[gtk+/wip/baedert/children: 7/15] scrolledwindow: measure child widgets using gtk_widget_measure

[Timm Bäder <baedert src gnome org>]

commit 3e476897a5fa00179bf52c79115797a1f31fac19
Author: Timm Bäder <mail baedert org>
Date:   Thu Dec 1 19:44:02 2016 +0100

    scrolledwindow: measure child widgets using gtk_widget_measure

 gtk/gtkscrolledwindow.c |   79 +++++++++++++++++++++++++---------------------
 1 files changed, 43 insertions(+), 36 deletions(-)
---
diff --git a/gtk/gtkscrolledwindow.c b/gtk/gtkscrolledwindow.c
index 9744a98..3ff693c 100644
--- a/gtk/gtkscrolledwindow.c
+++ b/gtk/gtkscrolledwindow.c
@@ -1429,8 +1429,10 @@ gtk_scrolled_window_allocate (GtkCssGadget        *gadget,
   bin = GTK_BIN (scrolled_window);
 
   /* Get possible scrollbar dimensions */
-  gtk_widget_get_preferred_height (priv->hscrollbar, &sb_height, NULL);
-  gtk_widget_get_preferred_width (priv->vscrollbar, &sb_width, NULL);
+  gtk_widget_measure (priv->vscrollbar, GTK_ORIENTATION_HORIZONTAL, -1,
+                      &sb_width, NULL, NULL, NULL);
+  gtk_widget_measure (priv->hscrollbar, GTK_ORIENTATION_VERTICAL, -1,
+                      &sb_height, NULL, NULL, NULL);
 
   if (priv->hscrollbar_policy == GTK_POLICY_ALWAYS)
     priv->hscrollbar_visible = TRUE;
@@ -1465,23 +1467,25 @@ gtk_scrolled_window_allocate (GtkCssGadget        *gadget,
       /* Determine scrollbar visibility first via hfw apis */
       if (gtk_widget_get_request_mode (child) == GTK_SIZE_REQUEST_HEIGHT_FOR_WIDTH)
        {
-         if (hscroll_policy == GTK_SCROLL_MINIMUM)
-           gtk_widget_get_preferred_width (child, &child_scroll_width, NULL);
-         else
-           gtk_widget_get_preferred_width (child, NULL, &child_scroll_width);
+          if (hscroll_policy == GTK_SCROLL_MINIMUM)
+            gtk_widget_measure (child, GTK_ORIENTATION_HORIZONTAL, -1,
+                                &child_scroll_width, NULL, NULL, NULL);
+          else
+            gtk_widget_measure (child, GTK_ORIENTATION_HORIZONTAL, -1,
+                                NULL, &child_scroll_width, NULL, NULL);
 
          if (priv->vscrollbar_policy == GTK_POLICY_AUTOMATIC)
            {
              /* First try without a vertical scrollbar if the content will fit the height
               * given the extra width of the scrollbar */
              if (vscroll_policy == GTK_SCROLL_MINIMUM)
-               gtk_widget_get_preferred_height_for_width (child,
-                                                          MAX (allocation->width, child_scroll_width),
-                                                          &child_scroll_height, NULL);
-             else
-               gtk_widget_get_preferred_height_for_width (child,
-                                                          MAX (allocation->width, child_scroll_width),
-                                                          NULL, &child_scroll_height);
+                gtk_widget_measure (child, GTK_ORIENTATION_VERTICAL,
+                                    MAX (allocation->width, child_scroll_width),
+                                    &child_scroll_height, NULL, NULL, NULL);
+              else
+                gtk_widget_measure (child, GTK_ORIENTATION_VERTICAL,
+                                    MAX (allocation->width, child_scroll_width),
+                                    NULL, &child_scroll_height, NULL, NULL);
 
              if (priv->hscrollbar_policy == GTK_POLICY_AUTOMATIC)
                {
@@ -1528,23 +1532,25 @@ gtk_scrolled_window_allocate (GtkCssGadget        *gadget,
        }
       else /* GTK_SIZE_REQUEST_WIDTH_FOR_HEIGHT */
        {
-         if (vscroll_policy == GTK_SCROLL_MINIMUM)
-           gtk_widget_get_preferred_height (child, &child_scroll_height, NULL);
-         else
-           gtk_widget_get_preferred_height (child, NULL, &child_scroll_height);
+          if (vscroll_policy == GTK_SCROLL_MINIMUM)
+            gtk_widget_measure (child, GTK_ORIENTATION_VERTICAL, -1,
+                                &child_scroll_height, NULL, NULL, NULL);
+          else
+            gtk_widget_measure (child, GTK_ORIENTATION_VERTICAL, -1,
+                                NULL, &child_scroll_height, NULL, NULL);
 
          if (priv->hscrollbar_policy == GTK_POLICY_AUTOMATIC)
            {
              /* First try without a horizontal scrollbar if the content will fit the width
               * given the extra height of the scrollbar */
              if (hscroll_policy == GTK_SCROLL_MINIMUM)
-               gtk_widget_get_preferred_width_for_height (child,
-                                                          MAX (allocation->height, child_scroll_height),
-                                                          &child_scroll_width, NULL);
-             else
-               gtk_widget_get_preferred_width_for_height (child,
-                                                          MAX (allocation->height, child_scroll_height),
-                                                          NULL, &child_scroll_width);
+                gtk_widget_measure (child, GTK_ORIENTATION_HORIZONTAL,
+                                    MAX (allocation->height, child_scroll_height),
+                                    &child_scroll_width, NULL, NULL, NULL);
+              else
+                gtk_widget_measure (child, GTK_ORIENTATION_HORIZONTAL,
+                                    MAX (allocation->height, child_scroll_height),
+                                    NULL, &child_scroll_width, NULL, NULL);
 
              if (priv->vscrollbar_policy == GTK_POLICY_AUTOMATIC)
                {
@@ -1726,12 +1732,13 @@ gtk_scrolled_window_measure (GtkCssGadget   *gadget,
    */
   if (child && gtk_widget_get_visible (child))
     {
+      gtk_widget_measure (child, orientation, -1,
+                          &min_child_size, &nat_child_size,
+                          NULL, NULL);
+
+
       if (orientation == GTK_ORIENTATION_HORIZONTAL)
        {
-         gtk_widget_get_preferred_width (child,
-                                          &min_child_size,
-                                          &nat_child_size);
-
          if (priv->propagate_natural_width)
            natural_req.width += nat_child_size;
 
@@ -1750,10 +1757,6 @@ gtk_scrolled_window_measure (GtkCssGadget   *gadget,
        }
       else /* GTK_ORIENTATION_VERTICAL */
        {
-         gtk_widget_get_preferred_height (child,
-                                           &min_child_size,
-                                           &nat_child_size);
-
          if (priv->propagate_natural_height)
            natural_req.height += nat_child_size;
 
@@ -3057,8 +3060,10 @@ gtk_scrolled_window_relative_allocation (GtkWidget     *widget,
   priv = scrolled_window->priv;
 
   /* Get possible scrollbar dimensions */
-  gtk_widget_get_preferred_height (priv->hscrollbar, &sb_height, NULL);
-  gtk_widget_get_preferred_width (priv->vscrollbar, &sb_width, NULL);
+  gtk_widget_measure (priv->vscrollbar, GTK_ORIENTATION_HORIZONTAL, -1,
+                      &sb_width, NULL, NULL, NULL);
+  gtk_widget_measure (priv->hscrollbar, GTK_ORIENTATION_VERTICAL, -1,
+                      &sb_height, NULL, NULL, NULL);
 
   gtk_css_gadget_get_content_allocation (priv->gadget, &content_allocation, NULL);
 
@@ -3172,8 +3177,10 @@ gtk_scrolled_window_allocate_scrollbar (GtkScrolledWindow *scrolled_window,
   priv = scrolled_window->priv;
 
   gtk_scrolled_window_inner_allocation (widget, &content_allocation);
-  gtk_widget_get_preferred_height (priv->hscrollbar, &sb_height, NULL);
-  gtk_widget_get_preferred_width (priv->vscrollbar, &sb_width, NULL);
+  gtk_widget_measure (priv->vscrollbar, GTK_ORIENTATION_HORIZONTAL, -1,
+                      &sb_width, NULL, NULL, NULL);
+  gtk_widget_measure (priv->hscrollbar, GTK_ORIENTATION_VERTICAL, -1,
+                      &sb_height, NULL, NULL, NULL);
 
   if (scrollbar == priv->hscrollbar)
     {