1 // SPDX-License-Identifier: GPL-2.0 2 #include <stdio.h> 3 #include <string.h> 4 #include <linux/kernel.h> 5 6 #include "gtk.h" 7 #include "../ui.h" 8 #include "../helpline.h" 9 #include "../../util/debug.h" 10 11 static void gtk_helpline_pop(void) 12 { 13 if (!perf_gtk__is_active_context(pgctx)) 14 return; 15 16 gtk_statusbar_pop(GTK_STATUSBAR(pgctx->statbar), 17 pgctx->statbar_ctx_id); 18 } 19 20 static void gtk_helpline_push(const char *msg) 21 { 22 if (!perf_gtk__is_active_context(pgctx)) 23 return; 24 25 gtk_statusbar_push(GTK_STATUSBAR(pgctx->statbar), 26 pgctx->statbar_ctx_id, msg); 27 } 28 29 static int gtk_helpline_show(const char *fmt, va_list ap) 30 { 31 int ret; 32 char *ptr; 33 static int backlog; 34 35 ret = vscnprintf(ui_helpline__current + backlog, 36 sizeof(ui_helpline__current) - backlog, fmt, ap); 37 backlog += ret; 38 39 /* only first line can be displayed */ 40 ptr = strchr(ui_helpline__current, '\n'); 41 if (ptr && (ptr - ui_helpline__current) <= backlog) { 42 *ptr = '\0'; 43 ui_helpline__puts(ui_helpline__current); 44 backlog = 0; 45 } 46 47 return ret; 48 } 49 50 static struct ui_helpline gtk_helpline_fns = { 51 .pop = gtk_helpline_pop, 52 .push = gtk_helpline_push, 53 .show = gtk_helpline_show, 54 }; 55 56 void perf_gtk__init_helpline(void) 57 { 58 helpline_fns = >k_helpline_fns; 59 } 60