gnome-canvas: Remove aa code

The anti-aliased code was never used, so remove it.

6 files changed, 65 insertions, 368 deletions

diff --git a/libgnomecanvas/gnome-canvas-line.c b/libgnomecanvas/gnome-canvas-line.c
index a55b298beb..7488eff9de 100644
--- a/libgnomecanvas/gnome-canvas-line.c
+++ b/libgnomecanvas/gnome-canvas-line.c
@@ -801,8 +801,7 @@ gnome_canvas_line_set_property (GObject              *object,
 			line->fill_pixel = gnome_canvas_get_color_pixel (item->canvas,
 									 line->fill_rgba);
 
-		if (!item->canvas->aa)
-			set_line_gc_foreground (line);
+		set_line_gc_foreground (line);
 
 		gnome_canvas_item_request_redraw_svp (item, line->fill_svp);
 
@@ -1011,11 +1010,6 @@ static void
 gnome_canvas_line_update (GnomeCanvasItem *item, gdouble *affine, ArtSVP *clip_path, gint flags)
 {
 	GnomeCanvasLine *line;
-	gint i;
-	ArtVpath *vpath;
-	ArtPoint pi, pc;
-	gdouble width;
-	ArtSVP *svp;
 	gdouble x1, y1, x2, y2;
 
 	line = GNOME_CANVAS_LINE (item);
@@ -1025,61 +1019,12 @@ gnome_canvas_line_update (GnomeCanvasItem *item, gdouble *affine, ArtSVP *clip_p
 
 	reconfigure_arrows (line);
 
-	if (item->canvas->aa) {
-		gnome_canvas_item_reset_bounds (item);
-
-		vpath = art_new (ArtVpath, line->num_points + 2);
-
-		for (i = 0; i < line->num_points; i++) {
-			pi.x = line->coords[i * 2];
-			pi.y = line->coords[i * 2 + 1];
-			art_affine_point (&pc, &pi, affine);
-			vpath[i].code = i == 0 ? ART_MOVETO : ART_LINETO;
-			vpath[i].x = pc.x;
-			vpath[i].y = pc.y;
-		}
-		vpath[i].code = ART_END;
-		vpath[i].x = 0;
-		vpath[i].y = 0;
-
-		if (line->width_pixels)
-			width = line->width;
-		else
-			width = line->width * art_affine_expansion (affine);
+        set_line_gc_foreground (line);
+        set_line_gc_width (line);
+        set_stipple (line, line->stipple, TRUE);
 
-		if (width < 0.5)
-			width = 0.5;
-
-		svp = art_svp_vpath_stroke (vpath,
-					    gnome_canvas_join_gdk_to_art (line->join),
-					    gnome_canvas_cap_gdk_to_art (line->cap),
-					    width,
-					    4,
-					    0.25);
-		art_free (vpath);
-
-		gnome_canvas_item_update_svp_clip (item, &line->fill_svp, svp, clip_path);
-
-		if (line->first_arrow && line->first_coords) {
-			svp = svp_from_points (line->first_coords, NUM_ARROW_POINTS, affine);
-                        gnome_canvas_item_update_svp_clip (item,
-                                        &line->first_svp, svp, clip_path);
-                }
-
-		if (line->last_arrow && line->last_coords) {
-			svp = svp_from_points (line->last_coords, NUM_ARROW_POINTS, affine);
-                        gnome_canvas_item_update_svp_clip (item,
-                                        &line->last_svp, svp, clip_path);
-                }
-
-	} else {
-		set_line_gc_foreground (line);
-		set_line_gc_width (line);
-		set_stipple (line, line->stipple, TRUE);
-
-		get_bounds_canvas (line, &x1, &y1, &x2, &y2, affine);
-		gnome_canvas_update_bbox (item, x1, y1, x2, y2);
-	}
+        get_bounds_canvas (line, &x1, &y1, &x2, &y2, affine);
+        gnome_canvas_update_bbox (item, x1, y1, x2, y2);
 }
 
 static void
diff --git a/libgnomecanvas/gnome-canvas-shape.c b/libgnomecanvas/gnome-canvas-shape.c
index b1154975b2..fa8a4bad7b 100644
--- a/libgnomecanvas/gnome-canvas-shape.c
+++ b/libgnomecanvas/gnome-canvas-shape.c
@@ -335,12 +335,8 @@ gnome_canvas_shape_set_property (GObject      *object,
 	shape = GNOME_CANVAS_SHAPE (object);
 	priv = shape->priv;
 
-	if (!item->canvas->aa) {
-		gcbp_ensure_gdk (shape);
-		gdk = priv->gdk;
-	} else {
-		gdk = NULL;
-	}
+        gcbp_ensure_gdk (shape);
+        gdk = priv->gdk;
 
 	switch (param_id) {
 	case PROP_FILL_COLOR:
@@ -544,18 +540,12 @@ gnome_canvas_shape_get_property (GObject     *object,
                                  GValue      *value,
                                  GParamSpec  *pspec)
 {
-	GnomeCanvasItem         *item = GNOME_CANVAS_ITEM (object);
 	GnomeCanvasShape        *shape = GNOME_CANVAS_SHAPE (object);
 	GnomeCanvasShapePriv    *priv = shape->priv;
 	GnomeCanvasShapePrivGdk *gdk;
 
-	if (!item->canvas->aa) {
-		gcbp_ensure_gdk (shape);
-		gdk = priv->gdk;
-	}
-	else {
-		gdk = NULL;
-	}
+        gcbp_ensure_gdk (shape);
+        gdk = priv->gdk;
 
 	switch (param_id) {
 	case PROP_FILL_COLOR_GDK:
@@ -636,26 +626,23 @@ static void
 gnome_canvas_shape_realize (GnomeCanvasItem *item)
 {
 	GnomeCanvasShape *shape;
+        GtkLayout *layout;
+        GdkWindow *bin_window;
 
 	shape = GNOME_CANVAS_SHAPE (item);
 
 	if (parent_class->realize)
 		(* parent_class->realize) (item);
 
-	if (!item->canvas->aa) {
-		GtkLayout *layout;
-		GdkWindow *bin_window;
-
-		gcbp_ensure_gdk (shape);
+        gcbp_ensure_gdk (shape);
 
-		layout = GTK_LAYOUT (item->canvas);
-		bin_window = gtk_layout_get_bin_window (layout);
+        layout = GTK_LAYOUT (item->canvas);
+        bin_window = gtk_layout_get_bin_window (layout);
 
-		g_assert (bin_window != NULL);
+        g_assert (bin_window != NULL);
 
-		shape->priv->gdk->fill_gc = gdk_gc_new (bin_window);
-		shape->priv->gdk->outline_gc = gdk_gc_new (bin_window);
-	}
+        shape->priv->gdk->fill_gc = gdk_gc_new (bin_window);
+        shape->priv->gdk->outline_gc = gdk_gc_new (bin_window);
 }
 
 static void
@@ -665,15 +652,13 @@ gnome_canvas_shape_unrealize (GnomeCanvasItem *item)
 
 	shape = GNOME_CANVAS_SHAPE (item);
 
-	if (!item->canvas->aa) {
-		g_assert (shape->priv->gdk != NULL);
+        g_assert (shape->priv->gdk != NULL);
 
-		g_object_unref (shape->priv->gdk->fill_gc);
-		shape->priv->gdk->fill_gc = NULL;
+        g_object_unref (shape->priv->gdk->fill_gc);
+        shape->priv->gdk->fill_gc = NULL;
 
-		g_object_unref (shape->priv->gdk->outline_gc);
-		shape->priv->gdk->outline_gc = NULL;
-	}
+        g_object_unref (shape->priv->gdk->outline_gc);
+        shape->priv->gdk->outline_gc = NULL;
 
 	if (parent_class->unrealize)
 		(* parent_class->unrealize) (item);
@@ -839,8 +824,6 @@ gnome_canvas_shape_update_gdk (GnomeCanvasShape * shape, gdouble * affine, ArtSV
 	gboolean bbox_set = FALSE;
 	gint width = 0; /* silence gcc */
 
-	g_assert (!((GnomeCanvasItem *) shape)->canvas->aa);
-
 	priv = shape->priv;
 	gdk = priv->gdk;
 	g_assert (gdk != NULL);
@@ -1085,11 +1068,6 @@ gnome_canvas_shape_update (GnomeCanvasItem *item, gdouble *affine, ArtSVP *clip_
 	/* Outline width */
 	shape->priv->scale = art_affine_expansion (affine);
 
-	/* Reset bbox */
-	if (item->canvas->aa) {
-		gnome_canvas_item_reset_bounds (item);
-	}
-
 	/* Clipped fill SVP */
 
 	if ((priv->fill_set) && (priv->path) && (gnome_canvas_path_def_any_closed (priv->path))) {
@@ -1119,20 +1097,12 @@ gnome_canvas_shape_update (GnomeCanvasItem *item, gdouble *affine, ArtSVP *clip_
 		svp2 = art_svp_writer_rewind_reap (swr);
 		art_svp_free (svp);
 
-		if (item->canvas->aa) {
-			/* Update clipped path */
-			gnome_canvas_item_update_svp_clip (item,
-							   &shape->priv->fill_svp,
-							   svp2,
-							   clip_path);
-		} else {
-			if (priv->fill_svp) {
-				art_svp_free (priv->fill_svp);
-				priv->fill_svp = NULL;
-			}
-			/* No clipping */
-			shape->priv->fill_svp = svp2;
-		}
+                if (priv->fill_svp) {
+                        art_svp_free (priv->fill_svp);
+                        priv->fill_svp = NULL;
+                }
+                /* No clipping */
+                shape->priv->fill_svp = svp2;
 	}
 
 	if (priv->outline_set && priv->path && !gnome_canvas_path_def_is_empty (priv->path)) {
@@ -1177,24 +1147,16 @@ gnome_canvas_shape_update (GnomeCanvasItem *item, gdouble *affine, ArtSVP *clip_
 					    0.25);
 		art_free (vpath);
 
-		if (item->canvas->aa) {
-			/* Update clipped */
-			gnome_canvas_item_update_svp_clip (item, &priv->outline_svp, svp, clip_path);
-		} else {
-			if (priv->outline_svp) {
-				art_svp_free (priv->outline_svp);
-				priv->outline_svp = NULL;
-			}
-			/* No clipping (yet) */
-			shape->priv->outline_svp = svp;
-		}
+                if (priv->outline_svp) {
+                        art_svp_free (priv->outline_svp);
+                        priv->outline_svp = NULL;
+                }
+                /* No clipping (yet) */
+                shape->priv->outline_svp = svp;
 	}
 
 	/* Gdk requires additional handling */
-
-	if (!item->canvas->aa) {
-		gnome_canvas_shape_update_gdk (shape, affine, clip_path, flags);
-	}
+        gnome_canvas_shape_update_gdk (shape, affine, clip_path, flags);
 }
 
 static double
@@ -1307,8 +1269,6 @@ set_stipple (GdkGC *gc, GdkBitmap **internal_stipple, GdkBitmap *stipple, gint r
 static void
 gcbp_ensure_gdk (GnomeCanvasShape * shape)
 {
-	g_assert (!((GnomeCanvasItem *) shape)->canvas->aa);
-
 	if (!shape->priv->gdk) {
 		GnomeCanvasShapePrivGdk * gdk;
 
@@ -1343,8 +1303,6 @@ gcbp_destroy_gdk (GnomeCanvasShape * shape)
 {
 	GnomeCanvasShapePrivGdk * gdk;
 
-	g_assert (!((GnomeCanvasItem *)shape)->canvas->aa);
-
 	gdk = shape->priv->gdk;
 
 	if (gdk) {
diff --git a/libgnomecanvas/gnome-canvas-text.c b/libgnomecanvas/gnome-canvas-text.c
index 7b3dd0695b..16cc3f78ab 100644
--- a/libgnomecanvas/gnome-canvas-text.c
+++ b/libgnomecanvas/gnome-canvas-text.c
@@ -711,47 +711,8 @@ gnome_canvas_text_set_property (GObject            *object,
 	color_changed = FALSE;
 	have_pixel = FALSE;
 
-	if (!text->layout) {
-
-		PangoContext *gtk_context, *context;
-		gtk_context = gtk_widget_get_pango_context (GTK_WIDGET (item->canvas));
-
-		if (item->canvas->aa)  {
-			PangoFontMap *fontmap;
-			PangoLanguage *language;
-			gint	pixels, mm;
-			gdouble	dpi_x;
-			gdouble	dpi_y;
-
-			pixels = gdk_screen_width ();
-			mm = gdk_screen_width_mm ();
-			dpi_x = (((gdouble) pixels * 25.4) / (gdouble) mm);
-
-			pixels = gdk_screen_height ();
-			mm = gdk_screen_height_mm ();
-			dpi_y = (((gdouble) pixels * 25.4) / (gdouble) mm);
-
-			/* XXX This used to call pango_ft2_get_context().
-			 *     Is there a better way to do this? */
-			fontmap = pango_ft2_font_map_new ();
-			pango_ft2_font_map_set_resolution (PANGO_FT2_FONT_MAP (fontmap), dpi_x, dpi_y);
-			context = pango_font_map_create_context (fontmap);
-
-			language = pango_context_get_language (gtk_context);
-			pango_context_set_language (context, language);
-			pango_context_set_base_dir (context,
-						    pango_context_get_base_dir (gtk_context));
-			pango_context_set_font_description (context,
-							    pango_context_get_font_description (gtk_context));
-
-		} else
-			context = gtk_context;
-
-		text->layout = pango_layout_new (context);
-
-		if (item->canvas->aa)
-			g_object_unref (G_OBJECT (context));
-	}
+	if (!text->layout)
+                text->layout = pango_layout_new (gtk_widget_get_pango_context (GTK_WIDGET (item->canvas)));
 
 	switch (param_id) {
 	case PROP_TEXT:
@@ -1026,8 +987,7 @@ gnome_canvas_text_set_property (GObject            *object,
 		else
 			text->pixel = gnome_canvas_get_color_pixel (item->canvas, text->rgba);
 
-		if (!item->canvas->aa)
-			set_text_gc_foreground (text);
+		set_text_gc_foreground (text);
 	}
 
 	/* Calculate text dimensions */
diff --git a/libgnomecanvas/gnome-canvas-util.c b/libgnomecanvas/gnome-canvas-util.c
index f685cf7846..1aba6fcacd 100644
--- a/libgnomecanvas/gnome-canvas-util.c
+++ b/libgnomecanvas/gnome-canvas-util.c
@@ -596,18 +596,7 @@ gnome_canvas_item_update_svp_clip (GnomeCanvasItem *item,
 void
 gnome_canvas_item_request_redraw_svp (GnomeCanvasItem *item, const ArtSVP *svp)
 {
-	GnomeCanvas *canvas;
-	ArtUta *uta;
-
-	canvas = item->canvas;
-	if (canvas->aa) {
-		if (svp != NULL) {
-			uta = art_uta_from_svp (svp);
-			gnome_canvas_request_redraw_uta (canvas, uta);
-		}
-	} else {
-		gnome_canvas_request_redraw (canvas, item->x1, item->y1, item->x2, item->y2);
-	}
+	gnome_canvas_request_redraw (item->canvas, item->x1, item->y1, item->x2, item->y2);
 }
 
 /**
diff --git a/libgnomecanvas/gnome-canvas.c b/libgnomecanvas/gnome-canvas.c
index 014c57d4c1..ecabf2a59c 100644
--- a/libgnomecanvas/gnome-canvas.c
+++ b/libgnomecanvas/gnome-canvas.c
@@ -1935,7 +1935,6 @@ group_remove (GnomeCanvasGroup *group, GnomeCanvasItem *item)
 
 enum {
 	DRAW_BACKGROUND,
-	RENDER_BACKGROUND,
 	LAST_SIGNAL
 };
 
@@ -1975,8 +1974,8 @@ static GtkLayoutClass *canvas_parent_class;
 static guint canvas_signals[LAST_SIGNAL];
 
 enum {
-	PROP_AA = 1,
-	PROP_FOCUSED_ITEM
+        PROP_0,
+	PROP_FOCUSED_ITEM,
 };
 
 /**
@@ -2020,9 +2019,6 @@ gnome_canvas_get_property (GObject    *object,
 			   GParamSpec *pspec)
 {
 	switch (prop_id) {
-	case PROP_AA:
-		g_value_set_boolean (value, GNOME_CANVAS (object)->aa);
-		break;
 	case PROP_FOCUSED_ITEM:
 		g_value_set_object (value, GNOME_CANVAS (object)->focused_item);
 		break;
@@ -2039,9 +2035,6 @@ gnome_canvas_set_property (GObject      *object,
 			   GParamSpec   *pspec)
 {
 	switch (prop_id) {
-	case PROP_AA:
-		GNOME_CANVAS (object)->aa = g_value_get_boolean (value);
-		break;
 	case PROP_FOCUSED_ITEM:
 		GNOME_CANVAS (object)->focused_item = g_value_get_object (value);
 		break;
@@ -2084,17 +2077,8 @@ gnome_canvas_class_init (GnomeCanvasClass *klass)
 	widget_class->focus_out_event = gnome_canvas_focus_out;
 
 	klass->draw_background = gnome_canvas_draw_background;
-	klass->render_background = NULL;
 	klass->request_update = gnome_canvas_request_update_real;
 
-	g_object_class_install_property (G_OBJECT_CLASS (object_class),
-					 PROP_AA,
-					 g_param_spec_boolean ("aa",
-							       "Antialiased",
-							       "The antialiasing mode of the canvas.",
-							       FALSE,
-							       G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY));
-
 	g_object_class_install_property (object_class, PROP_FOCUSED_ITEM,
 					 g_param_spec_object ("focused_item", NULL, NULL,
 					 GNOME_TYPE_CANVAS_ITEM,
@@ -2109,14 +2093,6 @@ gnome_canvas_class_init (GnomeCanvasClass *klass)
 			      gnome_canvas_marshal_VOID__OBJECT_INT_INT_INT_INT,
 			      G_TYPE_NONE, 5, GDK_TYPE_DRAWABLE,
 			      G_TYPE_INT, G_TYPE_INT, G_TYPE_INT, G_TYPE_INT);
-	canvas_signals[RENDER_BACKGROUND] =
-		g_signal_new ("render_background",
-			      G_TYPE_FROM_CLASS (object_class),
-			      G_SIGNAL_RUN_LAST,
-			      G_STRUCT_OFFSET (GnomeCanvasClass, render_background),
-			      NULL, NULL,
-			      g_cclosure_marshal_VOID__POINTER,
-			      G_TYPE_NONE, 1, G_TYPE_POINTER);
 
 	gail_canvas_init ();
 }
@@ -2158,8 +2134,6 @@ gnome_canvas_init (GnomeCanvas *canvas)
 	canvas->pick_event.crossing.x = 0;
 	canvas->pick_event.crossing.y = 0;
 
-	canvas->dither = GDK_RGB_DITHER_MAX;
-
 	/* This may not be what people want, but it is set to be turned on by
 	 * default to have the same initial behavior as the canvas in GNOME 1.4.
 	 */
@@ -2259,21 +2233,6 @@ gnome_canvas_new (void)
 	return GTK_WIDGET (g_object_new (gnome_canvas_get_type (), NULL));
 }
 
-/**
- * gnome_canvas_new_aa:
- *
- * Creates a new empty canvas in antialiased mode.
- *
- * Return value: A newly-created antialiased canvas.
- **/
-GtkWidget *
-gnome_canvas_new_aa (void)
-{
-	return GTK_WIDGET (g_object_new (GNOME_TYPE_CANVAS,
-					 "aa", TRUE,
-					 NULL));
-}
-
 /* Map handler for the canvas */
 static void
 gnome_canvas_map (GtkWidget *widget)
@@ -3004,6 +2963,9 @@ gnome_canvas_paint_rect (GnomeCanvas *canvas, gint x0, gint y0, gint x1, gint y1
 	gint draw_width, draw_height;
 	gdouble hadjustment_value;
 	gdouble vadjustment_value;
+        GdkPixmap *pixmap;
+        GdkVisual *visual;
+        gint depth;
 
 	g_return_if_fail (!canvas->need_update);
 
@@ -3036,86 +2998,32 @@ gnome_canvas_paint_rect (GnomeCanvas *canvas, gint x0, gint y0, gint x1, gint y1
 	canvas->draw_xofs = draw_x1;
 	canvas->draw_yofs = draw_y1;
 
-	if (canvas->aa) {
-		GnomeCanvasBuf buf;
-		guchar *px;
-		GdkColor *color;
-		GtkStyle *style;
-
-		px = g_new (guchar, draw_width * 3 * draw_height);
-
-		buf.buf = px;
-		buf.buf_rowstride = draw_width * 3;
-		buf.rect.x0 = draw_x1;
-		buf.rect.y0 = draw_y1;
-		buf.rect.x1 = draw_x2;
-		buf.rect.y1 = draw_y2;
-		style = gtk_widget_get_style (widget);
-		color = &style->bg[GTK_STATE_NORMAL];
-		buf.bg_color =
-			(((color->red & 0xff00) << 8) |
-			(color->green & 0xff00) | (color->blue >> 8));
-		buf.is_bg = 1;
-		buf.is_buf = 0;
-
-		g_signal_emit (G_OBJECT (canvas), canvas_signals[RENDER_BACKGROUND], 0, &buf);
+        visual = gtk_widget_get_visual (widget);
+        depth = gdk_visual_get_depth (visual);
 
-		if (canvas->root->flags & GNOME_CANVAS_ITEM_VISIBLE)
-			(* GNOME_CANVAS_ITEM_GET_CLASS (canvas->root)->render) (canvas->root, &buf);
-
-		if (buf.is_bg) {
-			gdk_gc_set_rgb_fg_color (canvas->pixmap_gc, color);
-			gdk_draw_rectangle (bin_window,
-					    canvas->pixmap_gc,
-					    TRUE,
-					    (draw_x1 + canvas->zoom_xofs),
-					    (draw_y1 + canvas->zoom_yofs),
-					    draw_width, draw_height);
-		} else {
-			gdk_draw_rgb_image_dithalign (bin_window,
-						      canvas->pixmap_gc,
-						      (draw_x1 + canvas->zoom_xofs),
-						      (draw_y1 + canvas->zoom_yofs),
-						      draw_width, draw_height,
-						      canvas->dither,
-						      buf.buf,
-						      buf.buf_rowstride,
-						      draw_x1, draw_y1);
-		}
+        pixmap = gdk_pixmap_new (bin_window,
+                                 draw_width, draw_height, depth);
 
-		g_free (px);
-	} else {
-		GdkPixmap *pixmap;
-		GdkVisual *visual;
-		gint depth;
+        g_signal_emit (G_OBJECT (canvas), canvas_signals[DRAW_BACKGROUND], 0, pixmap,
+                       draw_x1, draw_y1, draw_width, draw_height);
 
-		visual = gtk_widget_get_visual (widget);
-		depth = gdk_visual_get_depth (visual);
+        if (canvas->root->flags & GNOME_CANVAS_ITEM_VISIBLE)
+                (* GNOME_CANVAS_ITEM_GET_CLASS (canvas->root)->draw) (
+                        canvas->root, pixmap,
+                        draw_x1, draw_y1,
+                        draw_width, draw_height);
 
-		pixmap = gdk_pixmap_new (bin_window,
-					 draw_width, draw_height, depth);
+        /* Copy the pixmap to the window and clean up */
 
-		g_signal_emit (G_OBJECT (canvas), canvas_signals[DRAW_BACKGROUND], 0, pixmap,
-			       draw_x1, draw_y1, draw_width, draw_height);
+        gdk_draw_drawable (bin_window,
+                           canvas->pixmap_gc,
+                           pixmap,
+                           0, 0,
+                           draw_x1 + canvas->zoom_xofs,
+                           draw_y1 + canvas->zoom_yofs,
+                           draw_width, draw_height);
 
-		if (canvas->root->flags & GNOME_CANVAS_ITEM_VISIBLE)
-			(* GNOME_CANVAS_ITEM_GET_CLASS (canvas->root)->draw) (
-				canvas->root, pixmap,
-				draw_x1, draw_y1,
-				draw_width, draw_height);
-
-		/* Copy the pixmap to the window and clean up */
-
-		gdk_draw_drawable (bin_window,
-				   canvas->pixmap_gc,
-				   pixmap,
-				   0, 0,
-				   draw_x1 + canvas->zoom_xofs,
-				   draw_y1 + canvas->zoom_yofs,
-				   draw_width, draw_height);
-
-		g_object_unref (pixmap);
-	}
+        g_object_unref (pixmap);
 }
 
 /* Expose handler for the canvas */
@@ -4199,40 +4107,6 @@ gnome_canvas_set_stipple_origin (GnomeCanvas *canvas, GdkGC *gc)
 	gdk_gc_set_ts_origin (gc, -canvas->draw_xofs, -canvas->draw_yofs);
 }
 
-/**
- * gnome_canvas_set_dither:
- * @canvas: A canvas.
- * @dither: Type of dithering used to render an antialiased canvas.
- *
- * Controls dithered rendering for antialiased canvases. The value of
- * dither should be #GDK_RGB_DITHER_NONE, #GDK_RGB_DITHER_NORMAL, or
- * #GDK_RGB_DITHER_MAX. The default canvas setting is
- * #GDK_RGB_DITHER_NORMAL.
- **/
-void
-gnome_canvas_set_dither (GnomeCanvas *canvas, GdkRgbDither dither)
-{
-	g_return_if_fail (GNOME_IS_CANVAS (canvas));
-
-	canvas->dither = dither;
-}
-
-/**
- * gnome_canvas_get_dither:
- * @canvas: A canvas.
- *
- * Returns the type of dithering used to render an antialiased canvas.
- *
- * Return value: The dither setting.
- **/
-GdkRgbDither
-gnome_canvas_get_dither (GnomeCanvas *canvas)
-{
-	g_return_val_if_fail (GNOME_IS_CANVAS (canvas), GDK_RGB_DITHER_NONE);
-
-	return canvas->dither;
-}
-
 static gboolean
 boolean_handled_accumulator (GSignalInvocationHint *ihint,
 			     GValue                *return_accu,
diff --git a/libgnomecanvas/gnome-canvas.h b/libgnomecanvas/gnome-canvas.h
index c5d6cffe3b..b8a7308d13 100644
--- a/libgnomecanvas/gnome-canvas.h
+++ b/libgnomecanvas/gnome-canvas.h
@@ -469,12 +469,6 @@ struct _GnomeCanvas {
 
 	/* For use by internal pick_current_item() function */
 	guint in_repick : 1;
-
-	/* Whether the canvas is in antialiased mode or not */
-	guint aa : 1;
-
-	/* Which dither mode to use for antialiased mode drawing */
-	GdkRgbDither dither;
 };
 
 struct _GnomeCanvasClass {
@@ -486,12 +480,6 @@ struct _GnomeCanvasClass {
 	void (* draw_background) (GnomeCanvas *canvas, GdkDrawable *drawable,
 				  gint x, gint y, gint width, gint height);
 
-	/* Render the background for the buffer given. The buf data structure
-	 * contains both a pointer to a packed 24-bit RGB array, and the
-	 * coordinates. This method is only used for antialiased canvases.
-	 */
-	void (* render_background) (GnomeCanvas *canvas, GnomeCanvasBuf *buf);
-
 	/* Private Virtual methods for groping the canvas inside bonobo */
 	void (* request_update) (GnomeCanvas *canvas);
 
@@ -510,13 +498,6 @@ GType gnome_canvas_get_type (void) G_GNUC_CONST;
  */
 GtkWidget *gnome_canvas_new (void);
 
-/* Creates a new antialiased empty canvas.  You should push the GdkRgb colormap
- * and visual for this.
- */
-#ifndef GNOME_EXCLUDE_EXPERIMENTAL
-GtkWidget *gnome_canvas_new_aa (void);
-#endif
-
 /* Returns the root canvas item group of the canvas */
 GnomeCanvasGroup *gnome_canvas_root (GnomeCanvas *canvas);
 
@@ -608,16 +589,6 @@ gulong gnome_canvas_get_color_pixel (GnomeCanvas *canvas,
  */
 void gnome_canvas_set_stipple_origin (GnomeCanvas *canvas, GdkGC *gc);
 
-/* Controls the dithering used when the canvas renders.
- * Only applicable to antialiased canvases - ignored by non-antialiased canvases.
- */
-void gnome_canvas_set_dither (GnomeCanvas *canvas, GdkRgbDither dither);
-
-/* Returns the dither mode of an antialiased canvas.
- * Only applicable to antialiased canvases - ignored by non-antialiased canvases.
- */
-GdkRgbDither gnome_canvas_get_dither (GnomeCanvas *canvas);
-
 G_END_DECLS
 
 #endif