In the selection tools, when the selected operation is invalid,
i.e., when trying to subtract-from or intersect-with an empty
selection, blink the selection-mode box widget in the tool options,
in addition to showing an error message in the status bar, to hint
at the source of the error.
(cherry picked from commit f990e41609)
2009-01-17 Michael Natterer <mitch@gimp.org>
* all files with a GPL header and all COPYING files:
Change licence to GPLv3 (and to LGPLv3 for libgimp).
Cleaned up some copyright headers and regenerated the parsers in
the ImageMap plugin.
svn path=/trunk/; revision=27913
2008-03-09 Michael Natterer <mitch@gimp.org>
* app/tools/Makefile.am
* app/tools/gimpiscissorsoptions.[ch]
* app/tools/gimpregionselectoptions.[ch]: new options classes.
* app/tools/gimpselectionoptions.[ch]: remove the options here.
Also remove some leftover rectangle options cruft that is in its
own files since long ago.
* app/tools/gimpbycolorselecttool.c
* app/tools/gimpfuzzyselecttool.c
* app/tools/gimpiscissorstool.[ch]
* app/tools/gimpregionselecttool.[ch]
* app/widgets/gimpselectioneditor.c: changed accordingly.
svn path=/trunk/; revision=25071
2006-10-18 Michael Natterer <mitch@gimp.org>
Applied modified patch from Martin Nordholts which adds a "Rounded
Corners" option to the rectangle select tool. Fixes bug #86279.
* app/core/gimpchannel-combine.[ch]: added
gimp_channel_combine_ellipse_rect(). Use it from
gimp_channel_combine_ellipse().
* app/core/gimpchannel-select.[ch]: added
gimp_channel_select_round_rect()
* app/tools/gimprectangleselectoptions.[ch]: added properties
"round-corners" and "corner-radius" and GUI for the new propeties.
* app/tools/gimprectangleselecttool.h: added macro
GIMP_RECT_SELECT_TOOL_GET_OPTIONS().
* app/tools/gimprectangleselecttool.c (gimp_rect_select_tool_draw):
draw round corners if enabled.
(gimp_rect_select_tool_real_select): use
gimp_channel_select_round_rect() if enabled.
* app/tools/gimpselectionoptions.[ch]: added "antialias_toggle"
to the GimpSelectionOptions struct so the rect select options
can set its sensitivity.
Unrelated:
* app/tools/gimpellipseselecttool.c (gimp_ellipse_select_tool_draw):
use 360 * 64 instead of 23040.
2006-08-05 Michael Natterer <mitch@gimp.org>
Applied (modified and enhanced) patch from Chris Moller which allows
tools to distinguish similar colors not only by composite, but also
by R, G, B, H, S and V. Fixes bug #348291.
* app/core/core-enums.[ch]: added new enum GimpSelectCriterion
which can be one of { COMPOSITE, R, G, B, H, S, V }.
* app/core/gimpimage-contiguous-region.[ch]: added
select_criterion params and create the region based on difference
by the selected criterion.
* app/core/gimpchannel-select.[ch]
* app/core/gimpdrawable-bucket-fill.[ch]: take criterion params and
pass them through to the contiguous region functions.
* app/tools/gimpbucketfilloptions.[ch]
* app/tools/gimpselectionoptions.[ch]: added criterion properties
and GUI to select it.
* app/tools/gimpbucketfilltool.c
* app/tools/gimpbycolorselecttool.c
* app/tools/gimpfuzzyselecttool.c: pass the selected criterion to
the resp. core functions.
* app/widgets/gimpdrawabletreeview.c
* app/widgets/gimpselectioneditor.c
* app/display/gimpdisplayshell-dnd.c
* tools/pdbgen/pdb/edit.pdb
* tools/pdbgen/pdb/selection_tools.pdb: changed accordingly
(simply pass GIMP_SELECT_CRITERION_COMPOSITE in most cases).
* app/pdb/edit_cmds.c
* app/pdb/selection_tools_cmds.c: regenerated.
* app/tools/gimprectangletool.c
* app/tools/gimprectangletool.h
* app/tools/gimprectangleoptions.c
* app/tools/gimprectangleoptions.h: new code for base
class for rectangle tools.
* app/tools/gimpnewrectselecttool.[ch]: modified to
derive from GimpRectangleTool.
* app/tools/Makefile.am: modified accordingly
* app/tools/gimpselectionoptions.[ch]: remove stuff
no longer needed by new rect select tool.
This is work in progress.
2003-02-09 Michael Natterer <mitch@gimp.org>
* app/core/gimpcontext.[ch]: simplified everything a lot by
merging the public GimpContextPropType enum with the internal
anonymous object property id enum. Removed the internal copy_prop
functions and handle property copying in a big switch() in
gimp_context_copy_property(). Removed the separate signal
connections for each property of the parent context and do the
same using a single "notify" handler. Emit "notify" signals all
over the place. Removed internal arrays which are no longer
needed due to enum merge and copy_property simplification.
Removed the array of signal names and use g_signal_name().
Removed gimp_context_unset_parent() and allow "parent" being NULL
in gimp_context_set_parent().
* app/tools/tool_manager.c
* app/widgets/gimpdevices.c: changed accordingly.
* libgimptool/gimptooltypes.h: changed GimpToolOptionsGUIFunc to
return a GtkWidget (the created tool options widget).
* libgimptool/gimptoolmodule.c: #include <gtk/gtk.h>
* app/tools/tool_options.[ch]: removed the "main_vbox" from the
GimpToolOptions struct. Changed gimp_tool_options_gui() to create
and return the main_vbox.
* app/tools/tool_manager.c: create the "This Tool has no Options"
label here if NULL was passed as "options_gui_func". Attach the
options widget to the tool_options object using
g_object_set_data().
* app/gui/tool-options-dialog.c: changed accordingly.
* app/tools/gimpairbrushtool.c
* app/tools/gimpblendoptions.[ch]
* app/tools/gimpbucketfilloptions.[ch]
* app/tools/gimpclonetool.c
* app/tools/gimpcolorpickeroptions.[ch]
* app/tools/gimpconvolvetool.c
* app/tools/gimpcropoptions.[ch]
* app/tools/gimpdodgeburntool.c
* app/tools/gimperasertool.c
* app/tools/gimpflipoptions.[ch]
* app/tools/gimpinkoptions.[ch]
* app/tools/gimpmagnifyoptions.[ch]
* app/tools/gimpmeasureoptions.[ch]
* app/tools/gimpmoveoptions.[ch]
* app/tools/gimpselectionoptions.[ch]
* app/tools/gimpsmudgetool.c
* app/tools/gimptextoptions.[ch]
* app/tools/gimptransformoptions.[ch]
* app/tools/gimpvectoroptions.[ch]
* app/tools/paint_options.[ch]: return the options vbox from
all tool_options_gui functions.
2003-01-06 Michael Natterer <mitch@gimp.org>
* libgimptool/gimptoolenums.[ch]: added enum GimpRectSelectMode
which can be one of "free", "fixed-size" and "fixed-ratio".
* app/tools/selection_options.[ch]: replaced the "Fixed Size /
Aspect Ratio" toggle by a menu offering the choices above.
* app/tools/gimprectselecttool.[ch]: changed accordingly. Removed
the possibility to <shift>-switch from "fixed-size" to
"fixed-ratio" mode. Fixes bug #100320.
2002-02-10 Michael Natterer <mitch@gimp.org>
* app/undo.c: removed #if 0'ed old display update hackery. Don't
flush the displays here at all and include nothing from
"display/".
* app/undo_history.c
* app/gui/edit-commands.c: call gdisplays_flush() if undo_pop() or
undo_redo() return TRUE.
* app/core/gimpimage-contiguous-region.[ch]: allow a contiguous
transparent region to be selected/filled (#71058).
* app/core/gimpdrawable-bucket-fill.[ch]
* app/core/gimpimage-mask-select.[ch]: take a boolean
fill_transparent/select_transparent parameter and pass it to the
contiguous region funcion.
* app/display/gimpdisplayshell-dnd.c: pass
fill_transparent == FALSE to bucket_fill_full because we fill the
whole drawable anyway here.
* app/tools/gimpbucketfilltool.c
* app/tools/gimpbycolorselecttool.c
* app/tools/gimpfuzzyselecttool.c
* app/tools/selection_options.[ch]: added toggle buttons to the
tool options and pass the value to the fill and select core
functions.
* tools/pdbgen/pdb/misc_tools.pdb
* tools/pdbgen/pdb/selection_tools.pdb: hardcode
"select_transparent" to FALSE to get the old behaviour. Should
export the new feature to plug-ins however.
* app/pdb/misc_tools_cmds.c
* app/pdb/selection_tools_cmds.c: regenerated.
2001-11-23 Michael Natterer <mitch@gimp.org>
* app/core/gimpcontainer.c: removed a useless g_return_if_fail().
* app/widgets/gimpcontainereditor.h: removed GimpViewType enum.
* app/widgets/widgets-types.h: added it here.
* app/widgets/gimpcontainerview-utils.[ch]: added a utility function
which gets the GimpContainerView out of a GimpDockable.
* app/widgets/gimpdialogfactory.[ch]: added support for saving and
loading of each GimpDockable's preview size. Store the dialog's
default preview size in the GimpDialogFactoryEntry. Pass the
preview_size to each created dialog.
* app/gui/menus.c: added menu items for setting the preview_size
and switching between list and grid view. Removed the item
overkill in the "Add Tab" submenu.
* app/gui/dialogs-commands.[ch]: added callbacks for the new items.
* app/widgets/gimpdockbook.c: set the item's state before showing
the menu.
* app/errors.c
* app/gui/dialogs-constructors.[ch]
* app/gui/dialogs.c
* app/gui/edit-commands.c
* app/gui/gui.c
* app/gui/indicator-area.c
* app/gui/toolbox.c: changed accordingly.
* app/tools/selection_options.[ch]: cleaned up the selection
options and added some tooltips. Much more to do...
2001-11-21 Michael Natterer <mitch@gimp.org>
* app/display/gimpdisplayshell-callbacks.c: key press and release
events were sent swapped to tools.
* app/tools/selection_options.[ch]: added radio buttons for the
selection operation (REPLACE, ADD, ...). Partly fixes#51108.
* app/tools/gimpselectiontool.[ch]: honor the new tool options
stuff. Do evil things in gimp_selection_tool_modifier_key().
* app/tools/gimpbycolorselecttool.[ch]: removed most of the
widgets from the by_color_select window because they are all in
the selection_options now.
* libgimpwidgets/gimpstock.[ch]: added new stock items for the
buttons.
* themes/Default/Makefile.am
* themes/Default/images/Makefile.am
* themes/Default/images/stock-button-selection-add.png
* themes/Default/images/stock-button-selection-intersect.png
* themes/Default/images/stock-button-selection-replace.png
* themes/Default/images/stock-button-selection-subtract.png: new
stock images.
2001-11-20 Michael Natterer <mitch@gimp.org>
* app/tools/tools-types.h: added GimpToolRegisterFunc,
GimpToolRegisterCallback and GimpToolOptionsNewFunc typedefs
which are used to register tools.
* app/tools/tools.c: put the register funcs in an array of
GimpToolRegisterFuncs. Pass a Gimp pointer *plus* a
GimpToolRegisterCallback (which is tool_manager_register_tool())
to the tools' register functions.
* app/tools/tool_manager.[ch]: added a GimpToolOptionsNewFunc to
the parameters of tool_manager_register_tool(). Create the tool
options here, not in each tool.
* app/tools/paint_options.[ch]
* app/tools/selection_options.[ch]
* app/tools/tool_options.[ch]
* app/tools/transform_options.[ch]: all _init() and _new()
functions take a GimpToolInfo pointer now. The _reset() func needs
to be set manually now.
* app/tools/[all_tools].[ch]: changed accordingly:
- pass GimpToolOptionsNewFuncs to the register callback.
- don't create the tool options in the tools' _init() function.
- removed all static tool options variables.
- get the options from the tool system in the cases i missed
in my last commit.
- added minor hacks to get rid of the static options pointer
in some pathological cases :) (i.e. the ink tool).
2001-11-10 Michael Natterer <mitch@gimp.org>
* app/qmask.c: fixed qmask callbacks to check if the toggle is
active before performing any action.
* app/core/core-types.h: added the GimpCoords type here because it
will be used by core functions as soon as the painting stuff is
separated from the painting tools.
* app/core/gimpdrawable-bucket-fill.c: fixed g_return_if_fail()s
to not disable any useful operation :-) Still didn't figure out
how I broke display color and pattern dropping :-(
* app/display/gimpdisplayshell.[ch]: added
gimp_display_shell_[un]transform_coords() which work on two
GimpCoords pointers.
* app/display/gimpdisplayshell-callbacks.c: use the new functions
instead of the gdisplay_* ones.
* app/gui/image-commands.c: GimpImage emits "disconnect", not
"destroy".
* app/tools/tools-types.h
* app/tools/gimptool.h: removed GimpCoords here.
* app/tools/gimpconvolvetool.c: fixed modifier_key() implementation.
* app/tools/gimpcroptool.c: cleanup.
* app/tools/paint_options.c: don't need a separator in the ink
tool options.
* app/tools/gimprectselecttool.c
* app/tools/selection_options.[ch]: implemented wish #50352:
Added "Auto Shrink Selection" and "Sample Merged" toggles to
the rect_select and ellipse_select tools. Put the "Fixed size"
widgets in a frame. Removed the separators after the common
selection tool options because I didn't like them any more
(feel free to comment ;)
2001-08-14 Michael Natterer <mitch@gimp.org>
* app/gdisplay.h: an evil temp_hack which lets GimpContext managing
the active display withoug including "gdisplay.h". Will go away as
soon ad context properties are registered dynamically.
* app/module_db.c: cleaned up the object code in preparation of
moving it to core/.
* app/path.c: connect to GimpImage's
* app/core/gimpobject.[ch]: derive it from GObject, not from
GtkObject any more (yeah :-)
* app/core/*.c: #include <glib-object.h> instead of <gtk/gtk.h>,
removed some remaining GtkObject-isms.
(left in a few #include <gtk/gtk.h> where bigger changes are needed
to get rid of the UI dependency).
* app/core/core-types.h: #include <gdk-pixbuf/gdk-pixbuf.h> here
temporarily.
* app/core/gimp.c (gimp_create_display): unref the image after
creating it's first display.
* app/core/gimpbrush.[ch]: disabled the parts of the code which
depend on GimpPaintTool.
* app/core/gimpbrushgenerated.c
* app/core/gimpbrushpipe.c: changed accordingly.
* app/core/gimpcontext.[ch]: evil hack (see above) to manage the
active display without including "gdisplay.h"
* app/core/gimpimage-mask.[ch]: pass a context to
gimage_mask_stroke() and get the current tool's PDB string from
there.
* app/core/gimpedit.c: changed accordingly.
* app/core/gimpimage.c: use gimp_image_update() instead of
gdisplays_update_full().
* app/gui/color-area.c
* app/gui/colormap-dialog.c
* app/gui/dialogs-constructors.c
* app/gui/edit-commands.c
* app/gui/image-commands.c
* app/gui/toolbox.c: changed accordingly (don't use Gtk methods on
GObjects).
* app/gui/menus.c: fix some const warnings by explicit casting.
* app/tools/*.[ch]: ported all tools to GObject, some minor
cleanup while i was on it.
* app/widgets/gimpdialogfactory.[ch]: ported to GObject.
* app/widgets/gimplayerlistview.h: added FOO_GET_CLASS() macro.
* tools/pdbgen/app.pl: added a "widgets_eek" hack like "tools_eek"
which inserts #include "widgets/widgets-types.h" before ordinary
includes.
* tools/pdbgen/pdb/brush_select.pdb
* tools/pdbgen/pdb/edit.pdb
* app/pdb/brush_select_cmds.c
* app/pdb/edit_cmds.c: changed according to the stuff above.
2001-07-17 Michael Natterer <mitch@gimp.org>
* app/path.[ch]: removed path_to_beziersel() so this file can be
safely included from core/.
* app/tools/gimpbezierselecttool.[ch]: added it here.
* app/core/core-types.h: added a GimpToolOptions typedef. Removes
deps into tools/ and will later be a core object anyway.
* app/tools/tools-types.h: removed the ToolOptions typedef here.
* app/core/gimpimage-duplicate.c
* app/core/gimpimage-mask.c
* app/core/gimpimage.c
* app/core/gimptoolinfo.[ch]: removed deps into tools/, misc stuff.
* app/tools/tool_manager.[ch]: some ugly temp hacks. Please ignore.
* app/widgets/gimpdialogfactory.[ch]: added a "remember_if_open" field
to the GimpDialogFactoryEntry so we can manage dialogs which should
not be re-opened on startup.
* app/gui/dialogs-constructors.c
* app/gui/dialogs.c: register & create all editor dialog with the
"global_dialog_factory".
* app/gui/tool-options-dialog.c
* app/tools/*: s/ToolOptions/GimpToolOptions/
2001-02-23 Michael Natterer <mitch@gimp.org>
* app/app_procs.c: removed crap from ancient times when tools
used to be an enum.
* app/brush_select.[ch]: cleaned up the gui and made global paint
mode toggling much simpler by expanding vertically instead of
reparenting.
* app/context_manager.c: removed hack by using a tool manager
accessor function.
* app/gimpcontext.c: use the new standard tool info object. Tools
also _behave_ like all other data types now (can e.g. be
refreshed).
* app/tools/tool.[ch]
* app/tools/gimptoolinfo.[ch]: added an "identifier" which is an
untranslated string with a meaningful prefix and name, e.g.
"gimp:color_picker_tool". Renamed "tool_name" and "tool_desc"
to "blurb" and "help", changed the constructor accordingly.
Added gimp_tool_info_get_standards() to make the context work
with tool refresh.
* app/tools/tool_manager.[ch]
* app/tools/tools.c: removed the global list of tool class
structures because the tool info list is in place.
Added tool_manager_register_tool_options() which calls
tool_options_dialog_add() and registers the options in the
global_tool_info_list.
* app/tools/Makefile.am
* app/tools/paint_options.[ch]
* app/tools/selection_options.[ch]
* app/tools/tool_options.[ch]
* app/tools/tool_options_dialog.[ch]: build them all again. This
is mostly the old tool options system with minor modifications to
work with the new stuff. The tool options auto-update with the user
context now, so there are no update functions any more.
* app/gimpdnd.c
* app/toolbox.c
* app/tools/color_picker.c
* app/tools/measure.c
* app/tools/move.c: changed accordingly.
2001-01-02 Michael Natterer <mitch@gimp.org>
* app/bezier_select.c
* app/bezier_selectP.h
* app/selection_options.h: moved the integer "extend" variable from
SelectionOptions to the BezierSelect structure because it does not
have a UI widget. Also initialize it with "0" (was used
uninitialized before). I have no idea what it does.
2001-01-02 Michael Natterer <mitch@gimp.org>
* app/selection_options.h
* app/tool_options.c: made a correct tool toption out of
"Interactive" (added a default value and the "Reset" function,
set unused pointers to NULL).
* app/iscissors.c: fixed indentation and spacing.
2001-01-02 Daniel Egger <egger@suse.de>
* app/iscissors.c:
* app/selection_options.h:
* app/tool_options.c: Applied patch by laramieleavitt@onetel.net.uk to add
an interactive update to the iscissors tool.
2000-12-29 Michael Natterer <mitch@gimp.org>
* app/Makefile.am
* app/channel_pvt.h
* app/drawable_pvt.h
* app/gdisplayF.h
* app/gimpdrawableP.h
* app/gimpimageP.h
* app/layer_pvt.h
* app/toolsF.h: removed these files.
* app/apptypes.h
* tools/pdbgen/enums.pl: added tons of opaque typedefs and enums.
* tools/pdbgen/pdb/brush_select.pdb
* tools/pdbgen/pdb/brushes.pdb
* tools/pdbgen/pdb/channel.pdb
* tools/pdbgen/pdb/color.pdb
* tools/pdbgen/pdb/convert.pdb
* tools/pdbgen/pdb/display.pdb
* tools/pdbgen/pdb/drawable.pdb
* tools/pdbgen/pdb/fileops.pdb
* tools/pdbgen/pdb/gradient_select.pdb
* tools/pdbgen/pdb/gradients.pdb
* tools/pdbgen/pdb/help.pdb
* tools/pdbgen/pdb/image.pdb
* tools/pdbgen/pdb/layer.pdb
* tools/pdbgen/pdb/pattern_select.pdb
* tools/pdbgen/pdb/patterns.pdb
* tools/pdbgen/pdb/selection.pdb
* tools/pdbgen/pdb/tools.pdb
* app/*: chainsaw #include cleanup:
- Never (never!!) include stuff in header files except where we
need access to structures' contents (like derived objects).
- Added prototypes and proper formating in many files.
- The #include order in *all* *.c files is as follows:
#include "config.h"
#include <system stuff>
#include <gtk/gtk.h>
#include "apptypes.h"
#include "gimp stuff"
#include "libgimp stuff"
#include "libgimp/gimpintl.h"
By following this scheme we can easily see a file's dependencies
from it's #include's and can grep for the inclusion to find out
where a file is used.
* tools/pdbgen/app.pl: changed to follow the include scheme above.
* libgimp/Makefile.am
* libgimp/gimpuitypes.h: new file, included from libgimp/gimpui.h
and from app/apptypes.h.
* libgimp/gimpcolorbutton.[ch]
* libgimp/gimpdialog.[ch]
* libgimp/gimphelpui.[ch]
* libgimp/gimpparasite.[ch]
* libgimp/gimppatheditor.[ch]
* libgimp/gimpprotocol.c
* libgimp/gimpquerybox.[ch]
* libgimp/gimpsizeentry.[ch]
* libgimp/gimptypes.h
* libgimp/gimpui.h
* libgimp/gimpunit.h
* libgimp/gimpunitmenu.[ch]
* libgimp/gimpwidgets.[ch]: changed accordingly.
* plug-ins/FractalExplorer/Dialogs.c
* plug-ins/gdyntext/message_window.c
* plug-ins/imagemap/imap_default_dialog.c
* plug-ins/imagemap/imap_file.c: these files used to include
"libgimp/gimpui.h" without including "libgimp/gimp.h". This is
no longer possible because the libgimpui headers don't inlcude
"libgimp/gimpunit.h" any more.
2000-04-20 Michael Natterer <mitch@gimp.org>
* app/fuzzy_select.c
* app/selection_options.h
* app/tool_options.c: moved the "Threshold" scale from the fuzzy
select options to the selection options structure, so none of the
selection tools needs it's own tools options structure.
* app/bucket_fill.c: moved "Threshold" after "Sample Merged" as in
the fuzzy select options.
2000-02-07 Michael Natterer <mitch@gimp.org>
* app/*
* libgimp/*
* plug-ins/*
* tools/pdbgen/*: did a global s/GUnit/GimpUnit/ and
s/GimpSizeEntryUP/GimpSizeEntryUpdatePolicy/
* libgimp/gimpcolorspace.c: renamed the parameter names to match
the names in the header.
* libgimp/gimphelpui.h
* libgimp/gimpimage.c
* libgimp/gimpmatrix.h
* libgimp/gimpsizeentry.[ch]
* libgimp/gimpsizeentry.[ch]
* libgimp/gimpunit.[ch]
* libgimp/gimpunitmenu.[ch]
* libgimp/gimpwidgets.[ch]: added documentation and use g* types
all over the place (enables cross-referencing with the glib and
gtk+ html documentation).
* plug-ins/common/exchange.c
* plug-ins/common/max_rgb.c: small cleanups.
* plug-ins/common/mapcolor.c: the color buttons were attached in
the wrong order.
1999-04-12 Michael Natterer <mitschel@cs.tu-berlin.de>
* app/airbrush.c
* app/bezier_select.c
* app/blend.c
* app/brightness_contrast.c
* app/bucket_fill.c
* app/by_color_select.c
* app/clone.c
* app/color_balance.c
* app/color_picker.c
* app/convolve.c
* app/crop.c
* app/curves.c
* app/ellipse_select.c
* app/eraser.c
* app/flip_tool.c
* app/free_select.c
* app/fuzzy_select.c
* app/histogram_tool.c
* app/hue_saturation.c
* app/ink.c
* app/iscissors.c
* app/levels.c
* app/magnify.c
* app/move.c
* app/paintbrush.c
* app/pencil.c
* app/posterize.c
* app/rect_select.[ch]
* app/text_tool.c
* app/threshold.c
* app/transform_tool.c
* app/tools.[ch]
* app/toolsF.h: again: all tools :(
* app/Makefile.am
* app/tool_options.[ch]
* app/selection_options.h
* app/tool_options_ui.h: new files.
Ok, this time it's general enough for future extensions:
- The tool options structures are organized like the gtk object
system to allow derived tool options.
- Renamed all create and reset functions to *_options_new() and
*_options_reset() to reflect this.
- Changed tools_register() again. Now it takes just a pointer to a
ToolOptions structure.
- Moved almost the entire tool options gui code to tool_options.c.
- Visually separated the common selection options from the
tool-specific ones. I'd like to do the same with opacity/paint
mode in all paint tool options but I think this needs some more
discussion.
* app/histogram_tool.c: changed packing boxes, label alignments.
* app/paintbrush.c: some more sensitive settings. The gradient
feature can now be toggled with a button. Hopefully didn't break
anything.
