add ui/Menu

1 files changed, 126 insertions, 0 deletions

diff --git a/core/src/ch/asynk/gdx/tabletop/ui/Menu.java b/core/src/ch/asynk/gdx/tabletop/ui/Menu.java
new file mode 100644
index 0000000..38a15dd
--- /dev/null
+++ b/core/src/ch/asynk/gdx/tabletop/ui/Menu.java
@@ -0,0 +1,126 @@
+package ch.asynk.gdx.tabletop.ui;
+
+import com.badlogic.gdx.graphics.g2d.Batch;
+import com.badlogic.gdx.graphics.g2d.NinePatch;
+import com.badlogic.gdx.graphics.g2d.BitmapFont;
+
+public class Menu extends Patch
+{
+    private Label title;
+    private Label[] entries;
+    private Integer touchedItem;
+
+    private int entriesOffset;      // horizontal offset
+    private int titleSpacing;       // between title and entries
+    private int entriesSpacing;     // between entries
+
+    public Menu(BitmapFont font, NinePatch patch, String title, String[] entries)
+    {
+        super(patch);
+        this.touchedItem = null;
+        setTitle(font, title);
+        setEntries(font, entries);
+    }
+
+    public void setTitle(BitmapFont font, String title)
+    {
+        this.title = new Label(font);
+        this.title.write(title);
+        this.tainted = true;
+    }
+
+    public void setEntries(BitmapFont font, String[] entries)
+    {
+        this.entries = new Label[entries.length];
+        for (int i = 0; i < entries.length; i++) {
+            Label l = new Label(font);
+            l.write(entries[i]);
+            this.entries[i] = l;
+        }
+        this.tainted = true;
+    }
+
+    public void setLabelsOffset(int entriesOffset)
+    {
+        this.entriesOffset = entriesOffset;
+        this.tainted = true;
+    }
+
+    public void setPaddings(int titlePadding, int labelPadding)
+    {
+        this.title.setPadding(titlePadding);
+        for (Label label : entries) {
+            label.setPadding(labelPadding);
+        }
+        this.tainted = true;
+    }
+
+    public void setSpacings(int titleSpacing, int entriesSpacing)
+    {
+        this.titleSpacing = titleSpacing;
+        this.entriesSpacing = entriesSpacing;
+        this.tainted = true;
+    }
+
+    @Override public void computeGeometry()
+    {
+        title.computeGeometry();
+        float h = title.getHeight();
+        float w = title.getWidth();
+        for (Label label : entries) {
+            label.computeGeometry();
+            h += label.getHeight();
+            float t = label.getWidth() + entriesOffset;
+            if (t > w)
+                w = t;
+        }
+        h += (titleSpacing + (entriesSpacing * (entries.length - 1)) + (2 * padding));
+        w += (2 * padding);
+
+        rect.width = w;
+        rect.height = h;
+        super.computeGeometry();
+
+        float x = getInnerX();
+        float y = getInnerY();
+
+        // setPosition() will trigger computeGeometry() from within draw()
+        for (int i = entries.length - 1; i >= 0; i--) {
+            entries[i].setPosition(x + entriesOffset, y);
+            y += entries[i].getHeight() + entriesSpacing;
+        }
+        y -= entriesSpacing;
+        y += titleSpacing;
+        title.setPosition(x, y);
+    }
+
+    public Integer touched()
+    {
+        return touchedItem;
+    }
+
+    @Override public boolean touch(float x, float y)
+    {
+        touchedItem = null;
+        if (super.touch(x, y)) {
+            for (int i = 0; i < entries.length; i++) {
+                if (entries[i].touch(x, y)) {
+                    touchedItem = i;
+                    return true;
+                }
+            }
+        }
+        return false;
+    }
+
+    @Override public void draw(Batch batch)
+    {
+        if (!visible) return;
+        if (tainted) computeGeometry();
+        super.draw(batch);
+        title.draw(batch);
+        for (Label label : entries) {
+            label.draw(batch);
+        }
+    }
+}