107 lines
2.3 KiB
C
107 lines
2.3 KiB
C
#include <gint/defs/util.h>
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#include <gint/hardware.h>
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#include <gintctl/menu.h>
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#include <gintctl/util.h>
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/* menu_init(): Initialize a menu list */
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void menu_init(struct menu *menu, int top, int bottom)
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{
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menu->len = 0;
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for(int i = 0; menu->entries[i].name; i++)
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{
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int f = menu->entries[i].flags;
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if(isSH3() && (f & MENU_SH4_ONLY)) continue;
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if(isSH4() && (f & MENU_SH3_ONLY)) continue;
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menu->entries[menu->len++] = menu->entries[i];
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}
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menu->offset = 0;
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menu->pos = 0;
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menu->top = top + 1;
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menu->bottom = row_count() - bottom + 1;
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}
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/* menu_move(): Move the cursor in a menu */
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void menu_move(struct menu *menu, int key, int quick, int wrap)
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{
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int visible = menu->bottom - menu->top;
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int max_offset = max(menu->len - visible, 0);
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/* Quick moves */
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if(key == KEY_UP && quick)
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{
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menu->pos = 0;
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menu->offset = 0;
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}
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else if(key == KEY_DOWN && quick)
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{
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menu->pos = menu->len - 1;
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menu->offset = max_offset;
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}
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/* Normal move up and wrapping move up */
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else if(key == KEY_UP && menu->pos > 0)
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{
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menu->pos--;
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menu->offset = min(menu->offset, menu->pos);
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}
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else if(key == KEY_UP && !menu->pos && wrap)
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{
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menu->pos = menu->len - 1;
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menu->offset = max_offset;
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}
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/* Normal move down and wrapping move down */
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else if(key == KEY_DOWN && menu->pos + 1 < menu->len)
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{
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menu->pos++;
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if(menu->pos > menu->offset + visible - 1
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&& menu->offset + 1 <= max_offset)
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{
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menu->offset++;
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}
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}
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else if(key == KEY_DOWN && menu->pos + 1 == menu->len && wrap)
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{
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menu->pos = 0;
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menu->offset = 0;
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}
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}
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/* menu_show(): Render a list menu */
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void menu_show(struct menu const *menu)
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{
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struct menuentry const *items = menu->entries;
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int offset = menu->offset, pos = menu->pos;
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/* Min and max writable rows */
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int top = menu->top, bottom = menu->bottom;
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int i = 0, j = top;
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/* On fx9860g, only show the title if row is left for it */
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if(_(top > 0, 1)) row_title(menu->name);
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while(j < bottom && items[offset+i].name)
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{
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row_print(j, 2, items[offset+i].name);
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i++, j++;
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}
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if(menu->len > bottom - top)
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{
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scrollbar(offset, menu->len, top, bottom);
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}
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int selected = top + (pos - offset);
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if(selected >= top && selected < bottom) row_highlight(selected);
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}
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/* menu_exec(): Execute the currently-selected function of a menu */
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void menu_exec(struct menu const *menu)
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{
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void (*fun)(void) = menu->entries[menu->pos].function;
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if(fun) fun();
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}
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