A textline is a line of text which can be edited by the user. It has a
maximum length (in chracters) but otherwise there are no restrictions.
Signed-off-by: Simon Glass <sjg@chromium.org>
Add the CLI state, a buffer to hold the old value of the text being
edited and a place to save vidconsole entry context. These will be use
by the textline object.
Set an upper limit on the maximum number of characters in a textline
object supported by expo, at least for now.
Signed-off-by: Simon Glass <sjg@chromium.org>
So far only menus can be highlighted. With the coming addition of
text lines we need to be able to highlight other objects. Add a function
to determine whether an object can be highlighted.
Signed-off-by: Simon Glass <sjg@chromium.org>
Add a command to write cedit settings to CMOS RAM so that it can be
preserved across a reboot. This uses a simple bit-encoding, where each
field has a 'bit position' and a 'bit length' in the schema.
Signed-off-by: Simon Glass <sjg@chromium.org>
Before adding more functions to this interface, create a new header for
the configuration editor.
Fix up the expo header guard while we are here.
Signed-off-by: Simon Glass <sjg@chromium.org>
Add a new 'cedit' command which allows editing configuration using an
expo. The configuration items appear as menus on the display.
This is extremely basic, only supporting menus and not providing any way
to load or save the configuration.
Signed-off-by: Simon Glass <sjg@chromium.org>
The only way to create an expo at present is by calling the functions to
create each object. It is useful to have more data-driven approach, where
the objects can be specified in a suitable file format and created from
that. This makes testing easier as well.
Add support for describing an expo in a devicetree node. This allows more
complex tests to be set up, as well as providing an easier format for
users. It also provides a better basis for the upcoming configuration
editor.
Signed-off-by: Simon Glass <sjg@chromium.org>
In 'popup' mode, the expo allows moving around the objects in a scene.
When 'enter' is pressed on a menu, it opens and the user can move around
the items in the menu.
Implement this using keypress handles and actions.
Signed-off-by: Simon Glass <sjg@chromium.org>
When a popup menu is closed it shows only the selected item. When it is
open it shows a background and all items, with a highlight that can be
moved between the items.
Add the drawing logic for this.
Signed-off-by: Simon Glass <sjg@chromium.org>
At present we only support a single menu, so all that can be pointed to
is the current menu item. Rename this action so that we can also add
an action for pointing to an object. This will allow cycling through
the objects in a scene.
Signed-off-by: Simon Glass <sjg@chromium.org>
At present only a single menu is supported. All items are shown and a
pointer object points to the current item.
Add support for multiple menus, one of which is highlighted, indicated
by the highlight_id property in the scene.
The highlighted menu item has a SCENEOF_POINT flag, indicating that it
is currently pointed to.
The popup menu is normally closed, in which case it shows only the
current menu item. When it is opened, it shows all items, allowing the
user to select one.
Rather than requiring the menu item to have a description, require it to
have a label. Use the label (only) for the popup menu.
With this, most of the drawing and layout logic is complete.
Signed-off-by: Simon Glass <sjg@chromium.org>
It is a pain to manually set the fonts of all objects to be consistent.
Some spacing settings are also better set globally than by manually
positioning each object.
Add a 'theme' to the expo, to hold this information. For now it includes
only the font size.
Signed-off-by: Simon Glass <sjg@chromium.org>
Provide a way to set the full dimensions of objects, i.e. including the
width and height.
For menus, calculate the bounding box of all objects in the menu. Set all
labels to be the same size, so that highlighting works correct, once
implemented.
Signed-off-by: Simon Glass <sjg@chromium.org>
We currently have just a 'hide' property for each object. In preparation
for adding more properties, convert the struct to use a flags value,
instead of individual booleans. This is more extensible.
Signed-off-by: Simon Glass <sjg@chromium.org>
At present objects only have a position so it is not possible to determine
the amount of space they take up on the display.
Add width and height properties, using a struct to keep all the dimensions
together.
For now this is not used. Future work will set up these new properties.
Signed-off-by: Simon Glass <sjg@chromium.org>
Provide a way to set this value so that it is easy to separate the
statically allocated IDs (generated by the caller) from those
generated dynamically by expo itself.
Signed-off-by: Simon Glass <sjg@chromium.org>
This is easier to deal with if it uses the existing string handling,
since we will be able to use translations, etc. in the future.
Update it to use an ID instead of a string.
Signed-off-by: Simon Glass <sjg@chromium.org>
An expo is a way of presenting and collecting information from the
user. It consists of a collection of 'scenes' of which only one is
presented at a time. An expo is typically used to show a boot menu
and allow settings to be changed.
One created, the same expo can be automatically presented in graphical
form using a vidconsole, or in text form on a serial console.
Add an initial implementation of the expo itself. Supports for scenes
and objects is provided later.
Signed-off-by: Simon Glass <sjg@chromium.org>
