From 5febee2aa39f7dfdc013283ad5a64d00c38f26fb Mon Sep 17 00:00:00 2001
From: "vn.py" <xiaoyou.chen@foxmail.com>
Date: Thu, 31 Oct 2019 17:13:21 +0800
Subject: [PATCH] [Add] new CodeEditor

---
 vnpy/trader/ui/editor.py | 213 +++++++++++++++++++++++++++++++++++++++
 1 file changed, 213 insertions(+)
 create mode 100644 vnpy/trader/ui/editor.py

diff --git a/vnpy/trader/ui/editor.py b/vnpy/trader/ui/editor.py
new file mode 100644
index 00000000..f2cb1a37
--- /dev/null
+++ b/vnpy/trader/ui/editor.py
@@ -0,0 +1,213 @@
+from typing import Callable, Dict
+from pathlib import Path
+
+from PyQt5 import QtWidgets, Qsci, QtGui
+
+
+class CodeEditor(QtWidgets.QMainWindow):
+    """"""
+
+    def __init__(self):
+        """"""
+        super().__init__()
+
+        self.editors: [str, Qsci.QsciScintilla] = {}
+
+        self.init_ui()
+
+    def init_ui(self):
+        """"""
+        self.setWindowTitle("策略编辑器")
+
+        self.init_menu()
+        self.init_central()
+
+    def init_central(self):
+        """"""
+        self.tab = QtWidgets.QTabWidget()
+        self.path_label = QtWidgets.QLabel()
+
+        vbox = QtWidgets.QVBoxLayout()
+        vbox.addWidget(self.tab)
+        vbox.addWidget(self.path_label)
+
+        widget = QtWidgets.QWidget()
+        widget.setLayout(vbox)
+
+        self.setCentralWidget(widget)
+
+    def init_menu(self):
+        """"""
+        bar = self.menuBar()
+
+        file_bar = bar.addMenu("文件")
+        self.add_menu_action(file_bar, "新建", self.new_file)
+        self.add_menu_action(file_bar, "打开", self.open_file)
+        self.add_menu_action(file_bar, "保存", self.save_file)
+        self.add_menu_action(file_bar, "另存为", self.save_file)
+
+        edit_bar = bar.addMenu("编辑")
+        self.add_menu_action(edit_bar, "复制", self.copy)
+        self.add_menu_action(edit_bar, "粘贴", self.paste)
+        self.add_menu_action(edit_bar, "剪切", self.cut)
+        edit_bar.addSeparator()
+        self.add_menu_action(edit_bar, "查找", self.find)
+        self.add_menu_action(edit_bar, "替换", self.replace)
+
+        help_bar = bar.addMenu("帮助")
+        self.add_menu_action(help_bar, "快捷键", self.show_shortcut)
+
+    def add_menu_action(
+        self,
+        menu: QtWidgets.QMenu,
+        action_name: str,
+        func: Callable,
+    ):
+        """"""
+        action = QtWidgets.QAction(action_name, self)
+        action.triggered.connect(func)
+        menu.addAction(action)
+
+    def new_editor(self):
+        """"""
+        # Create editor object
+        editor = Qsci.QsciScintilla()
+
+        # Set editor font
+        font = QtGui.QFont()
+        font.setFamily('Consolas')
+        font.setFixedPitch(True)
+        font.setPointSize(10)
+
+        editor.setFont(font)
+        editor.setMarginsFont(font)
+
+        # Set margin for line numbers
+        font_metrics = QtGui.QFontMetrics(font)
+        editor.setMarginWidth(0, font_metrics.width("00000") + 6)
+        editor.setMarginLineNumbers(0, True)
+        editor.setMarginsBackgroundColor(QtGui.QColor("#cccccc"))
+
+        # Set brace matching
+        editor.setBraceMatching(Qsci.QsciScintilla.SloppyBraceMatch)
+
+        # Hide horizontal scroll bar
+        editor.SendScintilla(Qsci.QsciScintilla.SCI_SETHSCROLLBAR, 0)
+
+        # Set current line color
+        editor.setCaretLineVisible(True)
+        editor.setCaretLineBackgroundColor(QtGui.QColor("#ffe4e4"))
+
+        # Set Python lexer
+        lexer = Qsci.QsciLexerPython()
+        lexer.setDefaultFont(font)
+        editor.setLexer(lexer)
+
+        # Add minimum editor size
+        editor.setMinimumSize(600, 450)
+
+        # Enable auto complete
+        editor.setAutoCompletionSource(Qsci.QsciScintilla.AcsAll)
+        editor.setAutoCompletionThreshold(2)
+        editor.setAutoCompletionCaseSensitivity(False)
+        editor.setAutoCompletionReplaceWord(False)
+
+        # Use space indentation
+        editor.setIndentationsUseTabs(False)
+        editor.setTabWidth(4)
+        editor.setIndentationGuides(True)
+
+        # Enable folding
+        editor.setFolding(True)
+
+        return editor
+
+    def open_editor(self, file_path: str):
+        """"""
+        if file_path in self.editors:
+            editor = self.editors[file_path]
+            editor.show()
+            return
+
+        editor = self.new_editor()
+        self.editors[file_path] = editor
+
+        buf = open(file_path, encoding="UTF8").read()
+        editor.setText(buf)
+
+        file_name = Path(file_path).name
+        i = self.tab.addTab(editor, file_name)
+        self.tab.setCurrentIndex(i)
+
+        self.path_label.setText(file_path)
+
+    def close_editor(self):
+        """"""
+        pass
+
+    def open_file(self):
+        """"""
+        file_path, _ = QtWidgets.QFileDialog.getOpenFileName(
+            self, "打开", "", "Python(*.py)")
+
+        if file_path:
+            self.open_editor(file_path)
+
+    def new_file(self):
+        """"""
+        file_path, _ = QtWidgets.QFileDialog.getSaveFileName(
+            self, "新建", "", "Python(*.py)")
+
+        if file_path:
+            open(file_path, "a").close()
+            self.open_editor(file_path)
+
+    def save_file(self):
+        """"""
+        pass
+
+    def copy(self):
+        """"""
+        editor = self.get_active_editor()
+        editor.copy()
+
+    def paste(self):
+        """"""
+        editor = self.get_active_editor()
+        editor.paste()
+
+    def cut(self):
+        """"""
+        editor = self.get_active_editor()
+        editor.cut()
+
+    def show_shortcut(self):
+        """"""
+        pass
+
+    def find(self):
+        """"""
+        pass
+
+    def replace(self):
+        """"""
+        pass
+
+    def get_active_editor(self):
+        """"""
+        for editor in self.editors.values():
+            if editor.isVisible():
+                return editor
+
+
+if __name__ == "__main__":
+    import sys
+    from vnpy.trader.ui import create_qapp
+
+    app = create_qapp()
+
+    editor = CodeEditor()
+    editor.showMaximized()
+    editor.open_editor(sys.argv[0])
+
+    app.exec_()