window-actor: Add back antialiased window corners
This simply adds fancy arcs to the mask texture. It's still not painted with GTK+ yet. https://bugzilla.gnome.org/show_bug.cgi?id=676052
This commit is contained in:
Jasper St. Pierre
parent
c47de98c88
commit
60c05a0dac
@ -1991,9 +1991,112 @@ meta_window_actor_sync_visibility (MetaWindowActor *self)
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}
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}
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#define TAU (2*M_PI)
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static void
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generate_mask (MetaWindowActor *self,
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install_corners (MetaWindow *window,
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MetaFrameBorders *borders,
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cairo_t *cr)
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{
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float top_left, top_right, bottom_left, bottom_right;
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int x, y;
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MetaRectangle outer;
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meta_frame_get_corner_radiuses (window->frame,
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&top_left,
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&top_right,
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&bottom_left,
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&bottom_right);
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meta_window_get_outer_rect (window, &outer);
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/* top left */
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x = borders->invisible.left;
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y = borders->invisible.top;
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cairo_arc (cr,
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x + top_left,
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y + top_left,
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top_left,
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2 * TAU / 4,
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3 * TAU / 4);
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/* top right */
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x = borders->invisible.left + outer.width - top_right;
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y = borders->invisible.top;
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cairo_arc (cr,
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x,
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y + top_right,
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top_right,
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3 * TAU / 4,
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4 * TAU / 4);
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/* bottom right */
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x = borders->invisible.left + outer.width - bottom_right;
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y = borders->invisible.top + outer.height - bottom_right;
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cairo_arc (cr,
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x,
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y,
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bottom_right,
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0 * TAU / 4,
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1 * TAU / 4);
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/* bottom left */
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x = borders->invisible.left;
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y = borders->invisible.top + outer.height - bottom_left;
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cairo_arc (cr,
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x + bottom_left,
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y,
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bottom_left,
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1 * TAU / 4,
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2 * TAU / 4);
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cairo_set_source_rgba (cr, 1, 1, 1, 1);
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cairo_fill (cr);
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}
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static void
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scan_visible_region (guchar *mask_data,
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int stride,
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cairo_region_t *scan_area,
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cairo_region_t *union_against)
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{
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int i, n_rects;
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n_rects = cairo_region_num_rectangles (scan_area);
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for (i = 0; i < n_rects; i++)
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{
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int x, y;
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cairo_rectangle_int_t rect;
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cairo_region_get_rectangle (scan_area, i, &rect);
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for (y = rect.y; y < (rect.y + rect.height); y++)
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{
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for (x = rect.x; x < (rect.x + rect.width); x++)
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{
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int w = x;
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while (mask_data[y * stride + w] == 255 && w < (rect.x + rect.width))
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w++;
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if (w > 0)
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{
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cairo_rectangle_int_t tmp = { x, y, w - x, 1 };
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cairo_region_union_rectangle (union_against, &tmp);
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x = w;
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}
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}
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}
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}
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}
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static void
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build_and_scan_frame_mask (MetaWindowActor *self,
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MetaFrameBorders *borders,
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cairo_rectangle_int_t *client_area,
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cairo_region_t *shape_region)
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{
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MetaWindowActorPrivate *priv = self->priv;
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@ -2026,6 +2129,24 @@ generate_mask (MetaWindowActor *self,
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gdk_cairo_region (cr, shape_region);
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cairo_fill (cr);
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if (priv->window->frame != NULL)
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{
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cairo_region_t *frame_paint_region;
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cairo_rectangle_int_t rect = { 0, 0, tex_width, tex_height };
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/* Make sure we don't paint the frame over the client window. */
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frame_paint_region = cairo_region_create_rectangle (&rect);
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cairo_region_subtract_rectangle (frame_paint_region, client_area);
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gdk_cairo_region (cr, frame_paint_region);
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cairo_clip (cr);
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install_corners (priv->window, borders, cr);
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cairo_surface_flush (surface);
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scan_visible_region (mask_data, stride, frame_paint_region, shape_region);
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}
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cairo_destroy (cr);
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cairo_surface_destroy (surface);
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@ -2066,44 +2187,30 @@ check_needs_reshape (MetaWindowActor *self)
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MetaDisplay *display = meta_screen_get_display (screen);
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MetaFrameBorders borders;
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cairo_region_t *region;
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cairo_rectangle_int_t client_area;
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if (!priv->needs_reshape)
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return;
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meta_shaped_texture_set_mask_texture (META_SHAPED_TEXTURE (priv->actor), COGL_INVALID_HANDLE);
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meta_window_actor_clear_shape_region (self);
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meta_frame_calc_borders (priv->window->frame, &borders);
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region = meta_window_get_frame_bounds (priv->window);
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if (region != NULL)
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{
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/* This returns the window's internal frame bounds region,
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* so we need to copy it because we modify it below. */
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region = cairo_region_copy (region);
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}
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else
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{
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/* If we have no region, we have no frame. We have no frame,
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* so just use the bounding region instead */
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region = cairo_region_copy (priv->bounding_region);
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}
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client_area.x = borders.total.left;
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client_area.y = borders.total.top;
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client_area.width = priv->window->rect.width;
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client_area.height = priv->window->rect.height;
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meta_shaped_texture_set_mask_texture (META_SHAPED_TEXTURE (priv->actor), COGL_INVALID_HANDLE);
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meta_window_actor_clear_shape_region (self);
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#ifdef HAVE_SHAPE
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if (priv->window->has_shape)
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{
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/* Translate the set of XShape rectangles that we
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* get from the X server to a cairo_region. */
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Display *xdisplay = meta_display_get_xdisplay (display);
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XRectangle *rects;
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int n_rects, ordering;
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cairo_rectangle_int_t client_area;
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client_area.width = priv->window->rect.width;
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client_area.height = priv->window->rect.height;
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client_area.x = borders.total.left;
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client_area.y = borders.total.top;
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/* Punch out client area. */
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cairo_region_subtract_rectangle (region, &client_area);
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cairo_rectangle_int_t *cairo_rects = NULL;
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meta_error_trap_push (display);
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rects = XShapeGetRectangles (xdisplay,
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@ -2116,20 +2223,34 @@ check_needs_reshape (MetaWindowActor *self)
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if (rects)
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{
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int i;
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cairo_rects = g_new (cairo_rectangle_int_t, n_rects);
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for (i = 0; i < n_rects; i ++)
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{
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cairo_rectangle_int_t rect = { rects[i].x + client_area.x,
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rects[i].y + client_area.y,
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rects[i].width,
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rects[i].height };
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cairo_region_union_rectangle (region, &rect);
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cairo_rects[i].x = rects[i].x + client_area.x;
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cairo_rects[i].y = rects[i].y + client_area.y;
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cairo_rects[i].width = rects[i].width;
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cairo_rects[i].height = rects[i].height;
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}
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XFree (rects);
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}
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}
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#endif
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generate_mask (self, &borders, region);
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region = cairo_region_create_rectangles (cairo_rects, n_rects);
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g_free (cairo_rects);
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}
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else
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#endif
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{
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/* If we don't have a shape on the server, that means that
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* we have an implicit shape of one rectangle covering the
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* entire window. */
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region = cairo_region_create_rectangle (&client_area);
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}
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/* This takes the region, generates a mask using GTK+
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* and scans the mask looking for all opaque pixels,
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* adding it to region.
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*/
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build_and_scan_frame_mask (self, &borders, &client_area, region);
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meta_window_actor_update_shape_region (self, region);
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cairo_region_destroy (region);
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