Icon-O-Matic: Add perspective transformations

As part of adding perspective transformations, agg_trans_perspective.h
was patched to fix a multiple definitions error. This change has been
submitted for review to the "upstream" repositories at [1], [2],
and [3].

Also includes various other improvements such as VertexSource being
split into its own file, code style improvements, and documentation
improvements.

[1] https://sourceforge.net/p/agg/patches/6/
[2] https://github.com/ghaerr/agg-2.6/pull/9
[3] https://github.com/aggeom/agg-2.6/pull/7

Change-Id: I4bffd2f87354bde10155e23145a232a925be6ff3
Reviewed-on: https://review.haiku-os.org/c/haiku/+/6801
Reviewed-by: Adrien Destugues <pulkomandy@pulkomandy.tk>

Icon-O-Matic: Improve saving-related error messages

Improves the errors that are given to the user when exporting to an
HVIF file failed. Examples of errors improved include errors related to
having too many shapes, too many paths, or too many points in a path.

Also changes the icon shown in the alert box from an info icon to an
error icon.

Fixes #13978

Change-Id: I12a08e9857a95bd4d41da029320fa6f8182c3aa5
Reviewed-on: https://review.haiku-os.org/c/haiku/+/6837
Reviewed-by: Adrien Destugues <pulkomandy@pulkomandy.tk>
Reviewed-by: waddlesplash <waddlesplash@gmail.com>
Tested-by: Commit checker robot <no-reply+buildbot@haiku-os.org>

Icon-O-Matic: Generalize some classes

* Turns PathContainer, ShapeContainer, StyleContainer into Container.
* Makes Shape use Container for storing Tansformers instead of
reinventing the wheel yet again.
* Moves common logic from AddPathsCommand, AddStylesCommand,
AddShapesCommand, and AddTransformersCommand to AddCommand.
* Factors out common logic from two more commands similar to above.
This adds the MoveCommand and RemoveCommand classes.
* Cleans up some code style.

Change-Id: I59eca94a1c45eac608514f269f6e5f8628f93fab
Reviewed-on: https://review.haiku-os.org/c/haiku/+/6640
Tested-by: Commit checker robot <no-reply+buildbot@haiku-os.org>
Reviewed-by: Adrien Destugues <pulkomandy@pulkomandy.tk>

Icon-O-Matic: Add reference images

Fixes #2748

Also fixes a comment misstating a function's name and code style.

Change-Id: I609a1f1e100ded647818e70b428cedc48cf29036
Reviewed-on: https://review.haiku-os.org/c/haiku/+/6604
Tested-by: Commit checker robot <no-reply+buildbot@haiku-os.org>
Reviewed-by: Adrien Destugues <pulkomandy@pulkomandy.tk>

Icon-O-Matic: Move some functions to header files

Change-Id: I3b12e88e133cfe8e9b0f5830f69d582bbaaa93c2
Reviewed-on: https://review.haiku-os.org/c/haiku/+/6466
Tested-by: Commit checker robot <no-reply+buildbot@haiku-os.org>
Reviewed-by: Adrien Destugues <pulkomandy@pulkomandy.tk>

Icon-O-Matic: check number of items when exporting

Silently saving only part of the data is not nice and confusing.

The error message just says "Out of range" now however, which is not
really great either. We could improve the error reporting, and, as
mentionned in the ticket, also warn in the UI when the limit is reached
(a marker near the shape/path/fill lists maybe?) so the user knows they
need to simplify their picture.

Part of #13978

Change-Id: I978ff3d377b3652c7f1c5fac4f429ade0398d5f7
Reviewed-on: https://review.haiku-os.org/c/haiku/+/2852
Reviewed-by: waddlesplash <waddlesplash@gmail.com>

Icon-o-matic: some 64 bit fixes

* fixed warnings in icon-o-matic (one of which was actually a style issue ;-)

git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@38270 a95241bf-73f2-0310-859d-f6bbb57e9c96

* Cleanup in the Gradient department. No fuctional change.
Renamed BGradient::color_step to BGradient::ColorStop
as it's called everywhere else. Also renamed BGradient::gradient_type
to just BGradient::Type. Renamed BGradient::Type() to GetType().
* Simplification of method names in Painter.cpp. Some not yet
complete and yet inactive code to accelerate vertical gradients
(bypassing AGG for this special case).


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@29214 a95241bf-73f2-0310-859d-f6bbb57e9c96

Moved the gradient_type and color_step structs into the BGradient
class/namespace. Renamed the B_GRADIENT_* types to TYPE_* as the context
is already given.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@28564 a95241bf-73f2-0310-859d-f6bbb57e9c96

Patch by Artur Wyszynski:
* Implemented BGradient, BGradientLinear, BGradientRadial,
BGradientDiamond, BGradientConic and BGradientRadialFocus
new Interface Kit classes.
* Implemented all the (AGG-based) backend necessary in
the app_server to render gradients (Painter, DrawingEngine)
* app_server/View can convert a BGradient layout to screen
coordinates.
* Added BGradient methods of the Fill* methods in BView.
* Implemented a test app and added it to the image as a
demo.
* Adopted Icon-O-Matic and libs/icon in order to avoid
clashing with the new BGradient class. Re-use some
parts where possible.

Awesome work, Artur! Thanks a lot. Now a more modern
looking GUI has just become much easier to implement! :-)

TODO:
* Remove the need to have gradient type twice in the
app_server protocol.
* Refactor some parts of the patch to remove duplicated
code (Painter, DrawingEngine).
* Adopt the BPicture protocol to know about BGradients.
* Review some parts of the BArchivable implementation.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@28109 a95241bf-73f2-0310-859d-f6bbb57e9c96

Small cleanup for 80 char/line limit.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@27064 a95241bf-73f2-0310-859d-f6bbb57e9c96

* fixed two bugs related to #1445, on BeOS R5, BFS has a bug that prevents
attributes to be written under a certain name when they already exist under
the same name but with a different type
* the code that did the saving to a temporary file, then copied the attributes
of the original file, then clobbered the original file prevented saving the
icon in the icon attribute reliably, disabled this code for now and added
TODO how it should work better


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@22205 a95241bf-73f2-0310-859d-f6bbb57e9c96

* added "NativeSaver" which combines the MessageExporter and AttributeSaver
to save the document also as icon attribute to a native Icon-O-Matic
document file
* added cmd-Y short cut to main window (on a German keyboard, Y and Z
are swapped, but the Undo/Redo shortcuts are still "Z" while Z is much
harder to reach than Y)
* fixed warning in SetColorCommand.cpp
* FlatIconExporter needs to save the attribute using B_VECTOR_ICON_TYPE
(of course)



git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@21235 a95241bf-73f2-0310-859d-f6bbb57e9c96

big clean up of Save and Export stuff:
* implemented SavePanel that let's you chose the Export format
* introduced DocumentSaver class and several implementations
* Document no longer remembers any entry_refs, but a native
and export document saver, for other export formats than
HVIF, it is no longer necessary to go through the file panel,
simply invoking Export will do
* this makes it much easier to have a custom saver that sends
a message with an HVIF icon to another app instead of saving
to a file
* cleaned up File menu
* last used export format is persistent


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@19307 a95241bf-73f2-0310-859d-f6bbb57e9c96

various GCC 4 build fixes


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@18875 a95241bf-73f2-0310-859d-f6bbb57e9c96

* merged Icon-O-Matic from Ingos layout branch into trunk (r18134:18685)


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@18686 a95241bf-73f2-0310-859d-f6bbb57e9c96

Icon-o-matic: some 64 bit fixes

* fixed warnings in icon-o-matic (one of which was actually a style issue ;-)

git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@38270 a95241bf-73f2-0310-859d-f6bbb57e9c96

* Cleanup in the Gradient department. No fuctional change.
Renamed BGradient::color_step to BGradient::ColorStop
as it's called everywhere else. Also renamed BGradient::gradient_type
to just BGradient::Type. Renamed BGradient::Type() to GetType().
* Simplification of method names in Painter.cpp. Some not yet
complete and yet inactive code to accelerate vertical gradients
(bypassing AGG for this special case).


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@29214 a95241bf-73f2-0310-859d-f6bbb57e9c96

Moved the gradient_type and color_step structs into the BGradient
class/namespace. Renamed the B_GRADIENT_* types to TYPE_* as the context
is already given.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@28564 a95241bf-73f2-0310-859d-f6bbb57e9c96

Patch by Artur Wyszynski:
* Implemented BGradient, BGradientLinear, BGradientRadial,
BGradientDiamond, BGradientConic and BGradientRadialFocus
new Interface Kit classes.
* Implemented all the (AGG-based) backend necessary in
the app_server to render gradients (Painter, DrawingEngine)
* app_server/View can convert a BGradient layout to screen
coordinates.
* Added BGradient methods of the Fill* methods in BView.
* Implemented a test app and added it to the image as a
demo.
* Adopted Icon-O-Matic and libs/icon in order to avoid
clashing with the new BGradient class. Re-use some
parts where possible.

Awesome work, Artur! Thanks a lot. Now a more modern
looking GUI has just become much easier to implement! :-)

TODO:
* Remove the need to have gradient type twice in the
app_server protocol.
* Refactor some parts of the patch to remove duplicated
code (Painter, DrawingEngine).
* Adopt the BPicture protocol to know about BGradients.
* Review some parts of the BArchivable implementation.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@28109 a95241bf-73f2-0310-859d-f6bbb57e9c96

Small cleanup for 80 char/line limit.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@27064 a95241bf-73f2-0310-859d-f6bbb57e9c96

* fixed two bugs related to #1445, on BeOS R5, BFS has a bug that prevents
attributes to be written under a certain name when they already exist under
the same name but with a different type
* the code that did the saving to a temporary file, then copied the attributes
of the original file, then clobbered the original file prevented saving the
icon in the icon attribute reliably, disabled this code for now and added
TODO how it should work better


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@22205 a95241bf-73f2-0310-859d-f6bbb57e9c96

* added "NativeSaver" which combines the MessageExporter and AttributeSaver
to save the document also as icon attribute to a native Icon-O-Matic
document file
* added cmd-Y short cut to main window (on a German keyboard, Y and Z
are swapped, but the Undo/Redo shortcuts are still "Z" while Z is much
harder to reach than Y)
* fixed warning in SetColorCommand.cpp
* FlatIconExporter needs to save the attribute using B_VECTOR_ICON_TYPE
(of course)



git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@21235 a95241bf-73f2-0310-859d-f6bbb57e9c96

big clean up of Save and Export stuff:
* implemented SavePanel that let's you chose the Export format
* introduced DocumentSaver class and several implementations
* Document no longer remembers any entry_refs, but a native
and export document saver, for other export formats than
HVIF, it is no longer necessary to go through the file panel,
simply invoking Export will do
* this makes it much easier to have a custom saver that sends
a message with an HVIF icon to another app instead of saving
to a file
* cleaned up File menu
* last used export format is persistent


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@19307 a95241bf-73f2-0310-859d-f6bbb57e9c96

various GCC 4 build fixes


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@18875 a95241bf-73f2-0310-859d-f6bbb57e9c96

* merged Icon-O-Matic from Ingos layout branch into trunk (r18134:18685)


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@18686 a95241bf-73f2-0310-859d-f6bbb57e9c96