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: 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.

libicon: Fix leak of Icon::Gradient.

This was most prominently visible in applications that show a lot of
icons like Tracker and Deskbar.

Enable just enough of the message based format used in Icon-O-Matic to allow
BIconUtils to understand and render it. This makes it possible to use the
HVIFTranslator to also read Icon-O-Matic files out of the box. Will cleanup
now duplicated files next.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@30794 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

* Add Style::HasTransparency() which just tells if any of the colors that the
style uses has an alpha value below 255.
* Add support for intermediate rendering passes to IconRenderer. Normally,
the whole icon is rendered in a single pass, which means shapes cannot
overlap. With the change, intermediate rendering passes are inserted when
a shape is encountered that contains transparency. This is an easy way to
allow for more feature rich icons, with easy support for glossy/reflective
surface effects or other such effects that require support for transparent
shapes on top of other shapes.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@24490 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

* moved all the classes actually needed for reading a
vector icon to this place, #ifdef'd out all the editing
features (listening, referencing, converting to
PropertyObject... etc)
* TODO: put into BPrivate namespace...


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@18396 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.

libicon: Fix leak of Icon::Gradient.

This was most prominently visible in applications that show a lot of
icons like Tracker and Deskbar.

Enable just enough of the message based format used in Icon-O-Matic to allow
BIconUtils to understand and render it. This makes it possible to use the
HVIFTranslator to also read Icon-O-Matic files out of the box. Will cleanup
now duplicated files next.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@30794 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

* Add Style::HasTransparency() which just tells if any of the colors that the
style uses has an alpha value below 255.
* Add support for intermediate rendering passes to IconRenderer. Normally,
the whole icon is rendered in a single pass, which means shapes cannot
overlap. With the change, intermediate rendering passes are inserted when
a shape is encountered that contains transparency. This is an easy way to
allow for more feature rich icons, with easy support for glossy/reflective
surface effects or other such effects that require support for transparent
shapes on top of other shapes.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@24490 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

* moved all the classes actually needed for reading a
vector icon to this place, #ifdef'd out all the editing
features (listening, referencing, converting to
PropertyObject... etc)
* TODO: put into BPrivate namespace...


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@18396 a95241bf-73f2-0310-859d-f6bbb57e9c96