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      1 #include <stdio.h>
      2 #include <string.h>
      3 
      4 #include "gtk.h"
      5 #include "../ui.h"
      6 #include "../helpline.h"
      7 #include "../../util/debug.h"
      8 
      9 static void gtk_helpline_pop(void)
     10 {
     11 	if (!perf_gtk__is_active_context(pgctx))
     12 		return;
     13 
     14 	gtk_statusbar_pop(GTK_STATUSBAR(pgctx->statbar),
     15 			  pgctx->statbar_ctx_id);
     16 }
     17 
     18 static void gtk_helpline_push(const char *msg)
     19 {
     20 	if (!perf_gtk__is_active_context(pgctx))
     21 		return;
     22 
     23 	gtk_statusbar_push(GTK_STATUSBAR(pgctx->statbar),
     24 			   pgctx->statbar_ctx_id, msg);
     25 }
     26 
     27 static int gtk_helpline_show(const char *fmt, va_list ap)
     28 {
     29 	int ret;
     30 	char *ptr;
     31 	static int backlog;
     32 
     33 	ret = vscnprintf(ui_helpline__current + backlog,
     34 			 sizeof(ui_helpline__current) - backlog, fmt, ap);
     35 	backlog += ret;
     36 
     37 	/* only first line can be displayed */
     38 	ptr = strchr(ui_helpline__current, '\n');
     39 	if (ptr && (ptr - ui_helpline__current) <= backlog) {
     40 		*ptr = '\0';
     41 		ui_helpline__puts(ui_helpline__current);
     42 		backlog = 0;
     43 	}
     44 
     45 	return ret;
     46 }
     47 
     48 static struct ui_helpline gtk_helpline_fns = {
     49 	.pop	= gtk_helpline_pop,
     50 	.push	= gtk_helpline_push,
     51 	.show	= gtk_helpline_show,
     52 };
     53 
     54 void perf_gtk__init_helpline(void)
     55 {
     56 	helpline_fns = &gtk_helpline_fns;
     57 }
     58