#18 move to event-driven main loop

[fanfix.git] / src / jexer / TWidget.java

diff --git a/src/jexer/TWidget.java b/src/jexer/TWidget.java
index 4450e52fbe97c094bbbf554021536024f878903f..d292ec1490c938f304e142a565551d8eb6060e74 100644 (file)
--- a/src/jexer/TWidget.java
+++ b/src/jexer/TWidget.java
@@ -32,6 +32,7 @@ import java.io.IOException;
 import java.util.List;
 import java.util.ArrayList;
 
+import jexer.backend.Screen;
 import jexer.bits.ColorTheme;
 import jexer.event.TCommandEvent;
 import jexer.event.TInputEvent;
@@ -39,7 +40,6 @@ import jexer.event.TKeypressEvent;
 import jexer.event.TMenuEvent;
 import jexer.event.TMouseEvent;
 import jexer.event.TResizeEvent;
-import jexer.io.Screen;
 import jexer.menu.TMenu;
 import static jexer.TKeypress.*;
 
@@ -217,6 +217,23 @@ public abstract class TWidget implements Comparable<TWidget> {
         this.height = height;
     }
 
+    /**
+     * Change the dimensions.
+     *
+     * @param x absolute X position of the top-left corner
+     * @param y absolute Y position of the top-left corner
+     * @param width new widget width
+     * @param height new widget height
+     */
+    public final void setDimensions(final int x, final int y, final int width,
+        final int height) {
+
+        setX(x);
+        setY(y);
+        setWidth(width);
+        setHeight(height);
+    }
+
     /**
      * My tab order inside a window or containing widget.
      */
@@ -427,7 +444,10 @@ public abstract class TWidget implements Comparable<TWidget> {
         if (parent == this) {
             return x;
         }
-        if ((parent instanceof TWindow) && !(parent instanceof TMenu)) {
+        if ((parent instanceof TWindow)
+            && !(parent instanceof TMenu)
+            && !(parent instanceof TDesktop)
+        ) {
             // Widgets on a TWindow have (0,0) as their top-left, but this is
             // actually the TWindow's (1,1).
             return parent.getAbsoluteX() + x + 1;
@@ -446,7 +466,10 @@ public abstract class TWidget implements Comparable<TWidget> {
         if (parent == this) {
             return y;
         }
-        if ((parent instanceof TWindow) && !(parent instanceof TMenu)) {
+        if ((parent instanceof TWindow)
+            && !(parent instanceof TMenu)
+            && !(parent instanceof TDesktop)
+        ) {
             // Widgets on a TWindow have (0,0) as their top-left, but this is
             // actually the TWindow's (1,1).
             return parent.getAbsoluteY() + y + 1;
@@ -527,6 +550,13 @@ public abstract class TWidget implements Comparable<TWidget> {
         }
     }
 
+    /**
+     * Repaint the screen on the next update.
+     */
+    public void doRepaint() {
+        window.getApplication().doRepaint();
+    }
+
     // ------------------------------------------------------------------------
     // Constructors -----------------------------------------------------------
     // ------------------------------------------------------------------------
@@ -928,9 +958,15 @@ public abstract class TWidget implements Comparable<TWidget> {
      * @param resize resize event
      */
     public void onResize(final TResizeEvent resize) {
-        // Default: do nothing, pass to children instead
-        for (TWidget widget: children) {
-            widget.onResize(resize);
+        // Default: change my width/height.
+        if (resize.getType() == TResizeEvent.Type.WIDGET) {
+            width = resize.getWidth();
+            height = resize.getHeight();
+        } else {
+            // Let children see the screen resize
+            for (TWidget widget: children) {
+                widget.onResize(resize);
+            }
         }
     }
 
@@ -961,7 +997,8 @@ public abstract class TWidget implements Comparable<TWidget> {
 
     /**
      * Method that subclasses can override to do processing when the UI is
-     * idle.
+     * idle.  Note that repainting is NOT assumed.  To get a refresh after
+     * onIdle, call doRepaint().
      */
     public void onIdle() {
         // Default: do nothing, pass to children instead
@@ -1200,6 +1237,23 @@ public abstract class TWidget implements Comparable<TWidget> {
         return new TText(this, text, x, y, width, height, "ttext");
     }
 
+    /**
+     * Convenience function to add an editable text area box to this
+     * container/window.
+     *
+     * @param text text on the screen
+     * @param x column relative to parent
+     * @param y row relative to parent
+     * @param width width of text area
+     * @param height height of text area
+     * @return the new text box
+     */
+    public final TEditorWidget addEditor(final String text, final int x,
+        final int y, final int width, final int height) {
+
+        return new TEditorWidget(this, text, x, y, width, height);
+    }
+
     /**
      * Convenience function to spawn a message box.
      *