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D2D: Tweaked formula that calculates the width/height of text using AccurateText=0 to better match GDI+. Also centers the text inside the adjusted width/height.

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This commit is contained in:
Brian Ferguson 2013-07-28 00:00:22 -06:00
parent 2418c3692f
commit 481442bc19
1 changed files with 34 additions and 6 deletions
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40
Common/Gfx/CanvasD2D.cpp
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@ -309,12 +309,40 @@ void CanvasD2D::DrawTextW(const WCHAR* str, UINT strLen, const TextFormat& forma
if (SUCCEEDED(hr))
{
TextFormatD2D& formatD2D = (TextFormatD2D&)format;
const bool right = formatD2D.GetHorizontalAlignment() == Gfx::HorizontalAlignment::Right;
formatD2D.CreateLayout(str, strLen, rect.Width, rect.Height);
// Center text inside rect
DWRITE_TEXT_METRICS metrics;
formatD2D.m_TextLayout->GetMetrics(&metrics);
float xOffset = (rect.Width - metrics.width) / 2.0f;
float yOffset = (rect.Height - metrics.height) / 2.0f;
switch (formatD2D.GetHorizontalAlignment())
{
case Gfx::HorizontalAlignment::Center:
xOffset = xOffset / 2.0f;
break;
case Gfx::HorizontalAlignment::Right:
xOffset = -xOffset;
break;
}
switch (formatD2D.GetVerticalAlignment())
{
case Gfx::VerticalAlignment::Center:
yOffset = yOffset / 2.0f;
break;
case Gfx::VerticalAlignment::Bottom:
yOffset = -yOffset;
break;
}
m_Target->DrawTextLayout(
D2D1::Point2F(m_AccurateText ? rect.X : right ? rect.X - 3.0f : rect.X + 3.0f, rect.Y - 1.0f),
D2D1::Point2F(m_AccurateText ? rect.X : rect.X + xOffset, rect.Y + yOffset),
formatD2D.m_TextLayout.Get(),
solidBrush.Get());
}
@ -340,8 +368,8 @@ bool CanvasD2D::MeasureTextW(const WCHAR* str, UINT strLen, const TextFormat& fo
float size = 0.0f;
textLayout->GetFontSize(0, &size);
rect.Width = floor(metrics.width + (size / 2.05f) + 0.65f);
rect.Height = floor(metrics.height + 1.5f);
rect.Width = floor(metrics.width + (size / 2.05f) + (metrics.width / 46.0f) - 0.5f);
rect.Height = floor(metrics.height + (size / 10.0f) + 0.3f);
}
else
{
@ -377,8 +405,8 @@ bool CanvasD2D::MeasureTextLinesW(const WCHAR* str, UINT strLen, const TextForma
float size = 0.0f;
textLayout->GetFontSize(0, &size);
rect.Width = floor(metrics.width + (size / 2.05f) + 0.65f);
rect.Height = floor(metrics.height + 1.5f);
rect.Width = floor(metrics.width + (size / 2.05f) + (metrics.width / 46.0f) - 0.5f);
rect.Height = floor(metrics.height + (size / 10.0f) + 0.3f);
}
else
{