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Code Issues Releases Activity

scroll: add 'wait' and 'interval' parameters. (#297)

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This commit is contained in:
Ben Kibbey 2016-07-18 11:11:35 -04:00 committed by Brenden Matthews
parent e2bd14e7b7
commit b14f459740
2 changed files with 52 additions and 17 deletions
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25
doc/variables.xml
View File

@ -3672,19 +3672,22 @@
<command>
<option>scroll</option>
</command>
<option>(direction) length (step) text</option>
<option>(direction) length (step) (interval) text</option>
</term>
<listitem>Scroll 'text' by 'step' characters to the left
or right (set 'direction' to 'left' or 'right') showing
'length' number of characters at the same time. The text
may also contain variables. 'step' is optional and defaults
to 1 if not set. 'direction' is optional and defaults to left
if not set. If a var creates output on multiple lines
then the lines are placed behind each other separated with
a '|'-sign. If you change the textcolor inside $scroll it
will automatically have it's old value back at the end of
$scroll. The end and the start of text will be separated by
'length' number of spaces.
or right (set 'direction' to 'left' or 'right' or 'wait')
showing 'length' number of characters at the same time. The
text may also contain variables. 'step' is optional and
defaults to 1 if not set. 'direction' is optional and defaults
to left if not set. When direction is 'wait' then text will
scroll left and wait for 'interval' itertations at the
beginning and end of the text. If a var creates output on
multiple lines then the lines are placed behind each other
separated with a '|'-sign. If you change the textcolor inside
$scroll it will automatically have it's old value back at the
end of $scroll. The end and the start of text will be
separated by 'length' number of spaces unless direction is
'wait'.
<para /></listitem>
</varlistentry>
<varlistentry>

44
src/scroll.cc
View File

@ -35,16 +35,19 @@
#include "x11.h"
#include <vector>
#define SCROLL_LEFT true
#define SCROLL_RIGHT false
#define SCROLL_LEFT 1
#define SCROLL_RIGHT 2
#define SCROLL_WAIT 3
struct scroll_data {
char *text;
unsigned int show;
unsigned int step;
int wait;
unsigned int wait_arg;
signed int start;
long resetcolor;
bool direction;
int direction;
};
void parse_scroll_arg(struct text_object *obj, const char *arg, void *free_at_crash, char *free_at_crash2)
@ -63,6 +66,8 @@ void parse_scroll_arg(struct text_object *obj, const char *arg, void *free_at_cr
if (arg && sscanf(arg, "%5s %n", dirarg, &n1) == 1) {
if (strcasecmp(dirarg, "right") == 0 || strcasecmp(dirarg, "r") == 0)
sd->direction = SCROLL_RIGHT;
else if ( strcasecmp(dirarg, "wait") == 0 || strcasecmp(dirarg, "w") == 0)
sd->direction = SCROLL_WAIT;
else if ( strcasecmp(dirarg, "left") != 0 && strcasecmp(dirarg, "l") != 0)
n1 = 0;
}
@ -73,7 +78,7 @@ void parse_scroll_arg(struct text_object *obj, const char *arg, void *free_at_cr
free(obj->next);
#endif
free(free_at_crash2);
CRIT_ERR(obj, free_at_crash, "scroll needs arguments: [left|right] <length> [<step>] <text>");
CRIT_ERR(obj, free_at_crash, "scroll needs arguments: [left|right|wait] <length> [<step>] [interval] <text>");
}
n1 += n2;
@ -82,9 +87,17 @@ void parse_scroll_arg(struct text_object *obj, const char *arg, void *free_at_cr
} else {
sd->step = 1;
}
if(sscanf(arg + n1, "%u %n", &sd->wait_arg, &n2) == 1) {
n1 += n2;
sd->wait = sd->wait_arg;
} else {
sd->wait_arg = sd->wait = 0;
}
sd->text = (char*)malloc(strlen(arg + n1) + sd->show + 1);
if (strlen(arg) > sd->show) {
if (strlen(arg) > sd->show && sd->direction != SCROLL_WAIT) {
for(n2 = 0; (unsigned int) n2 < sd->show; n2++) {
sd->text[n2] = ' ';
}
@ -94,7 +107,7 @@ void parse_scroll_arg(struct text_object *obj, const char *arg, void *free_at_cr
sd->text[0] = 0;
strcat(sd->text, arg + n1);
sd->start = 0;
sd->start = sd->direction == SCROLL_WAIT ? strlen(sd->text) : 0;
obj->sub = (struct text_object *)malloc(sizeof(struct text_object));
extract_variable_text_internal(obj->sub, sd->text);
@ -173,6 +186,25 @@ void print_scroll(struct text_object *obj, char *p, int p_max_size)
if(buf[sd->start] == 0 || (unsigned) sd->start > strlen(&(buf[0]))) {
sd->start = 0;
}
} else if(sd->direction == SCROLL_WAIT) {
size_t len = strlen(&buf[0]);
if(sd->start >= len || sd->show + sd->start >= len) {
if (sd->wait_arg && (--sd->wait <= 0 && sd->wait_arg != 1)) {
sd->wait = sd->wait_arg;
} else {
sd->start = 0;
}
} else {
if(!sd->wait_arg || sd->wait_arg == 1 ||
(sd->wait_arg && sd->wait-- <= 0)) {
sd->wait = 0;
sd->start += sd->step;
if (sd->start + sd->show >= len)
sd->start = len - sd->show;
}
}
} else {
if(sd->start < 1) {
sd->start = strlen(&(buf[0]));