2004-02-19 Michael Natterer <mitch@gimp.org>
* app/core/gimpimage-qmask.c (gimp_image_get_qmask): new function
which returns the image's QMask.
* app/core/gimpimage.c (gimp_image_channel_name_changed)
* app/gui/qmask-commands.c (qmask_query_response): use it.
2004-02-19 Michael Natterer <mitch@gimp.org>
* app/core/gimp.[ch]: added new signal "buffer_changed" and new
function gimp_set_global_buffer() which emits it when the global
buffer changes.
* app/core/gimp-edit.c (gimp_edit_extract): use it instead
of fiddling with gimp->global_buffer manually.
* app/gui/image-menu.c: connect to "buffer_changed" and set the
"Paste" menu entries sensitive. Fixes bug #134752.
(image_menu_update): changed accordingly. Also changed a lot of
buggy SET_SENSITIVE() lines which made menu items which work fine
on any drawable insensitive when there were no layers (instead
of no drawable).
* app/gui/edit-commands.c: added new macro return_if_new_drawable()
and use it instead of return_if_no_image() so we don't run
into assertions if there is no active drawable.
(cut,copy_named_buffer_callback): unfortunately had to introduce
two new translated messages about not being able to cut/copy when
there is no active drawable.
2004-02-18 Simon Budig <simon@gimp.org>
* app/config/gimpguiconfig.[ch]
* app/config/gimprc-blurbs.h: Added new GUI option: snapping distance
* app/gui/preferences-dialog.c: add a preferences widget
* app/tools/gimpmovetool.c
* app/display/gimpdisplayshell.c: use it for snapping.
2004-02-18 Michael Natterer <mitch@gimp.org>
Some code review:
* app/config/gimpconfig-deserialize.c
* app/config/gimpconfig-serialize.c: removed obsolete code which
made sure serialize_property()/deserialize_property() are only
called for properties of the correct class. We do it the right way
for quite a while now and clear the inherited function pointers in
gimp_config_iface_base_init().
* app/config/gimprc.c (gimp_rc_dispose): don't forget to chain up.
* app/base/gimplut.c
* app/base/lut-funcs.c
* app/config/gimpconfig-deserialize.c
* app/config/gimpconfig-serialize.c
* app/config/gimpconfig-types.c
* app/config/gimprc.c
* app/core/gimp-modules.c
* app/core/gimpbrush.c
* app/core/gimpcontainer.c
* app/core/gimpdocumentlist.c
* app/core/gimpitem.c
* app/gui/about-dialog.c
* app/gui/color-notebook.c
* app/gui/gui.c
* app/gui/tips-dialog.c
* app/paint/gimppaintcore.c
* app/paint-funcs/paint-funcs.c
* app/widgets/gimpcolorpanel.c
* app/widgets/gimpcontainergridview.c
* app/widgets/gimpcontainermenuimpl.c
* app/widgets/gimpselectioneditor.c: removed I/O includes from
files which don't use lowlevel APIs any more. Also removes
a whole bunch of G_OS_WIN32 special casing. Removed trailing
whitespace. Misc tiny cleanups.
2004-02-17 Michael Natterer <mitch@gimp.org>
Make sure each GimpItem emits "removed" when it is removed from
the image so dialogs have a chance to close themselves:
* app/core/gimplayer.c (gimp_layer_apply_mask): emit "removed"
from the mask.
(gimp_layer_removed): new function which emits "removed" from
the layer's mask when the layer gets removed from the image.
* app/core/gimpimage.c (gimp_image_dispose): emit "removed"
from all layers, channels and vectors.
* app/gui/layers-commands.c (layers_scale_layer_query)
(layers_resize_layer_query): removed recently added connections to
"removed" because GimpViewableDialog does this automatically.
2004-02-14 Michael Natterer <mitch@gimp.org>
Fixed lots of QuickMask brokenness by letting the image adjust
its qmask_state automatically:
* app/core/gimpimage-qmask.h: #define GIMP_IMAGE_QMASK_NAME "Qmask".
Use the define in all files below.
* app/core/gimpimage.[ch]: split gimp_image_drawable_add,_remove()
into separate handlers for layers and channels. Added a
"name_changed" handler for all channels. In the channel "add",
"remove" and "name_changed" handlers, check if it was a channel
named "Qmask" that was added, removed or renamed and call
gimp_image_set_qmask_state() accordingly.
* app/core/core-enums.[ch]
* app/core/gimpimage-undo-push.[ch]
* app/core/gimpundo.c: removed all Qmask undo code because the image
does the right thing without undo interaction now.
* app/core/gimpimage-qmask.c (gimp_image_set_qmask_state): set
gimage->qmask_state early so we can return early when called
recursively. Removed calls to gimp_image_undo_push_image_qmask().
Returned "removed" callback (it was utterly broken the way it was
implemented).
* app/display/gimpdisplayshell-callbacks.c
(gimp_display_shell_qmask_toggled): check if the image's
qmask state needs to be changed before changing it.
* app/xcf/xcf-load.c (xcf_load_channel): removed code which
recognized the qmask. GimpImage does this automatically now.
* app/gui/qmask-commands.c: cleanup.
* app/widgets/gimpimagedock.c (gimp_image_dock_constructor):
destroy the "/Select/By Color" and "/Select/Toggle QuickMask" menu
items.
* app/widgets/image-menu.c (image_menu_update): changed accordingly.
2004-02-09 Michael Natterer <mitch@gimp.org>
* app/gui/gui.c (gui_libs_init): added runtime check for
fontconfig > 2.2.0 and abort with a dialog box telling the
user to upgrade fontconfig if the requirement is not met.
Fixes all bugs like #133818.
2004-02-07 Hans Breuer <hans@breuer.org>
* gimpdefs.msc : new file to keep common definitions for the msc build
* **/makefile.msc : use common defintions, e.g. GIMP_VER
* Makefile.am : add the former to EXTRA_DIST
2004-02-05 Michael Natterer <mitch@gimp.org>
Disallow editing of data objects which have no save functionality.
Also fixed the misassumption that "deletable" is always equal to
"writable". Fixes bug #133456.
* app/core/gimpdata.[ch]: added a "deletable" property which is
always equal to "writable" except when the data class does not
implement GimpData::save() (then deletable may be TRUE but
writable is always FALSE).
* app/gui/brushes-menu.c
* app/gui/gradients-menu.c
* app/gui/palettes-menu.c
* app/gui/patterns-menu.c
* app/widgets/gimpdatafactoryview.c: look at data->deletable when
setting the sensitivity of the "Delete" buttons and menu items.
* app/widgets/gimpdatafactoryview.c
(gimp_data_factory_view_tree_name_edited): rename the data
only if it's writable and restore the old name otherwise.
* app/widgets/gimpdataeditor.c: no need to look at data->internal
for figuring if the data is editable, data->editable is enough.
All files above: s/writeable/writable/g
* app/widgets/gimpbrusheditor.c (gimp_brush_editor_set_data):
simplified.
2004-02-05 Michael Natterer <mitch@gimp.org>
* app/core/gimpimage-crop.c: removed trailing whitespace.
* app/gui/debug-commands.[ch]
* app/gui/toolbox-menu.c: renamed ENABLE_DEBUG_ENTRIES to
ENABLE_DEBUG_MENU and #define it to be equal to GIMP_UNSTABLE.
2004-02-04 Sven Neumann <sven@gimp.org>
* app/gui/image-menu.c (image_menu_entries): added percentages to
the View->Zoom menu entries as suggested in bug #131563.
2004-02-03 Sven Neumann <sven@gimp.org>
* app/gui/image-menu.c (image_menu_set_zoom): don't mark weird
format strings as translatable.
* data/misc/gimp.desktop.in.in (_Name): use "The GIMP" without an
"(unstable)" suffix. Should give translators the chance to update
their translations before the final 2.0 release.
* configure.in: removed now unused GIMP_VISIBLE_NAME variable.
2004-01-31 Michael Natterer <mitch@gimp.org>
Use the global <Image> accel_group in all docks except the
toolbox (the latter needs GTK+ 2.4's new menu features).
Addresses bug #119878:
* app/gui/buffers-commands.c
* app/gui/channels-commands.c
* app/gui/data-commands.c
* app/gui/documents-commands.c
* app/gui/drawable-commands.c
* app/gui/edit-commands.c
* app/gui/file-commands.c
* app/gui/gradients-commands.c
* app/gui/image-commands.c
* app/gui/layers-commands.c
* app/gui/plug-in-commands.c
* app/gui/select-commands.c
* app/gui/tool-options-commands.c
* app/gui/tools-commands.c
* app/gui/vectors-commands.c
* app/gui/view-commands.c: changed the various return_if_no_foo()
macros to also accept a GimpDock as user_data.
* app/gui/image-menu.c (image_menu_update): don't update the
display related menu items if they don't exist (see below).
* app/gui/gui.c (gui_display_changed): simplified.
* app/widgets/gimpimagedock.[ch]: create an "<Image>" item_factory
and attach its accel_group to the dock. Destroy all display
related menu items. Destroy the layer stack navigation items
because their default shortcuts interfere with tree and grid view
keybindings. Connect to "image_changed" of the dock's private
context and to "flush" of the image container to update the
item_factory's state.
2004-01-31 Michael Natterer <mitch@gimp.org>
* app/core/gimpimage-convert.[ch]: use gboolean instead of gint
for "alpha_dither" and "remove_dups" in all public and private
functions. Properly prototyped private functions. Minor cleanup.
* app/gui/convert-dialog.c: pass FALSE instead of 0.
* tools/pdbgen/pdb/convert.pdb: ditto. Also cleaned up a bit: use
generated checks and documentation for enums, removed duplicate
check for enum range (spotted by Kevin Cozens).
* app/pdb/convert_cmds.c
* libgimp/gimpconvert_pdb.c: regenerated.
2004-01-29 Simon Budig <simon@gimp.org>
* app/display/gimpdisplayshell.[ch]: Store the zoom factor as
float, not as a ratio.
* app/display/gimpdisplayshell-scale.[ch]: change the API to
expose the Float instead a weirdly encoded integer. Implement
functions to get a ratio from the scale factor. Implement a set
as presets as discussed on the mailinglist. Changed Zoom->Other
dialog to enable entering a float.
* app/display/gimpdisplayshell-title.c
* app/display/gimpnavigationview.c
* app/gui/image-menu.c
* app/gui/info-window.c
* app/tools/gimpmagnifytool.c: changed accordingly.
* app/core/gimp.[ch]
* app/display/gimpdisplay.[ch]
* app/gui/gui-vtable.c
* app/widgets/widgets-enums.h: Made the various display-creating
functions accept a float for the scale. Introduce a new
GimpZoomType: GIMP_ZOOM_TO. Generally adjust the API to use
floats instead of weird integers.
* app/core/gimp-edit.c
* app/core/gimptemplate.c
* app/display/gimpdisplayshell-callbacks.c
* app/file/file-open.c
* app/gui/image-commands.c
* app/gui/view-commands.[ch]
* tools/pdbgen/pdb/display.pdb
* app/widgets/gimpimageview.c
* app/widgets/gimptoolbox-dnd.c: changed accordingly
* app/pdb/display_cmds.c: regenerated
2004-01-28 Michael Natterer <mitch@gimp.org>
Added infrastructure to make sure we don't write to the global
brush, pattern etc. directories. Needed to make this configurable
because we can't rely on the global directories being read-only,
having certain names or being otherwise detectable at runtime in a
sane way. Fixes bug #132214.
* libgimpbase/gimpdatafiles.[ch]: added "const gchar *dirname" to
the GimpDataFileData struct so callbacks don't need to call
g_path_get_dirname() for each file.
* libgimpwidgets/gimpfileentry.c: made it work with non UTF-8
encoded filenames.
* libgimpwidgets/gimppatheditor.[ch]: ditto. Added GUI and API for
setting/getting a second "writable_path". The widget makes sure
that the writable_path is always a subset of the path.
* app/config/gimpconfig-utils.[ch]: added new function
gimp_config_build_writable_path().
* app/config/gimpcoreconfig.[ch]: added separate properties for
the writable brush, pattern, gradient, palette and font paths.
* app/config/gimprc-blurbs.h: added (still empty) blurbs for the
new properties.
* app/core/gimpdata.[ch] (gimp_data_set_filename): added parameter
"gboolean writable". Set data->writable to FALSE by default. If
"writable" is passed as TRUE, still check if we can write to the
file before setting data->writable to TRUE.
(gimp_data_create_filename): changed "data_path" parameter to
"dest_dir" and assume dest_dir is writable.
(gimp_data_duplicate): set data->dirty to TRUE to make sure
duplicated things will be saved.
* app/core/gimpbrush.c
* app/core/gimpbrushgenerated.c
* app/core/gimpbrushpipe.c
* app/core/gimpgradient.c
* app/core/gimppalette.c
* app/core/gimppattern.c: don't set the data's filename and don't
touch data->dirty in the _load() functions because that's done by
the data factory now. Don't touch data->dirty in the _duplicate()
functions because that's done by gimp_data_duplicate() itself now.
* app/core/gimpdatafactory.[ch] (gimp_data_factory_new): added
"writable_property_name" and remember it.
Added utility function gimp_data_factory_get_save_dir() which
determines the directory to save new datas to.
Added public function gimp_data_factory_data_save_single() which
saves a single data object.
Make sure new things get saved to the first writable directory
as specified in preferences.
* app/core/gimp.c (gimp_real_initialize): pass the writable_paths'
property names to gimp_data_factory_new().
* app/widgets/gimpdataeditor.c (gimp_data_editor_save_dirty): use
gimp_data_factory_data_save_single() instead of implementing
saving here.
* app/widgets/gimppropwidgets.[ch] (gimp_prop_path_editor_new):
added "const gchar *writable_property_name" parameter (can be
NULL).
Added the needed callbacks to handle the writable_path and made
the path_editor and file_entry code aware of non UTF-8 filename
encodings. Some general cleanup.
* app/gui/preferences-dialog.c: changed accordingly.
2004-01-28 Michael Natterer <mitch@gimp.org>
* app/widgets/gimphelp-ids.h: updated help IDs for new/reordered
pages in the prefs dialog.
* app/gui/preferences-dialog.c (prefs_dialog_new): changed
accordingly.
2004-01-27 Michael Natterer <mitch@gimp.org>
* app/gui/layers-commands.c (layers_add_mask_query): use the
new GIMP_STOCK_LAYER_MASK icon for "Add Layer Mask" dialog.
2004-01-27 Michael Natterer <mitch@gimp.org>
* app/gui/image-menu.c (image_menu_entries)
* app/gui/layers-menu.c (layers_menu_entries): use the new
GIMP_STOCK_LAYER_MASK icons for "Add Layer Mask".
2004-01-27 Michael Natterer <mitch@gimp.org>
* themes/Default/images/Makefile.am
* themes/Default/images/stock-layer-mask-16.png
* themes/Default/images/stock-layer-mask-24.png
* themes/Default/images/stock-layer-mask-32.png
* themes/Default/images/stock-layer-mask-48.png
* themes/Default/images/stock-selection-border-16.png
* libgimpwidgets/gimpstock.[ch]: added forgotten layer mask and
new "border selection" icons from Jimmac (-32 and -48 ones to be
updated, they are currently copies of the channel icons).
* app/core/gimplayermask.c (gimp_layer_mask_class_init)
* app/gui/image-menu.c (image_menu_entries): use them.
2004-01-26 Michael Natterer <mitch@gimp.org>
* app/gui/image-menu.c (image_menu_entries): use
GIMP_STOCK_FLOATING_SELECTION for "Select->Float".
(image_menu_update): set "Layer->Merge Down" insensitive for the
bottom layer.
2004-01-25 Sven Neumann <sven@gimp.org>
* app/gui/info-window.c (info_window_create): don't update the fields
here...
* app/gui/view-commands.c (view_info_window_cmd_callback): ... but
here when the info window is connected to the display shell. Patch
from Shlomi Fish; fixes bug #132329.
* app/gui/info-window.c (info_window_update_extended): fixed update
of info window in automatic mode. Bug #118084, patch by Shlomi Fish.
* autogen.sh: check for automake-1.8 also.
* HACKING: note that automake-1.8 should work as well.
2004-01-23 Michael Natterer <mitch@gimp.org>
* app/app_procs.c
* app/errors.c
* app/main.c
* app/config/gimpconfigwriter.c
* app/core/gimpdata.c
* app/core/gimpdatafactory.c
* app/gui/user-install-dialog.c
* app/plug-in/plug-ins.c
* app/vectors/gimpvectors-import.c: some more gimp_filename_to_utf8().
* libgimp/gimp.c
* libgimpmodule/gimpmodule.c
* libgimpmodule/gimpmoduledb.c: use it here, too, now that is in
libgimpbase.
2004-01-22 Michael Natterer <mitch@gimp.org>
* app/core/gimpitem.[ch]: added "gboolean use_default_values"
to GimpItem::stroke().
* app/core/gimpselection.c: changed accordingly.
* app/core/gimpchannel.c
* app/vectors/gimpvectors.c: if use_default_values is TRUE, don't
use the GimpPaintOptions passed in the GimpPaintInfo, but create a
new one.
* app/gui/stroke-dialog.c: pass FALSE so the values as set in the
tool options are used.
* tools/pdbgen/pdb/edit.pdb
* tools/pdbgen/pdb/paths.pdb: pass TRUE so tool options settings
don't affect PDB stroke calls. Fixes part 2 of bug #132145.
* app/pdb/edit_cmds.c
* app/pdb/paths_cmds.c: regenerated.
2004-01-22 Simon Budig <simon@gimp.org>
* app/gui/dialogs-commands.c: replaced the indexed palette in
the default "Layers, Channels, Paths"-Dock (as created by the
menu in the toolbox) with the Undo History, since the indexed
palette is pretty useless most of the time and the new setup
at least matches the upper half of the dockable that comes up
after a new user starts the Gimp the first time.
2004-01-21 Tor Lillqvist <tml@iki.fi>
* app/gui/themes.c (themes_list_themes_foreach): Fix undefined
behaviour. Fixes crash in bringing up the Preferences dialog when
compiled with Sun's compiler.
2004-01-21 Michael Natterer <mitch@gimp.org>
* app/gui/info-dialog.[ch]: renamed info_dialog_popdown() to
info_dialog_hide() and info_dialog_popup() to info_dialog_present().
Added info_dialog_show() which just shows the dialog without
calling gtk_window_present().
* app/gui/info-window.c
* app/gui/view-commands.c
* app/tools/gimptransformtool.c: changed accordingly.
* app/tools/gimpcroptool.c
* app/tools/gimpperspectivetool.c
* app/tools/gimprotatetool.c
* app/tools/gimpscaletool.c
* app/tools/gimpsheartool.c: use info_dialog_show() so the dialog
doesn't grab the focus away from the canvas. Fixes bug #132041.
2004-01-20 Michael Natterer <mitch@gimp.org>
* app/gui/file-open-menu.c
* app/gui/file-save-menu.c
* app/gui/image-menu.c
* app/gui/menus.c
* app/gui/plug-in-menus.c: when dynamically creating menu entries,
pass static_entry == FALSE to gimp_item_factory_create_item() so a
*copy* of the the help_id is attached to the menu item.
Fixes help for plug-in menu entries.
2004-01-19 Sven Neumann <sven@gimp.org>
* app/*/*.c: include "libgimpbase/gimpbase.h" where needed; removed
now unnecessary inclusions of "file/file-utils.h".
2004-01-19 Sven Neumann <sven@gimp.org>
* app/file/file-utils.[ch]: removed file_utils_filename_to_utf8() ...
* libgimpbase/gimputils.[ch]: ... and added it here as
gimp_filename_to_utf8(). Added some docs that promise less than
the current implementation holds so that we can change the
implementation later.
* app/*/*.c: use gimp_filename_to_utf8() where
file_utils_filenames_to_utf8() has been used before.
* libgimpbase/gimpbase.def: changed accordingly.
* configure.in: reset GIMP_INTERFACE_AGE.
2004-01-18 Michael Natterer <mitch@gimp.org>
* app/gui/resize-dialog.c: when scaling an indexed image/layer,
add a label telling the user that indexed layers are always scaled
without interpolation. Can't simply make the option menu
insensitive because channels and layer masks are still scaled with
the chosen interpolation type. Fixes bug #131779.
2004-01-18 Michael Natterer <mitch@gimp.org>
* app/core/gimpimage.c (gimp_image_add_layer,remove_layer): in the
spirit of the fix for bug #131721 below, don't try to figure
manually if "alpha_changed" needs to be emitted but simply compare
the old and new values of gimp_image_has_alpha().
* app/gui/preferences-dialog.c (prefs_dialog_new): follow
"foo-window-type" -> "foo-window-hint" change.
2004-01-18 Simon Budig <simon@gimp.org>
* app/gui/about-dialog.c: make sure we always properly use
the size of the logo image. Place the text at the bottom
of the image when the size changes (position of the version
string needs to be adjusted manually still...).
* data/images/gimp_logo.png: slightly tweaked.
* data/images/gimp1_0_logo.png: added for historical reasons.
2004-01-18 Sven Neumann <sven@gimp.org>
* app/gui/file-open-dialog.c (file_open_create_thumbnail): redone
to make it work again.
* libgimpthumb/gimpthumbnail.c (gimp_thumbnail_load_thumb): fixed
stupid mistake that caused thumbnails not to load under certain
circumstances.
2004-01-16 Michael Natterer <mitch@gimp.org>
* app/gui/edit-commands.[ch]: converted tabs to spaces.
(cut,copy_named_buffer_callback): unref the buffer after adding it
to gimp->named_buffers. Seems we leaked all named buffers...
Removed code duplication I have just introduced:
* app/gui/edit-commands.[ch] removed
edit_paste_into_cmd_callback(). Instead, pass the "paste_into"
boolean as "guint action" to gimp_edit_paste_cmd_callback().
* app/gui/image-menu.c: changed accordingly.
* app/widgets/gimpbufferview.c: added utility function
gimp_buffer_view_paste() and call it from the paste and paste_into
callbacks.
2004-01-15 Pedro Gimeno <pggimeno@wanadoo.es>
* app/gui/file-save-menu.c (file_save_menu_update): Removed the
code that disables save formats conditionally, making all of
them available. Fixes bug #110610.
2004-01-15 Michael Natterer <mitch@gimp.org>
Fixed bug #78732 (don't paste off screen):
* app/display/gimpdisplayshell-transform.[ch]: added new function
gimp_display_shell_untransform_viewport() which returns the
visible rectangle of the image in image coordinates.
* app/core/gimp-edit.[ch] (gimp_edit_paste): added viewport
parameters and changed positioning of the pasted layer as follows:
- if there is a selection, center on the selection (just as before).
- if there is no viewport, center on the active drawable.
- if the viewport intersects with the active drawable, center
on the intersection.
- if the viewport does *not* intersect with the active drawable,
center on the active drawable (off-screen, but better than pasting
something that will be invisible due to floating selection clipping).
- if there is no active drawable, center on the viewport.
- if there is no active drawable and no viewport, center on the image.
* app/widgets/gimpbufferview.c (gimp_buffer_view_paste_clicked)
(gimp_buffer_view_paste_into_clicked)
* app/display/gimpdisplayshell-dnd.c (gimp_display_shell_drop_buffer)
* app/gui/edit-commands.c (edit_paste_cmd_callback)
(edit_paste_into_cmd_callback): ask the shell for the viewport
and pass it to gimp_edit_paste().
* app/display/gimpdisplayshell-dnd.c
(gimp_display_shell_drop_drawable): center the created layer on
the viewport.
* app/tools/gimpmovetool.c (gimp_move_tool_button_release): use
gimp_display_shell_untransform_viewport() (its code was taken from
here).
* tools/pdbgen/pdb/edit.pdb: pass "no viewport" to gimp_edit_paste().
* app/pdb/edit_cmds.c: regenerated.
2004-01-14 Tor Lillqvist <tml@iki.fi>
* app/file/file-utils.[ch]: Add new function
file_utils_filename_to_utf8(), which is to be used when converting
file names (which are kept in the on-disk encoding) to UTF-8 for
passing to GTK, or to g_print() etc.
* app/*/*.c: Call file_utils_filename_to_utf8(). Should fix most
of the warnings generated by non-UTF8 pathnames. See #130118.
* libgimpbase/gimpenv.b: Document that gimp_directory() etc return
strings in the on-disk encoding.
* libgimpmodule/gimpmodule.c: Convert filenames to UTF-8 (using
g_filename_to_utf8()) before passing to g_print().
2004-01-13 Simon Budig <simon@gimp.org>
* data/images/gimp_logo.png: New image for the about dialog by
Jakub Steiner.
* app/gui/about-dialog.c: Adjusted to new image. Also could not
resist to add a fancy effect...
* data/images/gimp1_2_logo.png: Saved the image from 1.2.
2004-01-13 Michael Natterer <mitch@gimp.org>
Allow invoking the text tool by double clicking a text layer in
the layers dialog, just like the path tool is invoked when double
clicking a path.
* app/tools/gimptexttool.[ch]: added empty
gimp_text_tool_set_layer() stub. Sven, your turn...
* app/gui/layers-commands.[ch]: added layers_text_tool() which
invokes the text tool on text layers and falls back to
layers_edit_layer_query() otherwise.
Added layers_text_tool_cmd_callback() for the layers menu.
* app/gui/layers-menu.c: added "Text Tool" menu item and hide
it for layers which are no text layers.
* app/gui/dialogs-constructors.c (dialogs_layer_list_view_new):
use layers_text_tool() as "activate" function.
