Merge "Show display topology in the pane" into main

2024-12-16 16:24:18 -08:00
parent 66dde6fea1 807cf78a51
commit 7b7f72d902
3 changed files with 264 additions and 6 deletions
--- a/tests/robotests/src/com/android/settings/connecteddevice/display/DisplayTopologyPreferenceTest.kt
+++ b/tests/robotests/src/com/android/settings/connecteddevice/display/DisplayTopologyPreferenceTest.kt
@@ -0,0 +1,120 @@
+/*
+ * Copyright (C) 2024 The Android Open Source Project
+ *
+ * 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 com.android.settings.connecteddevice.display
+
+import android.hardware.display.DisplayTopology.TreeNode.POSITION_LEFT
+
+import android.content.Context
+import android.graphics.Color
+import android.graphics.drawable.Drawable
+import android.graphics.drawable.ColorDrawable
+import android.hardware.display.DisplayTopology
+import android.view.View
+import android.widget.FrameLayout
+import androidx.preference.PreferenceViewHolder
+import androidx.test.core.app.ApplicationProvider
+
+import com.android.settings.R
+import com.google.common.truth.Truth.assertThat
+
+import org.junit.Test
+import org.junit.runner.RunWith
+import org.robolectric.RobolectricTestRunner
+
+@RunWith(RobolectricTestRunner::class)
+class DisplayTopologyPreferenceTest {
+    val context = ApplicationProvider.getApplicationContext<Context>()
+    val preference = DisplayTopologyPreference(context)
+    val injector = TestInjector()
+    val rootView = View.inflate(context, preference.layoutResource, /*parent=*/ null)
+    val holder = PreferenceViewHolder.createInstanceForTests(rootView)
+    val wallpaper = ColorDrawable(Color.MAGENTA)
+
+    init {
+        preference.injector = injector
+        injector.systemWallpaper = wallpaper
+        preference.onBindViewHolder(holder)
+    }
+
+    class TestInjector : DisplayTopologyPreference.Injector() {
+        var topology : DisplayTopology? = null
+        var systemWallpaper : Drawable? = null
+
+        override fun displayTopology(context : Context) : DisplayTopology? { return topology }
+
+        override fun wallpaper(context : Context) : Drawable { return systemWallpaper!! }
+    }
+
+    @Test
+    fun disabledTopology() {
+        preference.onAttached()
+        preference.onGlobalLayout()
+
+        assertThat(preference.mPaneContent.childCount).isEqualTo(0)
+        // TODO(b/352648432): update test when we show the main display even when
+        // a topology is not active.
+        assertThat(preference.mTopologyHint.text).isEqualTo("")
+    }
+
+    @Test
+    fun twoDisplaysGenerateBlocks() {
+        val child = DisplayTopology.TreeNode(
+                /* displayId= */ 42, /* width= */ 100f, /* height= */ 80f,
+                POSITION_LEFT, /* offset= */ 42f)
+        val root = DisplayTopology.TreeNode(
+                /* displayId= */ 0, /* width= */ 200f, /* height= */ 160f,
+                POSITION_LEFT, /* offset= */ 0f)
+        root.addChild(child)
+        injector.topology = DisplayTopology(root, /*primaryDisplayId=*/ 0)
+
+        // This layoutParams needs to be non-null for the global layout handler.
+        preference.mPaneHolder.layoutParams = FrameLayout.LayoutParams(
+                /* width= */ 640, /* height= */ 480)
+
+        // Force pane width to have a reasonable value (hundreds of dp) so the TopologyScale is
+        // calculated reasonably.
+        preference.mPaneContent.left = 0
+        preference.mPaneContent.right = 640
+
+        preference.onAttached()
+        preference.onGlobalLayout()
+
+        assertThat(preference.mPaneContent.childCount).isEqualTo(2)
+        val block0 = preference.mPaneContent.getChildAt(0)
+        val block1 = preference.mPaneContent.getChildAt(1)
+
+        // Block of child display is on the left.
+        val (childBlock, rootBlock) = if (block0.x < block1.x)
+                listOf(block0, block1)
+        else
+                listOf(block1, block0)
+
+        // After accounting for padding, child should be half the length of root in each dimension.
+        assertThat(childBlock.layoutParams.width + BLOCK_PADDING)
+                .isEqualTo(rootBlock.layoutParams.width / 2)
+        assertThat(childBlock.layoutParams.height + BLOCK_PADDING)
+                .isEqualTo(rootBlock.layoutParams.height / 2)
+        assertThat(childBlock.y).isGreaterThan(rootBlock.y)
+        assertThat(block0.background).isEqualTo(wallpaper)
+        assertThat(block1.background).isEqualTo(wallpaper)
+        assertThat(rootBlock.x - BLOCK_PADDING * 2)
+                .isEqualTo(childBlock.x + childBlock.layoutParams.width)
+
+        assertThat(preference.mTopologyHint.text)
+                .isEqualTo(context.getString(R.string.external_display_topology_hint))
+    }
+}