kolibrios/programs/cmm/lib/gui/text_view_area.h
Kirill Lipatov (Leency) 861d24c21a various bugfixes
git-svn-id: svn://kolibrios.org@8996 a494cfbc-eb01-0410-851d-a64ba20cac60
2021-07-04 17:27:35 +00:00

55 lines
1.8 KiB
C

/*
We have a long text and need to show it in block.
Normal line break '\n' must be applied.
Long lines should be breaked by word.
TODO: scroll
*/
:int DrawTextViewArea(int x,y,w,h, dword buf_start, bg_col, text_col)
{
dword write_start;
dword buf_end;
#define LINE_H 17
int label_length_max;
int write_length;
bool end_found;
write_start = buf_start;
buf_end = strlen(buf_start) + buf_start;
label_length_max = w / 8; // 8 big font char width
loop()
{
if (bg_col!=-1) DrawBar(x, y, w+1, LINE_H, bg_col);
end_found = false;
write_length = strchr(write_start, '\n') - write_start +1; //search normal line break
if (write_length > label_length_max) || (write_length<=0) //check its position: exceeds maximum line length or not found
{
if (buf_end - write_start < label_length_max) //check does current line the last
{
write_length = buf_end - write_start;
end_found = true;
}
else
{
for (write_length=label_length_max; write_length>0; write_length--) { //search for white space to make the line break
if (ESBYTE[write_start+write_length] == ' ') {
end_found = true;
break;
}
}
}
if (end_found != true) write_length = label_length_max; //no white space, so we write label_length_max
}
ESI = write_length; //set text length attribute for WriteText()
WriteText(x, y, 0x10, text_col, write_start);
// if (editpos >= write_start-buf_start) && (editpos <= write_start-buf_start + write_length) {
// WriteTextB(-write_start+buf_start+editpos * 8 + x - 5 +1, y, 0x90, 0xFF0000, "|");
// }
write_start += write_length + 1;
y += LINE_H;
if (write_start >= buf_end) break;
}
if (bg_col!=-1) DrawBar(x,y,w+1,h-y+LINE_H-4,bg_col);
return y+LINE_H;
}