[wxWidgets.git] / src / gtk / win_gtk.cpp

///////////////////////////////////////////////////////////////////////////////
// Name:        src/gtk/win_gtk.cpp
// Purpose:     native GTK+ widget for wxWindow
// Author:      Paul Cornett
// Id:          $Id$
// Copyright:   (c) 2007 Paul Cornett
// Licence:     wxWindows licence
///////////////////////////////////////////////////////////////////////////////

#include "wx/defs.h"
#include "wx/gtk/win_gtk.h"

/*
wxPizza is a custom GTK+ widget derived from GtkFixed.  A custom widget
is needed to adapt GTK+ to wxWidgets needs in 3 areas: scrolling, window
borders, and RTL.

For scrolling, the "set_scroll_adjustments" signal is implemented
to make wxPizza appear scrollable to GTK+, allowing it to be put in a
GtkScrolledWindow.  Child widget positions are adjusted for the scrolling
position in size_allocate.  A second same-size GdkWindow is placed behind
widget->window, to allow GDK to use a more efficient scrolling technique.

For borders, space is reserved in realize and size_allocate.
For non-scrolling wxWindows, a second GdkWindow is used for the
border; scrolling wxWindows draw their border on wxPizza's parent
(a GtkScrolledWindow) GdkWindow.  Border widths for sunken and raised
styles are taken from widget->style, so they will match the current theme.

For RTL, child widget positions are mirrored in size_allocate.
*/

static GtkWidgetClass* parent_class;

extern "C" {

struct wxPizzaClass
{
    GtkFixedClass parent;
    void (*set_scroll_adjustments)(GtkWidget*, GtkAdjustment*, GtkAdjustment*);
};

static void size_allocate(GtkWidget* widget, GtkAllocation* alloc)
{
    const bool is_resize =
        widget->allocation.width  != alloc->width ||
        widget->allocation.height != alloc->height;
    const bool is_move =
        widget->allocation.x != alloc->x ||
        widget->allocation.y != alloc->y;

    widget->allocation = *alloc;

    wxPizza* pizza = WX_PIZZA(widget);
    int border_x, border_y;
    pizza->get_border_widths(border_x, border_y);
    int w = alloc->width - 2 * border_x;
    if (w < 0) w = 0;

    if (GTK_WIDGET_REALIZED(widget) && (is_move || is_resize))
    {
        int h = alloc->height - 2 * border_y;
        if (h < 0) h = 0;

        if (pizza->m_is_scrollable)
        {
            // backing window is inside border
            gdk_window_move_resize(pizza->m_backing_window,
                alloc->x + border_x, alloc->y + border_y, w, h);
        }
        else
        {
            // border window (or only window if
            // no-scroll no-border) is full size
            GdkWindow* window = pizza->m_backing_window;
            if (window == NULL)
                window = widget->window;
            gdk_window_move_resize(
                window, alloc->x, alloc->y, alloc->width, alloc->height);
        }
        if (is_resize && pizza->m_backing_window)
        {
            // main window is inside border
            if (pizza->m_is_scrollable)
                gdk_window_resize(widget->window, w, h);
            else
                // need move as well as resize because border can change
                gdk_window_move_resize(widget->window, border_x, border_y, w, h);

            // wxWidgets turns off redraw-on-allocate by default,
            // so border area needs to be invalidated
            if (border_x > 1 || border_y > 1)
            {
                if (pizza->m_is_scrollable)
                    ; // invalidate does not seem to be needed in this case
                else
                    gdk_window_invalidate_rect(pizza->m_backing_window, NULL, false);
            }
        }
    }
    // adjust child positions
    for (const GList* list = pizza->m_fixed.children; list; list = list->next)
    {
        const GtkFixedChild* child = static_cast<GtkFixedChild*>(list->data);
        if (GTK_WIDGET_VISIBLE(child->widget))
        {
            GtkAllocation child_alloc;
            // note that child positions do not take border into
            // account, they need to be relative to widget->window,
            // which has already been adjusted
            child_alloc.x = child->x - pizza->m_scroll_x;
            child_alloc.y = child->y - pizza->m_scroll_y;
            GtkRequisition req;
            gtk_widget_get_child_requisition(child->widget, &req);
            child_alloc.width  = req.width;
            child_alloc.height = req.height;
            if (gtk_widget_get_direction(widget) == GTK_TEXT_DIR_RTL)
            {
                child_alloc.x = w - child_alloc.x - child_alloc.width;
            }
            gtk_widget_size_allocate(child->widget, &child_alloc);
        }
    }
}

static void realize(GtkWidget* widget)
{
    parent_class->realize(widget);

    wxPizza* pizza = WX_PIZZA(widget);
    // second window is created if there is a border, or wxWindow is scrollable
    if (pizza->m_border_style || pizza->m_is_scrollable)
    {
        GdkWindowAttr attr;
        attr.event_mask = pizza->m_is_scrollable ? 0 : GDK_EXPOSURE_MASK;
        attr.x = widget->allocation.x;
        attr.y = widget->allocation.y;
        attr.width = widget->allocation.width;
        attr.height = widget->allocation.height;
        int border_x, border_y;
        pizza->get_border_widths(border_x, border_y);
        int w = widget->allocation.width  - 2 * border_x;
        int h = widget->allocation.height - 2 * border_y;
        if (w < 0) w = 0;
        if (h < 0) h = 0;
        if (pizza->m_is_scrollable)
        {
            attr.x += border_x;
            attr.y += border_y;
            attr.width  = w;
            attr.height = h;
        }
        attr.wclass = GDK_INPUT_OUTPUT;
        attr.visual = gtk_widget_get_visual(widget);
        attr.colormap = gtk_widget_get_colormap(widget);
        attr.window_type = GDK_WINDOW_CHILD;

        pizza->m_backing_window = gdk_window_new(
            gdk_window_get_parent(widget->window),
            &attr,
            GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP);

        gdk_window_set_user_data(pizza->m_backing_window, widget);
        if (pizza->m_is_scrollable)
            gdk_window_reparent(widget->window, pizza->m_backing_window, 0, 0);
        else
            gdk_window_reparent(widget->window, pizza->m_backing_window, border_x, border_y);
        gdk_window_resize(widget->window, w, h);
    }
}

static void unrealize(GtkWidget* widget)
{
    parent_class->unrealize(widget);

    wxPizza* pizza = WX_PIZZA(widget);
    if (pizza->m_backing_window)
    {
        gdk_window_set_user_data(pizza->m_backing_window, NULL);
        gdk_window_destroy(pizza->m_backing_window);
        pizza->m_backing_window = NULL;
    }
}

static void map(GtkWidget* widget)
{
    parent_class->map(widget);

    wxPizza* pizza = WX_PIZZA(widget);
    if (pizza->m_backing_window)
        gdk_window_show(pizza->m_backing_window);
}

static void unmap(GtkWidget* widget)
{
    parent_class->unmap(widget);

    wxPizza* pizza = WX_PIZZA(widget);
    if (pizza->m_backing_window)
        gdk_window_hide(pizza->m_backing_window);
}

// not used, but needs to exist so gtk_widget_set_scroll_adjustments will work
static void set_scroll_adjustments(GtkWidget*, GtkAdjustment*, GtkAdjustment*)
{
}

// Marshaller needed for set_scroll_adjustments signal,
// generated with GLib-2.4.6 glib-genmarshal
#define g_marshal_value_peek_object(v)   g_value_get_object (v)
static void
g_cclosure_user_marshal_VOID__OBJECT_OBJECT (GClosure     *closure,
                                             GValue       * /*return_value*/,
                                             guint         n_param_values,
                                             const GValue *param_values,
                                             gpointer      /*invocation_hint*/,
                                             gpointer      marshal_data)
{
  typedef void (*GMarshalFunc_VOID__OBJECT_OBJECT) (gpointer     data1,
                                                    gpointer     arg_1,
                                                    gpointer     arg_2,
                                                    gpointer     data2);
  register GMarshalFunc_VOID__OBJECT_OBJECT callback;
  register GCClosure *cc = (GCClosure*) closure;
  register gpointer data1, data2;

  g_return_if_fail (n_param_values == 3);

  if (G_CCLOSURE_SWAP_DATA (closure))
    {
      data1 = closure->data;
      data2 = g_value_peek_pointer (param_values + 0);
    }
  else
    {
      data1 = g_value_peek_pointer (param_values + 0);
      data2 = closure->data;
    }
  callback = (GMarshalFunc_VOID__OBJECT_OBJECT) (marshal_data ? marshal_data : cc->callback);

  callback (data1,
            g_marshal_value_peek_object (param_values + 1),
            g_marshal_value_peek_object (param_values + 2),
            data2);
}

static void class_init(void* g_class, void*)
{
    GtkWidgetClass* widget_class = (GtkWidgetClass*)g_class;
    widget_class->size_allocate = size_allocate;
    widget_class->realize = realize;
    widget_class->unrealize = unrealize;
    widget_class->map = map;
    widget_class->unmap = unmap;
    wxPizzaClass* klass = (wxPizzaClass*)g_class;

    // needed to make widget appear scrollable to GTK+
    klass->set_scroll_adjustments = set_scroll_adjustments;
    widget_class->set_scroll_adjustments_signal =
        g_signal_new(
            "set_scroll_adjustments",
            G_TYPE_FROM_CLASS(g_class),
            G_SIGNAL_RUN_LAST,
            G_STRUCT_OFFSET(wxPizzaClass, set_scroll_adjustments),
            NULL, NULL,
            g_cclosure_user_marshal_VOID__OBJECT_OBJECT,
            G_TYPE_NONE, 2, GTK_TYPE_ADJUSTMENT, GTK_TYPE_ADJUSTMENT);

    parent_class = GTK_WIDGET_CLASS(g_type_class_peek_parent(g_class));
}

} // extern "C"

GType wxPizza::type()
{
    static GtkType type;
    if (type == 0)
    {
        const GTypeInfo info = {
            sizeof(wxPizzaClass),
            NULL, NULL,
            class_init,
            NULL, NULL,
            sizeof(wxPizza), 0,
            NULL, NULL
        };
        type = g_type_register_static(
            GTK_TYPE_FIXED, "wxPizza", &info, GTypeFlags(0));
    }
    return type;
}

GtkWidget* wxPizza::New(long windowStyle)
{
    GtkWidget* widget = GTK_WIDGET(g_object_new(type(), NULL));
    wxPizza* pizza = WX_PIZZA(widget);
    pizza->m_backing_window = NULL;
    pizza->m_scroll_x = 0;
    pizza->m_scroll_y = 0;
    pizza->m_is_scrollable = (windowStyle & (wxHSCROLL | wxVSCROLL)) != 0;
    // mask off border styles not useable with wxPizza
    pizza->m_border_style = int(windowStyle & BORDER_STYLES);
    gtk_fixed_set_has_window(GTK_FIXED(widget), true);
    gtk_widget_add_events(widget,
        GDK_EXPOSURE_MASK |
        GDK_SCROLL_MASK |
        GDK_POINTER_MOTION_MASK |
        GDK_POINTER_MOTION_HINT_MASK |
        GDK_BUTTON_MOTION_MASK |
        GDK_BUTTON1_MOTION_MASK |
        GDK_BUTTON2_MOTION_MASK |
        GDK_BUTTON3_MOTION_MASK |
        GDK_BUTTON_PRESS_MASK |
        GDK_BUTTON_RELEASE_MASK |
        GDK_KEY_PRESS_MASK |
        GDK_KEY_RELEASE_MASK |
        GDK_ENTER_NOTIFY_MASK |
        GDK_LEAVE_NOTIFY_MASK |
        GDK_FOCUS_CHANGE_MASK);
    return widget;
}

// gtk_fixed_move does not check for a change before issuing a queue_resize,
// we need to avoid that to prevent endless sizing loops, so check first
void wxPizza::move(GtkWidget* widget, int x, int y)
{
    GtkFixed* fixed = &m_fixed;
    for (const GList* list = fixed->children; list; list = list->next)
    {
        const GtkFixedChild* child = static_cast<GtkFixedChild*>(list->data);
        if (child->widget == widget)
        {
            if (child->x != x || child->y != y)
                gtk_fixed_move(fixed, widget, x, y);
            break;
        }
    }
}

void wxPizza::scroll(int dx, int dy)
{
    GtkWidget* widget = GTK_WIDGET(this);
    if (gtk_widget_get_direction(widget) == GTK_TEXT_DIR_RTL)
        dx = -dx;
    m_scroll_x -= dx;
    m_scroll_y -= dy;
    if (widget->window)
        gdk_window_scroll(widget->window, dx, dy);
    const GList* list = m_fixed.children;
    if (list)
    {
        const GtkFixedChild* child = static_cast<GtkFixedChild*>(list->data);
        // queueing a resize on any child will update them all
        gtk_widget_queue_resize(child->widget);
    }
}

extern GtkWidget *GetEntryWidget();

void wxPizza::get_border_widths(int& x, int& y)
{
    x = y = 0;
    if (m_border_style & wxBORDER_SIMPLE)
        x = y = 1;
    else if (m_border_style)
    {
        GtkWidget *entry_widget = GetEntryWidget();
        if (entry_widget->style)
        {
            x = entry_widget->style->xthickness;
            y = entry_widget->style->ythickness;
        }
    }
}
Commit	Line	Data
e56307d3 PC	1	///////////////////////////////////////////////////////////////////////////////
	2	// Name: src/gtk/win_gtk.cpp
	3	// Purpose: native GTK+ widget for wxWindow
	4	// Author: Paul Cornett
	5	// Id: $Id$
	6	// Copyright: (c) 2007 Paul Cornett
	7	// Licence: wxWindows licence
	8	///////////////////////////////////////////////////////////////////////////////
	9
	10	#include "wx/defs.h"
	11	#include "wx/gtk/win_gtk.h"
	12
	13	/*
	14	wxPizza is a custom GTK+ widget derived from GtkFixed. A custom widget
	15	is needed to adapt GTK+ to wxWidgets needs in 3 areas: scrolling, window
	16	borders, and RTL.
	17
	18	For scrolling, the "set_scroll_adjustments" signal is implemented
	19	to make wxPizza appear scrollable to GTK+, allowing it to be put in a
	20	GtkScrolledWindow. Child widget positions are adjusted for the scrolling
	21	position in size_allocate. A second same-size GdkWindow is placed behind
	22	widget->window, to allow GDK to use a more efficient scrolling technique.
	23
	24	For borders, space is reserved in realize and size_allocate.
	25	For non-scrolling wxWindows, a second GdkWindow is used for the
	26	border; scrolling wxWindows draw their border on wxPizza's parent
	27	(a GtkScrolledWindow) GdkWindow. Border widths for sunken and raised
	28	styles are taken from widget->style, so they will match the current theme.
	29
	30	For RTL, child widget positions are mirrored in size_allocate.
	31	*/
	32
	33	static GtkWidgetClass* parent_class;
	34
	35	extern "C" {
	36
	37	struct wxPizzaClass
	38	{
	39	GtkFixedClass parent;
	40	void (set_scroll_adjustments)(GtkWidget, GtkAdjustment, GtkAdjustment);
	41	};
	42
	43	static void size_allocate(GtkWidget* widget, GtkAllocation* alloc)
	44	{
	45	const bool is_resize =
	46	widget->allocation.width != alloc->width \|\|
	47	widget->allocation.height != alloc->height;
	48	const bool is_move =
	49	widget->allocation.x != alloc->x \|\|
	50	widget->allocation.y != alloc->y;
	51
	52	widget->allocation = *alloc;
	53
	54	wxPizza* pizza = WX_PIZZA(widget);
	55	int border_x, border_y;
	56	pizza->get_border_widths(border_x, border_y);
	57	int w = alloc->width - 2 * border_x;
	58	if (w < 0) w = 0;
	59
	60	if (GTK_WIDGET_REALIZED(widget) && (is_move \|\| is_resize))
	61	{
	62	int h = alloc->height - 2 * border_y;
	63	if (h < 0) h = 0;
	64
65	if (pizza->m_is_scrollable)
66	{
67	// backing window is inside border
68	gdk_window_move_resize(pizza->m_backing_window,
69	alloc->x + border_x, alloc->y + border_y, w, h);
70	}
71	else
72	{
73	// border window (or only window if
74	// no-scroll no-border) is full size
75	GdkWindow* window = pizza->m_backing_window;
76	if (window == NULL)
77	window = widget->window;
78	gdk_window_move_resize(
79	window, alloc->x, alloc->y, alloc->width, alloc->height);
80	}
81	if (is_resize && pizza->m_backing_window)
82	{
83	// main window is inside border
84	if (pizza->m_is_scrollable)
85	gdk_window_resize(widget->window, w, h);
86	else
87	// need move as well as resize because border can change
88	gdk_window_move_resize(widget->window, border_x, border_y, w, h);
89
90	// wxWidgets turns off redraw-on-allocate by default,
91	// so border area needs to be invalidated
92	if (border_x > 1 \|\| border_y > 1)
93	{
94	if (pizza->m_is_scrollable)
95	; // invalidate does not seem to be needed in this case
96	else
97	gdk_window_invalidate_rect(pizza->m_backing_window, NULL, false);
98	}
99	}
100	}
101	// adjust child positions
102	for (const GList* list = pizza->m_fixed.children; list; list = list->next)
103	{
104	const GtkFixedChild* child = static_cast<GtkFixedChild*>(list->data);
105	if (GTK_WIDGET_VISIBLE(child->widget))
106	{
107	GtkAllocation child_alloc;
108	// note that child positions do not take border into
109	// account, they need to be relative to widget->window,
110	// which has already been adjusted
111	child_alloc.x = child->x - pizza->m_scroll_x;
112	child_alloc.y = child->y - pizza->m_scroll_y;
113	GtkRequisition req;
114	gtk_widget_get_child_requisition(child->widget, &req);
115	child_alloc.width = req.width;
116	child_alloc.height = req.height;
117	if (gtk_widget_get_direction(widget) == GTK_TEXT_DIR_RTL)
118	{
119	child_alloc.x = w - child_alloc.x - child_alloc.width;
120	}
121	gtk_widget_size_allocate(child->widget, &child_alloc);
122	}
123	}
124	}
125
126	static void realize(GtkWidget* widget)
127	{
128	parent_class->realize(widget);
129
130	wxPizza* pizza = WX_PIZZA(widget);
131	// second window is created if there is a border, or wxWindow is scrollable
132	if (pizza->m_border_style \|\| pizza->m_is_scrollable)
133	{
134	GdkWindowAttr attr;
135	attr.event_mask = pizza->m_is_scrollable ? 0 : GDK_EXPOSURE_MASK;
136	attr.x = widget->allocation.x;
137	attr.y = widget->allocation.y;
138	attr.width = widget->allocation.width;
139	attr.height = widget->allocation.height;
140	int border_x, border_y;
141	pizza->get_border_widths(border_x, border_y);
142	int w = widget->allocation.width - 2 * border_x;
143	int h = widget->allocation.height - 2 * border_y;
144	if (w < 0) w = 0;
145	if (h < 0) h = 0;
146	if (pizza->m_is_scrollable)
147	{
148	attr.x += border_x;
149	attr.y += border_y;
150	attr.width = w;
151	attr.height = h;
152	}
153	attr.wclass = GDK_INPUT_OUTPUT;
154	attr.visual = gtk_widget_get_visual(widget);
155	attr.colormap = gtk_widget_get_colormap(widget);
156	attr.window_type = GDK_WINDOW_CHILD;
157
158	pizza->m_backing_window = gdk_window_new(
159	gdk_window_get_parent(widget->window),
160	&attr,
161	GDK_WA_X \| GDK_WA_Y \| GDK_WA_VISUAL \| GDK_WA_COLORMAP);
162
163	gdk_window_set_user_data(pizza->m_backing_window, widget);
164	if (pizza->m_is_scrollable)
165	gdk_window_reparent(widget->window, pizza->m_backing_window, 0, 0);
166	else
167	gdk_window_reparent(widget->window, pizza->m_backing_window, border_x, border_y);
168	gdk_window_resize(widget->window, w, h);
169	}
170	}
171
172	static void unrealize(GtkWidget* widget)
173	{
174	parent_class->unrealize(widget);
175
176	wxPizza* pizza = WX_PIZZA(widget);
177	if (pizza->m_backing_window)
178	{
179	gdk_window_set_user_data(pizza->m_backing_window, NULL);
180	gdk_window_destroy(pizza->m_backing_window);
181	pizza->m_backing_window = NULL;
182	}
183	}
184
185	static void map(GtkWidget* widget)
186	{
187	parent_class->map(widget);
188
189	wxPizza* pizza = WX_PIZZA(widget);
190	if (pizza->m_backing_window)
191	gdk_window_show(pizza->m_backing_window);
192	}
193
194	static void unmap(GtkWidget* widget)
195	{
196	parent_class->unmap(widget);
197
198	wxPizza* pizza = WX_PIZZA(widget);
199	if (pizza->m_backing_window)
200	gdk_window_hide(pizza->m_backing_window);
201	}
202
203	// not used, but needs to exist so gtk_widget_set_scroll_adjustments will work
204	static void set_scroll_adjustments(GtkWidget, GtkAdjustment, GtkAdjustment*)
205	{
206	}
207
208	// Marshaller needed for set_scroll_adjustments signal,
209	// generated with GLib-2.4.6 glib-genmarshal
210	#define g_marshal_value_peek_object(v) g_value_get_object (v)
211	static void
212	g_cclosure_user_marshal_VOID__OBJECT_OBJECT (GClosure *closure,
213	GValue * /return_value/,
214	guint n_param_values,
215	const GValue *param_values,
216	gpointer /invocation_hint/,
217	gpointer marshal_data)
218	{
219	typedef void (*GMarshalFunc_VOID__OBJECT_OBJECT) (gpointer data1,
220	gpointer arg_1,
221	gpointer arg_2,
222	gpointer data2);
223	register GMarshalFunc_VOID__OBJECT_OBJECT callback;
224	register GCClosure cc = (GCClosure) closure;
225	register gpointer data1, data2;
226
227	g_return_if_fail (n_param_values == 3);
228
229	if (G_CCLOSURE_SWAP_DATA (closure))
230	{
231	data1 = closure->data;
232	data2 = g_value_peek_pointer (param_values + 0);
233	}
234	else
235	{
236	data1 = g_value_peek_pointer (param_values + 0);
237	data2 = closure->data;
238	}
239	callback = (GMarshalFunc_VOID__OBJECT_OBJECT) (marshal_data ? marshal_data : cc->callback);
240
241	callback (data1,
242	g_marshal_value_peek_object (param_values + 1),
243	g_marshal_value_peek_object (param_values + 2),
244	data2);
245	}
246
247	static void class_init(void* g_class, void*)
248	{
249	GtkWidgetClass* widget_class = (GtkWidgetClass*)g_class;
250	widget_class->size_allocate = size_allocate;
251	widget_class->realize = realize;
252	widget_class->unrealize = unrealize;
253	widget_class->map = map;
254	widget_class->unmap = unmap;
255	wxPizzaClass* klass = (wxPizzaClass*)g_class;
256
257	// needed to make widget appear scrollable to GTK+
258	klass->set_scroll_adjustments = set_scroll_adjustments;
259	widget_class->set_scroll_adjustments_signal =
260	g_signal_new(
261	"set_scroll_adjustments",
262	G_TYPE_FROM_CLASS(g_class),
263	G_SIGNAL_RUN_LAST,
264	G_STRUCT_OFFSET(wxPizzaClass, set_scroll_adjustments),
265	NULL, NULL,
266	g_cclosure_user_marshal_VOID__OBJECT_OBJECT,
267	G_TYPE_NONE, 2, GTK_TYPE_ADJUSTMENT, GTK_TYPE_ADJUSTMENT);
268
269	parent_class = GTK_WIDGET_CLASS(g_type_class_peek_parent(g_class));
270	}
271
272	} // extern "C"
273
274	GType wxPizza::type()
275	{
276	static GtkType type;
277	if (type == 0)
278	{
279	const GTypeInfo info = {
280	sizeof(wxPizzaClass),
281	NULL, NULL,
282	class_init,
283	NULL, NULL,
284	sizeof(wxPizza), 0,
285	NULL, NULL
286	};
287	type = g_type_register_static(
288	GTK_TYPE_FIXED, "wxPizza", &info, GTypeFlags(0));
289	}
290	return type;
291	}
292
293	GtkWidget* wxPizza::New(long windowStyle)
294	{
295	GtkWidget* widget = GTK_WIDGET(g_object_new(type(), NULL));
296	wxPizza* pizza = WX_PIZZA(widget);
297	pizza->m_backing_window = NULL;
298	pizza->m_scroll_x = 0;
299	pizza->m_scroll_y = 0;
300	pizza->m_is_scrollable = (windowStyle & (wxHSCROLL \| wxVSCROLL)) != 0;
59d09ad4 PC	301	// mask off border styles not useable with wxPizza
59d09ad4 PC	302	pizza->m_border_style = int(windowStyle & BORDER_STYLES);
e56307d3 PC	303	gtk_fixed_set_has_window(GTK_FIXED(widget), true);
	304	gtk_widget_add_events(widget,
	305	GDK_EXPOSURE_MASK \|
	306	GDK_SCROLL_MASK \|
	307	GDK_POINTER_MOTION_MASK \|
	308	GDK_POINTER_MOTION_HINT_MASK \|
	309	GDK_BUTTON_MOTION_MASK \|
	310	GDK_BUTTON1_MOTION_MASK \|
	311	GDK_BUTTON2_MOTION_MASK \|
	312	GDK_BUTTON3_MOTION_MASK \|
	313	GDK_BUTTON_PRESS_MASK \|
	314	GDK_BUTTON_RELEASE_MASK \|
	315	GDK_KEY_PRESS_MASK \|
	316	GDK_KEY_RELEASE_MASK \|
	317	GDK_ENTER_NOTIFY_MASK \|
	318	GDK_LEAVE_NOTIFY_MASK \|
	319	GDK_FOCUS_CHANGE_MASK);
e56307d3 PC	320	return widget;
	321	}
	322
	323	// gtk_fixed_move does not check for a change before issuing a queue_resize,
	324	// we need to avoid that to prevent endless sizing loops, so check first
	325	void wxPizza::move(GtkWidget* widget, int x, int y)
	326	{
	327	GtkFixed* fixed = &m_fixed;
	328	for (const GList* list = fixed->children; list; list = list->next)
	329	{
	330	const GtkFixedChild* child = static_cast<GtkFixedChild*>(list->data);
	331	if (child->widget == widget)
	332	{
	333	if (child->x != x \|\| child->y != y)
	334	gtk_fixed_move(fixed, widget, x, y);
	335	break;
	336	}
	337	}
	338	}
	339
	340	void wxPizza::scroll(int dx, int dy)
	341	{
	342	GtkWidget* widget = GTK_WIDGET(this);
	343	if (gtk_widget_get_direction(widget) == GTK_TEXT_DIR_RTL)
	344	dx = -dx;
	345	m_scroll_x -= dx;
	346	m_scroll_y -= dy;
	347	if (widget->window)
	348	gdk_window_scroll(widget->window, dx, dy);
	349	const GList* list = m_fixed.children;
	350	if (list)
	351	{
	352	const GtkFixedChild* child = static_cast<GtkFixedChild*>(list->data);
	353	// queueing a resize on any child will update them all
	354	gtk_widget_queue_resize(child->widget);
	355	}
	356	}
	357
6de67633 RR	358	extern GtkWidget *GetEntryWidget();
6de67633 RR	359
e56307d3 PC	360	void wxPizza::get_border_widths(int& x, int& y)
	361	{
	362	x = y = 0;
	363	if (m_border_style & wxBORDER_SIMPLE)
	364	x = y = 1;
	365	else if (m_border_style)
	366	{
6de67633 RR	367	GtkWidget *entry_widget = GetEntryWidget();
6de67633 RR	368	if (entry_widget->style)
e56307d3	369	{
6de67633 RR	370	x = entry_widget->style->xthickness;
6de67633 RR	371	y = entry_widget->style->ythickness;
e56307d3 PC	372	}
	373	}
	374	}