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b84fa71f89
* java/org/gnu/emacs/EmacsDrawRectangle.java (perform): Ignore GC_INVERT. * java/org/gnu/emacs/EmacsFillRectangle.java (EmacsFillRectangle) <invertFilter>: New variable. (perform): If the transfer mode is invert, copy the source to itself with invertFilter as the color filter. * java/org/gnu/emacs/EmacsGC.java (EmacsGC) <xorAlu, srcInAlu>: Delete now-redundant ALUs. (markDirty): Cease updating the paint's transfermode. * java/org/gnu/emacs/EmacsSafThread.java (openDocument1): Fix typo in documentation. * src/android.c (android_blit_xor): Delete unused function. (android_copy_area): Remove calls to unused blit functions. * src/androidgui.h (enum android_gc_function): Rename XOR to INVERT. * src/androidterm.c (android_flash): Replace with GXinvert.
91 lines
2.5 KiB
Java
91 lines
2.5 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.Bitmap;
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import android.graphics.Canvas;
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import android.graphics.ColorFilter;
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import android.graphics.ColorMatrixColorFilter;
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import android.graphics.Paint;
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import android.graphics.Rect;
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import android.util.Log;
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public final class EmacsFillRectangle
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{
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/* Color filter that inverts colors from the source. */
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private static final ColorFilter invertFilter;
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static
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{
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invertFilter = new ColorMatrixColorFilter (new float[] {
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-1f, 0f, 0f, 0f, 255f,
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0f, -1f, 0f, 0f, 255f,
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0f, 0f, -1f, 0f, 255f,
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0f, 0f, 0f, 1f, 0f,
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});
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};
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public static void
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perform (EmacsDrawable drawable, EmacsGC gc,
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int x, int y, int width, int height)
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{
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Paint paint;
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Rect rect;
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Canvas canvas;
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Bitmap invertBitmap;
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canvas = drawable.lockCanvas (gc);
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/* Clip masks are not respected or implemented when specified with
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this request. */
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if (canvas == null || gc.clip_mask != null)
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return;
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rect = new Rect (x, y, x + width, y + height);
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if (gc.function != EmacsGC.GC_INVERT)
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{
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paint = gc.gcPaint;
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paint.setStyle (Paint.Style.FILL);
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if (gc.fill_style != EmacsGC.GC_FILL_OPAQUE_STIPPLED)
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canvas.drawRect (rect, paint);
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else
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gc.blitOpaqueStipple (canvas, rect);
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}
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else
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{
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paint = new Paint ();
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/* Simply invert the destination, which is only implemented for
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this request. As Android doesn't permit copying a bitmap to
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itself, a copy of the source must be procured beforehand. */
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invertBitmap = Bitmap.createBitmap (drawable.getBitmap (),
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x, y, width, height);
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paint.setColorFilter (invertFilter);
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canvas.drawBitmap (invertBitmap, null, rect, paint);
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paint.setColorFilter (null);
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invertBitmap.recycle ();
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}
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drawable.damageRect (rect);
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}
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};
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