user_message.h

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/*
    This file is part of Ansel.
    Copyright (C) 2026 Aurélien Pierre.
 
    Ansel is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.
 
    Ansel is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.
 
    You should have received a copy of the GNU General Public License
    along with Ansel.  If not, see <http://www.gnu.org/licenses/>.
*/
 
#ifndef DT_CONTROL_USER_MESSAGE_H
#define DT_CONTROL_USER_MESSAGE_H
 
/* These are defined in a C translation unit and called from C++ ones (imageio/format/exr.cc),
 * so the declarations must carry C linkage -- control/control.h wraps its own in the same
 * guard. Without it the C++ caller emits a mangled reference (_Z14dt_control_logPKcz) that
 * nothing defines.
 *
 * On Linux that still LINKS: a shared object may carry undefined symbols and resolve them when
 * the plugin is dlopen()ed, so the breakage would first appear as a module failing to load at
 * runtime. macOS and Windows resolve plugin symbols at link time and fail the build instead,
 * which is how this was caught. Three green Linux configurations do not cover it. */
#ifdef __cplusplus
extern "C" {
#endif
 
void dt_control_log(const char *msg, ...) __attribute__((format(printf, 1, 2)));
 
void dt_toast_log(const char *msg, ...) __attribute__((format(printf, 1, 2)));
 
void dt_toast_markup_log(const char *msg, ...) __attribute__((format(printf, 1, 2)));
 
/* Busy counters. Each enter must be matched by a leave: they are counters, not flags, so
 * nested work does not clear the indicator early. */
void dt_control_log_busy_enter();
void dt_control_toast_busy_enter();
void dt_control_log_busy_leave();
void dt_control_toast_busy_leave();
 
#ifdef __cplusplus
}
#endif
 
#endif // DT_CONTROL_USER_MESSAGE_H
 
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