ public final List<TWindow> getAllWindows() {
+ List<TWindow> result = new ArrayList<TWindow>();
+ result.addAll(windows);
+ return result;
+ }
+
+ /**
+ * Get focusFollowsMouse flag.
+ *
+ * @return true if focus follows mouse: windows automatically raised if
+ * the mouse passes over them
+ */
+ public boolean getFocusFollowsMouse() {
+ return focusFollowsMouse;
+ }
+
+ /**
+ * Set focusFollowsMouse flag.
+ *
+ * @param focusFollowsMouse if true, focus follows mouse: windows
+ * automatically raised if the mouse passes over them
+ */
+ public void setFocusFollowsMouse(final boolean focusFollowsMouse) {
+ this.focusFollowsMouse = focusFollowsMouse;
+ }
+
+ // ------------------------------------------------------------------------
+ // Screen refresh loop ----------------------------------------------------
+ // ------------------------------------------------------------------------
+
+ /**
+ * Invert the cell color at a position. This is used to track the mouse.
+ *
+ * @param x column position
+ * @param y row position
+ */
+ private void invertCell(final int x, final int y) {
+ if (debugThreads) {
+ System.err.printf("%d %s invertCell() %d %d\n",
+ System.currentTimeMillis(), Thread.currentThread(), x, y);
+ }
+ Cell cell = getScreen().getCharXY(x, y);
+ if (cell.isImage()) {
+ cell.invertImage();
+ } else {
+ if (cell.getForeColorRGB() < 0) {
+ cell.setForeColor(cell.getForeColor().invert());
+ } else {
+ cell.setForeColorRGB(cell.getForeColorRGB() ^ 0x00ffffff);
+ }
+ if (cell.getBackColorRGB() < 0) {
+ cell.setBackColor(cell.getBackColor().invert());
+ } else {
+ cell.setBackColorRGB(cell.getBackColorRGB() ^ 0x00ffffff);
+ }
+ }
+ getScreen().putCharXY(x, y, cell);
+ }
+
+ /**
+ * Draw everything.