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 // EXTERNAL INCLUDES
  22 #include <iostream>
  23
  24 #define DBUS_INTERFACE_PROPERTIES "org.freedesktop.DBus.Properties"
  25
  26 using namespace Dali::Accessibility;
  27
  28 BridgeComponent::BridgeComponent()
  29 {
  30 }
  31
  32 void BridgeComponent::RegisterInterfaces()
  33 {
  34   // The second arguments below are the names (or signatures) of DBus methods.
  35   // Screen Reader will call the methods with the exact names as specified in the AT-SPI Component interface:
  36   // https://gitlab.gnome.org/GNOME/at-spi2-core/-/blob/master/xml/Component.xml
  37
  38   DBus::DBusInterfaceDescription desc{AtspiDbusInterfaceComponent};
  39   AddFunctionToInterface(desc, "Contains", &BridgeComponent::IsAccessibleContainingPoint);
  40   AddFunctionToInterface(desc, "GetAccessibleAtPoint", &BridgeComponent::GetAccessibleAtPoint);
  41   AddFunctionToInterface(desc, "GetExtents", &BridgeComponent::GetExtents);
  42   AddFunctionToInterface(desc, "GetPosition", &BridgeComponent::GetPosition);
  43   AddFunctionToInterface(desc, "GetSize", &BridgeComponent::GetSize);
  44   AddFunctionToInterface(desc, "GetLayer", &BridgeComponent::GetLayer);
  45   AddFunctionToInterface(desc, "GetAlpha", &BridgeComponent::GetAlpha);
  46   AddFunctionToInterface(desc, "GetMDIZOrder", &BridgeComponent::GetMdiZOrder);
  47   AddFunctionToInterface(desc, "GrabHighlight", &BridgeComponent::GrabHighlight);
  48   AddFunctionToInterface(desc, "GrabFocus", &BridgeComponent::GrabFocus);
  49   AddFunctionToInterface(desc, "ClearHighlight", &BridgeComponent::ClearHighlight);
  50   mDbusServer.addInterface("/", desc, true);
  51 }
  52
  53 Component* BridgeComponent::FindSelf() const
  54 {
  55   auto self = BridgeBase::FindSelf();
  56   assert(self);
  57   auto componentInterface = dynamic_cast<Component*>(self);
  58   if(!componentInterface)
  59   {
  60     throw std::domain_error{"object " + self->GetAddress().ToString() + " doesn't have Component interface"};
  61   }
  62   return componentInterface;
  63 }
  64
  65 DBus::ValueOrError<bool> BridgeComponent::IsAccessibleContainingPoint(int32_t x, int32_t y, uint32_t coordType)
  66 {
  67   return FindSelf()->IsAccessibleContainingPoint({x, y}, static_cast<CoordinateType>(coordType));
  68 }
  69
  70 DBus::ValueOrError<Accessible*> BridgeComponent::GetAccessibleAtPoint(int32_t x, int32_t y, uint32_t coordType)
  71 {
  72   return FindSelf()->GetAccessibleAtPoint({x, y}, static_cast<CoordinateType>(coordType));
  73 }
  74
  75 DBus::ValueOrError<std::tuple<int32_t, int32_t, int32_t, int32_t> > BridgeComponent::GetExtents(uint32_t coordType)
  76 {
  77   auto rect = FindSelf()->GetExtents(static_cast<CoordinateType>(coordType));
  78   return std::tuple<int32_t, int32_t, int32_t, int32_t>{rect.x, rect.y, rect.width, rect.height};
  79 }
  80
  81 DBus::ValueOrError<int32_t, int32_t> BridgeComponent::GetPosition(uint32_t coordType)
  82 {
  83   auto rect = FindSelf()->GetExtents(static_cast<CoordinateType>(coordType));
  84   return {static_cast<int32_t>(rect.x), static_cast<int32_t>(rect.y)};
  85 }
  86
  87 DBus::ValueOrError<int32_t, int32_t> BridgeComponent::GetSize(uint32_t coordType)
  88 {
  89   auto rect = FindSelf()->GetExtents(static_cast<CoordinateType>(coordType));
  90   return {static_cast<int32_t>(rect.width), static_cast<int32_t>(rect.height)};
  91 }
  92
  93 DBus::ValueOrError<ComponentLayer> BridgeComponent::GetLayer()
  94 {
  95   return FindSelf()->GetLayer();
  96 }
  97
  98 DBus::ValueOrError<double> BridgeComponent::GetAlpha()
  99 {
 100   return FindSelf()->GetAlpha();
 101 }
 102
 103 DBus::ValueOrError<bool> BridgeComponent::GrabFocus()
 104 {
 105   return FindSelf()->GrabFocus();
 106 }
 107
 108 DBus::ValueOrError<bool> BridgeComponent::GrabHighlight()
 109 {
 110   return FindSelf()->GrabHighlight();
 111 }
 112
 113 DBus::ValueOrError<bool> BridgeComponent::ClearHighlight()
 114 {
 115   return FindSelf()->ClearHighlight();
 116 }
 117
 118 DBus::ValueOrError<int16_t> BridgeComponent::GetMdiZOrder()
 119 {
 120   return FindSelf()->GetMdiZOrder();
 121 }