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- /*
- * BURG - Brand-new Universal loadeR from GRUB
- * Copyright 2009 Bean Lee - All Rights Reserved
- *
- * BURG is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * BURG is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with BURG. If not, see <http://www.gnu.org/licenses/>.
- */
- #include <grub/mm.h>
- #include <grub/misc.h>
- #include <grub/tree.h>
- #include <grub/menu_region.h>
- GRUB_EXPORT(grub_menu_region_class);
- GRUB_EXPORT(grub_menu_region_create_text);
- GRUB_EXPORT(grub_menu_region_create_rect);
- GRUB_EXPORT(grub_menu_region_create_bitmap);
- GRUB_EXPORT(grub_menu_region_scale);
- GRUB_EXPORT(grub_menu_region_free);
- GRUB_EXPORT(grub_menu_region_check_rect);
- GRUB_EXPORT(grub_menu_region_add_update);
- GRUB_EXPORT(grub_menu_region_apply_update);
- GRUB_EXPORT(grub_menu_region_text_term);
- grub_term_output_t grub_menu_region_text_term;
- grub_bitmap_cache_t cache_head;
- struct grub_handler_class grub_menu_region_class =
- {
- .name = "menu_region"
- };
- #define grub_cur_menu_region grub_menu_region_get_current ()
- grub_menu_region_text_t
- grub_menu_region_create_text (grub_font_t font, grub_uint32_t color,
- const char *str)
- {
- grub_menu_region_text_t region;
- if (! str)
- str = "";
- region = grub_zalloc (sizeof (*region) + grub_strlen (str) + 1);
- if (! region)
- return 0;
- region->common.type = GRUB_MENU_REGION_TYPE_TEXT;
- region->common.width = grub_menu_region_get_text_width (font, str, 0, 0);
- region->common.height = grub_menu_region_get_text_height (font);
- region->font = font;
- region->color = color;
- grub_strcpy (region->text, str);
- return region;
- }
- grub_menu_region_rect_t
- grub_menu_region_create_rect (int width, int height, grub_video_color_t color,
- grub_uint32_t fill)
- {
- grub_menu_region_rect_t region;
- region = grub_zalloc (sizeof (*region));
- if (! region)
- return 0;
- region->common.type = GRUB_MENU_REGION_TYPE_RECT;
- region->common.width = width;
- region->common.height = height;
- region->color = color;
- region->fill = fill;
- return region;
- }
- grub_menu_region_bitmap_t
- grub_menu_region_create_bitmap (const char *name, int scale,
- grub_video_color_t color)
- {
- grub_menu_region_bitmap_t region = 0;
- struct grub_video_bitmap *bitmap;
- grub_bitmap_cache_t cache = 0;
- if (! grub_cur_menu_region->get_bitmap)
- return 0;
- region = grub_zalloc (sizeof (*region));
- if (! region)
- return 0;
- cache = grub_named_list_find (GRUB_AS_NAMED_LIST (cache_head), name);
- if (cache)
- bitmap = cache->bitmap;
- else
- {
- cache = grub_zalloc (sizeof (*cache));
- if (! cache)
- goto quit;
- bitmap = grub_cur_menu_region->get_bitmap (name);
- if (! bitmap)
- goto quit;
- cache->bitmap = bitmap;
- cache->name = grub_strdup (name);
- grub_list_push (GRUB_AS_LIST_P (&cache_head), GRUB_AS_LIST (cache));
- }
- cache->count++;
- region->common.type = GRUB_MENU_REGION_TYPE_BITMAP;
- region->common.width = bitmap->mode_info.width;
- region->common.height = bitmap->mode_info.height;
- region->bitmap = bitmap;
- region->cache = cache;
- region->scale = scale;
- region->color = color;
- return region;
- quit:
- grub_free (region);
- grub_free (cache);
- return 0;
- }
- void
- grub_menu_region_scale (grub_menu_region_common_t region, int width,
- int height)
- {
- if ((! region) || ((width == region->width) && (height == region->height)))
- return;
- region->width = width;
- region->height = height;
- if ((region->type == GRUB_MENU_REGION_TYPE_BITMAP) &&
- (grub_cur_menu_region->scale_bitmap))
- {
- grub_menu_region_bitmap_t b;
- b = (grub_menu_region_bitmap_t) region;
- if ((b->cache->scaled_bitmap) &&
- (width == (int) b->cache->scaled_bitmap->mode_info.width) &&
- (height == (int) b->cache->scaled_bitmap->mode_info.height))
- {
- b->bitmap = b->cache->scaled_bitmap;
- }
- else
- {
- grub_cur_menu_region->scale_bitmap (b);
- if (! b->cache->scaled_bitmap)
- b->cache->scaled_bitmap = b->bitmap;
- }
- }
- }
- static void
- grub_bitmap_cache_free (grub_bitmap_cache_t cache)
- {
- cache->count--;
- if (cache->count == 0)
- {
- grub_list_remove (GRUB_AS_LIST_P (&cache_head), GRUB_AS_LIST (cache));
- grub_cur_menu_region->free_bitmap (cache->bitmap);
- grub_cur_menu_region->free_bitmap (cache->scaled_bitmap);
- grub_free ((char *) cache->name);
- grub_free (cache);
- }
- }
- void
- grub_menu_region_free (grub_menu_region_common_t region)
- {
- if (! region)
- return;
- if ((region->type == GRUB_MENU_REGION_TYPE_BITMAP) &&
- (grub_cur_menu_region->free_bitmap))
- {
- grub_menu_region_bitmap_t r = (grub_menu_region_bitmap_t) region;
- if (r->cache)
- {
- if ((r->bitmap != r->cache->bitmap) &&
- (r->bitmap != r->cache->scaled_bitmap))
- grub_cur_menu_region->free_bitmap (r->bitmap);
- grub_bitmap_cache_free (r->cache);
- }
- else
- grub_cur_menu_region->free_bitmap (r->bitmap);
- }
- grub_free (region);
- }
- grub_menu_region_bitmap_t
- grub_menu_region_new_bitmap (int width, int height)
- {
- grub_menu_region_bitmap_t region = 0;
- struct grub_video_bitmap *bm;
-
- if (! grub_menu_region_get_current ()->new_bitmap)
- return 0;
- region = grub_zalloc (sizeof (*region));
- if (! region)
- return 0;
- bm = grub_menu_region_get_current ()->new_bitmap (width, height);
- if (! bm)
- {
- grub_free (region);
- return 0;
- }
- region->common.type = GRUB_MENU_REGION_TYPE_BITMAP;
- region->common.width = width;
- region->common.height = height;
- region->bitmap = bm;
- return region;
- }
- int
- grub_menu_region_check_rect (int *x1, int *y1, int *w1, int *h1,
- int x2, int y2, int w2, int h2)
- {
- *w1 += *x1;
- *h1 += *y1;
- w2 += x2;
- h2 += y2;
- if (*x1 < x2)
- *x1 = x2;
- if (*y1 < y2)
- *y1 = y2;
- if (*w1 > w2)
- *w1 = w2;
- if (*h1 > h2)
- *h1 = h2;
- if ((*w1 <= *x1) || (*h1 <= *y1))
- return 0;
- *w1 -= *x1;
- *h1 -= *y1;
- return 1;
- }
- void
- grub_menu_region_add_update (grub_menu_region_update_list_t *head,
- grub_menu_region_common_t region,
- int org_x, int org_y, int x, int y,
- int width, int height)
- {
- grub_menu_region_update_list_t u;
- if (! region)
- return;
- org_x += region->ofs_x;
- org_y += region->ofs_y;
- x -= region->ofs_x;
- y -= region->ofs_y;
- if (! grub_menu_region_check_rect (&x, &y, &width, &height,
- 0, 0, region->width, region->height))
- return;
- u = grub_malloc (sizeof (*u));
- if (! u)
- return;
- u->region = region;
- u->org_x = org_x;
- u->org_y = org_y;
- u->x = x;
- u->y = y;
- u->width = width;
- u->height = height;
- if ((! grub_menu_region_gfx_mode ()) ||
- ((region->type == GRUB_MENU_REGION_TYPE_RECT) &&
- (! ((grub_menu_region_rect_t) region)->fill)) ||
- ((region->type == GRUB_MENU_REGION_TYPE_BITMAP) &&
- (! ((grub_menu_region_bitmap_t) region)->bitmap->transparent)))
- {
- grub_menu_region_update_list_t *p, q;
- for (p = head, q = *p; q;)
- {
- int x1, y1, w1, h1;
- x1 = org_x + x - q->org_x;
- y1 = org_y + y - q->org_y;
- w1 = width;
- h1 = height;
- if (! grub_menu_region_check_rect (&x1, &y1, &w1, &h1,
- q->x, q->y, q->width, q->height))
- {
- p = &(q->next);
- q = q->next;
- continue;
- }
- if (y1 > q->y)
- {
- grub_menu_region_update_list_t n;
- n = grub_malloc (sizeof (*u));
- if (n)
- {
- n->region = q->region;
- n->org_x = q->org_x;
- n->org_y = q->org_y;
- n->x = q->x;
- n->y = q->y;
- n->width = q->width;
- n->height = y1 - q->y;
- *p = n;
- p = &(n->next);
- }
- }
- if (x1 > q->x)
- {
- grub_menu_region_update_list_t n;
- n = grub_malloc (sizeof (*u));
- if (n)
- {
- n->region = q->region;
- n->org_x = q->org_x;
- n->org_y = q->org_y;
- n->x = q->x;
- n->y = y1;
- n->width = x1 - q->x;
- n->height = h1;
- *p = n;
- p = &(n->next);
- }
- }
- if (x1 + w1 < q->x + q->width)
- {
- grub_menu_region_update_list_t n;
- n = grub_malloc (sizeof (*u));
- if (n)
- {
- n->region = q->region;
- n->org_x = q->org_x;
- n->org_y = q->org_y;
- n->x = x1 + w1;
- n->y = y1;
- n->width = q->x + q->width - n->x;
- n->height = h1;
- *p = n;
- p = &(n->next);
- }
- }
- if (y1 + h1 < q->y + q->height)
- {
- grub_menu_region_update_list_t n;
- n = grub_malloc (sizeof (*u));
- if (n)
- {
- n->region = q->region;
- n->org_x = q->org_x;
- n->org_y = q->org_y;
- n->x = q->x;
- n->y = y1 + h1;
- n->width = q->width;
- n->height = q->y + q->height - n->y;
- *p = n;
- p = &(n->next);
- }
- }
- *p = q->next;
- grub_free (q);
- q = *p;
- }
- }
- u->next = *head;
- *head = u;
- }
- void
- grub_menu_region_apply_update (grub_menu_region_update_list_t head)
- {
- grub_menu_region_update_list_t prev = 0;
- grub_menu_region_hide_cursor ();
- while (head)
- {
- grub_menu_region_update_list_t temp;
- temp = head->next;
- head->next = prev;
- prev = head;
- head = temp;
- }
- head = prev;
- while (head)
- {
- grub_menu_region_update_list_t c;
- grub_menu_region_common_t r;
- int scn_x, scn_y;
- c = head;
- head = head->next;
- r = c->region;
- scn_x = c->org_x + c->x;
- scn_y = c->org_y + c->y;
- #if 0
- grub_printf ("[%d: %d %d %d %d %d %d] ", r->type, c->x, c->y,
- c->width, c->height, scn_x, scn_y);
- #else
- switch (r->type)
- {
- case GRUB_MENU_REGION_TYPE_RECT:
- grub_cur_menu_region->update_rect ((grub_menu_region_rect_t ) r,
- c->x, c->y, c->width, c->height,
- scn_x, scn_y);
- break;
- case GRUB_MENU_REGION_TYPE_TEXT:
- grub_cur_menu_region->update_text ((grub_menu_region_text_t ) r,
- c->x, c->y, c->width, c->height,
- scn_x, scn_y);
- break;
- case GRUB_MENU_REGION_TYPE_BITMAP:
- grub_cur_menu_region->update_bitmap ((grub_menu_region_bitmap_t ) r,
- c->x, c->y, c->width, c->height,
- scn_x, scn_y);
- break;
- }
- #endif
- grub_free (c);
- }
- }
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