moving from https://github.com/perberos/mate-desktop-environment

1 files changed, 307 insertions, 0 deletions

diff --git a/libcaja-private/caja-horizontal-splitter.c b/libcaja-private/caja-horizontal-splitter.c
new file mode 100644
index 00000000..e31d8a6a
--- /dev/null
+++ b/libcaja-private/caja-horizontal-splitter.c
@@ -0,0 +1,307 @@
+/* -*- Mode: C; indent-tabs-mode: t; c-basic-offset: 8; tab-width: 8 -*- */
+
+/* caja-horizontal-splitter.c - A horizontal splitter with a semi gradient look
+
+   Copyright (C) 1999, 2000 Eazel, Inc.
+
+   The Mate 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.
+
+   The Mate 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 the Mate Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.
+
+   Authors: Ramiro Estrugo <[email protected]>
+*/
+
+#include <config.h>
+#include "caja-horizontal-splitter.h"
+
+#include <eel/eel-gtk-macros.h>
+#include <stdlib.h>
+
+struct CajaHorizontalSplitterDetails
+{
+    guint32 press_time;
+    int press_position;
+    int saved_size;
+};
+
+#define CLOSED_THRESHOLD 4
+#define NOMINAL_SIZE 148
+#define SPLITTER_CLICK_SLOP 4
+#define SPLITTER_CLICK_TIMEOUT	400
+
+static void caja_horizontal_splitter_class_init (CajaHorizontalSplitterClass *horizontal_splitter_class);
+static void caja_horizontal_splitter_init       (CajaHorizontalSplitter      *horizontal_splitter);
+
+EEL_CLASS_BOILERPLATE (CajaHorizontalSplitter,
+                       caja_horizontal_splitter,
+                       GTK_TYPE_HPANED)
+
+static void
+caja_horizontal_splitter_init (CajaHorizontalSplitter *horizontal_splitter)
+{
+    horizontal_splitter->details = g_new0 (CajaHorizontalSplitterDetails, 1);
+}
+
+static void
+caja_horizontal_splitter_finalize (GObject *object)
+{
+    CajaHorizontalSplitter *horizontal_splitter;
+
+    horizontal_splitter = CAJA_HORIZONTAL_SPLITTER (object);
+
+    g_free (horizontal_splitter->details);
+
+    EEL_CALL_PARENT (G_OBJECT_CLASS, finalize, (object));
+}
+
+static void
+splitter_expand (CajaHorizontalSplitter *splitter, int position)
+{
+    g_assert (CAJA_IS_HORIZONTAL_SPLITTER (splitter));
+
+    if (position >= CLOSED_THRESHOLD)
+    {
+        return;
+    }
+
+    position = splitter->details->saved_size;
+    if (position < CLOSED_THRESHOLD)
+    {
+        position = NOMINAL_SIZE;
+    }
+
+    gtk_paned_set_position (GTK_PANED (splitter), position);
+}
+
+static void
+splitter_collapse (CajaHorizontalSplitter *splitter, int position)
+{
+    g_assert (CAJA_IS_HORIZONTAL_SPLITTER (splitter));
+
+    splitter->details->saved_size = position;
+    gtk_paned_set_position (GTK_PANED (splitter), 0);
+}
+
+static void
+splitter_toggle (CajaHorizontalSplitter *splitter, int position)
+{
+    g_assert (CAJA_IS_HORIZONTAL_SPLITTER (splitter));
+
+    if (gtk_paned_get_position (GTK_PANED (splitter)) >= CLOSED_THRESHOLD)
+    {
+        caja_horizontal_splitter_collapse (splitter);
+    }
+    else
+    {
+        caja_horizontal_splitter_expand (splitter);
+    }
+}
+
+static void
+splitter_hide (CajaHorizontalSplitter *splitter)
+{
+    GtkPaned *parent;
+
+    parent = GTK_PANED (splitter);
+
+    gtk_widget_hide (gtk_paned_get_child1 (parent));
+}
+
+static void
+splitter_show (CajaHorizontalSplitter *splitter)
+{
+    GtkPaned *parent;
+
+    parent = GTK_PANED (splitter);
+
+    gtk_widget_show (gtk_paned_get_child1 (parent));
+}
+
+static gboolean
+splitter_is_hidden (CajaHorizontalSplitter *splitter)
+{
+    GtkPaned *parent;
+
+    parent = GTK_PANED (splitter);
+
+    return gtk_widget_get_visible (gtk_paned_get_child1 (parent));
+}
+
+void
+caja_horizontal_splitter_expand (CajaHorizontalSplitter *splitter)
+{
+    splitter_expand (splitter, gtk_paned_get_position (GTK_PANED (splitter)));
+}
+
+void
+caja_horizontal_splitter_hide (CajaHorizontalSplitter *splitter)
+{
+    splitter_hide (splitter);
+}
+
+void
+caja_horizontal_splitter_show (CajaHorizontalSplitter *splitter)
+{
+    splitter_show (splitter);
+}
+
+gboolean
+caja_horizontal_splitter_is_hidden (CajaHorizontalSplitter *splitter)
+{
+    return splitter_is_hidden (splitter);
+}
+
+void
+caja_horizontal_splitter_collapse (CajaHorizontalSplitter *splitter)
+{
+    splitter_collapse (splitter, gtk_paned_get_position (GTK_PANED (splitter)));
+}
+
+/* routine to toggle the open/closed state of the splitter */
+void
+caja_horizontal_splitter_toggle_position (CajaHorizontalSplitter *splitter)
+{
+    splitter_toggle (splitter, gtk_paned_get_position (GTK_PANED (splitter)));
+}
+
+/* CajaHorizontalSplitter public methods */
+GtkWidget *
+caja_horizontal_splitter_new (void)
+{
+    return gtk_widget_new (caja_horizontal_splitter_get_type (), NULL);
+}
+
+/* handle mouse downs by remembering the position and the time */
+static gboolean
+caja_horizontal_splitter_button_press (GtkWidget *widget, GdkEventButton *event)
+{
+    gboolean result;
+    CajaHorizontalSplitter *splitter;
+    int position;
+
+    splitter = CAJA_HORIZONTAL_SPLITTER (widget);
+
+    position = gtk_paned_get_position (GTK_PANED (widget));
+
+    result = EEL_CALL_PARENT_WITH_RETURN_VALUE
+             (GTK_WIDGET_CLASS, button_press_event, (widget, event));
+
+    if (result)
+    {
+        splitter->details->press_time = event->time;
+        splitter->details->press_position = position;
+    }
+
+    return result;
+}
+
+/* handle mouse ups by seeing if it was a tap and toggling the open state accordingly */
+static gboolean
+caja_horizontal_splitter_button_release (GtkWidget *widget, GdkEventButton *event)
+{
+    gboolean result;
+    CajaHorizontalSplitter *splitter;
+    int position, delta, delta_time;
+    splitter = CAJA_HORIZONTAL_SPLITTER (widget);
+
+    position = gtk_paned_get_position (GTK_PANED (widget));
+
+    result = EEL_CALL_PARENT_WITH_RETURN_VALUE
+             (GTK_WIDGET_CLASS, button_release_event, (widget, event));
+
+    if (result)
+    {
+        delta = abs (position - splitter->details->press_position);
+        delta_time = event->time - splitter->details->press_time;
+        if (delta < SPLITTER_CLICK_SLOP && delta_time < SPLITTER_CLICK_TIMEOUT)
+        {
+            caja_horizontal_splitter_toggle_position (splitter);
+        }
+    }
+
+    return result;
+}
+
+static void
+caja_horizontal_splitter_size_allocate (GtkWidget     *widget,
+                                        GtkAllocation *allocation)
+{
+    gint border_width;
+    GtkPaned *paned;
+    GtkAllocation child_allocation;
+    GtkRequisition child_requisition;
+
+    paned = GTK_PANED (widget);
+    border_width = gtk_container_get_border_width (GTK_CONTAINER (paned));
+
+    gtk_widget_set_allocation (widget, allocation);
+
+    if (gtk_paned_get_child2 (paned) != NULL && gtk_widget_get_visible (gtk_paned_get_child2 (paned)))
+    {
+        EEL_CALL_PARENT (GTK_WIDGET_CLASS, size_allocate,
+                         (widget, allocation));
+    }
+    else if (gtk_paned_get_child1 (paned) && gtk_widget_get_visible (gtk_paned_get_child1 (paned)))
+    {
+
+        if (gtk_widget_get_realized (widget))
+        {
+            gdk_window_hide (gtk_paned_get_handle_window (paned));
+        }
+
+        gtk_widget_get_child_requisition (gtk_paned_get_child1 (paned),
+                                          &child_requisition);
+
+        child_allocation.x = allocation->x + border_width;
+        child_allocation.y = allocation->y + border_width;
+        child_allocation.width = MIN (child_requisition.width,
+                                      allocation->width - 2 * border_width);
+        child_allocation.height = MIN (child_requisition.height,
+                                       allocation->height - 2 * border_width);
+
+        gtk_widget_size_allocate (gtk_paned_get_child1 (paned), &child_allocation);
+    }
+    else if (gtk_widget_get_realized (widget))
+    {
+        gdk_window_hide (gtk_paned_get_handle_window (paned));
+    }
+
+}
+
+static void
+caja_horizontal_splitter_class_init (CajaHorizontalSplitterClass *class)
+{
+    GtkWidgetClass *widget_class;
+
+    widget_class = GTK_WIDGET_CLASS (class);
+
+    G_OBJECT_CLASS (class)->finalize = caja_horizontal_splitter_finalize;
+
+    widget_class->size_allocate = caja_horizontal_splitter_size_allocate;
+    widget_class->button_press_event = caja_horizontal_splitter_button_press;
+    widget_class->button_release_event = caja_horizontal_splitter_button_release;
+}
+
+void
+caja_horizontal_splitter_pack2 (CajaHorizontalSplitter *splitter,
+                                GtkWidget                  *child2)
+{
+    GtkPaned *paned;
+
+    g_return_if_fail (GTK_IS_WIDGET (child2));
+    g_return_if_fail (CAJA_IS_HORIZONTAL_SPLITTER (splitter));
+
+    paned = GTK_PANED (splitter);
+    gtk_paned_pack2 (paned, child2, TRUE, FALSE);
+}