add ui.widgets module

Author: chrissimpkins

src/slice/ui/widgets.py

@@ -0,0 +1,49 @@
+# This file is part of Slice.
+#
+#    Slice 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.
+#
+#    Slice 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 Slice.  If not, see <https://www.gnu.org/licenses/>.
+
+from PyQt5.QtWidgets import QLineEdit, QSizePolicy
+
+
+class DragDropLineEdit(QLineEdit):
+    def __init__(self, parent, *args):
+        QLineEdit.__init__(self, *args)
+        # sets widget to accept drag and drop
+        self.parent = parent
+        self.setAcceptDrops(True)
+        self.setClearButtonEnabled(True)
+        self.setTextMargins(5, 5, 5, 5)
+        self.setMinimumWidth(625)
+        self.setMaximumWidth(2500)
+        self.setMinimumHeight(35)
+        self.setSizePolicy(QSizePolicy.MinimumExpanding, QSizePolicy.Minimum)
+        self.setPlaceholderText("Drop a variable font here or click the Open button")
+
+    def dragEnterEvent(self, e):
+        # mime data types are defined in
+        # https://www.tutorialspoint.com/pyqt5/pyqt5_drag_and_drop.htm
+        if e.mimeData().hasText():
+            e.accept()
+        else:
+            e.ignore()
+
+    def dropEvent(self, e):
+        cleaned_text = self.clean_file_path(e.mimeData().text())
+        # set the text entry area
+        self.setText(cleaned_text)
+        # call the parent method to load font on UI
+        self.parent.load_font(cleaned_text)
+
+    def clean_file_path(self, text):
+        return text.replace("file://", "")