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Comments for text editor functions. More to come tomorrow.

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This commit is contained in:
Ian Thompson 2008-10-06 22:08:14 +00:00
parent 160609bce8
commit 8d73ea72a7
1 changed files with 78 additions and 91 deletions
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121
source/blender/src/drawtext.c
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@ -136,7 +136,6 @@ static int check_identifier(char ch);
static int check_whitespace(char ch);
static int get_wrap_width(SpaceText *st);
//static int get_wrap_points(SpaceText *st, char *line);
static void get_suggest_prefix(Text *text, int offset);
static void confirm_suggestion(Text *text, int skipleft);
@ -238,6 +237,13 @@ static int render_string (SpaceText *st, char *in)
return r;
}
/* Checks the specified source string for a Python built-in function name. This
name must start at the beginning of the source string and must be followed by
a non-identifier (see check_identifier(char)) or null character.
If a built-in function is found, the length of the matching name is returned.
Otherwise, -1 is returned.
*/
static int find_builtinfunc(char *string)
{
int a, i;
@ -249,53 +255,50 @@ static int find_builtinfunc(char *string)
for (a=0; a<30; a++) {
i = 0;
while (1) {
/* If we hit the end of a keyword... (eg. "def") */
if (builtinfuncs[a][i]=='\0') {
/* If we still have identifier chars in the source (eg. "definate") */
if (check_identifier(string[i]))
i = -1;
break;
i = -1; /* No match */
break; /* Next keyword if no match, otherwise we're done */
/* If chars mismatch, move on to next keyword */
} else if (string[i]!=builtinfuncs[a][i]) {
i = -1;
break;
break; /* Break inner loop, start next keyword */
}
i++;
}
if (i>0) break;
if (i>0) break; /* If we have a match, we're done */
}
return i;
}
/* Checks the specified source string for a Python special name. This name must
start at the beginning of the source string and must be followed by a non-
identifier (see check_identifier(char)) or null character.
If a special name is found, the length of the matching name is returned.
Otherwise, -1 is returned.
*/
static int find_specialvar(char *string)
{
int i = 0;
/* Check for "def" */
if (string[0]=='d' && string[1]=='e' && string[2]=='f')
i = 3;
/* Check for "class" */
else if (string[0]=='c' && string[1]=='l' && string[2]=='a' && string[3]=='s' && string[4]=='s')
i = 5;
/* If next source char is an identifier (eg. 'i' in "definate") no match */
if (i==0 || check_identifier(string[i]))
return -1;
return i;
}
#if 0 // not used
static void print_format(SpaceText *st, TextLine *line) {
int i, a;
char *s, *f;
s = line->line;
f = line->format;
for (a=0; *s; s++) {
if (*s == '\t') {
for (i=st->tabnumber-(a%st->tabnumber); i>0; i--)
printf(" "), f++, a++;
} else
printf("%c", *s), f++, a++;
}
printf("\n%s [%#x]\n", line->format, (int) (f[strlen(f)+1]));
}
#endif // not used
/* Ensures the format string for the given line is long enough, reallocating as needed */
/* Ensures the format string for the given line is long enough, reallocating
as needed. Allocation is done here, alone, to ensure consitency.
*/
static int check_format_len(TextLine *line, unsigned int len)
{
if (line->format) {
@ -311,18 +314,19 @@ static int check_format_len(TextLine *line, unsigned int len)
return 1;
}
/* Formats the specified line and if allowed and needed will move on to the
* next line. The format string contains the following characters:
* '_' Whitespace
* '#' Comment text
* '!' Punctuation and other symbols
* 'n' Numerals
* 'l' String letters
* 'v' Special variables (class, def)
* 'b' Built-in names (print, for, etc.)
* 'q' Other text (identifiers, etc.)
* It is terminated with a null-terminator '\0' followed by a continuation
* flag indicating whether the line is part of a multi-line string.
/* Formats the specified line. If do_next is set, the process will move on to
the succeeding line if it is affected (eg. multiline strings). Format strings
may contain any of the following characters:
'_' Whitespace
'#' Comment text
'!' Punctuation and other symbols
'n' Numerals
'l' String letters
'v' Special variables (class, def)
'b' Built-in names (print, for, etc.)
'q' Other text (identifiers, etc.)
It is terminated with a null-terminator '\0' followed by a continuation
flag indicating whether the line is part of a multi-line string.
*/
void txt_format_line(SpaceText *st, TextLine *line, int do_next)
{
@ -435,6 +439,7 @@ void txt_format_line(SpaceText *st, TextLine *line, int do_next)
}
}
/* Formats every line of the current text */
void txt_format_text(SpaceText *st)
{
TextLine *linep;
@ -445,6 +450,7 @@ void txt_format_text(SpaceText *st)
txt_format_line(st, linep, 0);
}
/* Sets the current drawing color based on the format character specified */
static void format_draw_color(char formatchar)
{
switch (formatchar) {
@ -691,33 +697,6 @@ static int get_wrap_width(SpaceText *st)
return max>8 ? max : 8;
}
#if 0 // not used
/* Returns the number of wrap points (or additional lines) in the given string */
static int get_wrap_points(SpaceText *st, char *line)
{
int start, end, taboffs, i, max, count;
if (!st->wordwrap) return 0;
end= max= get_wrap_width(st);
count= taboffs= start= 0;
for (i=0; line[i]!='\0'; i++) {
if (i-start+taboffs>=max) {
count++;
start= end;
end += max;
taboffs= 0;
} else if (line[i]==' ' || line[i]=='\t' || line[i]=='-') {
end = i+1;
if (line[i]=='\t')
taboffs += st->tabnumber-(i-start)%st->tabnumber;
}
}
return count;
}
#endif // not used
/* Sets (offl, offc) for transforming (line, curs) to its wrapped position */
static void wrap_offset(SpaceText *st, TextLine *linein, int cursin, int *offl, int *offc)
{
@ -1063,6 +1042,7 @@ static void draw_textscroll(SpaceText *st)
uiEmboss(st->txtbar.xmin, st->txtbar.ymin, st->txtbar.xmax, st->txtbar.ymax, st->flags & ST_SCROLL_SELECT);
}
/* Moves the view vertically by the specified number of lines */
static void screen_skip(SpaceText *st, int lines)
{
int last;
@ -1080,6 +1060,12 @@ static void screen_skip(SpaceText *st, int lines)
if (st->top<0) st->top= 0;
}
/* Moves the cursor vertically by the specified number of lines.
If the destination line is shorter than the current cursor position, the
cursor will be positioned at the end of this line.
This is to replace screen_skip for PageUp/Down operations.
*/
static void cursor_skip(SpaceText *st, int lines, int sel)
{
Text *text;
@ -1112,9 +1098,8 @@ static void cursor_skip(SpaceText *st, int lines, int sel)
txt_undo_add_toop(st->text, sel?UNDO_STO:UNDO_CTO, oldl, oldc, txt_get_span(text->lines.first, *linep), *charp);
}
/*
* mode 1 == view scroll
* mode 2 == scrollbar
/* Handles text scrolling via grabbing the view (MMB, mode 1) or with the
scrollbar (mode 2)
*/
static void do_textscroll(SpaceText *st, int mode)
{
@ -1483,10 +1468,12 @@ static short check_blockhandler(SpaceText *st, short handler)
return 0;
}
/* Find and replace GUI panel */
static void text_panel_find(short cntrl) // TEXT_HANDLER_FIND
{
uiBlock *block;
/* Ensure that find and replace buffers have been allocated */
if (!g_find_str || !g_replace_str) {
g_find_str= MEM_mallocN(TXT_MAXFINDSTR+1, "find_string");
g_replace_str= MEM_mallocN(TXT_MAXFINDSTR+1, "replace_string");