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a0874dc4ac
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>
699 lines
19 KiB
C
699 lines
19 KiB
C
/* SPDX-License-Identifier: GPL-2.0+ */
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/*
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* Copyright 2022 Google LLC
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* Written by Simon Glass <sjg@chromium.org>
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*/
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#ifndef __SCENE_H
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#define __SCENE_H
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#include <dm/ofnode_decl.h>
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#include <linux/list.h>
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struct udevice;
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struct video_priv;
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/**
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* enum expoact_type - types of actions reported by the expo
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*
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* @EXPOACT_NONE: no action
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* @EXPOACT_POINT_OBJ: object was highlighted (@id indicates which)
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* @EXPOACT_POINT_ITEM: menu item was highlighted (@id indicates which)
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* @EXPOACT_SELECT: menu item was selected (@id indicates which)
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* @EXPOACT_OPEN: menu was opened, so an item can be selected (@id indicates
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* which menu object)
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* @EXPOACT_CLOSE: menu was closed (@id indicates which menu object)
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* @EXPOACT_QUIT: request to exit the menu
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*/
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enum expoact_type {
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EXPOACT_NONE,
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EXPOACT_POINT_OBJ,
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EXPOACT_POINT_ITEM,
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EXPOACT_SELECT,
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EXPOACT_OPEN,
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EXPOACT_CLOSE,
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EXPOACT_QUIT,
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};
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/**
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* struct expo_action - an action report by the expo
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*
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* @type: Action type (EXPOACT_NONE if there is no action)
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* @select: Used for EXPOACT_POINT_ITEM and EXPOACT_SELECT
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* @id: ID number of the object affected.
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*/
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struct expo_action {
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enum expoact_type type;
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union {
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struct {
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int id;
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} select;
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};
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};
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/**
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* struct expo_theme - theme for the expo
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*
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* @font_size: Default font size for all text
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* @menu_inset: Inset width (on each side and top/bottom) for menu items
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* @menuitem_gap_y: Gap between menu items in pixels
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*/
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struct expo_theme {
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u32 font_size;
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u32 menu_inset;
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u32 menuitem_gap_y;
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};
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/**
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* struct expo - information about an expo
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*
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* A group of scenes which can be presented to the user, typically to obtain
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* input or to make a selection.
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*
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* @name: Name of the expo (allocated)
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* @display: Display to use (`UCLASS_VIDEO`), or NULL to use text mode
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* @cons: Console to use (`UCLASS_VIDEO_CONSOLE`), or NULL to use text mode
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* @scene_id: Current scene ID (0 if none)
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* @next_id: Next ID number to use, for automatic allocation
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* @action: Action selected by user. At present only one is supported, with the
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* type set to EXPOACT_NONE if there is no action
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* @text_mode: true to use text mode for the menu (no vidconsole)
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* @popup: true to use popup menus, instead of showing all items
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* @priv: Private data for the controller
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* @theme: Information about fonts styles, etc.
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* @scene_head: List of scenes
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* @str_head: list of strings
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*/
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struct expo {
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char *name;
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struct udevice *display;
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struct udevice *cons;
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uint scene_id;
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uint next_id;
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struct expo_action action;
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bool text_mode;
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bool popup;
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void *priv;
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struct expo_theme theme;
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struct list_head scene_head;
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struct list_head str_head;
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};
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/**
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* struct expo_string - a string that can be used in an expo
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*
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* @id: ID number of the string
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* @str: String
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* @sibling: Node to link this object to its siblings
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*/
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struct expo_string {
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uint id;
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const char *str;
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struct list_head sibling;
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};
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/**
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* struct scene - information about a scene in an expo
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*
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* A collection of text/image/menu items in an expo
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*
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* @expo: Expo this scene is part of
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* @name: Name of the scene (allocated)
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* @id: ID number of the scene
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* @title_id: String ID of title of the scene (allocated)
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* @highlight_id: ID of highlighted object, if any
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* @sibling: Node to link this scene to its siblings
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* @obj_head: List of objects in the scene
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*/
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struct scene {
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struct expo *expo;
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char *name;
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uint id;
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uint title_id;
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uint highlight_id;
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struct list_head sibling;
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struct list_head obj_head;
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};
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/**
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* enum scene_obj_t - type of a scene object
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*
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* @SCENEOBJT_NONE: Used to indicate that the type does not matter
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* @SCENEOBJT_IMAGE: Image data to render
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* @SCENEOBJT_TEXT: Text line to render
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* @SCENEOBJT_MENU: Menu containing items the user can select
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*/
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enum scene_obj_t {
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SCENEOBJT_NONE = 0,
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SCENEOBJT_IMAGE,
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SCENEOBJT_TEXT,
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SCENEOBJT_MENU,
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};
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/**
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* struct scene_dim - Dimensions of an object
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*
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* @x: x position, in pixels from left side
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* @y: y position, in pixels from top
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* @w: width, in pixels
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* @h: height, in pixels
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*/
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struct scene_dim {
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int x;
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int y;
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int w;
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int h;
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};
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/**
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* enum scene_obj_flags_t - flags for objects
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*
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* @SCENEOF_HIDE: object should be hidden
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* @SCENEOF_POINT: object should be highlighted
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* @SCENEOF_OPEN: object should be opened (e.g. menu is opened so that an option
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* can be selected)
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*/
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enum scene_obj_flags_t {
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SCENEOF_HIDE = 1 << 0,
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SCENEOF_POINT = 1 << 1,
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SCENEOF_OPEN = 1 << 2,
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};
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/**
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* struct scene_obj - information about an object in a scene
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*
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* @scene: Scene that this object relates to
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* @name: Name of the object (allocated)
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* @id: ID number of the object
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* @type: Type of this object
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* @dim: Dimensions for this object
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* @flags: Flags for this object
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* @sibling: Node to link this object to its siblings
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*/
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struct scene_obj {
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struct scene *scene;
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char *name;
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uint id;
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enum scene_obj_t type;
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struct scene_dim dim;
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int flags;
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struct list_head sibling;
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};
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/**
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* struct scene_obj_img - information about an image object in a scene
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*
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* This is a rectangular image which is blitted onto the display
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*
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* @obj: Basic object information
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* @data: Image data in BMP format
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*/
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struct scene_obj_img {
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struct scene_obj obj;
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char *data;
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};
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/**
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* struct scene_obj_txt - information about a text object in a scene
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*
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* This is a single-line text object
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*
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* @obj: Basic object information
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* @str_id: ID of the text string to display
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* @font_name: Name of font (allocated by caller)
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* @font_size: Nominal size of font in pixels
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*/
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struct scene_obj_txt {
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struct scene_obj obj;
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uint str_id;
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const char *font_name;
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uint font_size;
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};
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/**
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* struct scene_obj_menu - information about a menu object in a scene
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*
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* A menu has a number of items which can be selected by the user
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*
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* It also has:
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*
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* - a text/image object (@pointer_id) which points to the current item
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* (@cur_item_id)
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*
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* - a preview object which shows an image related to the current item
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*
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* @obj: Basic object information
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* @title_id: ID of the title text, or 0 if none
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* @cur_item_id: ID of the current menu item, or 0 if none
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* @pointer_id: ID of the object pointing to the current selection
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* @item_head: List of items in the menu
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*/
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struct scene_obj_menu {
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struct scene_obj obj;
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uint title_id;
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uint cur_item_id;
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uint pointer_id;
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struct list_head item_head;
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};
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/**
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* enum scene_menuitem_flags_t - flags for menu items
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*
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* @SCENEMIF_GAP_BEFORE: Add a gap before this item
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*/
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enum scene_menuitem_flags_t {
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SCENEMIF_GAP_BEFORE = 1 << 0,
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};
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/**
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* struct scene_menitem - a menu item in a menu
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*
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* A menu item has:
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*
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* - text object holding the name (short) and description (can be longer)
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* - a text object holding the keypress
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*
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* @name: Name of the item (this is allocated by this call)
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* @id: ID number of the object
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* @key_id: ID of text object to use as the keypress to show
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* @label_id: ID of text object to use as the label text
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* @desc_id: ID of text object to use as the description text
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* @preview_id: ID of the preview object, or 0 if none
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* @flags: Flags for this item
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* @sibling: Node to link this item to its siblings
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*/
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struct scene_menitem {
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char *name;
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uint id;
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uint key_id;
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uint label_id;
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uint desc_id;
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uint preview_id;
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uint flags;
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struct list_head sibling;
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};
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/**
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* expo_new() - create a new expo
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*
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* Allocates a new expo
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*
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* @name: Name of expo (this is allocated by this call)
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* @priv: Private data for the controller
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* @expp: Returns a pointer to the new expo on success
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* Returns: 0 if OK, -ENOMEM if out of memory
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*/
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int expo_new(const char *name, void *priv, struct expo **expp);
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/**
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* expo_destroy() - Destroy an expo and free all its memory
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*
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* @exp: Expo to destroy
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*/
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void expo_destroy(struct expo *exp);
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/**
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* expo_set_dynamic_start() - Set the start of the 'dynamic' IDs
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*
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* It is common for a set of 'static' IDs to be used to refer to objects in the
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* expo. These typically use an enum so that they are defined in sequential
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* order.
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*
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* Dynamic IDs (for objects not in the enum) are intended to be used for
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* objects to which the code does not need to refer. These are ideally located
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* above the static IDs.
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*
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* Use this function to set the start of the dynamic range, making sure that the
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* value is higher than all the statically allocated IDs.
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*
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* @exp: Expo to update
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* @dyn_start: Start ID that expo should use for dynamic allocation
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*/
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void expo_set_dynamic_start(struct expo *exp, uint dyn_start);
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/**
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* expo_str() - add a new string to an expo
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*
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* @exp: Expo to update
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* @name: Name to use (this is allocated by this call)
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* @id: ID to use for the new object (0 to allocate one)
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* @str: Pointer to text to display (allocated by caller)
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* Returns: ID number for the object (typically @id), or -ve on error
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*/
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int expo_str(struct expo *exp, const char *name, uint id, const char *str);
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/**
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* expo_get_str() - Get a string by ID
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*
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* @exp: Expo to use
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* @id: String ID to look up
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* @returns string, or NULL if not found
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*/
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const char *expo_get_str(struct expo *exp, uint id);
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/**
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* expo_set_display() - set the display to use for a expo
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*
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* @exp: Expo to update
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* @dev: Display to use (`UCLASS_VIDEO`), NULL to use text mode
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* Returns: 0 (always)
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*/
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int expo_set_display(struct expo *exp, struct udevice *dev);
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/**
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* expo_calc_dims() - Calculate the dimensions of the objects
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*
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* Updates the width and height of all objects based on their contents
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*
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* @exp: Expo to update
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* Returns 0 if OK, -ENOTSUPP if there is no graphical console
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*/
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int expo_calc_dims(struct expo *exp);
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/**
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* expo_set_scene_id() - Set the current scene ID
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*
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* @exp: Expo to update
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* @scene_id: New scene ID to use (0 to select no scene)
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* Returns: 0 if OK, -ENOENT if there is no scene with that ID
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*/
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int expo_set_scene_id(struct expo *exp, uint scene_id);
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/**
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* expo_first_scene_id() - Get the ID of the first scene
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*
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* @exp: Expo to check
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* Returns: Scene ID of first scene, or -ENOENT if there are no scenes
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*/
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int expo_first_scene_id(struct expo *exp);
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/**
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* expo_render() - render the expo on the display / console
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*
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* @exp: Expo to render
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*
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* Returns: 0 if OK, -ECHILD if there is no current scene, -ENOENT if the
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* current scene is not found, other error if something else goes wrong
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*/
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int expo_render(struct expo *exp);
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/**
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* expo_set_text_mode() - Controls whether the expo renders in text mode
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*
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* @exp: Expo to update
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* @text_mode: true to use text mode, false to use the console
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*/
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void expo_set_text_mode(struct expo *exp, bool text_mode);
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/**
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* scene_new() - create a new scene in a expo
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*
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* The scene is given the ID @id which must be unique across all scenes, objects
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* and items. The expo's @next_id is updated to at least @id + 1
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*
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* @exp: Expo to update
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* @name: Name to use (this is allocated by this call)
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* @id: ID to use for the new scene (0 to allocate one)
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* @scnp: Returns a pointer to the new scene on success
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* Returns: ID number for the scene (typically @id), or -ve on error
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*/
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int scene_new(struct expo *exp, const char *name, uint id, struct scene **scnp);
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/**
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* expo_lookup_scene_id() - Look up a scene by ID
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*
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* @exp: Expo to check
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* @scene_id: Scene ID to look up
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* @returns pointer to scene if found, else NULL
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*/
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struct scene *expo_lookup_scene_id(struct expo *exp, uint scene_id);
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/**
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* scene_highlight_first() - Highlight the first item in a scene
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*
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* This highlights the first item, so that the user can see that it is pointed
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* to
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*
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* @scn: Scene to update
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*/
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void scene_highlight_first(struct scene *scn);
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/**
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* scene_set_highlight_id() - Set the object which is highlighted
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*
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* Sets a new object to highlight in the scene
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*
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* @scn: Scene to update
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* @id: ID of object to highlight
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*/
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void scene_set_highlight_id(struct scene *scn, uint id);
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/**
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* scene_set_open() - Set whether an item is open or not
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*
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* @scn: Scene to update
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* @id: ID of object to update
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* @open: true to open the object, false to close it
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* Returns: 0 if OK, -ENOENT if @id is invalid
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*/
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int scene_set_open(struct scene *scn, uint id, bool open);
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/**
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* scene_title_set() - set the scene title
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*
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* @scn: Scene to update
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* @title_id: Title ID to set
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* Returns: 0 if OK
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*/
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int scene_title_set(struct scene *scn, uint title_id);
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/**
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* scene_obj_count() - Count the number of objects in a scene
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*
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* @scn: Scene to check
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* Returns: number of objects in the scene, 0 if none
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*/
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int scene_obj_count(struct scene *scn);
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/**
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* scene_img() - add a new image to a scene
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*
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* @scn: Scene to update
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* @name: Name to use (this is allocated by this call)
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* @id: ID to use for the new object (0 to allocate one)
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* @data: Pointer to image data
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* @imgp: If non-NULL, returns the new object
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* Returns: ID number for the object (typically @id), or -ve on error
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*/
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int scene_img(struct scene *scn, const char *name, uint id, char *data,
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struct scene_obj_img **imgp);
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/**
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* scene_txt() - add a new text object to a scene
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*
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* @scn: Scene to update
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* @name: Name to use (this is allocated by this call)
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* @id: ID to use for the new object (0 to allocate one)
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* @str_id: ID of the string to use
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* @txtp: If non-NULL, returns the new object
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* Returns: ID number for the object (typically @id), or -ve on error
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*/
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int scene_txt(struct scene *scn, const char *name, uint id, uint str_id,
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struct scene_obj_txt **txtp);
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/**
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* scene_txt_str() - add a new string to expr and text object to a scene
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*
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* @scn: Scene to update
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* @name: Name to use (this is allocated by this call)
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* @id: ID to use for the new object (0 to allocate one)
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* @str_id: ID of the string to use
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* @str: Pointer to text to display (allocated by caller)
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* @txtp: If non-NULL, returns the new object
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* Returns: ID number for the object (typically @id), or -ve on error
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*/
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int scene_txt_str(struct scene *scn, const char *name, uint id, uint str_id,
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const char *str, struct scene_obj_txt **txtp);
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/**
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* scene_menu() - create a menu
|
|
*
|
|
* @scn: Scene to update
|
|
* @name: Name to use (this is allocated by this call)
|
|
* @id: ID to use for the new object (0 to allocate one)
|
|
* @menup: If non-NULL, returns the new object
|
|
* Returns: ID number for the object (typically @id), or -ve on error
|
|
*/
|
|
int scene_menu(struct scene *scn, const char *name, uint id,
|
|
struct scene_obj_menu **menup);
|
|
|
|
/**
|
|
* scene_txt_set_font() - Set the font for an object
|
|
*
|
|
* @scn: Scene to update
|
|
* @id: ID of object to update
|
|
* @font_name: Font name to use (allocated by caller)
|
|
* @font_size: Font size to use (nominal height in pixels)
|
|
*/
|
|
int scene_txt_set_font(struct scene *scn, uint id, const char *font_name,
|
|
uint font_size);
|
|
|
|
/**
|
|
* scene_obj_set_pos() - Set the postion of an object
|
|
*
|
|
* @scn: Scene to update
|
|
* @id: ID of object to update
|
|
* @x: x position, in pixels from left side
|
|
* @y: y position, in pixels from top
|
|
* Returns: 0 if OK, -ENOENT if @id is invalid
|
|
*/
|
|
int scene_obj_set_pos(struct scene *scn, uint id, int x, int y);
|
|
|
|
/**
|
|
* scene_obj_set_size() - Set the size of an object
|
|
*
|
|
* @scn: Scene to update
|
|
* @id: ID of object to update
|
|
* @w: width in pixels
|
|
* @h: height in pixels
|
|
* Returns: 0 if OK, -ENOENT if @id is invalid
|
|
*/
|
|
int scene_obj_set_size(struct scene *scn, uint id, int w, int h);
|
|
|
|
/**
|
|
* scene_obj_set_hide() - Set whether an object is hidden
|
|
*
|
|
* The update happens when the expo is next rendered.
|
|
*
|
|
* @scn: Scene to update
|
|
* @id: ID of object to update
|
|
* @hide: true to hide the object, false to show it
|
|
* Returns: 0 if OK, -ENOENT if @id is invalid
|
|
*/
|
|
int scene_obj_set_hide(struct scene *scn, uint id, bool hide);
|
|
|
|
/**
|
|
* scene_menu_set_title() - Set the title of a menu
|
|
*
|
|
* @scn: Scene to update
|
|
* @id: ID of menu object to update
|
|
* @title_id: ID of text object to use as the title
|
|
* Returns: 0 if OK, -ENOENT if @id is invalid, -EINVAL if @title_id is invalid
|
|
*/
|
|
int scene_menu_set_title(struct scene *scn, uint id, uint title_id);
|
|
|
|
/**
|
|
* scene_menu_set_pointer() - Set the item pointer for a menu
|
|
*
|
|
* This is a visual indicator of the current item, typically a ">" character
|
|
* which sits next to the current item and moves when the user presses the
|
|
* up/down arrow keys
|
|
*
|
|
* @scn: Scene to update
|
|
* @id: ID of menu object to update
|
|
* @cur_item_id: ID of text or image object to use as a pointer to the current
|
|
* item
|
|
* Returns: 0 if OK, -ENOENT if @id is invalid, -EINVAL if @cur_item_id is invalid
|
|
*/
|
|
int scene_menu_set_pointer(struct scene *scn, uint id, uint cur_item_id);
|
|
|
|
/**
|
|
* scene_obj_get_hw() - Get width and height of an object in a scene
|
|
*
|
|
* @scn: Scene to check
|
|
* @id: ID of menu object to check
|
|
* @widthp: If non-NULL, returns width of object in pixels
|
|
* Returns: Height of object in pixels
|
|
*/
|
|
int scene_obj_get_hw(struct scene *scn, uint id, int *widthp);
|
|
|
|
/**
|
|
* scene_menuitem() - Add an item to a menu
|
|
*
|
|
* @scn: Scene to update
|
|
* @menu_id: ID of menu object to update
|
|
* @name: Name to use (this is allocated by this call)
|
|
* @id: ID to use for the new object (0 to allocate one)
|
|
* @key_id: ID of text object to use as the keypress to show
|
|
* @label_id: ID of text object to use as the label text
|
|
* @desc_id: ID of text object to use as the description text
|
|
* @preview_id: ID of object to use as the preview (text or image)
|
|
* @flags: Flags for this item (enum scene_menuitem_flags_t)
|
|
* @itemp: If non-NULL, returns the new object
|
|
* Returns: ID number for the item (typically @id), or -ve on error
|
|
*/
|
|
int scene_menuitem(struct scene *scn, uint menu_id, const char *name, uint id,
|
|
uint key_id, uint label_id, uint desc_id, uint preview_id,
|
|
uint flags, struct scene_menitem **itemp);
|
|
|
|
/**
|
|
* scene_arrange() - Arrange the scene to deal with object sizes
|
|
*
|
|
* Updates any menus in the scene so that their objects are in the right place.
|
|
*
|
|
* @scn: Scene to arrange
|
|
* Returns: 0 if OK, -ve on error
|
|
*/
|
|
int scene_arrange(struct scene *scn);
|
|
|
|
/**
|
|
* expo_send_key() - set a keypress to the expo
|
|
*
|
|
* @exp: Expo to receive the key
|
|
* @key: Key to send (ASCII or enum bootmenu_key)
|
|
* Returns: 0 if OK, -ECHILD if there is no current scene
|
|
*/
|
|
int expo_send_key(struct expo *exp, int key);
|
|
|
|
/**
|
|
* expo_action_get() - read user input from the expo
|
|
*
|
|
* @exp: Expo to check
|
|
* @act: Returns action
|
|
* Returns: 0 if OK, -EAGAIN if there was no action to return
|
|
*/
|
|
int expo_action_get(struct expo *exp, struct expo_action *act);
|
|
|
|
/**
|
|
* expo_apply_theme() - Apply a theme to an expo
|
|
*
|
|
* @exp: Expo to update
|
|
* @node: Node containing the theme
|
|
*/
|
|
int expo_apply_theme(struct expo *exp, ofnode node);
|
|
|
|
/**
|
|
* expo_build() - Build an expo from an FDT description
|
|
*
|
|
* Build a complete expo from a description in the provided devicetree.
|
|
*
|
|
* See doc/developer/expo.rst for a description of the format
|
|
*
|
|
* @root: Root node for expo description
|
|
* @expp: Returns the new expo
|
|
* Returns: 0 if OK, -ENOMEM if out of memory, -EINVAL if there is a format
|
|
* error, -ENOENT if there is a references to a non-existent string
|
|
*/
|
|
int expo_build(ofnode root, struct expo **expp);
|
|
|
|
/**
|
|
* cedit_arange() - Arrange objects in a configuration-editor scene
|
|
*
|
|
* @exp: Expo to update
|
|
* @vid_priv: Private info of the video device
|
|
* @scene_id: scene ID to arrange
|
|
* Returns: 0 if OK, -ve on error
|
|
*/
|
|
int cedit_arange(struct expo *exp, struct video_priv *vid_priv, uint scene_id);
|
|
|
|
/**
|
|
* cedit_run() - Run a configuration editor
|
|
*
|
|
* This accepts input until the user quits with Escape
|
|
*
|
|
* @exp: Expo to use
|
|
* Returns: 0 if OK, -ve on error
|
|
*/
|
|
int cedit_run(struct expo *exp);
|
|
|
|
#endif /*__SCENE_H */
|