/*
From gtkcontainer.c
*/
void
_container_propagate_expose (GtkContainer *container,
GtkWidget *child,
GdkEventExpose *event)
{
GdkEvent *child_event;
g_return_if_fail (GTK_IS_CONTAINER (container));
g_return_if_fail (GTK_IS_WIDGET (child));
g_return_if_fail (event != NULL);
g_assert (child->parent == GTK_WIDGET (container));
if (GTK_WIDGET_DRAWABLE (child) &&
GTK_WIDGET_NO_WINDOW (child) &&
(child->window == event->window)&&
AWN_IS_CAIRO_MENU_ITEM(child))
{
child_event = gdk_event_new (GDK_EXPOSE);
child_event->expose = *event;
g_object_ref (child_event->expose.window);
child_event->expose.region = gtk_widget_region_intersect (child, event->region);
if (!gdk_region_empty (child_event->expose.region))
{
gdk_region_get_clipbox (child_event->expose.region, &child_event->expose.area);
gtk_widget_send_expose (child, child_event);
}
gdk_event_free (child_event);
}
}
bool wxRegion::IsEmpty() const
{
if (!m_refData)
return TRUE;
return gdk_region_empty( M_REGIONDATA->m_region );
}
/*
* Strategy to painting a Widget:
* 1.) do not paint if there is no GtkWidget set
* 2.) We assume that GTK_NO_WINDOW is set and that geometryChanged positioned
* the widget correctly. ATM we do not honor the GraphicsContext translation.
*/
void Widget::paint(GraphicsContext* context, const IntRect&)
{
if (!gtkWidget())
return;
GtkWidget* widget = gtkWidget();
ASSERT(GTK_WIDGET_NO_WINDOW(widget));
GdkEvent* event = gdk_event_new(GDK_EXPOSE);
event->expose = *context->gdkExposeEvent();
event->expose.region = gtk_widget_region_intersect(widget, event->expose.region);
/*
* This will be unref'ed by gdk_event_free.
*/
g_object_ref(event->expose.window);
/*
* If we are going to paint do the translation and GtkAllocation manipulation.
*/
if (!gdk_region_empty(event->expose.region)) {
gdk_region_get_clipbox(event->expose.region, &event->expose.area);
gtk_widget_send_expose(widget, event);
}
gdk_event_free(event);
}
gboolean scenemanager_can_draw_rectangle(scenemanager_t* pSceneManager, GdkRectangle* pRect, gint nFlags)
{
//
// 1) Enforce on-screen rules
//
if(nFlags & SCENEMANAGER_FLAG_FULLY_ON_SCREEN) {
// basic rect1 contains rect2 test
if((pRect->x) <= 0) return FALSE;
if((pRect->y) <= 0) return FALSE;
if((pRect->x + pRect->width) > pSceneManager->nWindowWidth) return FALSE;
if((pRect->y + pRect->height) > pSceneManager->nWindowHeight) return FALSE;
}
else if(nFlags & SCENEMANAGER_FLAG_PARTLY_ON_SCREEN) {
// basic rect intersect test
if((pRect->x + pRect->width) <= 0) return FALSE;
if((pRect->y + pRect->height) <= 0) return FALSE;
if((pRect->x) > pSceneManager->nWindowWidth) return FALSE;
if((pRect->y) > pSceneManager->nWindowHeight) return FALSE;
}
//
// 2) Enforce overlap rules
//
GdkRegion* pNewRegion = gdk_region_rectangle(pRect);
gdk_region_intersect(pNewRegion, pSceneManager->pTakenRegion); // sets pNewRegion to the intersection of itself and the 'taken region'
gboolean bOK = gdk_region_empty(pNewRegion); // it's ok to draw here if the intersection is empty
gdk_region_destroy(pNewRegion);
return bOK;
}
static gint32
create_image (GdkPixbuf *pixbuf,
GdkRegion *shape,
const gchar *name)
{
gint32 image;
gint32 layer;
gdouble xres, yres;
gchar *comment;
gint width, height;
gboolean status;
status = gimp_progress_init (_("Importing screenshot"));
width = gdk_pixbuf_get_width (pixbuf);
height = gdk_pixbuf_get_height (pixbuf);
image = gimp_image_new (width, height, GIMP_RGB);
gimp_image_undo_disable (image);
gimp_get_monitor_resolution (&xres, &yres);
gimp_image_set_resolution (image, xres, yres);
comment = gimp_get_default_comment ();
if (comment)
{
GimpParasite *parasite;
parasite = gimp_parasite_new ("gimp-comment", GIMP_PARASITE_PERSISTENT,
strlen (comment) + 1, comment);
gimp_image_parasite_attach (image, parasite);
gimp_parasite_free (parasite);
g_free (comment);
}
layer = gimp_layer_new_from_pixbuf (image,
name ? name : _("Screenshot"),
pixbuf,
100, GIMP_NORMAL_MODE, 0.0, 1.0);
gimp_image_add_layer (image, layer, 0);
if (shape && ! gdk_region_empty (shape))
{
image_select_shape (image, shape);
if (! gimp_selection_is_empty (image))
{
gimp_layer_add_alpha (layer);
gimp_edit_clear (layer);
gimp_selection_none (image);
}
}
gimp_image_undo_enable (image);
return image;
}
bool wxRegion::IsEmpty() const
{
#ifdef __WXGTK3__
return m_refData == NULL || cairo_region_is_empty(M_REGIONDATA->m_region);
#else
return m_refData == NULL || gdk_region_empty(M_REGIONDATA->m_region);
#endif
}
/* Returns TRUE if the GdkRegion is empty. */
int
clip_GDK_REGIONEMPTY(ClipMachine * ClipMachineMemory)
{
C_object *creg = _fetch_co_arg(ClipMachineMemory);
CHECKCOBJ(creg, GDK_IS_REGION(creg->object));
_clip_retl(ClipMachineMemory, gdk_region_empty(GDK_REGION(creg)));
return 0;
err:
return 1;
}
static void _gegueb_window_draw(Gegueb_Window *thiz)
{
cairo_t *cr;
//gdk_window_begin_paint_region(thiz->win, thiz->regions);
cr = gdk_cairo_create(thiz->win);
gdk_cairo_region(cr, thiz->regions);
gegueb_document_draw(thiz->doc, cr, thiz->damages);
gdk_region_empty(thiz->regions);
//gdk_window_end_paint(thiz->win);
//gdk_window_flush(thiz->win);
cairo_destroy(cr);
thiz->damages = NULL;
}
static gint
gtk_form_expose(GtkWidget *widget, GdkEventExpose *event)
{
GList *tmp_list;
GtkForm *form;
g_return_val_if_fail(GTK_IS_FORM(widget), FALSE);
form = GTK_FORM(widget);
if (event->window == form->bin_window)
return FALSE;
for (tmp_list = form->children; tmp_list; tmp_list = tmp_list->next)
{
#ifdef HAVE_GTK2
GtkFormChild *formchild = tmp_list->data;
GtkWidget *child = formchild->widget;
/*
* The following chunk of code is taken from gtkcontainer.c. The
* gtk1.x code synthesized expose events directly on the child widgets,
* which can't be done in gtk2
*/
if (GTK_WIDGET_DRAWABLE(child) && GTK_WIDGET_NO_WINDOW(child)
&& child->window == event->window)
{
GdkEventExpose child_event;
child_event = *event;
child_event.region = gtk_widget_region_intersect(child, event->region);
if (!gdk_region_empty(child_event.region))
{
gdk_region_get_clipbox(child_event.region, &child_event.area);
gtk_widget_send_expose(child, (GdkEvent *)&child_event);
}
}
#else /* !HAVE_GTK2 */
GtkFormChild *child = tmp_list->data;
if (event->window == child->window)
return gtk_widget_event(child->widget, (GdkEvent *) event);
#endif /* !HAVE_GTK2 */
}
return FALSE;
}
gboolean scenemanager_can_draw_polygon(scenemanager_t* pSceneManager, GdkPoint *pPoints, gint nNumPoints, gint nFlags)
{
//
// 1) Enforce on-screen rules
//
if(nFlags & SCENEMANAGER_FLAG_FULLY_ON_SCREEN) {
// all points must be within screen box
gint i;
for(i=0 ; i<nNumPoints ; i++) {
GdkPoint* pPoint = &pPoints[i];
if(pPoint->x < 0 || pPoint->x > pSceneManager->nWindowWidth) return FALSE;
if(pPoint->y < 0 || pPoint->y > pSceneManager->nWindowHeight) return FALSE;
}
// else go on to test below
}
else if(nFlags & SCENEMANAGER_FLAG_PARTLY_ON_SCREEN) {
// one point must be withing screen box XXX: handle polygon bigger than window case?
gint i;
gboolean bFound = FALSE;
for(i=0 ; i<nNumPoints ; i++) {
GdkPoint* pPoint = &pPoints[i];
if(pPoint->x > 0 && pPoint->x < pSceneManager->nWindowWidth) {
bFound = TRUE;
break;
}
if(pPoint->y > 0 && pPoint->y < pSceneManager->nWindowHeight) {
bFound = TRUE;
break;
}
}
if(!bFound) return FALSE;
// else go on to test below
}
//
// 2) Enforce overlap rules
//
GdkRegion* pNewRegion = gdk_region_polygon(pPoints, nNumPoints, GDK_WINDING_RULE);
gdk_region_intersect(pNewRegion, pSceneManager->pTakenRegion); // sets pNewRegion to the intersection of itself and the 'taken region'
gboolean bOK = gdk_region_empty(pNewRegion); // it's ok to draw here if the intersection is empty
gdk_region_destroy(pNewRegion);
return bOK;
}
void
_gdk_window_process_expose (GdkWindow *window,
GdkRegion *invalidate_region)
{
GdkWindowImplWin32 *impl;
GdkRegion *clip_region;
impl = GDK_WINDOW_IMPL_WIN32 (GDK_WINDOW_OBJECT (window)->impl);
GDK_NOTE (EVENTS, g_print ("_gdk_window_process_expose: %p %s\n",
GDK_WINDOW_HWND (window),
_gdk_win32_gdkregion_to_string (invalidate_region)));
clip_region = gdk_region_rectangle (&impl->position_info.clip_rect);
gdk_region_intersect (invalidate_region, clip_region);
if (!gdk_region_empty (invalidate_region))
gdk_window_invalidate_region (window, invalidate_region, FALSE);
gdk_region_destroy (clip_region);
}
/* Draw handler for the pixbuf canvas item */
static void
foo_canvas_pixbuf_draw (FooCanvasItem *item, GdkDrawable *drawable,
GdkEventExpose *expose)
{
FooCanvasPixbuf *gcp;
PixbufPrivate *priv;
GdkRectangle display_rect, draw_rect;
GdkRegion *draw_region;
int w, h;
gcp = FOO_CANVAS_PIXBUF (item);
priv = gcp->priv;
if (!priv->pixbuf)
return;
/* Compute the area we need to repaint */
w = item->x2 - item->x1;
h = item->y2 - item->y1;
display_rect.x = item->x1;
display_rect.y = item->y1;
display_rect.width = w;
display_rect.height = h;
draw_region = gdk_region_rectangle (&display_rect);
gdk_region_intersect (draw_region, expose->region);
if (!gdk_region_empty (draw_region)) {
gdk_region_get_clipbox (draw_region, &draw_rect);
gdk_draw_pixbuf (drawable, NULL, priv->pixbuf_scaled,
/* pixbuf 0, 0 is at pix_rect.x, pix_rect.y */
draw_rect.x - display_rect.x,
draw_rect.y - display_rect.y,
draw_rect.x,
draw_rect.y,
draw_rect.width,
draw_rect.height,
GDK_RGB_DITHER_NORMAL, 0, 0);
}
gdk_region_destroy (draw_region);
}
static GdkRegion *
gdk_window_clip_changed (GdkWindow *window,
GdkRectangle *old_clip,
GdkRectangle *new_clip)
{
GdkWindowImplWin32 *impl;
GdkWindowObject *obj;
GdkRegion *old_clip_region;
GdkRegion *new_clip_region;
if (((GdkWindowObject *)window)->input_only)
return NULL;
obj = (GdkWindowObject *) window;
impl = GDK_WINDOW_IMPL_WIN32 (obj->impl);
old_clip_region = gdk_region_rectangle (old_clip);
new_clip_region = gdk_region_rectangle (new_clip);
/* Trim invalid region of window to new clip rectangle
*/
if (obj->update_area)
gdk_region_intersect (obj->update_area, new_clip_region);
/* Invalidate newly exposed portion of window
*/
gdk_region_subtract (new_clip_region, old_clip_region);
if (!gdk_region_empty (new_clip_region))
gdk_window_tmp_unset_bg (window);
else
{
gdk_region_destroy (new_clip_region);
new_clip_region = NULL;
}
gdk_region_destroy (old_clip_region);
return new_clip_region;
}
void GtkPluginWidget::paint(GraphicsContext* context, const IntRect& rect)
{
if (!context->gdkExposeEvent())
return;
/* only paint widgets with NO_WINDOW this way */
if (!GTK_WIDGET_NO_WINDOW(platformWidget()))
return;
GtkWidget* widget = platformWidget();
ASSERT(GTK_WIDGET_NO_WINDOW(widget));
GdkEvent* event = gdk_event_new(GDK_EXPOSE);
event->expose = *context->gdkExposeEvent();
event->expose.area = static_cast<GdkRectangle>(rect);
IntPoint loc = parent()->contentsToWindow(rect.location());
event->expose.area.x = loc.x();
event->expose.area.y = loc.y();
event->expose.region = gdk_region_rectangle(&event->expose.area);
/*
* This will be unref'ed by gdk_event_free.
*/
g_object_ref(event->expose.window);
/*
* If we are going to paint do the translation and GtkAllocation manipulation.
*/
if (!gdk_region_empty(event->expose.region))
gtk_widget_send_expose(widget, event);
gdk_event_free(event);
}
/* static */
void gdk_superwin_handle_expose (GdkSuperWin *superwin, XEvent *xevent,
GdkRegion **region, gboolean dont_recurse)
{
GSList *tmp_list;
gboolean send_event = TRUE;
unsigned long serial = xevent->xany.serial;
XEvent extra_event;
GdkRectangle rect;
GdkRegion *tmp_region = NULL;
gboolean is_special = TRUE;
/* set up our rect for the damaged area */
rect.x = xevent->xexpose.x;
rect.y = xevent->xexpose.y;
rect.width = xevent->xexpose.width;
rect.height = xevent->xexpose.height;
/* try to see if this is a special event that matches an antiexpose */
tmp_list = superwin->translate_queue;
while (tmp_list) {
GdkSuperWinTranslate *xlate = tmp_list->data;
if (xlate->type == GDK_SUPERWIN_ANTIEXPOSE && serial == xlate->serial) {
GdkRegion *antiexpose_region = gdk_region_new();
tmp_region = gdk_region_union_with_rect(antiexpose_region,
&xlate->data.antiexpose.rect);
gdk_region_destroy(antiexpose_region);
antiexpose_region = tmp_region;
/* if the rect of the expose event is contained in the
antiexpose then we should just drop it on the floor. */
if (gdk_region_rect_in(antiexpose_region, &rect) == GDK_OVERLAP_RECTANGLE_IN) {
gdk_region_destroy(antiexpose_region);
goto end;
}
gdk_region_destroy(antiexpose_region);
}
tmp_list = tmp_list->next;
}
/* we walk the list looking for any transformations */
tmp_list = superwin->translate_queue;
while (tmp_list) {
GdkSuperWinTranslate *xlate = tmp_list->data;
/* apply translations to this event if we can. */
if (xlate->type == GDK_SUPERWIN_TRANSLATION && serial < xlate->serial ) {
rect.x += xlate->data.translation.dx;
rect.y += xlate->data.translation.dy;
}
tmp_list = tmp_list->next;
}
/* add this expose area to our damaged rect */
tmp_region = gdk_region_union_with_rect(*region, &rect);
gdk_region_destroy(*region);
*region = tmp_region;
end:
/* remove any events from the queue that are old */
tmp_list = superwin->translate_queue;
while (tmp_list) {
GdkSuperWinTranslate *xlate = tmp_list->data;
if (serial > xlate->serial) {
GSList *tmp_link = tmp_list;
tmp_list = tmp_list->next;
superwin->translate_queue = g_slist_remove_link(superwin->translate_queue,
tmp_link);
g_free(tmp_link->data);
g_slist_free_1(tmp_link);
}
else {
tmp_list = tmp_list->next;
}
}
/* if we're not supposed to recurse or paint then return now */
if (dont_recurse)
return;
/* try to do any expose event compression we can */
while (XCheckTypedWindowEvent(xevent->xany.display,
xevent->xany.window,
Expose,
&extra_event) == True) {
gdk_superwin_handle_expose(superwin, &extra_event, region, TRUE);
}
/* if the region isn't empty, send the paint event */
if (gdk_region_empty(*region) == FALSE) {
GdkRectangle clip_box;
gdk_region_get_clipbox(*region, &clip_box);
if (superwin->paint_func)
superwin->paint_func(clip_box.x, clip_box.y,
clip_box.width, clip_box.height,
superwin->func_data);
}
}
static VALUE
rg_empty_p(VALUE self)
{
return CBOOL2RVAL(gdk_region_empty(_SELF(self)));
}
/* Doesn't handle HIPPO_WINDOW_STATE_ACTIVE - see comment below */
static HippoWindowState
get_window_state(Display *display, Window window)
{
HippoWindowState result = HIPPO_WINDOW_STATE_HIDDEN;
XWindowAttributes window_attributes;
GdkRectangle rect;
GdkRegion *visible_region = NULL;
Window child = None;
Window root;
Window parent;
Window *children = NULL;
guint n_children;
gdk_error_trap_push();
/* First check if the window and all ancestors are mapped
*/
if (!XGetWindowAttributes(display, window, &window_attributes)) {
g_debug("XGetWindowAttributes failed\n");
goto out;
}
if (window_attributes.map_state != IsViewable)
goto out;
/* Get the area of the window in parent coordinates
*/
rect.x = window_attributes.x;
rect.y = window_attributes.y;
rect.width = window_attributes.width;
rect.height = window_attributes.height;
visible_region = gdk_region_rectangle(&rect);
if (!XQueryTree(display, window, &root, &parent, &children, &n_children)) {
g_debug("XQueryTree failed\n");
goto out;
}
XFree(children);
children = NULL;
child = window;
window = parent;
/* Walk up the hierarchy, clipping to parents, and subtracting
* overlayed siblings (yuck!)
*/
while (TRUE) {
GdkRegion *parent_region;
gboolean seen_child = FALSE;
int x, y;
unsigned int width, height, border, depth;
unsigned int i;
gdk_region_get_clipbox(visible_region, &rect);
/* Clip to parent */
if (!XGetGeometry(display, window, &root, &x, &y, &width, &height, &border, &depth)) {
g_debug("XGetGeometry failed\n");
goto out;
}
rect.x = 0;
rect.y = 0;
rect.width = width;
rect.height= height;
parent_region = gdk_region_rectangle(&rect);
gdk_region_intersect(visible_region, parent_region);
gdk_region_destroy(parent_region);
if (gdk_region_empty(visible_region))
goto out;
if (!XQueryTree(display, window, &root, &parent, &children, &n_children)) {
g_debug("XQueryTree failed\n");
goto out;
}
for (i = 0; i < n_children; i++) {
if (seen_child) {
/* A sibling above */
GdkRegion *child_region;
XWindowAttributes child_attributes;
if (!XGetWindowAttributes(display, children[i], &child_attributes)) {
g_debug("XGetWindowAttributes failed for child\n");
goto out;
}
if (child_attributes.map_state == IsViewable) {
rect.x = child_attributes.x - child_attributes.border_width;
rect.y = child_attributes.y - child_attributes.border_width;
rect.width = child_attributes.width + 2 * child_attributes.border_width;
rect.height = child_attributes.height + 2 * child_attributes.border_width;
child_region = gdk_region_rectangle(&rect);
gdk_region_subtract(visible_region, child_region);
gdk_region_destroy(child_region);
if (gdk_region_empty(visible_region))
goto out;
}
} else if (children[i] == child) {
seen_child = TRUE;
}
}
XFree(children);
children = NULL;
if (window == root)
break;
child = window;
window = parent;
/* Translate to parent coordinates */
gdk_region_offset(visible_region, x, y);
}
if (!gdk_region_empty(visible_region))
result = HIPPO_WINDOW_STATE_ONSCREEN;
out:
gdk_error_trap_pop();
if (children)
XFree(children);
if (visible_region)
gdk_region_destroy(visible_region);
return result;
}
