Version 1.0.4, 23 January 2022
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 engine, perhaps providing speed and/or quality gains compared to Java2D as well as access to target formats supported by Skia (for example, SVG and PDF)
- to include libraries such as JFreeChart and Orson Charts in Jetpack Compose Desktop applications (but see issue #7).
Note that these are potential uses, so far I haven't tried those things out...if you have then let me know what worked and what didn't work.
SkijaGraphics2D is being tested using Graphics2D Tester and produces the output shown below and now matches Java2D quite closely:
To include SkijaGraphics2D
in your own project, add the following Maven dependency:
<dependency>
<groupId>org.jfree</groupId>
<artifactId>org.jfree.skijagraphics2d</artifactId>
<version>1.0.4</version>
</dependency>
You can build SkijaGraphics2D
from sources using Maven:
mvn clean install
- switch to the Skija bindings at https://github.com/HumbleUI/Skija
- handle
Ellipse2D
directly indraw(Shape)
andfill(Shape)
- map focus point correctly for
RadialGradientPaint
- add default font mappings for Java logical fonts
- get font metrics from Skija (not Java2D)
- fix bug in
setColor(Color)
method where Skija paint not set - fix clipping issues
- 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
- 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
- initial public release.
SkijaGraphics2D
is licensed under a BSD-style license:
Copyright (c) 2021, by David Gilbert.
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
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(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
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(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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