/****************************************************************************
  Free any resources associated with this canvas and the canvas struct
  itself.
****************************************************************************/
void canvas_free(struct canvas *store)
{
  cairo_surface_destroy(store->surface);
  free(store);
}

void draw_rectangles(cairo_t *fbcr, struct tsdev *ts, cairo_linuxfb_device_t *device)
{
    int bufid = 1; /* start drawing into second buffer */
    float r, g, b;
    int fbsizex = device->fb_vinfo.xres;
    int fbsizey = device->fb_vinfo.yres;
    int startx, starty, sizex, sizey;
    struct ts_sample sample;
    cairo_surface_t *surface;
    cairo_t *cr;
    float scale = 1.0f;

    surface = cairo_image_surface_create(CAIRO_FORMAT_RGB16_565,
                                         fbsizex, fbsizey);
    cr = cairo_create(surface);

    /*
     * We clear the cairo surface here before drawing
     * This is required in case something was drawn on this surface
     * previously, the previous contents would not be cleared without this.
     */
    cairo_set_operator(cr, CAIRO_OPERATOR_CLEAR);
    cairo_paint(cr);

    cairo_set_operator(cr, CAIRO_OPERATOR_OVER);

    srand(time(NULL));

    while (!cancel) {
        r = (rand() % 100) / 100.0;
        g = (rand() % 100) / 100.0;
        b = (rand() % 100) / 100.0;
        startx = rand() % fbsizex;
        starty = rand() % fbsizey;
        sizex = rand() % (fbsizex - startx);
        sizey = rand() % (fbsizey - starty);

        cairo_identity_matrix(cr);
        if (ts) {
            int pressed = 0;

            /* Pressure is our identication whether we act on axis... */
            while (ts_read(ts, &sample, 1)) {
                if (sample.pressure > 0)
                    pressed = 1;
            }

            if (pressed) {
                scale *= 1.05f;
                cairo_translate(cr, sample.x, sample.y);
                cairo_scale(cr, scale, scale);
                //r = g = b = 0;
                startx = -5;
                starty = -5;
                sizex = 10;
                sizey = 10;
            } else {
                scale = 1.0f;
            }
        }

        cairo_set_source_rgb(cr, r, g, b);
        cairo_rectangle(cr, startx, starty, sizex, sizey);
        cairo_stroke_preserve(cr);
        cairo_fill(cr);

        /* Draw to framebuffer at y offset according to current buffer.. */
        cairo_set_source_surface(fbcr, surface, 0, bufid * fbsizey);
        cairo_paint(fbcr);
        flip_buffer(device, 1, bufid);

        /* Switch buffer ID for next draw */
        bufid = !bufid;
        usleep(20000);
    }

    /* Make sure we leave with buffer 0 enabled */
    flip_buffer(device, 1, 0);

    /* Destroy and release all cairo related contexts */
    cairo_destroy(cr);
    cairo_surface_destroy(surface);
}

//.........这里部分代码省略.........
      rsvg_init();
      rsvg_set_default_dpi_x_y (PIXELS_PER_INCH, PIXELS_PER_INCH);
      rsvg = rsvg_handle_new_from_file (fo_image_get_uri(fo_image), &error);
      rsvg_handle_render_cairo (rsvg, FO_DOC_CAIRO(fo_doc)->cr);
      rsvg_term();
      cairo_restore (FO_DOC_CAIRO(fo_doc)->cr);
      if (error) {
	g_log (G_LOG_DOMAIN,
	       G_LOG_LEVEL_ERROR,
	       error->message);
	g_error_free (error);
      }
      return;
    }
#endif

  if (n_channels == 3)
    {
      format = CAIRO_FORMAT_RGB24;
    }
  else
    {
      format = CAIRO_FORMAT_ARGB32;
    }

  cairo_pixels = g_malloc (4 * width * height);
  surface = cairo_image_surface_create_for_data ((unsigned char *)cairo_pixels,
						 format,
						 width, height, 4 * width);
  cairo_surface_set_user_data (surface, &key,
			       cairo_pixels, (cairo_destroy_func_t)g_free);

  for (j = height; j; j--)
    {
      guchar *p = gdk_pixels;
      guchar *q = cairo_pixels;

      if (n_channels == 3)
	{
	  guchar *end = p + 3 * width;
	  
	  while (p < end)
	    {
#if G_BYTE_ORDER == G_LITTLE_ENDIAN
	      q[0] = p[2];
	      q[1] = p[1];
	      q[2] = p[0];
#else	  
	      q[1] = p[0];
	      q[2] = p[1];
	      q[3] = p[2];
#endif
	      p += 3;
	      q += 4;
	    }
	}
      else
	{
	  guchar *end = p + 4 * width;
	  guint t1,t2,t3;
	    
#define MULT(d,c,a,t) G_STMT_START { t = c * a + 0x7f; d = ((t >> 8) + t) >> 8; } G_STMT_END

	  while (p < end)
	    {
#if G_BYTE_ORDER == G_LITTLE_ENDIAN
	      MULT(q[0], p[2], p[3], t1);
	      MULT(q[1], p[1], p[3], t2);
	      MULT(q[2], p[0], p[3], t3);
	      q[3] = p[3];
#else	  
	      q[0] = p[3];
	      MULT(q[1], p[0], p[3], t1);
	      MULT(q[2], p[1], p[3], t2);
	      MULT(q[3], p[2], p[3], t3);
#endif
	      
	      p += 4;
	      q += 4;
	    }
	  
#undef MULT
	}

      gdk_pixels += gdk_rowstride;
      cairo_pixels += 4 * width;
    }

  cairo_surface_set_fallback_resolution (surface,
					 PIXELS_PER_INCH,
					 PIXELS_PER_INCH);
  cairo_set_source_surface (FO_DOC_CAIRO (fo_doc)->cr, surface, 0, 0);
  cairo_pattern_t *pattern = cairo_get_source (FO_DOC_CAIRO (fo_doc)->cr);
  cairo_pattern_set_extend (pattern,
			    CAIRO_EXTEND_NONE);
  cairo_paint (FO_DOC_CAIRO (fo_doc)->cr);
  cairo_surface_destroy (surface);
  g_object_unref (pixbuf);
  cairo_restore (FO_DOC_CAIRO(fo_doc)->cr);
}

cairo_test_similar_t
cairo_test_target_has_similar (const cairo_test_context_t *ctx,
			       const cairo_boilerplate_target_t *target)
{
    cairo_surface_t *surface;
    cairo_test_similar_t has_similar;
    cairo_t * cr;
    cairo_surface_t *similar;
    cairo_status_t status;
    void *closure;
    char *path;

    /* ignore image intermediate targets */
    if (target->expected_type == CAIRO_SURFACE_TYPE_IMAGE)
	return DIRECT;

    if (getenv ("CAIRO_TEST_IGNORE_SIMILAR"))
	return DIRECT;

    xasprintf (&path, "%s/%s",
	       _cairo_test_mkdir (ctx->output) ? ctx->output : ".",
	       ctx->test_name);

    has_similar = DIRECT;
    do {
	do {
	    surface = (target->create_surface) (path,
						target->content,
						ctx->test->width,
						ctx->test->height,
						ctx->test->width + 25 * NUM_DEVICE_OFFSETS,
						ctx->test->height + 25 * NUM_DEVICE_OFFSETS,
						CAIRO_BOILERPLATE_MODE_TEST,
						&closure);
	    if (surface == NULL)
		goto out;
	} while (cairo_test_malloc_failure (ctx, cairo_surface_status (surface)));

	if (cairo_surface_status (surface))
	    goto out;

	cr = cairo_create (surface);
	cairo_push_group_with_content (cr,
				       cairo_boilerplate_content (target->content));
	similar = cairo_get_group_target (cr);
	status = cairo_surface_status (similar);

	if (cairo_surface_get_type (similar) == cairo_surface_get_type (surface))
	    has_similar = SIMILAR;
	else
	    has_similar = DIRECT;

	cairo_destroy (cr);
	cairo_surface_destroy (surface);

	if (target->cleanup)
	    target->cleanup (closure);
    } while (! has_similar && cairo_test_malloc_failure (ctx, status));
out:
    free (path);

    return has_similar;
}

//.........这里部分代码省略.........
    }
  if (image->rows == 0)
    {
      pango_layout_get_extents(layout,NULL,&extent);
      image->rows=(extent.y+extent.height+PANGO_SCALE/2)/PANGO_SCALE+2*page.y;
    }
  else
    {
      image->rows-=2*page.y;
      pango_layout_set_height(layout,(int) ((PANGO_SCALE*image->rows*
        (image->resolution.y == 0.0 ? 90.0 : image->resolution.y)+45.0)/90.0+
        0.5));
    }
  status=SetImageExtent(image,image->columns,image->rows,exception);
  if (status == MagickFalse)
    return(DestroyImageList(image));
  /*
    Render markup.
  */
  stride=(size_t) cairo_format_stride_for_width(CAIRO_FORMAT_ARGB32,
    (int) image->columns);
  pixel_info=AcquireVirtualMemory(image->rows,stride*sizeof(*pixels));
  if (pixel_info == (MemoryInfo *) NULL)
    {
      draw_info=DestroyDrawInfo(draw_info);
      caption=DestroyString(caption);
      ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
    }
  pixels=(unsigned char *) GetVirtualMemoryBlob(pixel_info);
  surface=cairo_image_surface_create_for_data(pixels,CAIRO_FORMAT_ARGB32,
    (int) image->columns,(int) image->rows,(int) stride);
  cairo_image=cairo_create(surface);
  cairo_set_operator(cairo_image,CAIRO_OPERATOR_CLEAR);
  cairo_paint(cairo_image);
  cairo_set_operator(cairo_image,CAIRO_OPERATOR_OVER);
  cairo_translate(cairo_image,page.x,page.y);
  cairo_set_source_rgba(cairo_image,QuantumScale*draw_info->fill.red,
    QuantumScale*draw_info->fill.green,QuantumScale*draw_info->fill.blue,
    QuantumScale*draw_info->fill.alpha);
  pango_cairo_show_layout(cairo_image,layout);
  cairo_destroy(cairo_image);
  cairo_surface_destroy(surface);
  g_object_unref(layout);
  g_object_unref(fontmap);
  /*
    Convert surface to image.
  */
  (void) SetImageBackgroundColor(image,exception);
  p=pixels;
  GetPixelInfo(image,&fill_color);
  for (y=0; y < (ssize_t) image->rows; y++)
  {
    register Quantum
      *q;

    register ssize_t
      x;

    q=GetAuthenticPixels(image,0,y,image->columns,1,exception);
    if (q == (Quantum *) NULL)
      break;
    for (x=0; x < (ssize_t) image->columns; x++)
    {
      double
        gamma;

      fill_color.blue=(double) ScaleCharToQuantum(*p++);
      fill_color.green=(double) ScaleCharToQuantum(*p++);
      fill_color.red=(double) ScaleCharToQuantum(*p++);
      fill_color.alpha=(double) ScaleCharToQuantum(*p++);
      /*
        Disassociate alpha.
      */
      gamma=QuantumScale*fill_color.alpha;
      gamma=PerceptibleReciprocal(gamma);
      fill_color.blue*=gamma;
      fill_color.green*=gamma;
      fill_color.red*=gamma;
      CompositePixelOver(image,&fill_color,fill_color.alpha,q,(double)
        GetPixelAlpha(image,q),q);
      q+=GetPixelChannels(image);
    }
    if (SyncAuthenticPixels(image,exception) == MagickFalse)
      break;
    if (image->previous == (Image *) NULL)
      {
        status=SetImageProgress(image,LoadImageTag,(MagickOffsetType) y,
        image->rows);
        if (status == MagickFalse)
          break;
      }
  }
  /*
    Relinquish resources.
  */
  pixel_info=RelinquishVirtualMemory(pixel_info);
  draw_info=DestroyDrawInfo(draw_info);
  caption=DestroyString(caption);
  return(GetFirstImageInList(image));
}

//.........这里部分代码省略.........
            y1 = buf.height;
            break;
          case 3:
            x0 = 0.0;
            y0 = buf.height * lib->splitline_y;
            x1 = buf.width;
            y1 = buf.height;
            break;
          default:
            fprintf(stderr, "OMFG, the world will collapse, this shouldn't be reachable!\n");
            return;
        }

        cairo_rectangle(cr, x0, y0, x1, y1);
        cairo_clip(cr);
      }

      cairo_set_source_surface(cr, surface, 0, 0);
      // set filter no nearest:
      // in skull mode, we want to see big pixels.
      // in 1 iir mode for the right mip, we want to see exactly what the pipe gave us, 1:1 pixel for pixel.
      // in between, filtering just makes stuff go unsharp.
      if((buf.width <= 8 && buf.height <= 8) || fabsf(scale - 1.0f) < 0.01f)
        cairo_pattern_set_filter(cairo_get_source(cr), CAIRO_FILTER_NEAREST);
      cairo_rectangle(cr, 0, 0, buf.width, buf.height);
      int overlay_modes_index = dt_bauhaus_combobox_get(lib->overlay_mode);
      if(overlay_modes_index >= 0)
      {
        cairo_operator_t mode = _overlay_modes[overlay_modes_index];
        cairo_set_operator(cr, mode);
      }
      cairo_fill(cr);
      cairo_set_operator(cr, CAIRO_OPERATOR_OVER);
      cairo_surface_destroy(surface);
    }
    cairo_restore(cr);
    if(buf.buf) dt_mipmap_cache_release(darktable.mipmap_cache, &buf);
    if(img) dt_image_cache_read_release(darktable.image_cache, img);

    // ON CANVAS CONTROLS
    if(use_splitline)
    {
      float scale = fminf(1.0, fminf(w / pw, h / ph));

      // image coordinates
      lib->overlay_x0 = 0.5 * (width - pw * scale);
      lib->overlay_y0 = 0.5 * (height - ph * scale + BAR_HEIGHT);
      lib->overlay_x1 = lib->overlay_x0 + pw * scale;
      lib->overlay_y1 = lib->overlay_y0 + ph * scale;

      // splitline position to absolute coords:
      double sl_x = lib->overlay_x0 + lib->splitline_x * pw * scale;
      double sl_y = lib->overlay_y0 + lib->splitline_y * ph * scale;

      int x0 = sl_x, y0 = 0.0, x1 = x0, y1 = height;
      if(lib->splitline_rotation % 2 != 0)
      {
        x0 = 0.0;
        y0 = sl_y;
        x1 = width;
        y1 = y0;
      }
      gboolean mouse_over_control = (lib->splitline_rotation % 2 == 0) ? (fabs(sl_x - pointerx) < 5)
                                                                       : (fabs(sl_y - pointery) < 5);
      cairo_save(cr);
      cairo_set_source_rgb(cr, .7, .7, .7);

//.........这里部分代码省略.........
  cairo_rectangle(cr, 0, 0, width - 2 * tb, height - 2 * tb);
  cairo_clip(cr);
  cairo_new_path(cr);
  // draw view
  dt_view_manager_expose(darktable.view_manager, cr, width - 2 * tb, height - 2 * tb, pointerx - tb,
                         pointery - tb);
  cairo_restore(cr);

  // draw log message, if any
  dt_pthread_mutex_lock(&darktable.control->log_mutex);
  if(darktable.control->log_ack != darktable.control->log_pos)
  {
    PangoRectangle ink;
    PangoLayout *layout;
    PangoFontDescription *desc = pango_font_description_copy_static(darktable.bauhaus->pango_font_desc);
    const float fontsize = DT_PIXEL_APPLY_DPI(14);
    pango_font_description_set_absolute_size(desc, fontsize * PANGO_SCALE);
    pango_font_description_set_weight(desc, PANGO_WEIGHT_BOLD);
    layout = pango_cairo_create_layout(cr);
    pango_layout_set_font_description(layout, desc);
    pango_layout_set_text(layout, darktable.control->log_message[darktable.control->log_ack], -1);
    pango_layout_get_pixel_extents(layout, &ink, NULL);
    const float pad = DT_PIXEL_APPLY_DPI(20.0f), xc = width / 2.0;
    const float yc = height * 0.85 + DT_PIXEL_APPLY_DPI(10), wd = pad + ink.width * .5f;
    float rad = DT_PIXEL_APPLY_DPI(14);
    cairo_set_line_width(cr, 1.);
    cairo_move_to(cr, xc - wd, yc + rad);
    for(int k = 0; k < 5; k++)
    {
      cairo_arc(cr, xc - wd, yc, rad, M_PI / 2.0, 3.0 / 2.0 * M_PI);
      cairo_line_to(cr, xc + wd, yc - rad);
      cairo_arc(cr, xc + wd, yc, rad, 3.0 * M_PI / 2.0, M_PI / 2.0);
      cairo_line_to(cr, xc - wd, yc + rad);
      if(k == 0)
      {
        color_found = gtk_style_context_lookup_color (context, "selected_bg_color", &color);
        if(!color_found)
        {
          color.red = 1.0;
          color.green = 0.0;
          color.blue = 0.0;
          color.alpha = 1.0;
        }
        gdk_cairo_set_source_rgba(cr, &color);
        cairo_fill_preserve(cr);
      }
      cairo_set_source_rgba(cr, 0., 0., 0., 1.0 / (1 + k));
      cairo_stroke(cr);
      rad += .5f;
    }
    color_found = gtk_style_context_lookup_color (context, "fg_color", &color);
    if(!color_found)
    {
      color.red = 1.0;
      color.green = 0.0;
      color.blue = 0.0;
      color.alpha = 1.0;
    }
    gdk_cairo_set_source_rgba(cr, &color);
    cairo_move_to(cr, xc - wd + .5f * pad, (yc + 1. / 3. * fontsize) - fontsize);
    pango_cairo_show_layout(cr, layout);
    pango_font_description_free(desc);
    g_object_unref(layout);
  }
  // draw busy indicator
  if(darktable.control->log_busy > 0)
  {
    PangoRectangle ink;
    PangoLayout *layout;
    PangoFontDescription *desc = pango_font_description_copy_static(darktable.bauhaus->pango_font_desc);
    const float fontsize = DT_PIXEL_APPLY_DPI(14);
    pango_font_description_set_absolute_size(desc, fontsize * PANGO_SCALE);
    pango_font_description_set_weight(desc, PANGO_WEIGHT_BOLD);
    layout = pango_cairo_create_layout(cr);
    pango_layout_set_font_description(layout, desc);
    pango_layout_set_text(layout, _("working.."), -1);
    pango_layout_get_pixel_extents(layout, &ink, NULL);
    const float xc = width / 2.0, yc = height * 0.85 - DT_PIXEL_APPLY_DPI(30), wd = ink.width * .5f;
    cairo_move_to(cr, xc - wd, yc + 1. / 3. * fontsize - fontsize);
    pango_cairo_layout_path(cr, layout);
    cairo_set_source_rgb(cr, 0.7, 0.7, 0.7);
    cairo_fill_preserve(cr);
    cairo_set_line_width(cr, 0.7);
    cairo_set_source_rgb(cr, 0.3, 0.3, 0.3);
    cairo_stroke(cr);
    pango_font_description_free(desc);
    g_object_unref(layout);
  }
  dt_pthread_mutex_unlock(&darktable.control->log_mutex);

  cairo_destroy(cr);

  cairo_t *cr_pixmap = cairo_create(darktable.gui->surface);
  cairo_set_source_surface(cr_pixmap, cst, 0, 0);
  cairo_paint(cr_pixmap);
  cairo_destroy(cr_pixmap);

  cairo_surface_destroy(cst);
  return NULL;
}

//.........这里部分代码省略.........
    },
    {
      "max-per-advance", '\0', 0, G_OPTION_ARG_INT, &max_per_advance,
      "Maximum runtime in seconds allowed for each advance (default 10)", NULL
    },
    {
      G_OPTION_REMAINING, '\0', 0, G_OPTION_ARG_FILENAME_ARRAY, &filenames,
      NULL, "<INPUT FILE> <OUTPUT FILE>"
    },
    {
      NULL
    }
  };

  // catch asserts and don't spew debug output by default
  g_log_set_always_fatal (G_LOG_LEVEL_ERROR | G_LOG_LEVEL_CRITICAL | G_LOG_LEVEL_WARNING);
  g_setenv ("SWFDEC_DEBUG", "0", FALSE);

  // init
  swfdec_init ();

  // read command line params
  context = g_option_context_new ("Run a Flash file trying to crash Swfdec");
  g_option_context_add_main_entries (context, entries, NULL);

  if (g_option_context_parse (context, &argc, &argv, &err) == FALSE) {
    g_printerr ("Couldn't parse command-line options: %s\n", err->message);
    g_error_free (err);
    return 1;
  }

  if (filenames == NULL || g_strv_length (filenames) < 1) {
    g_printerr ("At least one input filename is required\n");
    return 1;
  }

  // make them milliseconds
  play_per_file *= 1000;
  max_per_file *= 1000;
  max_per_advance *= 1000;

  // create surface
  surface = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, 1, 1);
  cr = cairo_create (surface);

  aborts = FALSE;
  for (i = 0; i < g_strv_length (filenames); i++)
  {
    glong played, advance, elapsed;

    g_print ("Running: %s\n", filenames[i]);

    // start timer
    timer = g_timer_new ();

    player = swfdec_player_new (NULL);
    url = swfdec_url_new_from_input (filenames[i]);
    swfdec_player_set_url (player, url);
    swfdec_url_free (url);

    // loop until we have played what we wanted, or timelimit is hit
    played = 0;
    elapsed = 0;
    while (played < play_per_file &&
	!swfdec_as_context_is_aborted (SWFDEC_AS_CONTEXT (player)))
    {
      elapsed = (glong)(g_timer_elapsed (timer, NULL) * 1000);
      if (elapsed >= max_per_file)
	break;
      swfdec_player_set_maximum_runtime (player,
	  MIN (max_per_advance, max_per_file - elapsed));

      advance = swfdec_player_get_next_event (player);
      if (advance == -1)
	break;
      played += swfdec_player_advance (player, advance);

      swfdec_player_render (player, cr);
    }

    if (elapsed >= max_per_file ||
	swfdec_as_context_is_aborted (SWFDEC_AS_CONTEXT (player))) {
      g_print ("*** Aborted ***\n");
      aborts = TRUE;
    }

    // clean up
    g_object_unref (player);
    g_timer_destroy (timer);
  }

  cairo_destroy (cr);
  cairo_surface_destroy (surface);

  if (aborts) {
    return 1;
  } else {
    return 0;
  }
}

static cairo_status_t
_cairo_clip_intersect_mask (cairo_clip_t      *clip,
			    cairo_traps_t     *traps,
			    cairo_antialias_t antialias,
			    cairo_surface_t   *target)
{
    cairo_pattern_union_t pattern;
    cairo_box_t extents;
    cairo_rectangle_t surface_rect, target_rect;
    cairo_surface_t *surface;
    cairo_status_t status;

    /* Represent the clip as a mask surface.  We create a new surface
     * the size of the intersection of the old mask surface and the
     * extents of the new clip path. */

    _cairo_traps_extents (traps, &extents);
    _cairo_box_round_to_rectangle (&extents, &surface_rect);

    if (clip->surface != NULL)
	_cairo_rectangle_intersect (&surface_rect, &clip->surface_rect);

    /* Intersect with the target surface rectangle so we don't use
     * more memory and time than we need to. */

    status = _cairo_surface_get_extents (target, &target_rect);
    if (!status)
	_cairo_rectangle_intersect (&surface_rect, &target_rect);

    surface = _cairo_surface_create_similar_solid (target,
						   CAIRO_CONTENT_ALPHA,
						   surface_rect.width,
						   surface_rect.height,
						   CAIRO_COLOR_WHITE);
    if (surface->status)
	return CAIRO_STATUS_NO_MEMORY;

    /* Render the new clipping path into the new mask surface. */

    _cairo_traps_translate (traps, -surface_rect.x, -surface_rect.y);
    _cairo_pattern_init_solid (&pattern.solid, CAIRO_COLOR_WHITE);
    
    status = _cairo_surface_composite_trapezoids (CAIRO_OPERATOR_IN,
						  &pattern.base,
						  surface,
						  antialias,
						  0, 0,
						  0, 0,
						  surface_rect.width,
						  surface_rect.height,
						  traps->traps,
						  traps->num_traps);

    _cairo_pattern_fini (&pattern.base);

    if (status) {
	cairo_surface_destroy (surface);
	return status;
    }

    /* If there was a clip surface already, combine it with the new
     * mask surface using the IN operator, so we get the intersection
     * of the old and new clipping paths. */

    if (clip->surface != NULL) {
	_cairo_pattern_init_for_surface (&pattern.surface, clip->surface);

	status = _cairo_surface_composite (CAIRO_OPERATOR_IN,
					   &pattern.base,
					   NULL,
					   surface,
					   surface_rect.x - clip->surface_rect.x,
					   surface_rect.y - clip->surface_rect.y,
					   0, 0,
					   0, 0,
					   surface_rect.width,
					   surface_rect.height);

	_cairo_pattern_fini (&pattern.base);

	if (status) {
	    cairo_surface_destroy (surface);
	    return status;
	}

	cairo_surface_destroy (clip->surface);
    }

    clip->surface = surface;
    clip->surface_rect = surface_rect;
    clip->serial = _cairo_surface_allocate_clip_serial (target);

    return status;
}

NS_IMETHODIMP
compzillaRenderingContext::CopyImageDataFrom (Display *dpy,
					      Window drawable,
					      PRInt32 src_x, PRInt32 src_y,
					      PRUint32 w, PRUint32 h)
{
  DEBUG ("CopyImageDataFrom (%d,%d)\n", w, h);

   // XXX this is wrong, but it'll do for now.  it needs to create a
   // (possibly smaller) subimage and composite it into the larger
   // mSurface.

    XImage *image = XGetImage (dpy, drawable, src_x, src_y, w, h, AllPlanes, ZPixmap);

#ifdef MOZ_CAIRO_GFX
    DEBUG ("thebes\n");

    gfxImageSurface *imagesurf = new gfxImageSurface(gfxIntSize (w, h), gfxASurface::ImageFormatARGB32);

    unsigned char *r = imagesurf->Data();
    unsigned char *p = (unsigned char*)image->data;
    for (int i = 0; i < w * h; i ++) {
      *r++ = *p++;
      *r++ = *p++;
      *r++ = *p++;
      *r = 255; r++; p++;
    }

    mThebesContext->SetSource (imagesurf, gfxPoint (src_x, src_y));
    mThebesContext->Paint ();
#if 0
    mThebesContext->DrawSurface (imagesurf, gfxSize (w, h));
#endif

#else
    // Fix colors
    unsigned char *r = (unsigned char*)image->data;
    for (int i = 0; i < w * h; i ++) {
      r[3] = 255; r += 4;
    }

    if (mImageSurfaceData) {
        int stride = mWidth*4;
        PRUint8 *dest = mImageSurfaceData + stride*src_y + src_x*4;

        for (int32 i = 0; i < src_y; i++) {
            memcpy(dest, image->data + (w*4)*i, w*4);
            dest += stride;
        }
    }
    else {
      cairo_surface_t *imgsurf;

        imgsurf = cairo_image_surface_create_for_data ((unsigned char*)image->data,
                                                       CAIRO_FORMAT_ARGB32,
                                                       w, h, w*4);
        cairo_save (mCairo);
        cairo_identity_matrix (mCairo);
        cairo_translate (mCairo, src_x, src_y);
        cairo_new_path (mCairo);
        cairo_rectangle (mCairo, 0, 0, w, h);
        cairo_set_source_surface (mCairo, imgsurf, 0, 0);
        cairo_set_operator (mCairo, CAIRO_OPERATOR_SOURCE);
        cairo_fill (mCairo);
        cairo_restore (mCairo);

        cairo_surface_destroy (imgsurf);
    }
#endif
   XFree (image);

   // XXX this redraws the entire canvas element.  we only need to
   // force a redraw of the affected rectangle.
   return Redraw ();
}

static void
st_drawing_area_paint (ClutterActor *self)
{
  StDrawingArea *area = ST_DRAWING_AREA (self);
  StDrawingAreaPrivate *priv = area->priv;
  StThemeNode *theme_node = st_widget_get_theme_node (ST_WIDGET (self));
  ClutterActorBox allocation_box;
  ClutterActorBox content_box;
  int width, height;
  CoglColor color;
  guint8 paint_opacity;

  (CLUTTER_ACTOR_CLASS (st_drawing_area_parent_class))->paint (self);

  clutter_actor_get_allocation_box (self, &allocation_box);
  st_theme_node_get_content_box (theme_node, &allocation_box, &content_box);

  width = (int)(0.5 + content_box.x2 - content_box.x1);
  height = (int)(0.5 + content_box.y2 - content_box.y1);

  if (priv->material == COGL_INVALID_HANDLE)
    priv->material = cogl_material_new ();

  if (priv->texture != COGL_INVALID_HANDLE &&
      (width != cogl_texture_get_width (priv->texture) ||
       height != cogl_texture_get_height (priv->texture)))
    {
      cogl_handle_unref (priv->texture);
      priv->texture = COGL_INVALID_HANDLE;
    }

  if (width > 0 && height > 0)
    {
      if (priv->texture == COGL_INVALID_HANDLE)
        {
          priv->texture = st_cogl_texture_new_with_size_wrapper (width, height,
                                                                 COGL_TEXTURE_NONE,
                                                                 CLUTTER_CAIRO_FORMAT_ARGB32);
          priv->needs_repaint = TRUE;
        }

      if (priv->needs_repaint)
        {
          cairo_surface_t *surface;

          surface = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, width, height);
          priv->context = cairo_create (surface);
          priv->in_repaint = TRUE;
          priv->needs_repaint = FALSE;

          g_signal_emit ((GObject*)area, st_drawing_area_signals[REPAINT], 0);

          priv->in_repaint = FALSE;
          cairo_destroy (priv->context);
          priv->context = NULL;

          cogl_texture_set_region (priv->texture, 0, 0, 0, 0, width, height, width, height,
                                   CLUTTER_CAIRO_FORMAT_ARGB32,
                                   cairo_image_surface_get_stride (surface),
                                   cairo_image_surface_get_data (surface));

          cairo_surface_destroy (surface);
        }
    }

  cogl_material_set_layer (priv->material, 0, priv->texture);

  if (priv->texture)
    {
      paint_opacity = clutter_actor_get_paint_opacity (self);
      cogl_color_set_from_4ub (&color,
                               paint_opacity, paint_opacity, paint_opacity, paint_opacity);
      cogl_material_set_color (priv->material, &color);

      cogl_set_source (priv->material);
      cogl_rectangle_with_texture_coords (content_box.x1, content_box.y1,
                                          width, height,
                                          0.0f, 0.0f, 1.0f, 1.0f);
    }
}

void RenderJob::run() {
	XOJ_CHECK_TYPE(RenderJob);

	if(handler == NULL) {
		handler = new RepaintWidgetHandler(this->view->getXournal()->getWidget());
	}

	double zoom = this->view->xournal->getZoom();

	g_mutex_lock(this->view->repaintRectMutex);

	bool rerenderComplete = this->view->rerenderComplete;
	GList * rerenderRects = this->view->rerenderRects;
	this->view->rerenderRects = NULL;

	this->view->rerenderComplete = false;

	g_mutex_unlock(this->view->repaintRectMutex);


	if (rerenderComplete) {
		Document * doc = this->view->xournal->getDocument();

		int dispWidth = this->view->getDisplayWidth();
		int dispHeight = this->view->getDisplayHeight();

		cairo_surface_t * crBuffer = cairo_image_surface_create(CAIRO_FORMAT_ARGB32, dispWidth, dispHeight);
		cairo_t * cr2 = cairo_create(crBuffer);
		cairo_scale(cr2, zoom, zoom);

		XojPopplerPage * popplerPage = NULL;

		doc->lock();

		if (this->view->page.getBackgroundType() == BACKGROUND_TYPE_PDF) {
			int pgNo = this->view->page.getPdfPageNr();
			popplerPage = doc->getPdfPage(pgNo);
		}

		DocumentView view;
		int width = this->view->page.getWidth();
		int height = this->view->page.getHeight();

		PdfView::drawPage(this->view->xournal->getCache(), popplerPage, cr2, zoom, width, height);
		view.drawPage(this->view->page, cr2, false);

		cairo_destroy(cr2);
		g_mutex_lock(this->view->drawingMutex);

		if (this->view->crBuffer) {
			cairo_surface_destroy(this->view->crBuffer);
		}
		this->view->crBuffer = crBuffer;

		g_mutex_unlock(this->view->drawingMutex);
		doc->unlock();

		handler->repaintComplete();
	} else {
		for (GList * l = rerenderRects; l != NULL; l = l->next) {
			Rectangle * rect = (Rectangle *) l->data;
			rerenderRectangle(rect);

			rect = this->view->rectOnWidget(rect->x, rect->y, rect->width, rect->height);
			handler->repaintRects(rect);
		}
	}


	// delete all rectangles
	for (GList * l = rerenderRects; l != NULL; l = l->next) {
		Rectangle * rect = (Rectangle *) l->data;
		delete rect;
	}
	g_list_free(rerenderRects);
}

void cd_clock_clear_theme (GldiModuleInstance *myApplet, gboolean bClearAll)
{
	if (myData.pBackgroundSurface != NULL)
	{
		cairo_surface_destroy (myData.pBackgroundSurface);
		myData.pBackgroundSurface = NULL;
	}
	if (myData.pForegroundSurface != NULL)
	{
		cairo_surface_destroy (myData.pForegroundSurface);
		myData.pForegroundSurface = NULL;
	}
	if (myData.iBgTexture != 0)
	{
		_cairo_dock_delete_texture (myData.iBgTexture);
		myData.iBgTexture = 0;
	}
	if (myData.iFgTexture != 0)
	{
		_cairo_dock_delete_texture (myData.iFgTexture);
		myData.iFgTexture = 0;
	}
	if (myData.iHourNeedleTexture != 0)
	{
		_cairo_dock_delete_texture (myData.iHourNeedleTexture);
		myData.iHourNeedleTexture = 0;
	}
	if (myData.iMinuteNeedleTexture != 0)
	{
		_cairo_dock_delete_texture (myData.iMinuteNeedleTexture);
		myData.iMinuteNeedleTexture = 0;
	}
	if (myData.iSecondNeedleTexture != 0)
	{
		_cairo_dock_delete_texture (myData.iSecondNeedleTexture);
		myData.iSecondNeedleTexture = 0;
	}
	if (myData.iDateTexture != 0)
	{
		_cairo_dock_delete_texture (myData.iDateTexture);
		myData.iDateTexture = 0;
	}
	
	if (myData.pNumericBgSurface != NULL)
	{
		cairo_surface_destroy (myData.pNumericBgSurface);
		myData.pNumericBgSurface = NULL;
	}
	
	if (bClearAll)
	{
		int i;
		for (i = 0; i < CLOCK_ELEMENTS; i ++)
		{
			if (myData.pSvgHandles[i] != NULL)
			{
				g_object_unref (myData.pSvgHandles[i]);
				myData.pSvgHandles[i] = NULL;
			}
		}
	}
}

void
gimp_view_renderer_set_viewable (GimpViewRenderer *renderer,
                                 GimpViewable     *viewable)
{
  g_return_if_fail (GIMP_IS_VIEW_RENDERER (renderer));
  g_return_if_fail (viewable == NULL || GIMP_IS_VIEWABLE (viewable));

  if (viewable)
    g_return_if_fail (g_type_is_a (G_TYPE_FROM_INSTANCE (viewable),
                                   renderer->viewable_type));

  if (viewable == renderer->viewable)
    return;

  if (renderer->surface)
    {
      cairo_surface_destroy (renderer->surface);
      renderer->surface = NULL;
    }

  if (renderer->pixbuf)
    {
      g_object_unref (renderer->pixbuf);
      renderer->pixbuf = NULL;
    }

  gimp_view_renderer_transform_free (renderer);

  if (renderer->viewable)
    {
      g_object_weak_unref (G_OBJECT (renderer->viewable),
                           (GWeakNotify) gimp_view_renderer_weak_notify,
                           renderer);

      g_signal_handlers_disconnect_by_func (renderer->viewable,
                                            G_CALLBACK (gimp_view_renderer_invalidate),
                                            renderer);

      g_signal_handlers_disconnect_by_func (renderer->viewable,
                                            G_CALLBACK (gimp_view_renderer_size_changed),
                                            renderer);

      if (GIMP_IS_COLOR_MANAGED (renderer->viewable))
        g_signal_handlers_disconnect_by_func (renderer->viewable,
                                              G_CALLBACK (gimp_view_renderer_profile_changed),
                                              renderer);
    }

  renderer->viewable = viewable;

  if (renderer->viewable)
    {
      g_object_weak_ref (G_OBJECT (renderer->viewable),
                         (GWeakNotify) gimp_view_renderer_weak_notify,
                         renderer);

      g_signal_connect_swapped (renderer->viewable,
                                "invalidate-preview",
                                G_CALLBACK (gimp_view_renderer_invalidate),
                                renderer);

      g_signal_connect_swapped (renderer->viewable,
                                "size-changed",
                                G_CALLBACK (gimp_view_renderer_size_changed),
                                renderer);

      if (GIMP_IS_COLOR_MANAGED (renderer->viewable))
        g_signal_connect_swapped (renderer->viewable,
                                  "profile-changed",
                                  G_CALLBACK (gimp_view_renderer_profile_changed),
                                  renderer);

      if (renderer->size != -1)
        gimp_view_renderer_set_size (renderer, renderer->size,
                                     renderer->border_width);

      gimp_view_renderer_invalidate (renderer);
    }
  else
    {
      gimp_view_renderer_update_idle (renderer);
    }
}

static void
cairo_perf_trace (cairo_perf_t			   *perf,
		  const cairo_boilerplate_target_t *target,
		  const char			   *trace)
{
    static cairo_bool_t first_run = TRUE;
    unsigned int i;
    cairo_time_t *times, *paint, *mask, *fill, *stroke, *glyphs;
    cairo_stats_t stats = {0.0, 0.0};
    struct trace args = { target };
    int low_std_dev_count;
    char *trace_cpy, *name;
    const cairo_script_interpreter_hooks_t hooks = {
	&args,
	perf->tile_size ? _tiling_surface_create : _similar_surface_create,
	NULL, /* surface_destroy */
	_context_create,
	NULL, /* context_destroy */
	NULL, /* show_page */
	NULL, /* copy_page */
	_source_image_create,
    };

    args.tile_size = perf->tile_size;
    args.observe = perf->observe;

    trace_cpy = xstrdup (trace);
    name = basename_no_ext (trace_cpy);

    if (perf->list_only) {
	printf ("%s\n", name);
	free (trace_cpy);
	return;
    }

    if (first_run) {
	if (perf->raw) {
	    printf ("[ # ] %s.%-s %s %s %s ...\n",
		    "backend", "content", "test-size", "ticks-per-ms", "time(ticks)");
	}

	if (perf->summary) {
	    if (perf->observe) {
		fprintf (perf->summary,
			 "[ # ] %8s %28s  %9s %9s %9s %9s %9s %9s %5s\n",
			 "backend", "test",
			 "total(s)", "paint(s)", "mask(s)", "fill(s)", "stroke(s)", "glyphs(s)",
			 "count");
	    } else {
		fprintf (perf->summary,
			 "[ # ] %8s %28s %8s %5s %5s %s\n",
			 "backend", "test", "min(s)", "median(s)",
			 "stddev.", "count");
	    }
	}
	first_run = FALSE;
    }

    times = perf->times;
    paint = times + perf->iterations;
    mask = paint + perf->iterations;
    stroke = mask + perf->iterations;
    fill = stroke + perf->iterations;
    glyphs = fill + perf->iterations;

    low_std_dev_count = 0;
    for (i = 0; i < perf->iterations && ! user_interrupt; i++) {
	cairo_script_interpreter_t *csi;
	cairo_status_t status;
	unsigned int line_no;

	args.surface = target->create_surface (NULL,
					       CAIRO_CONTENT_COLOR_ALPHA,
					       1, 1,
					       1, 1,
					       CAIRO_BOILERPLATE_MODE_PERF,
					       &args.closure);
	fill_surface(args.surface); /* remove any clear flags */

	if (perf->observe) {
	    cairo_surface_t *obs;
	    obs = cairo_surface_create_observer (args.surface,
						 CAIRO_SURFACE_OBSERVER_NORMAL);
	    cairo_surface_destroy (args.surface);
	    args.surface = obs;
	}
	if (cairo_surface_status (args.surface)) {
	    fprintf (stderr,
		     "Error: Failed to create target surface: %s\n",
		     target->name);
	    return;
	}

	cairo_perf_timer_set_synchronize (target->synchronize, args.closure);

	if (i == 0) {
	    describe (perf, args.closure);
	    if (perf->summary) {
		fprintf (perf->summary,
			 "[%3d] %8s %28s ",
//.........这里部分代码省略.........

//.........这里部分代码省略.........
      if (renderer->profile_transform)
        {
          gimp_gegl_convert_color_transform (src_buffer,
                                             GEGL_RECTANGLE (x - temp_buf_x,
                                                             y - temp_buf_y,
                                                             width, height),
                                             renderer->profile_src_format,
                                             dest_buffer,
                                             GEGL_RECTANGLE (0, 0, 0, 0),
                                             renderer->profile_dest_format,
                                             renderer->profile_transform);
        }
      else
        {
          gegl_buffer_copy (src_buffer,
                            GEGL_RECTANGLE (x - temp_buf_x,
                                            y - temp_buf_y,
                                            width, height),
                            GEGL_ABYSS_NONE,
                            dest_buffer,
                            GEGL_RECTANGLE (0, 0, 0, 0));
        }

      g_object_unref (src_buffer);
      g_object_unref (dest_buffer);

      cairo_surface_mark_dirty (alpha_surface);

      cairo_translate (cr, x, y);
      cairo_rectangle (cr, 0, 0, width, height);
      cairo_set_source_surface (cr, alpha_surface, 0, 0);
      cairo_fill (cr);

      cairo_surface_destroy (alpha_surface);
    }
  else if (channel == -1)
    {
      GeglBuffer *src_buffer;
      GeglBuffer *dest_buffer;

      cairo_surface_flush (surface);

      src_buffer  = gimp_temp_buf_create_buffer (temp_buf);
      dest_buffer = gimp_cairo_surface_create_buffer (surface);

      if (! renderer->profile_transform)
        gimp_view_renderer_transform_create (renderer, widget,
                                             src_buffer, dest_buffer);

      if (renderer->profile_transform)
        {
          gimp_gegl_convert_color_transform (src_buffer,
                                             GEGL_RECTANGLE (x - temp_buf_x,
                                                             y - temp_buf_y,
                                                             width, height),
                                             renderer->profile_src_format,
                                             dest_buffer,
                                             GEGL_RECTANGLE (x, y, 0, 0),
                                             renderer->profile_dest_format,
                                             renderer->profile_transform);
        }
      else
        {
          gegl_buffer_copy (src_buffer,
                            GEGL_RECTANGLE (x - temp_buf_x,
                                            y - temp_buf_y,

//.........这里部分代码省略.........
	} else if (strcmp(scaling_mode_str, "fill") == 0) {
		scaling_mode = SCALING_MODE_FILL;