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/*
* Copyright (C) 2021 Igalia S.L.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public License
* along with this library; see the file COPYING.LIB. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#include "config.h"
#include "AccessibilityObjectAtspi.h"
#if USE(ATSPI)
#include "AccessibilityAtspi.h"
#include "AccessibilityAtspiEnums.h"
#include "AccessibilityObject.h"
#include "AXCoreObject.h"
#include "Document.h"
#include "LocalFrameView.h"
#include "RenderLayer.h"
#include "RenderStyleInlines.h"
namespace WebCore {
GDBusInterfaceVTable AccessibilityObjectAtspi::s_componentFunctions = {
// method_call
[](GDBusConnection*, const gchar*, const gchar*, const gchar*, const gchar* methodName, GVariant* parameters, GDBusMethodInvocation* invocation, gpointer userData) {
auto atspiObject = Ref { *static_cast<AccessibilityObjectAtspi*>(userData) };
atspiObject->updateBackingStore();
if (!g_strcmp0(methodName, "Contains")) {
int x, y;
uint32_t coordinateType;
g_variant_get(parameters, "(iiu)", &x, &y, &coordinateType);
g_dbus_method_invocation_return_value(invocation, g_variant_new("(b)", !!atspiObject->hitTest({ x, y }, static_cast<Atspi::CoordinateType>(coordinateType))));
} else if (!g_strcmp0(methodName, "GetAccessibleAtPoint")) {
int x, y;
uint32_t coordinateType;
g_variant_get(parameters, "(iiu)", &x, &y, &coordinateType);
auto* wrapper = atspiObject->hitTest({ x, y }, static_cast<Atspi::CoordinateType>(coordinateType));
g_dbus_method_invocation_return_value(invocation, g_variant_new("(@(so))", wrapper ? wrapper->reference() : AccessibilityAtspi::singleton().nullReference()));
} else if (!g_strcmp0(methodName, "GetExtents")) {
uint32_t coordinateType;
g_variant_get(parameters, "(u)", &coordinateType);
auto rect = atspiObject->elementRect(static_cast<Atspi::CoordinateType>(coordinateType));
g_dbus_method_invocation_return_value(invocation, g_variant_new("((iiii))", rect.x(), rect.y(), rect.width(), rect.height()));
} else if (!g_strcmp0(methodName, "GetPosition")) {
uint32_t coordinateType;
g_variant_get(parameters, "(u)", &coordinateType);
auto rect = atspiObject->elementRect(static_cast<Atspi::CoordinateType>(coordinateType));
g_dbus_method_invocation_return_value(invocation, g_variant_new("(ii)", rect.x(), rect.y()));
} else if (!g_strcmp0(methodName, "GetSize")) {
auto rect = atspiObject->elementRect(Atspi::CoordinateType::ParentCoordinates);
g_dbus_method_invocation_return_value(invocation, g_variant_new("(ii)", rect.width(), rect.height()));
} else if (!g_strcmp0(methodName, "GetLayer"))
g_dbus_method_invocation_return_value(invocation, g_variant_new("(u)", static_cast<uint32_t>(Atspi::ComponentLayer::WidgetLayer)));
else if (!g_strcmp0(methodName, "GetMDIZOrder"))
g_dbus_method_invocation_return_value(invocation, g_variant_new("(n)", 0));
else if (!g_strcmp0(methodName, "GrabFocus"))
g_dbus_method_invocation_return_value(invocation, g_variant_new("(b)", atspiObject->focus()));
else if (!g_strcmp0(methodName, "GetAlpha"))
g_dbus_method_invocation_return_value(invocation, g_variant_new("(d)", atspiObject->opacity()));
else if (!g_strcmp0(methodName, "ScrollTo")) {
uint32_t scrollType;
g_variant_get(parameters, "(u)", &scrollType);
atspiObject->scrollToMakeVisible(static_cast<Atspi::ScrollType>(scrollType));
g_dbus_method_invocation_return_value(invocation, g_variant_new("(b)", TRUE));
} else if (!g_strcmp0(methodName, "ScrollToPoint")) {
int x, y;
uint32_t coordinateType;
g_variant_get(parameters, "(uii)", &coordinateType, &x, &y);
atspiObject->scrollToPoint({ x, y }, static_cast<Atspi::CoordinateType>(coordinateType));
g_dbus_method_invocation_return_value(invocation, g_variant_new("(b)", TRUE));
} else if (!g_strcmp0(methodName, "SetExtents") || !g_strcmp0(methodName, "SetPosition") || !g_strcmp0(methodName, "SetSize"))
g_dbus_method_invocation_return_error_literal(invocation, G_DBUS_ERROR, G_DBUS_ERROR_NOT_SUPPORTED, "");
},
// get_property
nullptr,
// set_property,
nullptr,
// padding
{ nullptr }
};
AccessibilityObjectAtspi* AccessibilityObjectAtspi::hitTest(const IntPoint& point, Atspi::CoordinateType coordinateType) const
{
if (!m_coreObject)
return nullptr;
IntPoint convertedPoint = point;
if (auto* frameView = m_coreObject->documentFrameView()) {
switch (coordinateType) {
case Atspi::CoordinateType::ScreenCoordinates:
convertedPoint = frameView->screenToContents(point);
break;
case Atspi::CoordinateType::WindowCoordinates:
convertedPoint = frameView->windowToContents(point);
break;
case Atspi::CoordinateType::ParentCoordinates:
break;
}
}
if (auto* axObject = dynamicDowncast<AccessibilityObject>(m_coreObject.get()))
axObject->updateChildrenIfNecessary();
if (auto* coreObject = m_coreObject->accessibilityHitTest(convertedPoint))
return coreObject->wrapper();
return nullptr;
}
IntRect AccessibilityObjectAtspi::elementRect(Atspi::CoordinateType coordinateType) const
{
if (!m_coreObject)
return { };
auto rect = snappedIntRect(m_coreObject->elementRect());
auto* frameView = m_coreObject->documentFrameView();
if (!frameView)
return rect;
switch (coordinateType) {
case Atspi::CoordinateType::ScreenCoordinates:
return frameView->contentsToScreen(rect);
case Atspi::CoordinateType::WindowCoordinates:
return frameView->contentsToWindow(rect);
case Atspi::CoordinateType::ParentCoordinates:
return rect;
}
RELEASE_ASSERT_NOT_REACHED();
}
bool AccessibilityObjectAtspi::focus() const
{
if (!m_coreObject)
return false;
m_coreObject->setFocused(true);
m_coreObject->updateBackingStore();
return m_coreObject->isFocused();
}
float AccessibilityObjectAtspi::opacity() const
{
if (!m_coreObject)
return 1;
if (auto* renderer = m_coreObject->renderer())
return renderer->style().opacity();
return 1;
}
void AccessibilityObjectAtspi::scrollToMakeVisible(Atspi::ScrollType scrollType) const
{
auto* liveObject = dynamicDowncast<AccessibilityObject>(m_coreObject.get());
if (!liveObject)
return;
ScrollAlignment alignX;
ScrollAlignment alignY;
switch (scrollType) {
case Atspi::ScrollType::TopLeft:
alignX = ScrollAlignment::alignLeftAlways;
alignY = ScrollAlignment::alignTopAlways;
break;
case Atspi::ScrollType::BottomRight:
alignX = ScrollAlignment::alignRightAlways;
alignY = ScrollAlignment::alignBottomAlways;
break;
case Atspi::ScrollType::TopEdge:
case Atspi::ScrollType::BottomEdge:
// Align to a particular edge is not supported, it's always the closest edge.
alignX = ScrollAlignment::alignCenterIfNeeded;
alignY = ScrollAlignment::alignToEdgeIfNeeded;
break;
case Atspi::ScrollType::LeftEdge:
case Atspi::ScrollType::RightEdge:
// Align to a particular edge is not supported, it's always the closest edge.
alignX = ScrollAlignment::alignToEdgeIfNeeded;
alignY = ScrollAlignment::alignCenterIfNeeded;
break;
case Atspi::ScrollType::Anywhere:
alignX = ScrollAlignment::alignCenterIfNeeded;
alignY = ScrollAlignment::alignCenterIfNeeded;
break;
}
liveObject->scrollToMakeVisible({ SelectionRevealMode::Reveal, alignX, alignY, ShouldAllowCrossOriginScrolling::Yes });
}
void AccessibilityObjectAtspi::scrollToPoint(const IntPoint& point, Atspi::CoordinateType coordinateType) const
{
if (!m_coreObject)
return;
IntPoint convertedPoint(point);
if (coordinateType == Atspi::CoordinateType::ScreenCoordinates) {
if (auto* frameView = m_coreObject->documentFrameView())
convertedPoint = frameView->contentsToWindow(frameView->screenToContents(point));
}
m_coreObject->scrollToGlobalPoint(WTFMove(convertedPoint));
}
} // namespace WebCore
#endif // USE(ATSPI)
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