libjava/jni/gtk-peer/gtkcairopeer.h

   1 #ifndef __GTKCAIROPEER_H__
   2 #define __GTKCAIROPEER_H__
   3
   4 /* gtkcairopeer.h -- Some global variables and #defines
   5    Copyright (C) 1998, 1999 Free Software Foundation, Inc.
   6
   7 This file is part of GNU Classpath.
   8
   9 GNU Classpath is free software; you can redistribute it and/or modify
  10 it under the terms of the GNU General Public License as published by
  11 the Free Software Foundation; either version 2, or (at your option)
  12 any later version.
  13
  14 GNU Classpath is distributed in the hope that it will be useful, but
  15 WITHOUT ANY WARRANTY; without even the implied warranty of
  16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  17 General Public License for more details.
  18
  19 You should have received a copy of the GNU General Public License
  20 along with GNU Classpath; see the file COPYING.  If not, write to the
  21 Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  22 02111-1307 USA.
  23
  24 Linking this library statically or dynamically with other modules is
  25 making a combined work based on this library.  Thus, the terms and
  26 conditions of the GNU General Public License cover the whole
  27 combination.
  28
  29 As a special exception, the copyright holders of this library give you
  30 permission to link this library with independent modules to produce an
  31 executable, regardless of the license terms of these independent
  32 modules, and to copy and distribute the resulting executable under
  33 terms of your choice, provided that you also meet, for each linked
  34 independent module, the terms and conditions of the license of that
  35 module.  An independent module is a module which is not derived from
  36 or based on this library.  If you modify this library, you may extend
  37 this exception to your version of the library, but you are not
  38 obligated to do so.  If you do not wish to do so, delete this
  39 exception statement from your version. */
  40
  41 #include "gtkpeer.h"
  42 #include <cairo.h>
  43 #include <gdk-pixbuf/gdk-pixbuf.h>
  44
  45 /*
  46    A graphics2d struct is both simpler and uglier than a graphics
  47    struct.
  48
  49    Most of the graphics2d drawing state is held in the referenced cairo_t
  50    and corresponding cairo_surface_t, so we can ignore it.
  51
  52    In addition to the cairo_t, we need to hold an extra reference to the
  53    underlying GdkDrawable so its refcount matches the lifecycle of the java
  54    Graphics object which is peering with us; also a reference to a byte
  55    buffer and cairo_surface_t which contain the pattern you're drawing from
  56    (if it exists).
  57
  58    Finally, it is possible that we are using a non-RENDER capable X server,
  59    therefore we will be drawing to an cairo_surface_t which is actually a
  60    pixbuf. When this is the case, the pointer to a GdkPixbuf will be
  61    non-NULL and any drawing operation needs to be bracketed by pixbuf
  62    load/save operations. If the GdkPixbuf pointer is NULL, we will treat
  63    the cairo_surface_t as RENDER-capable.
  64  */
  65
  66 struct graphics2d
  67 {
  68   cairo_t *cr;
  69   cairo_surface_t *surface;
  70   GdkDrawable *drawable;
  71   GdkWindow *win;
  72   GdkPixbuf *drawbuf;
  73   char *pattern_pixels;
  74   cairo_surface_t *pattern_surface;
  75   cairo_pattern_t *pattern;
  76   gboolean debug;
  77   enum
  78     {
  79       MODE_DRAWABLE_WITH_RENDER,
  80       MODE_DRAWABLE_NO_RENDER,
  81       MODE_JAVA_ARRAY
  82     }
  83   mode;
  84
  85   /* Support for MODE_JAVA_ARRAY */
  86   jintArray jarray;
  87   jint width, height;
  88   jint *javabuf;
  89   jboolean isCopy;
  90 };
  91
  92 #endif /* __GTKCAIROPEER_H */