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: Remove unused function parameter

Change-Id: Idbcddacb54597eb10c95de3db2b08067e507bbda
Reviewed-on: https://review.haiku-os.org/c/haiku/+/6446
Tested-by: Commit checker robot <no-reply+buildbot@haiku-os.org>
Reviewed-by: Adrien Destugues <pulkomandy@pulkomandy.tk>

Icon-O-Matic: replace SVG parser with nanosvg

The parser was based on an old example from agg. NanoSVG is originally
based on the same code, but has lots of bugfixes. So it makes sense
to use it.

Nanosvg revision 25241c5a8f8451d41ab1b02ab2d865b01600d949

Fixes #5955, #8586, #13021.

Change-Id: I38ff9aa4e1d403c41979ebe42f7b45d4500a870c
Reviewed-on: https://review.haiku-os.org/c/haiku/+/2661
Reviewed-by: waddlesplash <waddlesplash@gmail.com>

Icon-O-Matic: Make GradientTransformable a BReferenceable

* Switch to using support/Referenceable.h instead of using an older copy
of this code.
* Make GradientTransformable a BReferenceable and fix #12033.

Icon-O-Matic: import SVG gradient names.

The names are often program generated, but better than no name at all.

Fix the build with GCC4.8

Signed-off-by: Jérôme Duval <jerome.duval@gmail.com>

* 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

* improvements to saving/loading, biggest flaw was that appending an icon
changed the save entry_ref to the appended file, instead of keeping it
* added cleaning up styles (removing duplicates) after importing from SVG
* compile fixes for rgb_color ==/!= rgb_color
* added Style::operator==(const Style& other)
* improved debug output when listeners are still attached
to a VectorPath upon destruction



git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@19188 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

* when loading an icon via drag&drop, the file will be remembered
for saving later
* added "Clean Up" feature to "Path" menu
* added "Freeze Transformation" to "Shape" menu (will apply the
current shape transformation onto the path and reset the shape
transformation to identity)
* small cleanup in ShapeListView
* implemented zooming in CanvasView
* added context menu while editing a path
* implemented undo/redo for transforming points
(press T or use context menu)
* added "Split Points" feature (path editing context menu), it will
make two points from one control point
* improved selecting path points with selection rect
* improved SVG import for zuMis BeOS icons (more precise scale)



git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@18800 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: Make GradientTransformable a BReferenceable

* Switch to using support/Referenceable.h instead of using an older copy
of this code.
* Make GradientTransformable a BReferenceable and fix #12033.

Icon-O-Matic: import SVG gradient names.

The names are often program generated, but better than no name at all.

Fix the build with GCC4.8

Signed-off-by: Jérôme Duval <jerome.duval@gmail.com>

* 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

* improvements to saving/loading, biggest flaw was that appending an icon
changed the save entry_ref to the appended file, instead of keeping it
* added cleaning up styles (removing duplicates) after importing from SVG
* compile fixes for rgb_color ==/!= rgb_color
* added Style::operator==(const Style& other)
* improved debug output when listeners are still attached
to a VectorPath upon destruction



git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@19188 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

* when loading an icon via drag&drop, the file will be remembered
for saving later
* added "Clean Up" feature to "Path" menu
* added "Freeze Transformation" to "Shape" menu (will apply the
current shape transformation onto the path and reset the shape
transformation to identity)
* small cleanup in ShapeListView
* implemented zooming in CanvasView
* added context menu while editing a path
* implemented undo/redo for transforming points
(press T or use context menu)
* added "Split Points" feature (path editing context menu), it will
make two points from one control point
* improved selecting path points with selection rect
* improved SVG import for zuMis BeOS icons (more precise scale)



git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@18800 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