#define __SP_WIDGET_C__

#include "macros.h"

#include "../document.h"

#include "sp-widget.h"

#include "helper/sp-marshal.h"

enum {

CONSTRUCT,

MODIFY_SELECTION,

CHANGE_SELECTION,

SET_SELECTION,

LAST_SIGNAL

};

static void sp_widget_class_init (SPWidgetClass *klass);

static void sp_widget_init (SPWidget *widget);

static void sp_widget_dispose(GObject *object);

static void sp_widget_show (GtkWidget *widget);

static void sp_widget_hide (GtkWidget *widget);

static void sp_widget_size_request (GtkWidget *widget, GtkRequisition *requisition);

#if GTK_CHECK_VERSION(3,0,0)

static void sp_widget_get_preferred_width(GtkWidget *widget,

gint *minimal_width,

gint *natural_width);

static void sp_widget_get_preferred_height(GtkWidget *widget,

gint *minimal_height,

gint *natural_height);

static gboolean sp_widget_draw(GtkWidget *widget, cairo_t *cr);

#else

static gboolean sp_widget_expose(GtkWidget *widget, GdkEventExpose *event);

#endif

static void sp_widget_size_allocate (GtkWidget *widget, GtkAllocation *allocation);

static void sp_widget_modify_selection (Inkscape::Application *inkscape, Inkscape::Selection *selection, guint flags, SPWidget *spw);

static void sp_widget_change_selection (Inkscape::Application *inkscape, Inkscape::Selection *selection, SPWidget *spw);

static void sp_widget_set_selection (Inkscape::Application *inkscape, Inkscape::Selection *selection, SPWidget *spw);

static GtkBinClass *parent_class;

static guint signals[LAST_SIGNAL] = {0};

sp_widget_get_type (void)

{

static GType type = 0;

if (!type) {

static const GTypeInfo info = {

sizeof (SPWidgetClass),

NULL, NULL,

(GClassInitFunc) sp_widget_class_init,

NULL, NULL,

sizeof (SPWidget),

0,

(GInstanceInitFunc) sp_widget_init,

NULL

};

type = g_type_register_static (GTK_TYPE_BIN,

"SPWidget",

&info,

(GTypeFlags)0);

}

return type;

}

static void sp_widget_class_init(SPWidgetClass *klass)

{

GObjectClass *object_class = (GObjectClass *) klass;

GtkWidgetClass *widget_class;

widget_class = (GtkWidgetClass *) klass;

parent_class = (GtkBinClass*)g_type_class_peek_parent (klass);

object_class->dispose = sp_widget_dispose;

signals[CONSTRUCT] = g_signal_new ("construct",

G_TYPE_FROM_CLASS(object_class),

G_SIGNAL_RUN_FIRST,

G_STRUCT_OFFSET (SPWidgetClass, construct),

NULL, NULL,

g_cclosure_marshal_VOID__VOID,

G_TYPE_NONE, 0);

signals[CHANGE_SELECTION] = g_signal_new ("change_selection",

G_TYPE_FROM_CLASS(object_class),

G_SIGNAL_RUN_FIRST,

G_STRUCT_OFFSET (SPWidgetClass, change_selection),

NULL, NULL,

g_cclosure_marshal_VOID__POINTER,

G_TYPE_NONE, 1,

G_TYPE_POINTER);

signals[MODIFY_SELECTION] = g_signal_new ("modify_selection",

G_TYPE_FROM_CLASS(object_class),

G_SIGNAL_RUN_FIRST,

G_STRUCT_OFFSET (SPWidgetClass, modify_selection),

NULL, NULL,

sp_marshal_VOID__POINTER_UINT,

G_TYPE_NONE, 2,

G_TYPE_POINTER, G_TYPE_UINT);

signals[SET_SELECTION] = g_signal_new ("set_selection",

G_TYPE_FROM_CLASS(object_class),

G_SIGNAL_RUN_FIRST,

G_STRUCT_OFFSET (SPWidgetClass, set_selection),

NULL, NULL,

g_cclosure_marshal_VOID__POINTER,

G_TYPE_NONE, 1,

G_TYPE_POINTER);

widget_class->show = sp_widget_show;

widget_class->hide = sp_widget_hide;

#if GTK_CHECK_VERSION(3,0,0)

widget_class->get_preferred_width = sp_widget_get_preferred_width;

widget_class->get_preferred_height = sp_widget_get_preferred_height;

widget_class->draw = sp_widget_draw;

#else

widget_class->size_request = sp_widget_size_request;

widget_class->expose_event = sp_widget_expose;

#endif

widget_class->size_allocate = sp_widget_size_allocate;

}

static void

sp_widget_init (SPWidget *spw)

{

spw->inkscape = NULL;

}

static void sp_widget_dispose(GObject *object)

{

SPWidget *spw;

spw = (SPWidget *) object;

if (spw->inkscape) {

/* Disconnect signals */

// the checks are necessary because when destroy is caused by the the program shutting down,

// the inkscape object may already be (partly?) invalid --bb

if (G_IS_OBJECT(spw->inkscape) && G_OBJECT_GET_CLASS(G_OBJECT(spw->inkscape)))

sp_signal_disconnect_by_data (spw->inkscape, spw);

spw->inkscape = NULL;

}

if (((GObjectClass *) parent_class)->dispose)

(* ((GObjectClass *) parent_class)->dispose) (object);

}

static void

sp_widget_show (GtkWidget *widget)

{

SPWidget *spw;

spw = SP_WIDGET (widget);

if (spw->inkscape) {

/* Connect signals */

g_signal_connect (G_OBJECT (spw->inkscape), "modify_selection", G_CALLBACK (sp_widget_modify_selection), spw);

g_signal_connect (G_OBJECT (spw->inkscape), "change_selection", G_CALLBACK (sp_widget_change_selection), spw);

g_signal_connect (G_OBJECT (spw->inkscape), "set_selection", G_CALLBACK (sp_widget_set_selection), spw);

}

if (((GtkWidgetClass *) parent_class)->show)

(* ((GtkWidgetClass *) parent_class)->show) (widget);

}

static void

sp_widget_hide (GtkWidget *widget)

{

SPWidget *spw;

spw = SP_WIDGET (widget);

if (spw->inkscape) {

/* Disconnect signals */

sp_signal_disconnect_by_data (spw->inkscape, spw);

}

if (((GtkWidgetClass *) parent_class)->hide)

(* ((GtkWidgetClass *) parent_class)->hide) (widget);

}

#if GTK_CHECK_VERSION(3,0,0)

static gboolean sp_widget_draw(GtkWidget *widget, cairo_t *cr)

#else

static gboolean sp_widget_expose(GtkWidget *widget, GdkEventExpose *event)

#endif

{

GtkBin *bin = GTK_BIN (widget);

GtkWidget *child = gtk_bin_get_child (bin);

if (child) {

#if GTK_CHECK_VERSION(3,0,0)

gtk_container_propagate_draw(GTK_CONTAINER(widget), child, cr);

#else

gtk_container_propagate_expose(GTK_CONTAINER(widget), child, event);

#endif

}

return FALSE;

}

static void

sp_widget_size_request (GtkWidget *widget, GtkRequisition *requisition)

{

GtkBin *bin = GTK_BIN (widget);

GtkWidget *child = gtk_bin_get_child (bin);

if (child)

gtk_widget_size_request (child, requisition);

}

#if GTK_CHECK_VERSION(3,0,0)

static void sp_widget_get_preferred_width(GtkWidget *widget, gint *minimal_width, gint *natural_width)

{

GtkRequisition requisition;

sp_widget_size_request(widget, &requisition);

*minimal_width = *natural_width = requisition.width;

}

static void sp_widget_get_preferred_height(GtkWidget *widget, gint *minimal_height, gint *natural_height)

{

GtkRequisition requisition;

sp_widget_size_request(widget, &requisition);

*minimal_height = *natural_height = requisition.height;

}

#endif

static void

sp_widget_size_allocate (GtkWidget *widget, GtkAllocation *allocation)

{

GtkBin *bin = GTK_BIN (widget);

GtkWidget *child = gtk_bin_get_child (bin);

gtk_widget_set_allocation (widget, allocation);

if (child)

gtk_widget_size_allocate (child, allocation);

}

GtkWidget *

sp_widget_new_global (Inkscape::Application *inkscape)

{

SPWidget *spw;

spw = (SPWidget*)g_object_new (SP_TYPE_WIDGET, NULL);

if (!sp_widget_construct_global (spw, inkscape)) {

g_object_unref (spw);

return NULL;

}

return (GtkWidget *) spw;

}

GtkWidget *

sp_widget_construct_global (SPWidget *spw, Inkscape::Application *inkscape)

{

g_return_val_if_fail (!spw->inkscape, NULL);

spw->inkscape = inkscape;

if (gtk_widget_get_visible (GTK_WIDGET(spw))) {

g_signal_connect (G_OBJECT (inkscape), "modify_selection", G_CALLBACK (sp_widget_modify_selection), spw);

g_signal_connect (G_OBJECT (inkscape), "change_selection", G_CALLBACK (sp_widget_change_selection), spw);

g_signal_connect (G_OBJECT (inkscape), "set_selection", G_CALLBACK (sp_widget_set_selection), spw);

}

g_signal_emit (G_OBJECT (spw), signals[CONSTRUCT], 0);

return (GtkWidget *) spw;

}

static void

sp_widget_modify_selection (Inkscape::Application */*inkscape*/, Inkscape::Selection *selection, guint flags, SPWidget *spw)

{

g_signal_emit (G_OBJECT (spw), signals[MODIFY_SELECTION], 0, selection, flags);

}

static void

sp_widget_change_selection (Inkscape::Application */*inkscape*/, Inkscape::Selection *selection, SPWidget *spw)

{

g_signal_emit (G_OBJECT (spw), signals[CHANGE_SELECTION], 0, selection);

}

static void

sp_widget_set_selection (Inkscape::Application */*inkscape*/, Inkscape::Selection *selection, SPWidget *spw)

{

/* Emit "set_selection" signal */

g_signal_emit (G_OBJECT (spw), signals[SET_SELECTION], 0, selection);

/* Inkscape will force "change_selection" anyways */

}