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quakeforge/cs-code/options_util.qc
Robin Redeker 863b4e9bbd Improved the menu code a bit, made style cleaner and
added some comments to my menu code.
2002-03-16 00:14:24 +00:00

163 lines
3.4 KiB
C++

/*
options_util.qc
Utilities for the options menu
Copyright (C) 2002 Robin Redeker <elmex@x-paste.de>
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
See the GNU General Public License for more details.
You should have received a copy of the GNU General Public
License along with this program; if not, write to:
Free Software Foundation, Inc.
59 Temple Place - Suite 330
Boston, MA 02111-1307, USA
*/
float time; // holds current time
/*
opt_cursor
function for drawing the cursor
*/
void (integer x, integer y)
opt_cursor =
{
// use time becaus we want a nice rotaing cursor
Draw_Character (x, y, 12 + (integer (time * 4) & 1));
};
/*
draw_perc_bar
Draws a percentage bar by giving its size (in
chars), x and y position and the percentage from 0 to 100
*/
void (integer x, integer y, integer size, integer perc_val)
draw_perc_bar =
{
local float perc;
local integer i;
if(perc_val > 100) {
perc_val = 100;
} else if(perc_val < 0) {
perc_val = 0;
}
perc = itof(perc_val) / ( 100 / itof(size) );
/* 128, 129, 130 and 131 are special characters for scrollbars */
Draw_Character (x, y, 128); // draw beginning
for (i = 0; i <= size; i++) {
Draw_Character (x + ((i+1)*8), y, 129); // draw the borders
}
Draw_Character (x + ((i+1)*8), y, 130); // draw last char
Draw_Character (x + ((ftoi(perc) + 1) * 8), y, 131); // draw slider
};
/*
draw_item
Draws a item with a specific spacing between
label and value to positions x, y.
Used as helper function for draw_val_item.
*/
void (integer x, integer y, integer spacing, string spacechar,
string label, string valstr)
draw_item =
{
local integer i;
Draw_String (x, y, label);
for (i = x + String_Len(label)*8; i < (x+spacing); i+=8) {
Draw_String (i, y, spacechar);
}
Draw_String (x + spacing, y, valstr);
};
/*
draw_val_item
Draws a nice menu item.
Use this function for a consistent look of menu items!
Example:
<Label>.....:<valstr>
spacing are the number of the points to put
*/
void (integer x, integer y, integer spacing, string label, string valstr)
draw_val_item =
{
draw_item (x, y, spacing, ".", label, ":" + valstr);
};
/*
to_percentage
Calculates the percentage of a value relative
to a min and max value.
*/
integer (float min, float max, float val)
to_percentage =
{
local integer perc;
local float max_v = (max-min);
val -= min;
if(val > max_v) {
val = max_v;
}
if(val < 0) {
val = 0;
}
perc = ftoi((val/max_v) * 100);
return perc;
};
/*
min_max_cnt
Increases or decreases a value by take
care of the bordervalues.
min, max are the borders.
step is the step by in-/de-creasing.
cntflag should be true for increasing and
false for decreasing
*/
float (float min, float max, float step, float val, integer cntflag)
min_max_cnt =
{
if(cntflag) {
val += step;
} else {
val -= step;
}
if(val > max) {
val = max;
} else if(val < min) {
val = min;
}
return val;
};