forked from AuroraMiddleware/gtk
41604dd844
Thu Jan 7 19:10:21 1999 Owen Taylor <otaylor@redhat.com> * gtk/gtkviewport.c (gtk_viewport_style_set): Fixes to drawing the background of the bin window so that clearing and redrawing of child widgets work properly. * gtk/gtkwidget.c (gtk_widget_idle_draw): Juggle around data so that if somebody triggers more redraw queuing from a expose_event handler, it doesn't confuse the heck out of GTK+. (But is highly liable to cause an infinite loop...)
842 lines
24 KiB
C
842 lines
24 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., 59 Temple Place - Suite 330,
|
|
* Boston, MA 02111-1307, USA.
|
|
*/
|
|
#include "gtksignal.h"
|
|
#include "gtkviewport.h"
|
|
|
|
enum {
|
|
ARG_0,
|
|
ARG_HADJUSTMENT,
|
|
ARG_VADJUSTMENT,
|
|
ARG_SHADOW_TYPE
|
|
};
|
|
|
|
|
|
static void gtk_viewport_class_init (GtkViewportClass *klass);
|
|
static void gtk_viewport_init (GtkViewport *viewport);
|
|
static void gtk_viewport_destroy (GtkObject *object);
|
|
static void gtk_viewport_finalize (GtkObject *object);
|
|
static void gtk_viewport_set_arg (GtkObject *object,
|
|
GtkArg *arg,
|
|
guint arg_id);
|
|
static void gtk_viewport_get_arg (GtkObject *object,
|
|
GtkArg *arg,
|
|
guint arg_id);
|
|
static void gtk_viewport_set_scroll_adjustments (GtkViewport *viewport,
|
|
GtkAdjustment *hadjustment,
|
|
GtkAdjustment *vadjustment);
|
|
static void gtk_viewport_map (GtkWidget *widget);
|
|
static void gtk_viewport_unmap (GtkWidget *widget);
|
|
static void gtk_viewport_realize (GtkWidget *widget);
|
|
static void gtk_viewport_unrealize (GtkWidget *widget);
|
|
static void gtk_viewport_paint (GtkWidget *widget,
|
|
GdkRectangle *area);
|
|
static void gtk_viewport_draw (GtkWidget *widget,
|
|
GdkRectangle *area);
|
|
static gint gtk_viewport_expose (GtkWidget *widget,
|
|
GdkEventExpose *event);
|
|
static void gtk_viewport_add (GtkContainer *container,
|
|
GtkWidget *widget);
|
|
static void gtk_viewport_size_request (GtkWidget *widget,
|
|
GtkRequisition *requisition);
|
|
static void gtk_viewport_size_allocate (GtkWidget *widget,
|
|
GtkAllocation *allocation);
|
|
static void gtk_viewport_adjustment_changed (GtkAdjustment *adjustment,
|
|
gpointer data);
|
|
static void gtk_viewport_adjustment_value_changed (GtkAdjustment *adjustment,
|
|
gpointer data);
|
|
static void gtk_viewport_style_set (GtkWidget *widget,
|
|
GtkStyle *previous_style);
|
|
|
|
static GtkBinClass *parent_class;
|
|
|
|
GtkType
|
|
gtk_viewport_get_type (void)
|
|
{
|
|
static GtkType viewport_type = 0;
|
|
|
|
if (!viewport_type)
|
|
{
|
|
static const GtkTypeInfo viewport_info =
|
|
{
|
|
"GtkViewport",
|
|
sizeof (GtkViewport),
|
|
sizeof (GtkViewportClass),
|
|
(GtkClassInitFunc) gtk_viewport_class_init,
|
|
(GtkObjectInitFunc) gtk_viewport_init,
|
|
/* reserved_1 */ NULL,
|
|
/* reserved_2 */ NULL,
|
|
(GtkClassInitFunc) NULL,
|
|
};
|
|
|
|
viewport_type = gtk_type_unique (GTK_TYPE_BIN, &viewport_info);
|
|
}
|
|
|
|
return viewport_type;
|
|
}
|
|
|
|
static void
|
|
gtk_viewport_class_init (GtkViewportClass *class)
|
|
{
|
|
GtkObjectClass *object_class;
|
|
GtkWidgetClass *widget_class;
|
|
GtkContainerClass *container_class;
|
|
|
|
object_class = (GtkObjectClass*) class;
|
|
widget_class = (GtkWidgetClass*) class;
|
|
container_class = (GtkContainerClass*) class;
|
|
parent_class = (GtkBinClass*) gtk_type_class (GTK_TYPE_BIN);
|
|
|
|
gtk_object_add_arg_type ("GtkViewport::hadjustment",
|
|
GTK_TYPE_ADJUSTMENT,
|
|
GTK_ARG_READWRITE | GTK_ARG_CONSTRUCT,
|
|
ARG_HADJUSTMENT);
|
|
gtk_object_add_arg_type ("GtkViewport::vadjustment",
|
|
GTK_TYPE_ADJUSTMENT,
|
|
GTK_ARG_READWRITE | GTK_ARG_CONSTRUCT,
|
|
ARG_VADJUSTMENT);
|
|
gtk_object_add_arg_type ("GtkViewport::shadow_type",
|
|
GTK_TYPE_SHADOW_TYPE,
|
|
GTK_ARG_READWRITE,
|
|
ARG_SHADOW_TYPE);
|
|
|
|
object_class->set_arg = gtk_viewport_set_arg;
|
|
object_class->get_arg = gtk_viewport_get_arg;
|
|
object_class->destroy = gtk_viewport_destroy;
|
|
object_class->finalize = gtk_viewport_finalize;
|
|
|
|
widget_class->map = gtk_viewport_map;
|
|
widget_class->unmap = gtk_viewport_unmap;
|
|
widget_class->realize = gtk_viewport_realize;
|
|
widget_class->unrealize = gtk_viewport_unrealize;
|
|
widget_class->draw = gtk_viewport_draw;
|
|
widget_class->expose_event = gtk_viewport_expose;
|
|
widget_class->size_request = gtk_viewport_size_request;
|
|
widget_class->size_allocate = gtk_viewport_size_allocate;
|
|
widget_class->style_set = gtk_viewport_style_set;
|
|
|
|
widget_class->set_scroll_adjustments_signal =
|
|
gtk_signal_new ("set_scroll_adjustments",
|
|
GTK_RUN_LAST,
|
|
object_class->type,
|
|
GTK_SIGNAL_OFFSET (GtkViewportClass, set_scroll_adjustments),
|
|
gtk_marshal_NONE__POINTER_POINTER,
|
|
GTK_TYPE_NONE, 2, GTK_TYPE_ADJUSTMENT, GTK_TYPE_ADJUSTMENT);
|
|
|
|
container_class->add = gtk_viewport_add;
|
|
|
|
class->set_scroll_adjustments = gtk_viewport_set_scroll_adjustments;
|
|
}
|
|
|
|
static void
|
|
gtk_viewport_set_arg (GtkObject *object,
|
|
GtkArg *arg,
|
|
guint arg_id)
|
|
{
|
|
GtkViewport *viewport;
|
|
|
|
viewport = GTK_VIEWPORT (object);
|
|
|
|
switch (arg_id)
|
|
{
|
|
case ARG_HADJUSTMENT:
|
|
gtk_viewport_set_hadjustment (viewport, GTK_VALUE_POINTER (*arg));
|
|
break;
|
|
case ARG_VADJUSTMENT:
|
|
gtk_viewport_set_vadjustment (viewport, GTK_VALUE_POINTER (*arg));
|
|
break;
|
|
case ARG_SHADOW_TYPE:
|
|
gtk_viewport_set_shadow_type (viewport, GTK_VALUE_ENUM (*arg));
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void
|
|
gtk_viewport_get_arg (GtkObject *object,
|
|
GtkArg *arg,
|
|
guint arg_id)
|
|
{
|
|
GtkViewport *viewport;
|
|
|
|
viewport = GTK_VIEWPORT (object);
|
|
|
|
switch (arg_id)
|
|
{
|
|
case ARG_HADJUSTMENT:
|
|
GTK_VALUE_POINTER (*arg) = viewport->hadjustment;
|
|
break;
|
|
case ARG_VADJUSTMENT:
|
|
GTK_VALUE_POINTER (*arg) = viewport->vadjustment;
|
|
break;
|
|
case ARG_SHADOW_TYPE:
|
|
GTK_VALUE_ENUM (*arg) = viewport->shadow_type;
|
|
break;
|
|
default:
|
|
arg->type = GTK_TYPE_INVALID;
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void
|
|
gtk_viewport_init (GtkViewport *viewport)
|
|
{
|
|
GTK_WIDGET_UNSET_FLAGS (viewport, GTK_NO_WINDOW);
|
|
|
|
gtk_container_set_resize_mode (GTK_CONTAINER (viewport), GTK_RESIZE_QUEUE);
|
|
|
|
viewport->shadow_type = GTK_SHADOW_IN;
|
|
viewport->view_window = NULL;
|
|
viewport->bin_window = NULL;
|
|
viewport->hadjustment = NULL;
|
|
viewport->vadjustment = NULL;
|
|
}
|
|
|
|
GtkWidget*
|
|
gtk_viewport_new (GtkAdjustment *hadjustment,
|
|
GtkAdjustment *vadjustment)
|
|
{
|
|
GtkWidget *viewport;
|
|
|
|
viewport = gtk_widget_new (GTK_TYPE_VIEWPORT,
|
|
"hadjustment", hadjustment,
|
|
"vadjustment", vadjustment,
|
|
NULL);
|
|
|
|
return viewport;
|
|
}
|
|
|
|
static void
|
|
gtk_viewport_destroy (GtkObject *object)
|
|
{
|
|
GtkViewport *viewport = GTK_VIEWPORT (object);
|
|
|
|
if (viewport->hadjustment)
|
|
gtk_signal_disconnect_by_data (GTK_OBJECT (viewport->hadjustment),
|
|
viewport);
|
|
if (viewport->vadjustment)
|
|
gtk_signal_disconnect_by_data (GTK_OBJECT (viewport->vadjustment),
|
|
viewport);
|
|
|
|
GTK_OBJECT_CLASS(parent_class)->destroy (object);
|
|
}
|
|
|
|
static void
|
|
gtk_viewport_finalize (GtkObject *object)
|
|
{
|
|
GtkViewport *viewport = GTK_VIEWPORT (object);
|
|
|
|
gtk_object_unref (GTK_OBJECT (viewport->hadjustment));
|
|
gtk_object_unref (GTK_OBJECT (viewport->vadjustment));
|
|
|
|
GTK_OBJECT_CLASS(parent_class)->finalize (object);
|
|
}
|
|
|
|
GtkAdjustment*
|
|
gtk_viewport_get_hadjustment (GtkViewport *viewport)
|
|
{
|
|
g_return_val_if_fail (viewport != NULL, NULL);
|
|
g_return_val_if_fail (GTK_IS_VIEWPORT (viewport), NULL);
|
|
|
|
return viewport->hadjustment;
|
|
}
|
|
|
|
GtkAdjustment*
|
|
gtk_viewport_get_vadjustment (GtkViewport *viewport)
|
|
{
|
|
g_return_val_if_fail (viewport != NULL, NULL);
|
|
g_return_val_if_fail (GTK_IS_VIEWPORT (viewport), NULL);
|
|
|
|
return viewport->vadjustment;
|
|
}
|
|
|
|
void
|
|
gtk_viewport_set_hadjustment (GtkViewport *viewport,
|
|
GtkAdjustment *adjustment)
|
|
{
|
|
g_return_if_fail (viewport != NULL);
|
|
g_return_if_fail (GTK_IS_VIEWPORT (viewport));
|
|
if (adjustment)
|
|
g_return_if_fail (GTK_IS_ADJUSTMENT (adjustment));
|
|
|
|
if (viewport->hadjustment && viewport->hadjustment != adjustment)
|
|
{
|
|
gtk_signal_disconnect_by_data (GTK_OBJECT (viewport->hadjustment),
|
|
(gpointer) viewport);
|
|
gtk_object_unref (GTK_OBJECT (viewport->hadjustment));
|
|
}
|
|
|
|
if (!adjustment)
|
|
adjustment = GTK_ADJUSTMENT (gtk_adjustment_new (0.0, 0.0, 0.0,
|
|
0.0, 0.0, 0.0));
|
|
|
|
if (viewport->hadjustment != adjustment)
|
|
{
|
|
viewport->hadjustment = adjustment;
|
|
gtk_object_ref (GTK_OBJECT (viewport->hadjustment));
|
|
gtk_object_sink (GTK_OBJECT (viewport->hadjustment));
|
|
|
|
gtk_signal_connect (GTK_OBJECT (adjustment), "changed",
|
|
(GtkSignalFunc) gtk_viewport_adjustment_changed,
|
|
(gpointer) viewport);
|
|
gtk_signal_connect (GTK_OBJECT (adjustment), "value_changed",
|
|
(GtkSignalFunc) gtk_viewport_adjustment_value_changed,
|
|
(gpointer) viewport);
|
|
|
|
gtk_viewport_adjustment_changed (adjustment, viewport);
|
|
}
|
|
}
|
|
|
|
void
|
|
gtk_viewport_set_vadjustment (GtkViewport *viewport,
|
|
GtkAdjustment *adjustment)
|
|
{
|
|
g_return_if_fail (viewport != NULL);
|
|
g_return_if_fail (GTK_IS_VIEWPORT (viewport));
|
|
if (adjustment)
|
|
g_return_if_fail (GTK_IS_ADJUSTMENT (adjustment));
|
|
|
|
if (viewport->vadjustment && viewport->vadjustment != adjustment)
|
|
{
|
|
gtk_signal_disconnect_by_data (GTK_OBJECT (viewport->vadjustment),
|
|
(gpointer) viewport);
|
|
gtk_object_unref (GTK_OBJECT (viewport->vadjustment));
|
|
}
|
|
|
|
if (!adjustment)
|
|
adjustment = GTK_ADJUSTMENT (gtk_adjustment_new (0.0, 0.0, 0.0,
|
|
0.0, 0.0, 0.0));
|
|
|
|
if (viewport->vadjustment != adjustment)
|
|
{
|
|
viewport->vadjustment = adjustment;
|
|
gtk_object_ref (GTK_OBJECT (viewport->vadjustment));
|
|
gtk_object_sink (GTK_OBJECT (viewport->vadjustment));
|
|
|
|
gtk_signal_connect (GTK_OBJECT (adjustment), "changed",
|
|
(GtkSignalFunc) gtk_viewport_adjustment_changed,
|
|
(gpointer) viewport);
|
|
gtk_signal_connect (GTK_OBJECT (adjustment), "value_changed",
|
|
(GtkSignalFunc) gtk_viewport_adjustment_value_changed,
|
|
(gpointer) viewport);
|
|
|
|
gtk_viewport_adjustment_changed (adjustment, viewport);
|
|
}
|
|
}
|
|
|
|
static void
|
|
gtk_viewport_set_scroll_adjustments (GtkViewport *viewport,
|
|
GtkAdjustment *hadjustment,
|
|
GtkAdjustment *vadjustment)
|
|
{
|
|
if (viewport->hadjustment != hadjustment)
|
|
gtk_viewport_set_hadjustment (viewport, hadjustment);
|
|
if (viewport->vadjustment != vadjustment)
|
|
gtk_viewport_set_vadjustment (viewport, vadjustment);
|
|
}
|
|
|
|
void
|
|
gtk_viewport_set_shadow_type (GtkViewport *viewport,
|
|
GtkShadowType type)
|
|
{
|
|
g_return_if_fail (viewport != NULL);
|
|
g_return_if_fail (GTK_IS_VIEWPORT (viewport));
|
|
|
|
if ((GtkShadowType) viewport->shadow_type != type)
|
|
{
|
|
viewport->shadow_type = type;
|
|
|
|
if (GTK_WIDGET_VISIBLE (viewport))
|
|
{
|
|
gtk_widget_size_allocate (GTK_WIDGET (viewport), &(GTK_WIDGET (viewport)->allocation));
|
|
gtk_widget_queue_draw (GTK_WIDGET (viewport));
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
static void
|
|
gtk_viewport_map (GtkWidget *widget)
|
|
{
|
|
GtkBin *bin;
|
|
|
|
g_return_if_fail (widget != NULL);
|
|
g_return_if_fail (GTK_IS_VIEWPORT (widget));
|
|
|
|
GTK_WIDGET_SET_FLAGS (widget, GTK_MAPPED);
|
|
bin = GTK_BIN (widget);
|
|
|
|
gdk_window_show (widget->window);
|
|
|
|
if (bin->child &&
|
|
GTK_WIDGET_VISIBLE (bin->child) &&
|
|
!GTK_WIDGET_MAPPED (bin->child))
|
|
gtk_widget_map (bin->child);
|
|
}
|
|
|
|
static void
|
|
gtk_viewport_unmap (GtkWidget *widget)
|
|
{
|
|
g_return_if_fail (widget != NULL);
|
|
g_return_if_fail (GTK_IS_VIEWPORT (widget));
|
|
|
|
GTK_WIDGET_UNSET_FLAGS (widget, GTK_MAPPED);
|
|
|
|
gdk_window_hide (widget->window);
|
|
}
|
|
|
|
static void
|
|
gtk_viewport_realize (GtkWidget *widget)
|
|
{
|
|
GtkBin *bin;
|
|
GtkViewport *viewport;
|
|
GdkWindowAttr attributes;
|
|
gint attributes_mask;
|
|
gint event_mask;
|
|
gint border_width;
|
|
|
|
g_return_if_fail (widget != NULL);
|
|
g_return_if_fail (GTK_IS_VIEWPORT (widget));
|
|
|
|
border_width = GTK_CONTAINER (widget)->border_width;
|
|
|
|
bin = GTK_BIN (widget);
|
|
viewport = GTK_VIEWPORT (widget);
|
|
GTK_WIDGET_SET_FLAGS (widget, GTK_REALIZED);
|
|
|
|
attributes.x = widget->allocation.x + border_width;
|
|
attributes.y = widget->allocation.y + border_width;
|
|
attributes.width = widget->allocation.width - border_width * 2;
|
|
attributes.height = widget->allocation.height - border_width * 2;
|
|
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);
|
|
|
|
event_mask = gtk_widget_get_events (widget) | GDK_EXPOSURE_MASK;
|
|
attributes.event_mask = event_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, viewport);
|
|
|
|
if (viewport->shadow_type != GTK_SHADOW_NONE)
|
|
{
|
|
attributes.x = widget->style->klass->xthickness;
|
|
attributes.y = widget->style->klass->ythickness;
|
|
}
|
|
else
|
|
{
|
|
attributes.x = 0;
|
|
attributes.y = 0;
|
|
}
|
|
|
|
attributes.width = MAX (1, widget->allocation.width - attributes.x * 2 - border_width * 2);
|
|
attributes.height = MAX (1, widget->allocation.height - attributes.y * 2 - border_width * 2);
|
|
attributes.event_mask = 0;
|
|
|
|
viewport->view_window = gdk_window_new (widget->window, &attributes, attributes_mask);
|
|
gdk_window_set_user_data (viewport->view_window, viewport);
|
|
|
|
attributes.x = 0;
|
|
attributes.y = 0;
|
|
|
|
if (bin->child)
|
|
{
|
|
attributes.width = viewport->hadjustment->upper;
|
|
attributes.height = viewport->vadjustment->upper;
|
|
}
|
|
|
|
attributes.event_mask = event_mask;
|
|
|
|
viewport->bin_window = gdk_window_new (viewport->view_window, &attributes, attributes_mask);
|
|
gdk_window_set_user_data (viewport->bin_window, viewport);
|
|
|
|
if (bin->child)
|
|
gtk_widget_set_parent_window (bin->child, viewport->bin_window);
|
|
|
|
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, viewport->bin_window, GTK_STATE_NORMAL);
|
|
|
|
gtk_paint_flat_box(widget->style, viewport->bin_window, GTK_STATE_NORMAL,
|
|
GTK_SHADOW_NONE,
|
|
NULL, widget, "viewportbin",
|
|
0, 0, -1, -1);
|
|
|
|
gdk_window_show (viewport->bin_window);
|
|
gdk_window_show (viewport->view_window);
|
|
}
|
|
|
|
static void
|
|
gtk_viewport_unrealize (GtkWidget *widget)
|
|
{
|
|
GtkViewport *viewport;
|
|
|
|
g_return_if_fail (widget != NULL);
|
|
g_return_if_fail (GTK_IS_VIEWPORT (widget));
|
|
|
|
viewport = GTK_VIEWPORT (widget);
|
|
|
|
gdk_window_set_user_data (viewport->view_window, NULL);
|
|
gdk_window_destroy (viewport->view_window);
|
|
viewport->view_window = NULL;
|
|
|
|
gdk_window_set_user_data (viewport->bin_window, NULL);
|
|
gdk_window_destroy (viewport->bin_window);
|
|
viewport->bin_window = NULL;
|
|
|
|
if (GTK_WIDGET_CLASS (parent_class)->unrealize)
|
|
(* GTK_WIDGET_CLASS (parent_class)->unrealize) (widget);
|
|
}
|
|
|
|
static void
|
|
gtk_viewport_paint (GtkWidget *widget,
|
|
GdkRectangle *area)
|
|
{
|
|
GtkViewport *viewport;
|
|
|
|
g_return_if_fail (widget != NULL);
|
|
g_return_if_fail (GTK_IS_VIEWPORT (widget));
|
|
g_return_if_fail (area != NULL);
|
|
|
|
if (GTK_WIDGET_DRAWABLE (widget))
|
|
{
|
|
viewport = GTK_VIEWPORT (widget);
|
|
|
|
gtk_draw_shadow (widget->style, widget->window,
|
|
GTK_STATE_NORMAL, viewport->shadow_type,
|
|
0, 0, -1, -1);
|
|
}
|
|
}
|
|
|
|
static void
|
|
gtk_viewport_draw (GtkWidget *widget,
|
|
GdkRectangle *area)
|
|
{
|
|
GtkViewport *viewport;
|
|
GtkBin *bin;
|
|
GdkRectangle tmp_area;
|
|
GdkRectangle child_area;
|
|
gint border_width;
|
|
|
|
g_return_if_fail (widget != NULL);
|
|
g_return_if_fail (GTK_IS_VIEWPORT (widget));
|
|
g_return_if_fail (area != NULL);
|
|
|
|
if (GTK_WIDGET_DRAWABLE (widget))
|
|
{
|
|
viewport = GTK_VIEWPORT (widget);
|
|
bin = GTK_BIN (widget);
|
|
|
|
border_width = GTK_CONTAINER (widget)->border_width;
|
|
|
|
tmp_area = *area;
|
|
tmp_area.x -= border_width;
|
|
tmp_area.y -= border_width;
|
|
|
|
gtk_viewport_paint (widget, &tmp_area);
|
|
|
|
tmp_area.x += viewport->hadjustment->value - widget->style->klass->xthickness;
|
|
tmp_area.y += viewport->vadjustment->value - widget->style->klass->ythickness;
|
|
|
|
gtk_paint_flat_box(widget->style, viewport->bin_window,
|
|
GTK_STATE_NORMAL, GTK_SHADOW_NONE,
|
|
&tmp_area, widget, "viewportbin",
|
|
0, 0, -1, -1);
|
|
|
|
if (bin->child)
|
|
{
|
|
if (gtk_widget_intersect (bin->child, &tmp_area, &child_area))
|
|
gtk_widget_draw (bin->child, &child_area);
|
|
}
|
|
}
|
|
}
|
|
|
|
static gint
|
|
gtk_viewport_expose (GtkWidget *widget,
|
|
GdkEventExpose *event)
|
|
{
|
|
GtkViewport *viewport;
|
|
GtkBin *bin;
|
|
GdkEventExpose child_event;
|
|
|
|
g_return_val_if_fail (widget != NULL, FALSE);
|
|
g_return_val_if_fail (GTK_IS_VIEWPORT (widget), FALSE);
|
|
g_return_val_if_fail (event != NULL, FALSE);
|
|
|
|
if (GTK_WIDGET_DRAWABLE (widget))
|
|
{
|
|
viewport = GTK_VIEWPORT (widget);
|
|
bin = GTK_BIN (widget);
|
|
|
|
if (event->window == widget->window)
|
|
gtk_viewport_paint (widget, &event->area);
|
|
else if (event->window == viewport->bin_window)
|
|
{
|
|
child_event = *event;
|
|
|
|
gtk_paint_flat_box(widget->style, viewport->bin_window,
|
|
GTK_STATE_NORMAL, GTK_SHADOW_NONE,
|
|
&event->area, widget, "viewportbin",
|
|
0, 0, -1, -1);
|
|
|
|
if ((bin->child != NULL) &&
|
|
GTK_WIDGET_NO_WINDOW (bin->child) &&
|
|
gtk_widget_intersect (bin->child, &event->area, &child_event.area))
|
|
gtk_widget_event (bin->child, (GdkEvent*) &child_event);
|
|
}
|
|
|
|
|
|
}
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
static void
|
|
gtk_viewport_add (GtkContainer *container,
|
|
GtkWidget *child)
|
|
{
|
|
GtkBin *bin;
|
|
|
|
g_return_if_fail (container != NULL);
|
|
g_return_if_fail (GTK_IS_VIEWPORT (container));
|
|
g_return_if_fail (child != NULL);
|
|
|
|
bin = GTK_BIN (container);
|
|
g_return_if_fail (bin->child == NULL);
|
|
|
|
gtk_widget_set_parent_window (child, GTK_VIEWPORT (bin)->bin_window);
|
|
|
|
GTK_CONTAINER_CLASS (parent_class)->add (container, child);
|
|
}
|
|
|
|
static void
|
|
gtk_viewport_size_request (GtkWidget *widget,
|
|
GtkRequisition *requisition)
|
|
{
|
|
GtkViewport *viewport;
|
|
GtkBin *bin;
|
|
|
|
g_return_if_fail (widget != NULL);
|
|
g_return_if_fail (GTK_IS_VIEWPORT (widget));
|
|
g_return_if_fail (requisition != NULL);
|
|
|
|
viewport = GTK_VIEWPORT (widget);
|
|
bin = GTK_BIN (widget);
|
|
|
|
requisition->width = (GTK_CONTAINER (widget)->border_width +
|
|
GTK_WIDGET (widget)->style->klass->xthickness) * 2 + 5;
|
|
|
|
requisition->height = (GTK_CONTAINER (widget)->border_width * 2 +
|
|
GTK_WIDGET (widget)->style->klass->ythickness) * 2 + 5;
|
|
|
|
if (bin->child && GTK_WIDGET_VISIBLE (bin->child))
|
|
{
|
|
gtk_widget_size_request (bin->child, &bin->child->requisition);
|
|
requisition->width += bin->child->requisition.width;
|
|
requisition->height += bin->child->requisition.height;
|
|
}
|
|
}
|
|
|
|
static void
|
|
gtk_viewport_size_allocate (GtkWidget *widget,
|
|
GtkAllocation *allocation)
|
|
{
|
|
GtkViewport *viewport;
|
|
GtkBin *bin;
|
|
GtkAllocation child_allocation;
|
|
gint hval, vval;
|
|
gint border_width;
|
|
|
|
g_return_if_fail (widget != NULL);
|
|
g_return_if_fail (GTK_IS_VIEWPORT (widget));
|
|
g_return_if_fail (allocation != NULL);
|
|
|
|
widget->allocation = *allocation;
|
|
viewport = GTK_VIEWPORT (widget);
|
|
bin = GTK_BIN (widget);
|
|
|
|
border_width = GTK_CONTAINER (widget)->border_width;
|
|
|
|
child_allocation.x = 0;
|
|
child_allocation.y = 0;
|
|
|
|
if (viewport->shadow_type != GTK_SHADOW_NONE)
|
|
{
|
|
child_allocation.x = GTK_WIDGET (viewport)->style->klass->xthickness;
|
|
child_allocation.y = GTK_WIDGET (viewport)->style->klass->ythickness;
|
|
}
|
|
|
|
child_allocation.width = MAX (1, allocation->width - child_allocation.x * 2 - border_width * 2);
|
|
child_allocation.height = MAX (1, allocation->height - child_allocation.y * 2 - border_width * 2);
|
|
|
|
if (GTK_WIDGET_REALIZED (widget))
|
|
{
|
|
gdk_window_move_resize (widget->window,
|
|
allocation->x + border_width,
|
|
allocation->y + border_width,
|
|
allocation->width - border_width * 2,
|
|
allocation->height - border_width * 2);
|
|
|
|
gdk_window_move_resize (viewport->view_window,
|
|
child_allocation.x,
|
|
child_allocation.y,
|
|
child_allocation.width,
|
|
child_allocation.height);
|
|
}
|
|
|
|
viewport->hadjustment->page_size = child_allocation.width;
|
|
viewport->hadjustment->page_increment = viewport->hadjustment->page_size / 2;
|
|
viewport->hadjustment->step_increment = 10;
|
|
|
|
viewport->vadjustment->page_size = child_allocation.height;
|
|
viewport->vadjustment->page_increment = viewport->vadjustment->page_size / 2;
|
|
viewport->vadjustment->step_increment = 10;
|
|
|
|
hval = viewport->hadjustment->value;
|
|
vval = viewport->vadjustment->value;
|
|
|
|
if (bin->child && GTK_WIDGET_VISIBLE (bin->child))
|
|
{
|
|
viewport->hadjustment->lower = 0;
|
|
viewport->hadjustment->upper = MAX (bin->child->requisition.width,
|
|
child_allocation.width);
|
|
|
|
hval = CLAMP (hval, 0,
|
|
viewport->hadjustment->upper -
|
|
viewport->hadjustment->page_size);
|
|
|
|
viewport->vadjustment->lower = 0;
|
|
viewport->vadjustment->upper = MAX (bin->child->requisition.height,
|
|
child_allocation.height);
|
|
|
|
vval = CLAMP (vval, 0,
|
|
viewport->vadjustment->upper -
|
|
viewport->vadjustment->page_size);
|
|
}
|
|
|
|
if (bin->child && GTK_WIDGET_VISIBLE (bin->child))
|
|
{
|
|
child_allocation.x = 0;
|
|
child_allocation.y = 0;
|
|
|
|
child_allocation.width = viewport->hadjustment->upper;
|
|
child_allocation.height = viewport->vadjustment->upper;
|
|
|
|
if (!GTK_WIDGET_REALIZED (widget))
|
|
gtk_widget_realize (widget);
|
|
|
|
gdk_window_resize (viewport->bin_window,
|
|
child_allocation.width,
|
|
child_allocation.height);
|
|
|
|
child_allocation.x = 0;
|
|
child_allocation.y = 0;
|
|
gtk_widget_size_allocate (bin->child, &child_allocation);
|
|
}
|
|
|
|
gtk_signal_emit_by_name (GTK_OBJECT (viewport->hadjustment), "changed");
|
|
gtk_signal_emit_by_name (GTK_OBJECT (viewport->vadjustment), "changed");
|
|
if (viewport->hadjustment->value != hval)
|
|
{
|
|
viewport->hadjustment->value = hval;
|
|
gtk_signal_emit_by_name (GTK_OBJECT (viewport->hadjustment), "value_changed");
|
|
}
|
|
if (viewport->vadjustment->value != vval)
|
|
{
|
|
viewport->vadjustment->value = vval;
|
|
gtk_signal_emit_by_name (GTK_OBJECT (viewport->vadjustment), "value_changed");
|
|
}
|
|
}
|
|
|
|
static void
|
|
gtk_viewport_adjustment_changed (GtkAdjustment *adjustment,
|
|
gpointer data)
|
|
{
|
|
GtkViewport *viewport;
|
|
|
|
g_return_if_fail (adjustment != NULL);
|
|
g_return_if_fail (data != NULL);
|
|
g_return_if_fail (GTK_IS_VIEWPORT (data));
|
|
|
|
viewport = GTK_VIEWPORT (data);
|
|
}
|
|
|
|
static void
|
|
gtk_viewport_adjustment_value_changed (GtkAdjustment *adjustment,
|
|
gpointer data)
|
|
{
|
|
GtkViewport *viewport;
|
|
GtkBin *bin;
|
|
GtkAllocation child_allocation;
|
|
gint width, height;
|
|
|
|
g_return_if_fail (adjustment != NULL);
|
|
g_return_if_fail (data != NULL);
|
|
g_return_if_fail (GTK_IS_VIEWPORT (data));
|
|
|
|
viewport = GTK_VIEWPORT (data);
|
|
bin = GTK_BIN (data);
|
|
|
|
if (bin->child && GTK_WIDGET_VISIBLE (bin->child))
|
|
{
|
|
gdk_window_get_size (viewport->view_window, &width, &height);
|
|
|
|
child_allocation.x = 0;
|
|
child_allocation.y = 0;
|
|
|
|
if (viewport->hadjustment->lower != (viewport->hadjustment->upper -
|
|
viewport->hadjustment->page_size))
|
|
child_allocation.x = viewport->hadjustment->lower - viewport->hadjustment->value;
|
|
|
|
if (viewport->vadjustment->lower != (viewport->vadjustment->upper -
|
|
viewport->vadjustment->page_size))
|
|
child_allocation.y = viewport->vadjustment->lower - viewport->vadjustment->value;
|
|
|
|
if (GTK_WIDGET_REALIZED (viewport))
|
|
gdk_window_move (viewport->bin_window,
|
|
child_allocation.x,
|
|
child_allocation.y);
|
|
}
|
|
}
|
|
|
|
static void
|
|
gtk_viewport_style_set (GtkWidget *widget,
|
|
GtkStyle *previous_style)
|
|
{
|
|
GtkViewport *viewport;
|
|
|
|
if (GTK_WIDGET_REALIZED (widget) &&
|
|
!GTK_WIDGET_NO_WINDOW (widget))
|
|
{
|
|
viewport = GTK_VIEWPORT (widget);
|
|
|
|
gtk_style_set_background (widget->style, viewport->bin_window, GTK_STATE_NORMAL);
|
|
gtk_style_set_background (widget->style, widget->window, widget->state);
|
|
if (GTK_WIDGET_DRAWABLE (widget))
|
|
{
|
|
gdk_window_clear (widget->window);
|
|
gdk_window_clear (viewport->bin_window);
|
|
}
|
|
}
|
|
}
|