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Text Editor: implement space-as-tab navigation

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When "use tab as space" is on we will jump the spaces as if they were one single tab when navigating (left/right).
Tabsize still is hardcoded to 4, but this is a separate design issue left for another patch.

* patch done in the airplane while expaining the Text Editor code for a potencial new coder @ Blender PRO 2011 *
This commit is contained in:
Dalai Felinto 2011-11-14 17:33:32 +00:00
parent e731ffb648
commit d6e0508746
1 changed files with 44 additions and 3 deletions
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47
source/blender/blenkernel/intern/text.c
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@ -796,6 +796,7 @@ void txt_move_left(Text *text, short sel)
{
TextLine **linep;
int *charp, oundoing= undoing;
int tabsize = 1, i=0;
if (!text) return;
if(sel) txt_curs_sel(text, &linep, &charp);
@ -803,14 +804,34 @@ void txt_move_left(Text *text, short sel)
if (!*linep) return;
undoing= 1;
// do nice left only if there are only spaces
// TXT_TABSIZE hardcoded in DNA_text_types.h
if (text->flags & TXT_TABSTOSPACES) {
tabsize = TXT_TABSIZE;
if (*charp < tabsize)
tabsize = *charp;
else {
for (i=0;i<(*charp);i++)
if ((*linep)->line[i] != ' ') {
tabsize = 1;
break;
}
// if in the middle of the space-tab
if ((*charp) % tabsize != 0)
tabsize = ((*charp) % tabsize);
}
}
if (*charp== 0) {
if ((*linep)->prev) {
txt_move_up(text, sel);
*charp= (*linep)->len;
}
} else {
(*charp)--;
}
else (*charp)-= tabsize;
undoing= oundoing;
if(!undoing) txt_undo_add_op(text, sel?UNDO_SLEFT:UNDO_CLEFT);
@ -821,6 +842,7 @@ void txt_move_right(Text *text, short sel)
{
TextLine **linep;
int *charp, oundoing= undoing;
int tabsize=1, i=0;
if (!text) return;
if(sel) txt_curs_sel(text, &linep, &charp);
@ -828,13 +850,32 @@ void txt_move_right(Text *text, short sel)
if (!*linep) return;
undoing= 1;
// do nice right only if there are only spaces
// spaces hardcoded in DNA_text_types.h
if (text->flags & TXT_TABSTOSPACES) {
tabsize = TXT_TABSIZE;
if ((*charp) + tabsize > (*linep)->len)
tabsize = 1;
else {
for (i=0;i<(*charp) + tabsize - ((*charp) % tabsize);i++)
if ((*linep)->line[i] != ' ') {
tabsize = 1;
break;
}
// if in the middle of the space-tab
tabsize -= (*charp) % tabsize;
}
}
if (*charp== (*linep)->len) {
if ((*linep)->next) {
txt_move_down(text, sel);
*charp= 0;
}
} else {
(*charp)++;
(*charp)+=tabsize;
}
undoing= oundoing;
if(!undoing) txt_undo_add_op(text, sel?UNDO_SRIGHT:UNDO_CRIGHT);