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(GLUI) Fix a bug when going backward on a long list

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This commit is contained in:
Jean-André Santoni 2015-04-21 11:43:52 +07:00
parent 8ef70debcb
commit 5e96ea7727
1 changed files with 49 additions and 37 deletions
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86
menu/drivers/glui.c
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@ -679,6 +679,42 @@ static bool glui_load_wallpaper(void *data)
return true;
}
static float glui_get_scroll()
{
glui_handle_t *glui = NULL;
menu_handle_t *menu = menu_driver_get_ptr();
gl_t *gl = (gl_t*)video_driver_get_ptr(NULL);
float sy = 0;
if (!menu)
return 0;
glui = (glui_handle_t*)menu->userdata;
if (!glui)
return 0;
int half = (gl->win_height / glui->line_height) / 2;
if (menu->navigation.selection_ptr < half)
return 0;
else
return ((menu->navigation.selection_ptr + 2 - half) * glui->line_height);
}
static void glui_navigation_set(bool scroll)
{
menu_handle_t *menu = menu_driver_get_ptr();
if (!menu)
return;
if (!scroll)
return;
menu_animation_push(menu->animation, 10, glui_get_scroll(),
&menu->scroll_y, EASING_IN_OUT_QUAD, NULL);
}
static void glui_navigation_clear(bool pending_push)
{
menu_handle_t *menu = menu_driver_get_ptr();
@ -689,53 +725,29 @@ static void glui_navigation_clear(bool pending_push)
menu->scroll_y = 0;
}
static void glui_navigation_set(bool scroll)
{
glui_handle_t *glui = NULL;
menu_handle_t *menu = menu_driver_get_ptr();
gl_t *gl = (gl_t*)video_driver_get_ptr(NULL);
float sy = 0;
if (!menu)
return;
glui = (glui_handle_t*)menu->userdata;
if (!glui)
return;
if (!scroll)
return;
int half = (gl->win_height / glui->line_height) / 2;
if (menu->navigation.selection_ptr < half)
sy = 0;
else
sy = ((menu->navigation.selection_ptr + 2 - half) * glui->line_height);
menu_animation_push(menu->animation, 10, sy,
&menu->scroll_y, EASING_IN_OUT_QUAD, NULL);
}
static void glui_navigation_set_last(void)
{
menu_handle_t *menu = menu_driver_get_ptr();
if (menu)
glui_navigation_set(true);
glui_navigation_set(true);
}
static void glui_navigation_descend_alphabet(size_t *unused)
{
menu_handle_t *menu = menu_driver_get_ptr();
if (menu)
glui_navigation_set(true);
glui_navigation_set(true);
}
static void glui_navigation_ascend_alphabet(size_t *unused)
{
glui_navigation_set(true);
}
static void glui_populate_entries(const char *path,
const char *label, unsigned i)
{
menu_handle_t *menu = menu_driver_get_ptr();
if (menu)
glui_navigation_set(true);
if (!menu)
return;
menu->scroll_y = glui_get_scroll();
}
menu_ctx_driver_t menu_ctx_glui = {
@ -747,7 +759,7 @@ menu_ctx_driver_t menu_ctx_glui = {
glui_free,
NULL,
glui_context_destroy,
NULL,
glui_populate_entries,
NULL,
glui_navigation_clear,
NULL,