[gtk+/client-side-decorations] Remove drop-shadow code.

[Cody Russell <bratsche src gnome org>]

commit f48314129acb6ae6b64f6a6789a8464a34687977
Author: Cody Russell <bratsche gnome org>
Date:   Wed May 19 15:31:48 2010 -0500

    Remove drop-shadow code.

 gtk/gtkstyle.c |  254 --------------------------------------------------------
 1 files changed, 0 insertions(+), 254 deletions(-)
---
diff --git a/gtk/gtkstyle.c b/gtk/gtkstyle.c
index 58ce5cb..03610b7 100644
--- a/gtk/gtkstyle.c
+++ b/gtk/gtkstyle.c
@@ -26,7 +26,6 @@
 
 #include "config.h"
 #include <math.h>
-#include <pixman.h>
 #include <stdlib.h>
 #include <string.h>
 #include <gobject/gvaluecollector.h>
@@ -3492,244 +3491,6 @@ option_menu_get_props (GtkWidget      *widget,
     *indicator_spacing = default_option_indicator_spacing;
 }
 
-/* gaussian blur kernel */
-static pixman_fixed_t *
-create_blur_kernel (gint     radius,
-                    gint    *length)
-{
-  const gdouble   radiusf = fabs (radius) + 1.0f;
-  const gdouble   sigma = sqrt (-(radiusf * radiusf) / (2.0f * log (1.0f / 255.0f)));
-  const gdouble   scale2 = 2.0f * sigma * sigma;
-  const gdouble   scale1 = 1.0f / (G_PI * scale2);
-  const gint      size = 2 * radius + 1;
-  const gint      n_params = size * size;
-  pixman_fixed_t *params;
-  gdouble        *tmp;
-  gdouble         sum;
-  gint            x;
-  gint            y;
-  gint            i;
-
-  tmp = g_newa (double, n_params);
-
-  for (i = 0, sum = 0, x = -radius; x <= radius; ++x)
-    {
-      for (y = -radius; y <= radius; ++y, ++i)
-        {
-          const gdouble u = x * x;
-          const gdouble v = y * y;
-
-          tmp[i] = scale1 * exp (-(u + v) / scale2);
-
-          sum += tmp[i];
-        }
-    }
-
-  params = g_new (pixman_fixed_t, n_params + 2);
-
-  params[0] = pixman_int_to_fixed (size);
-  params[1] = pixman_int_to_fixed (size);
-
-  for (i = 0; i < n_params; ++i)
-    params[2 + i] = pixman_double_to_fixed (tmp[i] / sum);
-
-  if (length)
-    *length = n_params + 2;
-
-  return params;
-}
-
-static void
-blur_image_surface (cairo_surface_t *surface,
-                    gint             radius)
-{
-  cairo_format_t  format;
-  pixman_fixed_t *params = NULL;
-  gint            n_params;
-  pixman_image_t *src;
-  gint            w;
-  gint            h;
-  gint            s;
-  gpointer        p;
-
-  if (radius == 0 ||
-      cairo_surface_status (surface) != CAIRO_STATUS_SUCCESS ||
-      cairo_surface_get_type (surface) != CAIRO_SURFACE_TYPE_IMAGE)
-    {
-      return;
-    }
-
-  format = cairo_image_surface_get_format (surface);
-  if (format != CAIRO_FORMAT_A8    &&
-      format != CAIRO_FORMAT_RGB24 &&
-      format != CAIRO_FORMAT_ARGB32)
-    {
-      return;
-    }
-
-  cairo_surface_flush (surface);
-
-  w = cairo_image_surface_get_width (surface);
-  h = cairo_image_surface_get_height (surface);
-  s = cairo_image_surface_get_stride (surface);
-
-  p = cairo_image_surface_get_data (surface);
-  src = pixman_image_create_bits (PIXMAN_a8r8g8b8, w, h, p, s);
-
-  params = create_blur_kernel (radius, &n_params);
-  pixman_image_set_filter (src,
-                           PIXMAN_FILTER_CONVOLUTION,
-                           params,
-                           n_params);
-  g_free (params);
-
-  pixman_image_composite (PIXMAN_OP_SRC,
-                          src,
-                          NULL,
-                          src,
-                          0, 0,
-                          0, 0,
-                          0, 0,
-                          w, h);
-
-  pixman_image_unref (src);
-
-  cairo_surface_mark_dirty (surface);
-}
-
-typedef struct _TileData
-{
-  guchar *data;
-  cairo_format_t format;
-  gint width;
-  gint height;
-  gint stride;
-} TileData;
-
-/* XXX - leak */
-static TileData *tile = NULL;
-
-static void
-paint_window_shadow (cairo_t *cr,
-                     gint     width,
-                     gint     height,
-                     gint     shadow_radius,
-                     gint     corner_radius)
-{
-  cairo_surface_t *tmp_surface = NULL;
-  cairo_surface_t *new_surface = NULL;
-  cairo_pattern_t *pattern     = NULL;
-  cairo_t         *cr_surf     = NULL;
-  cairo_matrix_t   matrix;
-
-  if (!tile)
-    {
-      guchar *data;
-
-      tmp_surface = cairo_image_surface_create (CAIRO_FORMAT_ARGB32,
-                                                4 * shadow_radius,
-                                                4 * shadow_radius);
-      if (cairo_surface_status (tmp_surface) != CAIRO_STATUS_SUCCESS)
-        return;
-
-      cr_surf = cairo_create (tmp_surface);
-      if (cairo_status (cr_surf) != CAIRO_STATUS_SUCCESS)
-        {
-          cairo_surface_destroy (tmp_surface);
-          return;
-        }
-
-      cairo_scale (cr_surf, 1.0f, 1.0f);
-      cairo_set_operator (cr_surf, CAIRO_OPERATOR_CLEAR);
-      cairo_paint (cr_surf);
-      cairo_set_operator (cr_surf, CAIRO_OPERATOR_OVER);
-      cairo_set_source_rgba (cr_surf, 0.0f, 0.0f, 0.0f, 0.75f);
-      cairo_arc (cr_surf,
-                 2 * shadow_radius,
-                 2 * shadow_radius,
-                 2.0f * corner_radius,
-                 0.0f,
-                 360.0f * (G_PI / 180.f));
-      cairo_fill (cr_surf);
-      cairo_destroy (cr_surf);
-
-      blur_image_surface (tmp_surface, shadow_radius);
-
-      tile = g_new0 (TileData, 1);
-      tile->format = cairo_image_surface_get_format (tmp_surface);
-      tile->width = cairo_image_surface_get_width (tmp_surface) / 2;
-      tile->height = cairo_image_surface_get_height (tmp_surface) / 2;
-      tile->stride = cairo_image_surface_get_stride (tmp_surface);
-
-      data = cairo_image_surface_get_data (tmp_surface);
-
-      tile->data = g_malloc (tile->height * tile->stride);
-      memcpy (tile->data, data, tile->height * tile->stride);
-    }
-
-  new_surface = cairo_image_surface_create_for_data (tile->data,
-                                                     tile->format,
-                                                     tile->width,
-                                                     tile->height,
-                                                     tile->stride);
-
-  pattern = cairo_pattern_create_for_surface (new_surface);
-  if (cairo_pattern_status (pattern) != CAIRO_STATUS_SUCCESS)
-    {
-      cairo_surface_destroy (tmp_surface);
-      cairo_surface_destroy (new_surface);
-      return;
-    }
-
-  /* top left */
-  cairo_pattern_set_extend (pattern, CAIRO_EXTEND_PAD);
-  cairo_set_source (cr, pattern);
-  cairo_rectangle (cr,
-                   0.0f,
-                   0.0f,
-                   width - 2 * shadow_radius,
-                   2 * shadow_radius);
-  cairo_fill (cr);
-
-  /* bottom left */
-  cairo_matrix_init_scale (&matrix, 1.0f, -1.0f);
-  cairo_matrix_translate (&matrix, 0.0f, -height);
-  cairo_pattern_set_matrix (pattern, &matrix);
-  cairo_rectangle (cr,
-                   0.0f,
-                   2 * shadow_radius,
-                   2 * shadow_radius,
-                   height - 2 * shadow_radius);
-  cairo_fill (cr);
-
-  /* top right */
-  cairo_matrix_init_scale (&matrix, -1.0f, 1.0f);
-  cairo_matrix_translate (&matrix, -width, 0.0f);
-  cairo_pattern_set_matrix (pattern, &matrix);
-  cairo_rectangle (cr,
-                   width - 2 * shadow_radius,
-                   0.0f,
-                   2 * shadow_radius,
-                   height - 2 * shadow_radius);
-  cairo_fill (cr);
-
-  /* bottom right */
-  cairo_matrix_init_scale (&matrix, -1.0f, -1.0f);
-  cairo_matrix_translate (&matrix, -width, -height);
-  cairo_pattern_set_matrix (pattern, &matrix);
-  cairo_rectangle (cr,
-                   2 * shadow_radius,
-                   height - 2 * shadow_radius,
-                   width - 2 * shadow_radius,
-                   2 * shadow_radius);
-  cairo_fill (cr);
-
-
-  cairo_pattern_destroy (pattern);
-  cairo_surface_destroy (tmp_surface);
-  cairo_surface_destroy (new_surface);
-}
-
 static void
 paint_decorated_window (GtkStyle *style,
                         GdkWindow *window,
@@ -3777,21 +3538,6 @@ paint_decorated_window (GtkStyle *style,
     }
   else
     {
-      gboolean paint_shadows;
-
-      gtk_widget_style_get (widget,
-                            "client-side-drop-shadows", &paint_shadows,
-                            NULL);
-
-      if (paint_shadows)
-        {
-          paint_window_shadow (cr,
-                               width,
-                               height,
-                               x / 2 + 2.5,
-                               radius);
-        }
-
       cairo_move_to (cr, hmargin, vmargin + radius);
 
       cairo_arc (cr, hmargin + radius, vmargin + radius,