gfx/thebes/src/gfxXlibSurface.cpp

   1 /* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 4 -*-
   2  * ***** BEGIN LICENSE BLOCK *****
   3  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
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   5  * The contents of this file are subject to the Mozilla Public License Version
   6  * 1.1 (the "License"); you may not use this file except in compliance with
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  11  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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  13  * License.
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  15  * The Original Code is Oracle Corporation code.
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  17  * The Initial Developer of the Original Code is Oracle Corporation.
  18  * Portions created by the Initial Developer are Copyright (C) 2005
  19  * the Initial Developer. All Rights Reserved.
  20  *
  21  * Contributor(s):
  22  *   Stuart Parmenter <pavlov@pavlov.net>
  23  *   Vladimir Vukicevic <vladimir@pobox.com>
  24  *
  25  * Alternatively, the contents of this file may be used under the terms of
  26  * either the GNU General Public License Version 2 or later (the "GPL"), or
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  37  * ***** END LICENSE BLOCK ***** */
  38
  39 #include "gfxXlibSurface.h"
  40
  41 #include "cairo.h"
  42 #include "cairo-xlib.h"
  43 #include "cairo-xlib-xrender.h"
  44
  45 static cairo_user_data_key_t pixmap_free_key;
  46
  47 typedef struct {
  48     Display* dpy;
  49     Pixmap pixmap;
  50 } pixmap_free_struct;
  51
  52 static void pixmap_free_func (void *);
  53
  54 #define XLIB_IMAGE_SIDE_SIZE_LIMIT 0xffff
  55
  56 gfxXlibSurface::gfxXlibSurface(Display *dpy, Drawable drawable, Visual *visual)
  57     : mPixmapTaken(PR_FALSE), mDisplay(dpy), mDrawable(drawable)
  58 {
  59     DoSizeQuery();
  60     cairo_surface_t *surf = cairo_xlib_surface_create(dpy, drawable, visual, mSize.width, mSize.height);
  61     Init(surf);
  62 }
  63
  64 gfxXlibSurface::gfxXlibSurface(Display *dpy, Drawable drawable, Visual *visual, const gfxIntSize& size)
  65     : mPixmapTaken(PR_FALSE), mDisplay(dpy), mDrawable(drawable), mSize(size)
  66 {
  67     if (!CheckSurfaceSize(size, XLIB_IMAGE_SIDE_SIZE_LIMIT))
  68         return;
  69
  70     cairo_surface_t *surf = cairo_xlib_surface_create(dpy, drawable, visual, mSize.width, mSize.height);
  71     Init(surf);
  72 }
  73
  74 gfxXlibSurface::gfxXlibSurface(Display *dpy, Visual *visual, const gfxIntSize& size)
  75     : mPixmapTaken(PR_FALSE), mDisplay(dpy), mSize(size)
  76
  77 {
  78     if (!CheckSurfaceSize(size, XLIB_IMAGE_SIDE_SIZE_LIMIT))
  79         return;
  80
  81     mDrawable = (Drawable)XCreatePixmap(dpy,
  82                                         RootWindow(dpy, DefaultScreen(dpy)),
  83                                         mSize.width, mSize.height,
  84                                         DefaultDepth(dpy, DefaultScreen(dpy)));
  85
  86     cairo_surface_t *surf = cairo_xlib_surface_create(dpy, mDrawable, visual, mSize.width, mSize.height);
  87
  88     Init(surf);
  89     TakePixmap();
  90 }
  91
  92 gfxXlibSurface::gfxXlibSurface(Display *dpy, Drawable drawable, XRenderPictFormat *format,
  93                                const gfxIntSize& size)
  94     : mPixmapTaken(PR_FALSE), mDisplay(dpy), mDrawable(drawable), mSize(size)
  95 {
  96     if (!CheckSurfaceSize(size, XLIB_IMAGE_SIDE_SIZE_LIMIT))
  97         return;
  98
  99     cairo_surface_t *surf = cairo_xlib_surface_create_with_xrender_format(dpy, drawable,
 100                                                                           ScreenOfDisplay(dpy,DefaultScreen(dpy)),
 101                                                                           format, mSize.width, mSize.height);
 102     Init(surf);
 103 }
 104
 105 gfxXlibSurface::gfxXlibSurface(Display *dpy, XRenderPictFormat *format, const gfxIntSize& size)
 106     : mPixmapTaken(PR_FALSE), mDisplay(dpy), mSize(size)
 107 {
 108     mDrawable = (Drawable)XCreatePixmap(dpy,
 109                                         RootWindow(dpy, DefaultScreen(dpy)),
 110                                         mSize.width, mSize.height,
 111                                         format->depth);
 112
 113     cairo_surface_t *surf = cairo_xlib_surface_create_with_xrender_format(dpy, mDrawable,
 114                                                                           ScreenOfDisplay(dpy,DefaultScreen(dpy)),
 115                                                                           format, mSize.width, mSize.height);
 116     Init(surf);
 117     TakePixmap();
 118 }
 119
 120 gfxXlibSurface::gfxXlibSurface(cairo_surface_t *csurf)
 121     : mPixmapTaken(PR_FALSE), mSize(-1.0, -1.0)
 122 {
 123     mDrawable = cairo_xlib_surface_get_drawable(csurf);
 124     mDisplay = cairo_xlib_surface_get_display(csurf);
 125
 126     Init(csurf, PR_TRUE);
 127 }
 128
 129 gfxXlibSurface::~gfxXlibSurface()
 130 {
 131 }
 132
 133 void
 134 gfxXlibSurface::DoSizeQuery()
 135 {
 136     // figure out width/height/depth
 137     Window root_ignore;
 138     int x_ignore, y_ignore;
 139     unsigned int bwidth_ignore, width, height, depth;
 140
 141     XGetGeometry(mDisplay,
 142                  mDrawable,
 143                  &root_ignore, &x_ignore, &y_ignore,
 144                  &width, &height,
 145                  &bwidth_ignore, &depth);
 146
 147     mSize.width = width;
 148     mSize.height = height;
 149 }
 150
 151 XRenderPictFormat*
 152 gfxXlibSurface::FindRenderFormat(Display *dpy, gfxImageFormat format)
 153 {
 154     switch (format) {
 155         case ImageFormatARGB32:
 156             return XRenderFindStandardFormat (dpy, PictStandardARGB32);
 157             break;
 158         case ImageFormatRGB24:
 159             return XRenderFindStandardFormat (dpy, PictStandardRGB24);
 160             break;
 161         case ImageFormatA8:
 162             return XRenderFindStandardFormat (dpy, PictStandardA8);
 163             break;
 164         case ImageFormatA1:
 165             return XRenderFindStandardFormat (dpy, PictStandardA1);
 166             break;
 167         default:
 168             return NULL;
 169     }
 170
 171     return (XRenderPictFormat*)NULL;
 172 }
 173
 174 void
 175 gfxXlibSurface::TakePixmap()
 176 {
 177     if (mPixmapTaken)
 178         return;
 179
 180     pixmap_free_struct *pfs = new pixmap_free_struct;
 181     pfs->dpy = mDisplay;
 182     pfs->pixmap = mDrawable;
 183
 184     cairo_surface_set_user_data (CairoSurface(),
 185                                  &pixmap_free_key,
 186                                  pfs,
 187                                  pixmap_free_func);
 188
 189     mPixmapTaken = PR_TRUE;
 190 }
 191
 192 void
 193 pixmap_free_func (void *data)
 194 {
 195     pixmap_free_struct *pfs = (pixmap_free_struct*) data;
 196
 197     XFreePixmap (pfs->dpy, pfs->pixmap);
 198
 199     delete pfs;
 200 }