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# Copyright (C) 2022 The Qt Company Ltd.
# SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
from PySide6.QtCore import Qt, QSignalBlocker, Slot
from PySide6.QtGui import QGuiApplication, QClipboard, QFont, QFontDatabase
from PySide6.QtWidgets import (QCheckBox, QComboBox, QFontComboBox,
QHBoxLayout, QLabel, QLineEdit, QMainWindow,
QPushButton, QScrollArea,
QVBoxLayout, QWidget)
from characterwidget import CharacterWidget
from fontinfodialog import FontInfoDialog
class MainWindow(QMainWindow):
def __init__(self, parent=None):
super().__init__(parent)
self._character_widget = CharacterWidget()
self._filter_combo = QComboBox()
self._style_combo = QComboBox()
self._size_combo = QComboBox()
self._font_combo = QFontComboBox()
self._line_edit = QLineEdit()
self._scroll_area = QScrollArea()
self._font_merging = QCheckBox()
file_menu = self.menuBar().addMenu("File")
file_menu.addAction("Quit", self.close)
help_menu = self.menuBar().addMenu("Help")
help_menu.addAction("Show Font Info", self.show_info)
help_menu.addAction("About &Qt", qApp.aboutQt)
central_widget = QWidget()
self._filter_label = QLabel("Filter:")
self._filter_combo = QComboBox()
self._filter_combo.addItem("All", int(QFontComboBox.AllFonts.value))
self._filter_combo.addItem("Scalable", int(QFontComboBox.ScalableFonts.value))
self._filter_combo.addItem("Monospaced", int(QFontComboBox.MonospacedFonts.value))
self._filter_combo.addItem("Proportional", int(QFontComboBox.ProportionalFonts.value))
self._filter_combo.setCurrentIndex(0)
self._filter_combo.currentIndexChanged.connect(self.filter_changed)
self._font_label = QLabel("Font:")
self._font_combo = QFontComboBox()
self._size_label = QLabel("Size:")
self._size_combo = QComboBox()
self._style_label = QLabel("Style:")
self._style_combo = QComboBox()
self._font_merging_label = QLabel("Automatic Font Merging:")
self._font_merging = QCheckBox()
self._font_merging.setChecked(True)
self._scroll_area = QScrollArea()
self._character_widget = CharacterWidget()
self._scroll_area.setWidget(self._character_widget)
self.find_styles(self._font_combo.currentFont())
self.find_sizes(self._font_combo.currentFont())
self._line_edit = QLineEdit()
self._line_edit.setClearButtonEnabled(True)
self._clipboard_button = QPushButton("To clipboard")
self._font_combo.currentFontChanged.connect(self.find_styles)
self._font_combo.currentFontChanged.connect(self.find_sizes)
self._font_combo.currentFontChanged.connect(self._character_widget.update_font)
self._size_combo.currentTextChanged.connect(self._character_widget.update_size)
self._style_combo.currentTextChanged.connect(self._character_widget.update_style)
self._character_widget.character_selected.connect(self.insert_character)
self._clipboard_button.clicked.connect(self.update_clipboard)
self._font_merging.toggled.connect(self._character_widget.update_font_merging)
controls_layout = QHBoxLayout()
controls_layout.addWidget(self._filter_label)
controls_layout.addWidget(self._filter_combo, 1)
controls_layout.addWidget(self._font_label)
controls_layout.addWidget(self._font_combo, 1)
controls_layout.addWidget(self._size_label)
controls_layout.addWidget(self._size_combo, 1)
controls_layout.addWidget(self._style_label)
controls_layout.addWidget(self._style_combo, 1)
controls_layout.addWidget(self._font_merging_label)
controls_layout.addWidget(self._font_merging, 1)
controls_layout.addStretch(1)
line_layout = QHBoxLayout()
line_layout.addWidget(self._line_edit, 1)
line_layout.addSpacing(12)
line_layout.addWidget(self._clipboard_button)
central_layout = QVBoxLayout(central_widget)
central_layout.addLayout(controls_layout)
central_layout.addWidget(self._scroll_area, 1)
central_layout.addSpacing(4)
central_layout.addLayout(line_layout)
self.setCentralWidget(central_widget)
self.setWindowTitle("Character Map")
@Slot(QFont)
def find_styles(self, font):
current_item = self._style_combo.currentText()
self._style_combo.clear()
styles = QFontDatabase.styles(font.family())
for style in styles:
self._style_combo.addItem(style)
style_index = self._style_combo.findText(current_item)
if style_index == -1:
self._style_combo.setCurrentIndex(0)
else:
self._style_combo.setCurrentIndex(style_index)
@Slot(int)
def filter_changed(self, f):
filter = QFontComboBox.FontFilter(self._filter_combo.itemData(f))
self._font_combo.setFontFilters(filter)
count = self._font_combo.count()
self.statusBar().showMessage(f"{count} font(s) found")
@Slot(QFont)
def find_sizes(self, font):
current_size = self._size_combo.currentText()
with QSignalBlocker(self._size_combo):
# sizeCombo signals are now blocked until end of scope
self._size_combo.clear()
style = QFontDatabase.styleString(font)
if QFontDatabase.isSmoothlyScalable(font.family(), style):
sizes = QFontDatabase.standardSizes()
for size in sizes:
self._size_combo.addItem(f"{size}")
self._size_combo.setEditable(True)
else:
sizes = QFontDatabase.smoothSizes(font.family(), style)
for size in sizes:
self._size_combo.addItem(f"{size}")
self._size_combo.setEditable(False)
size_index = self._size_combo.findText(current_size)
if size_index == -1:
self._size_combo.setCurrentIndex(max(0, self._size_combo.count() / 3))
else:
self._size_combo.setCurrentIndex(size_index)
@Slot(str)
def insert_character(self, character):
self._line_edit.insert(character)
@Slot()
def update_clipboard(self):
clipboard = QGuiApplication.clipboard()
clipboard.setText(self._line_edit.text(), QClipboard.Clipboard)
clipboard.setText(self._line_edit.text(), QClipboard.Selection)
@Slot()
def show_info(self):
screen_geometry = self.screen().geometry()
dialog = FontInfoDialog(self)
dialog.setWindowTitle("Fonts")
dialog.setAttribute(Qt.WA_DeleteOnClose)
dialog.resize(screen_geometry.width() / 4, screen_geometry.height() / 4)
dialog.show()
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