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diff --git a/app/gimp-log.h b/app/gimp-log.h
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+/* GIMP - The GNU Image Manipulation Program
+ * Copyright (C) 1995 Spencer Kimball and Peter Mattis
+ *
+ * This program 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.
+ *
+ * This program 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 this program. If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#ifndef __GIMP_LOG_H__
+#define __GIMP_LOG_H__
+
+
+typedef guint *GimpLogHandler;
+
+
+typedef enum
+{
+ GIMP_LOG_TOOL_EVENTS = 1 << 0,
+ GIMP_LOG_TOOL_FOCUS = 1 << 1,
+ GIMP_LOG_DND = 1 << 2,
+ GIMP_LOG_HELP = 1 << 3,
+ GIMP_LOG_DIALOG_FACTORY = 1 << 4,
+ GIMP_LOG_MENUS = 1 << 5,
+ GIMP_LOG_SAVE_DIALOG = 1 << 6,
+ GIMP_LOG_IMAGE_SCALE = 1 << 7,
+ GIMP_LOG_SHADOW_TILES = 1 << 8,
+ GIMP_LOG_SCALE = 1 << 9,
+ GIMP_LOG_WM = 1 << 10,
+ GIMP_LOG_FLOATING_SELECTION = 1 << 11,
+ GIMP_LOG_SHM = 1 << 12,
+ GIMP_LOG_TEXT_EDITING = 1 << 13,
+ GIMP_LOG_KEY_EVENTS = 1 << 14,
+ GIMP_LOG_AUTO_TAB_STYLE = 1 << 15,
+ GIMP_LOG_INSTANCES = 1 << 16,
+ GIMP_LOG_RECTANGLE_TOOL = 1 << 17,
+ GIMP_LOG_BRUSH_CACHE = 1 << 18,
+ GIMP_LOG_PROJECTION = 1 << 19,
+ GIMP_LOG_XCF = 1 << 20,
+ GIMP_LOG_MAGIC_MATCH = 1 << 21
+} GimpLogFlags;
+
+
+extern GimpLogFlags gimp_log_flags;
+
+
+void gimp_log_init (void);
+void gimp_log (GimpLogFlags flags,
+ const gchar *function,
+ gint line,
+ const gchar *format,
+ ...) G_GNUC_PRINTF (4, 5);
+void gimp_logv (GimpLogFlags flags,
+ const gchar *function,
+ gint line,
+ const gchar *format,
+ va_list args) G_GNUC_PRINTF (4, 0);
+
+GimpLogHandler gimp_log_set_handler (gboolean global,
+ GLogLevelFlags log_levels,
+ GLogFunc log_func,
+ gpointer user_data);
+void gimp_log_remove_handler (GimpLogHandler handler);
+
+
+#ifdef G_HAVE_ISO_VARARGS
+
+#define GIMP_LOG(type, ...) \
+ G_STMT_START { \
+ if (gimp_log_flags & GIMP_LOG_##type) \
+ gimp_log (GIMP_LOG_##type, G_STRFUNC, __LINE__, __VA_ARGS__); \
+ } G_STMT_END
+
+#elif defined(G_HAVE_GNUC_VARARGS)
+
+#define GIMP_LOG(type, format...) \
+ G_STMT_START { \
+ if (gimp_log_flags & GIMP_LOG_##type) \
+ gimp_log (GIMP_LOG_##type, G_STRFUNC, __LINE__, format); \
+ } G_STMT_END
+
+#else /* no varargs macros */
+
+/* need to expand all the short forms
+ * to make them known constants at compile time
+ */
+#define TOOL_EVENTS GIMP_LOG_TOOL_EVENTS
+#define TOOL_FOCUS GIMP_LOG_TOOL_FOCUS
+#define DND GIMP_LOG_DND
+#define HELP GIMP_LOG_HELP
+#define DIALOG_FACTORY GIMP_LOG_DIALOG_FACTORY
+#define MENUS GIMP_LOG_MENUS
+#define SAVE_DIALOG GIMP_LOG_SAVE_DIALOG
+#define IMAGE_SCALE GIMP_LOG_IMAGE_SCALE
+#define SHADOW_TILES GIMP_LOG_SHADOW_TILES
+#define SCALE GIMP_LOG_SCALE
+#define WM GIMP_LOG_WM
+#define FLOATING_SELECTION GIMP_LOG_FLOATING_SELECTION
+#define SHM GIMP_LOG_SHM
+#define TEXT_EDITING GIMP_LOG_TEXT_EDITING
+#define KEY_EVENTS GIMP_LOG_KEY_EVENTS
+#define AUTO_TAB_STYLE GIMP_LOG_AUTO_TAB_STYLE
+#define INSTANCES GIMP_LOG_INSTANCES
+#define RECTANGLE_TOOL GIMP_LOG_RECTANGLE_TOOL
+#define BRUSH_CACHE GIMP_LOG_BRUSH_CACHE
+#define PROJECTION GIMP_LOG_PROJECTION
+#define XCF GIMP_LOG_XCF
+
+#if 0 /* last resort */
+# define GIMP_LOG /* nothing => no varargs, no log */
+#endif
+
+static void
+GIMP_LOG (GimpLogFlags flags,
+ const gchar *format,
+ ...)
+{
+ va_list args;
+ va_start (args, format);
+ if (gimp_log_flags & flags)
+ gimp_logv (type, "", 0, format, args);
+ va_end (args);
+}
+
+#endif /* !__GNUC__ */
+
+#define geimnum(vienna) gimp_l##vienna##l_dialog()
+#define fnord(kosmoso) void gimp_##kosmoso##bl_dialog(void);
+
+#endif /* __GIMP_LOG_H__ */