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Simon Glassd8adbe92023-01-06 08:52:36 -06001/* SPDX-License-Identifier: GPL-2.0+ */
2/*
3 * Copyright 2022 Google LLC
4 * Written by Simon Glass <sjg@chromium.org>
5 */
6
Simon Glass8df4a4e2023-08-14 16:40:25 -06007#ifndef __EXPO_H
8#define __EXPO_H
Simon Glassd8adbe92023-01-06 08:52:36 -06009
Simon Glassa968f5f2023-10-01 19:13:31 -060010#include <abuf.h>
Simon Glassc999e172023-06-01 10:22:53 -060011#include <dm/ofnode_decl.h>
Simon Glassd8adbe92023-01-06 08:52:36 -060012#include <linux/list.h>
13
14struct udevice;
15
Simon Glassa968f5f2023-10-01 19:13:31 -060016#include <cli.h>
17
Simon Glassd8adbe92023-01-06 08:52:36 -060018/**
19 * enum expoact_type - types of actions reported by the expo
20 *
21 * @EXPOACT_NONE: no action
Simon Glassf0e1e8c2023-06-01 10:22:59 -060022 * @EXPOACT_POINT_OBJ: object was highlighted (@id indicates which)
Simon Glass719a3c62023-06-01 10:22:56 -060023 * @EXPOACT_POINT_ITEM: menu item was highlighted (@id indicates which)
Simon Glassd8adbe92023-01-06 08:52:36 -060024 * @EXPOACT_SELECT: menu item was selected (@id indicates which)
Simon Glassf0e1e8c2023-06-01 10:22:59 -060025 * @EXPOACT_OPEN: menu was opened, so an item can be selected (@id indicates
26 * which menu object)
27 * @EXPOACT_CLOSE: menu was closed (@id indicates which menu object)
Simon Glassd8adbe92023-01-06 08:52:36 -060028 * @EXPOACT_QUIT: request to exit the menu
29 */
30enum expoact_type {
31 EXPOACT_NONE,
Simon Glassf0e1e8c2023-06-01 10:22:59 -060032 EXPOACT_POINT_OBJ,
Simon Glass719a3c62023-06-01 10:22:56 -060033 EXPOACT_POINT_ITEM,
Simon Glassd8adbe92023-01-06 08:52:36 -060034 EXPOACT_SELECT,
Simon Glassf0e1e8c2023-06-01 10:22:59 -060035 EXPOACT_OPEN,
36 EXPOACT_CLOSE,
Simon Glassd8adbe92023-01-06 08:52:36 -060037 EXPOACT_QUIT,
38};
39
40/**
41 * struct expo_action - an action report by the expo
42 *
43 * @type: Action type (EXPOACT_NONE if there is no action)
Simon Glass719a3c62023-06-01 10:22:56 -060044 * @select: Used for EXPOACT_POINT_ITEM and EXPOACT_SELECT
Heinrich Schuchardta99e8fe2024-09-18 23:58:03 +020045 * @select.id: ID number of the object affected.
Simon Glassd8adbe92023-01-06 08:52:36 -060046 */
47struct expo_action {
48 enum expoact_type type;
49 union {
50 struct {
51 int id;
52 } select;
53 };
54};
55
56/**
Simon Glassc999e172023-06-01 10:22:53 -060057 * struct expo_theme - theme for the expo
58 *
59 * @font_size: Default font size for all text
60 * @menu_inset: Inset width (on each side and top/bottom) for menu items
61 * @menuitem_gap_y: Gap between menu items in pixels
62 */
63struct expo_theme {
64 u32 font_size;
65 u32 menu_inset;
66 u32 menuitem_gap_y;
67};
68
69/**
Simon Glassd8adbe92023-01-06 08:52:36 -060070 * struct expo - information about an expo
71 *
72 * A group of scenes which can be presented to the user, typically to obtain
73 * input or to make a selection.
74 *
75 * @name: Name of the expo (allocated)
76 * @display: Display to use (`UCLASS_VIDEO`), or NULL to use text mode
Simon Glass67e2af12023-06-01 10:22:34 -060077 * @cons: Console to use (`UCLASS_VIDEO_CONSOLE`), or NULL to use text mode
Simon Glassd8adbe92023-01-06 08:52:36 -060078 * @scene_id: Current scene ID (0 if none)
79 * @next_id: Next ID number to use, for automatic allocation
80 * @action: Action selected by user. At present only one is supported, with the
81 * type set to EXPOACT_NONE if there is no action
82 * @text_mode: true to use text mode for the menu (no vidconsole)
Simon Glassd353b752023-06-01 10:22:55 -060083 * @popup: true to use popup menus, instead of showing all items
Simon Glassd8adbe92023-01-06 08:52:36 -060084 * @priv: Private data for the controller
Simon Glassc999e172023-06-01 10:22:53 -060085 * @theme: Information about fonts styles, etc.
Simon Glassd8adbe92023-01-06 08:52:36 -060086 * @scene_head: List of scenes
87 * @str_head: list of strings
88 */
89struct expo {
90 char *name;
91 struct udevice *display;
Simon Glass67e2af12023-06-01 10:22:34 -060092 struct udevice *cons;
Simon Glassd8adbe92023-01-06 08:52:36 -060093 uint scene_id;
94 uint next_id;
95 struct expo_action action;
96 bool text_mode;
Simon Glassd353b752023-06-01 10:22:55 -060097 bool popup;
Simon Glassd8adbe92023-01-06 08:52:36 -060098 void *priv;
Simon Glassc999e172023-06-01 10:22:53 -060099 struct expo_theme theme;
Simon Glassd8adbe92023-01-06 08:52:36 -0600100 struct list_head scene_head;
101 struct list_head str_head;
102};
103
104/**
105 * struct expo_string - a string that can be used in an expo
106 *
107 * @id: ID number of the string
108 * @str: String
109 * @sibling: Node to link this object to its siblings
110 */
111struct expo_string {
112 uint id;
113 const char *str;
114 struct list_head sibling;
115};
116
117/**
118 * struct scene - information about a scene in an expo
119 *
120 * A collection of text/image/menu items in an expo
121 *
122 * @expo: Expo this scene is part of
123 * @name: Name of the scene (allocated)
124 * @id: ID number of the scene
Simon Glassea274b62023-06-01 10:22:27 -0600125 * @title_id: String ID of title of the scene (allocated)
Simon Glassd353b752023-06-01 10:22:55 -0600126 * @highlight_id: ID of highlighted object, if any
Simon Glassa968f5f2023-10-01 19:13:31 -0600127 * @cls: cread state to use for input
128 * @buf: Buffer for input
129 * @entry_save: Buffer to hold vidconsole text-entry information
Simon Glassd8adbe92023-01-06 08:52:36 -0600130 * @sibling: Node to link this scene to its siblings
131 * @obj_head: List of objects in the scene
132 */
133struct scene {
134 struct expo *expo;
135 char *name;
136 uint id;
Simon Glassea274b62023-06-01 10:22:27 -0600137 uint title_id;
Simon Glassd353b752023-06-01 10:22:55 -0600138 uint highlight_id;
Simon Glassa968f5f2023-10-01 19:13:31 -0600139 struct cli_line_state cls;
140 struct abuf buf;
141 struct abuf entry_save;
Simon Glassd8adbe92023-01-06 08:52:36 -0600142 struct list_head sibling;
143 struct list_head obj_head;
144};
145
146/**
147 * enum scene_obj_t - type of a scene object
148 *
149 * @SCENEOBJT_NONE: Used to indicate that the type does not matter
150 * @SCENEOBJT_IMAGE: Image data to render
151 * @SCENEOBJT_TEXT: Text line to render
152 * @SCENEOBJT_MENU: Menu containing items the user can select
Simon Glass6116e762023-10-01 19:13:32 -0600153 * @SCENEOBJT_TEXTLINE: Line of text the user can edit
Simon Glassd8adbe92023-01-06 08:52:36 -0600154 */
155enum scene_obj_t {
156 SCENEOBJT_NONE = 0,
157 SCENEOBJT_IMAGE,
158 SCENEOBJT_TEXT,
Simon Glass193bfea2023-10-01 19:13:27 -0600159
160 /* types from here on can be highlighted */
Simon Glassd8adbe92023-01-06 08:52:36 -0600161 SCENEOBJT_MENU,
Simon Glass6116e762023-10-01 19:13:32 -0600162 SCENEOBJT_TEXTLINE,
Simon Glassd8adbe92023-01-06 08:52:36 -0600163};
164
165/**
Simon Glass7b043952023-06-01 10:22:49 -0600166 * struct scene_dim - Dimensions of an object
167 *
168 * @x: x position, in pixels from left side
169 * @y: y position, in pixels from top
170 * @w: width, in pixels
171 * @h: height, in pixels
172 */
173struct scene_dim {
174 int x;
175 int y;
176 int w;
177 int h;
178};
179
180/**
Simon Glass6081b0f2023-06-01 10:22:50 -0600181 * enum scene_obj_flags_t - flags for objects
182 *
183 * @SCENEOF_HIDE: object should be hidden
Simon Glassd353b752023-06-01 10:22:55 -0600184 * @SCENEOF_POINT: object should be highlighted
185 * @SCENEOF_OPEN: object should be opened (e.g. menu is opened so that an option
186 * can be selected)
Simon Glass6081b0f2023-06-01 10:22:50 -0600187 */
188enum scene_obj_flags_t {
189 SCENEOF_HIDE = 1 << 0,
Simon Glassd353b752023-06-01 10:22:55 -0600190 SCENEOF_POINT = 1 << 1,
191 SCENEOF_OPEN = 1 << 2,
Simon Glass6081b0f2023-06-01 10:22:50 -0600192};
193
Simon Glassa968f5f2023-10-01 19:13:31 -0600194enum {
195 /* Maximum number of characters allowed in an line editor */
196 EXPO_MAX_CHARS = 250,
197};
198
Simon Glass6081b0f2023-06-01 10:22:50 -0600199/**
Simon Glassd8adbe92023-01-06 08:52:36 -0600200 * struct scene_obj - information about an object in a scene
201 *
202 * @scene: Scene that this object relates to
203 * @name: Name of the object (allocated)
204 * @id: ID number of the object
205 * @type: Type of this object
Simon Glass7b043952023-06-01 10:22:49 -0600206 * @dim: Dimensions for this object
Simon Glass6081b0f2023-06-01 10:22:50 -0600207 * @flags: Flags for this object
Simon Glass2b91ca62023-08-14 16:40:37 -0600208 * @bit_length: Number of bits used for this object in CMOS RAM
209 * @start_bit: Start bit to use for this object in CMOS RAM
Simon Glassd8adbe92023-01-06 08:52:36 -0600210 * @sibling: Node to link this object to its siblings
211 */
212struct scene_obj {
213 struct scene *scene;
214 char *name;
215 uint id;
216 enum scene_obj_t type;
Simon Glass7b043952023-06-01 10:22:49 -0600217 struct scene_dim dim;
Simon Glass2b91ca62023-08-14 16:40:37 -0600218 u8 flags;
219 u8 bit_length;
220 u16 start_bit;
Simon Glassd8adbe92023-01-06 08:52:36 -0600221 struct list_head sibling;
222};
223
Simon Glass193bfea2023-10-01 19:13:27 -0600224/* object can be highlighted when moving around expo */
225static inline bool scene_obj_can_highlight(const struct scene_obj *obj)
226{
227 return obj->type >= SCENEOBJT_MENU;
228}
229
Simon Glassd8adbe92023-01-06 08:52:36 -0600230/**
231 * struct scene_obj_img - information about an image object in a scene
232 *
233 * This is a rectangular image which is blitted onto the display
234 *
235 * @obj: Basic object information
236 * @data: Image data in BMP format
237 */
238struct scene_obj_img {
239 struct scene_obj obj;
240 char *data;
241};
242
243/**
244 * struct scene_obj_txt - information about a text object in a scene
245 *
246 * This is a single-line text object
247 *
248 * @obj: Basic object information
249 * @str_id: ID of the text string to display
250 * @font_name: Name of font (allocated by caller)
251 * @font_size: Nominal size of font in pixels
252 */
253struct scene_obj_txt {
254 struct scene_obj obj;
255 uint str_id;
256 const char *font_name;
257 uint font_size;
258};
259
260/**
261 * struct scene_obj_menu - information about a menu object in a scene
262 *
263 * A menu has a number of items which can be selected by the user
264 *
265 * It also has:
266 *
267 * - a text/image object (@pointer_id) which points to the current item
268 * (@cur_item_id)
269 *
270 * - a preview object which shows an image related to the current item
271 *
272 * @obj: Basic object information
273 * @title_id: ID of the title text, or 0 if none
274 * @cur_item_id: ID of the current menu item, or 0 if none
275 * @pointer_id: ID of the object pointing to the current selection
276 * @item_head: List of items in the menu
277 */
278struct scene_obj_menu {
279 struct scene_obj obj;
280 uint title_id;
281 uint cur_item_id;
282 uint pointer_id;
283 struct list_head item_head;
284};
285
286/**
287 * enum scene_menuitem_flags_t - flags for menu items
288 *
289 * @SCENEMIF_GAP_BEFORE: Add a gap before this item
290 */
291enum scene_menuitem_flags_t {
292 SCENEMIF_GAP_BEFORE = 1 << 0,
293};
294
295/**
296 * struct scene_menitem - a menu item in a menu
297 *
298 * A menu item has:
299 *
300 * - text object holding the name (short) and description (can be longer)
301 * - a text object holding the keypress
302 *
303 * @name: Name of the item (this is allocated by this call)
304 * @id: ID number of the object
305 * @key_id: ID of text object to use as the keypress to show
306 * @label_id: ID of text object to use as the label text
307 * @desc_id: ID of text object to use as the description text
308 * @preview_id: ID of the preview object, or 0 if none
309 * @flags: Flags for this item
310 * @sibling: Node to link this item to its siblings
311 */
312struct scene_menitem {
313 char *name;
314 uint id;
315 uint key_id;
316 uint label_id;
317 uint desc_id;
318 uint preview_id;
319 uint flags;
320 struct list_head sibling;
321};
322
323/**
Simon Glass6116e762023-10-01 19:13:32 -0600324 * struct scene_obj_textline - information about a textline in a scene
325 *
326 * A textline has a prompt and a line of editable text
327 *
328 * @obj: Basic object information
329 * @label_id: ID of the label text, or 0 if none
330 * @edit_id: ID of the editable text
331 * @max_chars: Maximum number of characters allowed
332 * @buf: Text buffer containing current text
333 * @pos: Cursor position
334 */
335struct scene_obj_textline {
336 struct scene_obj obj;
337 uint label_id;
338 uint edit_id;
339 uint max_chars;
340 struct abuf buf;
341 uint pos;
342};
343
344/**
Simon Glassd8adbe92023-01-06 08:52:36 -0600345 * expo_new() - create a new expo
346 *
347 * Allocates a new expo
348 *
349 * @name: Name of expo (this is allocated by this call)
350 * @priv: Private data for the controller
351 * @expp: Returns a pointer to the new expo on success
352 * Returns: 0 if OK, -ENOMEM if out of memory
353 */
354int expo_new(const char *name, void *priv, struct expo **expp);
355
356/**
357 * expo_destroy() - Destroy an expo and free all its memory
358 *
359 * @exp: Expo to destroy
360 */
361void expo_destroy(struct expo *exp);
362
363/**
Simon Glass6e9e4152023-06-01 10:22:47 -0600364 * expo_set_dynamic_start() - Set the start of the 'dynamic' IDs
365 *
366 * It is common for a set of 'static' IDs to be used to refer to objects in the
367 * expo. These typically use an enum so that they are defined in sequential
368 * order.
369 *
370 * Dynamic IDs (for objects not in the enum) are intended to be used for
371 * objects to which the code does not need to refer. These are ideally located
372 * above the static IDs.
373 *
374 * Use this function to set the start of the dynamic range, making sure that the
375 * value is higher than all the statically allocated IDs.
376 *
377 * @exp: Expo to update
378 * @dyn_start: Start ID that expo should use for dynamic allocation
379 */
380void expo_set_dynamic_start(struct expo *exp, uint dyn_start);
381
382/**
Simon Glassd8adbe92023-01-06 08:52:36 -0600383 * expo_str() - add a new string to an expo
384 *
385 * @exp: Expo to update
386 * @name: Name to use (this is allocated by this call)
387 * @id: ID to use for the new object (0 to allocate one)
388 * @str: Pointer to text to display (allocated by caller)
389 * Returns: ID number for the object (typically @id), or -ve on error
390 */
391int expo_str(struct expo *exp, const char *name, uint id, const char *str);
392
393/**
394 * expo_get_str() - Get a string by ID
395 *
396 * @exp: Expo to use
397 * @id: String ID to look up
398 * @returns string, or NULL if not found
399 */
400const char *expo_get_str(struct expo *exp, uint id);
401
402/**
403 * expo_set_display() - set the display to use for a expo
404 *
405 * @exp: Expo to update
406 * @dev: Display to use (`UCLASS_VIDEO`), NULL to use text mode
407 * Returns: 0 (always)
408 */
409int expo_set_display(struct expo *exp, struct udevice *dev);
410
411/**
Simon Glass7a960052023-06-01 10:22:52 -0600412 * expo_calc_dims() - Calculate the dimensions of the objects
413 *
414 * Updates the width and height of all objects based on their contents
415 *
416 * @exp: Expo to update
417 * Returns 0 if OK, -ENOTSUPP if there is no graphical console
418 */
419int expo_calc_dims(struct expo *exp);
420
421/**
Simon Glassd8adbe92023-01-06 08:52:36 -0600422 * expo_set_scene_id() - Set the current scene ID
423 *
424 * @exp: Expo to update
425 * @scene_id: New scene ID to use (0 to select no scene)
426 * Returns: 0 if OK, -ENOENT if there is no scene with that ID
427 */
428int expo_set_scene_id(struct expo *exp, uint scene_id);
429
430/**
Simon Glassc8925112023-06-01 10:23:02 -0600431 * expo_first_scene_id() - Get the ID of the first scene
432 *
433 * @exp: Expo to check
434 * Returns: Scene ID of first scene, or -ENOENT if there are no scenes
435 */
436int expo_first_scene_id(struct expo *exp);
437
438/**
Simon Glassd8adbe92023-01-06 08:52:36 -0600439 * expo_render() - render the expo on the display / console
440 *
441 * @exp: Expo to render
442 *
443 * Returns: 0 if OK, -ECHILD if there is no current scene, -ENOENT if the
444 * current scene is not found, other error if something else goes wrong
445 */
446int expo_render(struct expo *exp);
447
448/**
Simon Glassb2c40342023-06-01 10:22:37 -0600449 * expo_set_text_mode() - Controls whether the expo renders in text mode
Simon Glassd8adbe92023-01-06 08:52:36 -0600450 *
451 * @exp: Expo to update
452 * @text_mode: true to use text mode, false to use the console
453 */
Simon Glassb2c40342023-06-01 10:22:37 -0600454void expo_set_text_mode(struct expo *exp, bool text_mode);
Simon Glassd8adbe92023-01-06 08:52:36 -0600455
456/**
457 * scene_new() - create a new scene in a expo
458 *
459 * The scene is given the ID @id which must be unique across all scenes, objects
460 * and items. The expo's @next_id is updated to at least @id + 1
461 *
462 * @exp: Expo to update
463 * @name: Name to use (this is allocated by this call)
464 * @id: ID to use for the new scene (0 to allocate one)
465 * @scnp: Returns a pointer to the new scene on success
466 * Returns: ID number for the scene (typically @id), or -ve on error
467 */
468int scene_new(struct expo *exp, const char *name, uint id, struct scene **scnp);
469
470/**
471 * expo_lookup_scene_id() - Look up a scene by ID
472 *
473 * @exp: Expo to check
474 * @scene_id: Scene ID to look up
475 * @returns pointer to scene if found, else NULL
476 */
477struct scene *expo_lookup_scene_id(struct expo *exp, uint scene_id);
478
479/**
Simon Glass01922ec2023-06-01 10:22:57 -0600480 * scene_highlight_first() - Highlight the first item in a scene
481 *
482 * This highlights the first item, so that the user can see that it is pointed
483 * to
484 *
485 * @scn: Scene to update
486 */
487void scene_highlight_first(struct scene *scn);
488
489/**
490 * scene_set_highlight_id() - Set the object which is highlighted
491 *
492 * Sets a new object to highlight in the scene
493 *
494 * @scn: Scene to update
495 * @id: ID of object to highlight
496 */
497void scene_set_highlight_id(struct scene *scn, uint id);
498
499/**
500 * scene_set_open() - Set whether an item is open or not
501 *
502 * @scn: Scene to update
503 * @id: ID of object to update
504 * @open: true to open the object, false to close it
505 * Returns: 0 if OK, -ENOENT if @id is invalid
506 */
507int scene_set_open(struct scene *scn, uint id, bool open);
508
509/**
Simon Glassd8adbe92023-01-06 08:52:36 -0600510 * scene_title_set() - set the scene title
511 *
512 * @scn: Scene to update
Simon Glassea274b62023-06-01 10:22:27 -0600513 * @title_id: Title ID to set
514 * Returns: 0 if OK
Simon Glassd8adbe92023-01-06 08:52:36 -0600515 */
Simon Glassea274b62023-06-01 10:22:27 -0600516int scene_title_set(struct scene *scn, uint title_id);
Simon Glassd8adbe92023-01-06 08:52:36 -0600517
518/**
519 * scene_obj_count() - Count the number of objects in a scene
520 *
521 * @scn: Scene to check
522 * Returns: number of objects in the scene, 0 if none
523 */
524int scene_obj_count(struct scene *scn);
525
526/**
527 * scene_img() - add a new image to a scene
528 *
529 * @scn: Scene to update
530 * @name: Name to use (this is allocated by this call)
531 * @id: ID to use for the new object (0 to allocate one)
532 * @data: Pointer to image data
533 * @imgp: If non-NULL, returns the new object
534 * Returns: ID number for the object (typically @id), or -ve on error
535 */
536int scene_img(struct scene *scn, const char *name, uint id, char *data,
537 struct scene_obj_img **imgp);
538
539/**
540 * scene_txt() - add a new text object to a scene
541 *
542 * @scn: Scene to update
543 * @name: Name to use (this is allocated by this call)
544 * @id: ID to use for the new object (0 to allocate one)
545 * @str_id: ID of the string to use
546 * @txtp: If non-NULL, returns the new object
547 * Returns: ID number for the object (typically @id), or -ve on error
548 */
549int scene_txt(struct scene *scn, const char *name, uint id, uint str_id,
550 struct scene_obj_txt **txtp);
551
552/**
Simon Glassdb6a0512023-10-01 19:13:23 -0600553 * scene_txt_str() - add a new string to expo and text object to a scene
Simon Glassd8adbe92023-01-06 08:52:36 -0600554 *
555 * @scn: Scene to update
556 * @name: Name to use (this is allocated by this call)
557 * @id: ID to use for the new object (0 to allocate one)
558 * @str_id: ID of the string to use
559 * @str: Pointer to text to display (allocated by caller)
560 * @txtp: If non-NULL, returns the new object
561 * Returns: ID number for the object (typically @id), or -ve on error
562 */
563int scene_txt_str(struct scene *scn, const char *name, uint id, uint str_id,
564 const char *str, struct scene_obj_txt **txtp);
565
566/**
567 * scene_menu() - create a menu
568 *
569 * @scn: Scene to update
570 * @name: Name to use (this is allocated by this call)
571 * @id: ID to use for the new object (0 to allocate one)
572 * @menup: If non-NULL, returns the new object
573 * Returns: ID number for the object (typically @id), or -ve on error
574 */
575int scene_menu(struct scene *scn, const char *name, uint id,
576 struct scene_obj_menu **menup);
577
578/**
Simon Glass6116e762023-10-01 19:13:32 -0600579 * scene_textline() - create a textline
580 *
581 * @scn: Scene to update
582 * @name: Name to use (this is allocated by this call)
583 * @id: ID to use for the new object (0 to allocate one)
584 * @max_chars: Maximum length of the textline in characters
585 * @tlinep: If non-NULL, returns the new object
586 * Returns: ID number for the object (typically @id), or -ve on error
587 */
588int scene_textline(struct scene *scn, const char *name, uint id, uint max_chars,
589 struct scene_obj_textline **tlinep);
590
591/**
Simon Glassd8adbe92023-01-06 08:52:36 -0600592 * scene_txt_set_font() - Set the font for an object
593 *
594 * @scn: Scene to update
595 * @id: ID of object to update
596 * @font_name: Font name to use (allocated by caller)
597 * @font_size: Font size to use (nominal height in pixels)
598 */
599int scene_txt_set_font(struct scene *scn, uint id, const char *font_name,
600 uint font_size);
601
602/**
603 * scene_obj_set_pos() - Set the postion of an object
604 *
605 * @scn: Scene to update
606 * @id: ID of object to update
607 * @x: x position, in pixels from left side
608 * @y: y position, in pixels from top
609 * Returns: 0 if OK, -ENOENT if @id is invalid
610 */
611int scene_obj_set_pos(struct scene *scn, uint id, int x, int y);
612
613/**
Simon Glass7a960052023-06-01 10:22:52 -0600614 * scene_obj_set_size() - Set the size of an object
615 *
616 * @scn: Scene to update
617 * @id: ID of object to update
618 * @w: width in pixels
619 * @h: height in pixels
620 * Returns: 0 if OK, -ENOENT if @id is invalid
621 */
622int scene_obj_set_size(struct scene *scn, uint id, int w, int h);
623
624/**
Simon Glassd8adbe92023-01-06 08:52:36 -0600625 * scene_obj_set_hide() - Set whether an object is hidden
626 *
627 * The update happens when the expo is next rendered.
628 *
629 * @scn: Scene to update
630 * @id: ID of object to update
631 * @hide: true to hide the object, false to show it
632 * Returns: 0 if OK, -ENOENT if @id is invalid
633 */
634int scene_obj_set_hide(struct scene *scn, uint id, bool hide);
635
636/**
637 * scene_menu_set_title() - Set the title of a menu
638 *
639 * @scn: Scene to update
640 * @id: ID of menu object to update
641 * @title_id: ID of text object to use as the title
642 * Returns: 0 if OK, -ENOENT if @id is invalid, -EINVAL if @title_id is invalid
643 */
644int scene_menu_set_title(struct scene *scn, uint id, uint title_id);
645
646/**
647 * scene_menu_set_pointer() - Set the item pointer for a menu
648 *
649 * This is a visual indicator of the current item, typically a ">" character
650 * which sits next to the current item and moves when the user presses the
651 * up/down arrow keys
652 *
653 * @scn: Scene to update
654 * @id: ID of menu object to update
655 * @cur_item_id: ID of text or image object to use as a pointer to the current
656 * item
657 * Returns: 0 if OK, -ENOENT if @id is invalid, -EINVAL if @cur_item_id is invalid
658 */
659int scene_menu_set_pointer(struct scene *scn, uint id, uint cur_item_id);
660
661/**
662 * scene_obj_get_hw() - Get width and height of an object in a scene
663 *
664 * @scn: Scene to check
665 * @id: ID of menu object to check
666 * @widthp: If non-NULL, returns width of object in pixels
667 * Returns: Height of object in pixels
668 */
669int scene_obj_get_hw(struct scene *scn, uint id, int *widthp);
670
671/**
672 * scene_menuitem() - Add an item to a menu
673 *
674 * @scn: Scene to update
675 * @menu_id: ID of menu object to update
676 * @name: Name to use (this is allocated by this call)
677 * @id: ID to use for the new object (0 to allocate one)
678 * @key_id: ID of text object to use as the keypress to show
679 * @label_id: ID of text object to use as the label text
680 * @desc_id: ID of text object to use as the description text
681 * @preview_id: ID of object to use as the preview (text or image)
682 * @flags: Flags for this item (enum scene_menuitem_flags_t)
683 * @itemp: If non-NULL, returns the new object
684 * Returns: ID number for the item (typically @id), or -ve on error
685 */
686int scene_menuitem(struct scene *scn, uint menu_id, const char *name, uint id,
687 uint key_id, uint label_id, uint desc_id, uint preview_id,
688 uint flags, struct scene_menitem **itemp);
689
690/**
691 * scene_arrange() - Arrange the scene to deal with object sizes
692 *
693 * Updates any menus in the scene so that their objects are in the right place.
694 *
695 * @scn: Scene to arrange
696 * Returns: 0 if OK, -ve on error
697 */
698int scene_arrange(struct scene *scn);
699
700/**
701 * expo_send_key() - set a keypress to the expo
702 *
703 * @exp: Expo to receive the key
704 * @key: Key to send (ASCII or enum bootmenu_key)
705 * Returns: 0 if OK, -ECHILD if there is no current scene
706 */
707int expo_send_key(struct expo *exp, int key);
708
709/**
710 * expo_action_get() - read user input from the expo
711 *
712 * @exp: Expo to check
713 * @act: Returns action
714 * Returns: 0 if OK, -EAGAIN if there was no action to return
715 */
716int expo_action_get(struct expo *exp, struct expo_action *act);
717
Simon Glassc999e172023-06-01 10:22:53 -0600718/**
719 * expo_apply_theme() - Apply a theme to an expo
720 *
721 * @exp: Expo to update
722 * @node: Node containing the theme
723 */
724int expo_apply_theme(struct expo *exp, ofnode node);
725
Simon Glass61300722023-06-01 10:23:01 -0600726/**
727 * expo_build() - Build an expo from an FDT description
728 *
729 * Build a complete expo from a description in the provided devicetree.
730 *
Massimo Pegorerc8c70022023-09-09 12:32:28 +0200731 * See doc/develop/expo.rst for a description of the format
Simon Glass61300722023-06-01 10:23:01 -0600732 *
733 * @root: Root node for expo description
734 * @expp: Returns the new expo
735 * Returns: 0 if OK, -ENOMEM if out of memory, -EINVAL if there is a format
736 * error, -ENOENT if there is a references to a non-existent string
737 */
738int expo_build(ofnode root, struct expo **expp);
739
Simon Glass8df4a4e2023-08-14 16:40:25 -0600740#endif /*__EXPO_H */