expo.c 5.1 KB

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  1. // SPDX-License-Identifier: GPL-2.0+
  2. /*
  3. * Implementation of a expo, a collection of scenes providing menu options
  4. *
  5. * Copyright 2022 Google LLC
  6. * Written by Simon Glass <sjg@chromium.org>
  7. */
  8. #define LOG_CATEGORY LOGC_EXPO
  9. #include <common.h>
  10. #include <dm.h>
  11. #include <expo.h>
  12. #include <malloc.h>
  13. #include <video.h>
  14. #include "scene_internal.h"
  15. int expo_new(const char *name, void *priv, struct expo **expp)
  16. {
  17. struct expo *exp;
  18. exp = calloc(1, sizeof(struct expo));
  19. if (!exp)
  20. return log_msg_ret("expo", -ENOMEM);
  21. exp->name = strdup(name);
  22. if (!exp->name) {
  23. free(exp);
  24. return log_msg_ret("name", -ENOMEM);
  25. }
  26. exp->priv = priv;
  27. INIT_LIST_HEAD(&exp->scene_head);
  28. INIT_LIST_HEAD(&exp->str_head);
  29. *expp = exp;
  30. return 0;
  31. }
  32. static void estr_destroy(struct expo_string *estr)
  33. {
  34. free(estr);
  35. }
  36. void expo_destroy(struct expo *exp)
  37. {
  38. struct scene *scn, *next;
  39. struct expo_string *estr, *enext;
  40. list_for_each_entry_safe(scn, next, &exp->scene_head, sibling)
  41. scene_destroy(scn);
  42. list_for_each_entry_safe(estr, enext, &exp->str_head, sibling)
  43. estr_destroy(estr);
  44. free(exp->name);
  45. free(exp);
  46. }
  47. uint resolve_id(struct expo *exp, uint id)
  48. {
  49. log_debug("resolve id %d\n", id);
  50. if (!id)
  51. id = exp->next_id++;
  52. else if (id >= exp->next_id)
  53. exp->next_id = id + 1;
  54. return id;
  55. }
  56. void expo_set_dynamic_start(struct expo *exp, uint dyn_start)
  57. {
  58. exp->next_id = dyn_start;
  59. }
  60. int expo_str(struct expo *exp, const char *name, uint id, const char *str)
  61. {
  62. struct expo_string *estr;
  63. estr = calloc(1, sizeof(struct expo_string));
  64. if (!estr)
  65. return log_msg_ret("obj", -ENOMEM);
  66. estr->id = resolve_id(exp, id);
  67. estr->str = str;
  68. list_add_tail(&estr->sibling, &exp->str_head);
  69. return estr->id;
  70. }
  71. const char *expo_get_str(struct expo *exp, uint id)
  72. {
  73. struct expo_string *estr;
  74. list_for_each_entry(estr, &exp->str_head, sibling) {
  75. if (estr->id == id)
  76. return estr->str;
  77. }
  78. return NULL;
  79. }
  80. int expo_set_display(struct expo *exp, struct udevice *dev)
  81. {
  82. struct udevice *cons;
  83. int ret;
  84. ret = device_find_first_child_by_uclass(dev, UCLASS_VIDEO_CONSOLE,
  85. &cons);
  86. if (ret)
  87. return log_msg_ret("con", ret);
  88. exp->display = dev;
  89. exp->cons = cons;
  90. return 0;
  91. }
  92. int expo_calc_dims(struct expo *exp)
  93. {
  94. struct scene *scn;
  95. int ret;
  96. if (!exp->cons)
  97. return log_msg_ret("dim", -ENOTSUPP);
  98. list_for_each_entry(scn, &exp->scene_head, sibling) {
  99. /*
  100. * Do the menus last so that all the menus' text objects
  101. * are dimensioned
  102. */
  103. ret = scene_calc_dims(scn, false);
  104. if (ret)
  105. return log_msg_ret("scn", ret);
  106. ret = scene_calc_dims(scn, true);
  107. if (ret)
  108. return log_msg_ret("scn", ret);
  109. }
  110. return 0;
  111. }
  112. void expo_set_text_mode(struct expo *exp, bool text_mode)
  113. {
  114. exp->text_mode = text_mode;
  115. }
  116. struct scene *expo_lookup_scene_id(struct expo *exp, uint scene_id)
  117. {
  118. struct scene *scn;
  119. list_for_each_entry(scn, &exp->scene_head, sibling) {
  120. if (scn->id == scene_id)
  121. return scn;
  122. }
  123. return NULL;
  124. }
  125. int expo_set_scene_id(struct expo *exp, uint scene_id)
  126. {
  127. struct scene *scn;
  128. int ret;
  129. scn = expo_lookup_scene_id(exp, scene_id);
  130. if (!scn)
  131. return log_msg_ret("id", -ENOENT);
  132. ret = scene_arrange(scn);
  133. if (ret)
  134. return log_msg_ret("arr", ret);
  135. exp->scene_id = scene_id;
  136. return 0;
  137. }
  138. int expo_first_scene_id(struct expo *exp)
  139. {
  140. struct scene *scn;
  141. if (list_empty(&exp->scene_head))
  142. return -ENOENT;
  143. scn = list_first_entry(&exp->scene_head, struct scene, sibling);
  144. return scn->id;
  145. }
  146. int expo_render(struct expo *exp)
  147. {
  148. struct udevice *dev = exp->display;
  149. struct video_priv *vid_priv = dev_get_uclass_priv(dev);
  150. struct scene *scn = NULL;
  151. u32 colour;
  152. int ret;
  153. colour = video_index_to_colour(vid_priv, VID_WHITE);
  154. ret = video_fill(dev, colour);
  155. if (ret)
  156. return log_msg_ret("fill", ret);
  157. if (exp->scene_id) {
  158. scn = expo_lookup_scene_id(exp, exp->scene_id);
  159. if (!scn)
  160. return log_msg_ret("scn", -ENOENT);
  161. ret = scene_render(scn);
  162. if (ret)
  163. return log_msg_ret("ren", ret);
  164. }
  165. video_sync(dev, true);
  166. return scn ? 0 : -ECHILD;
  167. }
  168. int expo_send_key(struct expo *exp, int key)
  169. {
  170. struct scene *scn = NULL;
  171. if (exp->scene_id) {
  172. int ret;
  173. scn = expo_lookup_scene_id(exp, exp->scene_id);
  174. if (!scn)
  175. return log_msg_ret("scn", -ENOENT);
  176. ret = scene_send_key(scn, key, &exp->action);
  177. if (ret)
  178. return log_msg_ret("key", ret);
  179. /* arrange it to get any changes */
  180. ret = scene_arrange(scn);
  181. if (ret)
  182. return log_msg_ret("arr", ret);
  183. }
  184. return scn ? 0 : -ECHILD;
  185. }
  186. int expo_action_get(struct expo *exp, struct expo_action *act)
  187. {
  188. *act = exp->action;
  189. exp->action.type = EXPOACT_NONE;
  190. return act->type == EXPOACT_NONE ? -EAGAIN : 0;
  191. }
  192. int expo_apply_theme(struct expo *exp, ofnode node)
  193. {
  194. struct scene *scn;
  195. struct expo_theme *theme = &exp->theme;
  196. int ret;
  197. log_debug("Applying theme %s\n", ofnode_get_name(node));
  198. memset(theme, '\0', sizeof(struct expo_theme));
  199. ofnode_read_u32(node, "font-size", &theme->font_size);
  200. ofnode_read_u32(node, "menu-inset", &theme->menu_inset);
  201. ofnode_read_u32(node, "menuitem-gap-y", &theme->menuitem_gap_y);
  202. list_for_each_entry(scn, &exp->scene_head, sibling) {
  203. ret = scene_apply_theme(scn, theme);
  204. if (ret)
  205. return log_msg_ret("app", ret);
  206. }
  207. return 0;
  208. }