kopia lustrzana https://gitlab.com/sane-project/backends
146 wiersze
5.0 KiB
Java
146 wiersze
5.0 KiB
Java
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/* sane - Scanner Access Now Easy.
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Copyright (C) 1997 Jeffrey S. Freedman
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This file is part of the SANE package.
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330, Boston,
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MA 02111-1307, USA.
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As a special exception, the authors of SANE give permission for
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additional uses of the libraries contained in this release of SANE.
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The exception is that, if you link a SANE library with other files
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to produce an executable, this does not by itself cause the
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resulting executable to be covered by the GNU General Public
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License. Your use of that executable is in no way restricted on
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account of linking the SANE library code into it.
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This exception does not, however, invalidate any other reasons why
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the executable file might be covered by the GNU General Public
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License.
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If you submit changes to SANE to the maintainers to be included in
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a subsequent release, you agree by submitting the changes that
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those changes may be distributed with this exception intact.
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If you write modifications of your own for SANE, it is your choice
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whether to permit this exception to apply to your modifications.
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If you do not wish that, delete this exception notice. */
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//
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// SaneOption.java - Sane option descriptor.
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//
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// Written: 10/9/97 - JSF
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//
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public class SaneOption
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{
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//
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// Sane option types:
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//
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public static final int TYPE_BOOL = 0;
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public static final int TYPE_INT = 1;
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public static final int TYPE_FIXED = 2;
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public static final int TYPE_STRING = 3;
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public static final int TYPE_BUTTON = 4;
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public static final int TYPE_GROUP = 5;
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//
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// Sane value units:
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//
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public static final int UNIT_NONE = 0; // the value is unit-less
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// (e.g., # of scans)
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public static final int UNIT_PIXEL = 1; // value is number of pixels
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public static final int UNIT_BIT = 2; // value is number of bits
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public static final int UNIT_MM = 3; // value is millimeters
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public static final int UNIT_DPI = 4; // value is res. in dots/inch
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public static final int UNIT_PERCENT = 5;// value is a percentage
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//
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// Option capabilities:
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//
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public static final int CAP_SOFT_SELECT = (1 << 0);
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public static final int CAP_HARD_SELECT = (1 << 1);
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public static final int CAP_SOFT_DETECT = (1 << 2);
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public static final int CAP_EMULATED = (1 << 3);
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public static final int CAP_AUTOMATIC = (1 << 4);
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public static final int CAP_INACTIVE = (1 << 5);
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public static final int CAP_ADVANCED = (1 << 6);
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//
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// Constraints:
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//
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public static final int CONSTRAINT_NONE = 0;
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public static final int CONSTRAINT_RANGE = 1;
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public static final int CONSTRAINT_WORD_LIST = 2;
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public static final int CONSTRAINT_STRING_LIST = 3;
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//
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// Actions for controlOption():
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//
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public static final int ACTION_GET_VALUE = 0;
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public static final int ACTION_SET_VALUE = 1;
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public static final int ACTION_SET_AUTO = 2;
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//
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// Flags passed back in 'info' field param. of
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// setControlOption():
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//
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public static final int INFO_INEXACT = (1 << 0);
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public static final int INFO_RELOAD_OPTIONS = (1 << 1);
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public static final int INFO_RELOAD_PARAMS = (1 << 2);
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//
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// Class members:
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//
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public String name; // name of this option (command-line name)
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public String title; // title of this option (single-line)
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public String desc; // description of this option (multi-line)
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public int type; // how are values interpreted? (TYPE_)
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public int unit; // what is the (physical) unit? (UNIT_)
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public int size;
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public int cap; // capabilities
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public int constraintType;
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// These are a union in the "C" API:
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// Null-terminated list:
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public String[] stringListConstraint;
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// First element is list-length:
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public int[] wordListConstraint;
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public SaneRange rangeConstraint;
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//
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// Public methods:
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//
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public boolean is_active()
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{ return ((cap) & CAP_INACTIVE) == 0; }
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public boolean is_settable()
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{ return ((cap) & CAP_SOFT_SELECT) == 0; }
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// Return string describing units.
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// "unitLength" is # mm. preferred.
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public String unitString(double unitLength)
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{
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switch (unit)
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{
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case UNIT_NONE: return "none";
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case UNIT_PIXEL: return "pixel";
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case UNIT_BIT: return "bit";
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case UNIT_DPI: return "dpi";
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case UNIT_PERCENT: return "%";
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case UNIT_MM:
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if (unitLength > 9.9 && unitLength < 10.1)
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return "cm";
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else if (unitLength > 25.3 && unitLength < 25.5)
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return "in";
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return "mm";
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}
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return "";
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}
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}
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