aboutsummaryrefslogtreecommitdiffstats
path: root/widgets/e-paned/e-vpaned.c
diff options
context:
space:
mode:
Diffstat (limited to 'widgets/e-paned/e-vpaned.c')
-rw-r--r--widgets/e-paned/e-vpaned.c403
1 files changed, 403 insertions, 0 deletions
diff --git a/widgets/e-paned/e-vpaned.c b/widgets/e-paned/e-vpaned.c
new file mode 100644
index 0000000000..9a71b9acd9
--- /dev/null
+++ b/widgets/e-paned/e-vpaned.c
@@ -0,0 +1,403 @@
+/* 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 1997-1999. 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-vpaned.h"
+
+static void e_vpaned_class_init (EVPanedClass *klass);
+static void e_vpaned_init (EVPaned *vpaned);
+static void e_vpaned_size_request (GtkWidget *widget,
+ GtkRequisition *requisition);
+static void e_vpaned_size_allocate (GtkWidget *widget,
+ GtkAllocation *allocation);
+static void e_vpaned_draw (GtkWidget *widget,
+ GdkRectangle *area);
+static void e_vpaned_xor_line (EPaned *paned);
+static gboolean e_vpaned_button_press (GtkWidget *widget,
+ GdkEventButton *event);
+static gboolean e_vpaned_button_release (GtkWidget *widget,
+ GdkEventButton *event);
+static gboolean e_vpaned_motion (GtkWidget *widget,
+ GdkEventMotion *event);
+
+GtkType
+e_vpaned_get_type (void)
+{
+ static GtkType vpaned_type = 0;
+
+ if (!vpaned_type)
+ {
+ static const GtkTypeInfo vpaned_info =
+ {
+ "EVPaned",
+ sizeof (EVPaned),
+ sizeof (EVPanedClass),
+ (GtkClassInitFunc) e_vpaned_class_init,
+ (GtkObjectInitFunc) e_vpaned_init,
+ /* reserved_1 */ NULL,
+ /* reserved_2 */ NULL,
+ (GtkClassInitFunc) NULL,
+ };
+
+ vpaned_type = gtk_type_unique (E_TYPE_PANED, &vpaned_info);
+ }
+
+ return vpaned_type;
+}
+
+static void
+e_vpaned_class_init (EVPanedClass *class)
+{
+ GtkWidgetClass *widget_class;
+
+ widget_class = (GtkWidgetClass *) class;
+
+ widget_class->size_request = e_vpaned_size_request;
+ widget_class->size_allocate = e_vpaned_size_allocate;
+ widget_class->draw = e_vpaned_draw;
+ widget_class->button_press_event = e_vpaned_button_press;
+ widget_class->button_release_event = e_vpaned_button_release;
+ widget_class->motion_notify_event = e_vpaned_motion;
+}
+
+static void
+e_vpaned_init (EVPaned *vpaned)
+{
+ EPaned *paned;
+
+ g_return_if_fail (vpaned != NULL);
+ g_return_if_fail (E_IS_PANED (vpaned));
+
+ paned = E_PANED (vpaned);
+
+ paned->cursor_type = GDK_SB_V_DOUBLE_ARROW;
+}
+
+GtkWidget *
+e_vpaned_new (void)
+{
+ EVPaned *vpaned;
+
+ vpaned = gtk_type_new (E_TYPE_VPANED);
+
+ return GTK_WIDGET (vpaned);
+}
+
+static void
+e_vpaned_size_request (GtkWidget *widget,
+ GtkRequisition *requisition)
+{
+ EPaned *paned;
+ GtkRequisition child_requisition;
+
+ g_return_if_fail (widget != NULL);
+ g_return_if_fail (E_IS_VPANED (widget));
+ g_return_if_fail (requisition != NULL);
+
+ paned = E_PANED (widget);
+ requisition->width = 0;
+ requisition->height = 0;
+
+ if (paned->child1 && GTK_WIDGET_VISIBLE (paned->child1))
+ {
+ gtk_widget_size_request (paned->child1, &child_requisition);
+
+ requisition->height = child_requisition.height;
+ requisition->width = child_requisition.width;
+ }
+
+ if (paned->child2 && GTK_WIDGET_VISIBLE (paned->child2))
+ {
+ gtk_widget_size_request (paned->child2, &child_requisition);
+
+ requisition->width = MAX (requisition->width, child_requisition.width);
+ requisition->height += child_requisition.height;
+ }
+
+ requisition->height += GTK_CONTAINER (paned)->border_width * 2 + paned->handle_size;
+ requisition->width += GTK_CONTAINER (paned)->border_width * 2;
+}
+
+static void
+e_vpaned_size_allocate (GtkWidget *widget,
+ GtkAllocation *allocation)
+{
+ EPaned *paned;
+ GtkRequisition child1_requisition;
+ GtkRequisition child2_requisition;
+ GtkAllocation child1_allocation;
+ GtkAllocation child2_allocation;
+ gint border_width;
+
+ g_return_if_fail (widget != NULL);
+ g_return_if_fail (E_IS_VPANED (widget));
+ g_return_if_fail (allocation != NULL);
+
+ widget->allocation = *allocation;
+ paned = E_PANED (widget);
+ border_width = GTK_CONTAINER (widget)->border_width;
+
+ if (paned->child1)
+ gtk_widget_get_child_requisition (paned->child1, &child1_requisition);
+ else
+ child1_requisition.height = 0;
+
+ if (paned->child2)
+ gtk_widget_get_child_requisition (paned->child2, &child2_requisition);
+ else
+ child2_requisition.height = 0;
+
+ e_paned_compute_position (paned,
+ MAX (1, (gint) widget->allocation.height
+ - (gint) paned->handle_size
+ - 2 * border_width),
+ child1_requisition.height,
+ child2_requisition.height);
+
+ /* Move the handle before the children so we don't get extra expose events */
+
+ paned->handle_xpos = border_width;
+ paned->handle_ypos = paned->child1_size + border_width;
+ paned->handle_width = MAX (1, (gint) widget->allocation.width - 2 * border_width);
+ paned->handle_height = paned->handle_size;
+
+ if (GTK_WIDGET_REALIZED(widget))
+ {
+ gdk_window_move_resize (widget->window,
+ allocation->x, allocation->y,
+ allocation->width,
+ allocation->height);
+
+ gdk_window_move_resize (paned->handle,
+ paned->handle_xpos,
+ paned->handle_ypos,
+ paned->handle_width,
+ paned->handle_size);
+ }
+
+ child1_allocation.width = child2_allocation.width = MAX (1, (gint) allocation->width - border_width * 2);
+ child1_allocation.height = paned->child1_size;
+ child1_allocation.x = child2_allocation.x = border_width;
+ child1_allocation.y = border_width;
+
+ child2_allocation.y = child1_allocation.y + child1_allocation.height + paned->handle_height;
+ child2_allocation.height = MAX(1, (gint) allocation->height - child2_allocation.y - border_width);
+
+ /* Now allocate the childen, making sure, when resizing not to
+ * overlap the windows */
+ if (GTK_WIDGET_MAPPED (widget) &&
+ paned->child1 && GTK_WIDGET_VISIBLE (paned->child1) &&
+ paned->child1->allocation.height < child1_allocation.height)
+ {
+ if (paned->child2 && GTK_WIDGET_VISIBLE (paned->child2))
+ gtk_widget_size_allocate(paned->child2, &child2_allocation);
+ gtk_widget_size_allocate(paned->child1, &child1_allocation);
+ }
+ else
+ {
+ if (paned->child1 && GTK_WIDGET_VISIBLE (paned->child1))
+ gtk_widget_size_allocate(paned->child1, &child1_allocation);
+ if (paned->child2 && GTK_WIDGET_VISIBLE (paned->child2))
+ gtk_widget_size_allocate(paned->child2, &child2_allocation);
+ }
+}
+
+static void
+e_vpaned_draw (GtkWidget *widget,
+ GdkRectangle *area)
+{
+ EPaned *paned;
+ GdkRectangle handle_area, child_area;
+ guint16 border_width;
+
+ g_return_if_fail (widget != NULL);
+ g_return_if_fail (E_IS_PANED (widget));
+
+ if (GTK_WIDGET_VISIBLE (widget) && GTK_WIDGET_MAPPED (widget))
+ {
+ paned = E_PANED (widget);
+ border_width = GTK_CONTAINER (paned)->border_width;
+
+ gdk_window_clear_area (widget->window,
+ area->x, area->y, area->width,
+ area->height);
+
+ handle_area.x = paned->handle_xpos;
+ handle_area.y = paned->handle_ypos;
+ handle_area.width = paned->handle_width;
+ handle_area.height = paned->handle_size;
+
+ if (gdk_rectangle_intersect (&handle_area, area, &child_area))
+ {
+ child_area.x -= paned->handle_xpos;
+ child_area.y -= paned->handle_ypos;
+
+ gtk_paint_handle (widget->style,
+ paned->handle,
+ GTK_STATE_NORMAL,
+ GTK_SHADOW_NONE,
+ &child_area,
+ widget,
+ "paned",
+ 0, 0, -1, -1,
+ GTK_ORIENTATION_HORIZONTAL);
+
+ }
+ /* Redraw the children
+ */
+ if (paned->child1 && gtk_widget_intersect (paned->child1, area, &child_area))
+ gtk_widget_draw (paned->child1, &child_area);
+ if (paned->child2 && gtk_widget_intersect (paned->child2, area, &child_area))
+ gtk_widget_draw (paned->child2, &child_area);
+ }
+}
+
+static void
+e_vpaned_xor_line (EPaned *paned)
+{
+ GtkWidget *widget;
+ GdkGCValues values;
+ guint16 ypos;
+
+ widget = GTK_WIDGET (paned);
+
+ if (!paned->xor_gc)
+ {
+ values.function = GDK_INVERT;
+ values.subwindow_mode = GDK_INCLUDE_INFERIORS;
+ paned->xor_gc = gdk_gc_new_with_values (widget->window,
+ &values,
+ GDK_GC_FUNCTION | GDK_GC_SUBWINDOW);
+ }
+
+ gdk_gc_set_line_attributes (paned->xor_gc, 2, GDK_LINE_SOLID,
+ GDK_CAP_NOT_LAST, GDK_JOIN_BEVEL);
+
+ ypos = paned->child1_size
+ + GTK_CONTAINER (paned)->border_width + paned->handle_size / 2;
+
+ gdk_draw_line (widget->window, paned->xor_gc,
+ 0,
+ ypos,
+ widget->allocation.width - 1,
+ ypos);
+}
+
+static gboolean
+e_vpaned_button_press (GtkWidget *widget,
+ GdkEventButton *event)
+{
+ EPaned *paned;
+
+ g_return_val_if_fail (widget != NULL, FALSE);
+ g_return_val_if_fail (E_IS_PANED (widget), FALSE);
+
+ paned = E_PANED (widget);
+
+ if (!paned->in_drag &&
+ (event->window == paned->handle) && (event->button == 1))
+ {
+ paned->in_drag = TRUE;
+ /* We need a server grab here, not gtk_grab_add(), since
+ * we don't want to pass events on to the widget's children */
+ gdk_pointer_grab (paned->handle, FALSE,
+ GDK_POINTER_MOTION_HINT_MASK
+ | GDK_BUTTON1_MOTION_MASK
+ | GDK_BUTTON_RELEASE_MASK, NULL, NULL,
+ event->time);
+ paned->child1_size += event->y - paned->handle_size / 2;
+ paned->child1_size = CLAMP (paned->child1_size, 0,
+ widget->allocation.height -
+ paned->handle_size -
+ 2 * GTK_CONTAINER (paned)->border_width);
+ e_vpaned_xor_line(paned);
+
+ return TRUE;
+ }
+
+ return FALSE;
+}
+
+static gboolean
+e_vpaned_button_release (GtkWidget *widget,
+ GdkEventButton *event)
+{
+ EPaned *paned;
+
+ g_return_val_if_fail (widget != NULL, FALSE);
+ g_return_val_if_fail (E_IS_PANED (widget), FALSE);
+
+ paned = E_PANED (widget);
+
+ if (paned->in_drag && (event->button == 1))
+ {
+ e_vpaned_xor_line (paned);
+ paned->in_drag = FALSE;
+ paned->position_set = TRUE;
+ gdk_pointer_ungrab (event->time);
+ gtk_widget_queue_resize (GTK_WIDGET (paned));
+
+ return TRUE;
+ }
+
+ return FALSE;
+}
+
+static gboolean
+e_vpaned_motion (GtkWidget *widget,
+ GdkEventMotion *event)
+{
+ EPaned *paned;
+ gint y;
+
+ g_return_val_if_fail (widget != NULL, FALSE);
+ g_return_val_if_fail (E_IS_PANED (widget), FALSE);
+
+ if (event->is_hint || event->window != widget->window)
+ gtk_widget_get_pointer (widget, NULL, &y);
+ else
+ y = event->y;
+
+ paned = E_PANED (widget);
+
+ if (paned->in_drag)
+ {
+ gint size = y - GTK_CONTAINER(paned)->border_width - paned->handle_size / 2;
+
+ e_vpaned_xor_line (paned);
+ paned->child1_size = CLAMP (size, paned->min_position, paned->max_position);
+ e_vpaned_xor_line(paned);
+ }
+
+ return TRUE;
+}