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/* Communication module for Android terminals. -*- c-file-style: "GNU" -*-
Copyright (C) 2023 Free Software Foundation, Inc.
This file is part of GNU Emacs.
GNU Emacs 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.
GNU Emacs 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 GNU Emacs. If not, see <https://www.gnu.org/licenses/>. */
package org.gnu.emacs;
import java.lang.Math;
import android.graphics.Bitmap;
import android.graphics.Canvas;
import android.graphics.Paint;
import android.graphics.PorterDuff.Mode;
import android.graphics.PorterDuffXfermode;
import android.graphics.Rect;
import android.graphics.Xfermode;
public class EmacsDrawLine
{
public static void
perform (EmacsDrawable drawable, EmacsGC gc,
int x, int y, int x2, int y2)
{
Rect rect;
Canvas canvas;
Paint paint;
int i;
/* TODO implement stippling. */
if (gc.fill_style == EmacsGC.GC_FILL_OPAQUE_STIPPLED)
return;
paint = gc.gcPaint;
rect = new Rect (Math.min (x, x2 + 1),
Math.min (y, y2 + 1),
Math.max (x2 + 1, x),
Math.max (y2 + 1, y));
canvas = drawable.lockCanvas (gc);
if (canvas == null)
return;
paint.setStyle (Paint.Style.STROKE);
/* Since drawLine has PostScript style behavior, adjust the
coordinates appropriately. */
if (gc.clip_mask == null)
canvas.drawLine ((float) x, (float) y + 0.5f,
(float) x2 + 0.5f, (float) y2 + 0.5f,
paint);
/* DrawLine with clip mask not implemented; it is not used by
Emacs. */
drawable.damageRect (rect);
}
}
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