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Gfx: Handle failed creation of D2D text layout

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This commit is contained in:
Birunthan Mohanathas
2013-10-15 17:08:40 +03:00
parent 6d243711a6
commit ca41a4575c
3 changed files with 81 additions and 82 deletions
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50
Common/Gfx/TextFormatD2D.cpp
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@ -43,7 +43,7 @@ void TextFormatD2D::Dispose()
m_LineGap = 0.0f;
}
void TextFormatD2D::CreateLayout(
bool TextFormatD2D::CreateLayout(
const WCHAR* str, UINT strLen, float maxW, float maxH, bool gdiEmulation)
{
bool strChanged = false;
@ -84,38 +84,38 @@ void TextFormatD2D::CreateLayout(
{
CanvasD2D::c_DWFactory->CreateTextLayout(
str, strLen, m_TextFormat.Get(), maxW, maxH, m_TextLayout.ReleaseAndGetAddressOf());
if (!m_TextLayout) return false;
if (m_TextLayout)
if (gdiEmulation)
{
if (gdiEmulation)
{
Microsoft::WRL::ComPtr<IDWriteTextLayout1> textLayout1;
m_TextLayout.As(&textLayout1);
Microsoft::WRL::ComPtr<IDWriteTextLayout1> textLayout1;
m_TextLayout.As(&textLayout1);
const float xOffset = m_TextFormat->GetFontSize() / 6.0f;
const float emOffset = xOffset / 24.0f;
const DWRITE_TEXT_RANGE range = {0, strLen};
textLayout1->SetCharacterSpacing(emOffset, emOffset, 0.0f, range);
}
const float xOffset = m_TextFormat->GetFontSize() / 6.0f;
const float emOffset = xOffset / 24.0f;
const DWRITE_TEXT_RANGE range = {0, strLen};
textLayout1->SetCharacterSpacing(emOffset, emOffset, 0.0f, range);
}
UINT32 lineCount = 0;
DWRITE_LINE_METRICS lineMetrics[2];
HRESULT hr = m_TextLayout->GetLineMetrics(lineMetrics, _countof(lineMetrics), &lineCount);
if (SUCCEEDED(hr))
UINT32 lineCount = 0;
DWRITE_LINE_METRICS lineMetrics[2];
HRESULT hr = m_TextLayout->GetLineMetrics(lineMetrics, _countof(lineMetrics), &lineCount);
if (SUCCEEDED(hr))
{
// If only one line is visible, disable wrapping so that as much text as possible is shown
// after trimming.
// TODO: Fix this for when more than one line is visible.
if (lineCount >= 2 &&
lineMetrics[0].isTrimmed &&
lineMetrics[1].isTrimmed &&
lineMetrics[1].height == 0.0f)
{
// If only one line is visible, disable wrapping so that as much text as possible is shown
// after trimming.
// TODO: Fix this for when more than one line is visible.
if (lineCount >= 2 &&
lineMetrics[0].isTrimmed &&
lineMetrics[1].isTrimmed &&
lineMetrics[1].height == 0.0f)
{
m_TextLayout->SetWordWrapping(DWRITE_WORD_WRAPPING_NO_WRAP);
}
m_TextLayout->SetWordWrapping(DWRITE_WORD_WRAPPING_NO_WRAP);
}
}
}
return true;
}
void TextFormatD2D::SetProperties(