mirror of git://git.sv.gnu.org/emacs.git
122 lines
3.3 KiB
Java
122 lines
3.3 KiB
Java
/* Communication module for Android terminals. -*- c-file-style: "GNU" -*-
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Copyright (C) 2023-2024 Free Software Foundation, Inc.
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This file is part of GNU Emacs.
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GNU Emacs is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or (at
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your option) any later version.
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GNU Emacs is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU 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 GNU Emacs. If not, see <https://www.gnu.org/licenses/>. */
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package org.gnu.emacs;
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import android.graphics.Rect;
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import android.graphics.Paint;
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import android.graphics.PorterDuff.Mode;
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import android.graphics.PorterDuffXfermode;
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import android.graphics.Xfermode;
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/* X like graphics context structures. Keep the enums in synch with
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androidgui.h! */
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public final class EmacsGC extends EmacsHandleObject
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{
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public static final int GC_COPY = 0;
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public static final int GC_XOR = 1;
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public static final int GC_FILL_SOLID = 0;
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public static final int GC_FILL_OPAQUE_STIPPLED = 1;
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public static final Xfermode xorAlu, srcInAlu;
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public int function, fill_style;
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public int foreground, background;
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public int clip_x_origin, clip_y_origin;
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public int ts_origin_x, ts_origin_y;
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public Rect clip_rects[], real_clip_rects[];
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public EmacsPixmap clip_mask, stipple;
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public Paint gcPaint;
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/* ID incremented every time the clipping rectangles of any GC
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changes. */
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private static long clip_serial;
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/* The value of clipRectID after the last time this GCs clip
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rectangles changed. 0 if there are no clip rectangles. */
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public long clipRectID;
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static
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{
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xorAlu = new PorterDuffXfermode (Mode.XOR);
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srcInAlu = new PorterDuffXfermode (Mode.SRC_IN);
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}
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/* The following fields are only set on immutable GCs. */
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public
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EmacsGC (short handle)
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{
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/* For historical reasons the C code has an extra layer of
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indirection above this GC handle. struct android_gc is the GC
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used by Emacs code, while android_gcontext is the type of the
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handle. */
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super (handle);
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fill_style = GC_FILL_SOLID;
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function = GC_COPY;
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foreground = 0;
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background = 0xffffff;
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gcPaint = new Paint ();
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}
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/* Mark this GC as dirty. Apply parameters to the paint and
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recompute real_clip_rects. */
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public void
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markDirty (boolean clipRectsChanged)
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{
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int i;
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if (clipRectsChanged)
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{
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if ((ts_origin_x != 0 || ts_origin_y != 0)
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&& clip_rects != null)
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{
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real_clip_rects = new Rect[clip_rects.length];
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for (i = 0; i < clip_rects.length; ++i)
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{
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real_clip_rects[i] = new Rect (clip_rects[i]);
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real_clip_rects[i].offset (ts_origin_x, ts_origin_y);
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}
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}
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else
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real_clip_rects = clip_rects;
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clipRectID = ++clip_serial;
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}
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gcPaint.setStrokeWidth (1f);
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gcPaint.setColor (foreground | 0xff000000);
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gcPaint.setXfermode (function == GC_XOR
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? xorAlu : srcInAlu);
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}
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public void
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resetXfermode ()
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{
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gcPaint.setXfermode (function == GC_XOR
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? xorAlu : srcInAlu);
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}
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};
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