HGKeeper

/* GTK - The GIMP Toolkit

* This library is free software; you can redistribute it and/or

* modify it under the terms of the GNU Library General Public

* License as published by the Free Software Foundation; either

* version 2 of the License, or (at your option) any later version.

* This library is distributed in the hope that it will be useful,

* but WITHOUT ANY WARRANTY; without even the implied warranty of

* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU

* Library General Public License for more details.

* You should have received a copy of the GNU Library General Public

* License along with this library; if not, write to the

* Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,

* Boston, MA 02111-1301, USA.

/* FIXME: GTK+ deprecated GTK_WIDGET_MAPPED/REALIZED, but don't provide

accessor functions yet. */

#undef GSEAL_ENABLE

#include "gtkticker.h"

#include <gtk/gtk.h>

/* These don't seem to be in a release yet. See BZ #69872 */

#define gtk_widget_is_mapped(x) GTK_WIDGET_MAPPED(x)

#define gtk_widget_is_realized(x) GTK_WIDGET_REALIZED(x)

#define gtk_widget_set_realized(x,y) do {\

if (y) \

GTK_WIDGET_SET_FLAGS(x, GTK_REALIZED); \

else \

GTK_WIDGET_UNSET_FLAGS(x, GTK_REALIZED); \

} while(0)

#define gtk_widget_set_mapped(x,y) do {\

if (y) \

GTK_WIDGET_SET_FLAGS(x, GTK_MAPPED); \

else \

GTK_WIDGET_UNSET_FLAGS(x, GTK_MAPPED); \

} while(0)

#if !GTK_CHECK_VERSION(2,18,0)

#define gtk_widget_get_visible(x) GTK_WIDGET_VISIBLE(x)

#if !GTK_CHECK_VERSION(2,14,0)

#define gtk_widget_get_window(x) x->window

#endif

static void gtk_ticker_compute_offsets (GtkTicker *ticker);

static void gtk_ticker_class_init (GtkTickerClass *klass);

static void gtk_ticker_init (GtkTicker *ticker);

static void gtk_ticker_map (GtkWidget *widget);

static void gtk_ticker_realize (GtkWidget *widget);

static void gtk_ticker_size_request (GtkWidget *widget,

GtkRequisition *requisition);

static void gtk_ticker_size_allocate (GtkWidget *widget,

GtkAllocation *allocation);

static void gtk_ticker_add_real (GtkContainer *container,

GtkWidget *widget);

static void gtk_ticker_remove_real (GtkContainer *container,

GtkWidget *widget);

static void gtk_ticker_forall (GtkContainer *container,

gboolean include_internals,

GtkCallback callback,

gpointer callback_data);

static GType gtk_ticker_child_type (GtkContainer *container);

static GtkContainerClass *parent_class = NULL;

GType gtk_ticker_get_type (void)

{

static GType ticker_type = 0;

ticker_type = g_type_from_name("GtkTicker");

if (!ticker_type)

{

static const GTypeInfo ticker_info =

{

sizeof(GtkTickerClass),

NULL,

(GClassInitFunc) gtk_ticker_class_init,

NULL,

sizeof(GtkTicker),

(GInstanceInitFunc) gtk_ticker_init,

NULL

};

ticker_type = g_type_register_static (GTK_TYPE_CONTAINER, "GtkTicker",

&ticker_info, 0);

}

/* kludge to re-initialise the class if it's already registered */

else if (parent_class == NULL) {

gtk_ticker_class_init((GtkTickerClass *)g_type_class_peek(ticker_type));

}

return ticker_type;

}

static void gtk_ticker_finalize(GObject *object) {

gtk_ticker_stop_scroll(GTK_TICKER(object));

G_OBJECT_CLASS(parent_class)->finalize(object);

}

static void gtk_ticker_class_init (GtkTickerClass *class)

{

GObjectClass *gobject_class;

GtkWidgetClass *widget_class;

GtkContainerClass *container_class;

gobject_class = (GObjectClass*) class;

widget_class = (GtkWidgetClass*) class;

container_class = (GtkContainerClass*) class;

parent_class = g_type_class_ref (GTK_TYPE_CONTAINER);

gobject_class->finalize = gtk_ticker_finalize;

widget_class->map = gtk_ticker_map;

widget_class->realize = gtk_ticker_realize;

widget_class->size_request = gtk_ticker_size_request;

widget_class->size_allocate = gtk_ticker_size_allocate;

container_class->add = gtk_ticker_add_real;

container_class->remove = gtk_ticker_remove_real;

container_class->forall = gtk_ticker_forall;

container_class->child_type = gtk_ticker_child_type;

}

static GType gtk_ticker_child_type (GtkContainer *container)

{

return GTK_TYPE_WIDGET;

}

static void gtk_ticker_init (GtkTicker *ticker)

{

#if GTK_CHECK_VERSION(2,18,0)

gtk_widget_set_has_window (GTK_WIDGET (ticker), TRUE);

#else

GTK_WIDGET_UNSET_FLAGS (ticker, GTK_NO_WINDOW);

#endif

ticker->interval = (guint) 200;

ticker->scootch = (guint) 2;

ticker->children = NULL;

ticker->timer = 0;

ticker->dirty = TRUE;

}

GtkWidget* gtk_ticker_new (void)

{

return GTK_WIDGET(g_object_new(GTK_TYPE_TICKER, NULL));

}

static void gtk_ticker_put (GtkTicker *ticker, GtkWidget *widget)

{

GtkTickerChild *child_info;

g_return_if_fail (ticker != NULL);

g_return_if_fail (GTK_IS_TICKER (ticker));

g_return_if_fail (widget != NULL);

child_info = g_new(GtkTickerChild, 1);

child_info->widget = widget;

child_info->x = 0;

gtk_widget_set_parent(widget, GTK_WIDGET (ticker));

ticker->children = g_list_append (ticker->children, child_info);

if (gtk_widget_is_realized (ticker))

gtk_widget_realize (widget);

if (gtk_widget_get_visible (GTK_WIDGET (ticker)) &&

gtk_widget_get_visible (widget))

{

if (gtk_widget_is_mapped (GTK_WIDGET (ticker)))

gtk_widget_map (widget);

gtk_widget_queue_resize (GTK_WIDGET (ticker));

}

void gtk_ticker_set_interval (GtkTicker *ticker, gint interval)

{

g_return_if_fail (ticker != NULL);

g_return_if_fail (GTK_IS_TICKER (ticker));

if ( interval < 0 )

interval = 200;

ticker->interval = interval;

}

guint gtk_ticker_get_interval (GtkTicker *ticker)

{

g_return_val_if_fail (ticker != NULL, -1);

g_return_val_if_fail (GTK_IS_TICKER (ticker), -1);

return ticker->interval;

}

void gtk_ticker_set_scootch (GtkTicker *ticker, gint scootch)

{

g_return_if_fail (ticker != NULL);

g_return_if_fail (GTK_IS_TICKER (ticker));

if (scootch <= 0)

scootch = 2;

ticker->scootch = scootch;

ticker->dirty = TRUE;

}

guint gtk_ticker_get_scootch (GtkTicker *ticker )

{

g_return_val_if_fail (ticker != NULL, -1);

g_return_val_if_fail (GTK_IS_TICKER (ticker), -1);

return ticker->scootch;

}

void gtk_ticker_set_spacing (GtkTicker *ticker, gint spacing )

{

g_return_if_fail (ticker != NULL);

g_return_if_fail (GTK_IS_TICKER (ticker));

if ( spacing < 0 )

spacing = 0;

ticker->spacing = spacing;

ticker->dirty = TRUE;

}

static int ticker_timeout(gpointer data)

{

GtkTicker *ticker = (GtkTicker *) data;

if (gtk_widget_get_visible (GTK_WIDGET (ticker)))

gtk_widget_queue_resize (GTK_WIDGET (ticker));

return( TRUE );

}

void gtk_ticker_start_scroll(GtkTicker *ticker)

{

g_return_if_fail (ticker != NULL);

g_return_if_fail (GTK_IS_TICKER (ticker));

if ( ticker->timer != 0 )

return;

ticker->timer = g_timeout_add(ticker->interval, ticker_timeout, ticker);

}

void gtk_ticker_stop_scroll(GtkTicker *ticker)

{

g_return_if_fail (ticker != NULL);

g_return_if_fail (GTK_IS_TICKER (ticker));

if ( ticker->timer == 0 )

return;

g_source_remove(ticker->timer);

ticker->timer = 0;

}

guint gtk_ticker_get_spacing (GtkTicker *ticker )

{

g_return_val_if_fail (ticker != NULL, -1);

g_return_val_if_fail (GTK_IS_TICKER (ticker), -1);

return ticker->spacing;

}

static void gtk_ticker_map (GtkWidget *widget)

{

GtkTicker *ticker;

GtkTickerChild *child;

GList *children;

g_return_if_fail (widget != NULL);

g_return_if_fail (GTK_IS_TICKER (widget));

gtk_widget_set_mapped (widget, TRUE);

ticker = GTK_TICKER (widget);

children = ticker->children;

while (children)

{

child = children->data;

children = children->next;

if (gtk_widget_get_visible (child->widget) &&

!gtk_widget_is_mapped (child->widget))

gtk_widget_map (child->widget);

}

gdk_window_show (gtk_widget_get_window (widget));

}

static void gtk_ticker_realize (GtkWidget *widget)

{

GdkWindowAttr attributes;

gint attributes_mask;

GdkWindow *window;

GtkStyle *style;

#if GTK_CHECK_VERSION(2,18,0)

GtkAllocation allocation;

#endif

g_return_if_fail (widget != NULL);

g_return_if_fail (GTK_IS_TICKER (widget));

gtk_widget_set_realized (widget, TRUE);

attributes.window_type = GDK_WINDOW_CHILD;

#if GTK_CHECK_VERSION(2,18,0)

gtk_widget_get_allocation (widget, &allocation);

attributes.x = allocation.x;

attributes.y = allocation.y;

attributes.width = allocation.width;

attributes.height = allocation.height;

#else

attributes.x = widget->allocation.x;

attributes.y = widget->allocation.y;

attributes.width = widget->allocation.width;

attributes.height = widget->allocation.height;

#endif

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);

attributes.event_mask |= GDK_EXPOSURE_MASK | GDK_BUTTON_PRESS_MASK;

attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP;

window = gdk_window_new (gtk_widget_get_parent_window (widget),

&attributes, attributes_mask);

#if GTK_CHECK_VERSION(2,18,0)

gtk_widget_set_window (widget, window);

#else

widget->window = window;

#endif

gdk_window_set_user_data (window, widget);

#if GTK_CHECK_VERSION(2,14,0)

style = gtk_widget_get_style (widget);

style = gtk_style_attach (style, window);

gtk_widget_set_style (widget, style);

#else

style = widget->style = gtk_style_attach (widget->style, window);

#endif

gtk_style_set_background (style, window, GTK_STATE_NORMAL);

}

static void gtk_ticker_size_request (GtkWidget *widget, GtkRequisition *requisition)

{

GtkTicker *ticker;

GtkTickerChild *child;

GList *children;

GtkRequisition child_requisition;

guint border_width;

g_return_if_fail (widget != NULL);

g_return_if_fail (GTK_IS_TICKER (widget));

g_return_if_fail (requisition != NULL);

ticker = GTK_TICKER (widget);

requisition->width = 0;

requisition->height = 0;

children = ticker->children;

while (children)

{

child = children->data;

children = children->next;

if (gtk_widget_get_visible (child->widget))

{

gtk_widget_size_request (child->widget, &child_requisition);

requisition->height = MAX (requisition->height,

child_requisition.height);

requisition->width += child_requisition.width + ticker->spacing;

}

if ( requisition->width > ticker->spacing )

requisition->width -= ticker->spacing;

border_width = gtk_container_get_border_width (GTK_CONTAINER (ticker));

requisition->height += border_width * 2;

requisition->width += border_width * 2;

}

static void gtk_ticker_compute_offsets (GtkTicker *ticker)

{

GtkTickerChild *child;

GtkRequisition child_requisition;

GList *children;

guint16 border_width;

g_return_if_fail (ticker != NULL);

g_return_if_fail (GTK_IS_TICKER(ticker));

border_width = gtk_container_get_border_width (GTK_CONTAINER (ticker));

#if GTK_CHECK_VERSION(2,18,0)

{

GtkAllocation allocation;

gtk_widget_get_allocation (GTK_WIDGET (ticker), &allocation);

ticker->width = allocation.width;

}

#else

ticker->width = GTK_WIDGET(ticker)->allocation.width;

#endif

ticker->total = 0;

children = ticker->children;

while (children) {

child = children->data;

child->x = 0;

if (gtk_widget_get_visible (child->widget)) {

gtk_widget_get_child_requisition (child->widget, &child_requisition);

child->offset = ticker->total;

ticker->total +=

child_requisition.width + border_width + ticker->spacing;

}

children = children->next;

}

ticker->dirty = FALSE;

}

static void gtk_ticker_size_allocate (GtkWidget *widget,

GtkAllocation *allocation)

{

GtkTicker *ticker;

GtkTickerChild *child;

GtkAllocation child_allocation;

GtkRequisition child_requisition;

GList *children;

guint16 border_width;

g_return_if_fail (widget != NULL);

g_return_if_fail (GTK_IS_TICKER(widget));

g_return_if_fail (allocation != NULL);

ticker = GTK_TICKER (widget);

#if GTK_CHECK_VERSION(2,18,0)

{

GtkAllocation a;

gtk_widget_get_allocation (GTK_WIDGET (ticker), &a);

if ( a.width != ticker->width )

ticker->dirty = TRUE;

}

#else

if ( GTK_WIDGET(ticker)->allocation.width != ticker->width )

ticker->dirty = TRUE;

#endif

if ( ticker->dirty == TRUE ) {

gtk_ticker_compute_offsets( ticker );

}

#if GTK_CHECK_VERSION(2,18,0)

gtk_widget_set_allocation (widget, allocation);

#else

widget->allocation = *allocation;

#endif

if (gtk_widget_is_realized (widget))

gdk_window_move_resize (gtk_widget_get_window (widget),

allocation->x,

allocation->y,

allocation->width,

allocation->height);

border_width = gtk_container_get_border_width (GTK_CONTAINER (ticker));

children = ticker->children;

while (children)

{

child = children->data;

child->x -= ticker->scootch;

if (gtk_widget_get_visible (child->widget)) {

gtk_widget_get_child_requisition (child->widget, &child_requisition);

child_allocation.width = child_requisition.width;

child_allocation.x = child->offset + border_width + child->x;

if ( ( child_allocation.x + child_allocation.width ) < allocation->x ) {

if ( ticker->total >= allocation->width ) {

child->x += allocation->x + allocation->width + ( ticker->total - ( allocation->x + allocation->width ) );

}

else {

child->x += allocation->x + allocation->width;

}

child_allocation.y = border_width;

child_allocation.height = child_requisition.height;

gtk_widget_size_allocate (child->widget, &child_allocation);

}

children = children->next;

}

void gtk_ticker_add(GtkTicker *ticker, GtkWidget *widget)

{

gtk_ticker_add_real( GTK_CONTAINER( ticker ), widget );

ticker->dirty = TRUE;

}

void gtk_ticker_remove(GtkTicker *ticker, GtkWidget *widget)

{

gtk_ticker_remove_real( GTK_CONTAINER( ticker ), widget );

ticker->dirty = TRUE;

}

static void gtk_ticker_add_real(GtkContainer *container, GtkWidget *widget)

{

g_return_if_fail (container != NULL);

g_return_if_fail (GTK_IS_TICKER (container));

g_return_if_fail (widget != NULL);

gtk_ticker_put(GTK_TICKER (container), widget);

}

static void gtk_ticker_remove_real(GtkContainer *container, GtkWidget *widget)

{

GtkTicker *ticker;

GtkTickerChild *child;

GList *children;

g_return_if_fail (container != NULL);

g_return_if_fail (GTK_IS_TICKER (container));

g_return_if_fail (widget != NULL);

ticker = GTK_TICKER (container);

children = ticker->children;

while (children)

{

child = children->data;

if (child->widget == widget)

{

gboolean was_visible = gtk_widget_get_visible (widget);

gtk_widget_unparent (widget);

ticker->children = g_list_remove_link (ticker->children, children);

g_list_free (children);

g_free (child);

if (was_visible && gtk_widget_get_visible (GTK_WIDGET (container)))

gtk_widget_queue_resize (GTK_WIDGET (container));

break;

}

children = children->next;

}

static void gtk_ticker_forall (GtkContainer *container,

gboolean include_internals,

GtkCallback callback,

gpointer callback_data)

{

GtkTicker *ticker;

GtkTickerChild *child;

GList *children;

g_return_if_fail (container != NULL);

g_return_if_fail (GTK_IS_TICKER (container));

g_return_if_fail (callback != NULL);

ticker = GTK_TICKER (container);

children = ticker->children;

while (children)

{

child = children->data;

children = children->next;

(* callback) (child->widget, callback_data);

}

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