| /* |
| * 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 ENABLE(ACCESSIBILITY) && USE(ATSPI) |
| #include "AccessibilityAtspi.h" |
| #include "AccessibilityAtspiEnums.h" |
| #include "AccessibilityObjectInterface.h" |
| #include "Document.h" |
| #include "FrameView.h" |
| #include "RenderLayer.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 }, 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 }, 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(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(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)", 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(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 }, 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, uint32_t 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; |
| } |
| } |
| |
| m_coreObject->updateChildrenIfNecessary(); |
| if (auto* coreObject = m_coreObject->accessibilityHitTest(convertedPoint)) |
| return coreObject->wrapper(); |
| |
| return nullptr; |
| } |
| |
| IntRect AccessibilityObjectAtspi::elementRect(uint32_t 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(uint32_t scrollType) const |
| { |
| if (!m_coreObject) |
| 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; |
| } |
| |
| m_coreObject->scrollToMakeVisible({ SelectionRevealMode::Reveal, alignX, alignY, ShouldAllowCrossOriginScrolling::Yes }); |
| } |
| |
| void AccessibilityObjectAtspi::scrollToPoint(const IntPoint& point, uint32_t 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(convertedPoint); |
| } |
| |
| } // namespace WebCore |
| |
| #endif // ENABLE(ACCESSIBILITY) && USE(ATSPI) |
