Remove react-native; rewrite main screen in (native) swift

core/src/commonMain/kotlin/org/isoron/uhabits/Backend.kt

@@ -19,16 +19,19 @@
 
 package org.isoron.uhabits
 
+import org.isoron.uhabits.gui.*
 import org.isoron.uhabits.models.*
 import org.isoron.uhabits.utils.*
 
-class Backend(var databaseOpener: DatabaseOpener,
-              var fileOpener: FileOpener,
-              var log: Log) {
 
-    var database: Database
-    var habitsRepository: HabitRepository
-    var habits = mutableMapOf<Int, Habit>()
+class Backend(databaseOpener: DatabaseOpener,
+              fileOpener: FileOpener,
+              log: Log) {
+
+    private var database: Database
+    private var habitsRepository: HabitRepository
+    private var habits = mutableMapOf<Int, Habit>()
+    var theme: Theme = LightTheme()
 
     init {
         val dbFile = fileOpener.openUserFile("uhabits.db")
@@ -39,11 +42,14 @@ class Backend(var databaseOpener: DatabaseOpener,
     }
 
     fun getHabitList(): List<Map<String, *>> {
-        return habits.values.sortedBy { h -> h.position }.map { h ->
-            mapOf("key" to h.id.toString(),
-                  "name" to h.name,
-                  "color" to h.color.paletteIndex)
-        }
+        return habits.values
+                .filter { h -> !h.isArchived }
+                .sortedBy { h -> h.position }
+                .map { h ->
+                    mapOf("key" to h.id.toString(),
+                          "name" to h.name,
+                          "color" to h.color.index)
+                }
     }
 
     fun createHabit(name: String) {
@@ -52,7 +58,7 @@ class Backend(var databaseOpener: DatabaseOpener,
                           name = name,
                           description = "",
                           frequency = Frequency(1, 1),
-                          color = Color(3),
+                          color = PaletteColor(3),
                           isArchived = false,
                           position = habits.size,
                           unit = "",

core/src/commonMain/kotlin/org/isoron/uhabits/gui/Canvas.kt

@@ -0,0 +1,45 @@
+/*
+ * Copyright (C) 2016-2019 Álinson Santos Xavier <[email protected]>
+ *
+ * This file is part of Loop Habit Tracker.
+ *
+ * Loop Habit Tracker is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by the
+ * Free Software Foundation, either version 3 of the License, or (at your
+ * option) any later version.
+ *
+ * Loop Habit Tracker is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package org.isoron.uhabits.gui
+
+enum class Font {
+    REGULAR,
+    BOLD,
+    FONT_AWESOME
+}
+
+interface Canvas {
+    fun setColor(color: Color)
+    fun drawLine(x1: Double, y1: Double, x2: Double, y2: Double)
+    fun drawText(text: String, x: Double, y: Double)
+    fun fillRect(x: Double, y: Double, width: Double, height: Double)
+    fun drawRect(x: Double, y: Double, width: Double, height: Double)
+    fun getHeight(): Double
+    fun getWidth(): Double
+    fun setFont(font: Font)
+    fun setTextSize(size: Double)
+    fun setStrokeWidth(size: Double)
+    fun fillArc(centerX: Double,
+                centerY: Double,
+                radius: Double,
+                startAngle: Double,
+                swipeAngle: Double)
+    fun fillCircle(centerX: Double, centerY: Double, radius: Double)
+}

react-native/src/helpers/Backend.js → core/src/commonMain/kotlin/org/isoron/uhabits/gui/Colors.kt

@@ -17,19 +17,13 @@
  * with this program. If not, see <http://www.gnu.org/licenses/>.
  */
 
-import {
-  NativeEventEmitter,
-  DeviceEventEmitter,
-  NativeModules,
-  Platform,
-} from 'react-native';
+package org.isoron.uhabits.gui
 
-const { CoreModule } = NativeModules;
+data class PaletteColor(val index: Int)
 
-let emitter = DeviceEventEmitter;
-if (Platform.OS === 'ios') {
-  emitter = new NativeEventEmitter(CoreModule);
+class Color(val argb: Int) {
+    val alpha = 1.0
+    val red   = ((argb shr 16) and 0xFF) / 255.0
+    val green = ((argb shr 8 ) and 0xFF) / 255.0
+    val blue  = ((argb shr 0 ) and 0xFF) / 255.0
 }
-
-export const Emitter = emitter;
-export const Backend = NativeModules.CoreModule;

core/src/commonMain/kotlin/org/isoron/uhabits/models/Timestamp.kt → core/src/commonMain/kotlin/org/isoron/uhabits/gui/FontAwesome.kt

@@ -17,6 +17,11 @@
  * with this program. If not, see <http://www.gnu.org/licenses/>.
  */
 
-package org.isoron.uhabits.models
+package org.isoron.uhabits.gui
 
-class Timestamp(val unixTime: Long)
+class FontAwesome {
+    companion object {
+        val CHECK = "\uf00c"
+        val TIMES = "\uf00d"
+    }
+}

core/src/commonMain/kotlin/org/isoron/uhabits/gui/Themes.kt

@@ -0,0 +1,68 @@
+/*
+ * Copyright (C) 2016-2019 Álinson Santos Xavier <[email protected]>
+ *
+ * This file is part of Loop Habit Tracker.
+ *
+ * Loop Habit Tracker is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by the
+ * Free Software Foundation, either version 3 of the License, or (at your
+ * option) any later version.
+ *
+ * Loop Habit Tracker is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package org.isoron.uhabits.gui
+
+abstract class Theme {
+    val toolbarColor = Color(0xffffff)
+
+    val lowContrastTextColor = Color(0xe0e0e0)
+    val mediumContrastTextColor = Color(0x808080)
+    val highContrastTextColor = Color(0x202020)
+
+    val cardBackgroundColor = Color(0xFFFFFF)
+    val appBackgroundColor = Color(0xf4f4f4)
+    val toolbarBackgroundColor = Color(0xf4f4f4)
+    val statusBarBackgroundColor = Color(0x333333)
+
+    val headerBackgroundColor = Color(0xeeeeee)
+    val headerBorderColor = Color(0xcccccc)
+    val headerTextColor = mediumContrastTextColor
+
+    val itemBackgroundColor = Color(0xffffff)
+
+    fun color(paletteIndex: Int): Color {
+        return when (paletteIndex) {
+            0 -> Color(0xD32F2F)
+            1 -> Color(0x512DA8)
+            2 -> Color(0xF57C00)
+            3 -> Color(0xFF8F00)
+            4 -> Color(0xF9A825)
+            5 -> Color(0xAFB42B)
+            6 -> Color(0x7CB342)
+            7 -> Color(0x388E3C)
+            8 -> Color(0x00897B)
+            9 -> Color(0x00ACC1)
+            10 -> Color(0x039BE5)
+            11 -> Color(0x1976D2)
+            12 -> Color(0x303F9F)
+            13 -> Color(0x5E35B1)
+            14 -> Color(0x8E24AA)
+            15 -> Color(0xD81B60)
+            16 -> Color(0x5D4037)
+            else -> Color(0x000000)
+        }
+    }
+
+    val checkmarkButtonSize = 48.0
+    val smallTextSize = 12.0
+    val regularTextSize = 17.0
+}
+
+class LightTheme : Theme()

core/src/commonMain/kotlin/org/isoron/uhabits/gui/components/CheckmarkButton.kt

@@ -0,0 +1,41 @@
+/*
+ * Copyright (C) 2016-2019 Álinson Santos Xavier <[email protected]>
+ *
+ * This file is part of Loop Habit Tracker.
+ *
+ * Loop Habit Tracker is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by the
+ * Free Software Foundation, either version 3 of the License, or (at your
+ * option) any later version.
+ *
+ * Loop Habit Tracker is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package org.isoron.uhabits.gui.components.HabitList
+
+import org.isoron.uhabits.gui.*
+import org.isoron.uhabits.gui.components.*
+
+class CheckmarkButton(private val value: Int,
+                      private val color: Color,
+                      private val theme: Theme) : Component {
+    override fun draw(canvas: Canvas) {
+        canvas.setFont(Font.FONT_AWESOME)
+        canvas.setTextSize(theme.smallTextSize * 1.5)
+        canvas.setColor(when (value) {
+                            2 -> color
+                            else -> theme.lowContrastTextColor
+                        })
+        val text = when (value) {
+            0 -> FontAwesome.TIMES
+            else -> FontAwesome.CHECK
+        }
+        canvas.drawText(text, canvas.getWidth() / 2.0, canvas.getHeight() / 2.0)
+    }
+}

core/src/commonMain/kotlin/org/isoron/uhabits/models/Color.kt → core/src/commonMain/kotlin/org/isoron/uhabits/gui/components/Component.kt

@@ -17,6 +17,10 @@
  * with this program. If not, see <http://www.gnu.org/licenses/>.
  */
 
-package org.isoron.uhabits.models
+package org.isoron.uhabits.gui.components
 
-data class Color(val paletteIndex: Int)
+import org.isoron.uhabits.gui.*
+
+interface Component {
+    fun draw(canvas: Canvas)
+}

core/src/commonMain/kotlin/org/isoron/uhabits/gui/components/HabitListHeader.kt

@@ -0,0 +1,58 @@
+/*
+ * Copyright (C) 2016-2019 Álinson Santos Xavier <[email protected]>
+ *
+ * This file is part of Loop Habit Tracker.
+ *
+ * Loop Habit Tracker is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by the
+ * Free Software Foundation, either version 3 of the License, or (at your
+ * option) any later version.
+ *
+ * Loop Habit Tracker is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package org.isoron.uhabits.gui.components.HabitList
+
+import org.isoron.uhabits.gui.*
+import org.isoron.uhabits.gui.components.*
+import org.isoron.uhabits.utils.*
+
+class HabitListHeader(private val today: LocalDate,
+                      private val nButtons: Int,
+                      private val theme: Theme,
+                      private val fmt: LocalDateFormatter,
+                      private val calc: LocalDateCalculator) : Component {
+
+    override fun draw(canvas: Canvas) {
+        val width = canvas.getWidth()
+        val height = canvas.getHeight()
+        val buttonSize = theme.checkmarkButtonSize
+        canvas.setColor(theme.headerBackgroundColor)
+        canvas.fillRect(0.0, 0.0, width, height)
+
+        canvas.setColor(theme.headerBorderColor)
+        canvas.setStrokeWidth(0.5)
+        canvas.drawLine(0.0, height - 0.5, width, height - 0.5)
+
+        canvas.setColor(theme.headerTextColor)
+        canvas.setFont(Font.BOLD)
+        canvas.setTextSize(theme.smallTextSize)
+
+        repeat(nButtons) { index ->
+            val date = calc.minusDays(today, nButtons - index - 1)
+            val name = fmt.shortWeekdayName(date).toUpperCase()
+            val number = date.day.toString()
+
+            val x = width - (index + 1) * buttonSize + buttonSize / 2
+            val y = height / 2
+            canvas.drawText(name, x, y - theme.smallTextSize * 0.6)
+            canvas.drawText(number, x, y + theme.smallTextSize * 0.6)
+        }
+    }
+}