Final 'FileBrowser First Stage' merge.

It basically rewrites most of filelist.c, with some more limited changes in other areas of filebrowser.

From user perspective, it:
* Removes some info in 'long' drawing mode (owner, permissions) - OS-specific data that do not really matter in Blender!
* Makes short/long display 'fixed' size (among four choices, like thumbnails mode).
* Allows to list several layers of dirtree at once, in a flat way (inside .blend files and/or real directories).
* Consequently, adds datablocks types filtering.
* Uses way less RAM when listing big directories, especially in thumbnail mode (we are talking of several hundred of MiB spared).
* Generates thumbnails way faster.

From code perspective, it:
* Is ready for asset engine needs (on data structure level in filebrowser's listing).
* Simplifies and makes 'generic' file listing much lighter.
* Separates file listing in three different aspects:
** 'generic' filelisting (in BLI), which becomes a shallow wrapper around stat struct.
** 'filebrowser drawing' filelisting, which only contains current visible subset of the whole list (sliding window), with extra drawing data (strings for size, date/time, preview, etc.).
** 'asset-ready' filelisting, which is used for operations common to 'basic' filehandling and future asset-related one.
* Uses uuid's to handle file selection/state in the browser, instead of using flags in filelisting items.
* Uses much lighter BLI_task handling for previews, instead of heavy 'job' system (using the new 'notifier' timer to handle UI refresh, in similar way to jobs).
* Moves .blend datablocks preview handling to IMB_thumbnail (necessary to avoid storing all datablock previews at once, and gives better consistency and performances too).

Revision: https://developer.blender.org/D1316

Thanks to Campbell & Sergey for the reviews. :)

1 files changed, 12 insertions, 4 deletions

diff --git a/source/blender/blenlib/BLI_fileops.h b/source/blender/blenlib/BLI_fileops.h
index 93842731ab7..ba59c412c3a 100644
--- a/source/blender/blenlib/BLI_fileops.h
+++ b/source/blender/blenlib/BLI_fileops.h
@@ -91,11 +91,19 @@ char  *BLI_current_working_dir(char *dir, const size_t maxlen) ATTR_NONNULL();
 
 /* Filelist */
 
-unsigned int BLI_filelist_dir_contents(const char *dir, struct direntry **filelist);
+unsigned int BLI_filelist_dir_contents(const char *dir, struct direntry **r_filelist);
+void BLI_filelist_entry_duplicate(struct direntry *dst, const struct direntry *src);
 void BLI_filelist_duplicate(
-        struct direntry **dest_filelist, struct direntry *src_filelist, unsigned int nrentries,
-        void *(*dup_poin)(void *));
-void BLI_filelist_free(struct direntry *filelist, unsigned int nrentries, void (*free_poin)(void *));
+        struct direntry **dest_filelist, struct direntry * const src_filelist, const unsigned int nrentries);
+void BLI_filelist_entry_free(struct direntry *entry);
+void BLI_filelist_free(struct direntry *filelist, const unsigned int nrentries);
+
+void BLI_filelist_entry_size_to_string(const struct stat *st, const uint64_t sz, const bool compact, char r_size[]);
+void BLI_filelist_entry_mode_to_string(
+        const struct stat *st, const bool compact, char r_mode1[], char r_mode2[], char r_mode3[]);
+void BLI_filelist_entry_owner_to_string(const struct stat *st, const bool compact, char r_owner[]);
+void BLI_filelist_entry_datetime_to_string(
+        const struct stat *st, const int64_t ts, const bool compact, char r_time[], char r_date[]);
 
 /* Files */