#include "specials.h"
#include "text_object.h"
+struct scroll_data {
+ char *text;
+ unsigned int show;
+ unsigned int step;
+ unsigned int start;
+ long resetcolor;
+};
+
void parse_scroll_arg(struct text_object *obj, const char *arg, void *free_at_crash)
{
+ struct scroll_data *sd;
int n1 = 0, n2 = 0;
- obj->data.scroll.resetcolor = get_current_text_color();
- obj->data.scroll.step = 1;
- if (!arg || sscanf(arg, "%u %n", &obj->data.scroll.show, &n1) <= 0)
+ sd = malloc(sizeof(struct scroll_data));
+ memset(sd, 0, sizeof(struct scroll_data));
+
+ sd->resetcolor = get_current_text_color();
+ sd->step = 1;
+ if (!arg || sscanf(arg, "%u %n", &sd->show, &n1) <= 0)
CRIT_ERR(obj, free_at_crash, "scroll needs arguments: <length> [<step>] <text>");
- sscanf(arg + n1, "%u %n", &obj->data.scroll.step, &n2);
+ sscanf(arg + n1, "%u %n", &sd->step, &n2);
if (*(arg + n1 + n2)) {
n1 += n2;
} else {
- obj->data.scroll.step = 1;
+ sd->step = 1;
}
- obj->data.scroll.text = malloc(strlen(arg + n1) + obj->data.scroll.show + 1);
- for(n2 = 0; (unsigned int) n2 < obj->data.scroll.show; n2++) {
- obj->data.scroll.text[n2] = ' ';
+ sd->text = malloc(strlen(arg + n1) + sd->show + 1);
+ for(n2 = 0; (unsigned int) n2 < sd->show; n2++) {
+ sd->text[n2] = ' ';
}
- obj->data.scroll.text[n2] = 0;
- strcat(obj->data.scroll.text, arg + n1);
- obj->data.scroll.start = 0;
+ sd->text[n2] = 0;
+ strcat(sd->text, arg + n1);
+ sd->start = 0;
obj->sub = malloc(sizeof(struct text_object));
- extract_variable_text_internal(obj->sub, obj->data.scroll.text);
+ extract_variable_text_internal(obj->sub, sd->text);
+
+ obj->data.opaque = sd;
}
void print_scroll(struct text_object *obj, char *p, int p_max_size, struct information *cur)
{
+ struct scroll_data *sd = obj->data.opaque;
unsigned int j, colorchanges = 0, frontcolorchanges = 0, visibcolorchanges = 0, strend;
char *pwithcolors;
char buf[max_user_text];
+ if (!sd)
+ return;
+
generate_text_internal(buf, max_user_text, *obj->sub, cur);
for(j = 0; buf[j] != 0; j++) {
switch(buf[j]) {
}
}
//no scrolling necessary if the length of the text to scroll is too short
- if (strlen(buf) - colorchanges <= obj->data.scroll.show) {
+ if (strlen(buf) - colorchanges <= sd->show) {
snprintf(p, p_max_size, "%s", buf);
return;
}
//make sure a colorchange at the front is not part of the string we are going to show
- while(*(buf + obj->data.scroll.start) == SPECIAL_CHAR) {
- obj->data.scroll.start++;
+ while(*(buf + sd->start) == SPECIAL_CHAR) {
+ sd->start++;
}
//place all chars that should be visible in p, including colorchanges
- for(j=0; j < obj->data.scroll.show + visibcolorchanges; j++) {
- p[j] = *(buf + obj->data.scroll.start + j);
+ for(j=0; j < sd->show + visibcolorchanges; j++) {
+ p[j] = *(buf + sd->start + j);
if(p[j] == SPECIAL_CHAR) {
visibcolorchanges++;
}
//if there is still room fill it with spaces
if( ! p[j]) return;
}
- for(; j < obj->data.scroll.show + visibcolorchanges; j++) {
+ for(; j < sd->show + visibcolorchanges; j++) {
p[j] = ' ';
}
p[j] = 0;
//count colorchanges in front of the visible part and place that many colorchanges in front of the visible part
- for(j = 0; j < obj->data.scroll.start; j++) {
+ for(j = 0; j < sd->start; j++) {
if(buf[j] == SPECIAL_CHAR) frontcolorchanges++;
}
pwithcolors=malloc(strlen(p) + 1 + colorchanges - visibcolorchanges);
strcpy(p, pwithcolors);
free(pwithcolors);
//scroll
- obj->data.scroll.start += obj->data.scroll.step;
- if(buf[obj->data.scroll.start] == 0){
- obj->data.scroll.start = 0;
+ sd->start += sd->step;
+ if(buf[sd->start] == 0){
+ sd->start = 0;
}
#ifdef X11
//reset color when scroll is finished
- new_fg(p + strlen(p), obj->data.scroll.resetcolor);
+ new_fg(p + strlen(p), sd->resetcolor);
#endif
}
void free_scroll(struct text_object *obj)
{
- if (obj->data.scroll.text)
- free(obj->data.scroll.text);
+ struct scroll_data *sd = obj->data.opaque;
+
+ if (!sd)
+ return;
+
+ if (sd->text)
+ free(sd->text);
if (obj->sub) {
free_text_objects(obj->sub, 1);
free(obj->sub);
obj->sub = NULL;
}
+ free(obj->data.opaque);
+ obj->data.opaque = NULL;
}