From 8ee28d3cef75622e4d698d8e8eb89e22111f888a Mon Sep 17 00:00:00 2001
From: Tom Tromey <tom@tromey.com>
Date: Sun, 3 May 2015 17:54:28 -0600
Subject: [PATCH] add "set gui font"

---
 gui/logwindow.py | 14 ++++++++++++--
 gui/params.py    | 34 ++++++++++++++++++++++++++++++++--
 gui/source.py    |  8 +++++---
 gui/toplevel.py  | 21 ++++++++++++++++++++-
 4 files changed, 69 insertions(+), 8 deletions(-)

diff --git a/gui/logwindow.py b/gui/logwindow.py
index 7ec34db..d540c97 100644
--- a/gui/logwindow.py
+++ b/gui/logwindow.py
@@ -18,9 +18,11 @@
 import gdb
 import gui.toplevel
 import gui.startup
-from gi.repository import Gtk, Pango
 import functools
 
+from gi.repository import Gtk, Pango
+from gui.startup import in_gtk_thread
+
 default_log_window = None
 
 class LogWindow(gui.toplevel.Toplevel):
@@ -36,12 +38,16 @@ class LogWindow(gui.toplevel.Toplevel):
 
         self.window = builder.get_object('logwindow')
         self.view = builder.get_object('textview')
-        self.view.modify_font(Pango.FontDescription('monospace'))
+        self.view.modify_font(gui.params.font_manager.get_font())
         self.buffer = builder.get_object('buffer')
 
         self.window.set_title('GDB Log @%d' % self.number)
         self.window.show()
 
+    @in_gtk_thread
+    def set_font(self, font):
+        self.view.modify_font(Pango.FontDescription(font_name))
+
     def deleted(self, *args):
         if default_log_window == self:
             default_log_window = None
@@ -52,3 +58,7 @@ class LogWindow(gui.toplevel.Toplevel):
 
     def append(self, text):
         gui.startup.send_to_gtk(functools.partial(self._append, text))
+
+    @in_gtk_thread
+    def set_font(self, pango_font):
+        self.view.modify_font(pango_font)
diff --git a/gui/params.py b/gui/params.py
index bdb69f2..9651f2f 100644
--- a/gui/params.py
+++ b/gui/params.py
@@ -16,10 +16,12 @@
 # Parameters
 
 import gdb
-from gi.repository import GtkSource
 import gui.startup
-from gui.startup import in_gdb_thread, in_gtk_thread
 import gui.storage
+import gui.toplevel
+
+from gui.startup import in_gdb_thread, in_gtk_thread
+from gi.repository import GtkSource, Pango
 
 class _SetBase(gdb.Command):
     def __init__(self):
@@ -62,6 +64,34 @@ class _Theme(gdb.Parameter):
         self.buffer_manager.change_theme()
         return ""
 
+class _Font(gdb.Parameter):
+    def __init__(self):
+        self.manager = GtkSource.StyleSchemeManager.get_default()
+        self.storage = gui.storage.storage_manager
+        super(_Font, self).__init__('gui font', gdb.COMMAND_NONE,
+                                    gdb.PARAM_STRING)
+        val = self.storage.get('font')
+        if val is not None:
+            self.value = val
+        else:
+            self.value = 'monospace'
+
+    @in_gtk_thread
+    def get_font(self):
+        # Sorta racy
+        return Pango.FontDescription(self.value)
+
+    @in_gdb_thread
+    def get_show_string(self, pvalue):
+        return "The current font is: " + self.value
+
+    @in_gdb_thread
+    def get_set_string(self):
+        gui.toplevel.state.set_font(self.value)
+        self.storage.set('font', self.value)
+        return ""
+
 _SetBase()
 _ShowBase()
 source_theme = _Theme()
+font_manager = _Font()
diff --git a/gui/source.py b/gui/source.py
index 112c49f..d84285c 100644
--- a/gui/source.py
+++ b/gui/source.py
@@ -220,9 +220,7 @@ class SourceWindow(gui.updatewindow.UpdateWindow):
         for name in BUTTON_NAMES:
             self.buttons[name] = builder.get_object(name)
 
-        font_desc = Pango.FontDescription('monospace')
-        if font_desc:
-            self.view.modify_font(font_desc)
+        self.view.modify_font(gui.params.font_manager.get_font())
 
         attrs = GtkSource.MarkAttributes()
         # FIXME: really we want a little green dot...
@@ -289,3 +287,7 @@ class SourceWindow(gui.updatewindow.UpdateWindow):
             buffer_manager.release_buffer(old_buffer)
             GObject.idle_add(self._do_scroll, buff, srcline - 1)
             # self.view.scroll_to_iter(buff.get_iter_at_line(srcline), 0.0)
+
+    @in_gtk_thread
+    def set_font(self, pango_font):
+        self.view.modify_font(pango_font)
diff --git a/gui/toplevel.py b/gui/toplevel.py
index e7116ab..5881009 100644
--- a/gui/toplevel.py
+++ b/gui/toplevel.py
@@ -1,4 +1,4 @@
-# Copyright (C) 2013 Tom Tromey <tom@tromey.com>
+# Copyright (C) 2013, 2015 Tom Tromey <tom@tromey.com>
 
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
@@ -18,6 +18,8 @@
 import gdb
 import gui.startup
 import threading
+from gi.repository import Pango
+from gui.startup import in_gdb_thread, in_gtk_thread
 
 class _ToplevelState(object):
     def __init__(self):
@@ -57,6 +59,17 @@ class _ToplevelState(object):
                     print ' %3d    %s' % (window.number,
                                           window.window.get_title())
 
+    @in_gtk_thread
+    def _do_set_font(self, font_name):
+        pango_font = Pango.FontDescription(font_name)
+        with self.toplevel_lock:
+            for num in self.toplevels:
+                self.toplevels[num].set_font(pango_font)
+
+    @in_gdb_thread
+    def set_font(self, font_name):
+        gui.startup.send_to_gtk(lambda: self._do_set_font(font_name))
+
 state = _ToplevelState()
 
 class Toplevel(object):
@@ -72,3 +85,9 @@ class Toplevel(object):
 
     def valid(self):
         return self.window is not None
+
+    @in_gtk_thread
+    def set_font(self, pango_font):
+        # Subclasses can override this to be notified when the user
+        # changes the font.
+        pass