Add pointer input, clean up, add icon

.idea/gradle.xml

@@ -1,5 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project version="4">
+  <component name="GradleMigrationSettings" migrationVersion="1" />
   <component name="GradleSettings">
     <option name="linkedExternalProjectsSettings">
       <GradleProjectSettings>

.idea/misc.xml

@@ -4,6 +4,7 @@
     <option name="filePathToZoomLevelMap">
       <map>
         <entry key="../../../../../layout/compose-model-1647938366739.xml" value="0.34881756756756754" />
+        <entry key="app/src/main/res/drawable/ic_launcher_foreground.xml" value="0.247" />
       </map>
     </option>
   </component>

.idea/vcs.xml

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="VcsDirectoryMappings">
+    <mapping directory="$PROJECT_DIR$" vcs="Git" />
+  </component>
+</project>

app/src/androidTest/java/eu/wewox/pagecurl/ExampleInstrumentedTest.kt

@@ -1,24 +0,0 @@
-package eu.wewox.pagecurl
-
-import androidx.test.platform.app.InstrumentationRegistry
-import androidx.test.ext.junit.runners.AndroidJUnit4
-
-import org.junit.Test
-import org.junit.runner.RunWith
-
-import org.junit.Assert.*
-
-/**
- * Instrumented test, which will execute on an Android device.
- *
- * See [testing documentation](http://d.android.com/tools/testing).
- */
-@RunWith(AndroidJUnit4::class)
-class ExampleInstrumentedTest {
-    @Test
-    fun useAppContext() {
-        // Context of the app under test.
-        val appContext = InstrumentationRegistry.getInstrumentation().targetContext
-        assertEquals("eu.wewox.pagecurl", appContext.packageName)
-    }
-}

app/src/main/java/eu/wewox/pagecurl/page/CurlDraw.kt

@@ -0,0 +1,79 @@
+package eu.wewox.pagecurl.page
+
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.draw.drawWithContent
+import androidx.compose.ui.geometry.Offset
+import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.graphics.Path
+import androidx.compose.ui.graphics.drawscope.clipPath
+import androidx.compose.ui.graphics.drawscope.rotateRad
+import androidx.compose.ui.graphics.drawscope.withTransform
+import java.lang.Float.max
+import kotlin.math.atan2
+
+fun Modifier.drawCurl(
+    posA: Offset?,
+    posB: Offset?,
+): Modifier = drawWithContent {
+    if (posA == null || posB == null) {
+        drawContent()
+        return@drawWithContent
+    }
+
+    val topIntersection = lineLineIntersection(
+        Offset(0f, 0f), Offset(size.width, 0f),
+        posA, posB
+    )
+    val bottomIntersection = lineLineIntersection(
+        Offset(0f, size.height), Offset(size.width, size.height),
+        posA, posB
+    )
+    if (topIntersection == null || bottomIntersection == null) {
+        drawContent()
+        return@drawWithContent
+    }
+
+    val topCurlOffset = Offset(max(0f, topIntersection.x), topIntersection.y)
+    val bottomCurlOffset = Offset(max(0f, bottomIntersection.x), bottomIntersection.y)
+
+    val lineVector = topCurlOffset - bottomCurlOffset
+
+    val path = Path()
+    path.lineTo(topCurlOffset.x, topCurlOffset.y)
+    path.lineTo(bottomCurlOffset.x, bottomCurlOffset.y)
+    path.lineTo(0f, size.height)
+    clipPath(path) { this@drawWithContent.drawContent() }
+
+    withTransform({
+        scale(-1f, 1f, pivot = bottomCurlOffset)
+
+        val angle = atan2(-lineVector.y, lineVector.x)
+        rotateRad(Math.PI.toFloat() + 2 * angle, pivot = bottomCurlOffset)
+
+        val path2 = Path()
+        path2.moveTo(topCurlOffset.x, topCurlOffset.y)
+        path2.lineTo(max(size.width, topCurlOffset.x), topCurlOffset.y)
+        path2.lineTo(max(size.width, bottomCurlOffset.x), bottomCurlOffset.y)
+        path2.lineTo(bottomCurlOffset.x, bottomCurlOffset.y)
+        clipPath(path2)
+    }) {
+        this@drawWithContent.drawContent()
+        drawRect(Color.White.copy(alpha = 0.8f))
+    }
+}
+
+private fun lineLineIntersection(
+    line1a: Offset,
+    line1b: Offset,
+    line2a: Offset,
+    line2b: Offset,
+): Offset? {
+    val denominator = (line1a.x - line1b.x) * (line2a.y - line2b.y) - (line1a.y - line1b.y) * (line2a.x - line2b.x)
+    if (denominator == 0f) return null
+
+    val x = ((line1a.x * line1b.y - line1a.y * line1b.x) * (line2a.x - line2b.x) -
+            (line1a.x - line1b.x) * (line2a.x * line2b.y - line2a.y * line2b.x)) / denominator
+    val y = ((line1a.x * line1b.y - line1a.y * line1b.x) * (line2a.y - line2b.y) -
+            (line1a.y - line1b.y) * (line2a.x * line2b.y - line2a.y * line2b.x)) / denominator
+    return Offset(x, y)
+}

app/src/main/java/eu/wewox/pagecurl/page/CurlGesture.kt

@@ -0,0 +1,29 @@
+package eu.wewox.pagecurl.page
+
+import androidx.compose.foundation.gestures.awaitFirstDown
+import androidx.compose.foundation.gestures.forEachGesture
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.geometry.Offset
+import androidx.compose.ui.input.pointer.pointerInput
+import androidx.compose.ui.input.pointer.positionChangeConsumed
+
+fun Modifier.curlGesture(
+    onCurl: (Offset, Offset) -> Unit,
+    onCancel: () -> Unit,
+): Modifier = pointerInput(true) {
+    forEachGesture {
+        awaitPointerEventScope {
+            awaitFirstDown(requireUnconsumed = false)
+            do {
+                val event = awaitPointerEvent()
+                val canceled = event.changes.any { it.positionChangeConsumed() }
+                val posA = event.changes.getOrNull(0)?.position
+                val posB = event.changes.getOrNull(1)?.position
+                if (posA != null && posB != null) {
+                    onCurl(posA, posB)
+                }
+            } while (!canceled && event.changes.any { it.pressed })
+            onCancel()
+        }
+    }
+}

app/src/main/java/eu/wewox/pagecurl/page/Page.kt

@@ -1,11 +1,6 @@
 package eu.wewox.pagecurl.page
 
-import androidx.compose.animation.core.FastOutSlowInEasing
+import androidx.compose.foundation.Image
-import androidx.compose.animation.core.RepeatMode
-import androidx.compose.animation.core.animateFloat
-import androidx.compose.animation.core.infiniteRepeatable
-import androidx.compose.animation.core.rememberInfiniteTransition
-import androidx.compose.animation.core.tween
 import androidx.compose.foundation.background
 import androidx.compose.foundation.layout.Box
 import androidx.compose.foundation.layout.fillMaxSize
@@ -13,17 +8,17 @@ import androidx.compose.foundation.layout.padding
 import androidx.compose.material.Text
 import androidx.compose.runtime.Composable
 import androidx.compose.runtime.getValue
+import androidx.compose.runtime.mutableStateOf
+import androidx.compose.runtime.remember
+import androidx.compose.runtime.setValue
 import androidx.compose.ui.Modifier
-import androidx.compose.ui.draw.drawWithContent
 import androidx.compose.ui.geometry.Offset
-import androidx.compose.ui.geometry.Size
-import androidx.compose.ui.graphics.Brush
 import androidx.compose.ui.graphics.Color
-import androidx.compose.ui.graphics.Path
+import androidx.compose.ui.layout.ContentScale
-import androidx.compose.ui.graphics.drawscope.clipPath
+import androidx.compose.ui.res.painterResource
-import androidx.compose.ui.graphics.drawscope.withTransform
 import androidx.compose.ui.unit.dp
 import androidx.compose.ui.unit.sp
+import eu.wewox.pagecurl.R
 import eu.wewox.pagecurl.utils.Data
 
 @Composable
@@ -37,80 +32,37 @@ fun Page() {
             .padding(16.dp)
     )
 
-    val infiniteTransition = rememberInfiniteTransition()
+    var posA by remember { mutableStateOf<Offset?>(null) }
-    val progress by infiniteTransition.animateFloat(
+    var posB by remember { mutableStateOf<Offset?>(null) }
-        initialValue = 0.05f,
+
-        targetValue = 0.95f,
-        animationSpec = infiniteRepeatable(
-            animation = tween(2000, easing = FastOutSlowInEasing),
-            repeatMode = RepeatMode.Reverse
-        )
-    )
     Box(
         Modifier
-            .drawWithContent {
+            .curlGesture(
-                val curlWidth = size.width * progress
+                onCurl = { a, b ->
-
+                    posA = a
-                val midX = size.width - curlWidth
+                    posB = b
-                val path = Path()
+                },
-                path.lineTo(midX, 0f)
+                onCancel = {
-                path.lineTo(midX, size.height)
+                    posA = null
-                path.lineTo(0f, size.height)
+                    posB = null
-                clipPath(path) { this@drawWithContent.drawContent() }
-
-                drawLine(
-                    Brush.horizontalGradient(
-                        listOf(Color.Black.copy(alpha = 0.5f), Color.Black.copy(alpha = 0f)),
-                        midX - curlWidth * 0.8f + 40f,
-                        midX - curlWidth * 0.8f - 40f
-                    ),
-                    Offset(midX - curlWidth * 0.8f, size.height),
-                    Offset(midX - curlWidth * 0.8f, 0f),
-                    80f
-                )
-
-                drawLine(
-                    Brush.horizontalGradient(
-                        listOf(Color.Black.copy(alpha = 0.5f), Color.Black.copy(alpha = 0f)),
-                        midX - 30f,
-                        midX + 30f
-                    ),
-                    Offset(midX, size.height),
-                    Offset(midX, 0f),
-                    60f
-                )
-
-                drawRect(
-                    Color.White,
-                    topLeft = Offset(midX - curlWidth * 0.8f, 0f),
-                    size = Size(curlWidth * 0.8f, size.height)
-                )
-
-
-                withTransform({
-                    scale(-1f, 1f)
-                    clipRect(size.width - midX + curlWidth * 0.8f, 0f, size.width - midX, size.height)
-                    translate(-midX + curlWidth * 0.8f)
-                }) {
-                    this@drawWithContent.drawContent()
-                    drawRect(Color.White.copy(alpha = 0.8f))
                 }
-            }
+            )
+            .drawCurl(posA, posB)
     ) {
-        Text(
+        //        Text(
-            text = Data.Lorem1,
+        //            text = Data.Lorem1,
-            fontSize = 22.sp,
+        //            fontSize = 22.sp,
-            modifier = Modifier
-                .fillMaxSize()
-                .background(Color.White)
-                .padding(16.dp)
-        )
-        //        Image(
-        //            painter = painterResource(R.drawable.img_sleep),
-        //            contentDescription = null,
-        //            contentScale = ContentScale.Crop,
         //            modifier = Modifier
         //                .fillMaxSize()
+        //                .background(Color.White)
+        //                .padding(16.dp)
         //        )
+        Image(
+            painter = painterResource(R.drawable.img_sleep),
+            contentDescription = null,
+            contentScale = ContentScale.Crop,
+            modifier = Modifier
+                .fillMaxSize()
+        )
     }
 }

app/src/main/res/drawable-v24/ic_launcher_foreground.xml

@@ -1,30 +0,0 @@
-<vector xmlns:android="http://schemas.android.com/apk/res/android"
-    xmlns:aapt="http://schemas.android.com/aapt"
-    android:width="108dp"
-    android:height="108dp"
-    android:viewportWidth="108"
-    android:viewportHeight="108">
-    <path android:pathData="M31,63.928c0,0 6.4,-11 12.1,-13.1c7.2,-2.6 26,-1.4 26,-1.4l38.1,38.1L107,108.928l-32,-1L31,63.928z">
-        <aapt:attr name="android:fillColor">
-            <gradient
-                android:endX="85.84757"
-                android:endY="92.4963"
-                android:startX="42.9492"
-                android:startY="49.59793"
-                android:type="linear">
-                <item
-                    android:color="#44000000"
-                    android:offset="0.0" />
-                <item
-                    android:color="#00000000"
-                    android:offset="1.0" />
-            </gradient>
-        </aapt:attr>
-    </path>
-    <path
-        android:fillColor="#FFFFFF"
-        android:fillType="nonZero"
-        android:pathData="M65.3,45.828l3.8,-6.6c0.2,-0.4 0.1,-0.9 -0.3,-1.1c-0.4,-0.2 -0.9,-0.1 -1.1,0.3l-3.9,6.7c-6.3,-2.8 -13.4,-2.8 -19.7,0l-3.9,-6.7c-0.2,-0.4 -0.7,-0.5 -1.1,-0.3C38.8,38.328 38.7,38.828 38.9,39.228l3.8,6.6C36.2,49.428 31.7,56.028 31,63.928h46C76.3,56.028 71.8,49.428 65.3,45.828zM43.4,57.328c-0.8,0 -1.5,-0.5 -1.8,-1.2c-0.3,-0.7 -0.1,-1.5 0.4,-2.1c0.5,-0.5 1.4,-0.7 2.1,-0.4c0.7,0.3 1.2,1 1.2,1.8C45.3,56.528 44.5,57.328 43.4,57.328L43.4,57.328zM64.6,57.328c-0.8,0 -1.5,-0.5 -1.8,-1.2s-0.1,-1.5 0.4,-2.1c0.5,-0.5 1.4,-0.7 2.1,-0.4c0.7,0.3 1.2,1 1.2,1.8C66.5,56.528 65.6,57.328 64.6,57.328L64.6,57.328z"
-        android:strokeWidth="1"
-        android:strokeColor="#00000000" />
-</vector>

app/src/main/res/drawable/ic_launcher_background.xml

@@ -1,170 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<vector xmlns:android="http://schemas.android.com/apk/res/android"
-    android:width="108dp"
-    android:height="108dp"
-    android:viewportWidth="108"
-    android:viewportHeight="108">
-    <path
-        android:fillColor="#3DDC84"
-        android:pathData="M0,0h108v108h-108z" />
-    <path
-        android:fillColor="#00000000"
-        android:pathData="M9,0L9,108"
-        android:strokeWidth="0.8"
-        android:strokeColor="#33FFFFFF" />
-    <path
-        android:fillColor="#00000000"
-        android:pathData="M19,0L19,108"
-        android:strokeWidth="0.8"
-        android:strokeColor="#33FFFFFF" />
-    <path
-        android:fillColor="#00000000"
-        android:pathData="M29,0L29,108"
-        android:strokeWidth="0.8"
-        android:strokeColor="#33FFFFFF" />
-    <path
-        android:fillColor="#00000000"
-        android:pathData="M39,0L39,108"
-        android:strokeWidth="0.8"
-        android:strokeColor="#33FFFFFF" />
-    <path
-        android:fillColor="#00000000"
-        android:pathData="M49,0L49,108"
-        android:strokeWidth="0.8"
-        android:strokeColor="#33FFFFFF" />
-    <path
-        android:fillColor="#00000000"
-        android:pathData="M59,0L59,108"
-        android:strokeWidth="0.8"
-        android:strokeColor="#33FFFFFF" />
-    <path
-        android:fillColor="#00000000"
-        android:pathData="M69,0L69,108"
-        android:strokeWidth="0.8"
-        android:strokeColor="#33FFFFFF" />
-    <path
-        android:fillColor="#00000000"
-        android:pathData="M79,0L79,108"
-        android:strokeWidth="0.8"
-        android:strokeColor="#33FFFFFF" />
-    <path
-        android:fillColor="#00000000"
-        android:pathData="M89,0L89,108"
-        android:strokeWidth="0.8"
-        android:strokeColor="#33FFFFFF" />
-    <path
-        android:fillColor="#00000000"
-        android:pathData="M99,0L99,108"
-        android:strokeWidth="0.8"
-        android:strokeColor="#33FFFFFF" />
-    <path
-        android:fillColor="#00000000"
-        android:pathData="M0,9L108,9"
-        android:strokeWidth="0.8"
-        android:strokeColor="#33FFFFFF" />
-    <path
-        android:fillColor="#00000000"
-        android:pathData="M0,19L108,19"
-        android:strokeWidth="0.8"
-        android:strokeColor="#33FFFFFF" />
-    <path
-        android:fillColor="#00000000"
-        android:pathData="M0,29L108,29"
-        android:strokeWidth="0.8"
-        android:strokeColor="#33FFFFFF" />
-    <path
-        android:fillColor="#00000000"
-        android:pathData="M0,39L108,39"
-        android:strokeWidth="0.8"
-        android:strokeColor="#33FFFFFF" />
-    <path
-        android:fillColor="#00000000"
-        android:pathData="M0,49L108,49"
-        android:strokeWidth="0.8"
-        android:strokeColor="#33FFFFFF" />
-    <path
-        android:fillColor="#00000000"
-        android:pathData="M0,59L108,59"
-        android:strokeWidth="0.8"
-        android:strokeColor="#33FFFFFF" />
-    <path
-        android:fillColor="#00000000"
-        android:pathData="M0,69L108,69"
-        android:strokeWidth="0.8"
-        android:strokeColor="#33FFFFFF" />
-    <path
-        android:fillColor="#00000000"
-        android:pathData="M0,79L108,79"
-        android:strokeWidth="0.8"
-        android:strokeColor="#33FFFFFF" />
-    <path
-        android:fillColor="#00000000"
-        android:pathData="M0,89L108,89"
-        android:strokeWidth="0.8"
-        android:strokeColor="#33FFFFFF" />
-    <path
-        android:fillColor="#00000000"
-        android:pathData="M0,99L108,99"
-        android:strokeWidth="0.8"
-        android:strokeColor="#33FFFFFF" />
-    <path
-        android:fillColor="#00000000"
-        android:pathData="M19,29L89,29"
-        android:strokeWidth="0.8"
-        android:strokeColor="#33FFFFFF" />
-    <path
-        android:fillColor="#00000000"
-        android:pathData="M19,39L89,39"
-        android:strokeWidth="0.8"
-        android:strokeColor="#33FFFFFF" />
-    <path
-        android:fillColor="#00000000"
-        android:pathData="M19,49L89,49"
-        android:strokeWidth="0.8"
-        android:strokeColor="#33FFFFFF" />
-    <path
-        android:fillColor="#00000000"
-        android:pathData="M19,59L89,59"
-        android:strokeWidth="0.8"
-        android:strokeColor="#33FFFFFF" />
-    <path
-        android:fillColor="#00000000"
-        android:pathData="M19,69L89,69"
-        android:strokeWidth="0.8"
-        android:strokeColor="#33FFFFFF" />
-    <path
-        android:fillColor="#00000000"
-        android:pathData="M19,79L89,79"
-        android:strokeWidth="0.8"
-        android:strokeColor="#33FFFFFF" />
-    <path
-        android:fillColor="#00000000"
-        android:pathData="M29,19L29,89"
-        android:strokeWidth="0.8"
-        android:strokeColor="#33FFFFFF" />
-    <path
-        android:fillColor="#00000000"
-        android:pathData="M39,19L39,89"
-        android:strokeWidth="0.8"
-        android:strokeColor="#33FFFFFF" />
-    <path
-        android:fillColor="#00000000"
-        android:pathData="M49,19L49,89"
-        android:strokeWidth="0.8"
-        android:strokeColor="#33FFFFFF" />
-    <path
-        android:fillColor="#00000000"
-        android:pathData="M59,19L59,89"
-        android:strokeWidth="0.8"
-        android:strokeColor="#33FFFFFF" />
-    <path
-        android:fillColor="#00000000"
-        android:pathData="M69,19L69,89"
-        android:strokeWidth="0.8"
-        android:strokeColor="#33FFFFFF" />
-    <path
-        android:fillColor="#00000000"
-        android:pathData="M79,19L79,89"
-        android:strokeWidth="0.8"
-        android:strokeColor="#33FFFFFF" />
-</vector>

app/src/main/res/drawable/ic_launcher_foreground.xml

@@ -0,0 +1,27 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="108dp"
+    android:height="108dp"
+    android:viewportWidth="108"
+    android:viewportHeight="108">
+    <group
+        android:scaleX="2.475"
+        android:scaleY="2.475"
+        android:translateX="34.2"
+        android:translateY="34.2">
+        <path
+            android:fillColor="#FFF281"
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+            android:strokeWidth="0.75"
+            android:strokeColor="#000000" />
+        <path
+            android:fillColor="#FFF9C2"
+            android:pathData="M10,6.375H15.5902C15.5151,6.7764 15.3206,7.1491 15.0277,7.4419L11.7348,10.7348L7.4419,15.0277C7.1491,15.3206 6.7764,15.5151 6.375,15.5902V10C6.375,7.998 7.998,6.375 10,6.375Z"
+            android:strokeWidth="0.75"
+            android:strokeColor="#000000" />
+        <path
+            android:fillColor="#6DD3FF"
+            android:pathData="M7.4057,15.1246L15.1251,7.4053V11.4979C15.1251,13.4994 13.503,15.1221 11.5016,15.1229L7.4057,15.1246Z"
+            android:strokeWidth="0.75"
+            android:strokeColor="#000000" />
+    </group>
+</vector>

app/src/main/res/mipmap-anydpi-v26/ic_launcher.xml

@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
 <adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
-    <background android:drawable="@drawable/ic_launcher_background" />
+    <background android:drawable="@color/ic_launcher_background" />
     <foreground android:drawable="@drawable/ic_launcher_foreground" />
 </adaptive-icon>

app/src/main/res/mipmap-anydpi-v26/ic_launcher_round.xml

@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
 <adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
-    <background android:drawable="@drawable/ic_launcher_background" />
+    <background android:drawable="@color/ic_launcher_background" />
     <foreground android:drawable="@drawable/ic_launcher_foreground" />
 </adaptive-icon>

app/src/main/res/values/ic_launcher_background.xml

@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <color name="ic_launcher_background">#FFFFFF</color>
+</resources>

app/src/test/java/eu/wewox/pagecurl/ExampleUnitTest.kt

@@ -1,17 +0,0 @@
-package eu.wewox.pagecurl
-
-import org.junit.Test
-
-import org.junit.Assert.*
-
-/**
- * Example local unit test, which will execute on the development machine (host).
- *
- * See [testing documentation](http://d.android.com/tools/testing).
- */
-class ExampleUnitTest {
-    @Test
-    fun addition_isCorrect() {
-        assertEquals(4, 2 + 2)
-    }
-}