cssshadow: add a method to get the size of a shadows value

The method returns the size of each side of a GtkCssShadowsValue.

diff --git a/gtk/gtkcssshadowsvalue.c b/gtk/gtkcssshadowsvalue.c
index a71f4fe08f52afa643ea6dd2e977571518276139..324949176a4677d2ff182aaca7b3324409976dcc 100644 (file)
--- a/gtk/gtkcssshadowsvalue.c
+++ b/gtk/gtkcssshadowsvalue.c
@@ -300,3 +300,37 @@ _gtk_css_shadows_value_paint_box (const GtkCssValue   *shadows,
         _gtk_css_shadow_value_paint_box (shadows->values[i], cr, padding_box);
     }
 }
+
+void
+_gtk_css_shadows_value_get_extents (const GtkCssValue *shadows,
+                                    GtkBorder         *border)
+{
+  guint i;
+  GtkBorder b = { 0 };
+  const GtkCssValue *shadow;
+  gdouble hoffset, voffset, spread, radius;
+
+  g_return_if_fail (shadows->class == &GTK_CSS_VALUE_SHADOWS);
+
+  for (i = 0; i < shadows->len; i++)
+    {
+      shadow = shadows->values[i];
+
+      if (_gtk_css_shadow_value_get_inset (shadow))
+        continue;
+
+      _gtk_css_shadow_value_get_geometry (shadow,
+                                          &hoffset, &voffset,
+                                          &radius, &spread);
+
+      b.top = MAX (0, radius + spread - voffset);
+      b.right = MAX (0, radius + spread + hoffset);
+      b.bottom = MAX (0, radius + spread + voffset);
+      b.left = MAX (0, radius + spread - hoffset);
+
+      border->top = MAX (border->top, b.top);
+      border->right = MAX (border->right, b.right);
+      border->bottom = MAX (border->bottom, b.bottom);
+      border->left = MAX (border->left, b.left);
+    }
+}

diff --git a/gtk/gtkcssshadowsvalueprivate.h b/gtk/gtkcssshadowsvalueprivate.h
index 7ee619e8dec28ac23499dca35bb42ba8b8a0c8e0..2b227bd5a85ef7215b8aa985c75fcf28eb3d8638 100644 (file)
--- a/gtk/gtkcssshadowsvalueprivate.h
+++ b/gtk/gtkcssshadowsvalueprivate.h
@@ -49,6 +49,9 @@ void            _gtk_css_shadows_value_paint_box      (const GtkCssValue
                                                        const GtkRoundedBox      *padding_box,
                                                        gboolean                  inset);
 
+void            _gtk_css_shadows_value_get_extents    (const GtkCssValue        *shadows,
+                                                       GtkBorder                *border);
+
 G_END_DECLS
 
 #endif /* __GTK_CSS_SHADOWS_VALUE_H__ */

diff --git a/gtk/gtkcssshadowvalue.c b/gtk/gtkcssshadowvalue.c
index 6e61cab42628e592751d1607aa1defe259f0ee15..4e7ca65d2615bd76527e62f89e4efdfcb21b7b85 100644 (file)
--- a/gtk/gtkcssshadowvalue.c
+++ b/gtk/gtkcssshadowvalue.c
@@ -453,6 +453,26 @@ _gtk_css_shadow_value_get_inset (const GtkCssValue *shadow)
   return shadow->inset;
 }
 
+void
+_gtk_css_shadow_value_get_geometry (const GtkCssValue *shadow,
+                                    gdouble           *hoffset,
+                                    gdouble           *voffset,
+                                    gdouble           *radius,
+                                    gdouble           *spread)
+{
+  g_return_if_fail (shadow->class == &GTK_CSS_VALUE_SHADOW);
+
+  if (hoffset != NULL)
+    *hoffset = _gtk_css_number_value_get (shadow->hoffset, 0);
+  if (voffset != NULL)
+    *voffset = _gtk_css_number_value_get (shadow->voffset, 0);
+
+  if (radius != NULL)
+    *radius = _gtk_css_number_value_get (shadow->radius, 0);
+  if (spread != NULL)
+    *spread = _gtk_css_number_value_get (shadow->spread, 0);
+}
+
 void
 _gtk_css_shadow_value_paint_box (const GtkCssValue   *shadow,
                                  cairo_t             *cr,

diff --git a/gtk/gtkcssshadowvalueprivate.h b/gtk/gtkcssshadowvalueprivate.h
index 0688fc3301cdfcb180c1439f1a2059bc87efaea9..e46b303631814b63f1901ef2692b880049048d9e 100644 (file)
--- a/gtk/gtkcssshadowvalueprivate.h
+++ b/gtk/gtkcssshadowvalueprivate.h
@@ -36,6 +36,12 @@ GtkCssValue *   _gtk_css_shadow_value_parse           (GtkCssParser
 
 gboolean        _gtk_css_shadow_value_get_inset       (const GtkCssValue        *shadow);
 
+void            _gtk_css_shadow_value_get_geometry    (const GtkCssValue        *shadow,
+                                                       gdouble                  *hoffset,
+                                                       gdouble                  *voffset,
+                                                       gdouble                  *radius,
+                                                       gdouble                  *spread);
+
 void            _gtk_css_shadow_value_paint_layout    (const GtkCssValue        *shadow,
                                                        cairo_t                  *cr,
                                                        PangoLayout              *layout);