/*
IAccessible
IAccessible::accHitTest documents the value returned in pvarID like this:
| *Point location* | *vt member* | *Value member* |
+========================================================+=============+=========================+
| Outside of the object's boundaries, and either inside | VT_EMPTY | None. |
| or outside of the object's bounding rectangle. | | |
+--------------------------------------------------------+-------------+-------------------------+
| Within the object but not within a child element or a | VT_I4 | lVal is CHILDID_SELF |
| child object. | | |
+--------------------------------------------------------+-------------+-------------------------+
| Within a child element. | VT_I4 | lVal contains |
| | | the child ID. |
+--------------------------------------------------------+-------------+-------------------------+
| Within a child object. | VT_DISPATCH | pdispVal is set to the |
| | | child object's IDispatch|
| | | interface pointer |
+--------------------------------------------------------+-------------+-------------------------+
*/
HRESULT STDMETHODCALLTYPE QWindowsMsaaAccessible::accHitTest(long xLeft, long yTop, VARIANT *pvarID)
{
QAccessibleInterface *accessible = accessibleInterface();
accessibleDebugClientCalls(accessible);
if (!accessible)
return E_FAIL;
QAccessibleInterface *child = accessible->childAt(xLeft, yTop);
if (child == 0) {
// no child found, return this item if it contains the coordinates
if (accessible->rect().contains(xLeft, yTop)) {
(*pvarID).vt = VT_I4;
(*pvarID).lVal = CHILDID_SELF;
return S_OK;
}
} else {
IAccessible *iface = QWindowsAccessibility::wrap(child);
if (iface) {
(*pvarID).vt = VT_DISPATCH;
(*pvarID).pdispVal = iface;
return S_OK;
}
}
// Did not find anything
(*pvarID).vt = VT_EMPTY;
return S_FALSE;
}
HRESULT STDMETHODCALLTYPE QWindowsMsaaAccessible::get_accDescription(VARIANT varID, BSTR* pszDescription)
{
QAccessibleInterface *accessible = accessibleInterface();
accessibleDebugClientCalls(accessible);
if (!accessible)
return E_FAIL;
QString descr;
if (varID.lVal) {
QAccessibleInterface *child = childPointer(accessible, varID);
if (!child)
return E_FAIL;
descr = child->text(QAccessible::Description);
} else {
descr = accessible->text(QAccessible::Description);
}
if (descr.size()) {
*pszDescription = QStringToBSTR(descr);
return S_OK;
}
*pszDescription = 0;
return S_FALSE;
}
/**************************************************************\
* *
* IUnknown *
* *
**************************************************************/
HRESULT STDMETHODCALLTYPE QWindowsMsaaAccessible::QueryInterface(REFIID id, LPVOID *iface)
{
*iface = 0;
QByteArray strIID = IIDToString(id);
if (!strIID.isEmpty()) {
QString ss;
QDebug dbg(&ss);
dbg << accessibleInterface();
accessibleDebug("QWindowsIA2Accessible::QI() - IID:%s, iface:%s ", strIID.constData(), qPrintable(ss));
}
if (id == IID_IUnknown) {
*iface = (IUnknown*)(IDispatch*)this;
} else if (id == IID_IDispatch) {
*iface = (IDispatch*)this;
} else if (id == IID_IAccessible) {
*iface = (IAccessible*)this;
} else if (id == IID_IOleWindow) {
*iface = (IOleWindow*)this;
}
if (*iface) {
AddRef();
return S_OK;
}
return E_NOINTERFACE;
}
// moz: [important]
HRESULT STDMETHODCALLTYPE QWindowsMsaaAccessible::get_accName(VARIANT varID, BSTR* pszName)
{
QAccessibleInterface *accessible = accessibleInterface();
accessibleDebugClientCalls(accessible);
if (!accessible)
return E_FAIL;
QString name;
if (varID.lVal) {
QAccessibleInterface *child = childPointer(accessible, varID);
if (!child)
return E_FAIL;
name = child->text(QAccessible::Name);
if (name.isEmpty()) {
if (QAccessibleInterface *labelInterface = relatedInterface(child, QAccessible::Label)) {
name = labelInterface->text(QAccessible::Name);
}
}
} else {
name = accessible->text(QAccessible::Name);
if (name.isEmpty()) {
if (QAccessibleInterface *labelInterface = relatedInterface(accessible, QAccessible::Label)) {
name = labelInterface->text(QAccessible::Name);
}
}
}
if (name.size()) {
*pszName = QStringToBSTR(name);
return S_OK;
}
*pszName = 0;
return S_FALSE;
}
// moz: [important]
HRESULT STDMETHODCALLTYPE QWindowsMsaaAccessible::get_accRole(VARIANT varID, VARIANT *pvarRole)
{
QAccessibleInterface *accessible = accessibleInterface();
accessibleDebugClientCalls(accessible);
if (!accessible)
return E_FAIL;
QAccessible::Role role;
if (varID.lVal) {
QAccessibleInterface *child = childPointer(accessible, varID);
if (!child)
return E_FAIL;
role = child->role();
} else {
role = accessible->role();
}
if (role != QAccessible::NoRole) {
if (role >= QAccessible::LayeredPane) {
// This block should hopefully only be entered if the AT client
// does not support IAccessible2, since it should prefer IA2::role() then.
if (role == QAccessible::LayeredPane)
role = QAccessible::Pane;
else
role = QAccessible::Client;
}
(*pvarRole).vt = VT_I4;
(*pvarRole).lVal = role;
} else {
(*pvarRole).vt = VT_EMPTY;
}
return S_OK;
}
// moz: [important]
HRESULT STDMETHODCALLTYPE QWindowsMsaaAccessible::accSelect(long flagsSelect, VARIANT varID)
{
Q_UNUSED(flagsSelect);
Q_UNUSED(varID);
QAccessibleInterface *accessible = accessibleInterface();
accessibleDebugClientCalls(accessible);
if (!accessible)
return E_FAIL;
bool res = false;
/*
### Check for accessibleTableInterface() or accessibleTextInterface()
### and if there are no ia2 interfaces we should do nothing??
if (flagsSelect & SELFLAG_TAKEFOCUS)
res = accessible()->doAction(SetFocus, varID.lVal, QVariantList());
if (flagsSelect & SELFLAG_TAKESELECTION) {
accessible()->doAction(ClearSelection, 0, QVariantList());
res = accessible()->doAction(AddToSelection, varID.lVal, QVariantList());
}
if (flagsSelect & SELFLAG_EXTENDSELECTION)
res = accessible()->doAction(ExtendSelection, varID.lVal, QVariantList());
if (flagsSelect & SELFLAG_ADDSELECTION)
res = accessible()->doAction(AddToSelection, varID.lVal, QVariantList());
if (flagsSelect & SELFLAG_REMOVESELECTION)
res = accessible()->doAction(RemoveSelection, varID.lVal, QVariantList());
*/
return res ? S_OK : S_FALSE;
}
// moz: [important]
HRESULT STDMETHODCALLTYPE QWindowsMsaaAccessible::get_accValue(VARIANT varID, BSTR* pszValue)
{
QAccessibleInterface *accessible = accessibleInterface();
accessibleDebugClientCalls(accessible);
if (varID.vt != VT_I4)
return E_INVALIDARG;
if (!accessible || !accessible->isValid() || varID.lVal) {
return E_FAIL;
}
QString value;
if (accessible->valueInterface()) {
value = QString::number(accessible->valueInterface()->currentValue().toDouble());
} else {
value = accessible->text(QAccessible::Value);
}
if (!value.isNull()) {
*pszValue = QStringToBSTR(value);
return S_OK;
}
*pszValue = 0;
accessibleDebug("return S_FALSE");
return S_FALSE;
}
/**************************************************************\
* *
* IUnknown *
* *
**************************************************************/
HRESULT STDMETHODCALLTYPE QWindowsMsaaAccessible::QueryInterface(REFIID id, LPVOID *iface)
{
*iface = 0;
QByteArray strIID = IIDToString(id);
if (!strIID.isEmpty()) {
qCDebug(lcQpaAccessibility) << "QWindowsIA2Accessible::QI() - IID:"
<< strIID << ", iface:" << accessibleInterface();
}
if (id == IID_IUnknown) {
*iface = (IUnknown*)(IDispatch*)this;
} else if (id == IID_IDispatch) {
*iface = (IDispatch*)this;
} else if (id == IID_IAccessible) {
*iface = (IAccessible*)this;
} else if (id == IID_IOleWindow) {
*iface = (IOleWindow*)this;
}
if (*iface) {
AddRef();
return S_OK;
}
return E_NOINTERFACE;
}
// moz: [important]
HRESULT STDMETHODCALLTYPE QWindowsMsaaAccessible::get_accChildCount(long* pcountChildren)
{
QAccessibleInterface *accessible = accessibleInterface();
accessibleDebugClientCalls(accessible);
if (!accessible)
return E_FAIL;
*pcountChildren = accessible->childCount();
return S_OK;
}
HRESULT STDMETHODCALLTYPE QWindowsMsaaAccessible::get_accDefaultAction(VARIANT varID, BSTR* pszDefaultAction)
{
Q_UNUSED(varID);
QAccessibleInterface *accessible = accessibleInterface();
accessibleDebugClientCalls(accessible);
if (!accessible)
return E_FAIL;
*pszDefaultAction = 0;
if (QAccessibleActionInterface *actionIface = accessible->actionInterface()) {
const QString def = actionIface->actionNames().value(0);
if (!def.isEmpty())
*pszDefaultAction = QStringToBSTR(def);
}
return *pszDefaultAction ? S_OK : S_FALSE;
}
/*
Properties and methods
*/
HRESULT STDMETHODCALLTYPE QWindowsMsaaAccessible::accDoDefaultAction(VARIANT varID)
{
Q_UNUSED(varID);
QAccessibleInterface *accessible = accessibleInterface();
accessibleDebugClientCalls(accessible);
if (!accessible)
return E_FAIL;
if (QAccessibleActionInterface *actionIface = accessible->actionInterface()) {
const QString def = actionIface->actionNames().value(0);
if (!def.isEmpty()) {
actionIface->doAction(def);
return S_OK;
}
}
return S_FALSE;
}
/**************************************************************\
* IOleWindow *
**************************************************************/
HRESULT STDMETHODCALLTYPE QWindowsMsaaAccessible::GetWindow(HWND *phwnd)
{
*phwnd = 0;
QAccessibleInterface *accessible = accessibleInterface();
accessibleDebugClientCalls(accessible);
if (!accessible)
return E_FAIL;
QWindow *window = QWindowsAccessibility::windowHelper(accessible);
if (!window)
return E_FAIL;
QPlatformNativeInterface *platform = QGuiApplication::platformNativeInterface();
Q_ASSERT(platform);
*phwnd = (HWND)platform->nativeResourceForWindow("handle", window);
accessibleDebug("QWindowsAccessible::GetWindow(): %p", *phwnd);
return S_OK;
}
// 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]
HRESULT STDMETHODCALLTYPE QWindowsMsaaAccessible::get_accChild(VARIANT varChildID, IDispatch** ppdispChild)
{
QAccessibleInterface *accessible = accessibleInterface();
accessibleDebugClientCalls(accessible);
if (!accessible)
return E_FAIL;
if (varChildID.vt != VT_I4)
return E_INVALIDARG;
QAccessibleInterface *acc = childPointer(accessible, varChildID);
if (acc) {
*ppdispChild = QWindowsAccessibility::wrap(acc);
return S_OK;
}
return E_FAIL;
}
HRESULT STDMETHODCALLTYPE QWindowsMsaaAccessible::get_accKeyboardShortcut(VARIANT varID, BSTR *pszKeyboardShortcut)
{
Q_UNUSED(varID);
QAccessibleInterface *accessible = accessibleInterface();
accessibleDebugClientCalls(accessible);
if (!accessible)
return E_FAIL;
*pszKeyboardShortcut = 0;
if (QAccessibleActionInterface *actionIface = accessible->actionInterface()) {
const QString def = actionIface->actionNames().value(0);
if (!def.isEmpty()) {
const QString keyBoardShortCut = actionIface->keyBindingsForAction(def).value(0);
if (!keyBoardShortCut.isEmpty())
*pszKeyboardShortcut = QStringToBSTR(keyBoardShortCut);
}
}
return *pszKeyboardShortcut ? S_OK : S_FALSE;
}
// moz: [important]
HRESULT STDMETHODCALLTYPE QWindowsMsaaAccessible::accLocation(long *pxLeft, long *pyTop, long *pcxWidth, long *pcyHeight, VARIANT varID)
{
QAccessibleInterface *accessible = accessibleInterface();
accessibleDebugClientCalls(accessible);
if (!accessible)
return E_FAIL;
QAccessibleInterface *acc = childPointer(accessible, varID);
if (!acc || !acc->isValid())
return E_FAIL;
const QRect rect = acc->rect();
*pxLeft = rect.x();
*pyTop = rect.y();
*pcxWidth = rect.width();
*pcyHeight = rect.height();
return S_OK;
}
/*!
\internal
Can return:
+-------------+------------------------------------------------------------------------------+
| VT_EMPTY | None. Neither this object nor any of its children has the keyboard focus. |
+-------------+------------------------------------------------------------------------------+
| VT_I4 | lVal is CHILDID_SELF. The object itself has the keyboard focus. |
+-------------+------------------------------------------------------------------------------+
| VT_I4 | lVal contains the child ID of the child element that has the keyboard focus. |
+-------------+------------------------------------------------------------------------------+
| VT_DISPATCH | pdispVal member is the address of the IDispatch interface for the child |
| | object that has the keyboard focus. |
+-------------+------------------------------------------------------------------------------+
moz: [important]
*/
HRESULT STDMETHODCALLTYPE QWindowsMsaaAccessible::get_accFocus(VARIANT *pvarID)
{
QAccessibleInterface *accessible = accessibleInterface();
accessibleDebugClientCalls(accessible);
if (!accessible)
return E_FAIL;
if (QAccessibleInterface *acc = accessible->focusChild()) {
if (acc == accessible) {
(*pvarID).vt = VT_I4;
(*pvarID).lVal = CHILDID_SELF;
return S_OK;
} else {
if (IAccessible *iface = QWindowsAccessibility::wrap(acc)) {
(*pvarID).vt = VT_DISPATCH;
(*pvarID).pdispVal = iface;
return S_OK;
}
}
}
(*pvarID).vt = VT_EMPTY;
return S_FALSE;
}
HRESULT STDMETHODCALLTYPE QWindowsMsaaAccessible::get_accSelection(VARIANT *pvarChildren)
{
QAccessibleInterface *accessible = accessibleInterface();
accessibleDebugClientCalls(accessible);
if (!accessible)
return E_FAIL;
int cc = accessible->childCount();
QVector<int> sel(cc);
int selIndex = 0;
for (int i = 0; i < cc; ++i) {
bool isSelected = false;
QAccessibleInterface *child = accessible->child(i);
if (child) {
isSelected = child->state().selected;
}
if (isSelected)
sel[selIndex++] = i+1;
}
sel.resize(selIndex);
if (sel.isEmpty()) {
(*pvarChildren).vt = VT_EMPTY;
return S_FALSE;
}
if (sel.size() == 1) {
(*pvarChildren).vt = VT_I4;
(*pvarChildren).lVal = sel[0];
return S_OK;
}
IEnumVARIANT *iface = new QWindowsEnumerate(sel);
IUnknown *uiface;
iface->QueryInterface(IID_IUnknown, (void**)&uiface);
(*pvarChildren).vt = VT_UNKNOWN;
(*pvarChildren).punkVal = uiface;
return S_OK;
}
HRESULT STDMETHODCALLTYPE QWindowsMsaaAccessible::get_accHelp(VARIANT varID, BSTR *pszHelp)
{
QAccessibleInterface *accessible = accessibleInterface();
accessibleDebugClientCalls(accessible);
if (!accessible)
return E_FAIL;
QString help;
if (varID.lVal) {
QAccessibleInterface *child = childPointer(accessible, varID);
if (!child)
return E_FAIL;
help = child->text(QAccessible::Help);
} else {
help = accessible->text(QAccessible::Help);
}
if (help.size()) {
*pszHelp = QStringToBSTR(help);
return S_OK;
}
*pszHelp = 0;
return S_FALSE;
}
// moz: [important]
HRESULT STDMETHODCALLTYPE QWindowsMsaaAccessible::get_accState(VARIANT varID, VARIANT *pvarState)
{
QAccessibleInterface *accessible = accessibleInterface();
accessibleDebugClientCalls(accessible);
if (!accessible)
return E_FAIL;
QAccessible::State state;
if (varID.lVal) {
QAccessibleInterface *child = childPointer(accessible, varID);
if (!child)
return E_FAIL;
state = child->state();
} else {
state = accessible->state();
}
LONG st = 0;
if (state.animated)
st |= STATE_SYSTEM_ANIMATED;
if (state.busy)
st |= STATE_SYSTEM_BUSY;
if (state.checked)
st |= STATE_SYSTEM_CHECKED;
if (state.collapsed)
st |= STATE_SYSTEM_COLLAPSED;
if (state.defaultButton)
st |= STATE_SYSTEM_DEFAULT;
if (state.expanded)
st |= STATE_SYSTEM_EXPANDED;
if (state.extSelectable)
st |= STATE_SYSTEM_EXTSELECTABLE;
if (state.focusable)
st |= STATE_SYSTEM_FOCUSABLE;
if (state.focused)
st |= STATE_SYSTEM_FOCUSED;
if (state.hasPopup)
st |= STATE_SYSTEM_HASPOPUP;
if (state.hotTracked)
st |= STATE_SYSTEM_HOTTRACKED;
if (state.invisible)
st |= STATE_SYSTEM_INVISIBLE;
if (state.linked)
st |= STATE_SYSTEM_LINKED;
if (state.marqueed)
st |= STATE_SYSTEM_MARQUEED;
if (state.checkStateMixed)
st |= STATE_SYSTEM_MIXED;
if (state.movable)
st |= STATE_SYSTEM_MOVEABLE;
if (state.multiSelectable)
st |= STATE_SYSTEM_MULTISELECTABLE;
if (state.offscreen)
st |= STATE_SYSTEM_OFFSCREEN;
if (state.pressed)
st |= STATE_SYSTEM_PRESSED;
if (state.passwordEdit)
st |= STATE_SYSTEM_PROTECTED;
if (state.readOnly)
st |= STATE_SYSTEM_READONLY;
if (state.selectable)
st |= STATE_SYSTEM_SELECTABLE;
if (state.selected)
st |= STATE_SYSTEM_SELECTED;
if (state.selfVoicing)
st |= STATE_SYSTEM_SELFVOICING;
if (state.sizeable)
st |= STATE_SYSTEM_SIZEABLE;
if (state.traversed)
st |= STATE_SYSTEM_TRAVERSED;
(*pvarState).vt = VT_I4;
(*pvarState).lVal = st;
return S_OK;
}
HRESULT STDMETHODCALLTYPE QWindowsMsaaAccessible::put_accName(VARIANT, BSTR)
{
QAccessibleInterface *accessible = accessibleInterface();
accessibleDebugClientCalls(accessible);
return DISP_E_MEMBERNOTFOUND;
}
// moz: [important, but no need to implement up/down/left/right]
HRESULT STDMETHODCALLTYPE QWindowsMsaaAccessible::accNavigate(long navDir, VARIANT varStart, VARIANT *pvarEnd)
{
QAccessibleInterface *accessible = accessibleInterface();
accessibleDebugClientCalls(accessible);
if (!accessible)
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 && parent->isValid()) {
int index = parent->indexOfChild(accessible);
index += (navDir == NAVDIR_NEXT) ? 1 : -1;
if (index >= 0 && index < parent->childCount())
acc = parent->child(index);
}
} 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: {
QAccessibleInterface *pIface = accessible->parent();
if (pIface && pIface->isValid()) {
const int indexOfOurself = pIface->indexOfChild(accessible);
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 (i == indexOfOurself || sibling->state().invisible) {
//ignore ourself and invisible siblings
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) {
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) {
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) {
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) {
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) {
candidate = sibling;
mindist = dist;
}
}
acc = candidate;
}
}
break;
default:
break;
}
if (!acc) {
(*pvarEnd).vt = VT_EMPTY;
return S_FALSE;
}
if (IAccessible *iface = QWindowsAccessibility::wrap(acc)) {
(*pvarEnd).vt = VT_DISPATCH;
(*pvarEnd).pdispVal = iface;
return S_OK;
}
(*pvarEnd).vt = VT_EMPTY;
return S_FALSE;
}
