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(GLUI) Keep menu->begin up to date for faster list traversal

This commit is contained in:
Higor Eurípedes 2015-06-15 18:21:08 -03:00
parent a0af98ded7
commit fd705e72d3
1 changed files with 27 additions and 3 deletions
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28
menu/drivers/glui.c
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@ -302,7 +302,7 @@ static void glui_render_menu_list(glui_handle_t *glui,
glui->list_block.carr.coords.vertices = 0; glui->list_block.carr.coords.vertices = 0;
for (i = 0; i < end; i++) for (i = menu->begin; i < end; i++)
{ {
bool entry_selected; bool entry_selected;
char entry_path[PATH_MAX_LENGTH]; char entry_path[PATH_MAX_LENGTH];
@ -649,11 +649,35 @@ static void glui_navigation_set(bool scroll)
{ {
menu_display_t *disp = menu_display_get_ptr(); menu_display_t *disp = menu_display_get_ptr();
menu_handle_t *menu = menu_driver_get_ptr(); menu_handle_t *menu = menu_driver_get_ptr();
float scroll_pos = 0;
if (!menu || !disp || !scroll) if (!menu || !disp || !scroll)
return; return;
menu_animation_push(disp->animation, 10, glui_get_scroll(), scroll_pos = glui_get_scroll();
if (menu->userdata)
{
unsigned height = 0, num_lines = 0, end = 0;
glui_handle_t *glui = (glui_handle_t*)menu->userdata;
menu_navigation_t *nav = menu_navigation_get_ptr();
video_driver_get_size(NULL, &height);
num_lines = height / glui->line_height;
end = menu_entries_get_end();
if (nav->selection_ptr < num_lines / 2 || end <= num_lines)
menu->begin = 0;
else if (nav->selection_ptr < (end - num_lines / 2))
menu->begin = nav->selection_ptr - num_lines / 2;
else
menu->begin = end - num_lines;
if (menu->begin > 5)
menu->begin -= 5;
}
menu_animation_push(disp->animation, 10, scroll_pos,
&menu->scroll_y, EASING_IN_OUT_QUAD, NULL); &menu->scroll_y, EASING_IN_OUT_QUAD, NULL);
} }