1 files changed, 116 insertions, 0 deletions
diff --git a/java/org/gnu/emacs/EmacsGC.java b/java/org/gnu/emacs/EmacsGC.java
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+++ b/java/org/gnu/emacs/EmacsGC.java
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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 android.graphics.Rect;
+
+/* X like graphics context structures.  Keep the enums in synch with
+   androidgui.h! */
+
+public class EmacsGC extends EmacsHandleObject
+{
+  public static final int GC_COPY = 0;
+  public static final int GC_XOR  = 1;
+
+  public static final int GC_FILL_SOLID			= 0;
+  public static final int GC_FILL_OPAQUE_STIPPLED	= 1;
+
+  public int function, fill_style;
+  public int foreground, background;
+  public int clip_x_origin, clip_y_origin;
+  public int ts_origin_x, ts_origin_y;
+  public Rect clip_rects[];
+  public EmacsPixmap clip_mask, stipple;
+  private boolean dirty;
+  private EmacsGC immutableGC;
+
+  /* The following fields are only set on immutable GCs.  */
+
+  public
+  EmacsGC (short handle)
+  {
+    /* For historical reasons the C code has an extra layer of
+       indirection above this GC handle.  struct android_gc is the GC
+       used by Emacs code, while android_gcontext is the type of the
+       handle.  */
+    super (handle);
+
+    fill_style = GC_FILL_SOLID;
+    function = GC_COPY;
+    foreground = 0;
+    background = 0xffffffff;
+  }
+
+  public
+  EmacsGC (EmacsGC source)
+  {
+    super ((short) 0);
+
+    int i;
+
+    function = source.function;
+    fill_style = source.fill_style;
+    foreground = source.foreground;
+    background = source.background;
+    clip_x_origin = source.clip_x_origin;
+    clip_y_origin = source.clip_y_origin;
+    clip_rects = source.clip_rects;
+    clip_mask = source.clip_mask;
+    stipple = source.stipple;
+    ts_origin_x = source.ts_origin_x;
+    ts_origin_y = source.ts_origin_y;
+
+    /* Offset all the clip rects by ts_origin_x and ts_origin_y.  */
+
+    if ((ts_origin_x != 0 || ts_origin_y != 0)
+	&& clip_rects != null)
+      {
+	clip_rects = new Rect[clip_rects.length];
+
+	for (i = 0; i < clip_rects.length; ++i)
+	  {
+	    clip_rects[i] = new Rect (source.clip_rects[i]);
+	    clip_rects[i].offset (ts_origin_x,
+				  ts_origin_y);
+	  }
+      }
+  }
+
+  /* Mark this GC as dirty.  This means immutableGC will return a new
+     copy of this GC the next time it is called.  */
+
+  public void
+  markDirty ()
+  {
+    dirty = true;
+  }
+
+  public EmacsGC
+  immutableGC ()
+  {
+    if (immutableGC == null || dirty)
+      {
+	immutableGC = new EmacsGC (this);
+	dirty = false;
+      }
+
+    return immutableGC;
+  };
+};