SkijaGraphics2D
Version 1.0.2, 4 August 2021
Overview
SkijaGraphics2D is an implementation of Java2D's Graphics2D
API that targets Skia via the Skija bindings. The project is exploratory at the moment, but potential uses for this are to:
- provide a path for Java applications to access the Skia rendering pipeline (potential speed and quality gains plus access to target formats such as SVG and PDF)
- include libraries such as JFreeChart and Orson Charts in Jetpack Compose Desktop applications
Note that these are potential uses, so far I haven't tried those things out...if you have then let us know what worked and what didn't work.
Testing
SkijaGraphics2D is being tested using Graphics2D Tester and produces the output shown below. There are several areas that still need work:
- fonts
- mapping of Java logical fonts to physical fonts
- metrics
- the
create()
method is not yet managing the user clip correctly, causing problems in the Swing UI / SteelSeries test - mapping of
RadialGradientPaint
focus point
Aside from those points, the results are already very promising.
Include
To include SkijaGraphics2D
in your own project, add the following Maven dependency:
<dependency>
<groupId>org.jfree</groupId>
<artifactId>org.jfree.skijagraphics2d</artifactId>
<version>1.0.2</version>
</dependency>
Build
You can build SkijaGraphics2D
from sources using Maven:
mvn clean install
License
SkijaGraphics2D
is licensed under a BSD-style license:
Copyright (c) 2021, Object Refinery Limited.
All rights reserved.
Redistribution and use in source and binary forms, with or without modification,
are permitted provided that the following conditions are met:
1. Redistributions of source code must retain the above copyright notice, this
list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright notice,
this list of conditions and the following disclaimer in the documentation
and/or other materials provided with the distribution.
3. Neither the name of the copyright holder nor the names of its contributors
may be used to endorse or promote products derived from this software without
specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
History
4-Aug-2021 : Version 1.0.2
- fix
setClip()
to restore original clip before applying new user clip - set
PathFillMode
when filling paths - add
MIN_LINE_WIDTH
to apply forBasicStroke(0f)
- fix exception when
Rectangle2D
has negativewidth
orheight
27-Jul-2021 : Version 1.0.1
- added specialisation in
fill(Shape)
forRectangle2D
instances - added caching of
Typeface
instances - fix paint setting for font rendering
- added support for
AlphaComposite
- apply clipping (still work-in-progress)
- fix for cyclic gradient paint
- updated
Skija
to version 0.92.18 - added logging via
SLF4J
andLog4J2
21-Jul-2021 : Version 1.0.0
- initial public release.