Add search to the font family chooser dialog and get rid of the obsolete fontfamilymodel

src/calibre/gui2/font_family_chooser.py

@@ -13,7 +13,7 @@ from PyQt4.Qt import (QFontInfo, QFontMetrics, Qt, QFont, QFontDatabase, QPen,
         QStyledItemDelegate, QSize, QStyle, QStringListModel, pyqtSignal,
         QDialog, QVBoxLayout, QApplication, QFontComboBox, QPushButton,
         QToolButton, QGridLayout, QListView, QWidget, QDialogButtonBox, QIcon,
-        QHBoxLayout, QLabel, QModelIndex)
+        QHBoxLayout, QLabel, QModelIndex, QLineEdit)
 
 from calibre.constants import config_dir
 from calibre.gui2 import choose_files, error_dialog, info_dialog
@@ -197,15 +197,56 @@ class FontFamilyDialog(QDialog):
         afb.setIcon(QIcon(I('plus.png')))
         afb.clicked.connect(self.add_fonts)
         self.ml = QLabel(_('Choose a font family from the list below:'))
+        self.search = QLineEdit(self)
+        self.search.setPlaceholderText(_('Search'))
+        self.search.returnPressed.connect(self.find)
+        self.nb = QToolButton(self)
+        self.nb.setIcon(QIcon(I('arrow-down.png')))
+        self.nb.setToolTip(_('Find Next'))
+        self.pb = QToolButton(self)
+        self.pb.setIcon(QIcon(I('arrow-up.png')))
+        self.pb.setToolTip(_('Find Previous'))
+        self.nb.clicked.connect(self.find_next)
+        self.pb.clicked.connect(self.find_previous)
 
-        l.addWidget(self.ml, 0, 0, 1, 2)
-        l.addWidget(self.view, 1, 0, 1, 1)
-        l.addWidget(self.faces, 1, 1, 1, 1)
-        l.addWidget(self.bb, 2, 0, 1, 2)
+        l.addWidget(self.ml, 0, 0, 1, 4)
+        l.addWidget(self.search, 1, 0, 1, 1)
+        l.addWidget(self.nb, 1, 1, 1, 1)
+        l.addWidget(self.pb, 1, 2, 1, 1)
+        l.addWidget(self.view, 2, 0, 1, 3)
+        l.addWidget(self.faces, 1, 3, 2, 1)
+        l.addWidget(self.bb, 3, 0, 1, 4)
         l.setAlignment(self.faces, Qt.AlignTop)
 
         self.resize(800, 600)
 
+    def set_current(self, i):
+        self.view.setCurrentIndex(self.m.index(i))
+
+    def keyPressEvent(self, e):
+        if e.key() == Qt.Key_Return:
+            return
+        return QDialog.keyPressEvent(self, e)
+
+    def find(self, backwards=False):
+        i = self.view.currentIndex().row()
+        if i < 0: i = 0
+        q = icu_lower(unicode(self.search.text())).strip()
+        if not q: return
+        r = (xrange(i-1, -1, -1) if backwards else xrange(i+1,
+            len(self.families)))
+        for j in r:
+            f = self.families[j]
+            if q in icu_lower(f):
+                self.set_current(j)
+                return
+
+    def find_next(self):
+        self.find()
+
+    def find_previous(self):
+        self.find(backwards=True)
+
     def build_font_list(self):
         try:
             self.families = list(self.font_scanner.find_font_families())

src/calibre/gui2/widgets.py

@@ -3,18 +3,16 @@ __copyright__ = '2008, Kovid Goyal <kovid at kovidgoyal.net>'
 '''
 Miscellaneous widgets used in the GUI
 '''
-import re, traceback, os
+import re, os
 
 from PyQt4.Qt import (QIcon, QFont, QLabel, QListWidget, QAction,
         QListWidgetItem, QTextCharFormat, QApplication, QSyntaxHighlighter,
         QCursor, QColor, QWidget, QPixmap, QSplitterHandle, QToolButton,
-        QAbstractListModel, QVariant, Qt, SIGNAL, pyqtSignal, QRegExp, QSize,
-        QSplitter, QPainter, QLineEdit, QComboBox, QPen, QGraphicsScene, QMenu,
-        QStringListModel, QCompleter, QStringList, QTimer, QRect,
-        QGraphicsView, QByteArray)
+        QVariant, Qt, SIGNAL, pyqtSignal, QRegExp, QSize, QSplitter, QPainter,
+        QLineEdit, QComboBox, QPen, QGraphicsScene, QMenu, QStringListModel,
+        QCompleter, QStringList, QTimer, QRect, QGraphicsView, QByteArray)
 
-from calibre.constants import iswindows
-from calibre.gui2 import (NONE, error_dialog, pixmap_to_data, gprefs,
+from calibre.gui2 import (error_dialog, pixmap_to_data, gprefs,
         warning_dialog)
 from calibre.gui2.filename_pattern_ui import Ui_Form
 from calibre import fit_image
@@ -348,43 +346,6 @@ class CoverView(QGraphicsView, ImageDropMixin): # {{{
 
 # }}}
 
-class FontFamilyModel(QAbstractListModel): # {{{
-
-    def __init__(self, *args):
-        QAbstractListModel.__init__(self, *args)
-        from calibre.utils.fonts.scanner import font_scanner
-        try:
-            self.families = font_scanner.find_font_families()
-        except:
-            self.families = []
-            print 'WARNING: Could not load fonts'
-            traceback.print_exc()
-        # Restrict to Qt families as Qt tends to crash
-        self.families[:0] = [_('None')]
-        self.font = QFont('Arial' if iswindows else 'sansserif')
-
-    def rowCount(self, *args):
-        return len(self.families)
-
-    def data(self, index, role):
-        try:
-            family = self.families[index.row()]
-        except:
-            traceback.print_exc()
-            return NONE
-        if role == Qt.DisplayRole:
-            return QVariant(family)
-        if role == Qt.FontRole:
-            # If a user chooses some non standard font as the interface font,
-            # rendering some font names causes Qt to crash, so return what is
-            # hopefully a "safe" font
-            return QVariant(self.font)
-        return NONE
-
-    def index_of(self, family):
-        return self.families.index(family.strip())
-# }}}
-
 # BasicList {{{
 class BasicListItem(QListWidgetItem):