boolean gdiplus_textlayout(textpara_t *para, char **fontpath)
{
/* ensure GDI+ is started up: since we get called outside of a job, we can't rely on GDI+ startup then */
UseGdiplus();
Layout* layout = new Layout(para->fontname, para->fontsize, para->str);
/* measure the text */
/* NOTE: use TextRenderingHintAntiAlias + GetGenericTypographic to get a layout without extra space at beginning and end */
RectF boundingBox;
DeviceContext deviceContext;
Graphics measureGraphics(deviceContext.hdc);
measureGraphics.SetTextRenderingHint(TextRenderingHintAntiAlias);
measureGraphics.MeasureString(
&layout->text[0],
layout->text.size(),
layout->font,
PointF(0.0f, 0.0f),
GetGenericTypographic(),
&boundingBox);
FontFamily fontFamily;
layout->font->GetFamily(&fontFamily);
int style = layout->font->GetStyle();
para->layout = (void*)layout;
para->free_layout = &gdiplus_free_layout;
para->width = boundingBox.Width;
para->height = layout->font->GetHeight(&measureGraphics);
para->yoffset_layout = fontFamily.GetCellAscent(style) * para->fontsize / fontFamily.GetEmHeight(style); /* convert design units to pixels */
para->yoffset_centerline = 0;
return TRUE;
};
// --------------------------------------------------------------
GFontWin32GDIPlus::GFontWin32GDIPlus( Font* nativeFont, const char * faceName,
int size, int properties)
: mNativeFont(nativeFont), mName(faceName),
mSize(size), mFontProp(properties)
{
DWORD count = (DWORD)mbstowcs(NULL, faceName, strlen(faceName));
WCHAR * wstr = (WCHAR*) malloc ((count + 1) * sizeof(WCHAR));
mbstowcs(wstr, faceName, strlen(faceName));
FontCollection fc;
FontFamily ff (wstr, &fc);
int style;
switch (properties) {
case kFontBold:
style = FontStyleBold;
break;
case kFontItalic:
style = FontStyleItalic;
break;
case kFontBold+kFontItalic:
style = FontStyleBoldItalic;
break;
case kFontUnderline:
style = FontStyleUnderline;
break;
default:
style = FontStyleRegular;
}
mEmHeight = ff.GetEmHeight(style);
float ratio = mEmHeight ? (float)mEmHeight / size : 1.f;
mAscent = ff.GetCellAscent(style) / ratio;
mDescent = ff.GetCellDescent(style) / ratio;
free (wstr);
}
void CButtonCx::DrawString(CDC *drawDC, LPDRAWITEMSTRUCT lpDrawItemStruct)
{
// テキストを得る。
CString title;
GetWindowText(title);
// テキストが空の場合および GDI+ Font/Brush が設定されていない場合何もしない。
if (title.IsEmpty() || m_GpFont == NULL || m_GpBrush == NULL)
{
return;
}
// 透過モードにする。
drawDC->SetBkMode(TRANSPARENT);
// テキストの描画位置
CRect rect = (CRect) (lpDrawItemStruct->rcItem); // クライアント四角形の取得
// マージン設定
rect.top += m_Margin.top;
rect.left += m_Margin.left;
rect.bottom -= m_Margin.bottom;
rect.right -= m_Margin.right;
CArray<CString, CString> arr;
arr.RemoveAll();
CString resToken;
int curPos = 0;
resToken = title.Tokenize(L"\r\n", curPos);
while (resToken != L"")
{
arr.Add(resToken);
resToken = title.Tokenize(L"\r\n", curPos);
}
if (m_FontType == FT_GDI_PLUS || m_FontType == FT_AUTO) // GDI+
{
Gdiplus::Graphics g(drawDC->m_hDC);
const Gdiplus::PointF pointF(0.0, 0.0);
Gdiplus::RectF extentF;
for (int i = 0; i < arr.GetCount(); i++)
{
CRect r;
r.top = (LONG) (((double) rect.Height()) / arr.GetCount() * i);
r.bottom = (LONG) (((double) rect.Height()) / arr.GetCount() * (i + 1));
r.left = rect.left;
r.right = rect.right;
g.MeasureString(arr.GetAt(i), arr.GetAt(i).GetLength() + 1, m_GpFont, pointF, &extentF); // "+ 1" for workdaround
REAL y;
FontFamily ff;
m_GpFont->GetFamily(&ff);
REAL ascent = (REAL) ff.GetCellAscent(FontStyleRegular);
REAL lineSpacing = (REAL) ff.GetLineSpacing(FontStyleRegular);
y = r.CenterPoint().y - (extentF.Height * ascent / lineSpacing) / 2;
Gdiplus::PointF pt(rect.CenterPoint().x - (extentF.Width / 2), y);
Gdiplus::RectF rectF(pt.X, pt.Y, (REAL) extentF.Width, (REAL) extentF.Height);
g.SetTextRenderingHint(TextRenderingHintAntiAlias);
g.DrawString(arr.GetAt(i), -1, m_GpFont, rectF, m_GpStringformat, m_GpBrush);
}
}
else // GDI
{
for (int i = 0; i < arr.GetCount(); i++)
{
CRect r;
r.top = rect.top + (LONG) (((double) rect.Height()) / arr.GetCount() * i);
r.bottom = rect.top + (LONG) (((double) rect.Height()) / arr.GetCount() * (i + 1));
r.left = rect.left;
r.right = rect.right;
CRect rectI;
CSize extent;
HGDIOBJ oldFont = drawDC->SelectObject(m_Font);
GetTextExtentPoint32(drawDC->m_hDC, arr.GetAt(i), arr.GetAt(i).GetLength() + 1, &extent);
rectI.top = r.top + (r.Height() - extent.cy) / 2;
rectI.bottom = rectI.top + extent.cy;
rectI.left = r.left;
rectI.right = r.right;
DrawText(drawDC->m_hDC, arr.GetAt(i), arr.GetAt(i).GetLength(), r, DT_CENTER | DT_VCENTER | DT_SINGLELINE);
drawDC->SelectObject(oldFont);
}
}
// いつか DirectWrite 描画に対応したいものである。。。
}