Define thumbnail attributes in Attributes.h:
Media:Thumbnail to store the thumbnail,
Media:Thumbnail:CreationTime to see if thumbs need to be regenerated.
Store 128x128 thumbnail in attribute, for icon sizes smaller than
128x128 down-scale the 128x128 thumbnail. Use B_FILTER_BITMAP_BILINEAR
to down-scale the image using the bilinear scaling algorithm which
creates nicer looking thumbnails than the default scaling algorithm.
Store thumbnails as WebP images which compress smaller than PNGs and
fit in the inode better at 128x128.
Check the file's modification time in GetFileIconFromAttr() and compare
it to the thumbnail creation time. If the file has not been modified
since the last time we generated thumbnails return the thumbnail from
the attribute, otherwise fetch a new thumbnail with GetThumbnailIcon().
Add "Generate image thumbnails" Tracker setting. Default is turned off
for now. To generate image thumbnails you must first turn this setting
on in Tracker Windows preferences.
Spawn a get_thumbnail() thread to generate thumbnails and retrieve them
later on from the window thread to fill out into the icon. This should
improve responsiveness of generating thumbnails from a folder with a
lot of images. The generator thread will write the thumbnail data to an
attribute if on writable BFS volume.
If not on writable BFS volume, the generator thread will send the data
back to the original thread through a port by calling write_port().
When the thread is finished creating the thumbnail it sends a message
back to the Tracker application thread to update the pose which
instructs the window thread to look for an thumbnail. It either finds a
thumbnail in an attribute, or picks up the thumbnail data that has been
sent through write_port() using read_port().
This works on both read-write and read-only BFS volumes but it still
depends on the presence of a BEOS:TYPE parameter to have been written
to the volume before it became read-only. Thumbnail generation does not
work on other read-only volumes for example an ISO-9660 CD, but it does
work on read-only BFS volumes for example the BeOS R5 CD.
Move BPrivate::CheckNodeIconHintPrivate() from BNodeInfo to Tracker
Model CheckNodeIconHint(). Create Model::CheckAppIconHint() and look
for a vector icon or mini and large icon in that method. Check that
the base type is directory, volume, trash, desktop, or if executable
call CheckAppIconHint().
Add 1 to temp_name to fix the following warning:
src/kits/tracker/FSUtils.cpp:2437:12: note: 'snprintf' output 3 or more
bytes (assuming 267) into a destination of size 266
Rename temp_name to tempName following our style guidelines. Use
strlcpy() and strlcat() instead of strcpy() to safely copy the string.
This fixes thumbnail generation on 64-bit Haiku.
Change-Id: I7f927a5a1f8cf65e4b1aa1e0eb55bbfae87fd969
Reviewed-on: https://review.haiku-os.org/c/haiku/+/3163
Reviewed-by: John Scipione <jscipione@gmail.com>
Reviewed-by: Adrien Destugues <pulkomandy@gmail.com>
Tested-by: Commit checker robot <no-reply+buildbot@haiku-os.org>
When a translator is uninstalled, BTranslatorPrivate::_RemoveTranslators is
called. This method used to unload the image containing the translator after
calling Release() on it resulting in several problems:
- If the translator was still busy, e.g. translating something while being
installed, it crashed since the image was unloaded even though its refcount
was larger than 0.
- Applications using code from one of the translators (e.g. its config view)
would crash when the translator is uninstalled (this is bug #12005).
This problem is now fixed. The roster keeps track of all translators whose
image it manages (even if the translator was already removed from the roster).
It also keeps a refcount to all images. When a translator's refcount drops to
zero and it belonged to a roster at some point, it does not delete itself, but
notifies the roster that it is ready to destruct, which then removes it from
the roster if the translator is still in it, destroys the translator, decrements
the refcount of the image and if the new refcount is zero, unloads the image.
All of this is done in a message handler, since if the translator called
TranslatorDeleted like before, the unloaded image would be referenced when
the stack is walked up.
Finally, the DataTranslations preflet is required to Acquire() the translator
whose config view it is showing, because otherwise its refcount could be reduced
to 0 and the image unloaded. BTranslatorRoster now enables users to acquire a
translator by ID. By the time the translator has to be released, it might not
be part of the roster anymore though. Since BTranslatorRoster tries not to give
out raw pointers to the translators it manages, users who acquire a translator
through a roster now are given a BTranslatorReleaseDelegate, which allows for
releasing the BTranslator exactly once and then self-destructs.
Signed-off-by: Axel Dörfler <axeld@pinc-software.de>
There were two problems with the last commit:
* the list needed to be outside of the top-level loop.
* BList was just broken for sorting translation_format pointers.
I fixed this by moving the loop outside and converting the translation_formats
to translator_info, which has the translator_id, since that is needed to create
the menu item, and would otherwise be unavailable outside the loop.
I tried to get this working with BList, but the sorting was completely broken,
and converting to BObjectList made the code much, much better and worked great.
Screw BList and casting, hurray templated BObjectList.
Really fixes#6782.
This is used by ShowImage and CodyCam to create a list of image formats which a
file can be saved as. Tracker sorts the image MIME types used in the Find
window by name, so this makes these Save As menus match that (minus the icons
which I think are superfluous.)
Fixes#6782.
If the use of BList is no longer recommended, I welcome better suggestions
for sorting which will work in both GCC2 and GCC4. But this works ;)
* Cleaned up our own headers.
* Moved translator errors into Errors.h.
* Removed extra TranslationKit.h.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@32755 a95241bf-73f2-0310-859d-f6bbb57e9c96
method. Rather reintroduced the method (private) instead.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@30854 a95241bf-73f2-0310-859d-f6bbb57e9c96
* Mesa doesn't compile yet, as some PPC specific stuff seems to be
missing, Philippe?
* Cortex and some other stuff has been marked x86-only, although
it's more of a "GCC 2.95.3"-only.
* I'm not sure if it's a bug in GCC 4, or if that's what the C
standard demands, but sizeof(some_type::some_field) is not
valid anymore :-/
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@17515 a95241bf-73f2-0310-859d-f6bbb57e9c96
class, and only wraps around that one.
* Translating is no longer serialized, you can translate more than one object
at a time now.
* A BTranslator that is released (ie. deleted) will no longer let its BTranslatorRoster
crash.
* Removed BTranslatorRoster::Version() - this kind of call definitely makes no
sense at all. It's still exported from the sources, though, for backwards
compatibility.
* Simplified and improved code.
* Images are now unloaded only once.
* Added new method IsTranslator() that will be used by the DataTranslations preferences
application.
* Began implementing new methods StartWatching()/StopWatching() that will notify
you if new translators are installed or old ones removed (this will also be used
by DataTranslations once it's ready).
* The private BTranslatorRoster class will now add itself to the existing BApplication,
in order to provide automatic updating of the translators if needed (not yet implemented
though).
* Not heavily tested yet, there might be some regressions.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@17247 a95241bf-73f2-0310-859d-f6bbb57e9c96
OBOS BBitmapStream was missing a protected function. I implemented the protected function (SwapHeader) and changed the cl
ass to use it instead of the previous functions that I wrote to provide similar behavior.
git-svn-id: file:///srv/svn/repos/haiku/trunk/current@2406 a95241bf-73f2-0310-859d-f6bbb57e9c96
