dali/internal/accessibility/bridge/bridge-text.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-text.h>
  20
  21 // INTERNAL INCLUDES
  22 #include <dali/internal/input/common/input-method-context-factory.h>
  23
  24 using namespace Dali::Accessibility;
  25
  26 void BridgeText::RegisterInterfaces()
  27 {
  28   // The second arguments below are the names (or signatures) of DBus methods.
  29   // Screen Reader will call the methods with the exact names as specified in the AT-SPI Text interface:
  30   // https://gitlab.gnome.org/GNOME/at-spi2-core/-/blob/master/xml/Text.xml
  31
  32   DBus::DBusInterfaceDescription desc{Accessible::GetInterfaceName(AtspiInterface::TEXT)};
  33   AddFunctionToInterface(desc, "GetText", &BridgeText::GetText);
  34   AddGetPropertyToInterface(desc, "CharacterCount", &BridgeText::GetCharacterCount);
  35   AddGetPropertyToInterface(desc, "CaretOffset", &BridgeText::GetCursorOffset);
  36   AddFunctionToInterface(desc, "SetCaretOffset", &BridgeText::SetCursorOffset);
  37   AddFunctionToInterface(desc, "GetTextAtOffset", &BridgeText::GetTextAtOffset);
  38   AddFunctionToInterface(desc, "GetSelection", &BridgeText::GetRangeOfSelection);
  39   AddFunctionToInterface(desc, "SetSelection", &BridgeText::SetRangeOfSelection);
  40   AddFunctionToInterface(desc, "RemoveSelection", &BridgeText::RemoveSelection);
  41   AddFunctionToInterface(desc, "GetRangeExtents", &BridgeText::GetRangeExtents);
  42   mDbusServer.addInterface("/", desc, true);
  43 }
  44
  45 Text* BridgeText::FindSelf() const
  46 {
  47   return FindCurrentObjectWithInterface<Dali::Accessibility::AtspiInterface::TEXT>();
  48 }
  49
  50 DBus::ValueOrError<std::string> BridgeText::GetText(int startOffset, int endOffset)
  51 {
  52   return FindSelf()->GetText(startOffset, endOffset);
  53 }
  54
  55 DBus::ValueOrError<int32_t> BridgeText::GetCharacterCount()
  56 {
  57   return FindSelf()->GetCharacterCount();
  58 }
  59
  60 DBus::ValueOrError<int32_t> BridgeText::GetCursorOffset()
  61 {
  62   return FindSelf()->GetCursorOffset();
  63 }
  64
  65 DBus::ValueOrError<bool> BridgeText::SetCursorOffset(int32_t offset)
  66 {
  67   return FindSelf()->SetCursorOffset(offset);
  68 }
  69
  70 DBus::ValueOrError<std::string, int, int> BridgeText::GetTextAtOffset(int32_t offset, uint32_t boundary)
  71 {
  72   auto range = FindSelf()->GetTextAtOffset(offset, static_cast<TextBoundary>(boundary));
  73   return {range.content, static_cast<int>(range.startOffset), static_cast<int>(range.endOffset)};
  74 }
  75
  76 DBus::ValueOrError<int, int> BridgeText::GetRangeOfSelection(int32_t selectionIndex)
  77 {
  78   auto range = FindSelf()->GetRangeOfSelection(selectionIndex);
  79   return {static_cast<int>(range.startOffset), static_cast<int>(range.endOffset)};
  80 }
  81
  82 DBus::ValueOrError<bool> BridgeText::RemoveSelection(int32_t selectionIndex)
  83 {
  84   return FindSelf()->RemoveSelection(selectionIndex);
  85 }
  86
  87 DBus::ValueOrError<bool> BridgeText::SetRangeOfSelection(int32_t selectionIndex, int32_t startOffset, int32_t endOffset)
  88 {
  89   return FindSelf()->SetRangeOfSelection(selectionIndex, startOffset, endOffset);
  90 }
  91
  92 DBus::ValueOrError<int32_t, int32_t, int32_t, int32_t> BridgeText::GetRangeExtents(int32_t startOffset, int32_t endOffset, uint32_t coordType)
  93 {
  94   auto rect = FindSelf()->GetRangeExtents(startOffset, endOffset, static_cast<CoordinateType>(coordType));
  95   return {static_cast<int32_t>(rect.x), static_cast<int32_t>(rect.y), static_cast<int32_t>(rect.width), static_cast<int32_t>(rect.height)};
  96 }