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Generic functions to handle scrolling windows created

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This commit is contained in:
Frederic Culot
2008-04-18 17:53:31 +00:00
parent efd782699b
commit f0d4409151
4 changed files with 114 additions and 63 deletions
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78
src/help.c
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@@ -1,4 +1,4 @@
/* $calcurse: help.c,v 1.22 2008/04/12 21:14:03 culot Exp $ */
/* $calcurse: help.c,v 1.23 2008/04/18 17:53:31 culot Exp $ */
/*
* Calcurse - text-based organizer
@@ -256,15 +256,12 @@ wanted_page (int ch)
void
help_screen (void)
{
window_t hwin;
window_t hpad;
scrollwin_t hwin;
const int PADOFFSET = 4;
const int TITLELINES = 3;
int ch = '?';
int text_lines;
int first_line = 0, nl = 0;
int page, oldpage;
int need_resize;
int ch = '?';
int page, oldpage;
help_page_t hscr[HELPSCREENS];
hscr[HELP_MAIN].title =
@@ -560,71 +557,62 @@ help_screen (void)
"Send your feedback or comments to : calcurse@culot.org\n"
"Calcurse home page : http://culot.org/calcurse");
need_resize = 0;
page = oldpage = HELP_MAIN;
help_wins_init (&hwin, &hpad, PADOFFSET);
hwin.win.x = 0;
hwin.win.y = 0;
hwin.win.h = (notify_bar ()) ? row - 3 : row - 2;
hwin.win.w = col;
hwin.pad.x = PADOFFSET;
hwin.pad.y = TITLELINES;
hwin.pad.h = BUFSIZ;
hwin.pad.w = col - 2 * PADOFFSET + 1;
snprintf (hwin.label, BUFSIZ, _("Calcurse %s | help"), VERSION);
wins_scrollwin_init (&hwin);
wins_show (hwin.win.p, hwin.label);
page = oldpage = HELP_MAIN;
need_resize = 0;
/* Display the help screen related to user input. */
while (ch != 'q')
{
erase_window_part (hwin.p, 1, TITLELINES, col - 2, hwin.h - 2);
erase_window_part (hwin.win.p, 1, TITLELINES, col - 2,
hwin.win.h - 2);
switch (ch)
{
case KEY_RESIZE:
help_wins_reset (&hwin, &hpad, PADOFFSET);
first_line = 0;
nl = write_help_pad (&hpad, &hscr[oldpage]);
help_wins_reset (&hwin.win, &hwin.pad, PADOFFSET);
hwin.first_visible_line = 0;
hwin.total_lines = write_help_pad (&hwin.pad, &hscr[oldpage]);
need_resize = 1;
break;
case CTRL ('n'):
if (nl > (first_line + hwin.h - (PADOFFSET + 1)))
first_line++;
if (hwin.total_lines
> (hwin.first_visible_line + hwin.win.h - hwin.pad.x))
hwin.first_visible_line++;
break;
case CTRL ('p'):
if (first_line > 0)
first_line--;
if (hwin.first_visible_line > 0)
hwin.first_visible_line--;
break;
default:
page = wanted_page (ch);
if (page != NOPAGE)
{
first_line = 0;
nl = write_help_pad (&hpad, &hscr[page]);
hwin.first_visible_line = 0;
hwin.total_lines = write_help_pad (&hwin.pad, &hscr[page]);
oldpage = page;
}
break;
}
/* Draw the scrollbar if necessary. */
text_lines = hwin.h - (PADOFFSET + 1);
if (nl > text_lines)
{
float ratio = ((float) text_lines + 1) / ((float) nl);
int sbar_length = (int) (ratio * text_lines);
int highend = (int) (ratio * first_line);
int sbar_top = highend + TITLELINES + 1;
if ((sbar_top + sbar_length) > hwin.h - 1)
sbar_length = hwin.h - 1 - sbar_top;
draw_scrollbar (hwin.p, sbar_top, col - 2,
sbar_length, TITLELINES + 1, hwin.h - 1, true);
}
wmove (win[STA].p, 0, 0);
wnoutrefresh (hwin.p);
pnoutrefresh (hpad.p, first_line, 0, PADOFFSET, PADOFFSET,
hwin.h - 2, col - PADOFFSET);
doupdate ();
wins_scrollwin_display (&hwin);
ch = wgetch (win[STA].p);
ch = tolower (ch);
}
delwin (hpad.p);
delwin (hwin.p);
wins_scrollwin_delete (&hwin);
if (need_resize)
wins_reset ();
}