[gtranslator] Custom styles in header to show devel built

[Daniel Garcia Moreno <danigm src gnome org>]

commit 6a45040b6c58ca6bb6615f0395da0fd0554116e3
Author: Daniel García Moreno <danigm wadobo com>
Date:   Sun Sep 16 10:24:43 2018 +0200

    Custom styles in header to show devel built

 meson.build                   |  1 +
 src/gtr-application.c         | 22 +++++++++++++++++-----
 src/gtranslator.gresource.xml |  1 +
 src/styles.css                | 11 +++++++++++
 4 files changed, 30 insertions(+), 5 deletions(-)
---
diff --git a/meson.build b/meson.build
index b0163155..1195b6c9 100644
--- a/meson.build
+++ b/meson.build
@@ -74,6 +74,7 @@ set_defines = [
   ['PACKAGE_URL', 'https://wiki.gnome.org/Apps/Gtranslator'],
   ['PACKAGE_VERSION', gtranslator_version],
   ['VERSION', gtranslator_version],
+  ['PACKAGE_APPID', application_id],
   ['GETTEXT_PACKAGE', meson.project_name()]
 ]
 
diff --git a/src/gtr-application.c b/src/gtr-application.c
index 7f075820..f126940e 100644
--- a/src/gtr-application.c
+++ b/src/gtr-application.c
@@ -49,15 +49,11 @@
 #include <gdk/gdkx.h>
 #endif
 
-#define GTR_APPLICATION_GET_PRIVATE(object)    (G_TYPE_INSTANCE_GET_PRIVATE ( \
-                                        (object),      \
-                                        GTR_TYPE_APPLICATION,     \
-                                        GtrApplicationPrivate))
-
 typedef struct
 {
   GSettings *settings;
   GSettings *window_settings;
+  GtkCssProvider *provider;
 
   GtrWindow *active_window;
 
@@ -188,6 +184,10 @@ gtr_application_init (GtrApplication *application)
     priv->first_run = TRUE;
   g_free (profiles_file);
 
+  /* Custom css */
+  priv->provider = gtk_css_provider_new ();
+  gtk_css_provider_load_from_resource (priv->provider, "/org/gnome/translator/styles.css");
+
   load_accels ();
 }
 
@@ -199,6 +199,7 @@ gtr_application_dispose (GObject * object)
 
   g_clear_object (&priv->settings);
   g_clear_object (&priv->window_settings);
+  g_clear_object (&priv->provider);
 
   G_OBJECT_CLASS (gtr_application_parent_class)->dispose (object);
 }
@@ -423,6 +424,7 @@ static void
 gtr_application_startup (GApplication *application)
 {
   GtkBuilder *builder;
+  GtrApplicationPrivate *priv = gtr_application_get_instance_private (application);
 
   G_APPLICATION_CLASS (gtr_application_parent_class)->startup (application);
 
@@ -457,6 +459,9 @@ gtr_application_startup (GApplication *application)
   gtk_application_set_app_menu (GTK_APPLICATION (application),
                                 G_MENU_MODEL (gtk_builder_get_object (builder, "appmenu")));
   g_object_unref (builder);
+
+  gtk_style_context_add_provider_for_screen (gdk_screen_get_default (),
+                                             GTK_STYLE_PROVIDER (priv->provider), 600);
 }
 
 static void
@@ -482,6 +487,13 @@ gtr_application_setup_window (GApplication *application,
   window = gtr_application_create_window (GTR_APPLICATION (application));
   gtk_application_add_window (GTK_APPLICATION (application), GTK_WINDOW (window));
 
+  /** loading custom styles **/
+  if (g_strrstr (PACKAGE_APPID, "Devel") != NULL)
+    {
+      GtkStyleContext *ctx = gtk_widget_get_style_context (GTK_WIDGET (window));
+      gtk_style_context_add_class (ctx, "devel");
+    }
+
   /* If it is the first run, the default directory was created in this
    * run, then we show the First run Assistant
    */
diff --git a/src/gtranslator.gresource.xml b/src/gtranslator.gresource.xml
index 355b7260..c9189e11 100644
--- a/src/gtranslator.gresource.xml
+++ b/src/gtranslator.gresource.xml
@@ -1,6 +1,7 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <gresources>
   <gresource prefix="/org/gnome/translator">
+    <file>styles.css</file>
     <file preprocess="xml-stripblanks">gtranslator-ui.xml</file>
     <file preprocess="xml-stripblanks">gtranslator-menu.ui</file>
     <file preprocess="xml-stripblanks">gtr-context.ui</file>
diff --git a/src/styles.css b/src/styles.css
new file mode 100644
index 00000000..b922d85e
--- /dev/null
+++ b/src/styles.css
@@ -0,0 +1,11 @@
+.devel .titlebar {
+  background: transparent -gtk-icontheme("system-run-symbolic") 80% 0/128px 128px no-repeat,
+              linear-gradient(to left,
+                              mix(@theme_selected_bg_color, @theme_bg_color, 0.5) 8%,
+                              @theme_bg_color 25%);
+  color: alpha(@theme_fg_color, 0.1);
+}
+
+.devel .titlebar label {
+  color: @theme_fg_color;
+}