Add support for Traditional Chinese handwriting (T9 Write CJK)

This change adds handwriting support for Traditional Chinese.

Change-Id: Ic358bf81795a3c88234b5e9c85635223ebf1c0d7
Reviewed-by: Mitch Curtis <mitch.curtis@qt.io>

4 files changed, 126 insertions, 0 deletions

diff --git a/src/virtualkeyboard/content/layouts/zh_TW/handwriting.qml b/src/virtualkeyboard/content/layouts/zh_TW/handwriting.qml
new file mode 100644
index 00000000..598980d1
--- /dev/null
+++ b/src/virtualkeyboard/content/layouts/zh_TW/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.ChineseHandwriting
+    }
+
+    KeyboardRow {
+        Layout.preferredHeight: 3
+        KeyboardColumn {
+            Layout.preferredWidth: bottomRow.width - hideKeyboardKey.width
+            KeyboardRow {
+                TraceInputKey {
+                    objectName: "hwrInputArea"
+                    patternRecognitionMode: InputEngine.HandwritingRecoginition
+                    horizontalRulers:
+                        InputContext.inputEngine.inputMode !== InputEngine.ChineseHandwriting ? [] :
+                            [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/zh_TW/main.qml b/src/virtualkeyboard/content/layouts/zh_TW/main.qml
index 25108389..2aa36ed2 100644
--- a/src/virtualkeyboard/content/layouts/zh_TW/main.qml
+++ b/src/virtualkeyboard/content/layouts/zh_TW/main.qml
@@ -197,6 +197,9 @@ KeyboardLayoutLoader {
                 ChangeLanguageKey {
                     weight: 154
                 }
+                HandwritingModeKey {
+                    weight: 154
+                }
                 InputModeKey {
                     visible: InputContext.inputEngine.inputModes.indexOf(InputEngine.Zhuyin) !== -1
                 }
@@ -420,6 +423,9 @@ KeyboardLayoutLoader {
                 ChangeLanguageKey {
                     weight: 154
                 }
+                HandwritingModeKey {
+                    weight: 154
+                }
                 InputModeKey {
                     visible: InputContext.inputEngine.inputModes.indexOf(InputEngine.Cangjie) !== -1
                 }
diff --git a/src/virtualkeyboard/t9writeinputmethod.cpp b/src/virtualkeyboard/t9writeinputmethod.cpp
index 3028d7d0..ee69d49d 100644
--- a/src/virtualkeyboard/t9writeinputmethod.cpp
+++ b/src/virtualkeyboard/t9writeinputmethod.cpp
@@ -616,6 +616,8 @@ public:
         if (language == DECUMA_LANG_PRC) {
             if (inputMode != InputEngine::ChineseHandwriting)
                 language = DECUMA_LANG_EN;
+            else if (locale.script() == QLocale::TraditionalChineseScript)
+                language = (locale.country() == QLocale::HongKong) ? DECUMA_LANG_HK : DECUMA_LANG_TW;
         }
 
         return language;
diff --git a/src/virtualkeyboard/virtualkeyboard.pro b/src/virtualkeyboard/virtualkeyboard.pro
index e16eaba9..cfbd55c7 100644
--- a/src/virtualkeyboard/virtualkeyboard.pro
+++ b/src/virtualkeyboard/virtualkeyboard.pro
@@ -202,6 +202,8 @@ contains(CONFIG, lang-zh(_TW)?) {
     LAYOUT_FILES += \
         content/layouts/zh_TW/main.qml \
         content/layouts/zh_TW/symbols.qml
+t9write-cjk: LAYOUT_FILES += \
+        content/layouts/zh_TW/handwriting.qml
 }
 
 retro-style {