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Edit Book: Show the font name in a tooltip when hovering over the font file in the File Browser

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Kovid Goyal 2019-09-17 17:40:25 +05:30
parent 9cc6842006
commit 721c3e3725
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1 changed files with 30 additions and 4 deletions
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34
src/calibre/gui2/tweak_book/file_list.py
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@ -13,9 +13,9 @@ from functools import partial
from PyQt5.Qt import (
QApplication, QCheckBox, QDialog, QDialogButtonBox, QFont, QFormLayout,
QGridLayout, QIcon, QInputDialog, QLabel, QLineEdit, QListWidget,
QListWidgetItem, QMenu, QPainter, QPixmap, QRadioButton, QScrollArea, QSize,
QSpinBox, QStyle, QStyledItemDelegate, Qt, QTimer, QTreeWidget, QTreeWidgetItem,
QVBoxLayout, QWidget, pyqtSignal
QListWidgetItem, QMenu, QPainter, QPixmap, QRadioButton, QRawFont, QScrollArea,
QSize, QSpinBox, QStyle, QStyledItemDelegate, Qt, QTimer, QTreeWidget,
QTreeWidgetItem, QVBoxLayout, QWidget, pyqtSignal
)
from calibre import human_readable, plugins, sanitize_file_name
@ -38,8 +38,8 @@ from calibre.gui2.tweak_book import (
from calibre.gui2.tweak_book.editor import syntax_from_mime
from calibre.gui2.tweak_book.templates import template_for
from calibre.utils.icu import numeric_sort_key
from polyglot.builtins import iteritems, itervalues, unicode_type, range, filter, map
from polyglot.binary import as_hex_unicode
from polyglot.builtins import filter, iteritems, itervalues, map, range, unicode_type
try:
from PyQt5 import sip
@ -233,6 +233,7 @@ class FileList(QTreeWidget):
self.root = self.invisibleRootItem()
self.emblem_cache = {}
self.rendered_emblem_cache = {}
self.font_name_cache = {}
self.top_level_pixmap_cache = {
name : QIcon(I(icon)).pixmap(TOP_ICON_SIZE, TOP_ICON_SIZE)
for name, icon in iteritems({
@ -467,6 +468,13 @@ class FileList(QTreeWidget):
# Duplicate entry in spine
emblems.append('dialog_error.png')
tooltips.append(_('This file occurs more than once in the spine'))
if category == 'fonts':
fname = self.get_font_family_name(name)
if fname:
tooltips.append(fname)
else:
emblems.append('dialog_error.png')
tooltips.append(_('Not a valid font'))
render_emblems(item, emblems)
if tooltips:
@ -494,6 +502,24 @@ class FileList(QTreeWidget):
if item is not None:
self.mark_item_as_current(item)
def get_font_family_name(self, name):
try:
with current_container().open(name) as f:
f.seek(0, os.SEEK_END)
sz = f.tell()
except Exception:
sz = 0
key = name, sz
if key not in self.font_name_cache:
raw = current_container().raw_data(name, decode=False)
f = QRawFont(raw, 12)
if f.isValid():
ans = f.familyName() + ' ' + f.styleName()
else:
ans = None
self.font_name_cache[key] = ans
return self.font_name_cache[key]
def show_context_menu(self, point):
item = self.itemAt(point)
if item is None or item in tuple(itervalues(self.categories)):