* GTK+ at ftp://ftp.gtk.org/pub/gtk/.
*/
-#include "gtksignal.h"
+#include "config.h"
#include "gtkviewport.h"
#include "gtkintl.h"
+#include "gtkmarshalers.h"
+#include "gtktypeutils.h"
+#include "gtkprivate.h"
+
+
+/**
+ * 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
+ * #GtkTable, #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.
+ * The convenience function gtk_scrolled_window_add_with_viewport() does
+ * exactly this, 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;
+};
enum {
PROP_0,
};
-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 (GObject *object);
static void gtk_viewport_set_property (GObject *object,
guint prop_id,
const GValue *value,
static void gtk_viewport_set_scroll_adjustments (GtkViewport *viewport,
GtkAdjustment *hadjustment,
GtkAdjustment *vadjustment);
+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 gint gtk_viewport_expose (GtkWidget *widget,
- GdkEventExpose *event);
+static gint gtk_viewport_draw (GtkWidget *widget,
+ cairo_t *cr);
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 void gtk_viewport_style_set (GtkWidget *widget,
+ GtkStyle *previous_style);
-static GtkBinClass *parent_class;
+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);
-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;
-}
+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_TYPE_BIN);
+ 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->destroy = gtk_viewport_destroy;
widget_class->realize = gtk_viewport_realize;
widget_class->unrealize = gtk_viewport_unrealize;
- widget_class->expose_event = gtk_viewport_expose;
- widget_class->size_request = gtk_viewport_size_request;
+ widget_class->draw = gtk_viewport_draw;
widget_class->size_allocate = gtk_viewport_size_allocate;
widget_class->style_set = gtk_viewport_style_set;
+ widget_class->get_preferred_width = gtk_viewport_get_preferred_width;
+ widget_class->get_preferred_height = gtk_viewport_get_preferred_height;
container_class->add = gtk_viewport_add;
g_object_class_install_property (gobject_class,
PROP_HADJUSTMENT,
g_param_spec_object ("hadjustment",
- _("Horizontal adjustment"),
- _("The GtkAdjustment that determines the values of the horizontal position for this viewport."),
+ P_("Horizontal adjustment"),
+ P_("The GtkAdjustment that determines the values of the horizontal position for this viewport"),
GTK_TYPE_ADJUSTMENT,
- G_PARAM_READWRITE));
+ GTK_PARAM_READWRITE | G_PARAM_CONSTRUCT));
g_object_class_install_property (gobject_class,
PROP_VADJUSTMENT,
g_param_spec_object ("vadjustment",
- _("Vertical adjustment"),
- _("The GtkAdjustment that determines the values of the vertical position for this viewport."),
+ P_("Vertical adjustment"),
+ P_("The GtkAdjustment that determines the values of the vertical position for this viewport"),
GTK_TYPE_ADJUSTMENT,
- G_PARAM_READWRITE));
+ GTK_PARAM_READWRITE | G_PARAM_CONSTRUCT));
g_object_class_install_property (gobject_class,
PROP_SHADOW_TYPE,
- g_param_spec_enum ("shadow_type",
- _("Shadow type"),
- _("Determines how the shadowed box around the viewport is drawn."),
+ 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,
- G_PARAM_READWRITE));
-
+ 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 =
- gtk_signal_new ("set_scroll_adjustments",
- GTK_RUN_LAST,
- GTK_CLASS_TYPE (object_class),
- GTK_SIGNAL_OFFSET (GtkViewportClass, set_scroll_adjustments),
- gtk_marshal_VOID__OBJECT_OBJECT,
- GTK_TYPE_NONE, 2, GTK_TYPE_ADJUSTMENT, GTK_TYPE_ADJUSTMENT);
+ 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);
+
+ g_type_class_add_private (class, sizeof (GtkViewportPrivate));
}
static void
GValue *value,
GParamSpec *pspec)
{
- GtkViewport *viewport;
-
- viewport = GTK_VIEWPORT (object);
+ GtkViewport *viewport = GTK_VIEWPORT (object);
+ GtkViewportPrivate *priv = viewport->priv;
switch (prop_id)
{
case PROP_HADJUSTMENT:
- g_value_set_object (value, G_OBJECT (viewport->hadjustment));
+ g_value_set_object (value, priv->hadjustment);
break;
case PROP_VADJUSTMENT:
- g_value_set_object (value, G_OBJECT (viewport->vadjustment));
+ g_value_set_object (value, priv->vadjustment);
break;
case PROP_SHADOW_TYPE:
- g_value_set_enum (value, viewport->shadow_type);
+ g_value_set_enum (value, priv->shadow_type);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
static void
gtk_viewport_init (GtkViewport *viewport)
{
- GTK_WIDGET_UNSET_FLAGS (viewport, GTK_NO_WINDOW);
+ 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);
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;
+
+ priv->shadow_type = GTK_SHADOW_IN;
+ priv->view_window = NULL;
+ priv->bin_window = NULL;
+ priv->hadjustment = NULL;
+ priv->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)
{
GtkWidget *viewport;
- viewport = gtk_widget_new (GTK_TYPE_VIEWPORT,
+ viewport = g_object_new (GTK_TYPE_VIEWPORT,
"hadjustment", hadjustment,
"vadjustment", vadjustment,
NULL);
return viewport;
}
+#define ADJUSTMENT_POINTER(viewport, orientation) \
+ (((orientation) == GTK_ORIENTATION_HORIZONTAL) ? \
+ &(viewport)->priv->hadjustment : &(viewport)->priv->vadjustment)
+
static void
-gtk_viewport_destroy (GtkObject *object)
+viewport_disconnect_adjustment (GtkViewport *viewport,
+ GtkOrientation orientation)
{
- GtkViewport *viewport = GTK_VIEWPORT (object);
+ GtkAdjustment **adjustmentp = ADJUSTMENT_POINTER (viewport, orientation);
- if (viewport->hadjustment)
+ if (*adjustmentp)
{
- gtk_signal_disconnect_by_data (GTK_OBJECT (viewport->hadjustment), viewport);
- gtk_object_unref (GTK_OBJECT (viewport->hadjustment));
- viewport->hadjustment = NULL;
- }
- if (viewport->vadjustment)
- {
- gtk_signal_disconnect_by_data (GTK_OBJECT (viewport->vadjustment), viewport);
- gtk_object_unref (GTK_OBJECT (viewport->vadjustment));
- viewport->vadjustment = NULL;
+ 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);
+
+ viewport_disconnect_adjustment (viewport, GTK_ORIENTATION_HORIZONTAL);
+ viewport_disconnect_adjustment (viewport, GTK_ORIENTATION_VERTICAL);
+
+ G_OBJECT_CLASS (gtk_viewport_parent_class)->finalize (object);
+}
- GTK_OBJECT_CLASS (parent_class)->destroy (object);
+static void
+gtk_viewport_destroy (GtkWidget *widget)
+{
+ GtkViewport *viewport = GTK_VIEWPORT (widget);
+
+ viewport_disconnect_adjustment (viewport, GTK_ORIENTATION_HORIZONTAL);
+ viewport_disconnect_adjustment (viewport, GTK_ORIENTATION_VERTICAL);
+
+ GTK_WIDGET_CLASS (gtk_viewport_parent_class)->destroy (widget);
}
+/**
+ * gtk_viewport_get_hadjustment:
+ * @viewport: a #GtkViewport.
+ *
+ * Returns the horizontal adjustment of the viewport.
+ *
+ * Return value: (transfer none): the horizontal adjustment of @viewport.
+ **/
GtkAdjustment*
gtk_viewport_get_hadjustment (GtkViewport *viewport)
{
+ GtkViewportPrivate *priv;
+
g_return_val_if_fail (GTK_IS_VIEWPORT (viewport), NULL);
- if (!viewport->hadjustment)
+ priv = viewport->priv;
+
+ if (!priv->hadjustment)
gtk_viewport_set_hadjustment (viewport, NULL);
- return viewport->hadjustment;
+ return 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.
+ **/
GtkAdjustment*
gtk_viewport_get_vadjustment (GtkViewport *viewport)
{
+ GtkViewportPrivate *priv;
+
g_return_val_if_fail (GTK_IS_VIEWPORT (viewport), NULL);
- if (!viewport->vadjustment)
+ priv = viewport->priv;
+
+ if (!priv->vadjustment)
gtk_viewport_set_vadjustment (viewport, NULL);
- return viewport->vadjustment;
+ return priv->vadjustment;
}
-void
-gtk_viewport_set_hadjustment (GtkViewport *viewport,
- GtkAdjustment *adjustment)
+static void
+viewport_get_view_allocation (GtkViewport *viewport,
+ GtkAllocation *view_allocation)
{
- g_return_if_fail (GTK_IS_VIEWPORT (viewport));
- if (adjustment)
- g_return_if_fail (GTK_IS_ADJUSTMENT (adjustment));
+ GtkViewportPrivate *priv = viewport->priv;
+ GtkStyle *style;
+ GtkWidget *widget = GTK_WIDGET (viewport);
+ GtkAllocation allocation;
+ 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;
+
+ if (priv->shadow_type != GTK_SHADOW_NONE)
+ {
+ style = gtk_widget_get_style (widget);
+ view_allocation->x = style->xthickness;
+ view_allocation->y = 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);
+ GtkWidget *child;
+ 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;
+
+ child = gtk_bin_get_child (bin);
+ if (child && gtk_widget_get_visible (child))
+ {
+ gint minimum_width;
- if (viewport->hadjustment && viewport->hadjustment != adjustment)
+ gtk_widget_get_preferred_width_for_height (child,
+ view_allocation.height,
+ &minimum_width,
+ NULL);
+ hadjustment->upper = MAX (minimum_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);
+ GtkWidget *child;
+
+ 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;
+
+ child = gtk_bin_get_child (bin);
+ if (child && gtk_widget_get_visible (child))
{
- gtk_signal_disconnect_by_data (GTK_OBJECT (viewport->hadjustment), viewport);
- gtk_object_unref (GTK_OBJECT (viewport->hadjustment));
- viewport->hadjustment = NULL;
+ gint minimum_height;
+
+ gtk_widget_get_preferred_height_for_width (child,
+ view_allocation.width,
+ &minimum_height,
+ NULL);
+
+ vadjustment->upper = MAX (minimum_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 (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);
- }
+ if (orientation == GTK_ORIENTATION_HORIZONTAL)
+ viewport_set_hadjustment_values (viewport, &value_changed);
+ else
+ viewport_set_vadjustment_values (viewport, &value_changed);
- g_object_notify (G_OBJECT (viewport), "hadjustment");
+ 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_vadjustment (GtkViewport *viewport,
+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));
- if (viewport->vadjustment && viewport->vadjustment != adjustment)
- {
- gtk_signal_disconnect_by_data (GTK_OBJECT (viewport->vadjustment), viewport);
- gtk_object_unref (GTK_OBJECT (viewport->vadjustment));
- viewport->vadjustment = NULL;
- }
+ viewport_set_adjustment (viewport, GTK_ORIENTATION_HORIZONTAL, adjustment);
- if (!adjustment)
- adjustment = GTK_ADJUSTMENT (gtk_adjustment_new (0.0, 0.0, 0.0,
- 0.0, 0.0, 0.0));
+ g_object_notify (G_OBJECT (viewport), "hadjustment");
+}
- 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);
- }
+/**
+ * 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 (GTK_IS_VIEWPORT (viewport));
+ if (adjustment)
+ g_return_if_fail (GTK_IS_ADJUSTMENT (adjustment));
+
+ viewport_set_adjustment (viewport, GTK_ORIENTATION_VERTICAL, adjustment);
g_object_notify (G_OBJECT (viewport), "vadjustment");
}
GtkAdjustment *hadjustment,
GtkAdjustment *vadjustment)
{
- if (viewport->hadjustment != hadjustment)
- gtk_viewport_set_hadjustment (viewport, hadjustment);
- if (viewport->vadjustment != vadjustment)
- gtk_viewport_set_vadjustment (viewport, 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)
{
+ 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");
+ g_object_notify (G_OBJECT (viewport), "shadow-type");
+ }
}
/**
*
* Gets the shadow type of the #GtkViewport. See
* gtk_viewport_set_shadow_type().
-
+ *
* Return value: the shadow type
**/
GtkShadowType
{
g_return_val_if_fail (GTK_IS_VIEWPORT (viewport), GTK_SHADOW_NONE);
- return viewport->shadow_type;
+ return viewport->priv->shadow_type;
+}
+
+/**
+ * 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);
+
+ return viewport->priv->bin_window;
+}
+
+/**
+ * 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)
+{
+ g_return_val_if_fail (GTK_IS_VIEWPORT (viewport), NULL);
+
+ return viewport->priv->view_window;
}
static void
gtk_viewport_realize (GtkWidget *widget)
{
- GtkBin *bin;
- GtkViewport *viewport;
+ GtkViewport *viewport = GTK_VIEWPORT (widget);
+ GtkViewportPrivate *priv = viewport->priv;
+ GtkBin *bin = GTK_BIN (widget);
+ GtkAdjustment *hadjustment = gtk_viewport_get_hadjustment (viewport);
+ GtkAdjustment *vadjustment = gtk_viewport_get_vadjustment (viewport);
+ GtkAllocation allocation;
+ GtkAllocation view_allocation;
+ GtkStyle *style;
+ GtkWidget *child;
+ GdkWindow *window;
GdkWindowAttr attributes;
gint attributes_mask;
gint event_mask;
- gint border_width;
+ guint border_width;
- g_return_if_fail (GTK_IS_VIEWPORT (widget));
+ border_width = gtk_container_get_border_width (GTK_CONTAINER (widget));
- border_width = GTK_CONTAINER (widget)->border_width;
+ gtk_widget_set_realized (widget, TRUE);
- bin = GTK_BIN (widget);
- viewport = GTK_VIEWPORT (widget);
- GTK_WIDGET_SET_FLAGS (widget, GTK_REALIZED);
+ gtk_widget_get_allocation (widget, &allocation);
- 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.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);
event_mask = gtk_widget_get_events (widget) | GDK_EXPOSURE_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_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL;
- widget->window = gdk_window_new (gtk_widget_get_parent_window (widget),
- &attributes, attributes_mask);
- gdk_window_set_user_data (widget->window, viewport);
+ window = gdk_window_new (gtk_widget_get_parent_window (widget),
+ &attributes, attributes_mask);
+ gtk_widget_set_window (widget, window);
+ gdk_window_set_user_data (window, viewport);
- if (viewport->shadow_type != GTK_SHADOW_NONE)
- {
- attributes.x = widget->style->xthickness;
- attributes.y = widget->style->ythickness;
- }
- else
- {
- attributes.x = 0;
- attributes.y = 0;
- }
-
- attributes.width = MAX (1, (gint)widget->allocation.width - attributes.x * 2 - border_width * 2);
- attributes.height = MAX (1, (gint)widget->allocation.height - attributes.y * 2 - border_width * 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;
+ priv->view_window = gdk_window_new (window,
+ &attributes, attributes_mask);
+ gdk_window_set_user_data (priv->view_window, viewport);
- if (bin->child)
- {
- attributes.width = viewport->hadjustment->upper;
- attributes.height = viewport->vadjustment->upper;
- }
+ 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);
+ priv->bin_window = gdk_window_new (priv->view_window, &attributes, attributes_mask);
+ gdk_window_set_user_data (priv->bin_window, viewport);
- if (bin->child)
- gtk_widget_set_parent_window (bin->child, viewport->bin_window);
+ child = gtk_bin_get_child (bin);
+ if (child)
+ gtk_widget_set_parent_window (child, priv->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_widget_style_attach (widget);
+ style = gtk_widget_get_style (widget);
+ gtk_style_set_background (style, window, GTK_STATE_NORMAL);
+ gtk_style_set_background (style, priv->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);
+ 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 (GTK_IS_VIEWPORT (widget));
-
- viewport = GTK_VIEWPORT (widget);
+ GtkViewport *viewport = GTK_VIEWPORT (widget);
+ GtkViewportPrivate *priv = viewport->priv;
- gdk_window_set_user_data (viewport->view_window, NULL);
- gdk_window_destroy (viewport->view_window);
- viewport->view_window = NULL;
+ gdk_window_set_user_data (priv->view_window, NULL);
+ gdk_window_destroy (priv->view_window);
+ priv->view_window = NULL;
- gdk_window_set_user_data (viewport->bin_window, NULL);
- gdk_window_destroy (viewport->bin_window);
- viewport->bin_window = NULL;
+ gdk_window_set_user_data (priv->bin_window, NULL);
+ gdk_window_destroy (priv->bin_window);
+ priv->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)
+static gint
+gtk_viewport_draw (GtkWidget *widget,
+ cairo_t *cr)
{
- GtkViewport *viewport;
-
- g_return_if_fail (GTK_IS_VIEWPORT (widget));
- g_return_if_fail (area != NULL);
+ GtkViewport *viewport = GTK_VIEWPORT (widget);
+ GtkViewportPrivate *priv = viewport->priv;
+ int x, y;
- if (GTK_WIDGET_DRAWABLE (widget))
+ if (gtk_cairo_should_draw_window (cr, gtk_widget_get_window (widget)))
{
- viewport = GTK_VIEWPORT (widget);
-
- gtk_draw_shadow (widget->style, widget->window,
- GTK_STATE_NORMAL, viewport->shadow_type,
- 0, 0, -1, -1);
+ gtk_paint_shadow (gtk_widget_get_style (widget),
+ cr,
+ GTK_STATE_NORMAL, priv->shadow_type,
+ widget, "viewport",
+ 0, 0,
+ gdk_window_get_width (gtk_widget_get_window (widget)),
+ gdk_window_get_height (gtk_widget_get_window (widget)));
}
-}
-
-static gint
-gtk_viewport_expose (GtkWidget *widget,
- GdkEventExpose *event)
-{
- GtkViewport *viewport;
- GtkBin *bin;
- GdkEventExpose child_event;
-
- 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);
-
- 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);
-
- (* GTK_WIDGET_CLASS (parent_class)->expose_event) (widget, event);
- }
-
-
+ gdk_window_get_position (priv->bin_window, &x, &y);
+ gtk_paint_flat_box (gtk_widget_get_style (widget), cr,
+ GTK_STATE_NORMAL, GTK_SHADOW_NONE,
+ widget, "viewportbin",
+ x, y,
+ gdk_window_get_width (priv->bin_window),
+ gdk_window_get_height (priv->bin_window));
+
+ GTK_WIDGET_CLASS (gtk_viewport_parent_class)->draw (widget, cr);
}
return FALSE;
gtk_viewport_add (GtkContainer *container,
GtkWidget *child)
{
- GtkBin *bin;
+ GtkBin *bin = GTK_BIN (container);
+ GtkViewport *viewport = GTK_VIEWPORT (bin);
+ GtkViewportPrivate *priv = viewport->priv;
- g_return_if_fail (GTK_IS_VIEWPORT (container));
- g_return_if_fail (child != NULL);
+ g_return_if_fail (gtk_bin_get_child (bin) == NULL);
- bin = GTK_BIN (container);
- g_return_if_fail (bin->child == NULL);
+ gtk_widget_set_parent_window (child, priv->bin_window);
- 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;
- GtkRequisition child_requisition;
-
- 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->xthickness) * 2;
-
- requisition->height = (GTK_CONTAINER (widget)->border_width * 2 +
- GTK_WIDGET (widget)->style->ythickness) * 2;
-
- if (bin->child && GTK_WIDGET_VISIBLE (bin->child))
- {
- gtk_widget_size_request (bin->child, &child_requisition);
- requisition->width += child_requisition.width;
- requisition->height += child_requisition.height;
- }
+ GTK_CONTAINER_CLASS (gtk_viewport_parent_class)->add (container, child);
}
static void
gtk_viewport_size_allocate (GtkWidget *widget,
GtkAllocation *allocation)
{
+ GtkAllocation widget_allocation;
GtkViewport *viewport = GTK_VIEWPORT (widget);
+ GtkViewportPrivate *priv = viewport->priv;
GtkBin *bin = GTK_BIN (widget);
+ guint 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 = GTK_CONTAINER (widget)->border_width;
+ GtkWidget *child;
- /* demand creation */
- if (!viewport->hadjustment)
- gtk_viewport_set_hadjustment (viewport, NULL);
- if (!viewport->vadjustment)
- gtk_viewport_set_hadjustment (viewport, NULL);
+ border_width = gtk_container_get_border_width (GTK_CONTAINER (widget));
/* If our size changed, and we have a shadow, queue a redraw on widget->window to
* redraw the shadow correctly.
*/
- if (GTK_WIDGET_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;
+ 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);
+ gtk_widget_set_allocation (widget, allocation);
+
+ 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.width = hadjustment->upper;
+ child_allocation.height = vadjustment->upper;
+ if (gtk_widget_get_realized (widget))
{
- child_allocation.x = widget->style->xthickness;
- child_allocation.y = widget->style->ythickness;
- }
+ GtkAllocation view_allocation;
- 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,
+ 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);
-
- 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))
- {
- GtkRequisition child_requisition;
- gtk_widget_get_child_requisition (bin->child, &child_requisition);
- viewport->hadjustment->lower = 0;
- viewport->hadjustment->upper = MAX (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 (child_requisition.height,
- child_allocation.height);
-
- vval = CLAMP (vval, 0,
- viewport->vadjustment->upper -
- viewport->vadjustment->page_size);
+ 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,
+ - hadjustment->value,
+ - vadjustment->value,
+ child_allocation.width,
+ child_allocation.height);
}
- if (bin->child && GTK_WIDGET_VISIBLE (bin->child))
- {
- child_allocation.x = 0;
- child_allocation.y = 0;
+ child = gtk_bin_get_child (bin);
+ if (child && gtk_widget_get_visible (child))
+ gtk_widget_size_allocate (child, &child_allocation);
- child_allocation.width = viewport->hadjustment->upper;
- child_allocation.height = viewport->vadjustment->upper;
+ 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);
+}
- if (GTK_WIDGET_REALIZED (widget))
- gdk_window_resize (viewport->bin_window,
- child_allocation.width,
- child_allocation.height);
+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)))
+ {
+ GtkAdjustment *hadjustment = gtk_viewport_get_hadjustment (viewport);
+ GtkAdjustment *vadjustment = gtk_viewport_get_vadjustment (viewport);
+ gint old_x, old_y;
+ gint new_x, new_y;
- child_allocation.x = 0;
- child_allocation.y = 0;
- gtk_widget_size_allocate (bin->child, &child_allocation);
- }
+ gdk_window_get_position (priv->bin_window, &old_x, &old_y);
+ new_x = - hadjustment->value;
+ new_y = - vadjustment->value;
- 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");
+ if (new_x != old_x || new_y != old_y)
+ {
+ gdk_window_move (priv->bin_window, new_x, new_y);
+ gdk_window_process_updates (priv->bin_window, TRUE);
+ }
}
}
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 (GTK_IS_VIEWPORT (data));
-
- viewport = GTK_VIEWPORT (data);
+ if (gtk_widget_get_realized (widget) &&
+ gtk_widget_get_has_window (widget))
+ {
+ GtkStyle *style;
+ GtkViewport *viewport = GTK_VIEWPORT (widget);
+ GtkViewportPrivate *priv = viewport->priv;
+
+ style = gtk_widget_get_style (widget);
+ gtk_style_set_background (style, priv->bin_window, GTK_STATE_NORMAL);
+ gtk_style_set_background (style,
+ gtk_widget_get_window (widget),
+ gtk_widget_get_state (widget));
+ }
}
+
static void
-gtk_viewport_adjustment_value_changed (GtkAdjustment *adjustment,
- gpointer data)
+gtk_viewport_get_preferred_size (GtkWidget *widget,
+ GtkOrientation orientation,
+ gint *minimum_size,
+ gint *natural_size)
{
- GtkViewport *viewport;
- GtkBin *bin;
- GtkAllocation child_allocation;
+ GtkViewport *viewport = GTK_VIEWPORT (widget);
+ GtkViewportPrivate *priv = viewport->priv;
+ GtkStyle *style;
+ GtkWidget *child;
+ gint child_min, child_nat;
+ gint minimum, natural;
- g_return_if_fail (adjustment != NULL);
- g_return_if_fail (GTK_IS_VIEWPORT (data));
+ child = gtk_bin_get_child (GTK_BIN (widget));
- viewport = GTK_VIEWPORT (data);
- bin = GTK_BIN (data);
+ /* 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));
- if (bin->child && GTK_WIDGET_VISIBLE (bin->child))
+ if (priv->shadow_type != GTK_SHADOW_NONE)
{
- child_allocation.x = 0;
- child_allocation.y = 0;
+ style = gtk_widget_get_style (GTK_WIDGET (widget));
+ if (orientation == GTK_ORIENTATION_HORIZONTAL)
+ minimum += 2 * style->xthickness;
+ else
+ minimum += 2 * style->ythickness;
+ }
- if (viewport->hadjustment->lower != (viewport->hadjustment->upper -
- viewport->hadjustment->page_size))
- child_allocation.x = viewport->hadjustment->lower - viewport->hadjustment->value;
+ natural = minimum;
- if (viewport->vadjustment->lower != (viewport->vadjustment->upper -
- viewport->vadjustment->page_size))
- child_allocation.y = viewport->vadjustment->lower - viewport->vadjustment->value;
+ if (child && gtk_widget_get_visible (child))
+ {
+ 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);
- if (GTK_WIDGET_REALIZED (viewport))
- {
- gdk_window_move (viewport->bin_window,
- child_allocation.x,
- child_allocation.y);
-
- gdk_window_process_updates (viewport->bin_window, TRUE);
- }
+ minimum += child_min;
+ natural += child_nat;
}
+
+ if (minimum_size)
+ *minimum_size = minimum;
+
+ if (natural_size)
+ *natural_size = natural;
}
static void
-gtk_viewport_style_set (GtkWidget *widget,
- GtkStyle *previous_style)
+gtk_viewport_get_preferred_width (GtkWidget *widget,
+ gint *minimum_size,
+ gint *natural_size)
{
- 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);
- }
+ gtk_viewport_get_preferred_size (widget, GTK_ORIENTATION_HORIZONTAL, minimum_size, natural_size);
+}
+
+static void
+gtk_viewport_get_preferred_height (GtkWidget *widget,
+ gint *minimum_size,
+ gint *natural_size)
+{
+ gtk_viewport_get_preferred_size (widget, GTK_ORIENTATION_VERTICAL, minimum_size, natural_size);
}