static void move_hscrollbar(Ewl_Scrollpane *s, double direction)
{
double rel, abs;
get_horizontal_pan_inc(&rel, &abs);
rel *= direction;
ewl_scrollpane_hscrollbar_value_set(s,
scroll_pos_add(ewl_scrollpane_hscrollbar_value_get(s), rel));
update_statusbar();
}
void update_statusbar()
{
static char statlabel1str[100];
sprintf(statlabel1str,"MadPDF (OK for Menu)");
ewl_label_text_set(EWL_LABEL(statlabel1),statlabel1str);
int curpage,totalpage;
curpage=ewl_pdf_page_get(EWL_PDF(pdfwidget))+1;
totalpage=epdf_document_page_count_get(ewl_pdf_pdf_document_get(EWL_PDF(pdfwidget)));
static char statlabel2str[100];
sprintf(statlabel2str,"pg: %d/%d zoom: %d%% ",curpage,totalpage,(int)round(curscale*100.0));
double hpos,vpos;
int leftarr=0,rightarr=0,downarr=0,uparr=0;
if(CURRENT_W(trimpane)>CURRENT_W(scrollpane))
{
hpos=ewl_scrollpane_hscrollbar_value_get(EWL_SCROLLPANE(scrollpane));
if(hpos>0.0)
{
leftarr=1;
}
if(hpos<1.0)
{
rightarr=1;
}
}
if(CURRENT_H(trimpane)>CURRENT_H(scrollpane))
{
vpos=ewl_scrollpane_vscrollbar_value_get(EWL_SCROLLPANE(scrollpane));
if(vpos>0.0)
{
uparr=1;
}
if(vpos<1.0)
{
downarr=1;
}
}
if(leftarr||rightarr||downarr||uparr)
strcat(statlabel2str,"pan: ");
else
strcat(statlabel2str,"pan: none");
if(leftarr)
strcat(statlabel2str,"←");
if(rightarr)
strcat(statlabel2str,"→");
if(downarr)
strcat(statlabel2str,"↓");
if(uparr)
strcat(statlabel2str,"↑");
ewl_label_text_set(EWL_LABEL(statlabel2),statlabel2str);
}
/* Swap scrollbar values after an orientation change.
* direction == -1 -> turn clockwise, 1 -> counter-clockwise. */
static void turn_scrollbars(Ewl_Scrollpane *s, int direction)
{
double h = from_scroll_position(ewl_scrollpane_hscrollbar_value_get(s));
double v = from_scroll_position(ewl_scrollpane_vscrollbar_value_get(s));
double new_h = v * direction;
double new_v = -h * direction;
ewl_scrollpane_hscrollbar_value_set(s, to_scroll_position(new_h));
ewl_scrollpane_vscrollbar_value_set(s, to_scroll_position(new_v));
update_statusbar();
}
static void move_hscrollbar(Ewl_Scrollpane *s, double amount)
{
ewl_scrollpane_hscrollbar_value_set(s,
clamp(0.0, ewl_scrollpane_hscrollbar_value_get(s) + amount, 1.0));
update_statusbar();
}