QWindow *QWindowsAccessibility::windowHelper(const QAccessibleInterface *iface)
{
QWindow *window = iface->window();
if (!window) {
QAccessibleInterface *acc = iface->parent();
while (acc && acc->isValid() && !window) {
window = acc->window();
QAccessibleInterface *par = acc->parent();
acc = par;
}
}
return window;
}
static jint parentId(JNIEnv */*env*/, jobject /*thiz*/, jint objectId)
{
QAccessibleInterface *iface = interfaceFromId(objectId);
if (iface) {
QAccessibleInterface *parent = iface->parent();
if (parent) {
if (parent->role() == QAccessible::Application)
return -1;
return QAccessible::uniqueId(parent);
}
}
return -1;
}
static QWindow *window_helper(const QAccessibleInterface *iface)
{
QWindow *window = iface->window();
if (!window) {
QAccessibleInterface *acc = iface->parent();
while (acc && !window) {
window = acc->window();
QAccessibleInterface *par = acc->parent();
delete acc;
acc = par;
}
}
return window;
}
// moz: [important]
HRESULT STDMETHODCALLTYPE QWindowsAccessible::get_accParent(IDispatch** ppdispParent)
{
showDebug(__FUNCTION__, accessible);
if (!accessible->isValid())
return E_FAIL;
QAccessibleInterface *acc = accessible->parent();
if (acc) {
QWindowsAccessible* wacc = new QWindowsAccessible(acc);
wacc->QueryInterface(IID_IDispatch, (void**)ppdispParent);
if (*ppdispParent)
return S_OK;
}
*ppdispParent = 0;
return S_FALSE;
}
// moz: [important]
HRESULT STDMETHODCALLTYPE QWindowsMsaaAccessible::get_accParent(IDispatch** ppdispParent)
{
QAccessibleInterface *accessible = accessibleInterface();
accessibleDebugClientCalls(accessible);
if (!accessible)
return E_FAIL;
QAccessibleInterface *acc = accessible->parent();
if (acc) {
if (IAccessible *iface = QWindowsAccessibility::wrap(acc)) {
*ppdispParent = iface;
return S_OK;
}
}
*ppdispParent = 0;
return S_FALSE;
}
// moz: [important, but no need to implement up/down/left/right]
HRESULT STDMETHODCALLTYPE QWindowsAccessible::accNavigate(long navDir, VARIANT varStart, VARIANT *pvarEnd)
{
showDebug(__FUNCTION__, accessible);
if (!accessible->isValid())
return E_FAIL;
QAccessibleInterface *acc = 0;
switch (navDir) {
case NAVDIR_FIRSTCHILD:
acc = accessible->child(0);
break;
case NAVDIR_LASTCHILD:
acc = accessible->child(accessible->childCount() - 1);
break;
case NAVDIR_NEXT:
case NAVDIR_PREVIOUS:
if (!varStart.lVal){
QAccessibleInterface *parent = accessible->parent();
if (parent) {
int index = parent->indexOfChild(accessible);
index += (navDir == NAVDIR_NEXT) ? 1 : -1;
if (index >= 0 && index < parent->childCount())
acc = parent->child(index);
delete parent;
}
} else {
int index = varStart.lVal;
index += (navDir == NAVDIR_NEXT) ? 1 : -1;
if (index > 0 && index <= accessible->childCount())
acc = accessible->child(index - 1);
}
break;
// Geometrical
case NAVDIR_UP:
case NAVDIR_DOWN:
case NAVDIR_LEFT:
case NAVDIR_RIGHT:
if (QAccessibleInterface *pIface = accessible->parent()) {
QRect startg = accessible->rect();
QPoint startc = startg.center();
QAccessibleInterface *candidate = 0;
unsigned mindist = UINT_MAX; // will work on screen sizes at least up to 46340x46340
const int sibCount = pIface->childCount();
for (int i = 0; i < sibCount; ++i) {
QAccessibleInterface *sibling = 0;
sibling = pIface->child(i);
Q_ASSERT(sibling);
if ((accessible->relationTo(sibling) & QAccessible::Self) || sibling->state().invisible) {
//ignore ourself and invisible siblings
delete sibling;
continue;
}
QRect sibg = sibling->rect();
QPoint sibc = sibg.center();
QPoint sibp;
QPoint startp;
QPoint distp;
switch (navDir) {
case NAVDIR_LEFT:
startp = QPoint(startg.left(), startg.top() + startg.height() / 2);
sibp = QPoint(sibg.right(), sibg.top() + sibg.height() / 2);
if (QPoint(sibc - startc).x() >= 0) {
delete sibling;
continue;
}
distp = sibp - startp;
break;
case NAVDIR_RIGHT:
startp = QPoint(startg.right(), startg.top() + startg.height() / 2);
sibp = QPoint(sibg.left(), sibg.top() + sibg.height() / 2);
if (QPoint(sibc - startc).x() <= 0) {
delete sibling;
continue;
}
distp = sibp - startp;
break;
case NAVDIR_UP:
startp = QPoint(startg.left() + startg.width() / 2, startg.top());
sibp = QPoint(sibg.left() + sibg.width() / 2, sibg.bottom());
if (QPoint(sibc - startc).y() >= 0) {
delete sibling;
continue;
}
distp = sibp - startp;
break;
case NAVDIR_DOWN:
startp = QPoint(startg.left() + startg.width() / 2, startg.bottom());
sibp = QPoint(sibg.left() + sibg.width() / 2, sibg.top());
if (QPoint(sibc - startc).y() <= 0) {
delete sibling;
continue;
}
distp = sibp - startp;
break;
default:
break;
}
// Since we're *comparing* (and not measuring) distances, we can compare the
// squared distance, (thus, no need to take the sqrt()).
unsigned dist = distp.x() * distp.x() + distp.y() * distp.y();
if (dist < mindist) {
delete candidate;
candidate = sibling;
mindist = dist;
} else {
delete sibling;
}
}
delete pIface;
acc = candidate;
}
break;
default:
break;
}
if (!acc) {
(*pvarEnd).vt = VT_EMPTY;
return S_FALSE;
}
QWindowsAccessible* wacc = new QWindowsAccessible(acc);
IDispatch *iface = 0;
wacc->QueryInterface(IID_IDispatch, (void**)&iface);
if (iface) {
(*pvarEnd).vt = VT_DISPATCH;
(*pvarEnd).pdispVal = iface;
return S_OK;
} else {
delete wacc;
}
(*pvarEnd).vt = VT_EMPTY;
return S_FALSE;
}