changelog

zgv-5.6,一个Linux系统下的图片浏览器(VGA/SVGA)

2002-05-05  Russell Marks  <[e-mail]>

	* Version 5.6.

	* src/modesel.c: added 15/16/24/32-bit 320x240 modes. Thanks to
	Michal Svec for suggesting this. Currently only the 24/32-bit mode
	is selectable directly (using `^', on the assumption that it's
	shift-6 - unshifted 6 selects 320x240x8).

2002-04-15  Russell Marks  <[e-mail]>

	* src/vgadisp.c (draw_rb_menu): if a 32-bit mode existed without a
	corresponding 24-bit mode, and it was one of the modes which are
	listed on the viewer right-button menu, then it was incorrectly
	`greyed out', i.e. made unavailable from the menu. Thanks for
	Dimitar Zhekov for spotting this.

2002-04-07  Russell Marks  <[e-mail]>

	* src/zgv.c: added multi-file delete. This is on `D', by analogy
	with `C' and `M' for copy/move (since it works the same way) - the
	single-file-only delete remains available on the Delete key. A new
	config variable `delete-tagged-prompt' says whether to prompt
	before deleting all tagged files (enabled by default). Thanks to
	Max Drozdoff again, for prodding me into action on this. :-)

2002-03-31  Russell Marks  <[e-mail]>

	* src/zgv.c (delete_file): when using `delete-single-prompt off',
	it previously didn't update the screen after the deletion. Thanks
	to Max Drozdoff for spotting this one.

2001-11-01  Russell Marks  <[e-mail]>

	* src/readgif.c (read_gif_file): in the very unusual case of both
	global and local colourmaps being present, they were applied in
	the wrong order. Thanks to Michal Svec for spotting this.

2001-10-25  Russell Marks  <[e-mail]>

	* src/rcfile.c: removed `--version-svgalib' option, this was
	causing trouble when compiling with old versions of svgalib.

2001-10-24  Russell Marks  <[e-mail]>

	* src/readtga.c (fix16bit): should now support 16-bit RGB files.
	16-bit palette-based files *may* also work now, but are untested -
	it's not all that easy to find samples of these rather unusual
	types of TGA file. Thanks to Michal Svec for spotting the problem.

2001-10-21  Russell Marks  <[e-mail]>

	* src/rcfile.c (usage_help): new `-A' or `--auto-animate' option,
	forces the viewer to automatically animate multiple-image GIF
	files. Thanks to John Fitzgerald for suggesting this (more or
	less). It limits your viewing options greatly, of course (since
	it's like pressing `e' every time you view one, and exiting the
	image when you exit the animation), but can be handy for
	slideshows etc. When this option is enabled, you can use
	Backspace/Enter/Space for file navigation/tagging during an
	animation. (The skip-to-next-frame key (previously Enter) is now
	`n'.)

2001-10-04  Russell Marks  <[e-mail]>

	* Version 5.5.

	* src/Makefile (clean): now removes rcfile_*.h, which are easily
	rebuilt.

	* src/readbmp.c (read_bmp_file): don't implicitly assume function
	calls in expressions are evaluated left-to-right when calculating
	offset.
	(read_bmp_file): fix for progress indicator when using BMP's
	utterly bizarre move-loading-position code which, happily, no-one
	actually seems to use. :-) Thanks to Jakub Bogusz again.

	* src/zgv.c (showhowfar): now ensures sofar is no greater than
	total, rather than assuming caller gives valid input.
	(xv332_how_far): same change as above.

2001-09-30  Russell Marks  <[e-mail]>

	* src/zgv.c (recursive_update): recursive thumbnail update, ported
	from xzgv.

2001-09-29  Russell Marks  <[e-mail]>

	* src/zgv.c: renamed "Show filename" menu item to "Show file
	info".

	* src/3deffects.c (msgbox): rewritten file-details dialog, now
	gives more info and looks rather better. (Based on the one xzgv
	has.)

	* src/zgv.c (makexv332): now generates correct height comment for
	animated GIFs.
	(showgifdir): no longer undraws/redraws scrollbar unnecessarily
	during thumbnail update.

	* src/readbmp.c (read_bmp_file): fixed many, many places where it
	could leak a file descriptor on failing to load an image.
	(read_bmp_file): fixed RLE corruption and possible segfault.
	Thanks to Jakub Bogusz for the patch.
	(read_bmp_file): added bounds-checking, which should catch
	problems with corrupt files. There was a definite chance of a
	local DoS previously (given a maliciously-corrupted file). Thanks
	to Jakub Bogusz again for pointing this out. Ghod, I hadn't
	realised the BMP format was so evil as to have a `move current
	position' thing... ugh... :-(
	(read_bmp_file): 8-bit non-RLE was reading a full line, rather
	than only the valid pixels in it, which corrupted the edges -
	fixed.

2001-09-22  Russell Marks  <[e-mail]>

	* src/zgv.c (inithowfar): now uses drawbutton(). Removed inner
	bevel. Changed old "Decompressing" text to "Reading".

	* src/scrollbar.c: now uses drawbutton() to draw arrow buttons and
	slider.

	* src/3deffects.c (drawbutton): all `buttons' are now drawn in a
	GTK+-ish manner, and thus no longer look so crap. :-)

	* src/helppage.c (showhelp): dropped the decidedly unhelpful `3D'
	text in help pages, they just draw normal text now.

	* src/scrollbar.c (draw_scrollbar_main_empty): halved
	empty-scrollbar `depth'. Makes more sense :-), and makes it a bit
	clearer.

	* src/zgv.c: redesigned selector screen somewhat. The logo is
	gone, replaced with something nearer to a `title bar', and the
	directory name moves there. The inner bevels around blocks of
	screen are gone. Along with making the longest displayable
	filename a tiny bit shorter (half-a-char on average), this means
	that the default display shows 5x4 thumbnails rather than 4x3. The
	scrollbar is now enabled by default whether you're using a mouse
	or not, to make your position in the file list clearer. The
	fullscreen-selector toggle (on `f' and `z') is gone, as is the old
	`fullsel' option which matched it (it now gives a warning).

	* src/vgadisp.c (redrawgif): scaling up previously drew an entire
	line unnecessarily for images which remained smaller than the
	screen when scaled up - fixed.

	* doc/sample.zgvrc: converted to use new option names. Also
	tweaked the layout slightly.

2001-09-20  Russell Marks  <[e-mail]>

	* src/rcfile.c (parsecommandline): added GNU-style long-option
	support, and changed/reorganised config file option names to suit
	this; see `Invoking zgv' in info file or `OPTIONS' in man page.
	Essentially things are a lot more xzgv-like now. That said, most
	old option names are still supported in config files, so it
	shouldn't break things.
	(defaultcfg): removed `hicontrol' option; being able to disable it
	was always of questionable value with it being such an obviously
	Good Thing. zgv now always acts as if the option were enabled
	(i.e. no change in default behaviour), and gives a warning if the
	option is mentioned. Also removed `hicolmodes', which has long
	been obsolete, with a similar warning if it's seen.
	(parsecommandline): the `centre' setting can no longer be toggled
	on the command-line with the `-c' option. (But now you can use
	`--centre=off' to disable it.)

	* src/vgadisp.c (animate_gif): now supports animation with the
	same orientation as the normal picture. (So for example you can
	flip the picture, and the animation will be of similarly flipped
	frames.)
	(showgif): optional black background in 8-bit modes, disabled by
	default (use the `black-background' config file option to enable).
	It works by swapping the nearest-to-black palette index with the
	zero index, and altering the in-memory image to match. This can be
	rather nice for consistency with high-colour images, but means
	8-bit images can take longer to appear.
	(animate_gif): animating in zoom mode no longer pointlessly clears
	the screen for each frame.

	* doc/zgv.texi (Supported File Formats): the default location of
	rgb.txt changed some time back, updated the mention here.

2001-09-18  Russell Marks  <[e-mail]>

	* src/vgadisp.c: made repeat_sig a volatile int, though in
	practice I seem to have got away with this before. :-)
	(animate_gif): GIF animation speed is now much, much more
	accurate; it previously tended to run rather slowly.

	* src/vgadisp.c (showgif): didn't previously do the required
	redraw when toggling fakecols (with `F') when in 16-colour mode.

	* src/3deffects.c (msgbox): message boxes can now pop up over the
	existing viewer screen in most cases (i.e. in any mode which is
	640x480 or higher), using much the same approach as the mouse menu
	does. This means that e.g. doing `:' in the viewer to get file
	info generally doesn't need a mode switch any more.

2001-09-09  Russell Marks  <[e-mail]>

	* src/readgif.c (outputstring): broken GIFs could overrun a buffer
	previously - fixed. Any DoS exploit would have been rather
	non-trivial, as it was a static buffer with overruns `carefully'
	limited to 12k. (Yes, this was a weird one... :-))

2001-07-21  Russell Marks  <[e-mail]>

	* src/zgv.c (showerrmessage): fixed buffer overrun. The source
	string was from JPEG/PNG library error messages, though, so in
	practice I doubt any DoS exploit was possible.

	* SECURITY: slight correction - you don't have to own the console
	to run zgv if you're running as root. Doesn't really make any
	difference to what I was saying given the context, but worth
	getting it right.

	* src/zgv.c (rename_file): used to implicitly rely on the buffer
	used in 3deffects.c's cm_getline() being exactly 256 bytes to
	avoid a buffer overrun. This did happen to work (since it *is*),
	but, yuck. Fixed that, and took the opportunity to avoid some
	duplicated code, too.

2001-06-30  Russell Marks  <[e-mail]>

	* Version 5.4.

	* Changed email address most places to my svgalib.org one.

2001-06-21  Russell Marks  <[e-mail]>

	* src/3deffects.c (msgbox): now only changes mode for error if it
	has to (thanks to Wim Osterholt for spotting this). There's little
	real benefit in this change at the moment, but it makes it
	consistent with mode change behaviour elsewhere, and will be
	useful if it's ever changed to try and stick in the same mode
	where possible (as it really ought to...).

2001-06-13  Russell Marks  <[e-mail]>

	* src/vgadisp.c (setmode_or_clear): previously set the mode to
	`curvgamode' rather than `newmode' - fixed that. But luckily, it's
	always been called with newmode==curvgamode. :-)

2001-06-04  Russell Marks  <[e-mail]>

	* src/rcfile.c (getbool): now allows `1' and `0' as alternatives
	to `on'/`off' and `yes'/`no' for boolean option setting. Also made
	the documentation a bit clearer about how bools can be set. Thanks
	to Johannes Zellner for indirectly noticing the problem.

	* src/zgv.c (ispicture): you can now optionally use magic-number
	testing to choose which files to list in the selector (Alt-m
	toggles it, and `fsmagic' is the relevant config file var). This
	approach is much slower, but useful when you have files lacking
	extensions. Thanks to Dank