UI : computeGeometry is called from Root before drawing if dirty or resized

8 files changed, 71 insertions, 77 deletions

diff --git a/core/src/ch/asynk/gdx/boardgame/ui/Button.java b/core/src/ch/asynk/gdx/boardgame/ui/Button.java
index 488fcfa..7fdc799 100644
--- a/core/src/ch/asynk/gdx/boardgame/ui/Button.java
+++ b/core/src/ch/asynk/gdx/boardgame/ui/Button.java
@@ -41,22 +41,21 @@ public class Button extends Patch
         label.setAlignment(alignment);
     }
 
-    @Override public void computeGeometry(Rectangle area)
+    @Override public void computeGeometry(Rectangle area, boolean resized)
     {
+        label.computeDimensions();
         float dd = 2 * (padding + spacing);
-        label.computeGeometry(area);
         rect.width = label.getWidth() + dd;
         rect.height = label.getHeight() + dd;
-        if (DEBUG_GEOMETRY) System.err.println("  dim " + print(-1));
 
-        super.computeGeometry(area);
-        label.computeGeometry(innerRect);
+        super.computeGeometry(area, resized);
+        label.computeGeometry(innerRect, resized);
     }
 
     @Override public void drawReal(Batch batch)
     {
         super.drawReal(batch);
-        label.drawReal(batch);
+        label.draw(batch);
     }
 
     @Override public void drawDebug(ShapeRenderer shapeRenderer)
diff --git a/core/src/ch/asynk/gdx/boardgame/ui/Container.java b/core/src/ch/asynk/gdx/boardgame/ui/Container.java
index 0a82a67..30b5f20 100644
--- a/core/src/ch/asynk/gdx/boardgame/ui/Container.java
+++ b/core/src/ch/asynk/gdx/boardgame/ui/Container.java
@@ -38,27 +38,19 @@ public class Container extends Element
         }
     }
 
-    @Override public void drip()
+    @Override public void computeGeometry(Rectangle area, boolean resized)
     {
-        super.drip();
-        if (children != null)
-            children.forEach( c -> c.drip() );
-    }
-
-    @Override public void computeGeometry(Rectangle area)
-    {
-        if (children != null) {
-            for(Element e : children) {
-                e.computeGeometry(area);
-                e.clear();
-            }
+        if (dirty || resized) {
+            if (children != null)
+                children.forEach( c -> c.computeGeometry(area, resized) );
+            super.computeGeometry(area, resized);
         }
     }
 
     @Override public void drawReal(Batch batch)
     {
         if (children != null)
-            children.forEach( c -> c.draw(batch, innerRect) );
+            children.forEach( c -> c.draw(batch) );
     }
 
     @Override public void drawDebug(ShapeRenderer shapeRenderer)
diff --git a/core/src/ch/asynk/gdx/boardgame/ui/Element.java b/core/src/ch/asynk/gdx/boardgame/ui/Element.java
index 54d2953..89e28a7 100644
--- a/core/src/ch/asynk/gdx/boardgame/ui/Element.java
+++ b/core/src/ch/asynk/gdx/boardgame/ui/Element.java
@@ -35,7 +35,7 @@ public abstract class Element implements Drawable, Paddable, Positionable, Touch
         this.rect = new Rectangle(0, 0, 0, 0);
         this.innerRect = new Rectangle(0, 0, 0, 0);
         this.x = this.y = 0;
-        taint();
+        this.dirty = true;
     }
 
     @Override public final float getX()         { return rect.x; }
@@ -85,23 +85,15 @@ public abstract class Element implements Drawable, Paddable, Positionable, Touch
         this.dirty = false;
     }
 
-    public void mark()
-    {
-        if (DEBUG_GEOMETRY) print("  mark");
-        this.dirty = true;
-    }
-
-    public void drip()
-    {
-        if (DEBUG_GEOMETRY) print("  drip");
-        this.dirty = true;
-    }
-
     public void taint()
     {
+        if (this.dirty) {
+            if (DEBUG_GEOMETRY) print("  already dirty");
+            return;
+        }
         if (DEBUG_GEOMETRY) print(" taint");
-        mark();
-        if (parent != null) parent.mark();
+        this.dirty = true;
+        if (parent != null) parent.taint();
     }
 
     @Override public void setPosition(float x, float y, float w, float h)
@@ -171,12 +163,10 @@ public abstract class Element implements Drawable, Paddable, Positionable, Touch
        setPosition(x, y, rect.width, rect.height);
     }
 
+    protected void computeDimensions() { }
+
     private void computePosition(Rectangle area)
     {
-        if (area == null) {
-            System.err.println("******** ERROR : computeGeometry(null) check for draw(batch) calls : " + print(-1));
-            return;
-        }
         if (alignment == Alignment.ABSOLUTE) {
             rect.x = x;
             rect.y = y;
@@ -191,27 +181,20 @@ public abstract class Element implements Drawable, Paddable, Positionable, Touch
         if (DEBUG_GEOMETRY) System.err.println("  pos " + print(-1));
     }
 
-    public void computeGeometry(Rectangle area)
+    public void computeGeometry(Rectangle area, boolean resized)
     {
-        computePosition(area);
+        if (dirty || resized) {
+            computeDimensions();
+            computePosition(area);
+            clear();
+        }
     }
 
     public abstract void drawReal(Batch batch);
 
     @Override public void draw(Batch batch)
     {
-        draw(batch, null);
-    }
-
-    public void draw(Batch batch, Rectangle area)
-    {
         if (!visible) return;
-        if (dirty) {
-            if (DEBUG_GEOMETRY) { print("[Geometry"); System.err.println("  --> " + print(-1)); }
-            computeGeometry(area);
-            clear();
-            if (DEBUG_GEOMETRY) System.err.println("Geometry]");
-        }
         drawReal(batch);
     }
 
diff --git a/core/src/ch/asynk/gdx/boardgame/ui/Label.java b/core/src/ch/asynk/gdx/boardgame/ui/Label.java
index 8acb5e5..6129547 100644
--- a/core/src/ch/asynk/gdx/boardgame/ui/Label.java
+++ b/core/src/ch/asynk/gdx/boardgame/ui/Label.java
@@ -53,12 +53,10 @@ public class Label extends Element
         taint();
     }
 
-    @Override public void computeGeometry(Rectangle area)
+    @Override public void computeDimensions()
     {
         this.rect.width = (layout.width + (2 * padding));
         this.rect.height = (layout.height + (2 * padding));
-        if (DEBUG_GEOMETRY) System.err.println("  dim " + print(-1));
-        super.computeGeometry(area);
     }
 
     @Override public void drawReal(Batch batch)
diff --git a/core/src/ch/asynk/gdx/boardgame/ui/List.java b/core/src/ch/asynk/gdx/boardgame/ui/List.java
index b316241..4b0d388 100644
--- a/core/src/ch/asynk/gdx/boardgame/ui/List.java
+++ b/core/src/ch/asynk/gdx/boardgame/ui/List.java
@@ -47,7 +47,7 @@ public class List extends Element
             if (i >= 0 && i < items.size()) {
                 if (idx == null || idx != i) {
                     idx = i;
-                    selected.setPosition(0, getInnerHeight() - ((idx + 1) * itemHeight) + spacing / 2f, getWidth(), itemHeight);
+                    selected.setPosition(0, getHeight() - padding + spacing / 2 - ((idx + 1) * itemHeight), getWidth(), itemHeight);
                     selected.visible = true;
                 }
                 return touched;
@@ -68,10 +68,10 @@ public class List extends Element
     @Override public void translate(float x, float y)
     {
         super.translate(x, y);
-        selected.mark();
+        selected.taint();
     }
 
-    @Override public void computeGeometry(Rectangle area)
+    public void computeDimensions()
     {
         float w = 0f;
         for (Item e: items) {
@@ -81,9 +81,13 @@ public class List extends Element
         itemHeight = (layout.height + spacing);
         rect.width = w + (2 * padding);
         rect.height = (itemHeight * items.size()) + (2 * padding) - spacing;
-        if (DEBUG_GEOMETRY) System.err.println("  dim " + print(-1));
+    }
 
-        super.computeGeometry(area);
+    @Override public void computeGeometry(Rectangle area, boolean resized)
+    {
+        computeDimensions();
+        super.computeGeometry(area, resized);
+        selected.computeGeometry(rect, resized);
     }
 
     @Override public void drawReal(Batch batch)
@@ -94,6 +98,6 @@ public class List extends Element
             font.draw(batch, e.s(), x, y);
             y -= itemHeight;
         }
-        selected.draw(batch, innerRect);
+        selected.draw(batch);
     }
 }
diff --git a/core/src/ch/asynk/gdx/boardgame/ui/Menu.java b/core/src/ch/asynk/gdx/boardgame/ui/Menu.java
index 14c8f2f..b754083 100644
--- a/core/src/ch/asynk/gdx/boardgame/ui/Menu.java
+++ b/core/src/ch/asynk/gdx/boardgame/ui/Menu.java
@@ -66,13 +66,13 @@ public class Menu extends Patch
         taint();
     }
 
-    @Override public void computeGeometry(Rectangle area)
+    @Override public void computeGeometry(Rectangle area, boolean resized)
     {
-        title.computeGeometry(area);
+        title.computeGeometry(area, resized);
         float h = title.getHeight();
         float w = title.getWidth();
         for (Label label : entries) {
-            label.computeGeometry(area);
+            label.computeGeometry(area, resized);
             h += label.getHeight();
             float t = label.getWidth() + entriesOffset;
             if (t > w)
@@ -80,9 +80,8 @@ public class Menu extends Patch
         }
         rect.width = w + (2 * padding);
         rect.height = h + (titleSpacing + (entriesSpacing * (entries.length - 1)) + (2 * padding));
-        if (DEBUG_GEOMETRY) System.err.println("  dim " + print(-1));
 
-        super.computeGeometry(area);
+        super.computeGeometry(area, resized);
 
         float y = getInnerHeight() - title.getHeight();
         title.setPositionClear(0, y, innerRect);
@@ -91,7 +90,6 @@ public class Menu extends Patch
             l.setPositionClear(x + entriesOffset, y - l.getHeight(), innerRect);
             y -= (l.getHeight() + entriesSpacing);
         }
-        if (DEBUG_GEOMETRY) System.err.println("  pos " + print(-1));
     }
 
     public int touched()
@@ -117,9 +115,9 @@ public class Menu extends Patch
     @Override public void drawReal(Batch batch)
     {
         super.drawReal(batch);
-        title.drawReal(batch);
+        title.draw(batch);
         for (Label label : entries) {
-            label.drawReal(batch);
+            label.draw(batch);
         }
     }
 
diff --git a/core/src/ch/asynk/gdx/boardgame/ui/Root.java b/core/src/ch/asynk/gdx/boardgame/ui/Root.java
index 2099cbd..750f574 100644
--- a/core/src/ch/asynk/gdx/boardgame/ui/Root.java
+++ b/core/src/ch/asynk/gdx/boardgame/ui/Root.java
@@ -8,6 +8,7 @@ import ch.asynk.gdx.boardgame.utils.IterableSet;
 public class Root extends Container
 {
     private Element touched;
+    private boolean resized;
 
     public Root(int c)
     {
@@ -28,15 +29,15 @@ public class Root extends Container
     public void resize(float x, float y, float width, float height)
     {
         setPosition(x, y, width, height);
-        drip();
+        resized = true;
     }
 
-    @Override public void computeGeometry(Rectangle area)
+    @Override public void computeGeometry(Rectangle area, boolean resized)
     {
         rect.x = x;
         rect.y = y;
         innerRect.set(getInnerX(), getInnerY(), getInnerWidth(), getInnerHeight());
-        super.computeGeometry(innerRect);
+        super.computeGeometry(innerRect, resized);
     }
 
     public Element touched()
@@ -44,6 +45,15 @@ public class Root extends Container
         return touched;
     }
 
+    @Override public void draw(Batch batch)
+    {
+        if (dirty || resized) {
+            computeGeometry(null, resized);
+            resized = false;
+        }
+        super.draw(batch);
+    }
+
     @Override public Element touch(float x, float y)
     {
         touched = super.touch(x, y);
diff --git a/core/src/ch/asynk/gdx/boardgame/ui/Scrollable.java b/core/src/ch/asynk/gdx/boardgame/ui/Scrollable.java
index e07df0f..c95c7f1 100644
--- a/core/src/ch/asynk/gdx/boardgame/ui/Scrollable.java
+++ b/core/src/ch/asynk/gdx/boardgame/ui/Scrollable.java
@@ -20,9 +20,10 @@ public class Scrollable extends Element
         super();
         this.vScroll = true;
         this.hScroll = false;
-        this.child = child;
         this.scissorIdx = -1;
         this.clip = new Rectangle();
+        this.child = child;
+        child.setParent(this);
     }
 
     public Element getChild() { return child; }
@@ -37,11 +38,20 @@ public class Scrollable extends Element
         return (child.getHeight() + (2 * padding));
     }
 
-    @Override public void computeGeometry(Rectangle area)
+    public void computeDimensions()
+    {
+        child.computeDimensions();
+    }
+
+    @Override public void computeGeometry(Rectangle area, boolean resized)
     {
-        child.computeGeometry(area);
+        if (resized || scissorIdx == -1)
+            setPosition(area.x, area.y, area.width, area.height);
+        child.computeGeometry(clip, resized);
+        clear();
     }
 
+
     @Override public Element touch(float x, float y)
     {
         if (clip.contains(x, y)) {
@@ -88,8 +98,8 @@ public class Scrollable extends Element
     {
         rect.set(x, y, w, h);
         clip.set((x + padding), (y + padding), (w - 2 * padding), (h - 2 * padding));
-        child.setPositionClear(clip.x, clip.y - (child.rect.height - clip.height), innerRect);
         scissorIdx = Scissors.compute(scissorIdx, clip);
+        child.setPositionClear(0, - (child.rect.height - clip.height), clip);
     }
 
     @Override public void drawReal(Batch batch)
@@ -98,7 +108,7 @@ public class Scrollable extends Element
         Rectangle scissor = Scissors.get(scissorIdx, clip);
         HdpiUtils.glScissor((int)scissor.x, (int)scissor.y, (int)scissor.width, (int)scissor.height);
         Gdx.gl.glEnable(GL20.GL_SCISSOR_TEST);
-        child.draw(batch, innerRect);
+        child.draw(batch);
         batch.flush();
         Gdx.gl.glDisable(GL20.GL_SCISSOR_TEST);
     }