[app] implementations.

README.md

@@ -1,10 +1,19 @@
 Interactive Math Pad
 ====================
 
-![preview](https://raw.githubusercontent.com/jingkecn/myscript-iink-codelabs-android-kotlin/master/docs/images/app/math-pad/preview.gif)
+This is a reproduction of [MyScript MathPad](https://www.myscript.com/retired-apps) on Android platform, based on [MyScript Interactive Ink SDK](https://www.myscript.com/interactive-ink).
 
-> [!INFO]
-> This is a reproduction of the retired MyScript MathPad for Android.
+![preview](docs/images/preview.gif)
+
+> [!ACKNOWLEDGEMENTS]
+>
+> - [1] [MyScript Interactive Ink](https://www.myscript.com/interactive-ink)®
+> - [2] [中國色](http://zhongguose.com/)
 >
 > [!DISCLAIMER]
-> The software is for your study and reference only and the developer will not be responsible for its content.
+> **The software is for your study and reference only and the developer will not be responsible for its content.**
+
+LICENSE
+-------
+
+[MIT License](LICENSE).

app/src/main/java/com/myscript/iink/app/mathpad/MainActivity.kt

@@ -6,11 +6,111 @@ package com.myscript.iink.app.mathpad
 
 import android.os.Bundle
 import android.support.v7.app.AppCompatActivity
+import android.view.Menu
+import android.view.MenuItem
+import android.view.View
+import android.widget.Toast
+import com.myscript.iink.*
+import com.myscript.iink.extensions.convert
+import com.myscript.iink.extensions.copyToClipboard
+import com.myscript.iink.uireferenceimplementation.EditorView
+import com.myscript.iink.uireferenceimplementation.FontUtils
+import com.myscript.iink.uireferenceimplementation.InputController
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.GlobalScope
+import kotlinx.coroutines.launch
 
-class MainActivity : AppCompatActivity() {
+class MainActivity : AppCompatActivity(), IEditorListener {
+
+    private lateinit var contentPart: ContentPart
+    private lateinit var editorView: EditorView
 
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
         setContentView(R.layout.activity_main)
+        (application as? MyApplication)?.contentPackage?.let { initWith(it) }
+        editorView = findViewById<EditorView>(R.id.editor_view).also { initWith(it) }
+    }
+
+    private fun initWith(contentPackage: ContentPackage) = with(contentPackage) {
+        createPart("Math").let { contentPart = it }
+    }
+
+    private fun initWith(view: EditorView) = with(view) {
+        (application as? IInteractiveInkApplication)?.engine?.let {
+            setEngine(it)
+            editor?.addListener(this@MainActivity)
+            inputMode = InputController.INPUT_MODE_FORCE_PEN
+            setTypefaces(FontUtils.loadFontsFromAssets(applicationContext.assets))
+            post {
+                editor?.part = contentPart
+                visibility = View.VISIBLE
+            }
+        }
+    }
+
+    override fun onDestroy() {
+        editorView.close()
+        contentPart.close()
+        super.onDestroy()
     }
+
+    // region Implementations (options menu)
+
+    override fun onCreateOptionsMenu(menu: Menu?): Boolean {
+        menuInflater.inflate(R.menu.activity_main, menu)
+        return super.onCreateOptionsMenu(menu)
+    }
+
+    override fun onPrepareOptionsMenu(menu: Menu?): Boolean {
+        menu?.let {
+            editorView.editor?.run {
+                it.findItem(R.id.menu_clear)?.isEnabled = part?.isClosed == false
+                it.findItem(R.id.menu_redo)?.isEnabled = canRedo()
+                it.findItem(R.id.menu_undo)?.isEnabled = canUndo()
+            }
+        }
+        return super.onPrepareOptionsMenu(menu)
+    }
+
+    override fun onOptionsItemSelected(item: MenuItem?): Boolean {
+        editorView.editor?.let {
+            // wait for the editor to be idle.
+            if (!it.isIdle) it.waitForIdle()
+            when (item?.itemId) {
+                R.id.menu_clear -> it.clear()
+                R.id.menu_convert -> it.convert()
+                R.id.menu_redo -> it.redo()
+                R.id.menu_undo -> it.undo()
+                R.id.menu_export_latex -> it.copyToClipboard(this, MimeType.LATEX)
+                R.id.menu_export_math_ml -> it.copyToClipboard(this, MimeType.MATHML)
+                else -> return@let
+            }
+        }
+        return super.onOptionsItemSelected(item)
+    }
+
+    // endregion
+
+    // region Implementations (IEditorListener)
+
+    override fun contentChanged(editor: Editor?, blockIds: Array<out String>?) {
+        invalidateOptionsMenu()
+    }
+
+    override fun partChanging(editor: Editor?, old: ContentPart?, new: ContentPart?) {
+        invalidateOptionsMenu()
+    }
+
+    override fun partChanged(editor: Editor?) {
+        invalidateOptionsMenu()
+    }
+
+    override fun onError(editor: Editor?, blockId: String?, message: String?) {
+        GlobalScope.launch(Dispatchers.Main) {
+            Toast.makeText(this@MainActivity, message, Toast.LENGTH_LONG).show()
+        }
+    }
+
+    // endregion
 }

app/src/main/java/com/myscript/iink/app/mathpad/MyApplication.kt

@@ -6,6 +6,7 @@ package com.myscript.iink.app.mathpad
 
 import android.app.Application
 import com.myscript.certificate.MyCertificate
+import com.myscript.iink.ContentPackage
 import com.myscript.iink.Engine
 import java.io.File
 
@@ -15,6 +16,9 @@ class MyApplication : Application(), IInteractiveInkApplication {
     override lateinit var engine: Engine
         private set
 
+    lateinit var contentPackage: ContentPackage
+        private set
+
     override fun onCreate() {
         super.onCreate()
         // Create MyScript interactive ink engine.
@@ -33,11 +37,21 @@ class MyApplication : Application(), IInteractiveInkApplication {
                 it.setString("content-package.temp-folder", "${filesDir.path}${File.separator}tmp")
             }
         }
+        val myPackageFile = File(filesDir, "$IINK_PACKAGE_NAME.iink")
+        try {
+            contentPackage = engine.createPackage(myPackageFile)
+        } catch (e: Exception) {
+            e.printStackTrace()
+        }
     }
 
     override fun onTerminate() {
-        // close MyScript iink runtime to release resources.
+        contentPackage.close()
         engine.close()
         super.onTerminate()
     }
+
+    companion object {
+        private const val IINK_PACKAGE_NAME = "my_math_pad_package"
+    }
 }

app/src/main/java/com/myscript/iink/extensions/Editor.kt

@@ -0,0 +1,33 @@
+/*
+ * Copyright (c) MyScript. All rights reserved.
+ */
+
+package com.myscript.iink.extensions
+
+import android.content.ClipData
+import android.content.ClipboardManager
+import android.content.Context
+import android.support.annotation.NonNull
+import android.widget.Toast
+import com.myscript.iink.Editor
+import com.myscript.iink.MimeType
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.GlobalScope
+import kotlinx.coroutines.launch
+
+fun Editor.convert() =
+    getSupportedTargetConversionStates(null).firstOrNull()?.let { convert(null, it) }
+
+fun Editor.copyToClipboard(@NonNull context: Context, type: MimeType) =
+    export_(null, type).let {
+        GlobalScope.launch(Dispatchers.Main) {
+            (context.getSystemService(Context.CLIPBOARD_SERVICE) as? ClipboardManager)?.run {
+                primaryClip = ClipData.newPlainText(type.name, it)
+                Toast.makeText(
+                    context,
+                    "String ($type) copied to clipboard:\n$it",
+                    Toast.LENGTH_LONG
+                ).show()
+            }
+        }
+    }

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

@@ -5,57 +5,60 @@
 <vector xmlns:android="http://schemas.android.com/apk/res/android"
     android:width="108dp"
     android:height="108dp"
-    android:viewportWidth="320"
-    android:viewportHeight="320">
+    android:viewportWidth="1024"
+    android:viewportHeight="1024">
     <path
-        android:fillColor="#009FE3"
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+        android:fillColor="#000000"
+        android:pathData="M280.62,309.23L280.62,293.77L541.24,293.77L570.54,394.31L552.02,394.31L532.57,335.72Q528.59,323.53 519.68,318.61Q511.01,313.45 484.52,313.45L367.1,313.45L507.49,496.97L507.49,506.58L352.34,665.95L539.37,665.95Q549.45,665.95 552.96,662.91Q556.71,659.86 558.82,650.95L574.05,597.28L592.57,597.28L555.77,731.11L279.68,731.11L279.68,714.47L453.12,537.28L280.62,309.23Z" />
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+        android:pathData="M605,435.1l-0.4,-2.7c-1.7,0.1 -2.8,1.1 -3.5,2.4l-0.3,-2.2h-2.3v10.8h2.7v-6.2c0.8,-1.2 2.2,-2.1 3.8,-2.1z" />
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         android:fillColor="#000000"
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+        android:pathData="M613.6,443.1v4.1l-2.7,0.4v-15h2.3l0.2,1.5c0.8,-0.9 1.8,-1.7 3.3,-1.7c2.3,0 4.1,1.7 4.1,5.3c0,4 -2.2,5.8 -4.7,5.8c-1,0 -1.9,-0.2 -2.5,-0.4zM616,434.7c-1,0 -1.7,0.6 -2.4,1.5v4.6c0.6,0.3 1.2,0.5 2.1,0.5c1.4,0 2.4,-1.1 2.4,-3.5c0,-2 -0.9,-3.1 -2.1,-3.1z" />
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+        android:pathData="M628,443.5l-0.3,-2.3c-0.2,0.1 -0.5,0.1 -0.8,0.1c-1,0 -1.4,-0.4 -1.4,-1.3v-5.1h2.5l-0.3,-2.2h-2.2v-3.8l-2.6,0.4v3.4h-1.5v2.2h1.5v5.5c0,2.4 1.5,3.2 3.6,3.2c0.8,0 1.3,-0.1 1.5,-0.1z" />
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app/src/main/res/drawable/ic_clear.xml

@@ -0,0 +1,14 @@
+<!--
+  ~ Copyright (c) MyScript. All rights reserved.
+  -->
+
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:tint="?android:attr/colorControlNormal"
+    android:viewportWidth="24.0"
+    android:viewportHeight="24.0">
+    <path
+        android:fillColor="#FF000000"
+        android:pathData="M6,19c0,1.1 0.9,2 2,2h8c1.1,0 2,-0.9 2,-2V7H6v12zM19,4h-3.5l-1,-1h-5l-1,1H5v2h14V4z" />
+</vector>