manuals: improve the width of diagrams

Better for EPUB output in particular
- Make some diagrams wider when necessary
- Remove ":align: center" when we have ":width: 100%"
- Update the standards.md files to mention this

(From yocto-docs rev: 848ba7bd8984cc3f4bf6b818259865011cde0476)

Signed-off-by: Michael Opdenacker <michael.opdenacker@bootlin.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

3 files changed, 20 insertions, 16 deletions

diff --git a/documentation/overview-manual/concepts.rst b/documentation/overview-manual/concepts.rst
index 6c341976f9..7b056acc87 100644
--- a/documentation/overview-manual/concepts.rst
+++ b/documentation/overview-manual/concepts.rst
@@ -166,7 +166,7 @@ remainder of this section expands on the fundamental input, output,
 process, and metadata logical blocks that make up the workflow.
 
 .. image:: figures/YP-flow-diagram.png
-   :align: center
+   :width: 100%
 
 In general, the build's workflow consists of several functional areas:
 
@@ -209,7 +209,7 @@ Configuration" box of the :ref:`general workflow
 figure <overview-manual/concepts:openembedded build system concepts>`:
 
 .. image:: figures/user-configuration.png
-   :align: center
+   :width: 100%
 
 BitBake needs some basic configuration files in order to complete a
 build. These files are ``*.conf`` files. The minimally necessary ones
@@ -401,6 +401,7 @@ layers from the :ref:`general workflow figure
 
 .. image:: figures/layer-input.png
    :align: center
+   :width: 70%
 
 In general, all layers have a similar structure. They all contain a
 licensing file (e.g. ``COPYING.MIT``) if the layer is to be distributed,
@@ -551,6 +552,7 @@ area of the :ref:`general workflow figure <overview-manual/concepts:openembedded
 
 .. image:: figures/source-input.png
    :align: center
+   :width: 70%
 
 Upstream Project Releases
 ~~~~~~~~~~~~~~~~~~~~~~~~~
@@ -629,7 +631,7 @@ This section looks a little closer into the package feeds area used by
 the build system. Here is a more detailed look at the area:
 
 .. image:: figures/package-feeds.png
-   :align: center
+   :width: 100%
 
 Package feeds are an intermediary step in the build process. The
 OpenEmbedded build system provides classes to generate different package
@@ -702,7 +704,7 @@ The first stages of building a recipe are to fetch and unpack the source
 code:
 
 .. image:: figures/source-fetching.png
-   :align: center
+   :width: 100%
 
 The :ref:`ref-tasks-fetch` and
 :ref:`ref-tasks-unpack` tasks fetch
@@ -790,7 +792,7 @@ Once source code is fetched and unpacked, BitBake locates patch files
 and applies them to the source files:
 
 .. image:: figures/patching.png
-   :align: center
+   :width: 100%
 
 The :ref:`ref-tasks-patch` task uses a
 recipe's :term:`SRC_URI` statements
@@ -831,7 +833,7 @@ compile the source code. Once compilation occurs, the files are copied
 to a holding area (staged) in preparation for packaging:
 
 .. image:: figures/configuration-compile-autoreconf.png
-   :align: center
+   :width: 100%
 
 This step in the build process consists of the following tasks:
 
@@ -889,7 +891,7 @@ After source code is configured, compiled, and staged, the build system
 analyzes the results and splits the output into packages:
 
 .. image:: figures/analysis-for-package-splitting.png
-   :align: center
+   :width: 100%
 
 The :ref:`ref-tasks-package` and
 :ref:`ref-tasks-packagedata`
@@ -968,7 +970,7 @@ Once packages are split and stored in the Package Feeds area, the build
 system uses BitBake to generate the root filesystem image:
 
 .. image:: figures/image-generation.png
-   :align: center
+   :width: 100%
 
 The image generation process consists of several stages and depends on
 several tasks and variables. The
@@ -1086,7 +1088,7 @@ Development Kit (SDK) installer scripts for both the standard SDK and
 the extensible SDK (eSDK):
 
 .. image:: figures/sdk-generation.png
-   :align: center
+   :width: 100%
 
 .. note::
 
@@ -1262,6 +1264,7 @@ this output:
 
 .. image:: figures/images.png
    :align: center
+   :width: 75%
 
 .. note::
 
@@ -1321,7 +1324,7 @@ SDK (e.g. ``bitbake -c populate_sdk_ext`` imagename) or a standard SDK
 closer look at this output:
 
 .. image:: figures/sdk.png
-   :align: center
+   :width: 100%
 
 The specific form of this output is a set of files that includes a
 self-extracting SDK installer (``*.sh``), host and target manifest
@@ -1439,7 +1442,7 @@ The following figure shows a high-level build environment regarding
 toolchain construction and use.
 
 .. image:: figures/cross-development-toolchains.png
-   :align: center
+   :width: 100%
 
 Most of the work occurs on the Build Host. This is the machine used to
 build images and generally work within the the Yocto Project
diff --git a/documentation/overview-manual/development-environment.rst b/documentation/overview-manual/development-environment.rst
index e171d7aaa3..f1001e0bd3 100644
--- a/documentation/overview-manual/development-environment.rst
+++ b/documentation/overview-manual/development-environment.rst
@@ -176,7 +176,7 @@ development:
    repositories for each of these areas.
 
    .. image:: figures/source-repos.png
-      :align: center
+      :width: 100%
 
    For steps on how to view and access these upstream Git repositories,
    see the ":ref:`dev-manual/start:accessing source repositories`"
@@ -191,6 +191,7 @@ development:
 
    .. image:: figures/index-downloads.png
       :align: center
+      :width: 50%
 
    For steps on how to view and access these files, see the
    ":ref:`dev-manual/start:accessing index of releases`"
@@ -205,7 +206,7 @@ development:
    :yocto_dl:`Index of /releases: </releases>` area.
 
    .. image:: figures/yp-download.png
-      :align: center
+      :width: 100%
 
    For steps on how to use the "DOWNLOADS" page, see the
    ":ref:`dev-manual/start:using the downloads page`"
diff --git a/documentation/overview-manual/yp-intro.rst b/documentation/overview-manual/yp-intro.rst
index f240ce0f4b..a2e0862459 100644
--- a/documentation/overview-manual/yp-intro.rst
+++ b/documentation/overview-manual/yp-intro.rst
@@ -24,7 +24,7 @@ software customizations and build interchange for multiple hardware
 platforms as well as software stacks that can be maintained and scaled.
 
 .. image:: figures/key-dev-elements.png
-    :align: center
+    :width: 100%
 
 For further introductory information on the Yocto Project, you might be
 interested in this
@@ -638,7 +638,7 @@ these items that make up the Poky repository in the
 The following figure illustrates what generally comprises Poky:
 
 .. image:: figures/poky-reference-distribution.png
-    :align: center
+    :width: 100%
 
 -  BitBake is a task executor and scheduler that is the heart of the
    OpenEmbedded build system.
@@ -720,7 +720,7 @@ accomplish image and SDK generation. The following figure overviews that
 workflow:
 
 .. image:: figures/YP-flow-diagram.png
-    :align: center
+    :width: 100%
 
 Following is a brief summary of the "workflow":