* 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
+ * modify it under the terms of the GNU Lesser 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.
+ * Lesser 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.
+ * You should have received a copy of the GNU Lesser 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"
+/*
+ * 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/.
+ */
-static void gtk_viewport_class_init (GtkViewportClass *klass);
-static void gtk_viewport_init (GtkViewport *viewport);
-static void gtk_viewport_finalize (GtkObject *object);
-static void gtk_viewport_map (GtkWidget *widget);
-static void gtk_viewport_unmap (GtkWidget *widget);
+#include "config.h"
+#include "gtkviewport.h"
+#include "gtkintl.h"
+#include "gtkmarshalers.h"
+#include "gtkprivate.h"
+#include "gtkalias.h"
+
+enum {
+ PROP_0,
+ PROP_HADJUSTMENT,
+ PROP_VADJUSTMENT,
+ PROP_SHADOW_TYPE
+};
+
+
+static void gtk_viewport_finalize (GObject *object);
+static void gtk_viewport_destroy (GtkObject *object);
+static void gtk_viewport_set_property (GObject *object,
+ guint prop_id,
+ const GValue *value,
+ GParamSpec *pspec);
+static void gtk_viewport_get_property (GObject *object,
+ guint prop_id,
+ GValue *value,
+ GParamSpec *pspec);
+static void gtk_viewport_set_scroll_adjustments (GtkViewport *viewport,
+ GtkAdjustment *hadjustment,
+ GtkAdjustment *vadjustment);
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,
GtkRequisition *requisition);
static void gtk_viewport_size_allocate (GtkWidget *widget,
GtkAllocation *allocation);
-static gint gtk_viewport_need_resize (GtkContainer *container);
-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;
-
-guint
-gtk_viewport_get_type ()
-{
- static guint viewport_type = 0;
-
- if (!viewport_type)
- {
- GtkTypeInfo viewport_info =
- {
- "GtkViewport",
- sizeof (GtkViewport),
- sizeof (GtkViewportClass),
- (GtkClassInitFunc) gtk_viewport_class_init,
- (GtkObjectInitFunc) gtk_viewport_init,
- (GtkArgSetFunc) NULL,
- (GtkArgGetFunc) NULL,
- };
-
- viewport_type = gtk_type_unique (gtk_bin_get_type (), &viewport_info);
- }
-
- return viewport_type;
-}
+G_DEFINE_TYPE (GtkViewport, gtk_viewport, GTK_TYPE_BIN)
static void
gtk_viewport_class_init (GtkViewportClass *class)
{
GtkObjectClass *object_class;
+ GObjectClass *gobject_class;
GtkWidgetClass *widget_class;
GtkContainerClass *container_class;
object_class = (GtkObjectClass*) class;
+ gobject_class = G_OBJECT_CLASS (class);
widget_class = (GtkWidgetClass*) class;
container_class = (GtkContainerClass*) class;
- parent_class = (GtkBinClass*) gtk_type_class (gtk_bin_get_type ());
- object_class->finalize = gtk_viewport_finalize;
+ gobject_class->finalize = gtk_viewport_finalize;
+ gobject_class->set_property = gtk_viewport_set_property;
+ gobject_class->get_property = gtk_viewport_get_property;
+ object_class->destroy = gtk_viewport_destroy;
- 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;
+
container_class->add = gtk_viewport_add;
- container_class->need_resize = gtk_viewport_need_resize;
+
+ class->set_scroll_adjustments = gtk_viewport_set_scroll_adjustments;
+
+ g_object_class_install_property (gobject_class,
+ PROP_HADJUSTMENT,
+ g_param_spec_object ("hadjustment",
+ P_("Horizontal adjustment"),
+ P_("The GtkAdjustment that determines the values of the horizontal position for this viewport"),
+ GTK_TYPE_ADJUSTMENT,
+ GTK_PARAM_READWRITE | G_PARAM_CONSTRUCT));
+
+ g_object_class_install_property (gobject_class,
+ PROP_VADJUSTMENT,
+ g_param_spec_object ("vadjustment",
+ P_("Vertical adjustment"),
+ P_("The GtkAdjustment that determines the values of the vertical position for this viewport"),
+ GTK_TYPE_ADJUSTMENT,
+ GTK_PARAM_READWRITE | G_PARAM_CONSTRUCT));
+
+ g_object_class_install_property (gobject_class,
+ PROP_SHADOW_TYPE,
+ g_param_spec_enum ("shadow-type",
+ P_("Shadow type"),
+ P_("Determines how the shadowed box around the viewport is drawn"),
+ GTK_TYPE_SHADOW_TYPE,
+ GTK_SHADOW_IN,
+ GTK_PARAM_READWRITE));
+
+ /**
+ * GtkViewport::set-scroll-adjustments
+ * @horizontal: the horizontal #GtkAdjustment
+ * @vertical: the vertical #GtkAdjustment
+ *
+ * Set the scroll adjustments for the viewport. Usually scrolled containers
+ * like #GtkScrolledWindow will emit this signal to connect two instances
+ * of #GtkScrollbar to the scroll directions of the #GtkViewport.
+ */
+ widget_class->set_scroll_adjustments_signal =
+ g_signal_new (I_("set-scroll-adjustments"),
+ G_OBJECT_CLASS_TYPE (gobject_class),
+ G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
+ G_STRUCT_OFFSET (GtkViewportClass, set_scroll_adjustments),
+ NULL, NULL,
+ _gtk_marshal_VOID__OBJECT_OBJECT,
+ G_TYPE_NONE, 2,
+ GTK_TYPE_ADJUSTMENT,
+ GTK_TYPE_ADJUSTMENT);
+}
+
+static void
+gtk_viewport_set_property (GObject *object,
+ guint prop_id,
+ const GValue *value,
+ GParamSpec *pspec)
+{
+ GtkViewport *viewport;
+
+ viewport = GTK_VIEWPORT (object);
+
+ switch (prop_id)
+ {
+ case PROP_HADJUSTMENT:
+ gtk_viewport_set_hadjustment (viewport, g_value_get_object (value));
+ break;
+ case PROP_VADJUSTMENT:
+ gtk_viewport_set_vadjustment (viewport, g_value_get_object (value));
+ break;
+ case PROP_SHADOW_TYPE:
+ gtk_viewport_set_shadow_type (viewport, g_value_get_enum (value));
+ break;
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+ break;
+ }
+}
+
+static void
+gtk_viewport_get_property (GObject *object,
+ guint prop_id,
+ GValue *value,
+ GParamSpec *pspec)
+{
+ GtkViewport *viewport;
+
+ viewport = GTK_VIEWPORT (object);
+
+ switch (prop_id)
+ {
+ case PROP_HADJUSTMENT:
+ g_value_set_object (value, viewport->hadjustment);
+ break;
+ case PROP_VADJUSTMENT:
+ g_value_set_object (value, viewport->vadjustment);
+ break;
+ case PROP_SHADOW_TYPE:
+ g_value_set_enum (value, viewport->shadow_type);
+ break;
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+ break;
+ }
}
static void
gtk_viewport_init (GtkViewport *viewport)
{
GTK_WIDGET_UNSET_FLAGS (viewport, GTK_NO_WINDOW);
- GTK_WIDGET_SET_FLAGS (viewport, GTK_BASIC);
+ gtk_widget_set_redraw_on_allocate (GTK_WIDGET (viewport), FALSE);
+ 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->vadjustment = NULL;
}
+/**
+ * gtk_viewport_new:
+ * @hadjustment: horizontal adjustment.
+ * @vadjustment: vertical adjustment.
+ * @returns: a new #GtkViewport.
+ *
+ * Creates a new #GtkViewport with the given adjustments.
+ *
+ **/
GtkWidget*
gtk_viewport_new (GtkAdjustment *hadjustment,
GtkAdjustment *vadjustment)
{
- GtkViewport *viewport;
+ GtkWidget *viewport;
- viewport = gtk_type_new (gtk_viewport_get_type ());
+ viewport = g_object_new (GTK_TYPE_VIEWPORT,
+ "hadjustment", hadjustment,
+ "vadjustment", vadjustment,
+ NULL);
- if (!hadjustment)
- hadjustment = (GtkAdjustment*) gtk_adjustment_new (0.0, 0.0, 0.0, 0.0, 0.0, 0.0);
+ return viewport;
+}
- if (!vadjustment)
- vadjustment = (GtkAdjustment*) gtk_adjustment_new (0.0, 0.0, 0.0, 0.0, 0.0, 0.0);
+#define ADJUSTMENT_POINTER(viewport, orientation) \
+ (((orientation) == GTK_ORIENTATION_HORIZONTAL) ? \
+ &(viewport)->hadjustment : &(viewport)->vadjustment)
- gtk_viewport_set_hadjustment (viewport, hadjustment);
- gtk_viewport_set_vadjustment (viewport, vadjustment);
+static void
+viewport_disconnect_adjustment (GtkViewport *viewport,
+ GtkOrientation orientation)
+{
+ GtkAdjustment **adjustmentp = ADJUSTMENT_POINTER (viewport, orientation);
+
+ if (*adjustmentp)
+ {
+ g_signal_handlers_disconnect_by_func (*adjustmentp,
+ gtk_viewport_adjustment_value_changed,
+ viewport);
+ g_object_unref (*adjustmentp);
+ *adjustmentp = NULL;
+ }
+}
+
+static void
+gtk_viewport_finalize (GObject *object)
+{
+ GtkViewport *viewport = GTK_VIEWPORT (object);
- return GTK_WIDGET (viewport);
+ viewport_disconnect_adjustment (viewport, GTK_ORIENTATION_HORIZONTAL);
+ viewport_disconnect_adjustment (viewport, GTK_ORIENTATION_VERTICAL);
+
+ G_OBJECT_CLASS (gtk_viewport_parent_class)->finalize (object);
}
static void
-gtk_viewport_finalize (GtkObject *object)
+gtk_viewport_destroy (GtkObject *object)
{
GtkViewport *viewport = GTK_VIEWPORT (object);
- gtk_object_unref (GTK_OBJECT (viewport->hadjustment));
- gtk_object_unref (GTK_OBJECT (viewport->vadjustment));
+ viewport_disconnect_adjustment (viewport, GTK_ORIENTATION_HORIZONTAL);
+ viewport_disconnect_adjustment (viewport, GTK_ORIENTATION_VERTICAL);
- GTK_OBJECT_CLASS(parent_class)->finalize (object);
+ GTK_OBJECT_CLASS (gtk_viewport_parent_class)->destroy (object);
}
+/**
+ * gtk_viewport_get_hadjustment:
+ * @viewport: a #GtkViewport.
+ *
+ * Returns the horizontal adjustment of the viewport.
+ *
+ * Return value: the horizontal adjustment of @viewport.
+ **/
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);
+ if (!viewport->hadjustment)
+ gtk_viewport_set_hadjustment (viewport, NULL);
+
return viewport->hadjustment;
}
+/**
+ * gtk_viewport_get_vadjustment:
+ * @viewport: a #GtkViewport.
+ *
+ * Returns the vertical adjustment of the viewport.
+ *
+ * Return value: the vertical adjustment of @viewport.
+ **/
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);
+ if (!viewport->vadjustment)
+ gtk_viewport_set_vadjustment (viewport, NULL);
+
return viewport->vadjustment;
}
+static void
+viewport_get_view_allocation (GtkViewport *viewport,
+ GtkAllocation *view_allocation)
+{
+ GtkWidget *widget = GTK_WIDGET (viewport);
+ GtkAllocation *allocation = &widget->allocation;
+ gint border_width = GTK_CONTAINER (viewport)->border_width;
+
+ view_allocation->x = 0;
+ view_allocation->y = 0;
+
+ if (viewport->shadow_type != GTK_SHADOW_NONE)
+ {
+ view_allocation->x = widget->style->xthickness;
+ view_allocation->y = widget->style->ythickness;
+ }
+
+ view_allocation->width = MAX (1, allocation->width - view_allocation->x * 2 - border_width * 2);
+ view_allocation->height = MAX (1, allocation->height - view_allocation->y * 2 - border_width * 2);
+}
+
+static void
+viewport_reclamp_adjustment (GtkAdjustment *adjustment,
+ gboolean *value_changed)
+{
+ gdouble value = adjustment->value;
+
+ value = CLAMP (value, 0, adjustment->upper - adjustment->page_size);
+ if (value != adjustment->value)
+ {
+ adjustment->value = value;
+ if (value_changed)
+ *value_changed = TRUE;
+ }
+ else if (value_changed)
+ *value_changed = FALSE;
+}
+
+static void
+viewport_set_hadjustment_values (GtkViewport *viewport,
+ gboolean *value_changed)
+{
+ GtkBin *bin = GTK_BIN (viewport);
+ GtkAllocation view_allocation;
+ GtkAdjustment *hadjustment = gtk_viewport_get_hadjustment (viewport);
+ gdouble old_page_size;
+ gdouble old_upper;
+ gdouble old_value;
+
+ viewport_get_view_allocation (viewport, &view_allocation);
+
+ old_page_size = hadjustment->page_size;
+ old_upper = hadjustment->upper;
+ old_value = hadjustment->value;
+ hadjustment->page_size = view_allocation.width;
+ hadjustment->step_increment = view_allocation.width * 0.1;
+ hadjustment->page_increment = view_allocation.width * 0.9;
+
+ hadjustment->lower = 0;
+
+ if (bin->child && gtk_widget_get_visible (bin->child))
+ {
+ GtkRequisition child_requisition;
+
+ gtk_widget_get_child_requisition (bin->child, &child_requisition);
+ hadjustment->upper = MAX (child_requisition.width, view_allocation.width);
+ }
+ else
+ hadjustment->upper = view_allocation.width;
+
+ if (gtk_widget_get_direction (GTK_WIDGET (viewport)) == GTK_TEXT_DIR_RTL)
+ {
+ gdouble dist = old_upper - (old_value + old_page_size);
+ hadjustment->value = hadjustment->upper - dist - hadjustment->page_size;
+ viewport_reclamp_adjustment (hadjustment, value_changed);
+ *value_changed = (old_value != hadjustment->value);
+ }
+ else
+ viewport_reclamp_adjustment (hadjustment, value_changed);
+}
+
+static void
+viewport_set_vadjustment_values (GtkViewport *viewport,
+ gboolean *value_changed)
+{
+ GtkBin *bin = GTK_BIN (viewport);
+ GtkAllocation view_allocation;
+ GtkAdjustment *vadjustment = gtk_viewport_get_vadjustment (viewport);
+
+ viewport_get_view_allocation (viewport, &view_allocation);
+
+ vadjustment->page_size = view_allocation.height;
+ vadjustment->step_increment = view_allocation.height * 0.1;
+ vadjustment->page_increment = view_allocation.height * 0.9;
+
+ vadjustment->lower = 0;
+
+ if (bin->child && gtk_widget_get_visible (bin->child))
+ {
+ GtkRequisition child_requisition;
+
+ gtk_widget_get_child_requisition (bin->child, &child_requisition);
+ vadjustment->upper = MAX (child_requisition.height, view_allocation.height);
+ }
+ else
+ vadjustment->upper = view_allocation.height;
+
+ viewport_reclamp_adjustment (vadjustment, value_changed);
+}
+
+static void
+viewport_set_adjustment (GtkViewport *viewport,
+ GtkOrientation orientation,
+ GtkAdjustment *adjustment)
+{
+ GtkAdjustment **adjustmentp = ADJUSTMENT_POINTER (viewport, orientation);
+ gboolean value_changed;
+
+ if (adjustment && adjustment == *adjustmentp)
+ return;
+
+ if (!adjustment)
+ adjustment = GTK_ADJUSTMENT (gtk_adjustment_new (0.0, 0.0, 0.0,
+ 0.0, 0.0, 0.0));
+ viewport_disconnect_adjustment (viewport, orientation);
+ *adjustmentp = adjustment;
+ g_object_ref_sink (adjustment);
+
+ if (orientation == GTK_ORIENTATION_HORIZONTAL)
+ viewport_set_hadjustment_values (viewport, &value_changed);
+ else
+ viewport_set_vadjustment_values (viewport, &value_changed);
+
+ g_signal_connect (adjustment, "value-changed",
+ G_CALLBACK (gtk_viewport_adjustment_value_changed),
+ viewport);
+
+ gtk_adjustment_changed (adjustment);
+
+ if (value_changed)
+ gtk_adjustment_value_changed (adjustment);
+ else
+ gtk_viewport_adjustment_value_changed (adjustment, viewport);
+}
+
+/**
+ * gtk_viewport_set_hadjustment:
+ * @viewport: a #GtkViewport.
+ * @adjustment: (allow-none): a #GtkAdjustment.
+ *
+ * Sets the horizontal adjustment of the viewport.
+ **/
void
gtk_viewport_set_hadjustment (GtkViewport *viewport,
GtkAdjustment *adjustment)
{
- g_return_if_fail (viewport != NULL);
g_return_if_fail (GTK_IS_VIEWPORT (viewport));
- g_return_if_fail (adjustment != NULL);
+ if (adjustment)
+ g_return_if_fail (GTK_IS_ADJUSTMENT (adjustment));
- if (viewport->hadjustment != adjustment)
- {
- if (viewport->hadjustment)
- {
- gtk_signal_disconnect_by_data (GTK_OBJECT (viewport->hadjustment),
- (gpointer) viewport);
- gtk_object_unref (GTK_OBJECT (viewport->hadjustment));
- }
+ viewport_set_adjustment (viewport, GTK_ORIENTATION_HORIZONTAL, 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, (gpointer) viewport);
- }
+ g_object_notify (G_OBJECT (viewport), "hadjustment");
}
+/**
+ * gtk_viewport_set_vadjustment:
+ * @viewport: a #GtkViewport.
+ * @adjustment: (allow-none): a #GtkAdjustment.
+ *
+ * Sets the vertical adjustment of the viewport.
+ **/
void
gtk_viewport_set_vadjustment (GtkViewport *viewport,
GtkAdjustment *adjustment)
{
- g_return_if_fail (viewport != NULL);
g_return_if_fail (GTK_IS_VIEWPORT (viewport));
- g_return_if_fail (adjustment != NULL);
+ if (adjustment)
+ g_return_if_fail (GTK_IS_ADJUSTMENT (adjustment));
- if (viewport->vadjustment != adjustment)
- {
- if (viewport->vadjustment)
- {
- gtk_signal_disconnect_by_data (GTK_OBJECT (viewport->vadjustment),
- (gpointer) viewport);
- gtk_object_unref (GTK_OBJECT (viewport->vadjustment));
- }
+ viewport_set_adjustment (viewport, GTK_ORIENTATION_VERTICAL, 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, (gpointer) viewport);
- }
+ g_object_notify (G_OBJECT (viewport), "vadjustment");
}
+static void
+gtk_viewport_set_scroll_adjustments (GtkViewport *viewport,
+ GtkAdjustment *hadjustment,
+ GtkAdjustment *vadjustment)
+{
+ gtk_viewport_set_hadjustment (viewport, hadjustment);
+ gtk_viewport_set_vadjustment (viewport, vadjustment);
+}
+
+/**
+ * gtk_viewport_set_shadow_type:
+ * @viewport: a #GtkViewport.
+ * @type: the new shadow type.
+ *
+ * Sets the shadow type of the viewport.
+ **/
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))
+ if (gtk_widget_get_visible (GTK_WIDGET (viewport)))
{
gtk_widget_size_allocate (GTK_WIDGET (viewport), &(GTK_WIDGET (viewport)->allocation));
gtk_widget_queue_draw (GTK_WIDGET (viewport));
}
+
+ g_object_notify (G_OBJECT (viewport), "shadow-type");
}
}
-
-static void
-gtk_viewport_map (GtkWidget *widget)
+/**
+ * gtk_viewport_get_shadow_type:
+ * @viewport: a #GtkViewport
+ *
+ * Gets the shadow type of the #GtkViewport. See
+ * gtk_viewport_set_shadow_type().
+
+ * Return value: the shadow type
+ **/
+GtkShadowType
+gtk_viewport_get_shadow_type (GtkViewport *viewport)
{
- GtkBin *bin;
-
- g_return_if_fail (widget != NULL);
- g_return_if_fail (GTK_IS_VIEWPORT (widget));
+ g_return_val_if_fail (GTK_IS_VIEWPORT (viewport), GTK_SHADOW_NONE);
- 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);
+ return viewport->shadow_type;
}
-static void
-gtk_viewport_unmap (GtkWidget *widget)
+/**
+ * gtk_viewport_get_bin_window:
+ * @viewport: a #GtkViewport
+ *
+ * Gets the bin window of the #GtkViewport.
+ *
+ * Return value: a #GdkWindow
+ *
+ * Since: 2.20
+ **/
+GdkWindow*
+gtk_viewport_get_bin_window (GtkViewport *viewport)
{
- g_return_if_fail (widget != NULL);
- g_return_if_fail (GTK_IS_VIEWPORT (widget));
+ g_return_val_if_fail (GTK_IS_VIEWPORT (viewport), NULL);
- GTK_WIDGET_UNSET_FLAGS (widget, GTK_MAPPED);
-
- gdk_window_hide (widget->window);
+ return viewport->bin_window;
}
static void
gtk_viewport_realize (GtkWidget *widget)
{
- GtkBin *bin;
- GtkViewport *viewport;
+ GtkViewport *viewport = GTK_VIEWPORT (widget);
+ GtkBin *bin = GTK_BIN (widget);
+ GtkAdjustment *hadjustment = gtk_viewport_get_hadjustment (viewport);
+ GtkAdjustment *vadjustment = gtk_viewport_get_vadjustment (viewport);
+ gint border_width = GTK_CONTAINER (widget)->border_width;
+
+ GtkAllocation view_allocation;
GdkWindowAttr attributes;
- GtkRequisition *child_requisition;
gint attributes_mask;
gint event_mask;
- g_return_if_fail (widget != NULL);
- g_return_if_fail (GTK_IS_VIEWPORT (widget));
-
- bin = GTK_BIN (widget);
- viewport = GTK_VIEWPORT (widget);
GTK_WIDGET_SET_FLAGS (widget, GTK_REALIZED);
- attributes.x = widget->allocation.x + GTK_CONTAINER (widget)->border_width;
- attributes.y = widget->allocation.y + GTK_CONTAINER (widget)->border_width;
- attributes.width = widget->allocation.width - GTK_CONTAINER (widget)->border_width * 2;
- attributes.height = widget->allocation.height - GTK_CONTAINER (widget)->border_width * 2;
+ 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;
+ /* We select on button_press_mask so that button 4-5 scrolls are trapped.
+ */
+ attributes.event_mask = event_mask | GDK_BUTTON_PRESS_MASK;
attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP;
&attributes, attributes_mask);
gdk_window_set_user_data (widget->window, viewport);
- attributes.x += widget->style->klass->xthickness;
- attributes.y += widget->style->klass->ythickness;
- attributes.width -= widget->style->klass->xthickness * 2;
- attributes.height -= widget->style->klass->ythickness * 2;
+ viewport_get_view_allocation (viewport, &view_allocation);
+
+ attributes.x = view_allocation.x;
+ attributes.y = view_allocation.y;
+ attributes.width = view_allocation.width;
+ attributes.height = view_allocation.height;
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;
+ gdk_window_set_back_pixmap (viewport->view_window, NULL, FALSE);
+
+ attributes.x = - hadjustment->value;
+ attributes.y = - vadjustment->value;
+ attributes.width = hadjustment->upper;
+ attributes.height = 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)
- {
- child_requisition = >K_WIDGET (GTK_BIN (viewport)->child)->requisition;
- attributes.width = child_requisition->width;
- attributes.height = child_requisition->height;
-
- gtk_widget_set_parent_window (bin->child, viewport->bin_window);
- }
+ 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);
-
+
+ /* Call paint here to allow a theme to set the background without flashing
+ */
+ 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);
+ GtkViewport *viewport = GTK_VIEWPORT (widget);
gdk_window_set_user_data (viewport->view_window, NULL);
gdk_window_destroy (viewport->view_window);
gdk_window_destroy (viewport->bin_window);
viewport->bin_window = NULL;
- if (GTK_WIDGET_CLASS (parent_class)->unrealize)
- (* GTK_WIDGET_CLASS (parent_class)->unrealize) (widget);
+ GTK_WIDGET_CLASS (gtk_viewport_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))
+ if (gtk_widget_is_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);
-
- if (bin->child)
- {
- tmp_area.x += viewport->hadjustment->value - widget->style->klass->xthickness;
- tmp_area.y += viewport->vadjustment->value - widget->style->klass->ythickness;
+ GtkViewport *viewport = GTK_VIEWPORT (widget);
- if (gtk_widget_intersect (bin->child, &tmp_area, &child_area))
- gtk_widget_draw (bin->child, &child_area);
- }
+ gtk_paint_shadow (widget->style, widget->window,
+ GTK_STATE_NORMAL, viewport->shadow_type,
+ area, widget, "viewport",
+ 0, 0, -1, -1);
}
}
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))
+ if (gtk_widget_is_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)
+ {
+ gtk_paint_flat_box(widget->style, viewport->bin_window,
+ GTK_STATE_NORMAL, GTK_SHADOW_NONE,
+ &event->area, widget, "viewportbin",
+ 0, 0, -1, -1);
- child_event = *event;
- if ((event->window == viewport->bin_window) &&
- (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);
+ GTK_WIDGET_CLASS (gtk_viewport_parent_class)->expose_event (widget, event);
+ }
}
return FALSE;
static void
gtk_viewport_add (GtkContainer *container,
- GtkWidget *widget)
+ GtkWidget *child)
{
- GtkBin *bin;
-
- g_return_if_fail (container != NULL);
- g_return_if_fail (GTK_IS_VIEWPORT (container));
- g_return_if_fail (widget != NULL);
+ GtkBin *bin = GTK_BIN (container);
- bin = GTK_BIN (container);
-
- if (!bin->child)
- {
- gtk_widget_set_parent (widget, GTK_WIDGET (container));
- gtk_widget_set_parent_window (widget, GTK_VIEWPORT (container)->bin_window);
- if (GTK_WIDGET_VISIBLE (widget->parent))
- {
- if (GTK_WIDGET_MAPPED (widget->parent) &&
- !GTK_WIDGET_MAPPED (widget))
- gtk_widget_map (widget);
- }
+ g_return_if_fail (bin->child == NULL);
- bin->child = widget;
+ gtk_widget_set_parent_window (child, GTK_VIEWPORT (bin)->bin_window);
- if (GTK_WIDGET_VISIBLE (widget) && GTK_WIDGET_VISIBLE (container))
- gtk_widget_queue_resize (widget);
- }
+ GTK_CONTAINER_CLASS (gtk_viewport_parent_class)->add (container, child);
}
static void
gtk_viewport_size_request (GtkWidget *widget,
GtkRequisition *requisition)
{
- GtkViewport *viewport;
- GtkBin *bin;
+ GtkBin *bin = GTK_BIN (widget);
+ GtkRequisition child_requisition;
- g_return_if_fail (widget != NULL);
- g_return_if_fail (GTK_IS_VIEWPORT (widget));
- g_return_if_fail (requisition != NULL);
+ requisition->width = GTK_CONTAINER (widget)->border_width;
- viewport = GTK_VIEWPORT (widget);
- bin = GTK_BIN (widget);
+ requisition->height = GTK_CONTAINER (widget)->border_width;
- 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 (GTK_VIEWPORT (widget)->shadow_type != GTK_SHADOW_NONE)
+ {
+ requisition->width += 2 * widget->style->xthickness;
+ requisition->height += 2 * widget->style->ythickness;
+ }
- if (bin->child && GTK_WIDGET_VISIBLE (bin->child))
- gtk_widget_size_request (bin->child, &bin->child->requisition);
+ if (bin->child && gtk_widget_get_visible (bin->child))
+ {
+ gtk_widget_size_request (bin->child, &child_requisition);
+ requisition->width += child_requisition.width;
+ requisition->height += child_requisition.height;
+ }
}
static void
gtk_viewport_size_allocate (GtkWidget *widget,
GtkAllocation *allocation)
{
- GtkViewport *viewport;
- GtkBin *bin;
+ GtkViewport *viewport = GTK_VIEWPORT (widget);
+ GtkBin *bin = GTK_BIN (widget);
+ gint border_width = GTK_CONTAINER (widget)->border_width;
+ gboolean hadjustment_value_changed, vadjustment_value_changed;
+ GtkAdjustment *hadjustment = gtk_viewport_get_hadjustment (viewport);
+ GtkAdjustment *vadjustment = gtk_viewport_get_vadjustment (viewport);
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);
+ /* If our size changed, and we have a shadow, queue a redraw on widget->window to
+ * redraw the shadow correctly.
+ */
+ if (gtk_widget_get_mapped (widget) &&
+ viewport->shadow_type != GTK_SHADOW_NONE &&
+ (widget->allocation.width != allocation->width ||
+ widget->allocation.height != allocation->height))
+ gdk_window_invalidate_rect (widget->window, NULL, FALSE);
+
widget->allocation = *allocation;
- viewport = GTK_VIEWPORT (widget);
- bin = GTK_BIN (widget);
-
- border_width = GTK_CONTAINER (widget)->border_width;
-
+
+ viewport_set_hadjustment_values (viewport, &hadjustment_value_changed);
+ viewport_set_vadjustment_values (viewport, &vadjustment_value_changed);
+
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 = allocation->width - child_allocation.x * 2 - border_width * 2;
- child_allocation.height = allocation->height - child_allocation.y * 2 - border_width * 2;
-
+ child_allocation.width = hadjustment->upper;
+ child_allocation.height = vadjustment->upper;
if (GTK_WIDGET_REALIZED (widget))
{
+ GtkAllocation view_allocation;
gdk_window_move_resize (widget->window,
allocation->x + border_width,
allocation->y + border_width,
allocation->width - border_width * 2,
allocation->height - border_width * 2);
-
+
+ viewport_get_view_allocation (viewport, &view_allocation);
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");
+ view_allocation.x,
+ view_allocation.y,
+ view_allocation.width,
+ view_allocation.height);
+ gdk_window_move_resize (viewport->bin_window,
+ - hadjustment->value,
+ - vadjustment->value,
+ child_allocation.width,
+ child_allocation.height);
}
+ if (bin->child && gtk_widget_get_visible (bin->child))
+ gtk_widget_size_allocate (bin->child, &child_allocation);
+
+ gtk_adjustment_changed (hadjustment);
+ gtk_adjustment_changed (vadjustment);
+ if (hadjustment_value_changed)
+ gtk_adjustment_value_changed (hadjustment);
+ if (vadjustment_value_changed)
+ gtk_adjustment_value_changed (vadjustment);
}
-static gint
-gtk_viewport_need_resize (GtkContainer *container)
+static void
+gtk_viewport_adjustment_value_changed (GtkAdjustment *adjustment,
+ gpointer data)
{
- GtkBin *bin;
-
- g_return_val_if_fail (container != NULL, FALSE);
- g_return_val_if_fail (GTK_IS_VIEWPORT (container), FALSE);
+ GtkViewport *viewport = GTK_VIEWPORT (data);
+ GtkBin *bin = GTK_BIN (data);
- if (GTK_WIDGET_REALIZED (container))
+ if (bin->child && gtk_widget_get_visible (bin->child) &&
+ GTK_WIDGET_REALIZED (viewport))
{
- bin = GTK_BIN (container);
+ GtkAdjustment *hadjustment = gtk_viewport_get_hadjustment (viewport);
+ GtkAdjustment *vadjustment = gtk_viewport_get_vadjustment (viewport);
+ gint old_x, old_y;
+ gint new_x, new_y;
- gtk_widget_size_request (bin->child, &bin->child->requisition);
+ gdk_window_get_position (viewport->bin_window, &old_x, &old_y);
+ new_x = - hadjustment->value;
+ new_y = - vadjustment->value;
- gtk_widget_size_allocate (GTK_WIDGET (container),
- &(GTK_WIDGET (container)->allocation));
+ if (new_x != old_x || new_y != old_y)
+ {
+ gdk_window_move (viewport->bin_window, new_x, new_y);
+ gdk_window_process_updates (viewport->bin_window, TRUE);
+ }
}
-
- return FALSE;
}
static void
-gtk_viewport_adjustment_changed (GtkAdjustment *adjustment,
- gpointer data)
+gtk_viewport_style_set (GtkWidget *widget,
+ GtkStyle *previous_style)
{
- 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);
+ if (GTK_WIDGET_REALIZED (widget) &&
+ gtk_widget_get_has_window (widget))
+ {
+ GtkViewport *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);
+ }
}
-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);
- }
-}
+#define __GTK_VIEWPORT_C__
+#include "gtkaliasdef.c"
projects / ~andy / gtk / blobdiff