docs: 4kify images.

These commits were squashed to avoid repo size exploding.

[cherrypick from master]

docs/_static/style.css

@@ -10,3 +10,43 @@ div.figure {
 div.body li {
     margin-bottom: 0.5em;
 }
+
+
+
+/*
+ * Setting :width; on an image causes Sphinx to turn the image into a link, so
+ * set :Class: instead.
+ */
+.mitogen-full-width {
+    width: 100%;
+}
+
+.mitogen-right-150 {
+    float: right;
+    padding-left: 8px;
+    width: 150px;
+}
+
+.mitogen-right-225 {
+    float: right;
+    padding-left: 8px;
+    width: 225px;
+}
+
+.mitogen-right-275 {
+    float: right;
+    padding-left: 8px;
+    width: 275px;
+}
+
+.mitogen-right-300 {
+    float: right;
+    padding-left: 8px;
+    width: 300px;
+}
+
+.mitogen-right-350 {
+    float: right;
+    padding-left: 8px;
+    width: 350px;
+}

docs/ansible.rst

@@ -1,6 +1,7 @@
 
-.. image:: images/ansible/cell_division.png
+.. image:: images/ansible/ansible_mitogen.svg
-    :align: right
+    :class: mitogen-right-225
+
 
 Mitogen for Ansible
 ===================
@@ -211,8 +212,8 @@ New Features & Notes
 Connection Delegation
 ~~~~~~~~~~~~~~~~~~~~~
 
-.. image:: images/jumpbox.png
+.. image:: images/jumpbox.svg
-    :align: right
+    :class: mitogen-right-275
 
 Included is a preview of **Connection Delegation**, a Mitogen-specific
 implementation of `stackable connection plug-ins`_. This enables connections
@@ -957,12 +958,12 @@ Sample Profiles
 Local VM connection
 ~~~~~~~~~~~~~~~~~~~
 
-This demonstrates Mitogen vs. connection pipelining to a local VM, executing
+This demonstrates Mitogen vs. connection pipelining to a local VM executing
-the 100 simple repeated steps of ``run_hostname_100_times.yml`` from the
+``bench/loop-100-items.yml``, which simply executes ``hostname`` 100 times.
-examples directory. Mitogen requires **43x less bandwidth and 4.25x less
+Mitogen requires **43x less bandwidth and 6.5x less time**.
-time**.
 
-.. image:: images/ansible/run_hostname_100_times.png
+.. image:: images/ansible/run_hostname_100_times_mito.svg
+.. image:: images/ansible/run_hostname_100_times_plain.svg
 
 
 Kathmandu to Paris

docs/api.rst

@@ -71,8 +71,8 @@ mitogen.parent
 mitogen.fakessh
 ---------------
 
-.. image:: images/fakessh.png
+.. image:: images/fakessh.svg
-    :align: right
+    :class: mitogen-right-300
 
 .. automodule:: mitogen.fakessh
 .. currentmodule:: mitogen.fakessh

docs/getting_started.rst

@@ -13,8 +13,8 @@ Liability Waiver
 Before proceeding, it is critical you understand what you're involving yourself
 and possibly your team and its successors with:
 
-.. image:: images/pandora.jpg
+.. image:: images/pandora.svg
-    :align: right
+    :class: mitogen-right-350
 
 * Constructing the most fundamental class, :py:class:`Broker
   <mitogen.master.Broker>`, causes a new thread to be spawned, exposing a huge
@@ -78,7 +78,9 @@ operate across machines and privilege domains:
 Broker And Router
 -----------------
 
-.. image:: images/layout.png
+.. image:: images/layout.svg
+    :class: mitogen-full-width
+
 .. currentmodule:: mitogen.core
 
 Execution starts when your program constructs a :py:class:`Broker` and

docs/howitworks.rst

@@ -554,7 +554,8 @@ associated with that stream if the stream is disconnected for any reason.
 Example
 #######
 
-.. image:: images/context-tree.png
+.. image:: images/context-tree.svg
+    :class: mitogen-full-width
 
 In the diagram, when ``node12b`` is creating the ``sudo:node12b:webapp``
 context, it must send ``ADD_ROUTE`` messages to ``rack12``, which will
@@ -572,7 +573,8 @@ When ``sudo:node22a:webapp`` wants to send a message to
 
 ``sudo:node22a:webapp -> node22a -> rack22 -> dc2 -> bastion -> dc1 -> rack12 -> node12b -> sudo:node12b:webapp``
 
-.. image:: images/route.png
+.. image:: images/route.svg
+    :class: mitogen-full-width
 
 
 .. _source-verification:

docs/index.rst

@@ -12,8 +12,8 @@ Mitogen is a Python library for writing distributed self-replicating programs.
         }
     </style>
 
-.. image:: images/cell_division.png
+.. image:: images/mitogen.svg
-    :align: right
+    :class: mitogen-right-225
 
 There is no requirement for installing packages, copying files around, writing
 shell snippets, upfront configuration, or providing any secondary link to a
@@ -76,8 +76,8 @@ program's domain of control outward to other machines, enabling your program to
 **manipulate machines behind a firewall**, or enable its **data plane to cohere
 to your network topology**.
 
-.. image:: images/billing.png
+.. image:: images/billing.svg
-    :align: right
+    :class: mitogen-right-150
 
 .. code::
 
@@ -158,8 +158,8 @@ Common sources of import latency and bandwidth consumption are mitigated:
 SSH Client Emulation
 ####################
 
-.. image:: images/fakessh.png
+.. image:: images/fakessh.svg
-    :align: right
+    :class: mitogen-right-300
 
 Support is included for starting subprocesses with a modified environment, that
 cause their attempt to use SSH to be redirected back into the host program. In
@@ -192,7 +192,8 @@ for example enforce an interactive TTY and account password.
 Message Routing
 ###############
 
-.. image:: images/route.png
+.. image:: images/route.svg
+    :class: mitogen-full-width
 
 Slaves may communicate autonomously without direct interaction with the master,
 allowing a wide variety of complex data and control flows to be expressed using
@@ -230,7 +231,8 @@ uptime')** without further need to capture or manage output.
 Detached Subtrees
 #################
 
-.. image:: images/detached-subtree.png
+.. image:: images/detached-subtree.svg
+    :class: mitogen-full-width
 
 Contexts may detach from and outlive the running program, while maintaining
 communication with descendents in their subtree. This enables persistent

docs/svg-boxify.py

@@ -0,0 +1,13 @@
+
+# Add viewBox attr to SVGs lacking it, so IE scales properly.
+
+import lxml.etree
+import glob
+
+
+for name in glob.glob('images/*.svg') + glob.glob('images/ansible/*.svg'):
+    doc = lxml.etree.parse(open(name))
+    svg = doc.getroot()
+    if 'viewBox' not in svg.attrib:
+        svg.attrib['viewBox'] = '0 0 %(width)s %(height)s' % svg.attrib
+        open(name, 'w').write(lxml.etree.tostring(svg, xml_declaration=True, encoding='UTF-8'))