[gtk+] Add a TextView reftests checking border-windows

[Paolo Borelli <pborelli src gnome org>]

commit 2eeff1eed6bd0bebcf8f1ade535317147a0e9ca9
Author: Paolo Borelli <pborelli gnome org>
Date:   Sun Jun 15 18:11:15 2014 +0200

    Add a TextView reftests checking border-windows
    
    TextView border windows are internal windows used to draw on the gutter
    of the textview (e.g. line numbers). The test uses the gmodule hook to
    programmatically draw on the border-windows at each side of the textview
    and compares the result with 3x3 grid of labels.

 testsuite/reftests/Makefile.am                    |    4 +
 testsuite/reftests/textview-border-windows.c      |   75 +++++++++++++++++++++
 testsuite/reftests/textview-border-windows.css    |   21 ++++++
 testsuite/reftests/textview-border-windows.ref.ui |   74 ++++++++++++++++++++
 testsuite/reftests/textview-border-windows.ui     |   20 ++++++
 5 files changed, 194 insertions(+), 0 deletions(-)
---
diff --git a/testsuite/reftests/Makefile.am b/testsuite/reftests/Makefile.am
index d3842e5..7e296a6 100644
--- a/testsuite/reftests/Makefile.am
+++ b/testsuite/reftests/Makefile.am
@@ -328,6 +328,9 @@ testdata = \
        symbolic-icon-translucent-color.css \
        symbolic-icon-translucent-color.ref.ui \
        symbolic-icon-translucent-color.ui \
+       textview-border-windows.css \
+       textview-border-windows.ref.ui \
+       textview-border-windows.ui \
        textview-margins.css \
        textview-margins.ref.ui \
        textview-margins.ui \
@@ -372,6 +375,7 @@ libreftest_la_LIBADD = $(gtk_reftest_LDADD)
 libreftest_la_SOURCES =                        \
        set-default-direction.c         \
        expand-expander.c               \
+       textview-border-windows.c       \
        $(NULL)
 
 substitutions = \
diff --git a/testsuite/reftests/textview-border-windows.c b/testsuite/reftests/textview-border-windows.c
new file mode 100644
index 0000000..502b18b
--- /dev/null
+++ b/testsuite/reftests/textview-border-windows.c
@@ -0,0 +1,75 @@
+/*
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "config.h"
+
+#include <gtk/gtk.h>
+
+static void
+paint_border (GtkTextView       *text_view,
+              cairo_t           *cr,
+              GtkTextWindowType  type,
+              GtkStyleContext   *context,
+              const char        *class)
+{
+  GdkWindow *window;
+
+  window = gtk_text_view_get_window (text_view, type);
+
+  if (window != NULL &&
+      gtk_cairo_should_draw_window (cr, window))
+    {
+      gint w, h;
+
+      gtk_style_context_save (context);
+      gtk_style_context_add_class (context, class);
+
+      w = gdk_window_get_width (window);
+      h = gdk_window_get_height (window);
+
+      gtk_cairo_transform_to_window (cr, GTK_WIDGET (text_view), window);
+
+      cairo_save (cr);
+      gtk_render_background (context, cr, 0, 0, w, h);
+      cairo_restore (cr);
+
+      gtk_style_context_restore (context);
+    }
+}
+
+G_MODULE_EXPORT gboolean
+paint_border_windows (GtkTextView *text_view,
+                      cairo_t     *cr)
+{
+  GtkStyleContext *context;
+
+  context = gtk_widget_get_style_context (GTK_WIDGET (text_view));
+
+  paint_border (text_view, cr, GTK_TEXT_WINDOW_LEFT, context, "left");
+  paint_border (text_view, cr, GTK_TEXT_WINDOW_RIGHT, context, "right");
+  paint_border (text_view, cr, GTK_TEXT_WINDOW_TOP, context, "top");
+  paint_border (text_view, cr, GTK_TEXT_WINDOW_BOTTOM, context, "bottom");
+
+  return FALSE;
+}
+
+G_MODULE_EXPORT void
+add_border_windows (GtkTextView *text_view)
+{
+  gtk_text_view_set_border_window_size (text_view, GTK_TEXT_WINDOW_LEFT, 30);
+  gtk_text_view_set_border_window_size (text_view, GTK_TEXT_WINDOW_RIGHT, 30);
+  gtk_text_view_set_border_window_size (text_view, GTK_TEXT_WINDOW_TOP, 30);
+  gtk_text_view_set_border_window_size (text_view, GTK_TEXT_WINDOW_BOTTOM, 30);
+}
diff --git a/testsuite/reftests/textview-border-windows.css b/testsuite/reftests/textview-border-windows.css
new file mode 100644
index 0000000..79eb971
--- /dev/null
+++ b/testsuite/reftests/textview-border-windows.css
@@ -0,0 +1,21 @@
+ import "reset-to-defaults.css";
+
+.top,
+#label_n {
+  background-color: blue;
+}
+
+.left,
+#label_w {
+  background-color: green;
+}
+
+.right,
+#label_e {
+  background-color: yellow;
+}
+
+.bottom,
+#label_s {
+  background-color: red;
+}
diff --git a/testsuite/reftests/textview-border-windows.ref.ui 
b/testsuite/reftests/textview-border-windows.ref.ui
new file mode 100644
index 0000000..642feb1
--- /dev/null
+++ b/testsuite/reftests/textview-border-windows.ref.ui
@@ -0,0 +1,74 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!-- Generated with glade 3.18.3 -->
+<interface>
+  <requires lib="gtk+" version="3.0"/>
+  <object class="GtkWindow" id="window">
+    <property name="can_focus">False</property>
+    <property name="type">popup</property>
+    <child>
+      <object class="GtkGrid" id="grid1">
+        <property name="visible">True</property>
+        <property name="can_focus">False</property>
+        <child>
+          <object class="GtkLabel" id="label1">
+            <property name="width_request">100</property>
+            <property name="height_request">100</property>
+            <property name="visible">True</property>
+          </object>
+          <packing>
+            <property name="left_attach">1</property>
+            <property name="top_attach">1</property>
+          </packing>
+        </child>
+        <child>
+          <object class="GtkLabel" id="label_n">
+            <property name="name">label_n</property>
+            <property name="height_request">30</property>
+            <property name="visible">True</property>
+            <property name="can_focus">False</property>
+          </object>
+          <packing>
+            <property name="left_attach">1</property>
+            <property name="top_attach">0</property>
+          </packing>
+        </child>
+        <child>
+          <object class="GtkLabel" id="label_w">
+            <property name="name">label_w</property>
+            <property name="width_request">30</property>
+            <property name="visible">True</property>
+            <property name="can_focus">False</property>
+          </object>
+          <packing>
+            <property name="left_attach">0</property>
+            <property name="top_attach">1</property>
+          </packing>
+        </child>
+        <child>
+          <object class="GtkLabel" id="label_e">
+            <property name="name">label_e</property>
+            <property name="width_request">30</property>
+            <property name="visible">True</property>
+            <property name="can_focus">False</property>
+          </object>
+          <packing>
+            <property name="left_attach">2</property>
+            <property name="top_attach">1</property>
+          </packing>
+        </child>
+        <child>
+          <object class="GtkLabel" id="label_s">
+            <property name="name">label_s</property>
+            <property name="height_request">30</property>
+            <property name="visible">True</property>
+            <property name="can_focus">False</property>
+          </object>
+          <packing>
+            <property name="left_attach">1</property>
+            <property name="top_attach">2</property>
+          </packing>
+        </child>
+      </object>
+    </child>
+  </object>
+</interface>
diff --git a/testsuite/reftests/textview-border-windows.ui b/testsuite/reftests/textview-border-windows.ui
new file mode 100644
index 0000000..7aa6b22
--- /dev/null
+++ b/testsuite/reftests/textview-border-windows.ui
@@ -0,0 +1,20 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!-- Generated with glade 3.18.3 -->
+<interface>
+  <requires lib="gtk+" version="3.0"/>
+  <object class="GtkWindow" id="window">
+    <property name="can_focus">False</property>
+    <property name="type">popup</property>
+    <child>
+      <object class="GtkTextView" id="textview1">
+        <property name="width_request">160</property>
+        <property name="height_request">160</property>
+        <property name="visible">True</property>
+        <property name="can_focus">True</property>
+        <property name="wrap_mode">word</property>
+        <signal name="map" handler="reftest:add_border_windows" swapped="no"/>
+        <signal name="draw" handler="reftest:paint_border_windows" swapped="no"/>
+      </object>
+    </child>
+  </object>
+</interface>