Adding upstream version 4:7.4.7.upstream/4%7.4.7upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

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+# Icon Repository for the Applications
+
+All of the icons, separated by themes are included in this
+directory. These icons are built into `.zip` files, and re-ordered `/`
+packed for efficiency reasons based on our UI configuration by the
+`postprocess/CustomTarget_images.mk`.
+
+An icon theme does not need to contain all images, since these can be
+layered one on top of another.
+
+In general the layering is done like this:
+
+    <leaf theme>
+    breeze
+    colibre
+
+## Icon naming convention
+
+sc_* icons are 16x16 px (small)
+lc_* icons are 24x24 px (large)
+There is also an 32px folder at cmd/ with 32 px icons
+
+16x16 px icons are used in the menus
+24x24 px icons are used in toolbars and sidebar
+Notebook bar use 24x24 px icons when there is only one icon, and 16x16 px everywhere else
+
+sc_ and lc_ icon are followed by the .uno:CommandName (see below)
+
+
+## How to Add a New Image Set
+
+- Create a directory for it here (let's call it e.g. `new_set`)
+
+    FIXME: It is important to use an underscore `_` to delimit more words.
+         `scp2` compilation crashes when using a dash `-`.
+         It evidently splits the name into two strings.
+
+    + It's probably not true anymore with filelists.
+    + if this gets changed, `IconThemeSelector::SetPreferredIconTheme` needs to change too
+
+- Add its name (`new_set`) to `WITH_THEMES` variable in `configure.ac`
+
+- The fallback for particular icons is defined be `packimages_CUSTOM_FALLBACK_1`
+  in `packimages/CustomTarget_images.mk`
+
+
+## How to Add a New Icon for a New Command
+
+- Assume you defined a dispatch command in officecfg like the following:
+
+in `officecfg/registry/data/org/openoffice/Office/UI/CalcCommands.xcu`
+
+    <node oor:name=".uno:OpenFromCalc" oor:op="replace">
+        <prop oor:name="Label" oor:type="xs:string">
+            <value xml:lang="en-US">~Open...</value>
+        </prop>
+        <prop oor:name="Properties" oor:type="xs:int">
+            <value>1</value>
+        </prop>
+    </node>
+
+  Here, you need to define a property named "Properties", with its value set
+  to 1 so that the icons show up.
+
+- Now, you need to add 2 new icon images under `icon-themes/colibre/cmd/`, one
+  for the large size and one for the smaller size.  The name of each image
+  must be `lc_<command name>.png` and `sc_<command name>.png`.  Here, the command
+  name is the name given in the above `.xcu` file without the `.uno:` prefix and
+  all its letters lower-cased.  In this example, the file names will be
+  `lc_openfromcalc.png` and `sc_openfromcalc.png`.  Note that you need to add new
+  images to the colibre theme for them to show up in any themes at all.
+
+## How to Call optipng to Optimize Size
+
+8 bit palettes are on the slow path for `quartz/svp/gtk3` so avoid using palettes with...
+
+    $ optipng -nc <file>