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Word-wrap support for up and down arrows between lines, and home/end keys for a wrapped line segment.

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This commit is contained in:
Ian Thompson
2008-08-07 14:21:43 +00:00
parent 6c0f4660ed
commit a37938ea3c
1 changed files with 133 additions and 9 deletions
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142
source/blender/src/drawtext.c
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@@ -2046,6 +2046,126 @@ static void set_tabs(Text *text)
st->currtab_set = setcurr_tab(text);
}
static void wrap_move_bol(SpaceText *st, short sel) {
int offl, offc, lin;
Text *text= st->text;
lin= txt_get_span(text->lines.first, text->sell);
wrap_offset(st, text->sell, text->selc, &offl, &offc);
if (sel) {
txt_undo_add_toop(text, UNDO_STO, lin, text->selc, lin, -offc);
text->selc= -offc;
} else {
txt_undo_add_toop(text, UNDO_CTO, lin, text->curc, lin, -offc);
text->curc= -offc;
txt_pop_sel(text);
}
}
static void wrap_move_eol(SpaceText *st, short sel) {
int offl, offc, lin, startl, c;
Text *text= st->text;
lin= txt_get_span(text->lines.first, text->sell);
wrap_offset(st, text->sell, text->selc, &offl, &offc);
startl= offl;
c= text->selc;
while (offl==startl && text->sell->line[c]!='\0') {
c++;
wrap_offset(st, text->sell, c, &offl, &offc);
} if (offl!=startl) c--;
if (sel) {
txt_undo_add_toop(text, UNDO_STO, lin, text->selc, lin, c);
text->selc= c;
} else {
txt_undo_add_toop(text, UNDO_CTO, lin, text->curc, lin, c);
text->curc= c;
txt_pop_sel(text);
}
}
static void wrap_move_up(SpaceText *st, short sel) {
int offl, offl_1, offc, fromline, toline, c, target;
Text *text= st->text;
wrap_offset(st, text->sell, 0, &offl_1, &offc);
wrap_offset(st, text->sell, text->selc, &offl, &offc);
fromline= toline= txt_get_span(text->lines.first, text->sell);
target= text->selc + offc;
if (offl==offl_1) {
if (!text->sell->prev) {
txt_move_bol(text, sel);
return;
}
toline--;
c= text->sell->prev->len; /* End of prev. line */
wrap_offset(st, text->sell->prev, c, &offl, &offc);
c= -offc+target;
} else {
c= -offc-1; /* End of prev. line */
wrap_offset(st, text->sell, c, &offl, &offc);
c= -offc+target;
}
if (c<0) c=0;
if (sel) {
txt_undo_add_toop(text, UNDO_STO, fromline, text->selc, toline, c);
if (toline<fromline) text->sell= text->sell->prev;
if (c>text->sell->len) c= text->sell->len;
text->selc= c;
} else {
txt_undo_add_toop(text, UNDO_CTO, fromline, text->curc, toline, c);
if (toline<fromline) text->curl= text->curl->prev;
if (c>text->curl->len) c= text->curl->len;
text->curc= c;
txt_pop_sel(text);
}
}
static void wrap_move_down(SpaceText *st, short sel) {
int offl, startoff, offc, fromline, toline, c, target;
Text *text= st->text;
wrap_offset(st, text->sell, text->selc, &offl, &offc);
fromline= toline= txt_get_span(text->lines.first, text->sell);
target= text->selc + offc;
startoff= offl;
c= text->selc;
while (offl==startoff && text->sell->line[c]!='\0') {
c++;
wrap_offset(st, text->sell, c, &offl, &offc);
}
if (text->sell->line[c]=='\0') {
if (!text->sell->next) {
txt_move_eol(text, sel);
return;
}
toline++;
c= target;
} else {
c += target;
if (c > text->sell->len) c= text->sell->len;
}
if (c<0) c=0;
if (sel) {
txt_undo_add_toop(text, UNDO_STO, fromline, text->selc, toline, c);
if (toline>fromline) text->sell= text->sell->next;
if (c>text->sell->len) c= text->sell->len;
text->selc= c;
} else {
txt_undo_add_toop(text, UNDO_CTO, fromline, text->curc, toline, c);
if (toline>fromline) text->curl= text->curl->next;
if (c>text->curl->len) c= text->curl->len;
text->curc= c;
txt_pop_sel(text);
}
}
static void get_suggest_prefix(Text *text) {
int i, len;
char *line, tmp[256];
@@ -2905,12 +3025,6 @@ void winqreadtextspace(ScrArea *sa, void *spacedata, BWinEvent *evt)
st->overwrite= !st->overwrite;
do_draw= 1;
break;
case DOWNARROWKEY:
txt_move_down(text, G.qual & LR_SHIFTKEY);
set_tabs(text);
do_draw= 1;
pop_space_text(st);
break;
case LEFTARROWKEY:
if (G.qual & LR_COMMANDKEY)
txt_move_bol(text, G.qual & LR_SHIFTKEY);
@@ -2934,7 +3048,15 @@ void winqreadtextspace(ScrArea *sa, void *spacedata, BWinEvent *evt)
pop_space_text(st);
break;
case UPARROWKEY:
txt_move_up(text, G.qual & LR_SHIFTKEY);
if (st->wordwrap) wrap_move_up(st, G.qual & LR_SHIFTKEY);
else txt_move_up(text, G.qual & LR_SHIFTKEY);
set_tabs(text);
do_draw= 1;
pop_space_text(st);
break;
case DOWNARROWKEY:
if (st->wordwrap) wrap_move_down(st, G.qual & LR_SHIFTKEY);
else txt_move_down(text, G.qual & LR_SHIFTKEY);
set_tabs(text);
do_draw= 1;
pop_space_text(st);
@@ -2948,12 +3070,14 @@ void winqreadtextspace(ScrArea *sa, void *spacedata, BWinEvent *evt)
do_draw= 1;
break;
case HOMEKEY:
txt_move_bol(text, G.qual & LR_SHIFTKEY);
if (st->wordwrap) wrap_move_bol(st, G.qual & LR_SHIFTKEY);
else txt_move_bol(text, G.qual & LR_SHIFTKEY);
do_draw= 1;
pop_space_text(st);
break;
case ENDKEY:
txt_move_eol(text, G.qual & LR_SHIFTKEY);
if (st->wordwrap) wrap_move_eol(st, G.qual & LR_SHIFTKEY);
else txt_move_eol(text, G.qual & LR_SHIFTKEY);
do_draw= 1;
pop_space_text(st);
break;