ReaderProgressIndicator: Set indeterminate as default state (#5605)

Will also set to indeterminate if progress is 0.

app/src/main/java/eu/kanade/tachiyomi/ui/reader/viewer/ReaderProgressIndicator.kt

@@ -8,7 +8,7 @@ import android.view.animation.LinearInterpolator
 import android.view.animation.RotateAnimation
 import android.widget.FrameLayout
 import androidx.annotation.IntRange
-import androidx.core.view.isVisible
+import androidx.dynamicanimation.animation.DynamicAnimation
 import com.google.android.material.progressindicator.CircularProgressIndicator
 
 /**
@@ -44,34 +44,71 @@ class ReaderProgressIndicator @JvmOverloads constructor(
         layoutParams = LayoutParams(WRAP_CONTENT, WRAP_CONTENT)
         indicator = CircularProgressIndicator(context)
         indicator.max = 100
+        indicator.isIndeterminate = true
         addView(indicator)
     }
 
     override fun onAttachedToWindow() {
         super.onAttachedToWindow()
-        if (indicator.isVisible && animation == null) {
-            startAnimation(rotateAnimation)
-        }
+        updateRotateAnimation()
     }
 
     override fun onDetachedFromWindow() {
         super.onDetachedFromWindow()
-        clearAnimation()
+        updateRotateAnimation()
     }
 
     fun show() {
         indicator.show()
-        if (animation == null) {
-            startAnimation(rotateAnimation)
-        }
+        updateRotateAnimation()
     }
 
     fun hide() {
         indicator.hide()
-        clearAnimation()
+        updateRotateAnimation()
     }
 
+    /**
+     * Sets the current indicator progress to the specified value.
+     *
+     * @param progress Indicator will be set indeterminate if this value is 0
+     */
     fun setProgress(@IntRange(from = 0, to = 100) progress: Int, animated: Boolean = true) {
-        indicator.setProgressCompat(progress, animated)
+        if (progress > 0) {
+            indicator.setProgressCompat(progress, animated)
+        } else if (!indicator.isIndeterminate) {
+            indicator.hide()
+            indicator.isIndeterminate = true
+            indicator.show()
+        }
+        updateRotateAnimation()
+    }
+
+    fun setCompleteProgressAndHide() {
+        val listener = object : DynamicAnimation.OnAnimationEndListener {
+            override fun onAnimationEnd(
+                animation: DynamicAnimation<*>?,
+                canceled: Boolean,
+                value: Float,
+                velocity: Float
+            ) {
+                hide()
+                indicator.progressDrawable?.removeSpringAnimationEndListener(this)
+            }
+        }
+
+        indicator.progressDrawable?.addSpringAnimationEndListener(listener)
+        indicator.setProgressCompat(100, true)
+        updateRotateAnimation(forceRotate = true)
+    }
+
+    private fun updateRotateAnimation(forceRotate: Boolean = false) {
+        if (forceRotate || (indicator.isShown && !indicator.isIndeterminate)) {
+            if (animation == null && isAttachedToWindow) {
+                startAnimation(rotateAnimation)
+            }
+        } else {
+            clearAnimation()
+        }
     }
 }

app/src/main/java/eu/kanade/tachiyomi/ui/reader/viewer/pager/PagerPageHolder.kt

@@ -245,8 +245,7 @@ class PagerPageHolder(
      * Called when the page is ready.
      */
     private fun setImage() {
-        progressIndicator.setProgress(100)
-        progressIndicator.hide()
+        progressIndicator.setCompleteProgressAndHide()
         retryButton?.isVisible = false
         decodeErrorLayout?.isVisible = false
 
@@ -332,13 +331,6 @@ class PagerPageHolder(
         initRetryButton().isVisible = true
     }
 
-    /**
-     * Called when the image is decoded and going to be displayed.
-     */
-    private fun onImageDecoded() {
-        progressIndicator.hide()
-    }
-
     /**
      * Called when an image fails to decode.
      */
@@ -373,7 +365,6 @@ class PagerPageHolder(
                             ZoomType.Right -> setScaleAndCenter(scale, PointF(sWidth.toFloat(), 0f))
                             ZoomType.Center -> setScaleAndCenter(scale, center.also { it?.y = 0f })
                         }
-                        onImageDecoded()
                     }
 
                     override fun onImageLoadError(e: Exception) {
@@ -504,7 +495,6 @@ class PagerPageHolder(
                         result.start()
                     }
                     setImageDrawable(result)
-                    onImageDecoded()
                 },
                 onError = {
                     onImageDecodeError()

app/src/main/java/eu/kanade/tachiyomi/ui/reader/viewer/webtoon/WebtoonPageHolder.kt

@@ -265,9 +265,7 @@ class WebtoonPageHolder(
      * Called when the page is ready.
      */
     private fun setImage() {
-        progressContainer.isVisible = true
-        progressIndicator.setProgress(100)
-        progressIndicator.hide()
+        progressIndicator.setCompleteProgressAndHide()
         retryContainer?.isVisible = false
         removeDecodeErrorLayout()
 
@@ -325,13 +323,6 @@ class WebtoonPageHolder(
         initRetryLayout().isVisible = true
     }
 
-    /**
-     * Called when the image is decoded and going to be displayed.
-     */
-    private fun onImageDecoded() {
-        progressContainer.isVisible = false
-    }
-
     /**
      * Called when the image fails to decode.
      */
@@ -382,10 +373,6 @@ class WebtoonPageHolder(
             setCropBorders(cropBorders)
             setOnImageEventListener(
                 object : SubsamplingScaleImageView.DefaultOnImageEventListener() {
-                    override fun onReady() {
-                        onImageDecoded()
-                    }
-
                     override fun onImageLoadError(e: Exception) {
                         onImageDecodeError()
                     }
@@ -517,7 +504,6 @@ class WebtoonPageHolder(
                         result.start()
                     }
                     setImageDrawable(result)
-                    onImageDecoded()
                 },
                 onError = {
                     onImageDecodeError()