[gtksourceview] styleschemepreview: add GtkSourceStyleSchemePreview
- From: Christian Hergert <chergert src gnome org>
- To: commits-list gnome org
- Cc:
- Subject: [gtksourceview] styleschemepreview: add GtkSourceStyleSchemePreview
- Date: Mon, 11 Oct 2021 23:49:05 +0000 (UTC)
commit 26ea24de3dfbf61d9929ff3f4b46e605cc4de8f5
Author: Christian Hergert <chergert redhat com>
Date: Mon Oct 11 16:42:17 2021 -0700
styleschemepreview: add GtkSourceStyleSchemePreview
This is a new widget that can be used to create custom style scheme
choosers (in the hopes that applications start to unify on a visual
representation of schemes).
There will likely be more iteration here before release, but this gets
things started.
Fixes #223
docs/reference/gtksourceview-5.0-sections.txt | 17 ++
docs/reference/gtksourceview-docs.xml.in | 1 +
gtksourceview/GtkSourceView.css | 14 +
gtksourceview/gtksource.h | 1 +
gtksourceview/gtksourcestyleschemepreview.c | 397 ++++++++++++++++++++++++++
gtksourceview/gtksourcestyleschemepreview.h | 47 +++
gtksourceview/gtksourcetypes.h | 1 +
gtksourceview/meson.build | 2 +
tests/meson.build | 1 +
tests/test-preview.c | 85 ++++++
10 files changed, 566 insertions(+)
---
diff --git a/docs/reference/gtksourceview-5.0-sections.txt b/docs/reference/gtksourceview-5.0-sections.txt
index e5fccaa8..3295ac38 100644
--- a/docs/reference/gtksourceview-5.0-sections.txt
+++ b/docs/reference/gtksourceview-5.0-sections.txt
@@ -984,6 +984,23 @@ GTK_SOURCE_STYLE_SCHEME_CHOOSER_WIDGET_GET_CLASS
gtk_source_style_scheme_chooser_widget_get_type
</SECTION>
+<SECTION>
+<FILE>styleschemepreview</FILE>
+GtkSourceStyleSchemePreview
+gtk_source_style_scheme_preview_new
+gtk_source_style_scheme_preview_get_scheme
+<SUBSECTION Standard>
+GtkSourceStyleSchemePreviewClass
+GTK_SOURCE_TYPE_STYLE_SCHEME_PREVIEW
+GTK_SOURCE_STYLE_SCHEME_PREVIEW
+GTK_SOURCE_STYLE_SCHEME_PREVIEW_CONST
+GTK_SOURCE_STYLE_SCHEME_PREVIEW_CLASS
+GTK_SOURCE_IS_STYLE_SCHEME_PREVIEW
+GTK_SOURCE_IS_STYLE_SCHEME_PREVIEW_CLASS
+GTK_SOURCE_STYLE_SCHEME_PREVIEW_GET_CLASS
+gtk_source_style_scheme_preview_get_type
+</SECTION>
+
<SECTION>
<FILE>styleschememanager</FILE>
GtkSourceStyleSchemeManager
diff --git a/docs/reference/gtksourceview-docs.xml.in b/docs/reference/gtksourceview-docs.xml.in
index 7df4e051..9a70a135 100644
--- a/docs/reference/gtksourceview-docs.xml.in
+++ b/docs/reference/gtksourceview-docs.xml.in
@@ -40,6 +40,7 @@
<xi:include href="xml/styleschemechooser.xml"/>
<xi:include href="xml/styleschemechooserbutton.xml"/>
<xi:include href="xml/styleschemechooserwidget.xml"/>
+ <xi:include href="xml/styleschemechooserpreview.xml"/>
</chapter>
<chapter id="completion">
diff --git a/gtksourceview/GtkSourceView.css b/gtksourceview/GtkSourceView.css
index 67d18c51..dbce7367 100644
--- a/gtksourceview/GtkSourceView.css
+++ b/gtksourceview/GtkSourceView.css
@@ -147,3 +147,17 @@ GtkSourceAssistant.informative.question {
GtkSourceAssistant.informative.question image {
background-color: @borders;
}
+
+GtkSourceStyleSchemePreview frame {
+ border-width: 2px;
+}
+GtkSourceStyleSchemePreview.selected frame {
+ border-color: @theme_selected_bg_color;
+}
+GtkSourceStyleSchemePreview.selected image {
+ border-radius: 9999px;
+ background-color: @theme_selected_bg_color;
+ color: @theme_selected_fg_color;
+ padding: 6px;
+ margin: 3px;
+}
diff --git a/gtksourceview/gtksource.h b/gtksourceview/gtksource.h
index 996240c9..8d7c97b0 100644
--- a/gtksourceview/gtksource.h
+++ b/gtksourceview/gtksource.h
@@ -62,6 +62,7 @@
#include "gtksourcestyleschemechooserbutton.h"
#include "gtksourcestyleschemechooserwidget.h"
#include "gtksourcestyleschememanager.h"
+#include "gtksourcestyleschemepreview.h"
#include "gtksourcetag.h"
#include "gtksourceutils.h"
#include "gtksourceversion.h"
diff --git a/gtksourceview/gtksourcestyleschemepreview.c b/gtksourceview/gtksourcestyleschemepreview.c
new file mode 100644
index 00000000..654f7765
--- /dev/null
+++ b/gtksourceview/gtksourcestyleschemepreview.c
@@ -0,0 +1,397 @@
+/*
+ * This file is part of GtkSourceView
+ *
+ * Copyright 2021 Christian Hergert <chergert redhat com>
+ *
+ * GtkSourceView is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * GtkSourceView 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this library; if not, see <http://www.gnu.org/licenses/>.
+ *
+ * SPDX-License-Identifier: LGPL-2.1-or-later
+ */
+
+#include "config.h"
+
+#if ENABLE_FONT_CONFIG
+# include <fontconfig/fontconfig.h>
+# include <pango/pangocairo.h>
+# include <pango/pangofc-fontmap.h>
+#endif
+
+#include "gtksourcebuffer.h"
+#include "gtksourcelanguage.h"
+#include "gtksourcelanguagemanager.h"
+#include "gtksourcestylescheme.h"
+#include "gtksourcestyleschemepreview.h"
+#include "gtksourceview.h"
+
+/**
+ * SECTION:sourcestyleschemepreview
+ * @title: GtkSourceStyleSchemePreview
+ * @short_description: a preview widget for #GtkSourceStyleScheme
+ *
+ * This widget provides a convenient #GtkWidget to preview a #GtkSourceStyleScheme.
+ *
+ * The #GtkSourceStyleSchemePreview:selected property can be used to manage
+ * the selection state of a single preview widget.
+ *
+ * Since: 5.4
+ */
+
+struct _GtkSourceStyleSchemePreview
+{
+ GtkWidget parent_instance;
+ GtkSourceStyleScheme *scheme;
+ GtkImage *image;
+ guint selected : 1;
+};
+
+G_DEFINE_TYPE (GtkSourceStyleSchemePreview, gtk_source_style_scheme_preview, GTK_TYPE_WIDGET)
+
+enum {
+ PROP_0,
+ PROP_SCHEME,
+ PROP_SELECTED,
+ N_PROPS
+};
+
+enum {
+ ACTIVATE,
+ N_SIGNALS
+};
+
+static GParamSpec *properties [N_PROPS];
+static guint signals [N_SIGNALS];
+
+static GtkCssProvider *css_provider;
+#if ENABLE_FONT_CONFIG
+static FcConfig *map_font_config;
+#endif
+
+static void
+load_override_font (GtkSourceView *view)
+{
+ static gsize initialized;
+ PangoFontDescription *font_desc;
+ PangoFontMap *font_map;
+
+ if (g_once_init_enter (&initialized))
+ {
+#if ENABLE_FONT_CONFIG
+ const gchar *font_path = PACKAGE_DATADIR"/fonts/BuilderBlocks.ttf";
+ FcConfig *config = FcInitLoadConfigAndFonts ();
+ if (!g_file_test (font_path, G_FILE_TEST_IS_REGULAR))
+ g_debug ("\"%s\" is missing or inaccessible", font_path);
+ FcConfigAppFontAddFile (config, (const FcChar8 *)font_path);
+ map_font_config = config;
+#endif
+
+ css_provider = gtk_css_provider_new ();
+ gtk_css_provider_load_from_data (css_provider, "textview, textview text { font-family:
BuilderBlocks; font-size: 4pt; }", -1);
+
+ g_once_init_leave (&initialized, TRUE);
+ }
+
+ gtk_style_context_add_provider (gtk_widget_get_style_context (GTK_WIDGET (view)),
+ GTK_STYLE_PROVIDER (css_provider),
+ GTK_STYLE_PROVIDER_PRIORITY_APPLICATION-1);
+
+#if ENABLE_FONT_CONFIG
+ font_map = pango_cairo_font_map_new_for_font_type (CAIRO_FONT_TYPE_FT);
+ pango_fc_font_map_set_config (PANGO_FC_FONT_MAP (font_map), map_font_config);
+ gtk_widget_set_font_map (GTK_WIDGET (view), font_map);
+ font_desc = pango_font_description_from_string ("BuilderBlocks 4");
+
+ g_assert (map_font_config != NULL);
+ g_assert (font_map != NULL);
+ g_assert (font_desc != NULL);
+
+ pango_font_description_free (font_desc);
+ g_object_unref (font_map);
+#endif
+}
+
+static void
+on_click_pressed_cb (GtkSourceStyleSchemePreview *self,
+ int n_presses,
+ double x,
+ double y,
+ GtkGestureClick *click)
+{
+ g_assert (GTK_SOURCE_IS_STYLE_SCHEME_PREVIEW (self));
+ g_assert (GTK_IS_GESTURE_CLICK (click));
+
+ g_signal_emit (self, signals [ACTIVATE], 0);
+}
+
+static void
+gtk_source_style_scheme_preview_constructed (GObject *object)
+{
+ GtkSourceStyleSchemePreview *self = (GtkSourceStyleSchemePreview *)object;
+ GtkSourceLanguage *lang;
+ GtkSourceBuffer *buffer;
+ GtkSourceView *view;
+ GtkOverlay *overlay;
+ const char *name;
+ GtkLabel *label;
+ GtkFrame *frame;
+
+ G_OBJECT_CLASS (gtk_source_style_scheme_preview_parent_class)->constructed (object);
+
+ if (self->scheme == NULL)
+ {
+ static gboolean warned;
+ if (!warned)
+ g_warning ("Attempt to create GtkSourceStyleSchemePreview without a scheme!");
+ warned = TRUE;
+ return;
+ }
+
+ name = gtk_source_style_scheme_get_name (self->scheme);
+ gtk_widget_set_tooltip_text (GTK_WIDGET (self), name);
+
+ frame = g_object_new (GTK_TYPE_FRAME,
+ "can-focus", FALSE,
+ "focusable", FALSE,
+ NULL);
+ view = g_object_new (GTK_SOURCE_TYPE_VIEW,
+ "focusable", FALSE,
+ "can-focus", FALSE,
+ "cursor-visible", FALSE,
+ "editable", FALSE,
+ "right-margin-position", 20,
+ "show-right-margin", TRUE,
+ "top-margin", 12,
+ "bottom-margin", 12,
+ "left-margin", 0,
+ "right-margin", 6,
+ "width-request", 100,
+ "show-line-numbers", TRUE,
+ NULL);
+ overlay = g_object_new (GTK_TYPE_OVERLAY, NULL);
+ label = g_object_new (GTK_TYPE_LABEL, NULL);
+ self->image = g_object_new (GTK_TYPE_IMAGE,
+ "icon-name", "object-select-symbolic",
+ "halign", GTK_ALIGN_END,
+ "valign", GTK_ALIGN_END,
+ "visible", FALSE,
+ NULL);
+
+ lang = gtk_source_language_manager_get_language (gtk_source_language_manager_get_default (), "c");
+ buffer = GTK_SOURCE_BUFFER (gtk_text_view_get_buffer (GTK_TEXT_VIEW (view)));
+
+ gtk_source_buffer_set_style_scheme (buffer, self->scheme);
+ gtk_source_buffer_set_language (buffer, lang);
+
+ gtk_text_buffer_set_text (GTK_TEXT_BUFFER (buffer), "\
+#include <glib.h>\n\
+ /* comment */\n\
+static void f () { return; }\n\
+typedef struct {\n\
+ int i; double d;\n\
+ }; char *s = \"string\";", -1);
+ load_override_font (view);
+
+ gtk_frame_set_child (frame, GTK_WIDGET (overlay));
+ gtk_overlay_set_child (overlay, GTK_WIDGET (view));
+ gtk_overlay_add_overlay (overlay, GTK_WIDGET (label));
+ gtk_overlay_add_overlay (overlay, GTK_WIDGET (self->image));
+ gtk_widget_set_parent (GTK_WIDGET (frame), GTK_WIDGET (self));
+}
+
+static void
+gtk_source_style_scheme_preview_dispose (GObject *object)
+{
+ GtkSourceStyleSchemePreview *self = (GtkSourceStyleSchemePreview *)object;
+ GtkWidget *child;
+
+ while ((child = gtk_widget_get_first_child (GTK_WIDGET (self))))
+ {
+ gtk_widget_unparent (child);
+ }
+
+ G_OBJECT_CLASS (gtk_source_style_scheme_preview_parent_class)->dispose (object);
+}
+
+static void
+gtk_source_style_scheme_preview_get_property (GObject *object,
+ guint prop_id,
+ GValue *value,
+ GParamSpec *pspec)
+{
+ GtkSourceStyleSchemePreview *self = GTK_SOURCE_STYLE_SCHEME_PREVIEW (object);
+
+ switch (prop_id)
+ {
+ case PROP_SCHEME:
+ g_value_set_object (value, self->scheme);
+ break;
+
+ case PROP_SELECTED:
+ g_value_set_boolean (value, gtk_source_style_scheme_preview_get_selected (self));
+ break;
+
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+ }
+}
+
+static void
+gtk_source_style_scheme_preview_set_property (GObject *object,
+ guint prop_id,
+ const GValue *value,
+ GParamSpec *pspec)
+{
+ GtkSourceStyleSchemePreview *self = GTK_SOURCE_STYLE_SCHEME_PREVIEW (object);
+
+ switch (prop_id)
+ {
+ case PROP_SCHEME:
+ self->scheme = g_value_dup_object (value);
+ break;
+
+ case PROP_SELECTED:
+ gtk_source_style_scheme_preview_set_selected (self, g_value_get_boolean (value));
+ break;
+
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+ }
+}
+
+static void
+gtk_source_style_scheme_preview_class_init (GtkSourceStyleSchemePreviewClass *klass)
+{
+ GObjectClass *object_class = G_OBJECT_CLASS (klass);
+ GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (klass);
+
+ object_class->constructed = gtk_source_style_scheme_preview_constructed;
+ object_class->dispose = gtk_source_style_scheme_preview_dispose;
+ object_class->get_property = gtk_source_style_scheme_preview_get_property;
+ object_class->set_property = gtk_source_style_scheme_preview_set_property;
+
+ properties [PROP_SCHEME] =
+ g_param_spec_object ("scheme",
+ "Scheme",
+ "The style scheme to preview",
+ GTK_SOURCE_TYPE_STYLE_SCHEME,
+ (G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY | G_PARAM_STATIC_STRINGS));
+
+ properties [PROP_SELECTED] =
+ g_param_spec_boolean ("selected",
+ "Selected",
+ "If the preview should have the selected state",
+ FALSE,
+ (G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
+
+ g_object_class_install_properties (object_class, N_PROPS, properties);
+
+ signals [ACTIVATE] = g_signal_new ("activate",
+ G_TYPE_FROM_CLASS (klass),
+ G_SIGNAL_RUN_LAST,
+ 0,
+ NULL, NULL, NULL,
+ G_TYPE_NONE, 0);
+
+ gtk_widget_class_set_activate_signal (widget_class, signals [ACTIVATE]);
+ gtk_widget_class_set_layout_manager_type (widget_class, GTK_TYPE_BIN_LAYOUT);
+ gtk_widget_class_set_css_name (widget_class, "GtkSourceStyleSchemePreview");
+}
+
+static void
+gtk_source_style_scheme_preview_init (GtkSourceStyleSchemePreview *self)
+{
+ GtkGesture *gesture;
+
+ gesture = gtk_gesture_click_new ();
+ gtk_event_controller_set_propagation_phase (GTK_EVENT_CONTROLLER (gesture), GTK_PHASE_CAPTURE);
+ g_signal_connect_object (gesture,
+ "pressed",
+ G_CALLBACK (on_click_pressed_cb),
+ self,
+ G_CONNECT_SWAPPED);
+ gtk_widget_add_controller (GTK_WIDGET (self), GTK_EVENT_CONTROLLER (gesture));
+}
+
+/**
+ * gtk_source_style_scheme_preview_new:
+ * @scheme: a #GtkSourceStyleScheme
+ *
+ * Creates a new #GtkSourceStyleSchemePreview to preview the style scheme
+ * provided in @scheme.
+ *
+ * Returns: (transfer full): a #GtkWidget
+ *
+ * Since: 5.4
+ */
+GtkWidget *
+gtk_source_style_scheme_preview_new (GtkSourceStyleScheme *scheme)
+{
+ g_return_val_if_fail (GTK_SOURCE_IS_STYLE_SCHEME (scheme), NULL);
+
+ return g_object_new (GTK_SOURCE_TYPE_STYLE_SCHEME_PREVIEW,
+ "scheme", scheme,
+ NULL);
+}
+
+/**
+ * gtk_source_style_scheme_preview_get_scheme:
+ * @self: a #GtkSourceStyleSchemePreview
+ *
+ * Gets the #GtkSourceStyleScheme previewed by the widget.
+ *
+ * Returns: (transfer none): a #GtkSourceStyleScheme
+ *
+ * Since: 5.4
+ */
+GtkSourceStyleScheme *
+gtk_source_style_scheme_preview_get_scheme (GtkSourceStyleSchemePreview *self)
+{
+ g_return_val_if_fail (GTK_SOURCE_IS_STYLE_SCHEME_PREVIEW (self), NULL);
+
+ return self->scheme;
+}
+
+gboolean
+gtk_source_style_scheme_preview_get_selected (GtkSourceStyleSchemePreview *self)
+{
+ g_return_val_if_fail (GTK_SOURCE_IS_STYLE_SCHEME_PREVIEW (self), FALSE);
+
+ return self->selected;
+}
+
+void
+gtk_source_style_scheme_preview_set_selected (GtkSourceStyleSchemePreview *self,
+ gboolean selected)
+{
+ g_return_if_fail (GTK_SOURCE_IS_STYLE_SCHEME_PREVIEW (self));
+
+ selected = !!selected;
+
+ if (selected != self->selected)
+ {
+ self->selected = selected;
+
+ if (selected)
+ {
+ gtk_widget_add_css_class (GTK_WIDGET (self), "selected");
+ gtk_widget_show (GTK_WIDGET (self->image));
+ }
+ else
+ {
+ gtk_widget_remove_css_class (GTK_WIDGET (self), "selected");
+ gtk_widget_hide (GTK_WIDGET (self->image));
+ }
+
+ g_object_notify_by_pspec (G_OBJECT (self), properties [PROP_SELECTED]);
+ }
+}
diff --git a/gtksourceview/gtksourcestyleschemepreview.h b/gtksourceview/gtksourcestyleschemepreview.h
new file mode 100644
index 00000000..0ef7889f
--- /dev/null
+++ b/gtksourceview/gtksourcestyleschemepreview.h
@@ -0,0 +1,47 @@
+/*
+ * This file is part of GtkSourceView
+ *
+ * Copyright 2021 Christian Hergert <chergert redhat com>
+ *
+ * GtkSourceView is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * GtkSourceView 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this library; if not, see <http://www.gnu.org/licenses/>.
+ *
+ * SPDX-License-Identifier: LGPL-2.1-or-later
+ */
+
+#pragma once
+
+#if !defined (GTK_SOURCE_H_INSIDE) && !defined (GTK_SOURCE_COMPILATION)
+#error "Only <gtksourceview/gtksource.h> can be included directly."
+#endif
+
+#include <gtk/gtk.h>
+
+#include "gtksourcetypes.h"
+
+#define GTK_SOURCE_TYPE_STYLE_SCHEME_PREVIEW (gtk_source_style_scheme_preview_get_type())
+
+GTK_SOURCE_AVAILABLE_IN_5_4
+G_DECLARE_FINAL_TYPE (GtkSourceStyleSchemePreview, gtk_source_style_scheme_preview, GTK_SOURCE,
STYLE_SCHEME_PREVIEW, GtkWidget)
+
+GTK_SOURCE_AVAILABLE_IN_5_4
+GtkWidget *gtk_source_style_scheme_preview_new (GtkSourceStyleScheme *scheme);
+GTK_SOURCE_AVAILABLE_IN_5_4
+GtkSourceStyleScheme *gtk_source_style_scheme_preview_get_scheme (GtkSourceStyleSchemePreview *self);
+GTK_SOURCE_AVAILABLE_IN_5_4
+gboolean gtk_source_style_scheme_preview_get_selected (GtkSourceStyleSchemePreview *self);
+GTK_SOURCE_AVAILABLE_IN_5_4
+void gtk_source_style_scheme_preview_set_selected (GtkSourceStyleSchemePreview *self,
+ gboolean selected);
+
+G_END_DECLS
diff --git a/gtksourceview/gtksourcetypes.h b/gtksourceview/gtksourcetypes.h
index 2a1849fd..a6a8da02 100644
--- a/gtksourceview/gtksourcetypes.h
+++ b/gtksourceview/gtksourcetypes.h
@@ -74,6 +74,7 @@ typedef struct _GtkSourceStyleSchemeChooser GtkSourceStyleSchemeChooser;
typedef struct _GtkSourceStyleSchemeChooserWidget GtkSourceStyleSchemeChooserWidget;
typedef struct _GtkSourceStyleScheme GtkSourceStyleScheme;
typedef struct _GtkSourceStyleSchemeManager GtkSourceStyleSchemeManager;
+typedef struct _GtkSourceStyleSchemePreview GtkSourceStyleSchemePreview;
typedef struct _GtkSourceView GtkSourceView;
G_END_DECLS
diff --git a/gtksourceview/meson.build b/gtksourceview/meson.build
index 74ad73a0..090f7a9c 100644
--- a/gtksourceview/meson.build
+++ b/gtksourceview/meson.build
@@ -49,6 +49,7 @@ core_public_h = files([
'gtksourcestyleschemechooserbutton.h',
'gtksourcestyleschemechooserwidget.h',
'gtksourcestyleschememanager.h',
+ 'gtksourcestyleschemepreview.h',
'gtksourcetag.h',
'gtksourcetypes.h',
'gtksourceutils.h',
@@ -98,6 +99,7 @@ core_public_c = files([
'gtksourcestyleschemechooserbutton.c',
'gtksourcestyleschemechooserwidget.c',
'gtksourcestyleschememanager.c',
+ 'gtksourcestyleschemepreview.c',
'gtksourcetag.c',
'gtksourceutils.c',
'gtksourceversion.c',
diff --git a/tests/meson.build b/tests/meson.build
index 7c4a72bd..0d3fd2c3 100644
--- a/tests/meson.build
+++ b/tests/meson.build
@@ -12,6 +12,7 @@ tests_sources = {
'space-drawing': ['test-space-drawing.c'],
'load': ['test-load.c'],
'widget': ['test-widget.c'],
+ 'preview': ['test-preview.c'],
}
tests_resources = {
diff --git a/tests/test-preview.c b/tests/test-preview.c
new file mode 100644
index 00000000..e2642d47
--- /dev/null
+++ b/tests/test-preview.c
@@ -0,0 +1,85 @@
+#include <gtksourceview/gtksource.h>
+
+static gboolean
+close_request (GtkWidget *window,
+ GMainLoop *main_loop)
+{
+ g_main_loop_quit (main_loop);
+ return FALSE;
+}
+
+static void
+on_activate (GtkSourceStyleSchemePreview *preview,
+ GtkBox *box)
+{
+ GtkSourceStyleScheme *scheme;
+
+ g_assert (GTK_SOURCE_IS_STYLE_SCHEME_PREVIEW (preview));
+ g_assert (GTK_IS_BOX (box));
+
+ scheme = gtk_source_style_scheme_preview_get_scheme (preview);
+
+ g_print ("Selected: %s\n", gtk_source_style_scheme_get_name (scheme));
+
+ for (GtkWidget *child = gtk_widget_get_first_child (GTK_WIDGET (box));
+ child;
+ child = gtk_widget_get_next_sibling (child))
+ {
+ gtk_source_style_scheme_preview_set_selected (GTK_SOURCE_STYLE_SCHEME_PREVIEW (child), FALSE);
+ }
+
+ gtk_source_style_scheme_preview_set_selected (preview, TRUE);
+}
+
+int
+main (int argc,
+ char *argv[])
+{
+ GMainLoop *main_loop = g_main_loop_new (NULL, FALSE);
+ GtkSourceStyleSchemeManager *manager;
+ const char * const *ids;
+ GtkScrolledWindow *scroller;
+ GtkWindow *window;
+ GtkBox *box;
+
+ gtk_init ();
+ gtk_source_init ();
+
+ manager = gtk_source_style_scheme_manager_get_default ();
+ ids = gtk_source_style_scheme_manager_get_scheme_ids (manager);
+
+ window = g_object_new (GTK_TYPE_WINDOW,
+ NULL);
+ scroller = g_object_new (GTK_TYPE_SCROLLED_WINDOW,
+ "propagate-natural-width", TRUE,
+ "hscrollbar-policy", GTK_POLICY_NEVER,
+ "min-content-height", 250,
+ NULL);
+ box = g_object_new (GTK_TYPE_BOX,
+ "margin-top", 12,
+ "margin-bottom", 12,
+ "margin-start", 12,
+ "margin-end", 12,
+ "orientation", GTK_ORIENTATION_VERTICAL,
+ "spacing", 12,
+ NULL);
+
+ for (guint i = 0; ids[i]; i++)
+ {
+ GtkSourceStyleScheme *scheme = gtk_source_style_scheme_manager_get_scheme (manager, ids[i]);
+ GtkWidget *preview = gtk_source_style_scheme_preview_new (scheme);
+
+ g_signal_connect (preview, "activate", G_CALLBACK (on_activate), box);
+ gtk_box_append (box, preview);
+ }
+
+ gtk_window_set_child (window, GTK_WIDGET (scroller));
+ gtk_scrolled_window_set_child (scroller, GTK_WIDGET (box));
+
+ gtk_window_present (window);
+ g_signal_connect (window, "close-request", G_CALLBACK (close_request), main_loop);
+ g_main_loop_run (main_loop);
+ g_main_loop_unref (main_loop);
+
+ return 0;
+}
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