gtk2/gtk/gtkvpaned.c
1997-11-24 22:37:52 +00:00

357 lines
11 KiB
C

/* 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., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include "gtkvpaned.h"
#include "gtkmain.h"
#include "gtksignal.h"
static void gtk_vpaned_class_init (GtkVPanedClass *klass);
static void gtk_vpaned_init (GtkVPaned *vpaned);
static void gtk_vpaned_size_request (GtkWidget *widget,
GtkRequisition *requisition);
static void gtk_vpaned_size_allocate (GtkWidget *widget,
GtkAllocation *allocation);
static void gtk_vpaned_draw (GtkWidget *widget,
GdkRectangle *area);
static void gtk_vpaned_xor_line (GtkPaned *paned);
static gint gtk_vpaned_button_press (GtkWidget *widget,
GdkEventButton *event);
static gint gtk_vpaned_button_release (GtkWidget *widget,
GdkEventButton *event);
static gint gtk_vpaned_motion (GtkWidget *widget,
GdkEventMotion *event);
guint
gtk_vpaned_get_type ()
{
static guint vpaned_type = 0;
if (!vpaned_type)
{
GtkTypeInfo vpaned_info =
{
"GtkVPaned",
sizeof (GtkVPaned),
sizeof (GtkVPanedClass),
(GtkClassInitFunc) gtk_vpaned_class_init,
(GtkObjectInitFunc) gtk_vpaned_init,
(GtkArgFunc) NULL,
};
vpaned_type = gtk_type_unique (gtk_paned_get_type (), &vpaned_info);
}
return vpaned_type;
}
static void
gtk_vpaned_class_init (GtkVPanedClass *class)
{
GtkWidgetClass *widget_class;
widget_class = (GtkWidgetClass*) class;
widget_class->size_request = gtk_vpaned_size_request;
widget_class->size_allocate = gtk_vpaned_size_allocate;
widget_class->draw = gtk_vpaned_draw;
widget_class->button_press_event = gtk_vpaned_button_press;
widget_class->button_release_event = gtk_vpaned_button_release;
widget_class->motion_notify_event = gtk_vpaned_motion;
}
static void
gtk_vpaned_init (GtkVPaned *vpaned)
{
}
GtkWidget*
gtk_vpaned_new ()
{
GtkVPaned *vpaned;
vpaned = gtk_type_new (gtk_vpaned_get_type ());
return GTK_WIDGET (vpaned);
}
static void
gtk_vpaned_size_request (GtkWidget *widget,
GtkRequisition *requisition)
{
GtkPaned *paned;
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_VPANED (widget));
g_return_if_fail (requisition != NULL);
paned = GTK_PANED (widget);
requisition->width = 0;
requisition->height = 0;
if (paned->child1 && GTK_WIDGET_VISIBLE (paned->child1))
{
gtk_widget_size_request (paned->child1, &paned->child1->requisition);
requisition->height = paned->child1->requisition.height;
requisition->width = paned->child1->requisition.width;
}
if (paned->child2 && GTK_WIDGET_VISIBLE (paned->child2))
{
gtk_widget_size_request (paned->child2, &paned->child2->requisition);
requisition->width = MAX (requisition->width,
paned->child2->requisition.width);
requisition->height += paned->child2->requisition.height;
}
requisition->height += GTK_CONTAINER (paned)->border_width * 2 + paned->gutter_size;
requisition->width += GTK_CONTAINER (paned)->border_width * 2;
}
static void
gtk_vpaned_size_allocate (GtkWidget *widget,
GtkAllocation *allocation)
{
GtkPaned *paned;
GtkAllocation child1_allocation;
GtkAllocation child2_allocation;
guint16 border_width;
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_VPANED (widget));
g_return_if_fail (allocation != NULL);
widget->allocation = *allocation;
paned = GTK_PANED (widget);
border_width = GTK_CONTAINER (paned)->border_width;
if (!paned->position_set)
{
if (paned->child1 && GTK_WIDGET_VISIBLE (paned->child1))
paned->child1_size = paned->child1->requisition.height;
else
paned->child1_size = 0;
}
/* Move the handle first so we don't get extra expose events */
paned->handle_xpos = allocation->x + allocation->width - border_width - 2 * paned->handle_size;
paned->handle_ypos = allocation->y + paned->child1_size + border_width + paned->gutter_size / 2 - paned->handle_size / 2;
if (GTK_WIDGET_REALIZED (widget))
{
gdk_window_move (paned->handle, paned->handle_xpos, paned->handle_ypos);
gdk_window_raise (paned->handle);
}
if (GTK_WIDGET_MAPPED (widget))
{
gdk_window_clear_area (widget->window,
paned->groove_rectangle.x,
paned->groove_rectangle.y,
paned->groove_rectangle.width,
paned->groove_rectangle.height);
}
child1_allocation.width = child2_allocation.width = allocation->width - border_width * 2;
child1_allocation.height = paned->child1_size;
child1_allocation.x = child2_allocation.x = allocation->x + border_width;
child1_allocation.y = allocation->y + border_width;
paned->groove_rectangle.y = child1_allocation.y
+ child1_allocation.height + paned->gutter_size / 2 - 1;
paned->groove_rectangle.x = allocation->x;
paned->groove_rectangle.height = 2;
paned->groove_rectangle.width = allocation->width;
child2_allocation.y = paned->groove_rectangle.y + paned->gutter_size / 2 + 1;
child2_allocation.height = allocation->y + 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
gtk_vpaned_draw (GtkWidget *widget,
GdkRectangle *area)
{
GtkPaned *paned;
GdkRectangle child_area;
guint16 border_width;
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_PANED (widget));
if (GTK_WIDGET_VISIBLE (widget) && GTK_WIDGET_MAPPED (widget))
{
paned = GTK_PANED (widget);
border_width = GTK_CONTAINER (paned)->border_width;
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);
gdk_draw_line (widget->window,
widget->style->dark_gc[widget->state],
widget->allocation.x,
widget->allocation.y + border_width + paned->child1_size + paned->gutter_size / 2 - 1,
widget->allocation.x + widget->allocation.width - 1,
widget->allocation.y + border_width + paned->child1_size + paned->gutter_size / 2 - 1);
gdk_draw_line (widget->window,
widget->style->light_gc[widget->state],
widget->allocation.x,
widget->allocation.y + border_width + paned->child1_size + paned->gutter_size / 2,
widget->allocation.x + widget->allocation.width - 1,
widget->allocation.y + border_width + paned->child1_size + paned->gutter_size / 2);
}
}
static void
gtk_vpaned_xor_line (GtkPaned *paned)
{
GtkWidget *widget;
GdkGCValues values;
guint16 ypos;
widget = GTK_WIDGET(paned);
if (!paned->xor_gc)
{
values.foreground = widget->style->white;
values.function = GDK_XOR;
values.subwindow_mode = GDK_INCLUDE_INFERIORS;
paned->xor_gc = gdk_gc_new_with_values (widget->window,
&values,
GDK_GC_FOREGROUND |
GDK_GC_FUNCTION |
GDK_GC_SUBWINDOW);
}
ypos = widget->allocation.y + paned->child1_size
+ GTK_CONTAINER (paned)->border_width + paned->gutter_size / 2;
gdk_draw_line (widget->window, paned->xor_gc,
widget->allocation.x,
ypos,
widget->allocation.x + widget->allocation.width - 1,
ypos);
}
static gint
gtk_vpaned_button_press (GtkWidget *widget, GdkEventButton *event)
{
GtkPaned *paned;
g_return_val_if_fail (widget != NULL,FALSE);
g_return_val_if_fail (GTK_IS_PANED (widget),FALSE);
paned = GTK_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->gutter_size
- 2 * GTK_CONTAINER (paned)->border_width);
gtk_vpaned_xor_line (paned);
}
return TRUE;
}
static gint
gtk_vpaned_button_release (GtkWidget *widget, GdkEventButton *event)
{
GtkPaned *paned;
g_return_val_if_fail (widget != NULL, FALSE);
g_return_val_if_fail (GTK_IS_PANED (widget), FALSE);
paned = GTK_PANED (widget);
if (paned->in_drag && (event->button == 1))
{
gtk_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;
}
static gint
gtk_vpaned_motion (GtkWidget *widget, GdkEventMotion *event)
{
GtkPaned *paned;
gint y;
g_return_val_if_fail (widget != NULL, FALSE);
g_return_val_if_fail (GTK_IS_PANED (widget), FALSE);
if (event->is_hint || event->window != widget->window)
gtk_widget_get_pointer(widget, NULL, &y);
else
y = event->y;
paned = GTK_PANED (widget);
if (paned->in_drag)
{
gtk_vpaned_xor_line (paned);
paned->child1_size = y - GTK_CONTAINER (paned)->border_width -
paned->gutter_size/2;
paned->child1_size = CLAMP (paned->child1_size, 0,
widget->allocation.height - paned->gutter_size
- 2 * GTK_CONTAINER (paned)->border_width);
gtk_vpaned_xor_line (paned);
}
return TRUE;
}