* 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, see <http://www.gnu.org/licenses/>.
*/
-#include "gtksignal.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/.
+ */
+
+#include "config.h"
+
#include "gtkviewport.h"
+#include "gtkadjustment.h"
+#include "gtkintl.h"
+#include "gtkmarshalers.h"
+#include "gtkprivate.h"
+#include "gtkscrollable.h"
+#include "gtktypebuiltins.h"
-static void gtk_viewport_class_init (GtkViewportClass *klass);
-static void gtk_viewport_init (GtkViewport *viewport);
-static void gtk_viewport_map (GtkWidget *widget);
-static void gtk_viewport_unmap (GtkWidget *widget);
+
+/**
+ * SECTION:gtkviewport
+ * @Short_description: An adapter which makes widgets scrollable
+ * @Title: GtkViewport
+ * @See_also:#GtkScrolledWindow, #GtkAdjustment
+ *
+ * The #GtkViewport widget acts as an adaptor class, implementing
+ * scrollability for child widgets that lack their own scrolling
+ * capabilities. Use #GtkViewport to scroll child widgets such as
+ * #GtkGrid, #GtkBox, and so on.
+ *
+ * If a widget has native scrolling abilities, such as #GtkTextView,
+ * #GtkTreeView or #GtkIconView, it can be added to a #GtkScrolledWindow
+ * with gtk_container_add(). If a widget does not, you must first add the
+ * widget to a #GtkViewport, then add the viewport to the scrolled window.
+ * gtk_container_add() does this automatically if a child that does not
+ * implement #GtkScrollable is added to a #GtkScrolledWindow, so you can
+ * ignore the presence of the viewport.
+ *
+ * The #GtkViewport will start scrolling content only if allocated less
+ * than the child widget's minimum size in a given orientation.
+ */
+
+struct _GtkViewportPrivate
+{
+ GtkAdjustment *hadjustment;
+ GtkAdjustment *vadjustment;
+ GtkShadowType shadow_type;
+
+ GdkWindow *bin_window;
+ GdkWindow *view_window;
+
+ /* GtkScrollablePolicy needs to be checked when
+ * driving the scrollable adjustment values */
+ guint hscroll_policy : 1;
+ guint vscroll_policy : 1;
+};
+
+enum {
+ PROP_0,
+ PROP_HADJUSTMENT,
+ PROP_VADJUSTMENT,
+ PROP_HSCROLL_POLICY,
+ PROP_VSCROLL_POLICY,
+ PROP_SHADOW_TYPE
+};
+
+
+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_destroy (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_size_request (GtkWidget *widget,
- GtkRequisition *requisition);
+static gint gtk_viewport_draw (GtkWidget *widget,
+ cairo_t *cr);
+static void gtk_viewport_add (GtkContainer *container,
+ GtkWidget *widget);
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_updated (GtkWidget *widget);
+static void gtk_viewport_get_preferred_width (GtkWidget *widget,
+ gint *minimum_size,
+ gint *natural_size);
+static void gtk_viewport_get_preferred_height (GtkWidget *widget,
+ gint *minimum_size,
+ gint *natural_size);
-guint
-gtk_viewport_get_type ()
-{
- static guint viewport_type = 0;
+static void viewport_set_adjustment (GtkViewport *viewport,
+ GtkOrientation orientation,
+ GtkAdjustment *adjustment);
- if (!viewport_type)
- {
- GtkTypeInfo viewport_info =
- {
- "GtkViewport",
- sizeof (GtkViewport),
- sizeof (GtkViewportClass),
- (GtkClassInitFunc) gtk_viewport_class_init,
- (GtkObjectInitFunc) gtk_viewport_init,
- (GtkArgFunc) NULL,
- };
-
- viewport_type = gtk_type_unique (gtk_bin_get_type (), &viewport_info);
- }
-
- return viewport_type;
-}
+G_DEFINE_TYPE_WITH_CODE (GtkViewport, gtk_viewport, GTK_TYPE_BIN,
+ G_IMPLEMENT_INTERFACE (GTK_TYPE_SCROLLABLE, NULL))
static void
gtk_viewport_class_init (GtkViewportClass *class)
{
+ GObjectClass *gobject_class;
GtkWidgetClass *widget_class;
GtkContainerClass *container_class;
+ gobject_class = G_OBJECT_CLASS (class);
widget_class = (GtkWidgetClass*) class;
container_class = (GtkContainerClass*) class;
- widget_class->map = gtk_viewport_map;
- widget_class->unmap = gtk_viewport_unmap;
+ gobject_class->set_property = gtk_viewport_set_property;
+ gobject_class->get_property = gtk_viewport_get_property;
+
+ widget_class->destroy = gtk_viewport_destroy;
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_updated = gtk_viewport_style_updated;
+ widget_class->get_preferred_width = gtk_viewport_get_preferred_width;
+ widget_class->get_preferred_height = gtk_viewport_get_preferred_height;
+
+ gtk_widget_class_set_accessible_role (widget_class, ATK_ROLE_VIEWPORT);
+
+ container_class->add = gtk_viewport_add;
+
+ /* GtkScrollable implementation */
+ g_object_class_override_property (gobject_class, PROP_HADJUSTMENT, "hadjustment");
+ g_object_class_override_property (gobject_class, PROP_VADJUSTMENT, "vadjustment");
+ g_object_class_override_property (gobject_class, PROP_HSCROLL_POLICY, "hscroll-policy");
+ g_object_class_override_property (gobject_class, PROP_VSCROLL_POLICY, "vscroll-policy");
+
+ 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));
+
+ g_type_class_add_private (class, sizeof (GtkViewportPrivate));
+}
+
+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:
+ viewport_set_adjustment (viewport, GTK_ORIENTATION_HORIZONTAL, g_value_get_object (value));
+ break;
+ case PROP_VADJUSTMENT:
+ viewport_set_adjustment (viewport, GTK_ORIENTATION_VERTICAL, g_value_get_object (value));
+ break;
+ case PROP_HSCROLL_POLICY:
+ viewport->priv->hscroll_policy = g_value_get_enum (value);
+ gtk_widget_queue_resize (GTK_WIDGET (viewport));
+ break;
+ case PROP_VSCROLL_POLICY:
+ viewport->priv->vscroll_policy = g_value_get_enum (value);
+ gtk_widget_queue_resize (GTK_WIDGET (viewport));
+ 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;
+ }
+}
- container_class->need_resize = gtk_viewport_need_resize;
+static void
+gtk_viewport_get_property (GObject *object,
+ guint prop_id,
+ GValue *value,
+ GParamSpec *pspec)
+{
+ GtkViewport *viewport = GTK_VIEWPORT (object);
+ GtkViewportPrivate *priv = viewport->priv;
+
+ switch (prop_id)
+ {
+ case PROP_HADJUSTMENT:
+ g_value_set_object (value, priv->hadjustment);
+ break;
+ case PROP_VADJUSTMENT:
+ g_value_set_object (value, priv->vadjustment);
+ break;
+ case PROP_HSCROLL_POLICY:
+ g_value_set_enum (value, priv->hscroll_policy);
+ break;
+ case PROP_VSCROLL_POLICY:
+ g_value_set_enum (value, priv->vscroll_policy);
+ break;
+ case PROP_SHADOW_TYPE:
+ g_value_set_enum (value, priv->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);
-
- viewport->shadow_type = GTK_SHADOW_IN;
- viewport->main_window = NULL;
- viewport->view_window = NULL;
- viewport->hadjustment = NULL;
- viewport->vadjustment = NULL;
+ GtkViewportPrivate *priv;
+
+ viewport->priv = G_TYPE_INSTANCE_GET_PRIVATE (viewport,
+ GTK_TYPE_VIEWPORT,
+ GtkViewportPrivate);
+ priv = viewport->priv;
+
+ gtk_widget_set_has_window (GTK_WIDGET (viewport), TRUE);
+
+ gtk_widget_set_redraw_on_allocate (GTK_WIDGET (viewport), FALSE);
+
+ priv->shadow_type = GTK_SHADOW_IN;
+ priv->view_window = NULL;
+ priv->bin_window = NULL;
+ priv->hadjustment = NULL;
+ priv->vadjustment = NULL;
+
+ viewport_set_adjustment (viewport, GTK_ORIENTATION_HORIZONTAL, NULL);
+ viewport_set_adjustment (viewport, GTK_ORIENTATION_VERTICAL, NULL);
}
+/**
+ * gtk_viewport_new:
+ * @hadjustment: (allow-none): horizontal adjustment
+ * @vadjustment: (allow-none): vertical adjustment
+ *
+ * Creates a new #GtkViewport with the given adjustments, or with default
+ * adjustments if none are given.
+ *
+ * Returns: a new #GtkViewport
+ */
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)->priv->hadjustment : &(viewport)->priv->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_destroy (GtkWidget *widget)
+{
+ GtkViewport *viewport = GTK_VIEWPORT (widget);
- return GTK_WIDGET (viewport);
+ viewport_disconnect_adjustment (viewport, GTK_ORIENTATION_HORIZONTAL);
+ viewport_disconnect_adjustment (viewport, GTK_ORIENTATION_VERTICAL);
+
+ GTK_WIDGET_CLASS (gtk_viewport_parent_class)->destroy (widget);
}
+static void
+viewport_get_view_allocation (GtkViewport *viewport,
+ GtkAllocation *view_allocation)
+{
+ GtkViewportPrivate *priv = viewport->priv;
+ GtkWidget *widget = GTK_WIDGET (viewport);
+ GtkAllocation allocation;
+ GtkStyleContext *context;
+ GtkStateFlags state;
+ GtkBorder padding, border;
+ guint border_width;
+
+ gtk_widget_get_allocation (widget, &allocation);
+ border_width = gtk_container_get_border_width (GTK_CONTAINER (viewport));
+
+ view_allocation->x = 0;
+ view_allocation->y = 0;
+
+ context = gtk_widget_get_style_context (widget);
+ state = gtk_widget_get_state_flags (widget);
+ gtk_style_context_save (context);
+ gtk_style_context_add_class (context, GTK_STYLE_CLASS_FRAME);
+
+ gtk_style_context_get_padding (context, state, &padding);
+ gtk_style_context_get_border (context, state, &border);
+
+ gtk_style_context_restore (context);
+
+ if (priv->shadow_type != GTK_SHADOW_NONE)
+ {
+ view_allocation->x = border.left;
+ view_allocation->y = border.top;
+ }
+
+ view_allocation->x += padding.left;
+ view_allocation->y += padding.top;
+ view_allocation->width = MAX (1, allocation.width - padding.left - padding.right - border_width * 2);
+ view_allocation->height = MAX (1, allocation.height - padding.top - padding.bottom - border_width * 2);
+
+ if (priv->shadow_type != GTK_SHADOW_NONE)
+ {
+ view_allocation->width = MAX (1, view_allocation->width - border.left - border.right);
+ view_allocation->height = MAX (1, view_allocation->height - border.top - border.bottom);
+ }
+}
+
+/**
+ * gtk_viewport_get_hadjustment:
+ * @viewport: a #GtkViewport.
+ *
+ * Returns the horizontal adjustment of the viewport.
+ *
+ * Return value: (transfer none): the horizontal adjustment of @viewport.
+ *
+ * Deprecated: 3.0: Use gtk_scrollable_get_hadjustment()
+ **/
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;
+ return viewport->priv->hadjustment;
}
+/**
+ * gtk_viewport_get_vadjustment:
+ * @viewport: a #GtkViewport.
+ *
+ * Returns the vertical adjustment of the viewport.
+ *
+ * Return value: (transfer none): the vertical adjustment of @viewport.
+ *
+ * Deprecated: 3.0: Use gtk_scrollable_get_vadjustment()
+ **/
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;
+ return viewport->priv->vadjustment;
}
-void
-gtk_viewport_set_hadjustment (GtkViewport *viewport,
- GtkAdjustment *adjustment)
+static void
+viewport_set_hadjustment_values (GtkViewport *viewport)
{
- g_return_if_fail (viewport != NULL);
- g_return_if_fail (GTK_IS_VIEWPORT (viewport));
- g_return_if_fail (adjustment != NULL);
+ GtkBin *bin = GTK_BIN (viewport);
+ GtkAllocation view_allocation;
+ GtkAdjustment *hadjustment = viewport->priv->hadjustment;
+ GtkWidget *child;
+ gdouble upper, value;
+
+ viewport_get_view_allocation (viewport, &view_allocation);
- if (viewport->hadjustment != adjustment)
+ child = gtk_bin_get_child (bin);
+ if (child && gtk_widget_get_visible (child))
{
- if (viewport->hadjustment)
- {
- gtk_signal_disconnect_by_data (GTK_OBJECT (viewport->hadjustment),
- (gpointer) viewport);
- gtk_object_unref (GTK_OBJECT (viewport->hadjustment));
- }
+ gint minimum_width, natural_width;
+ gint scroll_height;
+
+ if (viewport->priv->vscroll_policy == GTK_SCROLL_MINIMUM)
+ gtk_widget_get_preferred_height (child, &scroll_height, NULL);
+ else
+ gtk_widget_get_preferred_height (child, NULL, &scroll_height);
+
+ gtk_widget_get_preferred_width_for_height (child,
+ MAX (view_allocation.height, scroll_height),
+ &minimum_width,
+ &natural_width);
+
+ if (viewport->priv->hscroll_policy == GTK_SCROLL_MINIMUM)
+ upper = MAX (minimum_width, view_allocation.width);
+ else
+ upper = MAX (natural_width, view_allocation.width);
+ }
+ else
+ upper = view_allocation.width;
- viewport->hadjustment = adjustment;
- gtk_object_ref (GTK_OBJECT (viewport->hadjustment));
+ value = gtk_adjustment_get_value (hadjustment);
+ /* We clamp to the left in RTL mode */
+ if (gtk_widget_get_direction (GTK_WIDGET (viewport)) == GTK_TEXT_DIR_RTL)
+ {
+ gdouble dist = gtk_adjustment_get_upper (hadjustment)
+ - value
+ - gtk_adjustment_get_page_size (hadjustment);
+ value = upper - dist - view_allocation.width;
+ }
- 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_adjustment_configure (hadjustment,
+ value,
+ 0,
+ upper,
+ view_allocation.width * 0.1,
+ view_allocation.width * 0.9,
+ view_allocation.width);
+}
+
+static void
+viewport_set_vadjustment_values (GtkViewport *viewport)
+{
+ GtkBin *bin = GTK_BIN (viewport);
+ GtkAllocation view_allocation;
+ GtkAdjustment *vadjustment = viewport->priv->vadjustment;
+ GtkWidget *child;
+ gdouble upper;
- gtk_viewport_adjustment_changed (adjustment, (gpointer) viewport);
+ viewport_get_view_allocation (viewport, &view_allocation);
+
+ child = gtk_bin_get_child (bin);
+ if (child && gtk_widget_get_visible (child))
+ {
+ gint minimum_height, natural_height;
+ gint scroll_width;
+
+ if (viewport->priv->hscroll_policy == GTK_SCROLL_MINIMUM)
+ gtk_widget_get_preferred_width (child, &scroll_width, NULL);
+ else
+ gtk_widget_get_preferred_width (child, NULL, &scroll_width);
+
+ gtk_widget_get_preferred_height_for_width (child,
+ MAX (view_allocation.width, scroll_width),
+ &minimum_height,
+ &natural_height);
+
+ if (viewport->priv->vscroll_policy == GTK_SCROLL_MINIMUM)
+ upper = MAX (minimum_height, view_allocation.height);
+ else
+ upper = MAX (natural_height, view_allocation.height);
}
+ else
+ upper = view_allocation.height;
+
+ gtk_adjustment_configure (vadjustment,
+ gtk_adjustment_get_value (vadjustment),
+ 0,
+ upper,
+ view_allocation.height * 0.1,
+ view_allocation.height * 0.9,
+ view_allocation.height);
+}
+
+static void
+viewport_set_adjustment (GtkViewport *viewport,
+ GtkOrientation orientation,
+ GtkAdjustment *adjustment)
+{
+ GtkAdjustment **adjustmentp = ADJUSTMENT_POINTER (viewport, orientation);
+
+ if (adjustment && adjustment == *adjustmentp)
+ return;
+
+ if (!adjustment)
+ 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);
+ else
+ viewport_set_vadjustment_values (viewport);
+
+ g_signal_connect (adjustment, "value-changed",
+ G_CALLBACK (gtk_viewport_adjustment_value_changed),
+ viewport);
+
+ 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.
+ *
+ * Deprecated: 3.0: Use gtk_scrollable_set_hadjustment()
+ **/
+void
+gtk_viewport_set_hadjustment (GtkViewport *viewport,
+ GtkAdjustment *adjustment)
+{
+ g_return_if_fail (GTK_IS_VIEWPORT (viewport));
+ if (adjustment)
+ g_return_if_fail (GTK_IS_ADJUSTMENT (adjustment));
+
+ viewport_set_adjustment (viewport, GTK_ORIENTATION_HORIZONTAL, adjustment);
+
+ 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.
+ *
+ * Deprecated: 3.0: Use gtk_scrollable_set_vadjustment()
+ **/
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_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");
}
+/**
+ * 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);
+ GtkViewportPrivate *priv;
+ GtkAllocation allocation;
+ GtkWidget *widget;
+
g_return_if_fail (GTK_IS_VIEWPORT (viewport));
- if ((GtkShadowType) viewport->shadow_type != type)
+ widget = GTK_WIDGET (viewport);
+ priv = viewport->priv;
+
+ if ((GtkShadowType) priv->shadow_type != type)
{
- viewport->shadow_type = type;
+ priv->shadow_type = type;
- if (GTK_WIDGET_VISIBLE (viewport))
+ if (gtk_widget_get_visible (widget))
{
- gtk_widget_size_allocate (GTK_WIDGET (viewport), &(GTK_WIDGET (viewport)->allocation));
- gtk_widget_queue_draw (GTK_WIDGET (viewport));
+ gtk_widget_get_allocation (widget, &allocation);
+ gtk_widget_size_allocate (widget, &allocation);
+ gtk_widget_set_allocation (widget, &allocation);
+ gtk_widget_queue_draw (widget);
}
+
+ 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)
{
- 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);
- viewport = GTK_VIEWPORT (widget);
- bin = GTK_BIN (widget);
+ return viewport->priv->shadow_type;
+}
- gdk_window_show (viewport->main_window);
+/**
+ * gtk_viewport_get_bin_window:
+ * @viewport: a #GtkViewport
+ *
+ * Gets the bin window of the #GtkViewport.
+ *
+ * Return value: (transfer none): a #GdkWindow
+ *
+ * Since: 2.20
+ **/
+GdkWindow*
+gtk_viewport_get_bin_window (GtkViewport *viewport)
+{
+ g_return_val_if_fail (GTK_IS_VIEWPORT (viewport), NULL);
- if (bin->child &&
- GTK_WIDGET_VISIBLE (bin->child) &&
- !GTK_WIDGET_MAPPED (bin->child))
- gtk_widget_map (bin->child);
+ return viewport->priv->bin_window;
}
-static void
-gtk_viewport_unmap (GtkWidget *widget)
+/**
+ * gtk_viewport_get_view_window:
+ * @viewport: a #GtkViewport
+ *
+ * Gets the view window of the #GtkViewport.
+ *
+ * Return value: (transfer none): a #GdkWindow
+ *
+ * Since: 2.22
+ **/
+GdkWindow*
+gtk_viewport_get_view_window (GtkViewport *viewport)
{
- 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);
- viewport = GTK_VIEWPORT (widget);
-
- gdk_window_hide (viewport->main_window);
+ return viewport->priv->view_window;
}
static void
gtk_viewport_realize (GtkWidget *widget)
{
- GtkViewport *viewport;
+ GtkViewport *viewport = GTK_VIEWPORT (widget);
+ GtkViewportPrivate *priv = viewport->priv;
+ GtkBin *bin = GTK_BIN (widget);
+ GtkAdjustment *hadjustment = priv->hadjustment;
+ GtkAdjustment *vadjustment = priv->vadjustment;
+ GtkAllocation allocation;
+ GtkAllocation view_allocation;
+ GtkStyleContext *context;
+ GtkWidget *child;
+ GdkWindow *window;
GdkWindowAttr attributes;
- GtkRequisition *child_requisition;
gint attributes_mask;
+ gint event_mask;
+ guint border_width;
+
+ border_width = gtk_container_get_border_width (GTK_CONTAINER (widget));
- g_return_if_fail (widget != NULL);
- g_return_if_fail (GTK_IS_VIEWPORT (widget));
+ gtk_widget_set_realized (widget, TRUE);
- viewport = GTK_VIEWPORT (widget);
- GTK_WIDGET_SET_FLAGS (widget, GTK_REALIZED);
+ gtk_widget_get_allocation (widget, &allocation);
- 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 = allocation.x + border_width;
+ attributes.y = allocation.y + border_width;
+ attributes.width = allocation.width - border_width * 2;
+ attributes.height = 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);
- 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;
+ event_mask = gtk_widget_get_events (widget) | GDK_EXPOSURE_MASK;
- viewport->main_window = gdk_window_new (widget->parent->window, &attributes, attributes_mask);
- gdk_window_set_user_data (viewport->main_window, viewport);
+ attributes.event_mask = event_mask | GDK_SCROLL_MASK | GDK_TOUCH_MASK | GDK_SMOOTH_SCROLL_MASK;
- 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;
+ attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL;
- viewport->view_window = gdk_window_new (viewport->main_window, &attributes, attributes_mask);
- gdk_window_set_user_data (viewport->view_window, viewport);
+ window = gdk_window_new (gtk_widget_get_parent_window (widget),
+ &attributes, attributes_mask);
+ gtk_widget_set_window (widget, window);
+ gtk_widget_register_window (widget, window);
- attributes.x = 0;
- attributes.y = 0;
+ 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;
+
+ priv->view_window = gdk_window_new (window,
+ &attributes, attributes_mask);
+ gtk_widget_register_window (widget, priv->view_window);
+
+ attributes.x = - gtk_adjustment_get_value (hadjustment);
+ attributes.y = - gtk_adjustment_get_value (vadjustment);
+ attributes.width = gtk_adjustment_get_upper (hadjustment);
+ attributes.height = gtk_adjustment_get_upper (vadjustment);
+
+ attributes.event_mask = event_mask;
- if (GTK_BIN (viewport)->child)
- {
- child_requisition = >K_WIDGET (GTK_BIN (viewport)->child)->requisition;
- attributes.width = child_requisition->width;
- attributes.height = child_requisition->height;
- }
+ priv->bin_window = gdk_window_new (priv->view_window, &attributes, attributes_mask);
+ gtk_widget_register_window (widget, priv->bin_window);
- widget->window = gdk_window_new (viewport->view_window, &attributes, attributes_mask);
- gdk_window_set_user_data (widget->window, viewport);
+ child = gtk_bin_get_child (bin);
+ if (child)
+ gtk_widget_set_parent_window (child, priv->bin_window);
- widget->style = gtk_style_attach (widget->style, viewport->main_window);
- gtk_style_set_background (widget->style, viewport->main_window, GTK_STATE_NORMAL);
- gtk_style_set_background (widget->style, widget->window, GTK_STATE_NORMAL);
-
- gdk_window_show (widget->window);
- gdk_window_show (viewport->view_window);
+ context = gtk_widget_get_style_context (widget);
+ gtk_style_context_set_background (context, window);
+ gtk_style_context_set_background (context, priv->bin_window);
+
+ gdk_window_show (priv->bin_window);
+ gdk_window_show (priv->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);
- GTK_WIDGET_UNSET_FLAGS (widget, GTK_REALIZED | GTK_MAPPED);
+ GtkViewport *viewport = GTK_VIEWPORT (widget);
+ GtkViewportPrivate *priv = viewport->priv;
- gtk_style_detach (widget->style);
+ gtk_widget_unregister_window (widget, priv->view_window);
+ gdk_window_destroy (priv->view_window);
+ priv->view_window = NULL;
- gdk_window_destroy (widget->window);
- gdk_window_destroy (viewport->view_window);
- gdk_window_destroy (viewport->main_window);
+ gtk_widget_unregister_window (widget, priv->bin_window);
+ gdk_window_destroy (priv->bin_window);
+ priv->bin_window = NULL;
- widget->window = NULL;
- viewport->view_window = NULL;
- viewport->main_window = NULL;
+ GTK_WIDGET_CLASS (gtk_viewport_parent_class)->unrealize (widget);
}
-static void
-gtk_viewport_paint (GtkWidget *widget,
- GdkRectangle *area)
+static gint
+gtk_viewport_draw (GtkWidget *widget,
+ cairo_t *cr)
{
- GtkViewport *viewport;
- GtkStateType state;
- gint x, y;
+ GtkViewport *viewport = GTK_VIEWPORT (widget);
+ GtkViewportPrivate *priv = viewport->priv;
+ GtkStyleContext *context;
+ int x, y;
- g_return_if_fail (widget != NULL);
- g_return_if_fail (GTK_IS_VIEWPORT (widget));
- g_return_if_fail (area != NULL);
+ context = gtk_widget_get_style_context (widget);
- if (GTK_WIDGET_DRAWABLE (widget))
+ if (gtk_cairo_should_draw_window (cr, gtk_widget_get_window (widget)) &&
+ priv->shadow_type != GTK_SHADOW_NONE)
{
- viewport = GTK_VIEWPORT (widget);
+ gtk_style_context_save (context);
+ gtk_style_context_add_class (context, GTK_STYLE_CLASS_FRAME);
- state = widget->state;
- if (!GTK_WIDGET_IS_SENSITIVE (widget))
- state = GTK_STATE_INSENSITIVE;
+ gtk_render_frame (context, cr, 0, 0,
+ gdk_window_get_width (gtk_widget_get_window (widget)),
+ gdk_window_get_height (gtk_widget_get_window (widget)));
- x = GTK_CONTAINER (viewport)->border_width;
- y = GTK_CONTAINER (viewport)->border_width;
-
- gtk_draw_shadow (widget->style, viewport->main_window,
- GTK_STATE_NORMAL, viewport->shadow_type,
- 0, 0, -1, -1);
+ gtk_style_context_restore (context);
}
-}
-
-static void
-gtk_viewport_draw (GtkWidget *widget,
- GdkRectangle *area)
-{
- GtkViewport *viewport;
- GtkBin *bin;
- GdkRectangle tmp_area;
- GdkRectangle child_area;
-
- 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_cairo_should_draw_window (cr, priv->view_window))
{
- viewport = GTK_VIEWPORT (widget);
- bin = GTK_BIN (widget);
-
- gtk_viewport_paint (widget, area);
-
- if (bin->child)
- {
- tmp_area = *area;
- tmp_area.x += viewport->hadjustment->value;
- tmp_area.y += viewport->vadjustment->value;
-
- if (gtk_widget_intersect (bin->child, &tmp_area, &child_area))
- gtk_widget_draw (bin->child, &child_area);
- }
+ /* This is a cute hack to ensure the contents of bin_window are
+ * restricted to where they are visible. We only need to do this
+ * clipping when called via gtk_widget_draw() and not in expose
+ * events. And when that happens every window (including this one)
+ * should be drawn.
+ */
+ gdk_window_get_position (priv->view_window, &x, &y);
+ cairo_rectangle (cr, x, y,
+ gdk_window_get_width (priv->view_window),
+ gdk_window_get_height (priv->view_window));
+ cairo_clip (cr);
}
-}
-
-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))
+ if (gtk_cairo_should_draw_window (cr, priv->bin_window))
{
- viewport = GTK_VIEWPORT (widget);
- bin = GTK_BIN (widget);
+ gdk_window_get_position (priv->bin_window, &x, &y);
+ gtk_render_background (context, cr, x, y,
+ gdk_window_get_width (priv->bin_window),
+ gdk_window_get_height (priv->bin_window));
- if (event->window == viewport->main_window)
- gtk_viewport_paint (widget, &event->area);
-
- child_event = *event;
- if (bin->child &&
- 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)->draw (widget, cr);
}
return FALSE;
}
static void
-gtk_viewport_size_request (GtkWidget *widget,
- GtkRequisition *requisition)
+gtk_viewport_add (GtkContainer *container,
+ GtkWidget *child)
{
- GtkViewport *viewport;
- GtkBin *bin;
+ GtkBin *bin = GTK_BIN (container);
+ GtkViewport *viewport = GTK_VIEWPORT (bin);
+ GtkViewportPrivate *priv = viewport->priv;
- g_return_if_fail (widget != NULL);
- g_return_if_fail (GTK_IS_VIEWPORT (widget));
- g_return_if_fail (requisition != NULL);
+ g_return_if_fail (gtk_bin_get_child (bin) == NULL);
- viewport = GTK_VIEWPORT (widget);
- bin = GTK_BIN (widget);
+ gtk_widget_set_parent_window (child, priv->bin_window);
- 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);
+ GTK_CONTAINER_CLASS (gtk_viewport_parent_class)->add (container, child);
}
static void
gtk_viewport_size_allocate (GtkWidget *widget,
GtkAllocation *allocation)
{
- GtkViewport *viewport;
- GtkBin *bin;
+ GtkAllocation widget_allocation;
+ GtkViewport *viewport = GTK_VIEWPORT (widget);
+ GtkViewportPrivate *priv = viewport->priv;
+ GtkBin *bin = GTK_BIN (widget);
+ guint border_width;
+ GtkAdjustment *hadjustment = priv->hadjustment;
+ GtkAdjustment *vadjustment = priv->vadjustment;
GtkAllocation child_allocation;
- gint hval, vval;
+ GtkWidget *child;
- g_return_if_fail (widget != NULL);
- g_return_if_fail (GTK_IS_VIEWPORT (widget));
- g_return_if_fail (allocation != NULL);
+ border_width = gtk_container_get_border_width (GTK_CONTAINER (widget));
- widget->allocation = *allocation;
- viewport = GTK_VIEWPORT (widget);
- bin = GTK_BIN (widget);
+ /* If our size changed, and we have a shadow, queue a redraw on widget->window to
+ * redraw the shadow correctly.
+ */
+ gtk_widget_get_allocation (widget, &widget_allocation);
+ if (gtk_widget_get_mapped (widget) &&
+ priv->shadow_type != GTK_SHADOW_NONE &&
+ (widget_allocation.width != allocation->width ||
+ widget_allocation.height != allocation->height))
+ gdk_window_invalidate_rect (gtk_widget_get_window (widget), NULL, FALSE);
- child_allocation.x = GTK_WIDGET (viewport)->style->klass->xthickness;
- child_allocation.width = allocation->width - child_allocation.x * 2;
+ gtk_widget_set_allocation (widget, allocation);
- child_allocation.y = GTK_WIDGET (viewport)->style->klass->ythickness;
- child_allocation.height = allocation->height - child_allocation.y * 2;
+ g_object_freeze_notify (G_OBJECT (hadjustment));
+ g_object_freeze_notify (G_OBJECT (vadjustment));
- if (GTK_WIDGET_REALIZED (widget))
+ viewport_set_hadjustment_values (viewport);
+ viewport_set_vadjustment_values (viewport);
+
+ child_allocation.x = 0;
+ child_allocation.y = 0;
+ child_allocation.width = gtk_adjustment_get_upper (hadjustment);
+ child_allocation.height = gtk_adjustment_get_upper (vadjustment);
+ if (gtk_widget_get_realized (widget))
{
- gdk_window_move_resize (viewport->main_window,
- allocation->x + GTK_CONTAINER (viewport)->border_width,
- allocation->y + GTK_CONTAINER (viewport)->border_width,
- allocation->width - GTK_CONTAINER (viewport)->border_width * 2,
- allocation->height - GTK_CONTAINER (viewport)->border_width * 2);
-
- gdk_window_move_resize (viewport->view_window,
- child_allocation.x,
- child_allocation.y,
- child_allocation.width,
- child_allocation.height);
- }
+ GtkAllocation view_allocation;
- viewport->hadjustment->page_size = child_allocation.width;
- viewport->hadjustment->page_increment = viewport->hadjustment->page_size / 2;
- viewport->hadjustment->step_increment = 10;
+ gdk_window_move_resize (gtk_widget_get_window (widget),
+ 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 (priv->view_window,
+ view_allocation.x,
+ view_allocation.y,
+ view_allocation.width,
+ view_allocation.height);
+ gdk_window_move_resize (priv->bin_window,
+ - gtk_adjustment_get_value (hadjustment),
+ - gtk_adjustment_get_value (vadjustment),
+ child_allocation.width,
+ child_allocation.height);
+ }
- viewport->vadjustment->page_size = child_allocation.height;
- viewport->vadjustment->page_increment = viewport->vadjustment->page_size / 2;
- viewport->vadjustment->step_increment = 10;
+ child = gtk_bin_get_child (bin);
+ if (child && gtk_widget_get_visible (child))
+ gtk_widget_size_allocate (child, &child_allocation);
- hval = viewport->hadjustment->value;
- vval = viewport->vadjustment->value;
+ g_object_thaw_notify (G_OBJECT (hadjustment));
+ g_object_thaw_notify (G_OBJECT (vadjustment));
+}
- if (bin->child && GTK_WIDGET_VISIBLE (bin->child))
+static void
+gtk_viewport_adjustment_value_changed (GtkAdjustment *adjustment,
+ gpointer data)
+{
+ GtkViewport *viewport = GTK_VIEWPORT (data);
+ GtkViewportPrivate *priv = viewport->priv;
+ GtkBin *bin = GTK_BIN (data);
+ GtkWidget *child;
+
+ child = gtk_bin_get_child (bin);
+ if (child && gtk_widget_get_visible (child) &&
+ gtk_widget_get_realized (GTK_WIDGET (viewport)))
{
- 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);
+ GtkAdjustment *hadjustment = priv->hadjustment;
+ GtkAdjustment *vadjustment = priv->vadjustment;
+ gint old_x, old_y;
+ gint new_x, new_y;
- viewport->vadjustment->lower = 0;
- viewport->vadjustment->upper = MAX (bin->child->requisition.height,
- child_allocation.height);
+ gdk_window_get_position (priv->bin_window, &old_x, &old_y);
+ new_x = - gtk_adjustment_get_value (hadjustment);
+ new_y = - gtk_adjustment_get_value (vadjustment);
- vval = CLAMP (vval, 0,
- viewport->vadjustment->upper -
- viewport->vadjustment->page_size);
+ if (new_x != old_x || new_y != old_y)
+ gdk_window_move (priv->bin_window, new_x, new_y);
}
+}
- 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);
+static void
+gtk_viewport_style_updated (GtkWidget *widget)
+{
+ GTK_WIDGET_CLASS (gtk_viewport_parent_class)->style_updated (widget);
+
+ if (gtk_widget_get_realized (widget) &&
+ gtk_widget_get_has_window (widget))
+ {
+ GtkStyleContext *context;
+ GtkViewport *viewport = GTK_VIEWPORT (widget);
+ GtkViewportPrivate *priv = viewport->priv;
+
+ context = gtk_widget_get_style_context (widget);
+ gtk_style_context_set_background (context, priv->bin_window);
+ gtk_style_context_set_background (context, gtk_widget_get_window (widget));
+ }
+}
- gdk_window_resize (widget->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)
+static void
+gtk_viewport_get_preferred_size (GtkWidget *widget,
+ GtkOrientation orientation,
+ gint *minimum_size,
+ gint *natural_size)
+{
+ GtkViewport *viewport = GTK_VIEWPORT (widget);
+ GtkViewportPrivate *priv = viewport->priv;
+ GtkStyleContext *context;
+ GtkStateFlags state;
+ GtkBorder padding, border;
+ GtkWidget *child;
+ gint child_min, child_nat;
+ gint minimum, natural;
+
+ child = gtk_bin_get_child (GTK_BIN (widget));
+
+ /* XXX This should probably be (border_width * 2); but GTK+ has
+ * been doing this with a single border for a while now...
+ */
+ minimum = gtk_container_get_border_width (GTK_CONTAINER (widget));
+
+ context = gtk_widget_get_style_context (GTK_WIDGET (widget));
+ state = gtk_widget_get_state_flags (GTK_WIDGET (widget));
+ gtk_style_context_get_padding (context, state, &padding);
+
+ if (priv->shadow_type != GTK_SHADOW_NONE)
{
- viewport->vadjustment->value = vval;
- gtk_signal_emit_by_name (GTK_OBJECT (viewport->vadjustment), "value_changed");
+ gtk_style_context_get_border (context, state, &border);
+
+ if (orientation == GTK_ORIENTATION_HORIZONTAL)
+ minimum += border.left + border.right;
+ else
+ minimum += border.top + border.bottom;
}
-}
-static gint
-gtk_viewport_need_resize (GtkContainer *container)
-{
- GtkBin *bin;
+ if (orientation == GTK_ORIENTATION_HORIZONTAL)
+ minimum += padding.left + padding.right;
+ else
+ minimum += padding.top + padding.bottom;
- g_return_val_if_fail (container != NULL, FALSE);
- g_return_val_if_fail (GTK_IS_VIEWPORT (container), FALSE);
+ natural = minimum;
- if (GTK_WIDGET_REALIZED (container))
+ if (child && gtk_widget_get_visible (child))
{
- bin = GTK_BIN (container);
+ if (orientation == GTK_ORIENTATION_HORIZONTAL)
+ gtk_widget_get_preferred_width (child, &child_min, &child_nat);
+ else
+ gtk_widget_get_preferred_height (child, &child_min, &child_nat);
- gtk_widget_size_request (bin->child, &bin->child->requisition);
-
- gtk_widget_size_allocate (GTK_WIDGET (container),
- &(GTK_WIDGET (container)->allocation));
+ minimum += child_min;
+ natural += child_nat;
}
- return FALSE;
+ if (minimum_size)
+ *minimum_size = minimum;
+
+ if (natural_size)
+ *natural_size = natural;
}
static void
-gtk_viewport_adjustment_changed (GtkAdjustment *adjustment,
- gpointer data)
+gtk_viewport_get_preferred_width (GtkWidget *widget,
+ gint *minimum_size,
+ gint *natural_size)
{
- 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);
+ gtk_viewport_get_preferred_size (widget, GTK_ORIENTATION_HORIZONTAL, minimum_size, natural_size);
}
static void
-gtk_viewport_adjustment_value_changed (GtkAdjustment *adjustment,
- gpointer data)
+gtk_viewport_get_preferred_height (GtkWidget *widget,
+ gint *minimum_size,
+ gint *natural_size)
{
- 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 (GTK_WIDGET (viewport)->window,
- child_allocation.x,
- child_allocation.y);
- }
+ gtk_viewport_get_preferred_size (widget, GTK_ORIENTATION_VERTICAL, minimum_size, natural_size);
}