--- /dev/null
+/* Copyright (c) 2009, Igalia
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * * Neither the name of the Nokia Corporation nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+ * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
+ * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
+ * OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <config.h>
+
+#include <modest-scrollable.h>
+
+/**
+ * modest_scrollable_add_with_viewport:
+ * @scrollable: a #ModestScrollable instance
+ * @widget: a #GtkWidget
+ *
+ * adds a widget to the @scrollable, wrapping it into a viewport.
+ * This is useful if @widget does not implement scroll_adjustments
+ * interface.
+ */
+void
+modest_scrollable_add_with_viewport (ModestScrollable *scrollable,
+ GtkWidget *widget)
+{
+ if (MODEST_SCROLLABLE_GET_IFACE (scrollable)->add_with_viewport) {
+ MODEST_SCROLLABLE_GET_IFACE (scrollable)->add_with_viewport (scrollable, widget);
+ }
+}
+
+/**
+ * modest_scrollable_get_vadjustment:
+ * @self: a #ModestScrollable
+ *
+ * obtains the vertical adjustment for @self
+ *
+ * Returns: a #GtkAdjustment
+ */
+GtkAdjustment *
+modest_scrollable_get_vadjustment (ModestScrollable *self)
+{
+ if (MODEST_SCROLLABLE_GET_IFACE (self)->get_vadjustment) {
+ return MODEST_SCROLLABLE_GET_IFACE (self)->get_vadjustment (self);
+ } else {
+ return NULL;
+ }
+}
+
+/**
+ * modest_scrollable_get_hadjustment:
+ * @self: a #ModestScrollable
+ *
+ * obtains the horizontal adjustment for @self
+ *
+ * Returns: a #GtkAdjustment
+ */
+GtkAdjustment *
+modest_scrollable_get_hadjustment (ModestScrollable *self)
+{
+ if (MODEST_SCROLLABLE_GET_IFACE (self)->get_hadjustment) {
+ return MODEST_SCROLLABLE_GET_IFACE (self)->get_hadjustment (self);
+ } else {
+ return NULL;
+ }
+}
+
+/**
+ * modest_scrollable_scroll_to:
+ * @scrollable: a #ModestScrollable instance
+ * @x: the X coordinate to scroll to
+ * @y: the Y coordinate to scroll to
+ *
+ * scrolls softly visible area of @scrollable, to show the coordinates
+ * (@x, @y).
+ */
+void
+modest_scrollable_scroll_to (ModestScrollable *scrollable,
+ const gint x, const gint y)
+{
+ if (MODEST_SCROLLABLE_GET_IFACE (scrollable)->scroll_to) {
+ MODEST_SCROLLABLE_GET_IFACE (scrollable)->scroll_to (scrollable, x, y);
+ }
+}
+
+/**
+ * modest_scrollable_jump_to:
+ * @scrollable: a #ModestScrollable instance
+ * @x: the X coordinate to jump to
+ * @y: the Y coordinate to jump to
+ *
+ * scrolls visible area of @scrollable, to show the coordinates
+ * (@x, @y). Movement is immediate.
+ */
+void
+modest_scrollable_jump_to (ModestScrollable *scrollable,
+ const gint x, const gint y)
+{
+ if (MODEST_SCROLLABLE_GET_IFACE (scrollable)->jump_to) {
+ MODEST_SCROLLABLE_GET_IFACE (scrollable)->jump_to (scrollable, x, y);
+ }
+}
+
+
+
+static void
+modest_scrollable_base_init (gpointer g_iface)
+{
+ static gboolean initialized = FALSE;
+
+ if (!initialized) {
+ /* create interface signals here. */
+ initialized = TRUE;
+
+ g_object_interface_install_property (g_iface,
+ g_param_spec_enum ("vscrollbar_policy",
+ "vscrollbar policy",
+ "Visual policy of the vertical scrollbar",
+ GTK_TYPE_POLICY_TYPE,
+ GTK_POLICY_AUTOMATIC,
+ G_PARAM_READWRITE |
+ G_PARAM_CONSTRUCT));
+
+ g_object_interface_install_property (g_iface,
+ g_param_spec_enum ("hscrollbar_policy",
+ "hscrollbar policy",
+ "Visual policy of the horizontal scrollbar",
+ GTK_TYPE_POLICY_TYPE,
+ GTK_POLICY_AUTOMATIC,
+ G_PARAM_READWRITE |
+ G_PARAM_CONSTRUCT));
+
+
+ }
+}
+
+GType
+modest_scrollable_get_type (void)
+{
+ static GType type = 0;
+
+ if (G_UNLIKELY(type == 0))
+ {
+ static const GTypeInfo info =
+ {
+ sizeof (ModestScrollableIface),
+ modest_scrollable_base_init, /* base_init */
+ NULL, /* base_finalize */
+ NULL, /* class_init */
+ NULL, /* class_finalize */
+ NULL, /* class_data */
+ 0,
+ 0, /* n_preallocs */
+ NULL, /* instance_init */
+ NULL
+ };
+
+ type = g_type_register_static (G_TYPE_INTERFACE,
+ "ModestScrollable", &info, 0);
+
+ }
+
+ return type;
+}
--- /dev/null
+/* Copyright (c) 2009, Igalia
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * * Neither the name of the Nokia Corporation nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+ * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
+ * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
+ * OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef MODEST_SCROLLABLE_H
+#define MODEST_SCROLLABLE_H
+
+#include <glib.h>
+#include <glib-object.h>
+#include <gtk/gtk.h>
+
+G_BEGIN_DECLS
+
+#define MODEST_TYPE_SCROLLABLE (modest_scrollable_get_type ())
+#define MODEST_SCROLLABLE(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), MODEST_TYPE_SCROLLABLE, ModestScrollable))
+#define MODEST_IS_SCROLLABLE(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), MODEST_TYPE_SCROLLABLE))
+#define MODEST_SCROLLABLE_GET_IFACE(inst) (G_TYPE_INSTANCE_GET_INTERFACE ((inst), MODEST_TYPE_SCROLLABLE, ModestScrollableIface))
+
+typedef struct _ModestScrollable ModestScrollable;
+typedef struct _ModestScrollableIface ModestScrollableIface;
+
+struct _ModestScrollableIface
+{
+ GTypeInterface parent;
+
+ void (*add_with_viewport) (ModestScrollable *self, GtkWidget *widget);
+ GtkAdjustment * (*get_vadjustment) (ModestScrollable *self);
+ GtkAdjustment * (*get_hadjustment) (ModestScrollable *self);
+ void (*scroll_to) (ModestScrollable *self, const gint x, const gint y);
+ void (*jump_to) (ModestScrollable *self, const gint x, const gint y);
+
+ /* properties */
+ /* hscrollbar-policy; */
+ /* initial-hint; */
+ /* vscrollbar-policy; */
+};
+
+GType modest_scrollable_get_type (void);
+
+void modest_scrollable_add_with_viewport (ModestScrollable *self, GtkWidget *widget);
+GtkAdjustment * modest_scrollable_get_vadjustment (ModestScrollable *self);
+GtkAdjustment * modest_scrollable_get_hadjustment (ModestScrollable *self);
+void modest_scrollable_scroll_to (ModestScrollable *self, const gint x, const gint y);
+void modest_scrollable_jump_to (ModestScrollable *self, const gint x, const gint y);
+
+
+G_END_DECLS
+
+#endif
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