[gtk+] Add a way to test touch features

[Matthias Clasen <matthiasc src gnome org>]

commit 8c3a668d52251f746c18d21118f0de36476557cc
Author: Matthias Clasen <mclasen redhat com>
Date:   Sun Sep 2 23:11:15 2012 -0400

    Add a way to test touch features
    
    The GTK_TEST_TOUCHSCREEN envvar is now checked in entries
    and textviews to allow testing of text handles with other
    kinds of devices.

 gtk/gtkentry.c    |   10 +++++++---
 gtk/gtktextview.c |   10 +++++++---
 2 files changed, 14 insertions(+), 6 deletions(-)
---
diff --git a/gtk/gtkentry.c b/gtk/gtkentry.c
index 40535d9..8ebb977 100644
--- a/gtk/gtkentry.c
+++ b/gtk/gtkentry.c
@@ -318,6 +318,7 @@ enum {
 };
 
 static guint signals[LAST_SIGNAL] = { 0 };
+static gboolean test_touchscreen = FALSE;
 
 typedef enum {
   CURSOR_STANDARD,
@@ -1938,6 +1939,7 @@ gtk_entry_class_init (GtkEntryClass *class)
                                                                G_PARAM_DEPRECATED));
 
   g_type_class_add_private (gobject_class, sizeof (GtkEntryPrivate));
+  test_touchscreen = g_getenv ("GTK_TEST_TOUCHSCREEN") != NULL;
 
   gtk_widget_class_set_accessible_type (widget_class, GTK_TYPE_ENTRY_ACCESSIBLE);
 }
@@ -4044,7 +4046,8 @@ gtk_entry_button_press (GtkWidget      *widget,
       GdkDevice *source;
 
       source = gdk_event_get_source_device ((GdkEvent *) event);
-      is_touchscreen = gdk_device_get_source (source) == GDK_SOURCE_TOUCHSCREEN;
+      is_touchscreen = test_touchscreen ||
+        gdk_device_get_source (source) == GDK_SOURCE_TOUCHSCREEN;
 
       priv->select_words = FALSE;
       priv->select_lines = FALSE;
@@ -4229,7 +4232,8 @@ gtk_entry_button_release (GtkWidget      *widget,
 
       source = gdk_event_get_source_device ((GdkEvent *) event);
 
-      if (gdk_device_get_source (source) == GDK_SOURCE_TOUCHSCREEN)
+      if (test_touchscreen ||
+          gdk_device_get_source (source) == GDK_SOURCE_TOUCHSCREEN)
         gtk_entry_update_handles (entry, GTK_TEXT_HANDLE_MODE_CURSOR);
 
       priv->in_drag = 0;
@@ -4411,7 +4415,7 @@ gtk_entry_motion_notify (GtkWidget      *widget,
         gtk_entry_set_positions (entry, tmp_pos, -1);
 
       /* Update touch handles' position */
-      if (input_source == GDK_SOURCE_TOUCHSCREEN)
+      if (test_touchscreen || input_source == GDK_SOURCE_TOUCHSCREEN)
         gtk_entry_update_handles (entry,
                                   (priv->current_pos == priv->selection_bound) ?
                                   GTK_TEXT_HANDLE_MODE_CURSOR :
diff --git a/gtk/gtktextview.c b/gtk/gtktextview.c
index 9fd3c7d..38af09f 100644
--- a/gtk/gtktextview.c
+++ b/gtk/gtktextview.c
@@ -574,6 +574,7 @@ static gint           text_window_get_height      (GtkTextWindow     *win);
 
 
 static guint signals[LAST_SIGNAL] = { 0 };
+static gboolean test_touchscreen = FALSE;
 
 G_DEFINE_TYPE_WITH_CODE (GtkTextView, gtk_text_view, GTK_TYPE_CONTAINER,
 			 G_IMPLEMENT_INTERFACE (GTK_TYPE_SCROLLABLE, NULL))
@@ -1405,6 +1406,7 @@ gtk_text_view_class_init (GtkTextViewClass *klass)
   g_type_class_add_private (gobject_class, sizeof (GtkTextViewPrivate));
 
   gtk_widget_class_set_accessible_type (widget_class, GTK_TYPE_TEXT_VIEW_ACCESSIBLE);
+  test_touchscreen = g_getenv ("GTK_TEST_TOUCHSCREEN") != NULL;
 }
 
 static void
@@ -4808,7 +4810,8 @@ gtk_text_view_button_press_event (GtkWidget *widget, GdkEventButton *event)
 #endif
 
   device = gdk_event_get_source_device ((GdkEvent *) event);
-  is_touchscreen = gdk_device_get_source (device) == GDK_SOURCE_TOUCHSCREEN;
+  is_touchscreen = test_touchscreen ||
+                   gdk_device_get_source (device) == GDK_SOURCE_TOUCHSCREEN;
 
   if (event->type == GDK_BUTTON_PRESS)
     {
@@ -4952,7 +4955,8 @@ gtk_text_view_button_release_event (GtkWidget *widget, GdkEventButton *event)
           device = gdk_event_get_source_device ((GdkEvent *) event);
 
           if (gtk_widget_is_sensitive (widget) &&
-              gdk_device_get_source (device) == GDK_SOURCE_TOUCHSCREEN)
+              (test_touchscreen ||
+               gdk_device_get_source (device) == GDK_SOURCE_TOUCHSCREEN))
             mode = GTK_TEXT_HANDLE_MODE_CURSOR;
           else
             mode = GTK_TEXT_HANDLE_MODE_NONE;
@@ -6759,7 +6763,7 @@ selection_motion_event_handler (GtkTextView    *text_view,
   text_view->priv->scroll_timeout =
     gdk_threads_add_timeout (50, selection_scan_timeout, text_view);
 
-  if (input_source == GDK_SOURCE_TOUCHSCREEN)
+  if (test_touchscreen || input_source == GDK_SOURCE_TOUCHSCREEN)
     gtk_text_view_update_handles (text_view, GTK_TEXT_HANDLE_MODE_SELECTION);
 
   return TRUE;