Add support for Japanese handwriting (T9 Write CJK)

This change adds handwriting support for Japanese.

Change-Id: Ifc8f0e32c8b3211c13aee8be5cb2e05fae09d3b7
Reviewed-by: Mitch Curtis <mitch.curtis@qt.io>

5 files changed, 127 insertions, 4 deletions

diff --git a/src/virtualkeyboard/content/components/InputModeKey.qml b/src/virtualkeyboard/content/components/InputModeKey.qml
index 141413e8..dc4c8266 100644
--- a/src/virtualkeyboard/content/components/InputModeKey.qml
+++ b/src/virtualkeyboard/content/components/InputModeKey.qml
@@ -69,6 +69,7 @@ Key {
         "カ",    // InputEngine.Katakana
         "全角",  // InputEngine.FullwidthLatin
         "中文",  // InputEngine.ChineseHandwriting
+        "日本語", // InputEngine.JapaneseHandwriting
         "한국어", // InputEngine.KoreanHandwriting
     ]
 
diff --git a/src/virtualkeyboard/content/layouts/ja_JP/handwriting.qml b/src/virtualkeyboard/content/layouts/ja_JP/handwriting.qml
new file mode 100644
index 00000000..0820cbbc
--- /dev/null
+++ b/src/virtualkeyboard/content/layouts/ja_JP/handwriting.qml
@@ -0,0 +1,116 @@
+/****************************************************************************
+**
+** Copyright (C) 2017 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the Qt Virtual Keyboard module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:GPL$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3 or (at your option) any later version
+** approved by the KDE Free Qt Foundation. The licenses are as published by
+** the Free Software Foundation and appearing in the file LICENSE.GPL3
+** included in the packaging of this file. Please review the following
+** information to ensure the GNU General Public License requirements will
+** be met: https://www.gnu.org/licenses/gpl-3.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+import QtQuick 2.0
+import QtQuick.Layouts 1.0
+import QtQuick.VirtualKeyboard 2.3
+
+KeyboardLayout {
+    function createInputMethod() {
+        return Qt.createQmlObject('import QtQuick 2.0; import QtQuick.VirtualKeyboard 2.3; HandwritingInputMethod {}', parent)
+    }
+    sharedLayouts: ['symbols']
+    inputMode: preferredInputMode()
+
+    Connections {
+        target: InputContext
+        onInputMethodHintsChanged: {
+            var newInputMode = preferredInputMode()
+            if (InputContext.inputEngine.inputModes.indexOf(newInputMode) !== -1)
+                InputContext.inputEngine.inputMode = newInputMode
+        }
+    }
+
+    function preferredInputMode() {
+        return InputContext.inputMethodHints &
+                (Qt.ImhPreferLatin | Qt.ImhEmailCharactersOnly | Qt.ImhUrlCharactersOnly |
+                 Qt.ImhLatinOnly) ? InputEngine.Latin : InputEngine.JapaneseHandwriting
+    }
+
+    KeyboardRow {
+        Layout.preferredHeight: 3
+        KeyboardColumn {
+            Layout.preferredWidth: bottomRow.width - hideKeyboardKey.width
+            KeyboardRow {
+                TraceInputKey {
+                    objectName: "hwrInputArea"
+                    patternRecognitionMode: InputEngine.HandwritingRecoginition
+                    horizontalRulers:
+                        InputContext.inputEngine.inputMode !== InputEngine.JapaneseHandwriting ? [] :
+                            [Math.round(boundingBox.height / 4), Math.round(boundingBox.height / 4) * 2, Math.round(boundingBox.height / 4) * 3]
+
+                }
+            }
+        }
+        KeyboardColumn {
+            Layout.preferredWidth: hideKeyboardKey.width
+            KeyboardRow {
+                BackspaceKey {}
+            }
+            KeyboardRow {
+                EnterKey {}
+            }
+            KeyboardRow {
+                ShiftKey { }
+            }
+        }
+    }
+    KeyboardRow {
+        id: bottomRow
+        Layout.preferredHeight: 1
+        keyWeight: 154
+        InputModeKey {
+            weight: 217
+        }
+        ChangeLanguageKey {
+            weight: 154
+            customLayoutsOnly: true
+        }
+        HandwritingModeKey {
+            weight: 154
+        }
+        SpaceKey {
+            weight: 864
+        }
+        Key {
+            key: Qt.Key_Apostrophe
+            text: "‘"
+            alternativeKeys: "《》〈〉•…々〆‘’“”「」¥"
+        }
+        Key {
+            key: Qt.Key_Period
+            text: "．"
+            alternativeKeys: "：；，．、。？！"
+        }
+        HideKeyboardKey {
+            id: hideKeyboardKey
+            weight: 204
+        }
+    }
+}
diff --git a/src/virtualkeyboard/content/layouts/ja_JP/main.qml b/src/virtualkeyboard/content/layouts/ja_JP/main.qml
index 772702af..06d8fd0b 100644
--- a/src/virtualkeyboard/content/layouts/ja_JP/main.qml
+++ b/src/virtualkeyboard/content/layouts/ja_JP/main.qml
@@ -189,10 +189,11 @@ KeyboardLayoutLoader {
             KeyboardRow {
                 keyWeight: 154
                 SymbolModeKey {
-                    weight: 217
+                    weight: 194
                 }
                 ChangeLanguageKey {
-                    weight: 174
+                }
+                HandwritingModeKey {
                 }
                 Key {
                     key: Qt.Key_Left
@@ -378,10 +379,11 @@ KeyboardLayoutLoader {
             KeyboardRow {
                 keyWeight: 154
                 SymbolModeKey {
-                    weight: 217
+                    weight: 194
                 }
                 ChangeLanguageKey {
-                    weight: 174
+                }
+                HandwritingModeKey {
                 }
                 Key {
                     key: Qt.Key_Left
diff --git a/src/virtualkeyboard/content/styles/default/style.qml b/src/virtualkeyboard/content/styles/default/style.qml
index e759616e..b4848f68 100644
--- a/src/virtualkeyboard/content/styles/default/style.qml
+++ b/src/virtualkeyboard/content/styles/default/style.qml
@@ -764,6 +764,8 @@ KeyboardStyle {
                         return "123"
                     case InputEngine.ChineseHandwriting:
                         return "中文"
+                    case InputEngine.JapaneseHandwriting:
+                        return "日本語"
                     case InputEngine.KoreanHandwriting:
                         return "한국어"
                     default:
diff --git a/src/virtualkeyboard/content/styles/retro/style.qml b/src/virtualkeyboard/content/styles/retro/style.qml
index 68905852..26def327 100644
--- a/src/virtualkeyboard/content/styles/retro/style.qml
+++ b/src/virtualkeyboard/content/styles/retro/style.qml
@@ -878,6 +878,8 @@ KeyboardStyle {
                     return "123"
                 case InputEngine.ChineseHandwriting:
                     return "中文"
+                case InputEngine.JapaneseHandwriting:
+                    return "日本語"
                 case InputEngine.KoreanHandwriting:
                     return "한국어"
                 default: