+++ /dev/null
-package com.googlecode.lanterna.gui2;
-
-import com.googlecode.lanterna.TerminalPosition;
-import com.googlecode.lanterna.TerminalSize;
-
-import java.util.List;
-
-/**
- * The default window manager implementation used by Lanterna. New windows will be generally added in a tiled manner,
- * starting in the top-left corner and moving down-right as new windows are added. By using the various window hints
- * that are available you have some control over how the window manager will place and size the windows.
- *
- * @author Martin
- */
-public class DefaultWindowManager implements WindowManager {
-
- private final WindowDecorationRenderer windowDecorationRenderer;
- private TerminalSize lastKnownScreenSize;
-
- /**
- * Default constructor, will create a window manager that uses {@code DefaultWindowDecorationRenderer} for drawing
- * window decorations. Any size calculations done before the text GUI has actually been started and displayed on
- * the terminal will assume the terminal size is 80x24.
- */
- public DefaultWindowManager() {
- this(new DefaultWindowDecorationRenderer());
- }
-
- /**
- * Creates a new {@code DefaultWindowManager} with a specific window decoration renderer. Any size calculations done
- * before the text GUI has actually been started and displayed on the terminal will assume the terminal size is
- * 80x24.
- *
- * @param windowDecorationRenderer Window decoration renderer to use when drawing windows
- */
- public DefaultWindowManager(WindowDecorationRenderer windowDecorationRenderer) {
- this(windowDecorationRenderer, null);
- }
-
- /**
- * Creates a new {@code DefaultWindowManager} using a {@code DefaultWindowDecorationRenderer} for drawing window
- * decorations. Any size calculations done before the text GUI has actually been started and displayed on the
- * terminal will use the size passed in with the {@code initialScreenSize} parameter
- *
- * @param initialScreenSize Size to assume the terminal has until the text GUI is started and can be notified of the
- * correct size
- */
- public DefaultWindowManager(TerminalSize initialScreenSize) {
- this(new DefaultWindowDecorationRenderer(), initialScreenSize);
- }
-
- /**
- * Creates a new {@code DefaultWindowManager} using a specified {@code windowDecorationRenderer} for drawing window
- * decorations. Any size calculations done before the text GUI has actually been started and displayed on the
- * terminal will use the size passed in with the {@code initialScreenSize} parameter
- *
- * @param windowDecorationRenderer Window decoration renderer to use when drawing windows
- * @param initialScreenSize Size to assume the terminal has until the text GUI is started and can be notified of the
- * correct size
- */
- public DefaultWindowManager(WindowDecorationRenderer windowDecorationRenderer, TerminalSize initialScreenSize) {
- this.windowDecorationRenderer = windowDecorationRenderer;
- if(initialScreenSize != null) {
- this.lastKnownScreenSize = initialScreenSize;
- }
- else {
- this.lastKnownScreenSize = new TerminalSize(80, 24);
- }
- }
-
- @Override
- public boolean isInvalid() {
- return false;
- }
-
- @Override
- public WindowDecorationRenderer getWindowDecorationRenderer(Window window) {
- if(window.getHints().contains(Window.Hint.NO_DECORATIONS)) {
- return new EmptyWindowDecorationRenderer();
- }
- return windowDecorationRenderer;
- }
-
- @Override
- public void onAdded(WindowBasedTextGUI textGUI, Window window, List<Window> allWindows) {
- WindowDecorationRenderer decorationRenderer = getWindowDecorationRenderer(window);
- TerminalSize expectedDecoratedSize = decorationRenderer.getDecoratedSize(window, window.getPreferredSize());
- window.setDecoratedSize(expectedDecoratedSize);
-
- if(window.getHints().contains(Window.Hint.FIXED_POSITION)) {
- //Don't place the window, assume the position is already set
- }
- else if(allWindows.isEmpty()) {
- window.setPosition(TerminalPosition.OFFSET_1x1);
- }
- else if(window.getHints().contains(Window.Hint.CENTERED)) {
- int left = (lastKnownScreenSize.getColumns() - expectedDecoratedSize.getColumns()) / 2;
- int top = (lastKnownScreenSize.getRows() - expectedDecoratedSize.getRows()) / 2;
- window.setPosition(new TerminalPosition(left, top));
- }
- else {
- TerminalPosition nextPosition = allWindows.get(allWindows.size() - 1).getPosition().withRelative(2, 1);
- if(nextPosition.getColumn() + expectedDecoratedSize.getColumns() > lastKnownScreenSize.getColumns() ||
- nextPosition.getRow() + expectedDecoratedSize.getRows() > lastKnownScreenSize.getRows()) {
- nextPosition = TerminalPosition.OFFSET_1x1;
- }
- window.setPosition(nextPosition);
- }
-
- // Finally, run through the usual calculations so the window manager's usual prepare method can have it's say
- prepareWindow(lastKnownScreenSize, window);
- }
-
- @Override
- public void onRemoved(WindowBasedTextGUI textGUI, Window window, List<Window> allWindows) {
- //NOP
- }
-
- @Override
- public void prepareWindows(WindowBasedTextGUI textGUI, List<Window> allWindows, TerminalSize screenSize) {
- this.lastKnownScreenSize = screenSize;
- for(Window window: allWindows) {
- prepareWindow(screenSize, window);
- }
- }
-
- /**
- * Called by {@link DefaultWindowManager} when iterating through all windows to decide their size and position. If
- * you override {@link DefaultWindowManager} to add your own logic to how windows are placed on the screen, you can
- * override this method and selectively choose which window to interfere with. Note that the two key properties that
- * are read by the GUI system after preparing all windows are the position and decorated size. Your custom
- * implementation should set these two fields directly on the window. You can infer the decorated size from the
- * content size by using the window decoration renderer that is attached to the window manager.
- *
- * @param screenSize Size of the terminal that is available to draw on
- * @param window Window to prepare decorated size and position for
- */
- protected void prepareWindow(TerminalSize screenSize, Window window) {
- WindowDecorationRenderer decorationRenderer = getWindowDecorationRenderer(window);
- TerminalSize contentAreaSize;
- if(window.getHints().contains(Window.Hint.FIXED_SIZE)) {
- contentAreaSize = window.getSize();
- }
- else {
- contentAreaSize = window.getPreferredSize();
- }
- TerminalSize size = decorationRenderer.getDecoratedSize(window, contentAreaSize);
- TerminalPosition position = window.getPosition();
-
- if(window.getHints().contains(Window.Hint.FULL_SCREEN)) {
- position = TerminalPosition.TOP_LEFT_CORNER;
- size = screenSize;
- }
- else if(window.getHints().contains(Window.Hint.EXPANDED)) {
- position = TerminalPosition.OFFSET_1x1;
- size = screenSize.withRelative(
- -Math.min(4, screenSize.getColumns()),
- -Math.min(3, screenSize.getRows()));
- if(!size.equals(window.getDecoratedSize())) {
- window.invalidate();
- }
- }
- else if(window.getHints().contains(Window.Hint.FIT_TERMINAL_WINDOW) ||
- window.getHints().contains(Window.Hint.CENTERED)) {
- //If the window is too big for the terminal, move it up towards 0x0 and if that's not enough then shrink
- //it instead
- while(position.getRow() > 0 && position.getRow() + size.getRows() > screenSize.getRows()) {
- position = position.withRelativeRow(-1);
- }
- while(position.getColumn() > 0 && position.getColumn() + size.getColumns() > screenSize.getColumns()) {
- position = position.withRelativeColumn(-1);
- }
- if(position.getRow() + size.getRows() > screenSize.getRows()) {
- size = size.withRows(screenSize.getRows() - position.getRow());
- }
- if(position.getColumn() + size.getColumns() > screenSize.getColumns()) {
- size = size.withColumns(screenSize.getColumns() - position.getColumn());
- }
- if(window.getHints().contains(Window.Hint.CENTERED)) {
- int left = (lastKnownScreenSize.getColumns() - size.getColumns()) / 2;
- int top = (lastKnownScreenSize.getRows() - size.getRows()) / 2;
- position = new TerminalPosition(left, top);
- }
- }
-
- window.setPosition(position);
- window.setDecoratedSize(size);
- }
-}
git://git.nikiroo.be / jvcard.git / blobdiff