Esempi in C++ (Cpp) per _gtk_css_shadows_value_paint_layout

Esempio n. 1

/**
 * gtk_snapshot_render_layout:
 * @snapshot: a #GtkSnapshot
 * @context: the #GtkStyleContext to use
 * @x: X origin of the rectangle
 * @y: Y origin of the rectangle
 * @layout: the #PangoLayout to render
 *
 * Creates a render node for rendering @layout according to the style
 * information in @context, and appends it to the current node of @snapshot,
 * without changing the current node.
 *
 * Since: 3.90
 */
void
gtk_snapshot_render_layout (GtkSnapshot     *snapshot,
                            GtkStyleContext *context,
                            gdouble          x,
                            gdouble          y,
                            PangoLayout     *layout)
{
  const GdkRGBA *fg_color;
  graphene_rect_t bounds;
  GtkBorder shadow_extents;
  PangoRectangle ink_rect;
  GtkCssValue *shadow;
  cairo_t *cr;

  g_return_if_fail (snapshot != NULL);
  g_return_if_fail (GTK_IS_STYLE_CONTEXT (context));
  g_return_if_fail (PANGO_IS_LAYOUT (layout));

  fg_color = _gtk_css_rgba_value_get_rgba (_gtk_style_context_peek_property (context, GTK_CSS_PROPERTY_COLOR));
  shadow = _gtk_style_context_peek_property (context, GTK_CSS_PROPERTY_TEXT_SHADOW);
  pango_layout_get_pixel_extents (layout, &ink_rect, NULL);
  _gtk_css_shadows_value_get_extents (shadow, &shadow_extents);
  graphene_rect_init (&bounds,
                      ink_rect.x - shadow_extents.left,
                      ink_rect.y - shadow_extents.top,
                      ink_rect.width + shadow_extents.left + shadow_extents.right,
                      ink_rect.height + shadow_extents.top + shadow_extents.bottom);

  gtk_snapshot_translate_2d (snapshot, x, y);

  cr = gtk_snapshot_append_cairo_node (snapshot, &bounds, "Text<%dchars>", pango_layout_get_character_count (layout));

  _gtk_css_shadows_value_paint_layout (shadow, cr, layout);

  gdk_cairo_set_source_rgba (cr, fg_color);
  pango_cairo_show_layout (cr, layout);

  cairo_destroy (cr);
  gtk_snapshot_translate_2d (snapshot, -x, -y);
}

Esempio n. 2

File: gtkrender.c Progetto: Vort/gtk

static void
gtk_do_render_layout (GtkStyleContext *context,
                      cairo_t         *cr,
                      gdouble          x,
                      gdouble          y,
                      PangoLayout     *layout)
{
  const GdkRGBA *fg_color;

  cairo_save (cr);
  fg_color = _gtk_css_rgba_value_get_rgba (_gtk_style_context_peek_property (context, GTK_CSS_PROPERTY_COLOR));

  prepare_context_for_layout (cr, x, y, layout);

  _gtk_css_shadows_value_paint_layout (_gtk_style_context_peek_property (context, GTK_CSS_PROPERTY_TEXT_SHADOW),
                                       cr, layout);

  gdk_cairo_set_source_rgba (cr, fg_color);
  pango_cairo_show_layout (cr, layout);

  cairo_restore (cr);
}