Merge pull request #357 from MikeOrtiz/TouchCoordinates

Touch coordinates

Author: hannesa2

app/src/androidTest/java/info/touchimage/demo/TouchTest.kt

@@ -0,0 +1,27 @@
+package info.touchimage.demo
+
+import androidx.test.espresso.Espresso.onView
+import androidx.test.espresso.matcher.ViewMatchers.withId
+import androidx.test.ext.junit.rules.ActivityScenarioRule
+import androidx.test.ext.junit.runners.AndroidJUnit4
+import com.moka.utils.Screenshot
+import info.touchimage.demo.utils.TouchAction
+import org.junit.Rule
+import org.junit.Test
+import org.junit.runner.RunWith
+
+@RunWith(AndroidJUnit4::class)
+class TouchTest {
+
+    @get:Rule
+    var activityScenarioRule = ActivityScenarioRule(SingleTouchImageViewActivity::class.java)
+
+    @Test
+    fun testSingleTouch() {
+        onView(withId(R.id.imageSingle)).perform(TouchAction(4f, 8f))
+        Screenshot.takeScreenshot("touch1")
+        onView(withId(R.id.imageSingle)).perform(TouchAction(40f, 80f))
+        Screenshot.takeScreenshot("touch2")
+    }
+
+}

app/src/androidTest/java/info/touchimage/demo/utils/TouchAction.kt

@@ -0,0 +1,30 @@
+package info.touchimage.demo.utils
+
+import android.view.View
+import androidx.test.espresso.UiController
+import androidx.test.espresso.ViewAction
+import androidx.test.espresso.action.MotionEvents
+import androidx.test.espresso.matcher.ViewMatchers
+import org.hamcrest.Matcher
+
+class TouchAction(private val x: Float, private val y: Float) : ViewAction {
+
+    override fun getConstraints(): Matcher<View> = ViewMatchers.isDisplayed()
+
+    override fun getDescription() = "Send touch events"
+
+    override fun perform(uiController: UiController, view: View) {
+        // Get view absolute position
+        val location = IntArray(2)
+        view.getLocationOnScreen(location)
+
+        // Offset coordinates by view position
+        val coordinates = floatArrayOf(x + location[0], y + location[1])
+        val precision = floatArrayOf(1f, 1f)
+
+        // Send down event, pause, and send up
+        val down = MotionEvents.sendDown(uiController, coordinates, precision).down
+        uiController.loopMainThreadForAtLeast(200)
+        MotionEvents.sendUp(uiController, down, coordinates)
+    }
+}

app/src/main/java/info/touchimage/demo/SingleTouchImageViewActivity.kt

@@ -1,8 +1,12 @@
 package info.touchimage.demo
 
 import android.annotation.SuppressLint
+import android.graphics.PointF
 import android.os.Bundle
+import android.view.MotionEvent
+import android.view.View
 import androidx.appcompat.app.AppCompatActivity
+import com.ortiz.touchview.OnTouchCoordinatesListener
 import com.ortiz.touchview.OnTouchImageViewListener
 import info.touchimage.demo.databinding.ActivitySingleTouchimageviewBinding
 import java.text.DecimalFormat
@@ -38,5 +42,11 @@ class SingleTouchImageViewActivity : AppCompatActivity() {
             }
         }
         )
+
+        binding.imageSingle.setOnTouchCoordinatesListener(object: OnTouchCoordinatesListener {
+            override fun onTouchCoordinate(view: View, event: MotionEvent, bitmapPoint: PointF) {
+                binding.touchCoordinates.text = "touch coordinates x=${bitmapPoint.x} y=${bitmapPoint.y}"
+            }
+        })
     }
 }

app/src/main/res/layout/activity_single_touchimageview.xml

@@ -1,5 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
     android:layout_width="match_parent"
     android:layout_height="match_parent">
 
@@ -14,7 +15,6 @@
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
         android:layout_alignParentTop="true"
-        android:layout_centerHorizontal="true"
         android:layout_marginTop="10dp"
         android:background="@android:color/white"
         android:padding="5dp">
@@ -23,29 +23,31 @@
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
             android:paddingEnd="3dp"
-            android:paddingRight="3dp"
-            android:text="@string/get_scroll_position" />
+            android:text="@string/get_scroll_position"
+            tools:ignore="RtlSymmetry" />
 
         <TextView
             android:id="@+id/scroll_position"
             android:layout_width="wrap_content"
-            android:layout_height="wrap_content" />
+            android:layout_height="wrap_content"
+            tools:text="scroll_position" />
 
     </LinearLayout>
 
     <LinearLayout
+        android:id="@+id/second_text_line"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
         android:layout_below="@id/top_text_line"
-        android:layout_centerHorizontal="true"
         android:background="@android:color/white"
         android:padding="5dp">
 
         <TextView
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
-            android:paddingRight="3dp"
-            android:text="@string/get_zoomed_rect" />
+            android:paddingEnd="3dp"
+            android:text="@string/get_zoomed_rect"
+            tools:ignore="RtlSymmetry" />
 
         <TextView
             android:id="@+id/zoomed_rect"
@@ -54,6 +56,14 @@
 
     </LinearLayout>
 
+    <TextView
+        android:id="@+id/touchCoordinates"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_below="@id/second_text_line"
+        android:background="@android:color/white"
+        android:padding="5dp" />
+
     <TextView
         android:id="@+id/current_zoom"
         android:layout_width="wrap_content"

touchview/src/main/java/com/ortiz/touchview/OnTouchCoordinatesListener.kt

@@ -0,0 +1,9 @@
+package com.ortiz.touchview
+
+import android.graphics.PointF
+import android.view.MotionEvent
+import android.view.View
+
+interface OnTouchCoordinatesListener {
+    fun onTouchCoordinate(view: View, event: MotionEvent, bitmapPoint: PointF)
+}

touchview/src/main/java/com/ortiz/touchview/TouchImageView.kt

@@ -87,6 +87,7 @@ open class TouchImageView @JvmOverloads constructor(context: Context, attrs: Att
     private var prevMatchViewHeight = 0f
     private var scaleDetector: ScaleGestureDetector
     private var gestureDetector: GestureDetector
+    private var touchCoordinatesListener: OnTouchCoordinatesListener? = null
     private var doubleTapListener: OnDoubleTapListener? = null
     private var userTouchListener: OnTouchListener? = null
     private var touchImageViewListener: OnTouchImageViewListener? = null
@@ -139,6 +140,10 @@ open class TouchImageView @JvmOverloads constructor(context: Context, attrs: Att
         doubleTapListener = onDoubleTapListener
     }
 
+    fun setOnTouchCoordinatesListener(onTouchCoordinatesListener: OnTouchCoordinatesListener) {
+        touchCoordinatesListener = onTouchCoordinatesListener
+    }
+
     override fun setImageResource(resId: Int) {
         imageRenderedAtLeastOnce = false
         super.setImageResource(resId)
@@ -867,6 +872,11 @@ open class TouchImageView @JvmOverloads constructor(context: Context, attrs: Att
                 }
             }
 
+            touchCoordinatesListener?.let {
+                val bitmapPoint = transformCoordTouchToBitmap(event.x, event.y, true)
+                it.onTouchCoordinate(v, event, bitmapPoint)
+            }
+
             imageMatrix = touchMatrix
 
             // User-defined OnTouchListener