From ac8d6be6e5d7658ed6fbaa518cbc1993790126df Mon Sep 17 00:00:00 2001
From: Gabriel Machado <97042217+GabrielBRDeveloper@users.noreply.github.com>
Date: Wed, 24 Jul 2024 15:24:57 -0400
Subject: [PATCH] [core] Implment maxWidth and maxHeight in FrameLayout

-> Implement maxWidth and maxHeight
-> Implement FlowLayout
---
 core/res/ex-layout/main.xml                   | 81 +++++-------------
 .../br/nullexcept/mux/res/LayoutInflater.java |  6 +-
 .../src/br/nullexcept/mux/view/ViewGroup.java | 10 ++-
 .../br/nullexcept/mux/widget/FlowLayout.java  | 84 +++++++++++++++++++
 .../br/nullexcept/mux/widget/FrameLayout.java | 16 ++++
 5 files changed, 135 insertions(+), 62 deletions(-)
 create mode 100644 core/src/br/nullexcept/mux/widget/FlowLayout.java

diff --git a/core/res/ex-layout/main.xml b/core/res/ex-layout/main.xml
index 1569c57..f5e77d2 100644
--- a/core/res/ex-layout/main.xml
+++ b/core/res/ex-layout/main.xml
@@ -1,73 +1,36 @@
 <?xml version="1.0" encoding="UTF-8" ?>
-<LinearLayout
+<FrameLayout
     width="match_parent"
     height="wrap_content"
     paddingBottom="8dp"
     orientation="horizontal"
     padding="10dp"
-    background="#AAA">
+    background="#AAA"
+    gravity="center">
 
   <LinearLayout
+    width="match_parent"
+    height="wrap_content"
+    layoutGravity="center|top"
+    maxWidth="1024dp">
+
+    <Button
       width="match_parent"
       height="wrap_content"
-      orientation="vertical"
-      padding="10dp"
-      background="#555"
-      gravity="center">
-
+      margin="5dp"/>
     <Button
-      width="256dp"
-      height="32dp"
-      margin="5dp"
-      text="OK"/>
-
-    <TextView
-      width="256dp"
-      height="32dp"
-      margin="5dp"
-      text="OK"/>
-
-    <EditText
-      width="256dp"
-      height="32dp"
-      margin="5dp"
-      text="OK"/>
-
-    <Switch
-      margin="5dp"
-      text="OK"/>
-
-    <ImageView
-      width="128dp"
-      height="128dp"
-      margin="5dp"
-      src="@drawable/default_window_icon"
-      text="OK"/>
-
-    <FrameLayout
-      width="256dp"
-      height="256dp"
-      background="#A00">
-      <Button
-        width="128dp"
-        height="128dp"
-        layoutGravity="center|bottom"
-        margin="10dp"/>
-    </FrameLayout>
-
-    <CardLayout
-      width="256dp"
-      height="256dp"
-      marginBottom="90dp"
-      radius="16dp">
-
-      <View
-        width="256dp"
-        height="256dp"
-        background="#000"/>
-
-    </CardLayout>
+      width="match_parent"
+      height="wrap_content"
+      margin="5dp"/>
+    <Button
+      width="match_parent"
+      height="wrap_content"
+      margin="5dp"/>
+    <Button
+      width="match_parent"
+      height="wrap_content"
+      margin="5dp"/>
 
   </LinearLayout>
 
-</LinearLayout>
\ No newline at end of file
+</FrameLayout>
\ No newline at end of file
diff --git a/core/src/br/nullexcept/mux/res/LayoutInflater.java b/core/src/br/nullexcept/mux/res/LayoutInflater.java
index 538b308..b2d1082 100644
--- a/core/src/br/nullexcept/mux/res/LayoutInflater.java
+++ b/core/src/br/nullexcept/mux/res/LayoutInflater.java
@@ -3,7 +3,6 @@
 import br.nullexcept.mux.app.Context;
 import br.nullexcept.mux.lang.ValuedFunction;
 import br.nullexcept.mux.lang.xml.XmlElement;
-import br.nullexcept.mux.view.AttrList;
 import br.nullexcept.mux.view.Gravity;
 import br.nullexcept.mux.view.View;
 import br.nullexcept.mux.view.ViewGroup;
@@ -85,9 +84,13 @@ private ViewGroup.LayoutParams parseLayoutParams(AttributeList attr){
             return result[0];
         };
 
+
         params.width = parseParams.run(width);
         params.height = parseParams.run(height);
 
+        attr.searchDimension("maxWidth", x -> params.maxWidth = x.intValue());
+        attr.searchDimension("maxHeight", x -> params.maxHeight = x.intValue());
+
         return params;
     }
 
@@ -96,6 +99,7 @@ private ViewGroup.LayoutParams parseLayoutParams(AttributeList attr){
         registerView("CardLayout", CardLayout::new);
         registerView("LinearLayout", LinearLayout::new);
         registerView("FrameLayout", FrameLayout::new);
+        registerView("FlowLayout", FlowLayout::new);
         registerView("ScrollView", ScrollView::new);
 
         registerView("ImageView", ImageView::new);
diff --git a/core/src/br/nullexcept/mux/view/ViewGroup.java b/core/src/br/nullexcept/mux/view/ViewGroup.java
index ca49d4c..e293d73 100644
--- a/core/src/br/nullexcept/mux/view/ViewGroup.java
+++ b/core/src/br/nullexcept/mux/view/ViewGroup.java
@@ -45,6 +45,10 @@ protected int measureSpec(int parent, int spec, int wrap, int padding) {
         }
     }
 
+    protected Size onMeasureChild(View child, int width, int height) {
+        return new Size(width,height);
+    }
+
     protected boolean measureChild(View child) {
         LayoutParams params = child.getLayoutParams();
         if (child.getVisibility() == VISIBILITY_GONE) {
@@ -61,8 +65,10 @@ protected boolean measureChild(View child) {
 
         int w = measureSpec(getMeasuredWidth()-getPaddingLeft()-getPaddingRight()-left, params.width, size.width, child.getPaddingLeft() + child.getPaddingRight());
         int h = measureSpec(getMeasuredHeight()-getPaddingTop()-getPaddingBottom()-top, params.height, size.height, child.getPaddingTop() + child.getPaddingBottom());
-        if (w != child.getMeasuredWidth() || h != child.getMeasuredHeight()) {
-            child.onMeasure(w,h);
+
+        Size measured = onMeasureChild(child, w,h);
+        if (measured.width != child.getMeasuredWidth() || measured.height != child.getMeasuredHeight()) {
+            child.onMeasure(measured.width, measured.height);
             return true;
         }
         return false;
diff --git a/core/src/br/nullexcept/mux/widget/FlowLayout.java b/core/src/br/nullexcept/mux/widget/FlowLayout.java
new file mode 100644
index 0000000..12de964
--- /dev/null
+++ b/core/src/br/nullexcept/mux/widget/FlowLayout.java
@@ -0,0 +1,84 @@
+package br.nullexcept.mux.widget;
+
+import br.nullexcept.mux.app.Context;
+import br.nullexcept.mux.graphics.Point;
+import br.nullexcept.mux.res.AttributeList;
+import br.nullexcept.mux.view.Gravity;
+import br.nullexcept.mux.view.View;
+import br.nullexcept.mux.view.ViewGroup;
+
+public class FlowLayout extends ViewGroup {
+    private int dividerSize = 16;
+    public FlowLayout(Context context) {
+        super(context);
+    }
+
+    public FlowLayout(Context context, AttributeList attrs) {
+        super(context, attrs);
+    }
+
+    @Override
+    protected Point getChildLocation(View view) {
+        int width = getMeasuredWidth() - getPaddingLeft() - getPaddingRight();
+        int height = getMeasuredHeight();
+        int y = 0;
+        int x = 0;
+        boolean find = false;
+        int lineCount = 0;
+        int w = 0;
+        int mh = 0;
+        for (int i = 0; i < getChildrenCount(); i++) {
+            View child = getChildAt(i);
+            if (child.getMeasuredWidth() + w > width) {
+                if (find) break;
+                if (lineCount == 0) {
+                    mh = Math.max(mh, child.getMeasuredHeight());
+                    if (child.equals(view)) {
+                        w = child.getMeasuredWidth();
+                        break;
+                    }
+                    y += mh + dividerSize;
+                } else {
+                    y += mh + dividerSize;
+                    i--;
+                }
+
+                x = 0;
+                w = 0;
+                mh = 0;
+                lineCount = 0;
+            } else {
+                if (child.equals(view)) {
+                    find = true;
+                }
+                w += child.getMeasuredWidth() + dividerSize;
+                if (!find){
+                    x += child.getMeasuredWidth() + dividerSize;
+                }
+                mh = Math.max(mh, child.getMeasuredHeight());
+                lineCount++;
+            }
+        }
+
+        int offsetX = Gravity.apply(Gravity.horizontal(getGravity()),width,lineCount == 0 ? w : w - dividerSize);
+        int offsetY = Gravity.apply(Gravity.vertical(getGravity()),mh, view.getMeasuredHeight());
+
+        x += getPaddingLeft() + offsetX;
+        y += getPaddingTop() + offsetY;
+        return new Point(x,y);
+    }
+
+    @Override
+    public void addChild(View view, ViewGroup.LayoutParams params) {
+        LayoutParams newParams = new LayoutParams(params.width,params.height);
+        newParams.from(params);
+        super.addChild(view, newParams);
+    }
+
+    public static class LayoutParams extends ViewGroup.LayoutParams {
+
+        public LayoutParams(int width, int height) {
+            super(width, height);
+        }
+    }
+}
diff --git a/core/src/br/nullexcept/mux/widget/FrameLayout.java b/core/src/br/nullexcept/mux/widget/FrameLayout.java
index 457c772..c7e0581 100644
--- a/core/src/br/nullexcept/mux/widget/FrameLayout.java
+++ b/core/src/br/nullexcept/mux/widget/FrameLayout.java
@@ -66,8 +66,22 @@ public void addChild(View view, ViewGroup.LayoutParams params) {
         super.addChild(view, newParams);
     }
 
+    @Override
+    protected Size onMeasureChild(View child, int width, int height) {
+        LayoutParams params = (LayoutParams) child.getLayoutParams();
+        if (width > params.maxWidth) {
+            width = params.maxWidth;
+        }
+        if (height > params.maxHeight) {
+            height = params.maxHeight;
+        }
+        return super.onMeasureChild(child, width, height);
+    }
+
     public static class LayoutParams extends MarginLayoutParams {
         private int gravity = Gravity.LEFT;
+        public int maxWidth = Integer.MAX_VALUE;
+        public int maxHeight = Integer.MAX_VALUE;
 
         public LayoutParams(int width, int height) {
             super(width, height);
@@ -81,6 +95,8 @@ public void setGravity(int gravity) {
         public void from(ViewGroup.LayoutParams params) {
             if (params instanceof LayoutParams) {
                 this.gravity = ((LayoutParams) params).gravity;
+                this.maxWidth = ((LayoutParams) params).maxWidth;
+                this.maxHeight = ((LayoutParams) params).maxHeight;
             }
             super.from(params);
         }