aboutsummaryrefslogtreecommitdiffstats
path: root/widgets/e-paned/e-paned.c
diff options
context:
space:
mode:
Diffstat (limited to 'widgets/e-paned/e-paned.c')
-rw-r--r--widgets/e-paned/e-paned.c587
1 files changed, 587 insertions, 0 deletions
diff --git a/widgets/e-paned/e-paned.c b/widgets/e-paned/e-paned.c
new file mode 100644
index 0000000000..f2db002e6e
--- /dev/null
+++ b/widgets/e-paned/e-paned.c
@@ -0,0 +1,587 @@
+/* EPaned - A slightly more advanced paned widget.
+ * Copyright (C) 2000 Helix Code, Inc.
+ *
+ * Author: Christopher James Lahey <clahey@helixcode.com>
+ *
+ * based on GtkPaned from Gtk+. Gtk+ Copyright notice follows.
+ */
+
+/* GTK - The GIMP Toolkit
+ * Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
+ *
+ * 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, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+/*
+ * Modified by the GTK+ Team and others 1997-2000. See the AUTHORS
+ * file for a list of people on the GTK+ Team. See the ChangeLog
+ * files for a list of changes. These files are distributed with
+ * GTK+ at ftp://ftp.gtk.org/pub/gtk/.
+ */
+
+#include "e-paned.h"
+
+enum {
+ ARG_0,
+ ARG_HANDLE_SIZE
+};
+
+static void e_paned_class_init (EPanedClass *klass);
+static void e_paned_init (EPaned *paned);
+static void e_paned_set_arg (GtkObject *object,
+ GtkArg *arg,
+ guint arg_id);
+static void e_paned_get_arg (GtkObject *object,
+ GtkArg *arg,
+ guint arg_id);
+static void e_paned_realize (GtkWidget *widget);
+static void e_paned_map (GtkWidget *widget);
+static void e_paned_unmap (GtkWidget *widget);
+static void e_paned_unrealize (GtkWidget *widget);
+static gint e_paned_expose (GtkWidget *widget,
+ GdkEventExpose *event);
+static void e_paned_add (GtkContainer *container,
+ GtkWidget *widget);
+static void e_paned_remove (GtkContainer *container,
+ GtkWidget *widget);
+static void e_paned_forall (GtkContainer *container,
+ gboolean include_internals,
+ GtkCallback callback,
+ gpointer callback_data);
+static GtkType e_paned_child_type (GtkContainer *container);
+
+static GtkContainerClass *parent_class = NULL;
+
+
+GtkType
+e_paned_get_type (void)
+{
+ static GtkType paned_type = 0;
+
+ if (!paned_type)
+ {
+ static const GtkTypeInfo paned_info =
+ {
+ "EPaned",
+ sizeof (EPaned),
+ sizeof (EPanedClass),
+ (GtkClassInitFunc) e_paned_class_init,
+ (GtkObjectInitFunc) e_paned_init,
+ /* reserved_1 */ NULL,
+ /* reserved_2 */ NULL,
+ (GtkClassInitFunc) NULL,
+ };
+
+ paned_type = gtk_type_unique (GTK_TYPE_CONTAINER, &paned_info);
+ }
+
+ return paned_type;
+}
+
+static void
+e_paned_class_init (EPanedClass *class)
+{
+ GtkObjectClass *object_class;
+ GtkWidgetClass *widget_class;
+ GtkContainerClass *container_class;
+
+ object_class = (GtkObjectClass *) class;
+ widget_class = (GtkWidgetClass *) class;
+ container_class = (GtkContainerClass *) class;
+
+ parent_class = gtk_type_class (GTK_TYPE_CONTAINER);
+
+ object_class->set_arg = e_paned_set_arg;
+ object_class->get_arg = e_paned_get_arg;
+
+ widget_class->realize = e_paned_realize;
+ widget_class->map = e_paned_map;
+ widget_class->unmap = e_paned_unmap;
+ widget_class->unrealize = e_paned_unrealize;
+ widget_class->expose_event = e_paned_expose;
+
+ container_class->add = e_paned_add;
+ container_class->remove = e_paned_remove;
+ container_class->forall = e_paned_forall;
+ container_class->child_type = e_paned_child_type;
+
+ gtk_object_add_arg_type("EPaned::handle_size", GTK_TYPE_UINT,
+ GTK_ARG_READWRITE, ARG_HANDLE_SIZE);
+}
+
+static GtkType
+e_paned_child_type (GtkContainer *container)
+{
+ if (!E_PANED (container)->child1 || !E_PANED (container)->child2)
+ return GTK_TYPE_WIDGET;
+ else
+ return GTK_TYPE_NONE;
+}
+
+static void
+e_paned_init (EPaned *paned)
+{
+ GTK_WIDGET_UNSET_FLAGS (paned, GTK_NO_WINDOW);
+
+ paned->child1 = NULL;
+ paned->child2 = NULL;
+ paned->handle = NULL;
+ paned->xor_gc = NULL;
+ paned->cursor_type = GDK_CROSS;
+
+ paned->handle_width = 5;
+ paned->handle_height = 5;
+ paned->handle_size = 5;
+ paned->position_set = FALSE;
+ paned->last_allocation = -1;
+ paned->in_drag = FALSE;
+
+ paned->handle_xpos = -1;
+ paned->handle_ypos = -1;
+}
+
+static void
+e_paned_set_arg (GtkObject *object,
+ GtkArg *arg,
+ guint arg_id)
+{
+ EPaned *paned = E_PANED (object);
+
+ switch (arg_id)
+ {
+ case ARG_HANDLE_SIZE:
+ e_paned_set_handle_size (paned, GTK_VALUE_UINT (*arg));
+ break;
+ default:
+ break;
+ }
+}
+
+static void
+e_paned_get_arg (GtkObject *object,
+ GtkArg *arg,
+ guint arg_id)
+{
+ EPaned *paned = E_PANED (object);
+
+ switch (arg_id)
+ {
+ case ARG_HANDLE_SIZE:
+ GTK_VALUE_UINT (*arg) = paned->handle_size;
+ break;
+ default:
+ arg->type = GTK_TYPE_INVALID;
+ break;
+ }
+}
+
+static void
+e_paned_realize (GtkWidget *widget)
+{
+ EPaned *paned;
+ GdkWindowAttr attributes;
+ gint attributes_mask;
+
+ g_return_if_fail (widget != NULL);
+ g_return_if_fail (E_IS_PANED (widget));
+
+ GTK_WIDGET_SET_FLAGS (widget, GTK_REALIZED);
+ paned = E_PANED (widget);
+
+ attributes.x = widget->allocation.x;
+ attributes.y = widget->allocation.y;
+ attributes.width = widget->allocation.width;
+ attributes.height = widget->allocation.height;
+ attributes.window_type = GDK_WINDOW_CHILD;
+ attributes.wclass = GDK_INPUT_OUTPUT;
+ attributes.visual = gtk_widget_get_visual (widget);
+ attributes.colormap = gtk_widget_get_colormap (widget);
+ attributes.event_mask = gtk_widget_get_events (widget) | GDK_EXPOSURE_MASK;
+ attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP;
+
+ widget->window = gdk_window_new (gtk_widget_get_parent_window(widget),
+ &attributes, attributes_mask);
+ gdk_window_set_user_data (widget->window, paned);
+
+ attributes.x = paned->handle_xpos;
+ attributes.y = paned->handle_ypos;
+ attributes.width = paned->handle_width;
+ attributes.height = paned->handle_height;
+ attributes.cursor = gdk_cursor_new (paned->cursor_type);
+ attributes.event_mask |= (GDK_BUTTON_PRESS_MASK |
+ GDK_BUTTON_RELEASE_MASK |
+ GDK_POINTER_MOTION_MASK |
+ GDK_POINTER_MOTION_HINT_MASK);
+ attributes_mask |= GDK_WA_CURSOR;
+
+ paned->handle = gdk_window_new (widget->window,
+ &attributes, attributes_mask);
+ gdk_window_set_user_data (paned->handle, paned);
+ gdk_cursor_destroy (attributes.cursor);
+
+ widget->style = gtk_style_attach (widget->style, widget->window);
+
+ gtk_style_set_background (widget->style, widget->window, GTK_STATE_NORMAL);
+ gtk_style_set_background (widget->style, paned->handle, GTK_STATE_NORMAL);
+
+ gdk_window_set_back_pixmap (widget->window, NULL, TRUE);
+
+ gdk_window_show (paned->handle);
+}
+
+static void
+e_paned_map (GtkWidget *widget)
+{
+ EPaned *paned;
+
+ g_return_if_fail (widget != NULL);
+ g_return_if_fail (E_IS_PANED (widget));
+
+ GTK_WIDGET_SET_FLAGS (widget, GTK_MAPPED);
+ paned = E_PANED (widget);
+
+ if (paned->child1 &&
+ GTK_WIDGET_VISIBLE (paned->child1) &&
+ !GTK_WIDGET_MAPPED (paned->child1))
+ gtk_widget_map (paned->child1);
+ if (paned->child2 &&
+ GTK_WIDGET_VISIBLE (paned->child2) &&
+ !GTK_WIDGET_MAPPED (paned->child2))
+ gtk_widget_map (paned->child2);
+
+ gdk_window_show (widget->window);
+}
+
+static void
+e_paned_unmap (GtkWidget *widget)
+{
+ g_return_if_fail (widget != NULL);
+ g_return_if_fail (E_IS_PANED (widget));
+
+ GTK_WIDGET_UNSET_FLAGS (widget, GTK_MAPPED);
+
+ gdk_window_hide (widget->window);
+}
+
+static void
+e_paned_unrealize (GtkWidget *widget)
+{
+ EPaned *paned;
+
+ g_return_if_fail (widget != NULL);
+ g_return_if_fail (E_IS_PANED (widget));
+
+ paned = E_PANED (widget);
+
+ if (paned->xor_gc)
+ {
+ gdk_gc_destroy (paned->xor_gc);
+ paned->xor_gc = NULL;
+ }
+
+ if (paned->handle)
+ {
+ gdk_window_set_user_data (paned->handle, NULL);
+ gdk_window_destroy (paned->handle);
+ paned->handle = NULL;
+ }
+
+ if (GTK_WIDGET_CLASS (parent_class)->unrealize)
+ (* GTK_WIDGET_CLASS (parent_class)->unrealize) (widget);
+}
+
+static gint
+e_paned_expose (GtkWidget *widget,
+ GdkEventExpose *event)
+{
+ EPaned *paned;
+ GdkEventExpose child_event;
+
+ g_return_val_if_fail (widget != NULL, FALSE);
+ g_return_val_if_fail (E_IS_PANED (widget), FALSE);
+ g_return_val_if_fail (event != NULL, FALSE);
+
+ if (GTK_WIDGET_DRAWABLE (widget))
+ {
+ paned = E_PANED (widget);
+
+ if (event->window == paned->handle)
+ {
+ child_event = *event;
+ event->area.x += paned->handle_xpos;
+ event->area.y += paned->handle_ypos;
+ gtk_widget_draw (widget, &event->area);
+ }
+ else
+ {
+ child_event = *event;
+ if (paned->child1 &&
+ GTK_WIDGET_NO_WINDOW (paned->child1) &&
+ gtk_widget_intersect (paned->child1, &event->area, &child_event.area))
+ gtk_widget_event (paned->child1, (GdkEvent *) &child_event);
+
+ if (paned->child2 &&
+ GTK_WIDGET_NO_WINDOW (paned->child2) &&
+ gtk_widget_intersect (paned->child2, &event->area, &child_event.area))
+ gtk_widget_event (paned->child2, (GdkEvent *) &child_event);
+ }
+ }
+
+ return FALSE;
+}
+
+void
+e_paned_add1 (EPaned *paned,
+ GtkWidget *widget)
+{
+ e_paned_pack1 (paned, widget, FALSE, TRUE);
+}
+
+void
+e_paned_add2 (EPaned *paned,
+ GtkWidget *widget)
+{
+ e_paned_pack2 (paned, widget, TRUE, TRUE);
+}
+
+void
+e_paned_pack1 (EPaned *paned,
+ GtkWidget *child,
+ gboolean resize,
+ gboolean shrink)
+{
+ g_return_if_fail (paned != NULL);
+ g_return_if_fail (E_IS_PANED (paned));
+ g_return_if_fail (GTK_IS_WIDGET (child));
+
+ if (!paned->child1)
+ {
+ paned->child1 = child;
+ paned->child1_resize = resize;
+ paned->child1_shrink = shrink;
+
+ gtk_widget_set_parent (child, GTK_WIDGET (paned));
+
+ if (GTK_WIDGET_REALIZED (child->parent))
+ gtk_widget_realize (child);
+
+ if (GTK_WIDGET_VISIBLE (child->parent) && GTK_WIDGET_VISIBLE (child))
+ {
+ if (GTK_WIDGET_MAPPED (child->parent))
+ gtk_widget_map (child);
+
+ gtk_widget_queue_resize (child);
+ }
+ }
+}
+
+void
+e_paned_pack2 (EPaned *paned,
+ GtkWidget *child,
+ gboolean resize,
+ gboolean shrink)
+{
+ g_return_if_fail (paned != NULL);
+ g_return_if_fail (E_IS_PANED (paned));
+ g_return_if_fail (GTK_IS_WIDGET (child));
+
+ if (!paned->child2)
+ {
+ paned->child2 = child;
+ paned->child2_resize = resize;
+ paned->child2_shrink = shrink;
+
+ gtk_widget_set_parent (child, GTK_WIDGET (paned));
+
+ if (GTK_WIDGET_REALIZED (child->parent))
+ gtk_widget_realize (child);
+
+ if (GTK_WIDGET_VISIBLE (child->parent) && GTK_WIDGET_VISIBLE (child))
+ {
+ if (GTK_WIDGET_MAPPED (child->parent))
+ gtk_widget_map (child);
+
+ gtk_widget_queue_resize (child);
+ }
+ }
+}
+
+
+static void
+e_paned_add (GtkContainer *container,
+ GtkWidget *widget)
+{
+ EPaned *paned;
+
+ g_return_if_fail (container != NULL);
+ g_return_if_fail (E_IS_PANED (container));
+ g_return_if_fail (widget != NULL);
+
+ paned = E_PANED (container);
+
+ if (!paned->child1)
+ e_paned_add1 (E_PANED (container), widget);
+ else if (!paned->child2)
+ e_paned_add2 (E_PANED (container), widget);
+}
+
+static void
+e_paned_remove (GtkContainer *container,
+ GtkWidget *widget)
+{
+ EPaned *paned;
+ gboolean was_visible;
+
+ g_return_if_fail (container != NULL);
+ g_return_if_fail (E_IS_PANED (container));
+ g_return_if_fail (widget != NULL);
+
+ paned = E_PANED (container);
+ was_visible = GTK_WIDGET_VISIBLE (widget);
+
+ if (paned->child1 == widget)
+ {
+ gtk_widget_unparent (widget);
+
+ paned->child1 = NULL;
+
+ if (was_visible && GTK_WIDGET_VISIBLE (container))
+ gtk_widget_queue_resize (GTK_WIDGET (container));
+ }
+ else if (paned->child2 == widget)
+ {
+ gtk_widget_unparent (widget);
+
+ paned->child2 = NULL;
+
+ if (was_visible && GTK_WIDGET_VISIBLE (container))
+ gtk_widget_queue_resize (GTK_WIDGET (container));
+ }
+}
+
+static void
+e_paned_forall (GtkContainer *container,
+ gboolean include_internals,
+ GtkCallback callback,
+ gpointer callback_data)
+{
+ EPaned *paned;
+
+ g_return_if_fail (container != NULL);
+ g_return_if_fail (E_IS_PANED (container));
+ g_return_if_fail (callback != NULL);
+
+ paned = E_PANED (container);
+
+ if (paned->child1)
+ (*callback) (paned->child1, callback_data);
+ if (paned->child2)
+ (*callback) (paned->child2, callback_data);
+}
+
+gint
+e_paned_get_position (EPaned *paned)
+{
+ g_return_val_if_fail (paned != NULL, 0);
+ g_return_val_if_fail (E_IS_PANED (paned), 0);
+
+ return paned->child1_size;
+}
+
+void
+e_paned_set_position (EPaned *paned,
+ gint position)
+{
+ g_return_if_fail (paned != NULL);
+ g_return_if_fail (E_IS_PANED (paned));
+
+ if (position >= 0)
+ {
+ /* We don't clamp here - the assumption is that
+ * if the total allocation changes at the same time
+ * as the position, the position set is with reference
+ * to the new total size. If only the position changes,
+ * then clamping will occur in e_paned_compute_position()
+ */
+ paned->child1_size = position;
+ paned->position_set = TRUE;
+ }
+ else
+ {
+ paned->position_set = FALSE;
+ }
+
+ gtk_widget_queue_resize (GTK_WIDGET (paned));
+}
+
+void
+e_paned_set_handle_size (EPaned *paned,
+ guint16 size)
+{
+ g_return_if_fail (paned != NULL);
+ g_return_if_fail (E_IS_PANED (paned));
+
+ gtk_widget_queue_resize (GTK_WIDGET (paned));
+
+ paned->handle_size = size;
+}
+
+void
+e_paned_compute_position(EPaned *paned,
+ gint allocation,
+ gint child1_req,
+ gint child2_req)
+{
+ g_return_if_fail (paned != NULL);
+ g_return_if_fail (E_IS_PANED (paned));
+
+ paned->min_position = paned->child1_shrink ? 0 : child1_req;
+
+ paned->max_position = allocation;
+ if (!paned->child2_shrink)
+ paned->max_position = MAX (1, paned->max_position - child2_req);
+
+ if (!paned->position_set)
+ {
+ if (paned->child1_resize && !paned->child2_resize)
+ paned->child1_size = MAX (1, allocation - child2_req);
+ else if (!paned->child1_resize && paned->child2_resize)
+ paned->child1_size = child1_req;
+ else if (child1_req + child2_req != 0)
+ paned->child1_size = allocation * ((gdouble)child1_req / (child1_req + child2_req));
+ else
+ paned->child1_size = allocation * 0.5;
+ }
+ else
+ {
+ /* If the position was set before the initial allocation.
+ * (paned->last_allocation <= 0) just clamp it and leave it.
+ */
+ if (paned->last_allocation > 0)
+ {
+ if (paned->child1_resize && !paned->child2_resize)
+ paned->child1_size += allocation - paned->last_allocation;
+ else if (!(!paned->child1_resize && paned->child2_resize))
+ paned->child1_size = allocation * ((gdouble) paned->child1_size / (paned->last_allocation));
+ }
+ }
+
+ paned->child1_size = CLAMP (paned->child1_size,
+ paned->min_position,
+ paned->max_position);
+
+ paned->last_allocation = allocation;
+}