instgdifont.cpp

跨平台2D引擎

//instGdiFont.cpp
#ifndef INST_GDIFONT_CPP
#define INST_GDIFONT_CPP


#include "instGdiFont.h"


namespace inst
{


void CGdiFont::GenerateGdiFont()
{
	HFONT old=m_h;
	m_h=::CreateFontIndirectW(&m_lf);
	if(m_hdc.IsInited())::SelectObject(m_hdc.GetValue(),m_h);
	if(old)::DeleteObject((HGDIOBJ)old);
}

CGdiFont::CGdiFont()
{
	ZeroMemory(&m_lf,sizeof(m_lf));
	m_lf.lfHeight		= 15;
	m_lf.lfWeight		= 400;

	GenerateGdiFont();
}

CGdiFont::CGdiFont(const IFont *font)
{
	if( this == font->GetAddr() )return;
	if(!font)return;

	ZeroMemory(&m_lf,sizeof(m_lf));
	memcpy(m_lf.lfFaceName,font->GetName().ReadW(),Min(LF_FACESIZE,font->GetName().GetLen()));
	m_lf.lfHeight		= font->GetHeight();
	m_lf.lfWeight		= font->IsBold()?700:400;
	m_lf.lfItalic		= font->IsItalic()?1:0;
	m_lf.lfUnderline	= font->IsUnderline()?1:0;
	m_lf.lfCharSet		= font->GetCharSet();

	GenerateGdiFont();
}

CGdiFont::CGdiFont(const CStr &n,POS h,Bool b,Bool i,Bool un,UByte cs)
{
	ZeroMemory(&m_lf,sizeof(m_lf));
	memcpy(m_lf.lfFaceName,n.ReadW(),Min(LF_FACESIZE,n.GetLen()));
	m_lf.lfHeight		= h;
	m_lf.lfWeight		= b?700:400;
	m_lf.lfItalic		= i?1:0;
	m_lf.lfUnderline	= un?1:0;
	m_lf.lfCharSet		= cs;

	GenerateGdiFont();
}

CGdiFont::~CGdiFont()
{
	if(m_hdc.IsInited())if(m_hdc.GetValue())::DeleteDC(m_hdc.GetValue());
	if(m_h)::DeleteObject((HGDIOBJ)m_h);
}

POS CGdiFont::GetCharWidth(WChar wch)const
{
	if(False==m_hdc.IsInited())
	{
		const_cast<CGdiFont *>(this)->m_hdc=::CreateCompatibleDC(0);
		::SelectObject(m_hdc.GetValue(),m_h);
	}

	SIZE size={0,0};
	::GetTextExtentPoint32W(m_hdc.GetValue(),&wch,1,&size);

	return size.cx;
}

POS CGdiFont::GetStrWidth(const CStr &str)const
{
	if(False==m_hdc.IsInited())
	{
		const_cast<CGdiFont *>(this)->m_hdc=::CreateCompatibleDC(0);
		::SelectObject(m_hdc.GetValue(),m_h);
	}

	SIZE size={0,0};
	::GetTextExtentPoint32W(m_hdc.GetValue(),str.ReadW(),str.GetLen(),&size);

	return size.cx;
}

LOGFONTA CGdiFont::GetLogFontA()const
{
	LOGFONTA lfa;
	ZeroMemory(&lfa,sizeof(lfa));

	CStr tmp=m_lf.lfFaceName;
	memcpy(lfa.lfFaceName,TmpCharArrayA(tmp),Min(LF_FACESIZE,tmp.GetLen()*2));

	lfa.lfHeight		= m_lf.lfHeight;
	lfa.lfWeight		= m_lf.lfWeight;
	lfa.lfItalic		= m_lf.lfItalic;
	lfa.lfUnderline		= m_lf.lfUnderline;
	lfa.lfCharSet		= m_lf.lfCharSet;

	return lfa;
}


}// end of namespace inst


#endif