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Copy pathTextAnalysis.cpp
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188 lines (166 loc) · 3.65 KB
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// Copyright (c) Microsoft Corporation.
// Licensed under the MIT License.
#include "pch.h"
// IDWriteTextAnalysisSource Implementation
HRESULT STDMETHODCALLTYPE TextAnalysis::QueryInterface(
REFIID riid,
_COM_Outptr_ void** obj
)
{
if (riid == __uuidof(IDWriteTextAnalysisSource) || riid == __uuidof(IUnknown))
{
AddRef();
*obj = this;
return S_OK;
}
else
{
*obj = nullptr;
return E_NOINTERFACE;
}
}
ULONG STDMETHODCALLTYPE TextAnalysis::AddRef(void)
{
return InterlockedIncrement(&refCount_);
}
ULONG STDMETHODCALLTYPE TextAnalysis::Release(void)
{
uint32_t newCount = InterlockedDecrement(&refCount_);
if (newCount == 0)
delete this;
return newCount;
}
HRESULT STDMETHODCALLTYPE TextAnalysis::GetTextAtPosition(
UINT32 textPosition,
_Outptr_result_buffer_(*textLength) WCHAR const** textString,
_Out_ UINT32* textLength
)
{
uint32_t const length = static_cast<uint32_t>(text_.length());
if (textPosition <= length)
{
*textString = text_.data() + textPosition;
*textLength = length - textPosition;
return S_OK;
}
else
{
*textString = nullptr;
*textLength = 0;
return E_INVALIDARG;
}
}
HRESULT STDMETHODCALLTYPE TextAnalysis::GetTextBeforePosition(
UINT32 textPosition,
_Outptr_result_buffer_(*textLength) WCHAR const** textString,
_Out_ UINT32* textLength
)
{
uint32_t const length = static_cast<uint32_t>(text_.length());
if (textPosition <= length)
{
*textString = text_.data();
*textLength = textPosition;
return S_OK;
}
else
{
*textString = nullptr;
*textLength = 0;
return E_INVALIDARG;
}
}
DWRITE_READING_DIRECTION STDMETHODCALLTYPE TextAnalysis::GetParagraphReadingDirection()
{
return DWRITE_READING_DIRECTION_LEFT_TO_RIGHT;
}
HRESULT STDMETHODCALLTYPE TextAnalysis::GetLocaleName(
UINT32 textPosition,
_Out_ UINT32* textLength,
_Outptr_result_z_ WCHAR const** localeName
)
{
*localeName = localeName_.c_str();
return S_OK;
}
HRESULT STDMETHODCALLTYPE TextAnalysis::GetNumberSubstitution(
UINT32 textPosition,
_Out_ UINT32* textLength,
_COM_Outptr_ IDWriteNumberSubstitution** numberSubstitution
)
{
return factory_->CreateNumberSubstitution(
DWRITE_NUMBER_SUBSTITUTION_METHOD_NONE,
localeName_.c_str(),
TRUE,
numberSubstitution
);
}
// IDWriteTextAnalysisSink Implementation
HRESULT STDMETHODCALLTYPE TextAnalysisSink::QueryInterface(
REFIID riid,
_COM_Outptr_ void** obj
)
{
if (riid == __uuidof(IDWriteTextAnalysisSource) || riid == __uuidof(IUnknown))
{
AddRef();
*obj = this;
return S_OK;
}
else
{
*obj = nullptr;
return E_NOINTERFACE;
}
}
ULONG STDMETHODCALLTYPE TextAnalysisSink::AddRef(void)
{
return InterlockedIncrement(&refCount_);
}
ULONG STDMETHODCALLTYPE TextAnalysisSink::Release(void)
{
uint32_t newCount = InterlockedDecrement(&refCount_);
if (newCount == 0)
delete this;
return newCount;
}
HRESULT STDMETHODCALLTYPE TextAnalysisSink::SetScriptAnalysis(
UINT32 textPosition,
UINT32 textLength,
_In_ DWRITE_SCRIPT_ANALYSIS const* scriptAnalysis
)
{
scriptAnalysis_ = *scriptAnalysis;
scriptAnalysisSet_ = true;
return S_OK;
}
HRESULT STDMETHODCALLTYPE TextAnalysisSink::SetLineBreakpoints(
UINT32 textPosition,
UINT32 textLength,
_In_reads_(textLength) DWRITE_LINE_BREAKPOINT const* lineBreakpoints
)
{
return S_OK;
}
HRESULT STDMETHODCALLTYPE TextAnalysisSink::SetBidiLevel(
UINT32 textPosition,
UINT32 textLength,
UINT8 explicitLevel,
UINT8 resolvedLevel
)
{
return S_OK;
}
HRESULT STDMETHODCALLTYPE TextAnalysisSink::SetNumberSubstitution(
UINT32 textPosition,
UINT32 textLength,
_In_ IDWriteNumberSubstitution* numberSubstitution
)
{
return S_OK;
}
const DWRITE_SCRIPT_ANALYSIS* TextAnalysisSink::GetScriptAnalysis()
{
return &scriptAnalysis_;
}