Merge pull request #1459 from AllanWang/image-swipe

Image swipe

15 files changed, 224 insertions, 66 deletions

diff --git a/app/build.gradle b/app/build.gradle
index 2348e053..4efd7930 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -189,21 +189,23 @@ dependencies {
     implementation kau.Dependencies.kotlin
 
     //noinspection GradleDependency
-    implementation "ca.allanwang.kau:adapter:${KAU}"
+    implementation kau.Dependencies.kau('core', KAU)
     //noinspection GradleDependency
-    implementation "ca.allanwang.kau:about:${KAU}"
+    implementation kau.Dependencies.kau('core-ui', KAU)
     //noinspection GradleDependency
-    implementation "ca.allanwang.kau:colorpicker:${KAU}"
+    implementation kau.Dependencies.kau('adapter', KAU)
     //noinspection GradleDependency
-    implementation "ca.allanwang.kau:mediapicker:${KAU}"
+    implementation kau.Dependencies.kau('fastadapter', KAU)
     //noinspection GradleDependency
-    implementation "ca.allanwang.kau:kpref-activity:${KAU}"
+    implementation kau.Dependencies.kau('about', KAU)
     //noinspection GradleDependency
-    implementation "ca.allanwang.kau:searchview:${KAU}"
+    implementation kau.Dependencies.kau('colorpicker', KAU)
     //noinspection GradleDependency
-    implementation "ca.allanwang.kau:core:${KAU}"
+    implementation kau.Dependencies.kau('mediapicker', KAU)
     //noinspection GradleDependency
-    implementation "ca.allanwang.kau:core-ui:${KAU}"
+    implementation kau.Dependencies.kau('kpref-activity', KAU)
+    //noinspection GradleDependency
+    implementation kau.Dependencies.kau('searchview', KAU)
 
     implementation "androidx.core:core-ktx:${Versions.ktx}"
 
diff --git a/app/src/main/AndroidManifest.xml b/app/src/main/AndroidManifest.xml
index bd8776d1..e4fc0415 100644
--- a/app/src/main/AndroidManifest.xml
+++ b/app/src/main/AndroidManifest.xml
@@ -147,7 +147,7 @@
             android:theme="@style/Kau.About" />
         <activity
             android:name=".activities.ImageActivity"
-            android:theme="@style/FrostTheme.Transparent" />
+            android:theme="@style/FrostTheme.Overlay" />
         <activity android:name=".activities.DebugActivity" />
 
         <service
diff --git a/app/src/main/kotlin/com/pitchedapps/frost/StartActivity.kt b/app/src/main/kotlin/com/pitchedapps/frost/StartActivity.kt
index cf8acdd3..61b4a194 100644
--- a/app/src/main/kotlin/com/pitchedapps/frost/StartActivity.kt
+++ b/app/src/main/kotlin/com/pitchedapps/frost/StartActivity.kt
@@ -86,7 +86,12 @@ class StartActivity : KauBaseActivity() {
                 FbCookie.switchBackUser()
                 val cookies = ArrayList(cookieDao.selectAll())
                 L.i { "Cookies loaded at time ${System.currentTimeMillis()}" }
-                L._d { "Cookies: ${cookies.joinToString("\t", transform = CookieEntity::toSensitiveString)}" }
+                L._d {
+                    "Cookies: ${cookies.joinToString(
+                        "\t",
+                        transform = CookieEntity::toSensitiveString
+                    )}"
+                }
                 loadAssets()
                 authDefer.await()
                 when {
@@ -112,7 +117,8 @@ class StartActivity : KauBaseActivity() {
      */
     private suspend fun migrate() = withContext(Dispatchers.IO) {
         if (cookieDao.selectAll().isNotEmpty()) return@withContext
-        val cookies = (select from CookieModel::class).queryList().map { CookieEntity(it.id, it.name, it.cookie) }
+        val cookies = (select from CookieModel::class).queryList()
+            .map { CookieEntity(it.id, it.name, it.cookie) }
         if (cookies.isNotEmpty()) {
             cookieDao.save(cookies)
             L._d { "Migrated cookies ${cookieDao.selectAll()}" }
diff --git a/app/src/main/kotlin/com/pitchedapps/frost/activities/ImageActivity.kt b/app/src/main/kotlin/com/pitchedapps/frost/activities/ImageActivity.kt
index 814ce778..c7d31032 100644
--- a/app/src/main/kotlin/com/pitchedapps/frost/activities/ImageActivity.kt
+++ b/app/src/main/kotlin/com/pitchedapps/frost/activities/ImageActivity.kt
@@ -23,11 +23,13 @@ import android.graphics.Color
 import android.os.Bundle
 import android.os.Environment
 import android.view.View
+import androidx.customview.widget.ViewDragHelper
 import ca.allanwang.kau.internal.KauBaseActivity
 import ca.allanwang.kau.logging.KauLoggerExtension
 import ca.allanwang.kau.mediapicker.scanMedia
 import ca.allanwang.kau.permissions.PERMISSION_WRITE_EXTERNAL_STORAGE
 import ca.allanwang.kau.permissions.kauRequestPermissions
+import ca.allanwang.kau.utils.adjustAlpha
 import ca.allanwang.kau.utils.colorToForeground
 import ca.allanwang.kau.utils.copyFromInputStream
 import ca.allanwang.kau.utils.fadeOut
@@ -75,6 +77,8 @@ import java.io.IOException
 import java.text.SimpleDateFormat
 import java.util.Date
 import java.util.Locale
+import kotlin.math.abs
+import kotlin.math.max
 
 /**
  * Created by Allan Wang on 2017-07-15.
@@ -103,6 +107,8 @@ class ImageActivity : KauBaseActivity() {
             value.update(image_fab)
         }
 
+    private lateinit var dragHelper: ViewDragHelper
+
     companion object {
         /**
          * Cache folder to store images
@@ -135,6 +141,9 @@ class ImageActivity : KauBaseActivity() {
         )}_${Math.abs(imageUrl.hashCode())}"
     }
 
+    private val baseBackgroundColor = if (Prefs.blackMediaBg) Color.BLACK
+    else Prefs.bgColor.withMinAlpha(235)
+
     private fun loadError(e: Throwable) {
         errorRef = e
         e.logFrostEvent("Image load error")
@@ -158,12 +167,10 @@ class ImageActivity : KauBaseActivity() {
             result
         }
 
-        val layout = if (!imageText.isNullOrBlank()) R.layout.activity_image else R.layout.activity_image_textless
+        val layout =
+            if (!imageText.isNullOrBlank()) R.layout.activity_image else R.layout.activity_image_textless
         setContentView(layout)
-        image_container.setBackgroundColor(
-            if (Prefs.blackMediaBg) Color.BLACK
-            else Prefs.bgColor.withMinAlpha(222)
-        )
+        image_container.setBackgroundColor(baseBackgroundColor)
         image_text?.setTextColor(if (Prefs.blackMediaBg) Color.WHITE else Prefs.textColor)
         image_text?.setBackgroundColor(
             (if (Prefs.blackMediaBg) Color.BLACK else Prefs.bgColor)
@@ -171,7 +178,8 @@ class ImageActivity : KauBaseActivity() {
         )
         image_text?.text = imageText
         image_progress.tint(if (Prefs.blackMediaBg) Color.WHITE else Prefs.accentColor)
-        image_panel?.addPanelSlideListener(object : SlidingUpPanelLayout.SimplePanelSlideListener() {
+        image_panel?.addPanelSlideListener(object :
+            SlidingUpPanelLayout.SimplePanelSlideListener() {
             override fun onPanelSlide(panel: View, slideOffset: Float) {
                 if (slideOffset == 0f && !image_fab.isShown) image_fab.show()
                 else if (slideOffset != 0f && image_fab.isShown) image_fab.hide()
@@ -179,7 +187,8 @@ class ImageActivity : KauBaseActivity() {
             }
         })
         image_fab.setOnClickListener { fabAction.onClick(this) }
-        image_photo.setOnImageEventListener(object : SubsamplingScaleImageView.DefaultOnImageEventListener() {
+        image_photo.setOnImageEventListener(object :
+            SubsamplingScaleImageView.DefaultOnImageEventListener() {
             override fun onImageLoadError(e: Exception) {
                 loadError(e)
             }
@@ -194,14 +203,73 @@ class ImageActivity : KauBaseActivity() {
             image_photo.setImage(ImageSource.uri(frostUriFromFile(tempFile)))
             fabAction = FabStates.DOWNLOAD
             image_photo.animate().alpha(1f).scaleXY(1f).start()
+            dragHelper = ViewDragHelper.create(image_drag, ViewDragCallback()).apply {
+                setEdgeTrackingEnabled(ViewDragHelper.EDGE_TOP or ViewDragHelper.EDGE_BOTTOM)
+            }
+            image_drag.dragHelper = dragHelper
+        }
+    }
+
+    private inner class ViewDragCallback : ViewDragHelper.Callback() {
+        private var scrollPercent: Float = 0f
+        private var scrollThreshold = 0.5f
+        private var scrollToTop = false
+
+        override fun tryCaptureView(view: View, i: Int): Boolean {
+            return true
+        }
+
+        override fun getViewHorizontalDragRange(child: View): Int = 0
+
+        override fun getViewVerticalDragRange(child: View): Int = child.height
+
+        override fun onViewPositionChanged(
+            changedView: View,
+            left: Int,
+            top: Int,
+            dx: Int,
+            dy: Int
+        ) {
+            super.onViewPositionChanged(changedView, left, top, dx, dy)
+            //make sure that we are using the proper axis
+            scrollPercent = abs(top.toFloat() / image_container.height)
+            scrollToTop = top < 0
+            val multiplier = max(1f - scrollPercent, 0f)
+            image_fab.alpha = multiplier
+            image_panel?.alpha = multiplier
+            image_container.setBackgroundColor(baseBackgroundColor.adjustAlpha(multiplier))
+
+            if (scrollPercent >= 1) {
+                if (!isFinishing) {
+                    finish()
+                    overridePendingTransition(0, 0)
+                }
+            }
         }
+
+        override fun onViewReleased(releasedChild: View, xvel: Float, yvel: Float) {
+            val overScrolled = scrollPercent > scrollThreshold
+            val maxOffset = releasedChild.height + 10
+            val finalTop = when {
+                scrollToTop && (overScrolled || yvel < -dragHelper.minVelocity) -> -maxOffset
+                !scrollToTop && (overScrolled || yvel > dragHelper.minVelocity) -> maxOffset
+                else -> 0
+            }
+            dragHelper.settleCapturedViewAt(0, finalTop)
+            image_drag.invalidate()
+        }
+
+        override fun clampViewPositionHorizontal(child: View, left: Int, dx: Int): Int = 0
+
+        override fun clampViewPositionVertical(child: View, top: Int, dy: Int): Int = top
     }
 
     @Throws(IOException::class)
     private fun createPublicMediaFile(): File {
         val timeStamp = SimpleDateFormat(TIME_FORMAT, Locale.getDefault()).format(Date())
         val imageFileName = "${IMG_TAG}_${timeStamp}_"
-        val storageDir = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES)
+        val storageDir =
+            Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES)
         val frostDir = File(storageDir, IMG_TAG)
         if (!frostDir.exists()) frostDir.mkdirs()
         return File.createTempFile(imageFileName, IMG_EXTENSION, frostDir)
diff --git a/app/src/main/kotlin/com/pitchedapps/frost/utils/Prefs.kt b/app/src/main/kotlin/com/pitchedapps/frost/utils/Prefs.kt
index 7656a081..51eb856b 100644
--- a/app/src/main/kotlin/com/pitchedapps/frost/utils/Prefs.kt
+++ b/app/src/main/kotlin/com/pitchedapps/frost/utils/Prefs.kt
@@ -19,7 +19,6 @@ package com.pitchedapps.frost.utils
 import android.graphics.Color
 import ca.allanwang.kau.kotlin.lazyResettable
 import ca.allanwang.kau.kpref.KPref
-import ca.allanwang.kau.kpref.kpref
 import ca.allanwang.kau.utils.colorToForeground
 import ca.allanwang.kau.utils.isColorVisibleOn
 import ca.allanwang.kau.utils.withAlpha
diff --git a/app/src/main/kotlin/com/pitchedapps/frost/utils/Showcase.kt b/app/src/main/kotlin/com/pitchedapps/frost/utils/Showcase.kt
index 27016018..df48bfbc 100644
--- a/app/src/main/kotlin/com/pitchedapps/frost/utils/Showcase.kt
+++ b/app/src/main/kotlin/com/pitchedapps/frost/utils/Showcase.kt
@@ -17,8 +17,6 @@
 package com.pitchedapps.frost.utils
 
 import ca.allanwang.kau.kpref.KPref
-import ca.allanwang.kau.kpref.kpref
-import ca.allanwang.kau.kpref.kprefSingle
 
 /**
  * Created by Allan Wang on 2017-07-03.
diff --git a/app/src/main/kotlin/com/pitchedapps/frost/views/DragFrame.kt b/app/src/main/kotlin/com/pitchedapps/frost/views/DragFrame.kt
new file mode 100644
index 00000000..c2f36536
--- /dev/null
+++ b/app/src/main/kotlin/com/pitchedapps/frost/views/DragFrame.kt
@@ -0,0 +1,58 @@
+/*
+ * Copyright 2019 Allan Wang
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+package com.pitchedapps.frost.views
+
+import android.annotation.SuppressLint
+import android.content.Context
+import android.util.AttributeSet
+import android.view.MotionEvent
+import android.widget.FrameLayout
+import androidx.core.view.ViewCompat
+import androidx.customview.widget.ViewDragHelper
+
+class DragFrame @JvmOverloads constructor(
+    context: Context,
+    attrs: AttributeSet? = null,
+    defStyleAttr: Int = 0
+) : FrameLayout(context, attrs, defStyleAttr) {
+    var dragHelper: ViewDragHelper? = null
+
+    override fun onInterceptTouchEvent(event: MotionEvent): Boolean {
+        return try {
+            dragHelper?.shouldInterceptTouchEvent(event) ?: false
+        } catch (e: Exception) {
+            false
+        }
+    }
+
+    @SuppressLint("ClickableViewAccessibility")
+    override fun onTouchEvent(event: MotionEvent): Boolean {
+        try {
+            dragHelper?.processTouchEvent(event) ?: return false
+        } catch (e: Exception) {
+            return false
+        }
+        return true
+    }
+
+    override fun computeScroll() {
+        super.computeScroll()
+        if (dragHelper?.continueSettling(true) == true) {
+            ViewCompat.postInvalidateOnAnimation(this)
+        }
+    }
+}
diff --git a/app/src/main/kotlin/com/pitchedapps/frost/views/SwipeRefreshLayout.kt b/app/src/main/kotlin/com/pitchedapps/frost/views/SwipeRefreshLayout.kt
index 2154ce2d..5c7c58f1 100644
--- a/app/src/main/kotlin/com/pitchedapps/frost/views/SwipeRefreshLayout.kt
+++ b/app/src/main/kotlin/com/pitchedapps/frost/views/SwipeRefreshLayout.kt
@@ -1,3 +1,19 @@
+/*
+ * Copyright 2019 Allan Wang
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
 package com.pitchedapps.frost.views
 
 import android.content.Context
@@ -84,4 +100,4 @@ class SwipeRefreshLayout @JvmOverloads constructor(context: Context, attrs: Attr
      * Alias for adding on refresh listener
      */
     interface OnRefreshListener : SwipeRefreshLayout.OnRefreshListener
-}
\ No newline at end of file
+}
diff --git a/app/src/main/play/en-US/whatsnew b/app/src/main/play/en-US/whatsnew
index cd43de9e..9ae7372d 100644
--- a/app/src/main/play/en-US/whatsnew
+++ b/app/src/main/play/en-US/whatsnew
@@ -1,4 +1,5 @@
 v2.3.1
 
 * Hide all story panels if enabled
-* Prevent swipe to refresh if not at the very top
\ No newline at end of file
+* Prevent swipe to refresh if not at the very top
+* Add vertical swipe to dismiss when viewing images
\ No newline at end of file
diff --git a/app/src/main/res/layout/activity_image.xml b/app/src/main/res/layout/activity_image.xml
index 4e6d4ce1..85837fc3 100644
--- a/app/src/main/res/layout/activity_image.xml
+++ b/app/src/main/res/layout/activity_image.xml
@@ -12,31 +12,6 @@
         android:layout_height="wrap_content"
         android:layout_gravity="center" />
 
-    <com.sothree.slidinguppanel.SlidingUpPanelLayout
-        android:id="@+id/image_panel"
-        android:layout_width="match_parent"
-        android:layout_height="match_parent"
-        android:gravity="bottom"
-        app:umanoPanelHeight="44dp"
-        app:umanoShadowHeight="0dp">
-
-        <com.davemorrissey.labs.subscaleview.SubsamplingScaleImageView
-            android:id="@+id/image_photo"
-            android:layout_width="match_parent"
-            android:layout_height="match_parent"
-            android:alpha="0"
-            android:scaleX="0.9"
-            android:scaleY="0.9" />
-
-        <TextView
-            android:id="@+id/image_text"
-            android:layout_width="match_parent"
-            android:layout_height="wrap_content"
-            android:alpha="0.5"
-            android:padding="@dimen/kau_padding_normal" />
-
-    </com.sothree.slidinguppanel.SlidingUpPanelLayout>
-
     <com.google.android.material.floatingactionbutton.FloatingActionButton
         android:id="@+id/image_fab"
         android:layout_width="wrap_content"
@@ -45,4 +20,36 @@
         android:layout_margin="@dimen/kau_fab_margin"
         android:visibility="invisible" />
 
+    <com.pitchedapps.frost.views.DragFrame
+        android:id="@+id/image_drag"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent">
+
+        <com.sothree.slidinguppanel.SlidingUpPanelLayout
+            android:id="@+id/image_panel"
+            android:layout_width="match_parent"
+            android:layout_height="match_parent"
+            android:gravity="bottom"
+            app:umanoPanelHeight="44dp"
+            app:umanoShadowHeight="0dp">
+
+            <TextView
+                android:id="@+id/image_text"
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:alpha="0.5"
+                android:padding="@dimen/kau_padding_normal" />
+
+            <com.davemorrissey.labs.subscaleview.SubsamplingScaleImageView
+                android:id="@+id/image_photo"
+                android:layout_width="match_parent"
+                android:layout_height="match_parent"
+                android:alpha="0"
+                android:scaleX="0.9"
+                android:scaleY="0.9" />
+
+        </com.sothree.slidinguppanel.SlidingUpPanelLayout>
+
+    </com.pitchedapps.frost.views.DragFrame>
+
 </androidx.coordinatorlayout.widget.CoordinatorLayout>
\ No newline at end of file
diff --git a/app/src/main/res/layout/activity_image_textless.xml b/app/src/main/res/layout/activity_image_textless.xml
index e047b23d..41fd43a2 100644
--- a/app/src/main/res/layout/activity_image_textless.xml
+++ b/app/src/main/res/layout/activity_image_textless.xml
@@ -11,13 +11,20 @@
         android:layout_height="wrap_content"
         android:layout_gravity="center" />
 
-    <com.davemorrissey.labs.subscaleview.SubsamplingScaleImageView
-        android:id="@+id/image_photo"
+    <com.pitchedapps.frost.views.DragFrame
+        android:id="@+id/image_drag"
         android:layout_width="match_parent"
-        android:layout_height="match_parent"
-        android:alpha="0"
-        android:scaleX="0.9"
-        android:scaleY="0.9" />
+        android:layout_height="match_parent">
+
+        <com.davemorrissey.labs.subscaleview.SubsamplingScaleImageView
+            android:id="@+id/image_photo"
+            android:layout_width="match_parent"
+            android:layout_height="match_parent"
+            android:alpha="0"
+            android:scaleX="0.9"
+            android:scaleY="0.9" />
+
+    </com.pitchedapps.frost.views.DragFrame>
 
     <com.google.android.material.floatingactionbutton.FloatingActionButton
         android:id="@+id/image_fab"
diff --git a/app/src/main/res/values/styles.xml b/app/src/main/res/values/styles.xml
index 7816533b..33f36174 100644
--- a/app/src/main/res/values/styles.xml
+++ b/app/src/main/res/values/styles.xml
@@ -38,6 +38,9 @@
     </style>
 
     <style name="FrostTheme.Overlay">
+        <item name="android:windowBackground">@android:color/transparent</item>
+        <item name="android:backgroundDimEnabled">false</item>
+        <item name="android:colorBackgroundCacheHint">@null</item>
         <item name="android:windowIsTranslucent">true</item>
     </style>
 
@@ -49,12 +52,7 @@
         <item name="android:windowAnimationStyle">@style/KauFadeInFadeOut</item>
     </style>
 
-    <style name="FrostTheme.Video" parent="FrostTheme.Overlay.Fade">
-        <item name="android:windowBackground">@android:color/transparent</item>
-        <item name="android:backgroundDimEnabled">false</item>
-        <item name="android:colorBackgroundCacheHint">@null</item>
-        <item name="android:windowIsTranslucent">true</item>
-    </style>
+    <style name="FrostTheme.Video" parent="FrostTheme.Overlay.Fade" />
 
     <style name="FrostTheme.Settings" parent="FrostTheme">
         <item name="android:windowAnimationStyle">@style/KauSlideInFadeOut</item>
diff --git a/app/src/main/res/xml/frost_changelog.xml b/app/src/main/res/xml/frost_changelog.xml
index c059c532..32fc108b 100644
--- a/app/src/main/res/xml/frost_changelog.xml
+++ b/app/src/main/res/xml/frost_changelog.xml
@@ -9,7 +9,7 @@
     <version title="v2.3.1" />
     <item text="Hide all story panels if enabled" />
     <item text="Prevent swipe to refresh if not at the very top" />
-    <item text="" />
+    <item text="Add vertical swipe to dismiss when viewing images" />
     <item text="" />
     <item text="" />
 
@@ -21,9 +21,6 @@
     <item text="Add fingerprint unlock screen" />
     <item text="Fix messenger redirect" />
     <item text="Lots of internal updates" />
-    <item text="" />
-    <item text="" />
-    <item text="" />
 
     <version title="v2.2.4" />
     <item text="Show top bar to allow sharing posts" />
diff --git a/docs/Changelog.md b/docs/Changelog.md
index c581c0e1..bfcfaf47 100644
--- a/docs/Changelog.md
+++ b/docs/Changelog.md
@@ -3,6 +3,7 @@
 ## v2.3.1
 * Hide all story panels if enabled
 * Prevent swipe to refresh if not at the very top
+* Add vertical swipe to dismiss when viewing images
 
 ## v2.3.0
 * Converted internals of Facebook data storage; auto migration will only work from 2.2.x to 2.3.x
diff --git a/gradle.properties b/gradle.properties
index 83b2027b..ea3a684a 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -16,7 +16,7 @@ org.gradle.daemon = true
 APP_ID=Frost
 APP_GROUP=com.pitchedapps
 
-KAU=5.0.0
+KAU=d91d734
 
 android.useAndroidX=true
 android.enableJetifier=true