[gtk+/wip/matthiasc/gadget: 27/34] frame: Convert to gadgets



commit 94c56cebef74e92666ceba6760ba78fbc239d3e4
Author: Matthias Clasen <mclasen redhat com>
Date:   Wed Dec 9 23:00:35 2015 -0500

    frame: Convert to gadgets
    
    As part of this conversion, remove the hardcoded padding around
    the label.
    
    Unfortunately, we cannot use the main gadget for drawing the frame
    decoration, since we want to draw a custom border instead of the
    stock css border that gadgets insist on drawing for us. Therefore,
    add an extra css node with name decoration and use it just for
    rendering the frame.

 gtk/gtkframe.c                           |  497 ++++++++++++++++-------------
 gtk/theme/Adwaita/_common.scss           |    7 +-
 gtk/theme/Adwaita/gtk-contained-dark.css |   13 +-
 gtk/theme/Adwaita/gtk-contained.css      |   13 +-
 4 files changed, 295 insertions(+), 235 deletions(-)
---
diff --git a/gtk/gtkframe.c b/gtk/gtkframe.c
index a875e58..0350d37 100644
--- a/gtk/gtkframe.c
+++ b/gtk/gtkframe.c
@@ -31,6 +31,13 @@
 #include "gtkintl.h"
 #include "gtkbuildable.h"
 #include "gtkwidgetpath.h"
+#include "gtkcssnodeprivate.h"
+#include "gtkcsscustomgadgetprivate.h"
+#include "gtkwidgetprivate.h"
+#include "gtkcontainerprivate.h"
+#include "gtkstylecontextprivate.h"
+#include "gtkcssstylepropertyprivate.h"
+#include "gtklabel.h"
 
 #include "a11y/gtkframeaccessible.h"
 
@@ -79,6 +86,9 @@ struct _GtkFramePrivate
   /* Properties */
   GtkWidget *label_widget;
 
+  GtkCssGadget *gadget;
+  GtkCssGadget *border_gadget;
+
   gint16 shadow_type;
   gfloat label_xalign;
   gfloat label_yalign;
@@ -100,6 +110,7 @@ enum {
 
 static GParamSpec *frame_props[LAST_PROP];
 
+static void gtk_frame_finalize     (GObject      *object);
 static void gtk_frame_set_property (GObject      *object,
                                    guint         param_id,
                                    const GValue *value,
@@ -145,6 +156,34 @@ static void gtk_frame_get_preferred_width_for_height(GtkWidget           *layout
                                                     gint                 width,
                                                     gint                *minimum_height,
                                                     gint                *natural_height);
+static void gtk_frame_state_flags_changed (GtkWidget     *widget,
+                                           GtkStateFlags  previous_state);
+
+static void     gtk_frame_measure        (GtkCssGadget        *gadget,
+                                          GtkOrientation       orientation,
+                                          gint                 for_size,
+                                          gint                *minimum_size,
+                                          gint                *natural_size,
+                                          gint                *minimum_baseline,
+                                          gint                *natural_baseline,
+                                          gpointer             data);
+static void     gtk_frame_allocate       (GtkCssGadget        *gadget,
+                                          const GtkAllocation *allocation,
+                                          int                  baseline,
+                                          GtkAllocation       *out_clip,
+                                          gpointer             data);
+static void     gtk_frame_allocate_border (GtkCssGadget        *gadget,
+                                          const GtkAllocation *allocation,
+                                          int                  baseline,
+                                          GtkAllocation       *out_clip,
+                                          gpointer             data);
+static gboolean gtk_frame_render         (GtkCssGadget        *gadget,
+                                          cairo_t             *cr,
+                                          int                  x,
+                                          int                  y,
+                                          int                  width,
+                                          int                  height,
+                                          gpointer             data);
 
 
 G_DEFINE_TYPE_WITH_CODE (GtkFrame, gtk_frame, GTK_TYPE_BIN,
@@ -163,6 +202,7 @@ gtk_frame_class_init (GtkFrameClass *class)
   widget_class = GTK_WIDGET_CLASS (class);
   container_class = GTK_CONTAINER_CLASS (class);
 
+  gobject_class->finalize = gtk_frame_finalize;
   gobject_class->set_property = gtk_frame_set_property;
   gobject_class->get_property = gtk_frame_get_property;
 
@@ -212,6 +252,7 @@ gtk_frame_class_init (GtkFrameClass *class)
   widget_class->get_preferred_height           = gtk_frame_get_preferred_height;
   widget_class->get_preferred_height_for_width = gtk_frame_get_preferred_height_for_width;
   widget_class->get_preferred_width_for_height = gtk_frame_get_preferred_width_for_height;
+  widget_class->state_flags_changed            = gtk_frame_state_flags_changed;
 
   container_class->remove = gtk_frame_remove;
   container_class->forall = gtk_frame_forall;
@@ -246,6 +287,7 @@ static void
 gtk_frame_init (GtkFrame *frame)
 {
   GtkFramePrivate *priv;
+  GtkCssNode *widget_node;
 
   frame->priv = gtk_frame_get_instance_private (frame); 
   priv = frame->priv;
@@ -254,6 +296,36 @@ gtk_frame_init (GtkFrame *frame)
   priv->shadow_type = GTK_SHADOW_ETCHED_IN;
   priv->label_xalign = 0.0;
   priv->label_yalign = 0.5;
+
+  widget_node = gtk_widget_get_css_node (GTK_WIDGET (frame));
+  priv->gadget = gtk_css_custom_gadget_new_for_node (widget_node,
+                                                     GTK_WIDGET (frame),
+                                                     gtk_frame_measure,
+                                                     gtk_frame_allocate,
+                                                     gtk_frame_render,
+                                                     NULL,
+                                                     NULL);
+  priv->border_gadget = gtk_css_custom_gadget_new ("border",
+                                                       GTK_WIDGET (frame),
+                                                       priv->gadget,
+                                                       NULL,
+                                                       NULL,
+                                                       gtk_frame_allocate_border,
+                                                       NULL,
+                                                       NULL,
+                                                       NULL);
+}
+
+static void
+gtk_frame_finalize (GObject *object)
+{
+  GtkFrame *frame = GTK_FRAME (object);
+  GtkFramePrivate *priv = frame->priv;
+
+  g_clear_object (&priv->border_gadget);
+  g_clear_object (&priv->gadget);
+
+  G_OBJECT_CLASS (gtk_frame_parent_class)->finalize (object);
 }
 
 static void 
@@ -273,7 +345,7 @@ gtk_frame_set_property (GObject         *object,
     case PROP_LABEL_XALIGN:
       gtk_frame_set_label_align (frame, g_value_get_float (value), 
                                 priv->label_yalign);
-      break;
+     break;
     case PROP_LABEL_YALIGN:
       gtk_frame_set_label_align (frame, priv->label_xalign,
                                 g_value_get_float (value));
@@ -579,8 +651,6 @@ gtk_frame_set_shadow_type (GtkFrame      *frame,
                           GtkShadowType  type)
 {
   GtkFramePrivate *priv;
-  GtkWidget *widget;
-  GtkStyleContext *context;
 
   g_return_if_fail (GTK_IS_FRAME (frame));
 
@@ -588,19 +658,13 @@ gtk_frame_set_shadow_type (GtkFrame      *frame,
 
   if ((GtkShadowType) priv->shadow_type != type)
     {
-      widget = GTK_WIDGET (frame);
       priv->shadow_type = type;
 
-      context = gtk_widget_get_style_context (GTK_WIDGET (frame));
       if (type == GTK_SHADOW_NONE)
-        gtk_style_context_add_class (context, GTK_STYLE_CLASS_FLAT);
+        gtk_css_gadget_add_class (priv->border_gadget, GTK_STYLE_CLASS_FLAT);
       else
-        gtk_style_context_remove_class (context, GTK_STYLE_CLASS_FLAT);
+        gtk_css_gadget_remove_class (priv->border_gadget, GTK_STYLE_CLASS_FLAT);
 
-      if (gtk_widget_is_drawable (widget))
-       gtk_widget_queue_draw (widget);
-
-      gtk_widget_queue_resize (widget);
       g_object_notify_by_pspec (G_OBJECT (frame), frame_props[PROP_SHADOW_TYPE]);
     }
 }
@@ -622,87 +686,65 @@ gtk_frame_get_shadow_type (GtkFrame *frame)
   return frame->priv->shadow_type;
 }
 
-static void
-get_padding_and_border (GtkFrame *frame,
-                        GtkBorder *border)
+static gboolean
+gtk_frame_draw (GtkWidget *widget,
+               cairo_t   *cr)
 {
-  GtkStyleContext *context;
-  GtkStateFlags state;
-
-  context = gtk_widget_get_style_context (GTK_WIDGET (frame));
-  state = gtk_style_context_get_state (context);
-
-  gtk_style_context_get_padding (context, state, border);
-
-  if (frame->priv->shadow_type != GTK_SHADOW_NONE)
-    {
-      GtkBorder tmp;
+  gtk_css_gadget_draw (GTK_FRAME (widget)->priv->gadget, cr);
 
-      gtk_style_context_get_border (context, state, &tmp);
-      border->top += tmp.top;
-      border->right += tmp.right;
-      border->bottom += tmp.bottom;
-      border->left += tmp.left;
-    }
+  return FALSE;
 }
 
 static gboolean
-gtk_frame_draw (GtkWidget *widget,
-               cairo_t   *cr)
+gtk_frame_render (GtkCssGadget *gadget,
+                  cairo_t      *cr,
+                  int           x,
+                  int           y,
+                  int           width,
+                  int           height,
+                  gpointer      data)
 {
-  GtkFrame *frame;
+  GtkWidget *widget;
   GtkFramePrivate *priv;
-  GtkStyleContext *context;
-  gint x, y, width, height;
+  gint xc, yc, w, h;
   GtkAllocation allocation;
-  GtkBorder padding;
 
-  frame = GTK_FRAME (widget);
-  priv = frame->priv;
+  widget = gtk_css_gadget_get_owner (gadget);
+  priv = GTK_FRAME (widget)->priv;
+
+  cairo_save (cr);
 
   gtk_widget_get_allocation (widget, &allocation);
-  get_padding_and_border (frame, &padding);
-  context = gtk_widget_get_style_context (widget);
 
-  x = priv->child_allocation.x - allocation.x - padding.left;
-  y = priv->child_allocation.y - allocation.y - padding.top;
-  width = priv->child_allocation.width + padding.left + padding.right;
-  height =  priv->child_allocation.height + padding.top + padding.bottom;
+  /* We want to use the standard gadget drawing for the border,
+   * so we clip out the label allocation in order to get the
+   * frame gap.
+   */
+  xc = priv->label_allocation.x - allocation.x;
+  yc = y;
+  w = priv->label_allocation.width;
+  h = priv->label_allocation.height;
 
-  if (priv->label_widget)
+  if (GTK_IS_LABEL (priv->label_widget))
     {
-      gfloat xalign;
-      gint height_extra;
-      gint x2;
-
-      if (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_LTR)
-        xalign = priv->label_xalign;
-      else
-        xalign = 1 - priv->label_xalign;
+      PangoRectangle ink_rect;
+
+      /* Shrink the clip area for labels, so we get unclipped
+       * frames for the yalign 0.0 and 1.0 cases.
+       */
+      pango_layout_get_pixel_extents (gtk_label_get_layout (GTK_LABEL (priv->label_widget)), &ink_rect, 
NULL);
+      yc += (h - ink_rect.height) / 2;
+      h = ink_rect.height;
+    }
 
-      height_extra = MAX (0, priv->label_allocation.height - padding.top)
-          - priv->label_yalign * priv->label_allocation.height;
-      y -= height_extra;
-      height += height_extra;
+  cairo_rectangle (cr, 0, 0, allocation.width, allocation.height);
+  cairo_rectangle (cr, xc + w, yc, - w, h);
+  cairo_set_fill_rule (cr, CAIRO_FILL_RULE_WINDING);
+  cairo_clip (cr);
 
-      x2 = padding.left + (priv->child_allocation.width - priv->label_allocation.width - 2 * LABEL_PAD - 2 * 
LABEL_SIDE_PAD) * xalign + LABEL_SIDE_PAD;
+  gtk_css_gadget_draw (priv->border_gadget, cr);
 
-      gtk_render_background (context, cr, x, y, width, height);
-
-      /* If the label is completely over or under the frame we can omit the gap */
-      if (priv->label_yalign == 0.0 || priv->label_yalign == 1.0)
-        gtk_render_frame (context, cr, x, y, width, height);
-      else
-        gtk_render_frame_gap (context, cr,
-                              x, y, width, height,
-                              GTK_POS_TOP, x2,
-                              x2 + priv->label_allocation.width + 2 * LABEL_PAD);
-    }
-  else
-    {
-      gtk_render_background (context, cr, x, y, width, height);
-      gtk_render_frame (context, cr, x, y, width, height);
-    }
+  cairo_restore (cr);
 
   GTK_WIDGET_CLASS (gtk_frame_parent_class)->draw (widget, cr);
 
@@ -713,61 +755,95 @@ static void
 gtk_frame_size_allocate (GtkWidget     *widget,
                         GtkAllocation *allocation)
 {
-  GtkFrame *frame = GTK_FRAME (widget);
-  GtkFramePrivate *priv = frame->priv;
-  GtkBin *bin = GTK_BIN (widget);
-  GtkAllocation new_allocation;
-  GtkWidget *child;
+  GtkAllocation clip;
 
   gtk_widget_set_allocation (widget, allocation);
 
-  gtk_frame_compute_child_allocation (frame, &new_allocation);
+  gtk_css_gadget_allocate (GTK_FRAME (widget)->priv->gadget,
+                           allocation,
+                           gtk_widget_get_allocated_baseline (widget),
+                           &clip);
 
-  /* If the child allocation changed, that means that the frame is drawn
-   * in a new place, so we must redraw the entire widget.
-   */
-  if (gtk_widget_get_mapped (widget) && !gdk_rectangle_equal (&priv->child_allocation, &new_allocation))
-    {
-      gdk_window_invalidate_rect (gtk_widget_get_window (widget), allocation, FALSE);
-    }
+  gtk_widget_set_clip (widget, &clip);
+}
 
-  child = gtk_bin_get_child (bin);
-  if (child && gtk_widget_get_visible (child))
-    gtk_widget_size_allocate (child, &new_allocation);
+static void
+gtk_frame_allocate (GtkCssGadget        *gadget,
+                    const GtkAllocation *allocation,
+                    int                  baseline,
+                    GtkAllocation       *out_clip,
+                    gpointer             data)
+{
+  GtkWidget *widget;
+  GtkFrame *frame;
+  GtkFramePrivate *priv;
+  GtkAllocation new_allocation;
+  GtkAllocation frame_allocation;
+  gint height_extra;
+  GtkAllocation clip;
+
+  widget = gtk_css_gadget_get_owner (gadget);
+  frame = GTK_FRAME (widget);
+  priv = frame->priv;
 
+  gtk_frame_compute_child_allocation (frame, &new_allocation);
   priv->child_allocation = new_allocation;
 
   if (priv->label_widget && gtk_widget_get_visible (priv->label_widget))
     {
-      GtkBorder padding;
       gint nat_width, width, height;
       gfloat xalign;
 
-      get_padding_and_border (frame, &padding);
-
       if (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_LTR)
        xalign = priv->label_xalign;
       else
        xalign = 1 - priv->label_xalign;
 
       gtk_widget_get_preferred_width (priv->label_widget, NULL, &nat_width);
-      width = new_allocation.width - 2 * LABEL_PAD - 2 * LABEL_SIDE_PAD;
-      width = MIN (width, nat_width);
+      width = MIN (new_allocation.width, nat_width);
+      gtk_widget_get_preferred_height_for_width (priv->label_widget, width, &height, NULL);
 
-      gtk_widget_get_preferred_height_for_width (priv->label_widget, width,
-                                                 &height, NULL);
+      priv->label_allocation.x = new_allocation.x + (new_allocation.width - width) * xalign;
+      priv->label_allocation.y = new_allocation.y - height;
+      priv->label_allocation.height = height;
+      priv->label_allocation.width = width;
 
+      gtk_widget_size_allocate (priv->label_widget, &priv->label_allocation);
 
-      priv->label_allocation.x = priv->child_allocation.x + LABEL_SIDE_PAD +
-       (new_allocation.width - width - 2 * LABEL_PAD - 2 * LABEL_SIDE_PAD) * xalign + LABEL_PAD;
+      height_extra = (1 - priv->label_yalign) * height;
+    }
+  else
+    height_extra = 0;
 
-      priv->label_allocation.width = width;
+  frame_allocation.x = priv->child_allocation.x;
+  frame_allocation.y = priv->child_allocation.y - height_extra;
+  frame_allocation.width = priv->child_allocation.width;
+  frame_allocation.height = priv->child_allocation.height + height_extra;
 
-      priv->label_allocation.y = priv->child_allocation.y - MAX (height, padding.top);
-      priv->label_allocation.height = height;
+  gtk_css_gadget_allocate (priv->border_gadget,
+                           &frame_allocation,
+                           -1,
+                           &clip);
 
-      gtk_widget_size_allocate (priv->label_widget, &priv->label_allocation);
-    }
+  gtk_container_get_children_clip (GTK_CONTAINER (widget), out_clip);
+  gdk_rectangle_union (out_clip, &clip, out_clip);
+}
+
+static void
+gtk_frame_allocate_border (GtkCssGadget        *gadget,
+                           const GtkAllocation *allocation,
+                           int                  baseline,
+                           GtkAllocation       *out_clip,
+                           gpointer             data)
+{
+  GtkWidget *widget;
+  GtkWidget *child;
+
+  widget = gtk_css_gadget_get_owner (gadget);
+
+  child = gtk_bin_get_child (GTK_BIN (widget));
+  if (child && gtk_widget_get_visible (child))
+    gtk_widget_size_allocate (child, (GtkAllocation *)allocation);
 }
 
 static void
@@ -787,188 +863,163 @@ gtk_frame_real_compute_child_allocation (GtkFrame      *frame,
   GtkFramePrivate *priv = frame->priv;
   GtkWidget *widget = GTK_WIDGET (frame);
   GtkAllocation allocation;
-  GtkBorder padding;
-  gint top_margin;
-  gint border_width;
+  gint border_width, height;
 
   gtk_widget_get_allocation (widget, &allocation);
-  get_padding_and_border (frame, &padding);
   border_width = gtk_container_get_border_width (GTK_CONTAINER (frame));
 
   if (priv->label_widget)
     {
-      gint nat_width, width, height;
+      gint nat_width, width;
 
       gtk_widget_get_preferred_width (priv->label_widget, NULL, &nat_width);
-
-      width = allocation.width;
-      width -= 2 * LABEL_PAD + 2 * LABEL_SIDE_PAD;
-      width -= (border_width * 2) + padding.left + padding.right;
-
-      width = MIN (width, nat_width);
-
-      gtk_widget_get_preferred_height_for_width (priv->label_widget, width,
-                                                 &height, NULL);
-
-      top_margin = MAX (height, padding.top);
+      width = MIN (allocation.width - 2 * border_width, nat_width);
+      gtk_widget_get_preferred_height_for_width (priv->label_widget, width, &height, NULL);
     }
   else
-    top_margin = padding.top;
+    height = 0;
+
+  child_allocation->x = allocation.x + border_width;
+  child_allocation->y = allocation.y + border_width + height;
+  child_allocation->width = MAX (1, allocation.width - 2 * border_width);
+  child_allocation->height = MAX (1, allocation.height - 2 * border_width - height);
 
-  child_allocation->x = border_width + padding.left;
-  child_allocation->y = border_width + top_margin;
-  child_allocation->width = MAX (1, (gint) (allocation.width - (border_width * 2) -
-                                           padding.left - padding.right));
-  child_allocation->height = MAX (1, (gint) (allocation.height - child_allocation->y -
-                                            border_width - padding.bottom));
 
-  child_allocation->x += allocation.x;
-  child_allocation->y += allocation.y;
 }
 
 static void
-gtk_frame_get_preferred_size (GtkWidget      *widget,
-                              GtkOrientation  orientation,
-                              gint           *minimum_size,
-                              gint           *natural_size)
+gtk_frame_measure (GtkCssGadget   *gadget,
+                   GtkOrientation  orientation,
+                   int             for_size,
+                   int            *minimum,
+                   int            *natural,
+                   int            *minimum_baseline,
+                   int            *natural_baseline,
+                   gpointer        data)
 {
-  GtkFrame *frame = GTK_FRAME (widget);
-  GtkFramePrivate *priv = frame->priv;
-  GtkBorder padding;
+  GtkWidget *widget;
+  GtkFrame *frame;
+  GtkFramePrivate *priv;
   GtkWidget *child;
-  GtkBin *bin = GTK_BIN (widget);
   gint child_min, child_nat;
-  gint minimum, natural;
   guint border_width;
 
-  get_padding_and_border (frame, &padding);
+  widget = gtk_css_gadget_get_owner (gadget);
+  frame = GTK_FRAME (widget);
+  priv = frame->priv;
+
   border_width = gtk_container_get_border_width (GTK_CONTAINER (widget));
 
   if (priv->label_widget && gtk_widget_get_visible (priv->label_widget))
     {
       if (orientation == GTK_ORIENTATION_HORIZONTAL)
         {
-          gtk_widget_get_preferred_width (priv->label_widget,
-                                          &child_min, &child_nat);
-          minimum = child_min + 2 * LABEL_PAD + 2 * LABEL_SIDE_PAD;
-          natural = child_nat + 2 * LABEL_PAD + 2 * LABEL_SIDE_PAD;
+          gtk_widget_get_preferred_width (priv->label_widget, &child_min, &child_nat);
+          *minimum = child_min;
+          *natural = child_nat;
         }
       else
         {
-          gtk_widget_get_preferred_height (priv->label_widget,
-                                           &child_min, &child_nat);
-          minimum = MAX (0, child_min - padding.top);
-          natural = MAX (0, child_nat - padding.top);
+          if (for_size > 0)
+            gtk_widget_get_preferred_height_for_width (priv->label_widget,
+                                                       for_size - 2 * border_width, &child_min, &child_nat);
+          else
+            gtk_widget_get_preferred_height (priv->label_widget, &child_min, &child_nat);
+
+          *minimum = child_min;
+          *natural = child_nat;
         }
     }
   else
     {
-      minimum = 0;
-      natural = 0;
+      *minimum = 0;
+      *natural = 0;
     }
 
-  child = gtk_bin_get_child (bin);
+  child = gtk_bin_get_child (GTK_BIN (widget));
   if (child && gtk_widget_get_visible (child))
     {
       if (orientation == GTK_ORIENTATION_HORIZONTAL)
         {
-          gtk_widget_get_preferred_width (child,
-                                          &child_min, &child_nat);
-          minimum = MAX (minimum, child_min);
-          natural = MAX (natural, child_nat);
+          gtk_widget_get_preferred_width (child, &child_min, &child_nat);
+          *minimum = MAX (*minimum, child_min);
+          *natural = MAX (*natural, child_nat);
         }
       else
         {
-          gtk_widget_get_preferred_height (child,
-                                           &child_min, &child_nat);
-          minimum += child_min;
-          natural += child_nat;
-        }
-    }
+          if (for_size > 0)
+            gtk_widget_get_preferred_height_for_width (child, for_size - 2 * border_width, &child_min, 
&child_nat);
+          else
+            gtk_widget_get_preferred_height (child, &child_min, &child_nat);
 
-  if (orientation == GTK_ORIENTATION_HORIZONTAL)
-    {
-      minimum += (border_width * 2) + padding.left + padding.right;
-      natural += (border_width * 2) + padding.left + padding.right;
-    }
-  else
-    {
-      minimum += (border_width * 2) + padding.top + padding.bottom;
-      natural += (border_width * 2) + padding.top + padding.bottom;
+          *minimum += child_min;
+          *natural += child_nat;
+        }
     }
 
-  *minimum_size = minimum;
-  *natural_size = natural;
+  *minimum += 2 * border_width;
+  *natural += 2 * border_width;
 }
 
 static void
 gtk_frame_get_preferred_width (GtkWidget *widget,
-                               gint      *minimum_size,
-                               gint      *natural_size)
+                               gint      *minimum,
+                               gint      *natural)
 {
-  gtk_frame_get_preferred_size (widget, GTK_ORIENTATION_HORIZONTAL, minimum_size, natural_size);
+  gtk_css_gadget_get_preferred_size (GTK_FRAME (widget)->priv->gadget,
+                                     GTK_ORIENTATION_HORIZONTAL,
+                                     -1,
+                                     minimum, natural,
+                                     NULL, NULL);
+}
+
+static void
+gtk_frame_get_preferred_width_for_height (GtkWidget *widget,
+                                          gint       height,
+                                          gint      *minimum,
+                                          gint      *natural)
+{
+  gtk_css_gadget_get_preferred_size (GTK_FRAME (widget)->priv->gadget,
+                                     GTK_ORIENTATION_HORIZONTAL,
+                                     height,
+                                     minimum, natural,
+                                     NULL, NULL);
 }
 
 static void
 gtk_frame_get_preferred_height (GtkWidget *widget,
-                                gint      *minimum_size,
-                                gint      *natural_size)
+                                gint      *minimum,
+                                gint      *natural)
 {
-  gtk_frame_get_preferred_size (widget, GTK_ORIENTATION_VERTICAL, minimum_size, natural_size);
+  gtk_css_gadget_get_preferred_size (GTK_FRAME (widget)->priv->gadget,
+                                     GTK_ORIENTATION_VERTICAL,
+                                     -1,
+                                     minimum, natural,
+                                     NULL, NULL);
 }
 
 
 static void
 gtk_frame_get_preferred_height_for_width (GtkWidget *widget,
                                           gint       width,
-                                          gint      *minimum_height,
-                                          gint      *natural_height)
+                                          gint      *minimum,
+                                          gint      *natural)
 {
-  GtkWidget *child;
-  GtkFrame *frame = GTK_FRAME (widget);
-  GtkFramePrivate *priv = frame->priv;
-  GtkBin *bin = GTK_BIN (widget);
-  GtkBorder padding;
-  gint child_min, child_nat, label_width;
-  gint minimum, natural;
-  guint border_width;
-
-  get_padding_and_border (frame, &padding);
-  border_width = gtk_container_get_border_width (GTK_CONTAINER (widget));
-
-  minimum = (border_width * 2) + padding.top + padding.bottom;
-  natural = (border_width * 2) + padding.top + padding.bottom;
-
-  width -= (border_width * 2) + padding.left + padding.right;
-  label_width = width - 2 * LABEL_PAD + 2 * LABEL_SIDE_PAD;
-
-  if (priv->label_widget && gtk_widget_get_visible (priv->label_widget))
-    {
-      gtk_widget_get_preferred_height_for_width (priv->label_widget,
-                                                 label_width, &child_min, &child_nat);
-      minimum += child_min;
-      natural += child_nat;
-    }
-
-  child = gtk_bin_get_child (bin);
-  if (child && gtk_widget_get_visible (child))
-    {
-      gtk_widget_get_preferred_height_for_width (child,
-                                                 width, &child_min, &child_nat);
-      minimum += child_min;
-      natural += child_nat;
-    }
-
-  *minimum_height = minimum;
-  *natural_height = natural;
+  gtk_css_gadget_get_preferred_size (GTK_FRAME (widget)->priv->gadget,
+                                     GTK_ORIENTATION_VERTICAL,
+                                     width,
+                                     minimum, natural,
+                                     NULL, NULL);
 }
 
 static void
-gtk_frame_get_preferred_width_for_height (GtkWidget *widget,
-                                          gint       height,
-                                          gint      *minimum_width,
-                                          gint      *natural_width)
+gtk_frame_state_flags_changed (GtkWidget     *widget,
+                               GtkStateFlags  previous_state)
 {
-  GTK_WIDGET_GET_CLASS (widget)->get_preferred_width (widget, minimum_width, natural_width);
-}
+  GtkCssNode *border_node;
 
+  border_node = gtk_css_gadget_get_node (GTK_FRAME (widget)->priv->border_gadget);
+  gtk_css_node_set_state (border_node, gtk_widget_get_state_flags (widget));
+
+  GTK_WIDGET_CLASS (gtk_frame_parent_class)->state_flags_changed (widget, previous_state);
+}
diff --git a/gtk/theme/Adwaita/_common.scss b/gtk/theme/Adwaita/_common.scss
index c5a3994..401a595 100644
--- a/gtk/theme/Adwaita/_common.scss
+++ b/gtk/theme/Adwaita/_common.scss
@@ -2484,12 +2484,15 @@ levelbar {
 /**********
  * Frames *
  **********/
-frame,
+frame border,
 .frame {
+  box-shadow: none;
+  margin: 0;
+  padding: 0;
+  border-radius: 0;
   border: 1px solid $borders_color;
   &.flat { border-style: none; }
   &:backdrop { border-color: $backdrop_borders_color; }
-  padding: 0;
 }
 
 paper {
diff --git a/gtk/theme/Adwaita/gtk-contained-dark.css b/gtk/theme/Adwaita/gtk-contained-dark.css
index df30fdf..0454fcd 100644
--- a/gtk/theme/Adwaita/gtk-contained-dark.css
+++ b/gtk/theme/Adwaita/gtk-contained-dark.css
@@ -3474,14 +3474,17 @@ levelbar {
 /**********
  * Frames *
  **********/
-frame,
+frame border,
 .frame {
-  border: 1px solid #1c1f1f;
-  padding: 0; }
-  frame.flat,
+  box-shadow: none;
+  margin: 0;
+  padding: 0;
+  border-radius: 0;
+  border: 1px solid #1c1f1f; }
+  frame border.flat,
   .frame.flat {
     border-style: none; }
-  frame:backdrop,
+  frame border:backdrop,
   .frame:backdrop {
     border-color: #1f2222; }
 
diff --git a/gtk/theme/Adwaita/gtk-contained.css b/gtk/theme/Adwaita/gtk-contained.css
index 8e286df..6624b0d 100644
--- a/gtk/theme/Adwaita/gtk-contained.css
+++ b/gtk/theme/Adwaita/gtk-contained.css
@@ -3636,14 +3636,17 @@ levelbar {
 /**********
  * Frames *
  **********/
-frame,
+frame border,
 .frame {
-  border: 1px solid #9d9d99;
-  padding: 0; }
-  frame.flat,
+  box-shadow: none;
+  margin: 0;
+  padding: 0;
+  border-radius: 0;
+  border: 1px solid #9d9d99; }
+  frame border.flat,
   .frame.flat {
     border-style: none; }
-  frame:backdrop,
+  frame border:backdrop,
   .frame:backdrop {
     border-color: #a5a5a1; }
 


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