| # Copyright 2013 Google, Inc. All Rights Reserved. |
| # |
| # Google Author(s): Behdad Esfahbod |
| |
| """GUI font inspector. |
| """ |
| |
| from __future__ import print_function, division, absolute_import |
| from fontTools.misc.py23 import * |
| from fontTools import misc, ttLib, cffLib |
| try: |
| from gi import pygtkcompat |
| except ImportError: |
| pygtkcompat = None |
| |
| if pygtkcompat is not None: |
| pygtkcompat.enable() |
| pygtkcompat.enable_gtk(version='3.0') |
| import gtk |
| import sys |
| |
| |
| class Row(object): |
| def __init__(self, parent, index, key, value, font): |
| self._parent = parent |
| self._index = index |
| self._key = key |
| self._value = value |
| self._font = font |
| |
| if isinstance(value, ttLib.TTFont): |
| self._add_font(value) |
| return |
| |
| if not isinstance(value, basestring): |
| # Try sequences |
| is_sequence = True |
| try: |
| len(value) |
| iter(value) |
| # It's hard to differentiate list-type sequences |
| # from dict-type ones. Try fetching item 0. |
| value[0] |
| except (TypeError, AttributeError, KeyError, IndexError): |
| is_sequence = False |
| if is_sequence: |
| self._add_list(key, value) |
| return |
| if hasattr(value, '__dict__'): |
| self._add_object(key, value) |
| return |
| if hasattr(value, 'items'): |
| self._add_dict(key, value) |
| return |
| |
| if isinstance(value, basestring): |
| self._value_str = '"'+value+'"' |
| self._children = [] |
| return |
| |
| # Everything else |
| self._children = [] |
| |
| def _filter_items(self): |
| items = [] |
| for k,v in self._items: |
| if isinstance(v, ttLib.TTFont): |
| continue |
| if k in ['reader', 'file', 'tableTag', 'compileStatus', 'recurse']: |
| continue |
| if isinstance(k, basestring) and k[0] == '_': |
| continue |
| items.append((k,v)) |
| self._items = items |
| |
| def _add_font(self, font): |
| self._items = [(tag,font[tag]) for tag in font.keys()] |
| |
| def _add_object(self, key, value): |
| # Make sure item is decompiled |
| try: |
| value.asdf # Any better way?! |
| except (AttributeError, KeyError, TypeError, ttLib.TTLibError): |
| pass |
| if isinstance(value, ttLib.getTableModule('glyf').Glyph): |
| # Glyph type needs explicit expanding to be useful |
| value.expand(self._font['glyf']) |
| if isinstance(value, misc.psCharStrings.T2CharString): |
| try: |
| value.decompile() |
| except TypeError: # Subroutines can't be decompiled |
| pass |
| if isinstance(value, cffLib.BaseDict): |
| for k in value.rawDict.keys(): |
| getattr(value, k) |
| if isinstance(value, cffLib.Index): |
| # Load all items |
| for i in range(len(value)): |
| value[i] |
| # Discard offsets as should not be needed anymore |
| if hasattr(value, 'offsets'): |
| del value.offsets |
| |
| self._value_str = value.__class__.__name__ |
| if isinstance(value, ttLib.tables.DefaultTable.DefaultTable): |
| self._value_str += ' (%d Bytes)' % self._font.reader.tables[key].length |
| self._items = sorted(value.__dict__.items()) |
| self._filter_items() |
| |
| def _add_dict(self, key, value): |
| self._value_str = '%s of %d items' % (value.__class__.__name__, len(value)) |
| self._items = sorted(value.items()) |
| |
| def _add_list(self, key, value): |
| if len(value) and len(value) <= 32: |
| self._value_str = str(value) |
| else: |
| self._value_str = '%s of %d items' % (value.__class__.__name__, len(value)) |
| self._items = list(enumerate(value)) |
| |
| def __len__(self): |
| if hasattr(self, '_children'): |
| return len(self._children) |
| if hasattr(self, '_items'): |
| return len(self._items) |
| assert False |
| |
| def _ensure_children(self): |
| if hasattr(self, '_children'): |
| return |
| children = [] |
| for i,(k,v) in enumerate(self._items): |
| children.append(Row(self, i, k, v, self._font)) |
| self._children = children |
| del self._items |
| |
| def __getitem__(self, n): |
| if n >= len(self): |
| return None |
| if not hasattr(self, '_children'): |
| self._children = [None] * len(self) |
| c = self._children[n] |
| if c is None: |
| k,v = self._items[n] |
| c = self._children[n] = Row(self, n, k, v, self._font) |
| self._items[n] = None |
| return c |
| |
| def get_parent(self): |
| return self._parent |
| |
| def get_index(self): |
| return self._index |
| |
| def get_key(self): |
| return self._key |
| |
| def get_value(self): |
| return self._value |
| |
| def get_value_str(self): |
| if hasattr(self,'_value_str'): |
| return self._value_str |
| return str(self._value) |
| |
| class FontTreeModel(gtk.GenericTreeModel): |
| |
| __gtype_name__ = 'FontTreeModel' |
| |
| def __init__(self, font): |
| super(FontTreeModel, self).__init__() |
| self._columns = (str, str) |
| self.font = font |
| self._root = Row(None, 0, "font", font, font) |
| |
| def on_get_flags(self): |
| return 0 |
| |
| def on_get_n_columns(self): |
| return len(self._columns) |
| |
| def on_get_column_type(self, index): |
| return self._columns[index] |
| |
| def on_get_iter(self, path): |
| rowref = self._root |
| while path: |
| rowref = rowref[path[0]] |
| path = path[1:] |
| return rowref |
| |
| def on_get_path(self, rowref): |
| path = [] |
| while rowref != self._root: |
| path.append(rowref.get_index()) |
| rowref = rowref.get_parent() |
| path.reverse() |
| return tuple(path) |
| |
| def on_get_value(self, rowref, column): |
| if column == 0: |
| return rowref.get_key() |
| else: |
| return rowref.get_value_str() |
| |
| def on_iter_next(self, rowref): |
| return rowref.get_parent()[rowref.get_index() + 1] |
| |
| def on_iter_children(self, rowref): |
| return rowref[0] |
| |
| def on_iter_has_child(self, rowref): |
| return bool(len(rowref)) |
| |
| def on_iter_n_children(self, rowref): |
| return len(rowref) |
| |
| def on_iter_nth_child(self, rowref, n): |
| if not rowref: rowref = self._root |
| return rowref[n] |
| |
| def on_iter_parent(self, rowref): |
| return rowref.get_parent() |
| |
| class Inspect(object): |
| |
| def _delete_event(self, widget, event, data=None): |
| gtk.main_quit() |
| return False |
| |
| def __init__(self, fontfile): |
| |
| self.window = gtk.Window(gtk.WINDOW_TOPLEVEL) |
| self.window.set_title("%s - pyftinspect" % fontfile) |
| self.window.connect("delete_event", self._delete_event) |
| self.window.set_size_request(400, 600) |
| |
| self.scrolled_window = gtk.ScrolledWindow() |
| self.window.add(self.scrolled_window) |
| |
| self.font = ttLib.TTFont(fontfile, lazy=True) |
| self.treemodel = FontTreeModel(self.font) |
| self.treeview = gtk.TreeView(self.treemodel) |
| #self.treeview.set_reorderable(True) |
| |
| for i in range(2): |
| col_name = ('Key', 'Value')[i] |
| col = gtk.TreeViewColumn(col_name) |
| col.set_sort_column_id(-1) |
| self.treeview.append_column(col) |
| |
| cell = gtk.CellRendererText() |
| col.pack_start(cell, True) |
| col.add_attribute(cell, 'text', i) |
| |
| self.treeview.set_search_column(1) |
| self.scrolled_window.add(self.treeview) |
| self.window.show_all() |
| |
| def main(args=None): |
| if args is None: |
| args = sys.argv[1:] |
| if len(args) < 1: |
| print("usage: pyftinspect font...", file=sys.stderr) |
| return 1 |
| for arg in args: |
| Inspect(arg) |
| gtk.main() |
| |
| if __name__ == "__main__": |
| sys.exit(main()) |
