[gnome-photos/wip/rishi/zoom: 3/10] Add PhotosImageViewHelper
- From: Debarshi Ray <debarshir src gnome org>
- To: commits-list gnome org
- Cc:
- Subject: [gnome-photos/wip/rishi/zoom: 3/10] Add PhotosImageViewHelper
- Date: Fri, 9 Jun 2017 19:23:15 +0000 (UTC)
commit 2770770c7bb2e20a3eaca7db78da929f06577443
Author: Debarshi Ray <debarshir gnome org>
Date: Fri Jun 2 19:22:59 2017 +0200
Add PhotosImageViewHelper
https://bugzilla.gnome.org/show_bug.cgi?id=742662
src/Makefile.am | 2 +
src/photos-image-view-helper.c | 135 ++++++++++++++++++++++++++++++++++++++++
src/photos-image-view-helper.h | 39 ++++++++++++
3 files changed, 176 insertions(+), 0 deletions(-)
---
diff --git a/src/Makefile.am b/src/Makefile.am
index b0b0936..58bab58 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -117,6 +117,8 @@ gnome_photos_SOURCES = \
photos-icons.h \
photos-image-view.c \
photos-image-view.h \
+ photos-image-view-helper.c \
+ photos-image-view-helper.h \
photos-indexing-notification.c \
photos-indexing-notification.h \
photos-item-manager.c \
diff --git a/src/photos-image-view-helper.c b/src/photos-image-view-helper.c
new file mode 100644
index 0000000..41eede9
--- /dev/null
+++ b/src/photos-image-view-helper.c
@@ -0,0 +1,135 @@
+/*
+ * Photos - access, organize and share your photos on GNOME
+ * Copyright © 2015 – 2017 Red Hat, Inc.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ */
+
+#include "config.h"
+
+#include "photos-image-view-helper.h"
+#include "photos-utils.h"
+
+
+struct _PhotosImageViewHelper
+{
+ GObject parent_instance;
+ gdouble zoom;
+};
+
+enum
+{
+ PROP_0,
+ PROP_ZOOM
+};
+
+
+G_DEFINE_TYPE (PhotosImageViewHelper, photos_image_view_helper, G_TYPE_OBJECT);
+
+
+static void
+photos_image_view_helper_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec)
+{
+ PhotosImageViewHelper *self = PHOTOS_IMAGE_VIEW_HELPER (object);
+
+ switch (prop_id)
+ {
+ case PROP_ZOOM:
+ g_value_set_double (value, self->zoom);
+ break;
+
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+ break;
+ }
+}
+
+
+static void
+photos_image_view_helper_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec
*pspec)
+{
+ PhotosImageViewHelper *self = PHOTOS_IMAGE_VIEW_HELPER (object);
+
+ switch (prop_id)
+ {
+ case PROP_ZOOM:
+ {
+ gdouble zoom;
+
+ zoom = g_value_get_double (value);
+ photos_image_view_helper_set_zoom (self, zoom);
+ break;
+ }
+
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+ break;
+ }
+}
+
+
+static void
+photos_image_view_helper_init (PhotosImageViewHelper *self)
+{
+}
+
+
+static void
+photos_image_view_helper_class_init (PhotosImageViewHelperClass *class)
+{
+ GObjectClass *object_class = G_OBJECT_CLASS (class);
+
+ object_class->get_property = photos_image_view_helper_get_property;
+ object_class->set_property = photos_image_view_helper_set_property;
+
+ g_object_class_install_property (object_class,
+ PROP_ZOOM,
+ g_param_spec_double ("zoom",
+ "Zoom",
+ "Zoom factor",
+ G_MINDOUBLE,
+ G_MAXDOUBLE,
+ 1.0,
+ G_PARAM_EXPLICIT_NOTIFY | G_PARAM_READWRITE));
+}
+
+
+PhotosImageViewHelper *
+photos_image_view_helper_new (void)
+{
+ return g_object_new (PHOTOS_TYPE_IMAGE_VIEW_HELPER, NULL);
+}
+
+
+gdouble
+photos_image_view_helper_get_zoom (PhotosImageViewHelper *self)
+{
+ g_return_val_if_fail (PHOTOS_IS_IMAGE_VIEW_HELPER (self), 0.0);
+ return self->zoom;
+}
+
+
+void
+photos_image_view_helper_set_zoom (PhotosImageViewHelper *self, gdouble zoom)
+{
+ g_return_if_fail (PHOTOS_IS_IMAGE_VIEW_HELPER (self));
+
+ if (photos_utils_equal_double (self->zoom, zoom))
+ return;
+
+ self->zoom = zoom;
+ g_object_notify (G_OBJECT (self), "zoom");
+}
diff --git a/src/photos-image-view-helper.h b/src/photos-image-view-helper.h
new file mode 100644
index 0000000..f751af6
--- /dev/null
+++ b/src/photos-image-view-helper.h
@@ -0,0 +1,39 @@
+/*
+ * Photos - access, organize and share your photos on GNOME
+ * Copyright © 2015 – 2017 Red Hat, Inc.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ */
+
+#ifndef PHOTOS_IMAGE_VIEW_HELPER_H
+#define PHOTOS_IMAGE_VIEW_HELPER_H
+
+#include <glib-object.h>
+
+G_BEGIN_DECLS
+
+#define PHOTOS_TYPE_IMAGE_VIEW_HELPER (photos_image_view_helper_get_type ())
+G_DECLARE_FINAL_TYPE (PhotosImageViewHelper, photos_image_view_helper, PHOTOS, IMAGE_VIEW_HELPER, GObject);
+
+PhotosImageViewHelper *photos_image_view_helper_new (void);
+
+gdouble photos_image_view_helper_get_zoom (PhotosImageViewHelper *self);
+
+void photos_image_view_helper_set_zoom (PhotosImageViewHelper *self, gdouble zoom);
+
+G_END_DECLS
+
+#endif /* PHOTOS_IMAGE_VIEW_HELPER_H */
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