From 4714a9e43a5d8d71da34dfe65d13dce80780acbb Mon Sep 17 00:00:00 2001
From: piemmm <ian@prowl.org>
Date: Fri, 10 Dec 2021 23:23:40 +0000
Subject: [PATCH] Add drop shadow support

---
 .../es/dmoral/toastysample/MainActivity.java  |  9 +++
 app/src/main/res/layout/activity_main.xml     | 19 +++++--
 app/src/main/res/values/strings.xml           |  2 +
 .../java/es/dmoral/toasty/ShadowOptions.java  | 56 +++++++++++++++++++
 .../main/java/es/dmoral/toasty/Toasty.java    | 20 ++++++-
 5 files changed, 101 insertions(+), 5 deletions(-)
 create mode 100644 toasty/src/main/java/es/dmoral/toasty/ShadowOptions.java

diff --git a/app/src/main/java/es/dmoral/toastysample/MainActivity.java b/app/src/main/java/es/dmoral/toastysample/MainActivity.java
index 6db2fd2..301284c 100644
--- a/app/src/main/java/es/dmoral/toastysample/MainActivity.java
+++ b/app/src/main/java/es/dmoral/toastysample/MainActivity.java
@@ -9,6 +9,7 @@
 import android.text.style.StyleSpan;
 import android.view.View;
 
+import es.dmoral.toasty.ShadowOptions;
 import es.dmoral.toasty.Toasty;
 
 import static android.graphics.Typeface.BOLD_ITALIC;
@@ -60,6 +61,14 @@ public void onClick(View view) {
                 Toasty.warning(MainActivity.this, R.string.warning_message, Toasty.LENGTH_SHORT, true).show();
             }
         });
+        findViewById(R.id.button_shadow_toast).setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View view) {
+                Toasty.Config.getInstance().setShadow(ShadowOptions.DROP_SHADOW).apply();
+                Toasty.warning(MainActivity.this, R.string.shadow_message, Toasty.LENGTH_SHORT, true).show();
+                Toasty.Config.reset();
+            }
+        });
         findViewById(R.id.button_normal_toast_wo_icon).setOnClickListener(new View.OnClickListener() {
             @Override
             public void onClick(View view) {
diff --git a/app/src/main/res/layout/activity_main.xml b/app/src/main/res/layout/activity_main.xml
index 79238be..a57af3b 100644
--- a/app/src/main/res/layout/activity_main.xml
+++ b/app/src/main/res/layout/activity_main.xml
@@ -59,21 +59,32 @@
             android:layout_alignParentEnd="true" />
 
         <Button
-            android:text="@string/warning_toast"
+            android:id="@+id/button_warning_toast"
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
             android:layout_below="@+id/button_info_toast_with_formatting"
-            android:layout_alignParentLeft="true"
             android:layout_alignParentStart="true"
+            android:layout_alignParentLeft="true"
+            android:layout_alignParentEnd="true"
             android:layout_alignParentRight="true"
+            android:text="@string/warning_toast" />
+
+        <Button
+            android:id="@+id/button_shadow_toast"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_below="@+id/button_warning_toast"
+            android:layout_alignParentStart="true"
+            android:layout_alignParentLeft="true"
             android:layout_alignParentEnd="true"
-            android:id="@+id/button_warning_toast" />
+            android:layout_alignParentRight="true"
+            android:text="@string/shadow_toast" />
 
         <Button
             android:text="@string/normal_toast_without_icon"
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
-            android:layout_below="@+id/button_warning_toast"
+            android:layout_below="@+id/button_shadow_toast"
             android:layout_alignParentLeft="true"
             android:layout_alignParentStart="true"
             android:id="@+id/button_normal_toast_wo_icon"
diff --git a/app/src/main/res/values/strings.xml b/app/src/main/res/values/strings.xml
index bebe20f..a012435 100644
--- a/app/src/main/res/values/strings.xml
+++ b/app/src/main/res/values/strings.xml
@@ -3,6 +3,7 @@
     <string name="normal_toast_with_icon">NORMAL TOAST (WITH ICON)</string>
     <string name="normal_toast_without_icon">NORMAL TOAST (WITHOUT ICON)</string>
     <string name="warning_toast">WARNING TOAST</string>
+    <string name="shadow_toast">DROP SHADOW TOAST</string>
     <string name="info_toast">INFO TOAST</string>
     <string name="info_toast_with_formatting">INFO TOAST WITH FORMATTING</string>
     <string name="error_toast">ERROR TOAST</string>
@@ -13,6 +14,7 @@
     <string name="success_message">Success!</string>
     <string name="info_message">Here is some info for you.</string>
     <string name="warning_message">Beware of the dog.</string>
+    <string name="shadow_message">This has a drop shadow.</string>
     <string name="normal_message_without_icon">Normal toast w/o icon</string>
     <string name="normal_message_with_icon">Normal toast w/ icon</string>
     <string name="custom_message">sudo kill -9 everyone</string>
diff --git a/toasty/src/main/java/es/dmoral/toasty/ShadowOptions.java b/toasty/src/main/java/es/dmoral/toasty/ShadowOptions.java
new file mode 100644
index 0000000..767170f
--- /dev/null
+++ b/toasty/src/main/java/es/dmoral/toasty/ShadowOptions.java
@@ -0,0 +1,56 @@
+package es.dmoral.toasty;
+
+import android.graphics.Color;
+
+import androidx.annotation.CheckResult;
+
+/**
+ * Provide a simple way to configure shadows for toast texts
+ */
+public class ShadowOptions {
+
+    /**
+     * No shadow at all
+     */
+    public static ShadowOptions NONE = new ShadowOptions(0,0,0,0);
+
+    /**
+     * A drop shadow suitable far from the text to aid legibility
+     */
+    public static ShadowOptions DROP_SHADOW = new ShadowOptions(8,5,5,Color.BLACK);
+
+    /**
+     * An outer 'glow'
+     */
+    public static ShadowOptions OUTER_GLOW = new ShadowOptions(3,0,0,Color.WHITE);
+
+    private int radius, dx, dy, color;
+
+    public ShadowOptions(int radius, int dx, int dy, int color) {
+        this.radius = radius;
+        this.dx = dx;
+        this.dy = dy;
+        this.color = color;
+    }
+
+    @CheckResult
+    public int getColor() {
+        return color;
+    }
+
+    @CheckResult
+    public int getDx() {
+        return dx;
+    }
+
+    @CheckResult
+    public int getDy() {
+        return dy;
+    }
+
+    @CheckResult
+    public int getRadius() {
+        return radius;
+    }
+
+}
diff --git a/toasty/src/main/java/es/dmoral/toasty/Toasty.java b/toasty/src/main/java/es/dmoral/toasty/Toasty.java
index 8a09fba..182c9fa 100644
--- a/toasty/src/main/java/es/dmoral/toasty/Toasty.java
+++ b/toasty/src/main/java/es/dmoral/toasty/Toasty.java
@@ -50,6 +50,7 @@ public class Toasty {
     private static int yOffset = -1;
     private static boolean supportDarkTheme = true;
     private static boolean isRTL = false;
+    private static ShadowOptions shadowOptions = ShadowOptions.NONE;
 
     private static Toast lastToast = null;
 
@@ -298,6 +299,7 @@ public static Toast custom(@NonNull Context context, @StringRes int message, Dra
                 ToastyUtils.getColor(context, textColorRes), duration, withIcon, shouldTint);
     }
 
+
     @SuppressLint("ShowToast")
     @CheckResult
     public static Toast custom(@NonNull Context context, @NonNull CharSequence message, Drawable icon,
@@ -331,6 +333,11 @@ public static Toast custom(@NonNull Context context, @NonNull CharSequence messa
         toastTextView.setTextColor(textColor);
         toastTextView.setTypeface(currentTypeface);
         toastTextView.setTextSize(TypedValue.COMPLEX_UNIT_SP, textSize);
+        toastTextView.setShadowLayer(
+                shadowOptions.getRadius(),
+                shadowOptions.getDx(),
+                shadowOptions.getDy(),
+                shadowOptions.getColor());
 
         currentToast.setView(toastLayout);
 
@@ -390,6 +397,8 @@ public static class Config {
         private int yOffset = Toasty.yOffset;
         private boolean supportDarkTheme = true;
         private boolean isRTL = false;
+        private ShadowOptions shadowOptions = Toasty.shadowOptions;
+
 
         private Config() {
             // avoiding instantiation
@@ -410,6 +419,7 @@ public static void reset() {
             Toasty.yOffset = -1;
             Toasty.supportDarkTheme = true;
             Toasty.isRTL = false;
+            Toasty.shadowOptions = ShadowOptions.NONE;
         }
 
         @CheckResult
@@ -455,7 +465,14 @@ public Config supportDarkTheme(boolean supportDarkTheme) {
             this.supportDarkTheme = supportDarkTheme;
             return this;
         }
-         
+
+        @CheckResult
+        public Config setShadow(ShadowOptions shadowOptions) {
+            this.shadowOptions = shadowOptions;
+            return this;
+        }
+
+        @CheckResult
         public Config setRTL(boolean isRTL) {
             this.isRTL = isRTL;
             return this;
@@ -471,6 +488,7 @@ public void apply() {
             Toasty.yOffset = yOffset;
             Toasty.supportDarkTheme = supportDarkTheme;
             Toasty.isRTL = isRTL;
+            Toasty.shadowOptions = shadowOptions;
         }
     }
 }