loading bar view added

src/main/java/ru/touchin/roboswag/components/views/MaterialLoadingBar.java

@@ -0,0 +1,110 @@
+/*
+ *  Copyright (c) 2015 RoboSwag (Gavriil Sitnikov, Vsevolod Ivanov)
+ *
+ *  This file is part of RoboSwag library.
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *  http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ *
+ */
+
+package ru.touchin.roboswag.components.views;
+
+import android.content.Context;
+import android.content.res.TypedArray;
+import android.os.Build;
+import android.support.annotation.NonNull;
+import android.support.annotation.Nullable;
+import android.util.AttributeSet;
+import android.util.TypedValue;
+import android.widget.ImageView;
+
+import ru.touchin.roboswag.components.R;
+import ru.touchin.roboswag.components.utils.UiUtils;
+
+/**
+ * Created by Ilia Kurtov on 07/12/2016.
+ * Simple endless progress bar view in material (round circle) style.
+ * It is able to setup size, stroke width and color.
+ * See MaterialLoadingBar Attributes:
+ * R.styleable#MaterialLoadingBar_size
+ * R.styleable#MaterialLoadingBar_strokeWidth
+ * R.styleable#MaterialLoadingBar_color
+ * Use
+ * R.styleable#MaterialLoadingBar_materialLoadingBarStyle
+ * to set default style of MaterialLoadingBar in your Theme.
+ * Sample:
+ * <style name="MyAppLoadingBar">
+ * <item name="strokeWidth">3dp</item>
+ * <item name="color">@android:color/black</item>
+ * <item name="size">24dp</item>
+ * </style>
+ * <style name="AppTheme" parent="Theme.AppCompat.NoActionBar">
+ * <item name="materialLoadingBarStyle">@style/MyAppLoadingBar</item>
+ * </style>
+ */
+public class MaterialLoadingBar extends ImageView {
+
+    private static int getPrimaryColor(@NonNull final Context context) {
+        final int colorAttr;
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
+            colorAttr = android.R.attr.colorPrimary;
+        } else {
+            colorAttr = context.getResources().getIdentifier("colorPrimary", "attr", context.getPackageName());
+        }
+        final TypedValue outValue = new TypedValue();
+        context.getTheme().resolveAttribute(colorAttr, outValue, true);
+        return outValue.data;
+    }
+
+    private MaterialProgressDrawable progressDrawable;
+
+    public MaterialLoadingBar(@NonNull final Context context) {
+        this(context, null);
+    }
+
+    public MaterialLoadingBar(@NonNull final Context context, @Nullable final AttributeSet attrs) {
+        this(context, attrs, R.attr.materialLoadingBarStyle);
+    }
+
+    public MaterialLoadingBar(@NonNull final Context context, @Nullable final AttributeSet attrs, final int defStyleAttr) {
+        super(context, attrs, defStyleAttr);
+
+        final TypedArray typedArray = context.obtainStyledAttributes(attrs, R.styleable.MaterialLoadingBar,
+                defStyleAttr,
+                0);
+        final int size = (int) typedArray.getDimension(R.styleable.MaterialLoadingBar_size, UiUtils.OfMetrics.dpToPixels(context, 48));
+        final int color = typedArray.getColor(R.styleable.MaterialLoadingBar_color, getPrimaryColor(context));
+        final float strokeWidth = typedArray.getDimension(R.styleable.MaterialLoadingBar_strokeWidth,
+                UiUtils.OfMetrics.dpToPixels(context, 4));
+        typedArray.recycle();
+
+        progressDrawable = new MaterialProgressDrawable(context, size);
+        progressDrawable.setColor(color);
+        progressDrawable.setStrokeWidth(strokeWidth);
+        setScaleType(ScaleType.CENTER);
+        setImageDrawable(progressDrawable);
+    }
+
+    @Override
+    protected void onAttachedToWindow() {
+        super.onAttachedToWindow();
+        progressDrawable.start();
+    }
+
+    @Override
+    protected void onDetachedFromWindow() {
+        progressDrawable.stop();
+        super.onDetachedFromWindow();
+    }
+
+}

src/main/java/ru/touchin/roboswag/components/views/MaterialProgressDrawable.java

@@ -46,6 +46,7 @@ public class MaterialProgressDrawable extends Drawable implements Runnable, Anim
     private static final float DEFAULT_STROKE_WIDTH_DP = 4.5f;
     private static final Parameters DEFAULT_PARAMETERS = new Parameters(20, 270, 4, 12, 4, 8);
 
+    private final int size;
     @NonNull
     private final Paint paint;
     @NonNull
@@ -58,14 +59,29 @@ public class MaterialProgressDrawable extends Drawable implements Runnable, Anim
     private boolean running;
 
     public MaterialProgressDrawable(@NonNull final Context context) {
+        this(context, -1);
+    }
+
+    public MaterialProgressDrawable(@NonNull final Context context, final int size) {
         super();
 
+        this.size = size;
         paint = new Paint(Paint.ANTI_ALIAS_FLAG);
         paint.setStyle(Paint.Style.STROKE);
         paint.setStrokeWidth(UiUtils.OfMetrics.dpToPixels(context, DEFAULT_STROKE_WIDTH_DP));
         paint.setColor(Color.BLACK);
     }
 
+    @Override
+    public int getIntrinsicWidth() {
+        return size;
+    }
+
+    @Override
+    public int getIntrinsicHeight() {
+        return size;
+    }
+
     /**
      * Returns width of arc.
      *

src/main/res/values/attrs.xml

@@ -26,4 +26,11 @@
         <attr name="wrapToContent" format="boolean" />
     </declare-styleable>
 
+    <declare-styleable name="MaterialLoadingBar">
+        <attr name="strokeWidth" format="dimension"/>
+        <attr name="color" format="color"/>
+        <attr name="size" format="dimension"/>
+        <attr name="materialLoadingBarStyle" format="reference"/>
+    </declare-styleable>
+
 </resources>