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authorMattias Andrée <maandree@kth.se>2022-07-21 12:45:26 +0200
committerMattias Andrée <maandree@kth.se>2022-07-21 12:45:26 +0200
commitd2386fa0e3cc5e80fcfe51f07751d13676655d76 (patch)
tree5bb04bc188f3366fe2e50cca8e05020a8cf3cb6f /src/libgamma/Partition.java
parentmissed to set JAVA_HOME (diff)
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Improve makefile, change license to ISC, change code style, remove dist/
Signed-off-by: Mattias Andrée <maandree@kth.se>
Diffstat (limited to 'src/libgamma/Partition.java')
-rw-r--r--src/libgamma/Partition.java145
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diff --git a/src/libgamma/Partition.java b/src/libgamma/Partition.java
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-/**
- * jlibgamma — Display server abstraction layer for gamma ramp and Java
- * Copyright © 2014 Mattias Andrée (maandree@member.fsf.org)
- *
- * This library is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this library. If not, see <http://www.gnu.org/licenses/>.
- */
-package libgamma;
-
-
-/**
- * Partition state.
- *
- * Probably the majority of display server only one partition
- * per site. However, X.org can, and traditional used to have
- * on multi-headed environments, multiple partitions per site.
- * In X.org partitions are called 'screens'. It is not to be
- * confused with monitor. A screen is a collection of monitors,
- * and the mapping from monitors to screens is a surjection.
- * On hardware-level adjustment methods, such as Direct
- * Rendering Manager, a partition is a graphics card.
- */
-public class Partition
-{
- /**
- * Type initialiser.
- */
- static
- {
- Libgamma.initialise();
- }
-
-
-
- /**
- * Constructor.
- *
- * @param site The site this partition belongs to.
- * @param partition The index of the partition.
- */
- public Partition(Site site, int partition) throws LibgammaException
- {
- this.site = site;
- this.partition = partition;
- long[] r = libgamma_partition_create(site.address, partition);
- this.address = r[0];
- this.crtcs_available = (int)(r[1]);
- if (r[2] != 0)
- throw new LibgammaException((int)(r[2]));
- }
-
-
- /**
- * The site this partition belongs to.
- */
- public final Site site;
-
- /**
- * The index of the partition.
- */
- public final int partition;
-
- /**
- * The number of CRTC:s that are available under this
- * partition. Note that the CRTC:s are not necessarily
- * online.
- */
- public final int crtcs_available;
-
- /**
- * The address of the native object.
- */
- final long address;
-
-
- /**
- * Release resources.
- */
- public void close()
- {
- libgamma_partition_free(this.address);
- }
-
- /**
- * Restore the gamma ramps all CRTC:s within the partition to the system settings.
- */
- public void restore() throws LibgammaException
- {
- int r = libgamma_partition_restore(this.address);
- if (r != 0)
- throw new LibgammaException(r);
- }
-
-
- /**
- * {@inheritDoc}
- */
- public String toString()
- {
- return "<Partition: site = " + this.site.toString() + ", " +
- "partition = " + Integer.toString(this.partition) + ", " +
- "crtcs_available = " + Integer.toString(this.crtcs_available) + ">";
- }
-
-
-
- /**
- * Create a partition state.
- *
- * @param site The site state for the site that the partition belongs to.
- * @param partition The index of the partition within the site.
- * @return Element 0: The value for {@link #address}.
- * Element 1: The value for {@link #crtcs_available}
- * Element 2: Error code, zero on success.
- */
- private static native long[] libgamma_partition_create(long site, int partition);
-
- /**
- * Release all resources held by a partition state
- * and free the partition state pointer.
- *
- * @param address The partition state.
- */
- private static native void libgamma_partition_free(long address);
-
- /**
- * Restore the gamma ramps all CRTC:s within a partition to the system settings.
- *
- * @param address The partition state.
- * @return Zero on success, and error code on failure.
- */
- private static native int libgamma_partition_restore(long address);
-
-}
-