editor/menu.c

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#include "editor.h"

//{{{
typedef struct menu_entry
{
    const char *str;
    const char *hotkey;
    void (*func)(void);
} menu_entry;
//}}}
//{{{
typedef struct menu_info
{
    const char *str;
    int xpos, highlight_width, width;
    int num_entries;
    menu_entry *entries;
} menu_info;
//}}}

#define ICON_CTRL  "\x7F"
#define ICON_SHIFT "\x1B"

//{{{
menu_entry file_menu[] = {
    { "New",          ICON_SHIFT "N", file_new },
    { "Open",         ICON_SHIFT "O", file_open },
    { "Save",         ICON_SHIFT "S", file_save },
    { "Save as",      "", file_save_as },
    { "Exit",         "ESC", file_exit}
    };
//}}}
//{{{
menu_entry edit_menu[] = {
    { "Cut",          ICON_SHIFT "X", edit_cut },
    { "Copy",         ICON_SHIFT "Y", edit_copy },
    { "Paste",        "=", edit_paste },
    { "Clear",        "",  edit_clear },
    { "Select all",   ICON_SHIFT "A", edit_select_all }
    };
//}}}
//{{{
menu_entry transform_menu[] = {
    { "Flip horizontal", ICON_SHIFT "H", transform_mirror_horizontal },
    { "Flip vertical",   ICON_SHIFT "V", transform_mirror_vertical },
    { "Rotate 180deg",   ICON_SHIFT "R", transform_rotate_180 },
    { "Cut corners",     ICON_SHIFT "C", transform_smooth }
    };
//}}}
//{{{
menu_entry map_menu[] = {
    { "Properties",   "MODE",           map_properties   },
    { "Resize",       "",               map_resize       },
    { "Next map",     "+",              map_next         },
    { "Previous map", "-",              map_previous     },
    { "Insert map",   "",               map_insert       },
    { "Delete",       "",               map_delete       },
    { "Move up",      ICON_CTRL "\x17", map_move_up      },
    { "Move down",    ICON_CTRL "\x18", map_move_down    },
    { "Import",       "",               map_import_level }
    };
//}}}

#define NUM_MENUS 4
//{{{
menu_info menus[NUM_MENUS] = {
    { "File",      11, 17, 45, 5, file_menu },
    { "Edit",      28, 17, 55, 5, edit_menu },
    { "Transform", 45, 39, 70, 4, transform_menu },
    { "Map",       84, 17, 65, 9, map_menu }
    };
//}}}

int open_menu = 0;
int menu_pos = 0;

//{{{
void enter_menu_state(int menu)
{
    input_state = menu_state;
    open_menu = menu;
    menu_pos = 0;
    draw_menu_labels();
    menu_toggle_highlight(menu);
    draw_open_menu();
}
//}}}
//{{{
void draw_menu_labels(void)
{
    int ii;
    for(ii=0; ii<NUM_MENUS; ii++)
        draw_string(menus[ii].str, menus[ii].xpos+1, 2);
}
//}}}
//{{{
void undraw_open_menus(void)
{
    draw_map_field();
}
//}}}
//{{{
void draw_open_menu(void)
{
    int ii;
    int xpos = menus[open_menu].xpos;
    const char *str;
    menu_info *menu = &menus[open_menu];
    draw_rect(xpos, 9, menu->width+2,
              menu->num_entries*7+2);
    for(ii=0; ii<menu->num_entries; ii++)
    {
        // Option
        draw_string(menu->entries[ii].str, xpos+2, 11+7*ii);
        // Hotkey (right-aligned)
        str = menu->entries[ii].hotkey;
        draw_string(str, xpos+menu->width-1-DrawStrWidth(str, F_4x6), 11+7*ii);
    }
    xor_rect(xpos+1, 10+menu_pos*7, menus[open_menu].width, 7);
}
//}}}
//{{{
void menu_toggle_highlight(int menu)
{
    xor_rect(menus[menu].xpos, 0, menus[menu].highlight_width, 9);
}
//}}}

//{{{
void switch_menu(int menu)
{
    menu_toggle_highlight(open_menu);
    undraw_open_menus();
    open_menu = menu;
    menu_toggle_highlight(open_menu);
    menu_pos = 0;
    draw_open_menu();
}
//}}}
//{{{
void menu_state(int key)
{
    if(key == KEY_RIGHT) {
        switch_menu((open_menu+1)%NUM_MENUS);
    } else if(key == KEY_LEFT) {
        if(open_menu==0) switch_menu(NUM_MENUS-1);
        else             switch_menu(open_menu-1);
    } else if(key == KEY_DOWN) {
        menu_pos = (menu_pos+1) % menus[open_menu].num_entries;
        draw_open_menu();
    } else if(key == KEY_UP) {
        if(menu_pos==0) menu_pos = menus[open_menu].num_entries - 1;
        else menu_pos--;
        draw_open_menu();
    } else if(key == KEY_ENTER) {
        undraw_open_menus();
        menus[open_menu].entries[menu_pos].func();
        if(input_state == menu_state) // If the menu didn't change state
            enter_edit_state();
    }
    else if(key == KEY_ESC) enter_edit_state();
    else if(key == KEY_F1) enter_palette_state();
    else if(key == KEY_F2) switch_menu(0);
    else if(key == KEY_F3) switch_menu(1);
    else if(key == KEY_F4) switch_menu(2);
    else if(key == KEY_F5) switch_menu(3);
}
//}}}

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