HomeWork 6

app/build.gradle

@@ -4,19 +4,23 @@ plugins {
 }
 
 android {
-    compileSdkVersion 30
-    buildToolsVersion "30.0.3"
-
+    compileSdk 34
+    buildToolsVersion '34.0.0'
+    namespace 'otus.homework.customview'
     defaultConfig {
         applicationId "otus.homework.customview"
         minSdkVersion 23
-        targetSdkVersion 30
+        targetSdkVersion 34
         versionCode 1
         versionName "1.0"
 
         testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
     }
 
+    buildFeatures {
+        viewBinding = true
+    }
+
     buildTypes {
         release {
             minifyEnabled false
@@ -39,6 +43,7 @@ dependencies {
     implementation 'androidx.appcompat:appcompat:1.2.0'
     implementation 'com.google.android.material:material:1.3.0'
     implementation 'androidx.constraintlayout:constraintlayout:2.0.4'
+    implementation 'com.google.code.gson:gson:2.10.1'
     testImplementation 'junit:junit:4.+'
     androidTestImplementation 'androidx.test.ext:junit:1.1.2'
     androidTestImplementation 'androidx.test.espresso:espresso-core:3.3.0'

app/src/main/AndroidManifest.xml

@@ -10,7 +10,8 @@
         android:roundIcon="@mipmap/ic_launcher_round"
         android:supportsRtl="true"
         android:theme="@style/Theme.CustomView">
-        <activity android:name=".MainActivity">
+        <activity android:name=".MainActivity"
+            android:exported="true">
             <intent-filter>
                 <action android:name="android.intent.action.MAIN" />
 

app/src/main/java/otus/homework/customview/Extensions.kt

@@ -0,0 +1,33 @@
+package otus.homework.customview
+
+import android.content.Context
+import android.graphics.Canvas
+import android.text.StaticLayout
+import android.util.TypedValue
+import androidx.core.graphics.withTranslation
+
+
+/**
+ * Context Extension для конвертирования значения в пиксели.
+ * @property dp - значение density-independent pixels
+ */
+fun Context.dpToPx(dp: Int): Float {
+    return dp.toFloat() * this.resources.displayMetrics.density
+}
+
+/**
+ * Context Extension для конвертирования значения размера шрифта в пиксели.
+ * @property sp - значение scale-independent pixels
+ */
+fun Context.spToPx(sp: Int): Float {
+    return TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_SP, sp.toFloat(), this.resources.displayMetrics);
+}
+
+/**
+ * StaticLayout Extension для удобства отрисовки текста.
+ */
+fun StaticLayout.draw(canvas: Canvas, x: Float, y: Float) {
+    canvas.withTranslation(x, y) {
+        draw(this)
+    }
+}

app/src/main/java/otus/homework/customview/LineChart/ColorRandomizer.kt

@@ -0,0 +1,22 @@
+package otus.homework.customview.LineChart
+import java.util.ArrayDeque
+
+internal class ColorRandomizer {
+
+    private val colorsList = listOf(
+        -0xbbcca, -0x16e19d, -0x63d850, -0x98c549,
+        -0xc0ae4b, -0xde690d, -0xfc560c, -0xff432c,
+        -0xff6978, -0xb350b0, -0x743cb6, -0x3223c7,
+        -0x14c5, -0x3ef9, -0x6800, -0xa8de,
+        -0x86aab8, -0x616162, -0x9f8275, -0xcccccd
+    )
+    private var colors = ArrayDeque(colorsList)
+
+    val color: Int
+        get() {
+            if (colors.size == 0) {
+                colors = ArrayDeque(colorsList.shuffled())
+            }
+            return colors.pop()
+        }
+}

app/src/main/java/otus/homework/customview/LineChart/LineGraphItem.kt

@@ -0,0 +1,8 @@
+package otus.homework.customview.LineChart
+
+import android.graphics.PointF
+
+data class LineGraphItem(
+    val points: List<PointF>,
+    val color: Int
+)