[epiphany] Make margins around the title widget adaptive

[Adrien Plazas <aplazas src gnome org>]

commit 81b06827ff8908d0be72cc56162e412d47cbde46
Author: Adrien Plazas <kekun plazas laposte net>
Date:   Fri Nov 23 10:50:05 2018 +0100

    Make margins around the title widget adaptive
    
    Put the title widget into an expanded HdyColumn and remove the fixed
    margins around it to make the margins present but progressively less
    proheminent as the window shrinks horizontally. This helps the header
    bar to remain usable with its buttons at narrower widths, which will
    allow to trigger the narrow mode at narrower width, making it less
    present on the desktop.

 lib/widgets/ephy-location-entry.c | 13 -------------
 lib/widgets/ephy-title-box.c      | 13 -------------
 src/ephy-header-bar.c             | 13 ++++++++++---
 3 files changed, 10 insertions(+), 29 deletions(-)
---
diff --git a/lib/widgets/ephy-location-entry.c b/lib/widgets/ephy-location-entry.c
index 5e16653b6..1b1672a33 100644
--- a/lib/widgets/ephy-location-entry.c
+++ b/lib/widgets/ephy-location-entry.c
@@ -319,18 +319,6 @@ ephy_location_entry_finalize (GObject *object)
   G_OBJECT_CLASS (ephy_location_entry_parent_class)->finalize (object);
 }
 
-static void
-ephy_location_entry_get_preferred_width (GtkWidget *widget,
-                                         gint      *minimum_width,
-                                         gint      *natural_width)
-{
-  if (minimum_width)
-    *minimum_width = -1;
-
-  if (natural_width)
-    *natural_width = 848;
-}
-
 static void
 ephy_location_entry_get_preferred_height (GtkWidget *widget,
                                           gint      *minimum_height,
@@ -425,7 +413,6 @@ ephy_location_entry_class_init (EphyLocationEntryClass *klass)
   object_class->finalize = ephy_location_entry_finalize;
   object_class->dispose = ephy_location_entry_dispose;
 
-  widget_class->get_preferred_width = ephy_location_entry_get_preferred_width;
   widget_class->get_preferred_height = ephy_location_entry_get_preferred_height;
 
   g_object_class_override_property (object_class, PROP_ADDRESS, "address");
diff --git a/lib/widgets/ephy-title-box.c b/lib/widgets/ephy-title-box.c
index a47159088..3ceca1f44 100644
--- a/lib/widgets/ephy-title-box.c
+++ b/lib/widgets/ephy-title-box.c
@@ -117,18 +117,6 @@ ephy_title_box_constructed (GObject *object)
   gtk_widget_show_all (GTK_WIDGET (title_box));
 }
 
-static void
-ephy_title_box_get_preferred_width (GtkWidget *widget,
-                                    gint      *minimum_width,
-                                    gint      *natural_width)
-{
-  if (minimum_width)
-    *minimum_width = -1;
-
-  if (natural_width)
-    *natural_width = 860;
-}
-
 static const char *
 ephy_title_box_title_widget_get_address (EphyTitleWidget *widget)
 {
@@ -240,7 +228,6 @@ ephy_title_box_class_init (EphyTitleBoxClass *klass)
   object_class->get_property = ephy_title_box_get_property;
   object_class->set_property = ephy_title_box_set_property;
   widget_class->button_press_event = ephy_title_box_button_press_event;
-  widget_class->get_preferred_width = ephy_title_box_get_preferred_width;
 
   g_object_class_override_property (object_class, PROP_ADDRESS, "address");
   g_object_class_override_property (object_class, PROP_SECURITY_LEVEL, "security-level");
diff --git a/src/ephy-header-bar.c b/src/ephy-header-bar.c
index d216655a6..109a2f3e7 100644
--- a/src/ephy-header-bar.c
+++ b/src/ephy-header-bar.c
@@ -33,6 +33,8 @@
 #include "ephy-type-builtins.h"
 
 #include <glib/gi18n.h>
+#define HANDY_USE_UNSTABLE_API
+#include <handy.h>
 
 enum {
   PROP_0,
@@ -144,6 +146,7 @@ ephy_header_bar_constructed (GObject *object)
   GtkWidget *page_menu_popover;
   GtkBuilder *builder;
   EphyEmbedShell *embed_shell;
+  HdyColumn *column;
 
   G_OBJECT_CLASS (ephy_header_bar_parent_class)->constructed (object);
 
@@ -161,7 +164,6 @@ ephy_header_bar_constructed (GObject *object)
                     G_CALLBACK (update_revealer_visibility), NULL);
   gtk_revealer_set_transition_type (GTK_REVEALER (header_bar->start_revealer), 
GTK_REVEALER_TRANSITION_TYPE_SLIDE_RIGHT);
   gtk_container_add (GTK_CONTAINER (header_bar->start_revealer), GTK_WIDGET (header_bar->action_bar_start));
-  gtk_widget_set_margin_end (GTK_WIDGET (header_bar->action_bar_start), 54);
 
   gtk_header_bar_pack_start (GTK_HEADER_BAR (header_bar),
                              GTK_WIDGET (header_bar->start_revealer));
@@ -173,7 +175,13 @@ ephy_header_bar_constructed (GObject *object)
     header_bar->title_widget = EPHY_TITLE_WIDGET (ephy_title_box_new ());
   else
     header_bar->title_widget = EPHY_TITLE_WIDGET (ephy_location_entry_new ());
-  gtk_header_bar_set_custom_title (GTK_HEADER_BAR (header_bar), GTK_WIDGET (header_bar->title_widget));
+  column = hdy_column_new ();
+  gtk_widget_set_hexpand (GTK_WIDGET (column), TRUE);
+  gtk_widget_show (GTK_WIDGET (column));
+  hdy_column_set_maximum_width (column, 860);
+  hdy_column_set_linear_growth_width (column, 560);
+  gtk_container_add (GTK_CONTAINER (column), GTK_WIDGET (header_bar->title_widget));
+  gtk_header_bar_set_custom_title (GTK_HEADER_BAR (header_bar), GTK_WIDGET (column));
   gtk_widget_show (GTK_WIDGET (header_bar->title_widget));
 
   if (EPHY_IS_LOCATION_ENTRY (header_bar->title_widget)) {
@@ -230,7 +238,6 @@ ephy_header_bar_constructed (GObject *object)
                     G_CALLBACK (update_revealer_visibility), NULL);
   gtk_revealer_set_transition_type (GTK_REVEALER (header_bar->end_revealer), 
GTK_REVEALER_TRANSITION_TYPE_SLIDE_LEFT);
   gtk_container_add (GTK_CONTAINER (header_bar->end_revealer), GTK_WIDGET (header_bar->action_bar_end));
-  gtk_widget_set_margin_start (GTK_WIDGET (header_bar->action_bar_end), 54);
 
   gtk_header_bar_pack_end (GTK_HEADER_BAR (header_bar),
                            GTK_WIDGET (header_bar->end_revealer));