enum {
MENU_ARROW_UP,
- MENU_ARROW_DOWN
+ MENU_ARROW_DOWN,
+
+ MENU_SCROLL_TICKS = 25
};
static badge_sprite const arrows[] = {
};
enum {
- MENU_MARGIN_TOP = 2,
- MENU_MARGIN_BOTTOM = 3,
+ MENU_MARGIN_TOP = 3,
+ MENU_MARGIN_BOTTOM = 2,
MENU_MARGIN_LEFT = 3,
MENU_ENTRIES_HEIGHT = 1 + BADGE_FONT_HEIGHT,
MENU_ENTRIES_VISIBLE = (BADGE_DISPLAY_HEIGHT - MENU_MARGIN_TOP - MENU_MARGIN_BOTTOM) / MENU_ENTRIES_HEIGHT
};
static void badge_menu_show(char const *const *menu,
- size_t n,
- size_t first_visible,
- size_t selected)
+ uint8_t n,
+ uint8_t *first_visible,
+ uint8_t selected,
+ char selector)
{
badge_framebuffer fb = { { { 0 } } };
bool arrow_up = true;
bool arrow_down = true;
- size_t first_used_row = 0;
- size_t used_rows = MENU_ENTRIES_VISIBLE;
+ uint8_t first_used_row = 0;
+ uint8_t used_rows = MENU_ENTRIES_VISIBLE;
+
+ if(selected >= n) {
+ selected = n - 1;
+ }
if(n <= MENU_ENTRIES_VISIBLE) {
- first_visible = 0;
+ *first_visible = 0;
used_rows = n;
first_used_row = (MENU_ENTRIES_VISIBLE - used_rows) / 2;
+ } else if(*first_visible + MENU_ENTRIES_VISIBLE > n) {
+ *first_visible = n - MENU_ENTRIES_VISIBLE;
+ } else if(selected + 1 == n) {
+ *first_visible = n - MENU_ENTRIES_VISIBLE;
+ } else if(selected <= *first_visible) {
+ *first_visible = selected == 0 ? 0 : selected - 1;
+ } else if(selected - *first_visible + 2 > MENU_ENTRIES_VISIBLE) {
+ *first_visible = selected - MENU_ENTRIES_VISIBLE + 2;
}
- if(first_visible == 0) {
+ if(*first_visible == 0) {
arrow_up = false;
}
- if(first_visible + MENU_ENTRIES_VISIBLE >= n) {
+ if(*first_visible + MENU_ENTRIES_VISIBLE >= n) {
arrow_down = false;
}
- for(size_t i = 0; i < used_rows; ++i) {
+ for(uint8_t i = 0; i < used_rows; ++i) {
badge_framebuffer_render_text(&fb,
(int8_t) (MENU_MARGIN_LEFT + BADGE_FONT_WIDTH),
(int8_t) (MENU_MARGIN_TOP + (first_used_row + i) * MENU_ENTRIES_HEIGHT),
- menu[first_visible + i]);
+ menu[*first_visible + i]);
}
- badge_framebuffer_render_char(&fb, MENU_MARGIN_LEFT, MENU_MARGIN_TOP + MENU_ENTRIES_HEIGHT * (selected - first_visible + first_used_row), '*');
+ badge_framebuffer_render_char(&fb, MENU_MARGIN_LEFT, MENU_MARGIN_TOP + MENU_ENTRIES_HEIGHT * (selected - *first_visible + first_used_row), selector);
if(arrow_up ) { badge_framebuffer_blt(&fb, MENU_MARGIN_LEFT, MENU_MARGIN_TOP, &arrows[MENU_ARROW_UP ], 0); }
if(arrow_down) { badge_framebuffer_blt(&fb, MENU_MARGIN_LEFT, MENU_MARGIN_TOP + (MENU_ENTRIES_VISIBLE - 1) * MENU_ENTRIES_HEIGHT, &arrows[MENU_ARROW_DOWN], 0); }
badge_framebuffer_flush(&fb);
}
-size_t badge_menu(char const *const *menu,
- size_t n,
- size_t *first_visible,
- size_t selected)
+uint8_t badge_menu(char const *const *menu,
+ uint8_t n,
+ uint8_t *first_visible,
+ uint8_t selected)
{
+ unsigned scroll_ticks = 0;
+ int scroll_direction = 0;
+
for(;;) {
- if(n <= MENU_ENTRIES_VISIBLE) {
- *first_visible = 0;
- } else if(selected + 1 == n) {
- *first_visible = n - MENU_ENTRIES_VISIBLE;
- } else if(selected <= *first_visible) {
- *first_visible = selected == 0 ? 0 : selected - 1;
- } else if(selected - *first_visible + 2 > MENU_ENTRIES_VISIBLE) {
- *first_visible = selected - MENU_ENTRIES_VISIBLE + 2;
- }
+ if(scroll_ticks == 0) {
+ if (scroll_direction == 1 && selected + 1 < n) {
+ ++selected;
+ } else if(scroll_direction == -1 && selected != 0) {
+ --selected;
+ }
- badge_menu_show(menu, n, *first_visible, selected);
+ badge_menu_show(menu, n, first_visible, selected, '*');
+
+ scroll_ticks = MENU_SCROLL_TICKS;
+ }
badge_event_t ev;
- do {
- ev = badge_event_wait();
- } while(badge_event_type(ev) != BADGE_EVENT_USER_INPUT);
+ ev = badge_event_wait();
+ switch(badge_event_type(ev)) {
+ case BADGE_EVENT_USER_INPUT:
+ {
+ uint8_t old_state = badge_event_old_input_state(ev);
+ uint8_t new_state = badge_event_new_input_state(ev);
+ uint8_t new_buttons = new_state & (old_state ^ new_state);
+
+ if(new_buttons & (BADGE_EVENT_KEY_BTN_A | BADGE_EVENT_KEY_BTN_B)) {
+ return selected;
+ } else if((new_buttons & BADGE_EVENT_KEY_UP )) {
+ scroll_direction = -1;
+ } else if((new_buttons & BADGE_EVENT_KEY_DOWN)) {
+ scroll_direction = 1;
+ } else {
+ scroll_direction = 0;
+ }
+
+ scroll_ticks = 0;
+ break;
+ }
+ case BADGE_EVENT_GAME_TICK:
+ {
+ --scroll_ticks;
+ break;
+ }
+ }
+ }
+}
+
+void badge_scroll_text(char const *const *lines, uint8_t n) {
+ uint8_t first_visible = 0;
+ int scroll_direction = 0;
+ unsigned scroll_ticks = 0;
+
+ for(;;) {
+ if(scroll_ticks == 0) {
+ if (scroll_direction == 1 && first_visible + MENU_ENTRIES_VISIBLE < n) {
+ ++first_visible;
+ } else if(scroll_direction == -1 && first_visible != 0) {
+ --first_visible;
+ }
+
+ badge_menu_show(lines, n, &first_visible, first_visible + (first_visible + 1 == n ? 0 : 1), ' ');
- uint8_t old_state = badge_event_old_input_state(ev);
- uint8_t new_state = badge_event_new_input_state(ev);
- uint8_t new_buttons = new_state & (old_state ^ new_state);
+ scroll_ticks = MENU_SCROLL_TICKS;
+ }
+
+ badge_event_t ev;
- if(new_buttons & (BADGE_EVENT_KEY_BTN_A | BADGE_EVENT_KEY_BTN_B)) {
- return selected;
- } else if((new_buttons & BADGE_EVENT_KEY_UP ) && selected != 0) {
- --selected;
- } else if(new_buttons & BADGE_EVENT_KEY_DOWN && selected + 1 < n) {
- ++selected;
+ ev = badge_event_wait();
+ switch(badge_event_type(ev)) {
+ case BADGE_EVENT_USER_INPUT:
+ {
+ uint8_t old_state = badge_event_old_input_state(ev);
+ uint8_t new_state = badge_event_new_input_state(ev);
+ uint8_t new_buttons = new_state & (old_state ^ new_state);
+
+ if(new_buttons & (BADGE_EVENT_KEY_BTN_A | BADGE_EVENT_KEY_BTN_B)) {
+ return;
+ } else if((new_buttons & BADGE_EVENT_KEY_UP )) {
+ scroll_direction = -1;
+ } else if((new_buttons & BADGE_EVENT_KEY_DOWN)) {
+ scroll_direction = 1;
+ } else {
+ scroll_direction = 0;
+ }
+
+ scroll_ticks = 0;
+ break;
+ }
+ case BADGE_EVENT_GAME_TICK:
+ {
+ --scroll_ticks;
+ break;
+ }
}
}
}
projects / hackover2013-badge-firmware.git / blobdiff