dali/internal/accessibility/bridge/bridge-component.cpp

   1 /*
   2  * Copyright (c) 2021 Samsung Electronics Co., Ltd.
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at
   7  *
   8  * http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  *
  16  */
  17
  18 // CLASS HEADER
  19 #include <dali/internal/accessibility/bridge/bridge-component.h>
  20
  21 #define DBUS_INTERFACE_PROPERTIES "org.freedesktop.DBus.Properties"
  22
  23 using namespace Dali::Accessibility;
  24
  25 BridgeComponent::BridgeComponent()
  26 {
  27 }
  28
  29 void BridgeComponent::RegisterInterfaces()
  30 {
  31   // The second arguments below are the names (or signatures) of DBus methods.
  32   // Screen Reader will call the methods with the exact names as specified in the AT-SPI Component interface:
  33   // https://gitlab.gnome.org/GNOME/at-spi2-core/-/blob/master/xml/Component.xml
  34
  35   DBus::DBusInterfaceDescription desc{Accessible::GetInterfaceName(AtspiInterface::COMPONENT)};
  36   AddFunctionToInterface(desc, "Contains", &BridgeComponent::IsAccessibleContainingPoint);
  37   AddFunctionToInterface(desc, "GetAccessibleAtPoint", &BridgeComponent::GetAccessibleAtPoint);
  38   AddFunctionToInterface(desc, "GetExtents", &BridgeComponent::GetExtents);
  39   AddFunctionToInterface(desc, "GetPosition", &BridgeComponent::GetPosition);
  40   AddFunctionToInterface(desc, "GetSize", &BridgeComponent::GetSize);
  41   AddFunctionToInterface(desc, "GetLayer", &BridgeComponent::GetLayer);
  42   AddFunctionToInterface(desc, "GetAlpha", &BridgeComponent::GetAlpha);
  43   AddFunctionToInterface(desc, "GetMDIZOrder", &BridgeComponent::GetMdiZOrder);
  44   AddFunctionToInterface(desc, "GrabHighlight", &BridgeComponent::GrabHighlight);
  45   AddFunctionToInterface(desc, "GrabFocus", &BridgeComponent::GrabFocus);
  46   AddFunctionToInterface(desc, "ClearHighlight", &BridgeComponent::ClearHighlight);
  47   mDbusServer.addInterface("/", desc, true);
  48 }
  49
  50 Component* BridgeComponent::FindSelf() const
  51 {
  52   return FindCurrentObjectWithInterface<Dali::Accessibility::AtspiInterface::COMPONENT>();
  53 }
  54
  55 DBus::ValueOrError<bool> BridgeComponent::IsAccessibleContainingPoint(int32_t x, int32_t y, uint32_t coordType)
  56 {
  57   return FindSelf()->IsAccessibleContainingPoint({x, y}, static_cast<CoordinateType>(coordType));
  58 }
  59
  60 DBus::ValueOrError<Accessible*> BridgeComponent::GetAccessibleAtPoint(int32_t x, int32_t y, uint32_t coordType)
  61 {
  62   return FindSelf()->GetAccessibleAtPoint({x, y}, static_cast<CoordinateType>(coordType));
  63 }
  64
  65 DBus::ValueOrError<std::tuple<int32_t, int32_t, int32_t, int32_t> > BridgeComponent::GetExtents(uint32_t coordType)
  66 {
  67   auto rect = FindSelf()->GetExtents(static_cast<CoordinateType>(coordType));
  68
  69   rect.x += mData->mExtentsOffset.first;
  70   rect.y += mData->mExtentsOffset.second;
  71
  72   return std::tuple<int32_t, int32_t, int32_t, int32_t>{rect.x, rect.y, rect.width, rect.height};
  73 }
  74
  75 DBus::ValueOrError<int32_t, int32_t> BridgeComponent::GetPosition(uint32_t coordType)
  76 {
  77   auto rect = FindSelf()->GetExtents(static_cast<CoordinateType>(coordType));
  78
  79   rect.x += mData->mExtentsOffset.first;
  80   rect.y += mData->mExtentsOffset.second;
  81
  82   return {static_cast<int32_t>(rect.x), static_cast<int32_t>(rect.y)};
  83 }
  84
  85 DBus::ValueOrError<int32_t, int32_t> BridgeComponent::GetSize(uint32_t coordType)
  86 {
  87   auto rect = FindSelf()->GetExtents(static_cast<CoordinateType>(coordType));
  88   return {static_cast<int32_t>(rect.width), static_cast<int32_t>(rect.height)};
  89 }
  90
  91 DBus::ValueOrError<ComponentLayer> BridgeComponent::GetLayer()
  92 {
  93   return FindSelf()->GetLayer();
  94 }
  95
  96 DBus::ValueOrError<double> BridgeComponent::GetAlpha()
  97 {
  98   return FindSelf()->GetAlpha();
  99 }
 100
 101 DBus::ValueOrError<bool> BridgeComponent::GrabFocus()
 102 {
 103   return FindSelf()->GrabFocus();
 104 }
 105
 106 DBus::ValueOrError<bool> BridgeComponent::GrabHighlight()
 107 {
 108   return FindSelf()->GrabHighlight();
 109 }
 110
 111 DBus::ValueOrError<bool> BridgeComponent::ClearHighlight()
 112 {
 113   return FindSelf()->ClearHighlight();
 114 }
 115
 116 DBus::ValueOrError<int16_t> BridgeComponent::GetMdiZOrder()
 117 {
 118   return FindSelf()->GetMdiZOrder();
 119 }