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(GLUI) Fixes graphical glitch that could occur if scrollbar_height

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became negative
This commit is contained in:
twinaphex 2015-10-28 06:05:05 +01:00
parent c5c816d708
commit 67e5262ef8
1 changed files with 6 additions and 4 deletions
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10
menu/drivers/glui.c
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@ -222,7 +222,7 @@ static void glui_render_quad(gl_t *gl, int x, int y, int w, int h,
static void glui_draw_scrollbar(gl_t *gl, unsigned width, unsigned height, GRfloat *coord_color) static void glui_draw_scrollbar(gl_t *gl, unsigned width, unsigned height, GRfloat *coord_color)
{ {
unsigned header_height; unsigned header_height;
float content_height, total_height, scrollbar_height, y; float content_height, total_height, scrollbar_width, scrollbar_height, y;
glui_handle_t *glui = NULL; glui_handle_t *glui = NULL;
menu_handle_t *menu = menu_driver_get_ptr(); menu_handle_t *menu = menu_driver_get_ptr();
@ -234,18 +234,20 @@ static void glui_draw_scrollbar(gl_t *gl, unsigned width, unsigned height, GRflo
glui = (glui_handle_t*)menu->userdata; glui = (glui_handle_t*)menu->userdata;
content_height = menu_entries_get_end() * glui->line_height; content_height = menu_entries_get_end() * glui->line_height;
total_height = height - header_height; total_height = height - header_height;
scrollbar_height = total_height / (content_height / total_height); scrollbar_height = total_height / (content_height / total_height) - (header_height / 6);
y = total_height * menu->scroll_y / content_height; y = total_height * menu->scroll_y / content_height;
if (content_height >= total_height) if (content_height >= total_height)
{ {
int scrollbar_width = (header_height / 12); scrollbar_width = (header_height / 12);
if (scrollbar_height <= header_height / 12)
scrollbar_height = header_height / 12;
glui_render_quad(gl, glui_render_quad(gl,
width - scrollbar_width - (header_height / 12), width - scrollbar_width - (header_height / 12),
header_height + y + (header_height / 12), header_height + y + (header_height / 12),
scrollbar_width, scrollbar_width,
scrollbar_height - (header_height / 6), scrollbar_height,
width, height, width, height,
coord_color); coord_color);
} }