mirror of
https://github.com/chibicitiberiu/rainmeter-studio.git
synced 2024-02-24 04:33:31 +00:00
Fixed line endings and applied gitignore
This commit is contained in:
@ -1,367 +1,367 @@
|
||||
/*
|
||||
Copyright (C) 2013 Birunthan Mohanathas
|
||||
|
||||
This program is free software; you can redistribute it and/or
|
||||
modify it under the terms of the GNU General Public License
|
||||
as published by the Free Software Foundation; either version 2
|
||||
of the License, or (at your option) any later version.
|
||||
|
||||
This program is distributed in the hope that it will be useful,
|
||||
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
GNU General Public License for more details.
|
||||
|
||||
You should have received a copy of the GNU General Public License
|
||||
along with this program; if not, write to the Free Software
|
||||
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
|
||||
*/
|
||||
|
||||
#include "StdAfx.h"
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#include "TextFormatD2D.h"
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#include "CanvasD2D.h"
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#include "Util/DWriteHelpers.h"
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namespace Gfx {
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TextFormatD2D::TextFormatD2D() :
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m_ExtraHeight(),
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m_LineGap(),
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m_Trimming()
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||||
{
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}
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||||
|
||||
TextFormatD2D::~TextFormatD2D()
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||||
{
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||||
}
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||||
|
||||
void TextFormatD2D::Dispose()
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{
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m_TextFormat.Reset();
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m_TextLayout.Reset();
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m_InlineEllipsis.Reset();
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m_ExtraHeight = 0.0f;
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m_LineGap = 0.0f;
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}
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|
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bool TextFormatD2D::CreateLayout(
|
||||
const WCHAR* str, UINT strLen, float maxW, float maxH, bool gdiEmulation)
|
||||
{
|
||||
bool strChanged = false;
|
||||
if (strLen != m_LastString.length() ||
|
||||
memcmp(str, m_LastString.c_str(), (strLen + 1) * sizeof(WCHAR)) != 0)
|
||||
{
|
||||
strChanged = true;
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||||
m_LastString.assign(str, strLen);
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||||
}
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||||
|
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// The width and height of a DirectWrite layout must be non-negative.
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maxW = max(0.0f, maxW);
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maxH = max(0.0f, maxH);
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||||
|
||||
if (m_Trimming)
|
||||
{
|
||||
// GDI+ compatibility: If we trimming (i.e. clipping), GDI+ draws text lines even if they
|
||||
// would be clipped. This is arguably a bad 'feature', but some in some cases the height
|
||||
// might be just a pixel or two too small. In order to render those cases correctly (but
|
||||
// still clipped as CanvasD2D::DrawTextW() will clip), we'll increase the max height of
|
||||
// the layout.
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||||
maxH += 2.0f;
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||||
}
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||||
|
||||
if (m_TextLayout && !strChanged)
|
||||
{
|
||||
if (maxW != m_TextLayout->GetMaxWidth())
|
||||
{
|
||||
m_TextLayout->SetMaxWidth(maxW);
|
||||
}
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||||
|
||||
if (maxH != m_TextLayout->GetMaxHeight())
|
||||
{
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m_TextLayout->SetMaxHeight(maxH);
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||||
}
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||||
}
|
||||
else
|
||||
{
|
||||
CanvasD2D::c_DWFactory->CreateTextLayout(
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str, strLen, m_TextFormat.Get(), maxW, maxH, m_TextLayout.ReleaseAndGetAddressOf());
|
||||
if (!m_TextLayout) return false;
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||||
|
||||
if (gdiEmulation)
|
||||
{
|
||||
Microsoft::WRL::ComPtr<IDWriteTextLayout1> textLayout1;
|
||||
m_TextLayout.As(&textLayout1);
|
||||
|
||||
const float xOffset = m_TextFormat->GetFontSize() / 6.0f;
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const float emOffset = xOffset / 24.0f;
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const DWRITE_TEXT_RANGE range = {0, strLen};
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textLayout1->SetCharacterSpacing(emOffset, emOffset, 0.0f, range);
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||||
}
|
||||
|
||||
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 &&
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||||
lineMetrics[0].isTrimmed &&
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||||
lineMetrics[1].isTrimmed &&
|
||||
lineMetrics[1].height == 0.0f)
|
||||
{
|
||||
m_TextLayout->SetWordWrapping(DWRITE_WORD_WRAPPING_NO_WRAP);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
void TextFormatD2D::SetProperties(
|
||||
const WCHAR* fontFamily, int size, bool bold, bool italic,
|
||||
const FontCollection* fontCollection)
|
||||
{
|
||||
auto fontCollectionD2D = (FontCollectionD2D*)fontCollection;
|
||||
|
||||
Dispose();
|
||||
|
||||
WCHAR dwriteFamilyName[LF_FACESIZE];
|
||||
DWRITE_FONT_WEIGHT dwriteFontWeight =
|
||||
bold ? DWRITE_FONT_WEIGHT_BOLD : DWRITE_FONT_WEIGHT_REGULAR;
|
||||
DWRITE_FONT_STYLE dwriteFontStyle =
|
||||
italic ? DWRITE_FONT_STYLE_ITALIC : DWRITE_FONT_STYLE_NORMAL;
|
||||
DWRITE_FONT_STRETCH dwriteFontStretch = DWRITE_FONT_STRETCH_NORMAL;
|
||||
const float dwriteFontSize = size * (4.0f / 3.0f);
|
||||
|
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// |fontFamily| uses the GDI/GDI+ font naming convention so try to create DirectWrite font
|
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// using the GDI family name and then create a text format using the DirectWrite family name
|
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// obtained from it.
|
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HRESULT hr = Util::GetDWritePropertiesFromGDIProperties(
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||||
CanvasD2D::c_DWFactory.Get(), fontFamily, bold, italic, dwriteFontWeight, dwriteFontStyle,
|
||||
dwriteFontStretch, dwriteFamilyName, _countof(dwriteFamilyName));
|
||||
if (SUCCEEDED(hr))
|
||||
{
|
||||
hr = CanvasD2D::c_DWFactory->CreateTextFormat(
|
||||
dwriteFamilyName,
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nullptr,
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||||
dwriteFontWeight,
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dwriteFontStyle,
|
||||
dwriteFontStretch,
|
||||
dwriteFontSize,
|
||||
L"",
|
||||
&m_TextFormat);
|
||||
}
|
||||
|
||||
if (FAILED(hr))
|
||||
{
|
||||
IDWriteFontCollection* dwriteFontCollection = nullptr;
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||||
|
||||
// If |fontFamily| is not in the system collection, use the font collection from
|
||||
// |fontCollectionD2D| if possible.
|
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if (!Util::IsFamilyInSystemFontCollection(CanvasD2D::c_DWFactory.Get(), fontFamily) &&
|
||||
(fontCollectionD2D && fontCollectionD2D->InitializeCollection()))
|
||||
{
|
||||
IDWriteFont* dwriteFont = Util::FindDWriteFontInFontCollectionByGDIFamilyName(
|
||||
fontCollectionD2D->m_Collection, fontFamily);
|
||||
if (dwriteFont)
|
||||
{
|
||||
hr = Util::GetFamilyNameFromDWriteFont(
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||||
dwriteFont, dwriteFamilyName, _countof(dwriteFamilyName));
|
||||
if (SUCCEEDED(hr))
|
||||
{
|
||||
fontFamily = dwriteFamilyName;
|
||||
Util::GetPropertiesFromDWriteFont(
|
||||
dwriteFont, bold, italic, &dwriteFontWeight, &dwriteFontStyle,
|
||||
&dwriteFontStretch);
|
||||
}
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||||
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dwriteFont->Release();
|
||||
}
|
||||
|
||||
dwriteFontCollection = fontCollectionD2D->m_Collection;
|
||||
}
|
||||
|
||||
// Fallback in case above fails.
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||||
hr = CanvasD2D::c_DWFactory->CreateTextFormat(
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||||
fontFamily,
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||||
dwriteFontCollection,
|
||||
dwriteFontWeight,
|
||||
dwriteFontStyle,
|
||||
dwriteFontStretch,
|
||||
dwriteFontSize,
|
||||
L"",
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||||
&m_TextFormat);
|
||||
}
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||||
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||||
if (SUCCEEDED(hr))
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||||
{
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||||
SetHorizontalAlignment(GetHorizontalAlignment());
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||||
SetVerticalAlignment(GetVerticalAlignment());
|
||||
|
||||
// Get the family name to in case CreateTextFormat() fallbacked on some other family name.
|
||||
hr = m_TextFormat->GetFontFamilyName(dwriteFamilyName, _countof(dwriteFamilyName));
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if (FAILED(hr)) return;
|
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|
||||
Microsoft::WRL::ComPtr<IDWriteFontCollection> collection;
|
||||
Microsoft::WRL::ComPtr<IDWriteFontFamily> fontFamily;
|
||||
UINT32 familyNameIndex;
|
||||
BOOL exists;
|
||||
if (FAILED(m_TextFormat->GetFontCollection(collection.GetAddressOf())) ||
|
||||
FAILED(collection->FindFamilyName(dwriteFamilyName, &familyNameIndex, &exists)) ||
|
||||
FAILED(collection->GetFontFamily(familyNameIndex, fontFamily.GetAddressOf())))
|
||||
{
|
||||
return;
|
||||
}
|
||||
|
||||
Microsoft::WRL::ComPtr<IDWriteFont> font;
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||||
hr = fontFamily->GetFirstMatchingFont(
|
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m_TextFormat->GetFontWeight(),
|
||||
m_TextFormat->GetFontStretch(),
|
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m_TextFormat->GetFontStyle(),
|
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font.GetAddressOf());
|
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if (FAILED(hr)) return;
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|
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DWRITE_FONT_METRICS fmetrics;
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font->GetMetrics(&fmetrics);
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|
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// GDI+ compatibility: GDI+ adds extra padding below the string when |m_AccurateText| is
|
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// |false|. The bottom padding seems to be based on the font metrics so we can calculate it
|
||||
// once and keep using it regardless of the actual string. In some cases, GDI+ also adds
|
||||
// the line gap to the overall height so we will store it as well.
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||||
const float pixelsPerDesignUnit = dwriteFontSize / (float)fmetrics.designUnitsPerEm;
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m_ExtraHeight =
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(((float)fmetrics.designUnitsPerEm / 8.0f) - fmetrics.lineGap) * pixelsPerDesignUnit;
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||||
m_LineGap = fmetrics.lineGap * pixelsPerDesignUnit;
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||||
}
|
||||
else
|
||||
{
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||||
Dispose();
|
||||
}
|
||||
}
|
||||
|
||||
DWRITE_TEXT_METRICS TextFormatD2D::GetMetrics(
|
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const WCHAR* str, UINT strLen, bool gdiEmulation, float maxWidth)
|
||||
{
|
||||
// GDI+ compatibility: If the last character is a newline, GDI+ measurements seem to ignore it.
|
||||
bool strippedLastNewLine = false;
|
||||
if (strLen > 2 && str[strLen - 1] == L'\n')
|
||||
{
|
||||
strippedLastNewLine = true;
|
||||
--strLen;
|
||||
|
||||
if (str[strLen - 1] == L'\r')
|
||||
{
|
||||
--strLen;
|
||||
}
|
||||
}
|
||||
|
||||
DWRITE_TEXT_METRICS metrics = {0};
|
||||
Microsoft::WRL::ComPtr<IDWriteTextLayout> textLayout;
|
||||
HRESULT hr = CanvasD2D::c_DWFactory->CreateTextLayout(
|
||||
str,
|
||||
strLen,
|
||||
m_TextFormat.Get(),
|
||||
maxWidth,
|
||||
10000,
|
||||
textLayout.GetAddressOf());
|
||||
if (SUCCEEDED(hr))
|
||||
{
|
||||
const float xOffset = m_TextFormat->GetFontSize() / 6.0f;
|
||||
if (gdiEmulation)
|
||||
{
|
||||
Microsoft::WRL::ComPtr<IDWriteTextLayout1> textLayout1;
|
||||
textLayout.As(&textLayout1);
|
||||
|
||||
const float emOffset = xOffset / 24.0f;
|
||||
const DWRITE_TEXT_RANGE range = {0, strLen};
|
||||
textLayout1->SetCharacterSpacing(emOffset, emOffset, 0.0f, range);
|
||||
}
|
||||
|
||||
textLayout->GetMetrics(&metrics);
|
||||
if (metrics.width > 0.0f)
|
||||
{
|
||||
if (gdiEmulation)
|
||||
{
|
||||
metrics.width += xOffset * 2;
|
||||
metrics.height += m_ExtraHeight;
|
||||
|
||||
// GDI+ compatibility: If the string contains a newline (even if it is the
|
||||
// stripped last character), GDI+ adds the line gap to the overall height.
|
||||
if (strippedLastNewLine || wmemchr(str, L'\n', strLen) != nullptr)
|
||||
{
|
||||
metrics.height += m_LineGap;
|
||||
}
|
||||
}
|
||||
else
|
||||
{
|
||||
// GDI+ compatibility: With accurate metrics, the line gap needs to be subtracted
|
||||
// from the overall height if the string does not contain newlines.
|
||||
if (!strippedLastNewLine && wmemchr(str, L'\n', strLen) == nullptr)
|
||||
{
|
||||
metrics.height -= m_LineGap;
|
||||
}
|
||||
}
|
||||
}
|
||||
else
|
||||
{
|
||||
// GDI+ compatibility: Get rid of the height that DirectWrite assigns to zero-width
|
||||
// strings.
|
||||
metrics.height = 0.0f;
|
||||
}
|
||||
}
|
||||
|
||||
return metrics;
|
||||
}
|
||||
|
||||
void TextFormatD2D::SetTrimming(bool trim)
|
||||
{
|
||||
m_Trimming = trim;
|
||||
IDWriteInlineObject* inlineObject = nullptr;
|
||||
DWRITE_TRIMMING trimming = {};
|
||||
DWRITE_WORD_WRAPPING wordWrapping = DWRITE_WORD_WRAPPING_NO_WRAP;
|
||||
if (trim)
|
||||
{
|
||||
if (!m_InlineEllipsis)
|
||||
{
|
||||
CanvasD2D::c_DWFactory->CreateEllipsisTrimmingSign(
|
||||
m_TextFormat.Get(), m_InlineEllipsis.GetAddressOf());
|
||||
}
|
||||
|
||||
inlineObject = m_InlineEllipsis.Get();
|
||||
trimming.granularity = DWRITE_TRIMMING_GRANULARITY_CHARACTER;
|
||||
wordWrapping = DWRITE_WORD_WRAPPING_WRAP;
|
||||
}
|
||||
|
||||
m_TextFormat->SetTrimming(&trimming, inlineObject);
|
||||
m_TextFormat->SetWordWrapping(wordWrapping);
|
||||
}
|
||||
|
||||
void TextFormatD2D::SetHorizontalAlignment(HorizontalAlignment alignment)
|
||||
{
|
||||
__super::SetHorizontalAlignment(alignment);
|
||||
|
||||
if (m_TextFormat)
|
||||
{
|
||||
m_TextFormat->SetTextAlignment(
|
||||
(alignment == HorizontalAlignment::Left) ? DWRITE_TEXT_ALIGNMENT_LEADING :
|
||||
(alignment == HorizontalAlignment::Center) ? DWRITE_TEXT_ALIGNMENT_CENTER :
|
||||
DWRITE_TEXT_ALIGNMENT_TRAILING);
|
||||
}
|
||||
}
|
||||
|
||||
void TextFormatD2D::SetVerticalAlignment(VerticalAlignment alignment)
|
||||
{
|
||||
__super::SetVerticalAlignment(alignment);
|
||||
|
||||
if (m_TextFormat)
|
||||
{
|
||||
m_TextFormat->SetParagraphAlignment(
|
||||
(alignment == VerticalAlignment::Top) ? DWRITE_PARAGRAPH_ALIGNMENT_NEAR :
|
||||
(alignment == VerticalAlignment::Center) ? DWRITE_PARAGRAPH_ALIGNMENT_CENTER :
|
||||
DWRITE_PARAGRAPH_ALIGNMENT_FAR);
|
||||
}
|
||||
}
|
||||
|
||||
} // namespace Gfx
|
||||
/*
|
||||
Copyright (C) 2013 Birunthan Mohanathas
|
||||
|
||||
This program is free software; you can redistribute it and/or
|
||||
modify it under the terms of the GNU General Public License
|
||||
as published by the Free Software Foundation; either version 2
|
||||
of the License, or (at your option) any later version.
|
||||
|
||||
This program is distributed in the hope that it will be useful,
|
||||
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
GNU General Public License for more details.
|
||||
|
||||
You should have received a copy of the GNU General Public License
|
||||
along with this program; if not, write to the Free Software
|
||||
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
|
||||
*/
|
||||
|
||||
#include "StdAfx.h"
|
||||
#include "TextFormatD2D.h"
|
||||
#include "CanvasD2D.h"
|
||||
#include "Util/DWriteHelpers.h"
|
||||
|
||||
namespace Gfx {
|
||||
|
||||
TextFormatD2D::TextFormatD2D() :
|
||||
m_ExtraHeight(),
|
||||
m_LineGap(),
|
||||
m_Trimming()
|
||||
{
|
||||
}
|
||||
|
||||
TextFormatD2D::~TextFormatD2D()
|
||||
{
|
||||
}
|
||||
|
||||
void TextFormatD2D::Dispose()
|
||||
{
|
||||
m_TextFormat.Reset();
|
||||
m_TextLayout.Reset();
|
||||
m_InlineEllipsis.Reset();
|
||||
|
||||
m_ExtraHeight = 0.0f;
|
||||
m_LineGap = 0.0f;
|
||||
}
|
||||
|
||||
bool TextFormatD2D::CreateLayout(
|
||||
const WCHAR* str, UINT strLen, float maxW, float maxH, bool gdiEmulation)
|
||||
{
|
||||
bool strChanged = false;
|
||||
if (strLen != m_LastString.length() ||
|
||||
memcmp(str, m_LastString.c_str(), (strLen + 1) * sizeof(WCHAR)) != 0)
|
||||
{
|
||||
strChanged = true;
|
||||
m_LastString.assign(str, strLen);
|
||||
}
|
||||
|
||||
// The width and height of a DirectWrite layout must be non-negative.
|
||||
maxW = max(0.0f, maxW);
|
||||
maxH = max(0.0f, maxH);
|
||||
|
||||
if (m_Trimming)
|
||||
{
|
||||
// GDI+ compatibility: If we trimming (i.e. clipping), GDI+ draws text lines even if they
|
||||
// would be clipped. This is arguably a bad 'feature', but some in some cases the height
|
||||
// might be just a pixel or two too small. In order to render those cases correctly (but
|
||||
// still clipped as CanvasD2D::DrawTextW() will clip), we'll increase the max height of
|
||||
// the layout.
|
||||
maxH += 2.0f;
|
||||
}
|
||||
|
||||
if (m_TextLayout && !strChanged)
|
||||
{
|
||||
if (maxW != m_TextLayout->GetMaxWidth())
|
||||
{
|
||||
m_TextLayout->SetMaxWidth(maxW);
|
||||
}
|
||||
|
||||
if (maxH != m_TextLayout->GetMaxHeight())
|
||||
{
|
||||
m_TextLayout->SetMaxHeight(maxH);
|
||||
}
|
||||
}
|
||||
else
|
||||
{
|
||||
CanvasD2D::c_DWFactory->CreateTextLayout(
|
||||
str, strLen, m_TextFormat.Get(), maxW, maxH, m_TextLayout.ReleaseAndGetAddressOf());
|
||||
if (!m_TextLayout) return false;
|
||||
|
||||
if (gdiEmulation)
|
||||
{
|
||||
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);
|
||||
}
|
||||
|
||||
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)
|
||||
{
|
||||
m_TextLayout->SetWordWrapping(DWRITE_WORD_WRAPPING_NO_WRAP);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
void TextFormatD2D::SetProperties(
|
||||
const WCHAR* fontFamily, int size, bool bold, bool italic,
|
||||
const FontCollection* fontCollection)
|
||||
{
|
||||
auto fontCollectionD2D = (FontCollectionD2D*)fontCollection;
|
||||
|
||||
Dispose();
|
||||
|
||||
WCHAR dwriteFamilyName[LF_FACESIZE];
|
||||
DWRITE_FONT_WEIGHT dwriteFontWeight =
|
||||
bold ? DWRITE_FONT_WEIGHT_BOLD : DWRITE_FONT_WEIGHT_REGULAR;
|
||||
DWRITE_FONT_STYLE dwriteFontStyle =
|
||||
italic ? DWRITE_FONT_STYLE_ITALIC : DWRITE_FONT_STYLE_NORMAL;
|
||||
DWRITE_FONT_STRETCH dwriteFontStretch = DWRITE_FONT_STRETCH_NORMAL;
|
||||
const float dwriteFontSize = size * (4.0f / 3.0f);
|
||||
|
||||
// |fontFamily| uses the GDI/GDI+ font naming convention so try to create DirectWrite font
|
||||
// using the GDI family name and then create a text format using the DirectWrite family name
|
||||
// obtained from it.
|
||||
HRESULT hr = Util::GetDWritePropertiesFromGDIProperties(
|
||||
CanvasD2D::c_DWFactory.Get(), fontFamily, bold, italic, dwriteFontWeight, dwriteFontStyle,
|
||||
dwriteFontStretch, dwriteFamilyName, _countof(dwriteFamilyName));
|
||||
if (SUCCEEDED(hr))
|
||||
{
|
||||
hr = CanvasD2D::c_DWFactory->CreateTextFormat(
|
||||
dwriteFamilyName,
|
||||
nullptr,
|
||||
dwriteFontWeight,
|
||||
dwriteFontStyle,
|
||||
dwriteFontStretch,
|
||||
dwriteFontSize,
|
||||
L"",
|
||||
&m_TextFormat);
|
||||
}
|
||||
|
||||
if (FAILED(hr))
|
||||
{
|
||||
IDWriteFontCollection* dwriteFontCollection = nullptr;
|
||||
|
||||
// If |fontFamily| is not in the system collection, use the font collection from
|
||||
// |fontCollectionD2D| if possible.
|
||||
if (!Util::IsFamilyInSystemFontCollection(CanvasD2D::c_DWFactory.Get(), fontFamily) &&
|
||||
(fontCollectionD2D && fontCollectionD2D->InitializeCollection()))
|
||||
{
|
||||
IDWriteFont* dwriteFont = Util::FindDWriteFontInFontCollectionByGDIFamilyName(
|
||||
fontCollectionD2D->m_Collection, fontFamily);
|
||||
if (dwriteFont)
|
||||
{
|
||||
hr = Util::GetFamilyNameFromDWriteFont(
|
||||
dwriteFont, dwriteFamilyName, _countof(dwriteFamilyName));
|
||||
if (SUCCEEDED(hr))
|
||||
{
|
||||
fontFamily = dwriteFamilyName;
|
||||
Util::GetPropertiesFromDWriteFont(
|
||||
dwriteFont, bold, italic, &dwriteFontWeight, &dwriteFontStyle,
|
||||
&dwriteFontStretch);
|
||||
}
|
||||
|
||||
dwriteFont->Release();
|
||||
}
|
||||
|
||||
dwriteFontCollection = fontCollectionD2D->m_Collection;
|
||||
}
|
||||
|
||||
// Fallback in case above fails.
|
||||
hr = CanvasD2D::c_DWFactory->CreateTextFormat(
|
||||
fontFamily,
|
||||
dwriteFontCollection,
|
||||
dwriteFontWeight,
|
||||
dwriteFontStyle,
|
||||
dwriteFontStretch,
|
||||
dwriteFontSize,
|
||||
L"",
|
||||
&m_TextFormat);
|
||||
}
|
||||
|
||||
if (SUCCEEDED(hr))
|
||||
{
|
||||
SetHorizontalAlignment(GetHorizontalAlignment());
|
||||
SetVerticalAlignment(GetVerticalAlignment());
|
||||
|
||||
// Get the family name to in case CreateTextFormat() fallbacked on some other family name.
|
||||
hr = m_TextFormat->GetFontFamilyName(dwriteFamilyName, _countof(dwriteFamilyName));
|
||||
if (FAILED(hr)) return;
|
||||
|
||||
Microsoft::WRL::ComPtr<IDWriteFontCollection> collection;
|
||||
Microsoft::WRL::ComPtr<IDWriteFontFamily> fontFamily;
|
||||
UINT32 familyNameIndex;
|
||||
BOOL exists;
|
||||
if (FAILED(m_TextFormat->GetFontCollection(collection.GetAddressOf())) ||
|
||||
FAILED(collection->FindFamilyName(dwriteFamilyName, &familyNameIndex, &exists)) ||
|
||||
FAILED(collection->GetFontFamily(familyNameIndex, fontFamily.GetAddressOf())))
|
||||
{
|
||||
return;
|
||||
}
|
||||
|
||||
Microsoft::WRL::ComPtr<IDWriteFont> font;
|
||||
hr = fontFamily->GetFirstMatchingFont(
|
||||
m_TextFormat->GetFontWeight(),
|
||||
m_TextFormat->GetFontStretch(),
|
||||
m_TextFormat->GetFontStyle(),
|
||||
font.GetAddressOf());
|
||||
if (FAILED(hr)) return;
|
||||
|
||||
DWRITE_FONT_METRICS fmetrics;
|
||||
font->GetMetrics(&fmetrics);
|
||||
|
||||
// GDI+ compatibility: GDI+ adds extra padding below the string when |m_AccurateText| is
|
||||
// |false|. The bottom padding seems to be based on the font metrics so we can calculate it
|
||||
// once and keep using it regardless of the actual string. In some cases, GDI+ also adds
|
||||
// the line gap to the overall height so we will store it as well.
|
||||
const float pixelsPerDesignUnit = dwriteFontSize / (float)fmetrics.designUnitsPerEm;
|
||||
m_ExtraHeight =
|
||||
(((float)fmetrics.designUnitsPerEm / 8.0f) - fmetrics.lineGap) * pixelsPerDesignUnit;
|
||||
m_LineGap = fmetrics.lineGap * pixelsPerDesignUnit;
|
||||
}
|
||||
else
|
||||
{
|
||||
Dispose();
|
||||
}
|
||||
}
|
||||
|
||||
DWRITE_TEXT_METRICS TextFormatD2D::GetMetrics(
|
||||
const WCHAR* str, UINT strLen, bool gdiEmulation, float maxWidth)
|
||||
{
|
||||
// GDI+ compatibility: If the last character is a newline, GDI+ measurements seem to ignore it.
|
||||
bool strippedLastNewLine = false;
|
||||
if (strLen > 2 && str[strLen - 1] == L'\n')
|
||||
{
|
||||
strippedLastNewLine = true;
|
||||
--strLen;
|
||||
|
||||
if (str[strLen - 1] == L'\r')
|
||||
{
|
||||
--strLen;
|
||||
}
|
||||
}
|
||||
|
||||
DWRITE_TEXT_METRICS metrics = {0};
|
||||
Microsoft::WRL::ComPtr<IDWriteTextLayout> textLayout;
|
||||
HRESULT hr = CanvasD2D::c_DWFactory->CreateTextLayout(
|
||||
str,
|
||||
strLen,
|
||||
m_TextFormat.Get(),
|
||||
maxWidth,
|
||||
10000,
|
||||
textLayout.GetAddressOf());
|
||||
if (SUCCEEDED(hr))
|
||||
{
|
||||
const float xOffset = m_TextFormat->GetFontSize() / 6.0f;
|
||||
if (gdiEmulation)
|
||||
{
|
||||
Microsoft::WRL::ComPtr<IDWriteTextLayout1> textLayout1;
|
||||
textLayout.As(&textLayout1);
|
||||
|
||||
const float emOffset = xOffset / 24.0f;
|
||||
const DWRITE_TEXT_RANGE range = {0, strLen};
|
||||
textLayout1->SetCharacterSpacing(emOffset, emOffset, 0.0f, range);
|
||||
}
|
||||
|
||||
textLayout->GetMetrics(&metrics);
|
||||
if (metrics.width > 0.0f)
|
||||
{
|
||||
if (gdiEmulation)
|
||||
{
|
||||
metrics.width += xOffset * 2;
|
||||
metrics.height += m_ExtraHeight;
|
||||
|
||||
// GDI+ compatibility: If the string contains a newline (even if it is the
|
||||
// stripped last character), GDI+ adds the line gap to the overall height.
|
||||
if (strippedLastNewLine || wmemchr(str, L'\n', strLen) != nullptr)
|
||||
{
|
||||
metrics.height += m_LineGap;
|
||||
}
|
||||
}
|
||||
else
|
||||
{
|
||||
// GDI+ compatibility: With accurate metrics, the line gap needs to be subtracted
|
||||
// from the overall height if the string does not contain newlines.
|
||||
if (!strippedLastNewLine && wmemchr(str, L'\n', strLen) == nullptr)
|
||||
{
|
||||
metrics.height -= m_LineGap;
|
||||
}
|
||||
}
|
||||
}
|
||||
else
|
||||
{
|
||||
// GDI+ compatibility: Get rid of the height that DirectWrite assigns to zero-width
|
||||
// strings.
|
||||
metrics.height = 0.0f;
|
||||
}
|
||||
}
|
||||
|
||||
return metrics;
|
||||
}
|
||||
|
||||
void TextFormatD2D::SetTrimming(bool trim)
|
||||
{
|
||||
m_Trimming = trim;
|
||||
IDWriteInlineObject* inlineObject = nullptr;
|
||||
DWRITE_TRIMMING trimming = {};
|
||||
DWRITE_WORD_WRAPPING wordWrapping = DWRITE_WORD_WRAPPING_NO_WRAP;
|
||||
if (trim)
|
||||
{
|
||||
if (!m_InlineEllipsis)
|
||||
{
|
||||
CanvasD2D::c_DWFactory->CreateEllipsisTrimmingSign(
|
||||
m_TextFormat.Get(), m_InlineEllipsis.GetAddressOf());
|
||||
}
|
||||
|
||||
inlineObject = m_InlineEllipsis.Get();
|
||||
trimming.granularity = DWRITE_TRIMMING_GRANULARITY_CHARACTER;
|
||||
wordWrapping = DWRITE_WORD_WRAPPING_WRAP;
|
||||
}
|
||||
|
||||
m_TextFormat->SetTrimming(&trimming, inlineObject);
|
||||
m_TextFormat->SetWordWrapping(wordWrapping);
|
||||
}
|
||||
|
||||
void TextFormatD2D::SetHorizontalAlignment(HorizontalAlignment alignment)
|
||||
{
|
||||
__super::SetHorizontalAlignment(alignment);
|
||||
|
||||
if (m_TextFormat)
|
||||
{
|
||||
m_TextFormat->SetTextAlignment(
|
||||
(alignment == HorizontalAlignment::Left) ? DWRITE_TEXT_ALIGNMENT_LEADING :
|
||||
(alignment == HorizontalAlignment::Center) ? DWRITE_TEXT_ALIGNMENT_CENTER :
|
||||
DWRITE_TEXT_ALIGNMENT_TRAILING);
|
||||
}
|
||||
}
|
||||
|
||||
void TextFormatD2D::SetVerticalAlignment(VerticalAlignment alignment)
|
||||
{
|
||||
__super::SetVerticalAlignment(alignment);
|
||||
|
||||
if (m_TextFormat)
|
||||
{
|
||||
m_TextFormat->SetParagraphAlignment(
|
||||
(alignment == VerticalAlignment::Top) ? DWRITE_PARAGRAPH_ALIGNMENT_NEAR :
|
||||
(alignment == VerticalAlignment::Center) ? DWRITE_PARAGRAPH_ALIGNMENT_CENTER :
|
||||
DWRITE_PARAGRAPH_ALIGNMENT_FAR);
|
||||
}
|
||||
}
|
||||
|
||||
} // namespace Gfx
|
||||
|
||||
Reference in New Issue
Block a user