154 lines
2.9 KiB
C++
154 lines
2.9 KiB
C++
#include "..\enodes.h"
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#include "..\Win\winbase.h"
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e2d::EText::EText()
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: m_bWordWrapping(false)
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, m_pFont(nullptr)
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, m_fWordWrappingWidth(0)
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{
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this->setFont(new EFont());
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}
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e2d::EText::EText(const EString & text)
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: EText()
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{
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this->setText(text);
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this->setFont(new EFont());
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}
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e2d::EText::EText(EFont * font)
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: EText()
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{
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this->setFont(font);
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}
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e2d::EText::EText(const EString & text, EFont * font)
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: EText()
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{
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this->setText(text);
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this->setFont(font);
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}
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e2d::EText::EText(const EString & text, EString fontFamily, float fontSize, UINT32 color, UINT32 fontWeight, bool italic)
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{
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this->setText(text);
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this->setFont(new EFont(fontFamily, fontSize, color, fontWeight, italic));
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}
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e2d::EText::~EText()
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{
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SafeRelease(&m_pFont);
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}
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e2d::EString e2d::EText::getText() const
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{
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return m_sText;
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}
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float e2d::EText::getWidth() const
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{
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return m_fWordWrappingWidth * m_fScaleX;
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}
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float e2d::EText::getRealWidth() const
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{
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return m_fWordWrappingWidth;
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}
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e2d::EFont * e2d::EText::getFont() const
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{
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return m_pFont;
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}
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void e2d::EText::setText(const EString & text)
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{
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m_sText = text;
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_initTextLayout();
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}
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void e2d::EText::setFont(EFont * font)
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{
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if (font)
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{
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SafeRelease(&m_pFont);
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m_pFont = font;
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font->retain();
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_initTextLayout();
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}
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}
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void e2d::EText::setWordWrapping(bool value)
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{
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m_bWordWrapping = value;
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_initTextLayout();
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}
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void e2d::EText::setWordWrappingWidth(float wordWrapWidth)
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{
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m_fWordWrappingWidth = max(wordWrapWidth, 0);
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_initTextLayout();
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}
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void e2d::EText::_onRender()
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{
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GetSolidColorBrush()->SetColor(D2D1::ColorF(m_pFont->m_Color, m_fDisplayOpacity));
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GetRenderTarget()->DrawTextW(
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m_sText.c_str(),
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UINT32(m_sText.length()),
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m_pFont->_getTextFormat(),
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D2D1::RectF(
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0,
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0,
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m_bWordWrapping ? m_fWordWrappingWidth : m_Size.width,
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getRealHeight()
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),
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GetSolidColorBrush()
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);
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}
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void e2d::EText::_initTextLayout()
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{
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// 未设置字体或空字符串时，文本宽高为 0
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if (!m_pFont || m_sText.empty())
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{
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this->_setHeight(0);
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m_fWordWrappingWidth = 0;
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return;
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}
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// 未打开文本自动换行时，设置 TextFormat 属性为不换行
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if (!m_bWordWrapping)
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{
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m_pFont->_getTextFormat()->SetWordWrapping(DWRITE_WORD_WRAPPING_NO_WRAP);
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}
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else
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{
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m_pFont->_getTextFormat()->SetWordWrapping(DWRITE_WORD_WRAPPING_WRAP);
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}
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// 获取 TextLayout
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IDWriteTextLayout * pDWriteTextLayout = nullptr;
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HRESULT hr = GetDirectWriteFactory()->CreateTextLayout(
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m_sText.c_str(),
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UINT32(m_sText.size()),
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m_pFont->_getTextFormat(),
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m_bWordWrapping ? m_fWordWrappingWidth : 0,
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0,
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&pDWriteTextLayout
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);
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ASSERT(SUCCEEDED(hr), "Create IDWriteTextFormat Failed!");
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// 获取文本布局的宽度和高度
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DWRITE_TEXT_METRICS metrics;
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pDWriteTextLayout->GetMetrics(&metrics);
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this->_setSize(metrics.widthIncludingTrailingWhitespace, metrics.height);
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m_fWordWrappingWidth = metrics.widthIncludingTrailingWhitespace;
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// 删除相关资源
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SafeReleaseInterface(&pDWriteTextLayout);
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}
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