set text size in Snackbar

lib/src/main/java/com/nispok/snackbar/DisplayCompat.java

@@ -1,7 +1,12 @@
 package com.nispok.snackbar;
 
+import android.app.Activity;
+import android.content.Context;
+import android.content.res.Resources;
 import android.graphics.Point;
 import android.os.Build;
+import android.util.DisplayMetrics;
+import android.util.TypedValue;
 import android.view.Display;
 
 class DisplayCompat {
@@ -30,4 +35,20 @@ public static void getSize(Display display, Point outSize) {
     public static void getRealSize(Display display, Point outSize) {
         IMPL.getRealSize(display, outSize);
     }
+
+    public static int getWidthFromPercentage(Activity targetActivity, Float mMaxWidthPercentage) {
+        Display display = targetActivity.getWindowManager().getDefaultDisplay();
+        Point dispSize = new Point();
+        getRealSize(display, dispSize);
+
+        return (int) (dispSize.x * mMaxWidthPercentage);
+    }
+
+    public static int convertDpToPixels(Context context, int dp){
+        Resources resources = context.getResources();
+        DisplayMetrics metrics = resources.getDisplayMetrics();
+        int px = (int)TypedValue.applyDimension(
+                TypedValue.COMPLEX_UNIT_DIP, dp, metrics);
+        return px;
+    }
 }

lib/src/main/java/com/nispok/snackbar/Snackbar.java

@@ -15,6 +15,7 @@
 import android.support.annotation.DrawableRes;
 import android.support.annotation.StringRes;
 import android.text.TextUtils;
+import android.util.TypedValue;
 import android.view.*;
 import android.view.animation.Animation;
 import android.view.animation.AnimationUtils;
@@ -90,6 +91,7 @@ public int getLayoutGravity () {
     private boolean mShouldDismissOnActionClicked = true;
     private EventListener mEventListener;
     private Typeface mTextTypeface;
+    private Float mTextSize = null;
     private Typeface mActionTypeface;
     private boolean mIsShowing = false;
     private boolean mCanSwipeToDismiss = true;
@@ -467,6 +469,41 @@ public Snackbar textTypeface(Typeface typeface) {
         return this;
     }
 
+    /**
+     * Use a specific text size for this Snackbar's text
+     *
+     * mTextSize = size;
+     * @return
+     */
+    public Snackbar textSize(float size) {
+        mTextSize = size;
+        return this;
+    }
+
+    /**
+     * Set the default text size to a given unit and value.  See {@link
+     * android.util.TypedValue} for the possible dimension units.
+     *
+     * @param unit The desired dimension unit.
+     * @param size The desired size in the given units.
+     *
+     * @attr ref android.R.styleable#TextView_textSize
+     */
+    public Snackbar textSize(int unit, float size) {
+        Context c = getContext();
+        Resources r;
+
+        if (c == null)
+            r = Resources.getSystem();
+        else
+            r = c.getResources();
+
+        textSize(TypedValue.applyDimension(
+                unit, size, r.getDisplayMetrics()));
+
+        return this;
+    }
+
     /**
      * Use a custom typeface for this Snackbar's action label
      *
@@ -536,15 +573,26 @@ private MarginLayoutParams init(Context context, Activity targetActivity, ViewGr
             GradientDrawable bg = (GradientDrawable) layout.getBackground();
             bg.setColor(mColor);
 
+            float fontScaleFactor = 1.0f; final int defaultTextSizeDp = 14;
+            final int defaultTextSizePx = DisplayCompat.convertDpToPixels(targetActivity, defaultTextSizeDp);
+            if (mTextSize != null && mTextSize > defaultTextSizePx)
+                fontScaleFactor = mTextSize/defaultTextSizePx;
+
             params = createMarginLayoutParams(
-                    parent, FrameLayout.LayoutParams.WRAP_CONTENT, dpToPx(mType.getMaxHeight(), scale), mPosition);
+                    parent, FrameLayout.LayoutParams.WRAP_CONTENT,
+                    dpToPx(
+                        mTextSize != null ? (int)(mType.getMaxHeight() * fontScaleFactor ) : mType.getMaxHeight(),
+                        scale),
+                    mPosition);
         }
 
         if (mDrawable != mUndefinedDrawable)
             setBackgroundDrawable(layout, res.getDrawable(mDrawable));
 
         TextView snackbarText = (TextView) layout.findViewById(R.id.sb__text);
         snackbarText.setText(mText);
+        if (mTextSize != null)
+            snackbarText.setTextSize(mTextSize);
         snackbarText.setTypeface(mTextTypeface);
 
         if (mTextColor != mUndefinedColor) {
@@ -556,6 +604,8 @@ private MarginLayoutParams init(Context context, Activity targetActivity, ViewGr
         TextView snackbarAction = (TextView) layout.findViewById(R.id.sb__action);
         if (!TextUtils.isEmpty(mActionLabel)) {
             requestLayout();
+            if (mTextSize != null)
+                snackbarAction.setTextSize(mTextSize);
             snackbarAction.setText(mActionLabel);
             snackbarAction.setTypeface(mActionTypeface);
 

lib/src/main/res/layout/sb__template.xml

@@ -18,7 +18,8 @@
             android:id="@+id/sb__text"
             style="@style/Snackbar.Text"
             android:layout_width="match_parent"
-            android:layout_height="wrap_content"
+            android:layout_height="match_parent"
+            android:gravity="center_vertical"
             android:ellipsize="end"
             android:layout_toLeftOf="@id/sb__action"
             />