[libadwaita/wip/exalm/fixes: 6/6] Implement get_request_mode() where appropriate

[Alexander Mikhaylenko <alexm src gnome org>]

commit 6b7d23432de8e61a8b52451dc844e8127ceee50f
Author: Alexander Mikhaylenko <alexm gnome org>
Date:   Mon Aug 9 20:31:43 2021 +0500

    Implement get_request_mode() where appropriate
    
    When using a layout manager, get_request_mode() comes for free, but
    otherwise it has to be implemented manually for every widget.
    
    Coincidentally, we've had a copy of GtkLayoutManager's get_request_mode()
    in AdwHeaderBar and AdwViewStack. Extract it into widget utils and use it
    everywhere.
    
    Fixes https://gitlab.gnome.org/GNOME/libadwaita/-/issues/70

 src/adw-carousel.c             |  1 +
 src/adw-flap.c                 |  1 +
 src/adw-header-bar.c           | 34 ----------------------------------
 src/adw-indicator-bin.c        |  1 +
 src/adw-leaflet.c              |  1 +
 src/adw-squeezer.c             |  1 +
 src/adw-view-stack.c           | 35 +----------------------------------
 src/adw-widget-utils-private.h |  2 ++
 src/adw-widget-utils.c         | 32 ++++++++++++++++++++++++++++++++
 9 files changed, 40 insertions(+), 68 deletions(-)
---
diff --git a/src/adw-carousel.c b/src/adw-carousel.c
index 2d2c708c..183bf22b 100644
--- a/src/adw-carousel.c
+++ b/src/adw-carousel.c
@@ -873,6 +873,7 @@ adw_carousel_class_init (AdwCarouselClass *klass)
   widget_class->measure = adw_carousel_measure;
   widget_class->size_allocate = adw_carousel_size_allocate;
   widget_class->direction_changed = adw_carousel_direction_changed;
+  widget_class->get_request_mode = adw_widget_get_request_mode;
   widget_class->compute_expand = adw_widget_compute_expand;
 
   /**
diff --git a/src/adw-flap.c b/src/adw-flap.c
index 5a482087..b59f5d3c 100644
--- a/src/adw-flap.c
+++ b/src/adw-flap.c
@@ -1262,6 +1262,7 @@ adw_flap_class_init (AdwFlapClass *klass)
   widget_class->size_allocate = adw_flap_size_allocate;
   widget_class->snapshot = adw_flap_snapshot;
   widget_class->direction_changed = adw_flap_direction_changed;
+  widget_class->get_request_mode = adw_widget_get_request_mode;
   widget_class->compute_expand = adw_widget_compute_expand;
 
   /**
diff --git a/src/adw-header-bar.c b/src/adw-header-bar.c
index c42a6d35..1d0dc6b0 100644
--- a/src/adw-header-bar.c
+++ b/src/adw-header-bar.c
@@ -354,39 +354,6 @@ adw_header_bar_set_property (GObject      *object,
   }
 }
 
-static GtkSizeRequestMode
-adw_header_bar_get_request_mode (GtkWidget *widget)
-{
-  GtkWidget *w;
-  int wfh = 0, hfw = 0;
-
-  for (w = gtk_widget_get_first_child (widget);
-       w != NULL;
-       w = gtk_widget_get_next_sibling (w)) {
-    GtkSizeRequestMode mode = gtk_widget_get_request_mode (w);
-
-    switch (mode) {
-    case GTK_SIZE_REQUEST_HEIGHT_FOR_WIDTH:
-      hfw ++;
-      break;
-    case GTK_SIZE_REQUEST_WIDTH_FOR_HEIGHT:
-      wfh ++;
-      break;
-    case GTK_SIZE_REQUEST_CONSTANT_SIZE:
-    default:
-      break;
-    }
-  }
-
-  if (hfw == 0 && wfh == 0)
-    return GTK_SIZE_REQUEST_CONSTANT_SIZE;
-  else
-    return wfh > hfw ?
-        GTK_SIZE_REQUEST_WIDTH_FOR_HEIGHT :
-        GTK_SIZE_REQUEST_HEIGHT_FOR_WIDTH;
-}
-
-
 static void
 adw_header_bar_class_init (AdwHeaderBarClass *class)
 {
@@ -400,7 +367,6 @@ adw_header_bar_class_init (AdwHeaderBarClass *class)
 
   widget_class->root = adw_header_bar_root;
   widget_class->unroot = adw_header_bar_unroot;
-  widget_class->get_request_mode = adw_header_bar_get_request_mode;
   widget_class->compute_expand = adw_widget_compute_expand_horizontal_only;
 
   /**
diff --git a/src/adw-indicator-bin.c b/src/adw-indicator-bin.c
index f4993d7f..3e60d67e 100644
--- a/src/adw-indicator-bin.c
+++ b/src/adw-indicator-bin.c
@@ -281,6 +281,7 @@ adw_indicator_bin_class_init (AdwIndicatorBinClass *klass)
   widget_class->size_allocate = adw_indicator_bin_size_allocate;
   widget_class->snapshot = adw_indicator_bin_snapshot;
   widget_class->unrealize = adw_indicator_bin_unrealize;
+  widget_class->get_request_mode = adw_widget_get_request_mode;
   widget_class->compute_expand = adw_widget_compute_expand;
 
   /**
diff --git a/src/adw-leaflet.c b/src/adw-leaflet.c
index 07c1d792..9b21a54d 100644
--- a/src/adw-leaflet.c
+++ b/src/adw-leaflet.c
@@ -2307,6 +2307,7 @@ adw_leaflet_class_init (AdwLeafletClass *klass)
   widget_class->size_allocate = adw_leaflet_size_allocate;
   widget_class->snapshot = adw_leaflet_snapshot;
   widget_class->direction_changed = adw_leaflet_direction_changed;
+  widget_class->get_request_mode = adw_widget_get_request_mode;
   widget_class->compute_expand = adw_widget_compute_expand;
 
   g_object_class_override_property (object_class,
diff --git a/src/adw-squeezer.c b/src/adw-squeezer.c
index c0c245e6..7fade0be 100644
--- a/src/adw-squeezer.c
+++ b/src/adw-squeezer.c
@@ -1066,6 +1066,7 @@ adw_squeezer_class_init (AdwSqueezerClass *klass)
   widget_class->size_allocate = adw_squeezer_size_allocate;
   widget_class->snapshot = adw_squeezer_snapshot;
   widget_class->measure = adw_squeezer_measure;
+  widget_class->get_request_mode = adw_widget_get_request_mode;
   widget_class->compute_expand = adw_widget_compute_expand;
 
   g_object_class_override_property (object_class,
diff --git a/src/adw-view-stack.c b/src/adw-view-stack.c
index ceff2165..9c651733 100644
--- a/src/adw-view-stack.c
+++ b/src/adw-view-stack.c
@@ -882,39 +882,6 @@ stack_remove (AdwViewStack  *self,
     gtk_widget_queue_resize (GTK_WIDGET (self));
 }
 
-static GtkSizeRequestMode
-adw_view_stack_get_request_mode (GtkWidget *widget)
-{
-  GtkWidget *child;
-  int wfh = 0, hfw = 0;
-
-  for (child = gtk_widget_get_first_child (widget);
-       child;
-       child = gtk_widget_get_next_sibling (child)) {
-    GtkSizeRequestMode mode = gtk_widget_get_request_mode (child);
-
-    switch (mode) {
-    case GTK_SIZE_REQUEST_HEIGHT_FOR_WIDTH:
-      hfw++;
-      break;
-    case GTK_SIZE_REQUEST_WIDTH_FOR_HEIGHT:
-      wfh++;
-      break;
-    case GTK_SIZE_REQUEST_CONSTANT_SIZE:
-    default:
-      break;
-    }
-  }
-
-  if (hfw == 0 && wfh == 0)
-    return GTK_SIZE_REQUEST_CONSTANT_SIZE;
-  else
-    return wfh > hfw ?
-        GTK_SIZE_REQUEST_WIDTH_FOR_HEIGHT :
-        GTK_SIZE_REQUEST_HEIGHT_FOR_WIDTH;
-}
-
-
 static void
 adw_view_stack_size_allocate (GtkWidget *widget,
                               int        width,
@@ -1180,8 +1147,8 @@ adw_view_stack_class_init (AdwViewStackClass *klass)
   widget_class->size_allocate = adw_view_stack_size_allocate;
   widget_class->snapshot = adw_view_stack_snapshot;
   widget_class->measure = adw_view_stack_measure;
+  widget_class->get_request_mode = adw_widget_get_request_mode;
   widget_class->compute_expand = adw_widget_compute_expand;
-  widget_class->get_request_mode = adw_view_stack_get_request_mode;
 
   /**
    * AdwViewStack:hhomogeneous: (attributes org.gtk.Property.get=adw_view_stack_get_hhomogeneous 
org.gtk.Property.set=adw_view_stack_set_hhomogeneous)
diff --git a/src/adw-widget-utils-private.h b/src/adw-widget-utils-private.h
index d9db1103..3f6f027d 100644
--- a/src/adw-widget-utils-private.h
+++ b/src/adw-widget-utils-private.h
@@ -39,4 +39,6 @@ void adw_widget_compute_expand_horizontal_only (GtkWidget *widget,
                                                 gboolean  *hexpand_p,
                                                 gboolean  *vexpand_p);
 
+GtkSizeRequestMode adw_widget_get_request_mode (GtkWidget *widget);
+
 G_END_DECLS
diff --git a/src/adw-widget-utils.c b/src/adw-widget-utils.c
index c234ceb6..9541fb89 100644
--- a/src/adw-widget-utils.c
+++ b/src/adw-widget-utils.c
@@ -511,3 +511,35 @@ adw_widget_compute_expand_horizontal_only (GtkWidget *widget,
   *hexpand_p = hexpand;
   *vexpand_p = FALSE;
 }
+
+GtkSizeRequestMode
+adw_widget_get_request_mode (GtkWidget *widget)
+{
+  GtkWidget *child;
+  int wfh = 0, hfw = 0;
+
+  for (child = gtk_widget_get_first_child (widget);
+       child;
+       child = gtk_widget_get_next_sibling (child)) {
+    GtkSizeRequestMode mode = gtk_widget_get_request_mode (child);
+
+    switch (mode) {
+    case GTK_SIZE_REQUEST_HEIGHT_FOR_WIDTH:
+      hfw++;
+      break;
+    case GTK_SIZE_REQUEST_WIDTH_FOR_HEIGHT:
+      wfh++;
+      break;
+    case GTK_SIZE_REQUEST_CONSTANT_SIZE:
+    default:
+      break;
+    }
+  }
+
+  if (hfw == 0 && wfh == 0)
+    return GTK_SIZE_REQUEST_CONSTANT_SIZE;
+  else
+    return wfh > hfw ?
+        GTK_SIZE_REQUEST_WIDTH_FOR_HEIGHT :
+        GTK_SIZE_REQUEST_HEIGHT_FOR_WIDTH;
+}