Leviathan/Client/Game/game/Localization/MiddleEast/KPangoCairo.cpp

#include "stdafx.h"
#ifdef _COUNTRY_ME_

#include <windef.h>
#include "KPangoCairo.h"
#include <toolkit/XStringUtil.h>
#include "SGameOperationManager.h"


PangoFontMap*		KTextLayout::s_pFontMap = NULL;
PangoContext*		KTextLayout::s_pPangoContext = NULL;
bool				g_bSaveToPng = false;

bool KTextLayout::InitLayoutEngine()
{
	s_pFontMap = pango_cairo_font_map_get_default();
	s_pPangoContext = pango_font_map_create_context( s_pFontMap );

	
	return s_pFontMap && s_pPangoContext;
}


void KTextLayout::DestroyLayoutEngine()
{
	g_object_unref( s_pPangoContext );
	s_pFontMap = NULL;
}


KTextLayout::KTextLayout( int nWidth, int nHeight, int nSpacing, DWORD dwAlign )
	: m_context( NULL ), m_cr( NULL ), m_surface( NULL ), m_layout( NULL ), 
	  m_nWidth( nWidth ), m_nHeight( nHeight ), m_nSpacing( nSpacing ), m_dwAlign( dwAlign )
{
	m_context = (PangoContext*)g_object_ref( s_pPangoContext );
	// m_context = pango_font_map_create_context( pango_cairo_font_map_get_default() );

	cairo_font_options_t* option;
	option = cairo_font_options_create();
	cairo_font_options_set_antialias ( option, CAIRO_ANTIALIAS_GRAY );
	pango_cairo_context_set_font_options( m_context, option );
	cairo_font_options_destroy(option);

	m_layout = pango_layout_new( m_context );

	if ( nWidth >= 0 )
		pango_layout_set_width( m_layout, nWidth * PANGO_SCALE );
	else
		pango_layout_set_width( m_layout, -1 );

	if ( nHeight >= 0 )
		pango_layout_set_height( m_layout, nHeight * PANGO_SCALE );
	else
		pango_layout_set_height( m_layout, nHeight );

	pango_layout_set_justify( m_layout, false);
	pango_layout_set_indent( m_layout, 0 );

	pango_layout_set_spacing( m_layout, nSpacing * PANGO_SCALE );

	pango_layout_set_wrap( m_layout, PANGO_WRAP_WORD_CHAR );

	m_surface = cairo_image_surface_create( CAIRO_FORMAT_ARGB32, m_nWidth, m_nHeight );
	m_cr = cairo_create( m_surface );

	pango_cairo_update_context( m_cr, m_context );
	pango_layout_context_changed( m_layout );
}

 KTextLayout::~KTextLayout()
{
	if ( m_layout )
		g_object_unref( m_layout );
	if ( m_context )
		g_object_unref( m_context );

	if ( m_cr )
		cairo_destroy( m_cr );
	if ( m_surface )
		cairo_surface_destroy( m_surface );
}

void KTextLayout::_Render( LPCSTR szText, double r, double g, double b, double a, double dX, double dY )
{
	cairo_set_source_rgba( m_cr, r, g, b, a );

	cairo_move_to( m_cr, dX, dY);
	pango_layout_set_text( m_layout, szText, -1 );
	pango_cairo_show_layout( m_cr, m_layout );

	if ( g_bSaveToPng )
	{
		static int nFileNo = 0;
		std::string strFileName;

		XStringUtil::Format( strFileName, "PNG-%06d.png", nFileNo++ );
		cairo_surface_write_to_png( m_surface, strFileName.c_str() );
	}
}

void KTextLayout::Render( KTextParagraph* pParagraph )
{
	
	Layout( pParagraph );


	PangoAttrList* pAttrList;

	pAttrList = pParagraph->GetPangoAttrListWithoutColor();
	pango_layout_set_attributes( m_layout, pAttrList );
	pango_attr_list_unref( pAttrList );

	if ( pParagraph->GetAttr()->bShadow )
	{
		double dOffset = (pParagraph->GetAttr()->nFontSize / 10. );
		_Render( pParagraph->GetString().c_str(), 0, 0, 0, 0.8, dOffset, dOffset );
	}

	pAttrList = pParagraph->GetPangoAttrList();
	pango_layout_set_attributes( m_layout, pAttrList );
	pango_attr_list_unref( pAttrList );

	_Render( pParagraph->GetString().c_str(),
		((pParagraph->GetAttr()->dwColor & 0xff0000) >> 16) / 255.0,
		((pParagraph->GetAttr()->dwColor & 0x00ff00) >>  8) / 255.0,
		((pParagraph->GetAttr()->dwColor & 0x0000ff) >>  0) / 255.0,
		1.0 );
}


KSize KTextLayout::GetLayoutSize( KTextParagraph* pParagraph )
{
	if ( pParagraph->m_bEmoticon )
		return KSize( 0, 0 );

	Layout( pParagraph );

	PangoAttrList* pAttrList = pParagraph->GetPangoAttrListWithoutColor();
	pango_layout_set_attributes( m_layout, pAttrList );
	pango_attr_list_unref( pAttrList );

	
	pango_layout_set_text( m_layout, pParagraph->GetString().c_str(), -1 );	

	int nWidth, nHeight;
	pango_layout_get_pixel_size( m_layout, &nWidth, &nHeight );

	return KSize( nWidth, nHeight );
}


void KTextLayout::SplitLine( std::vector< std::string > & vecLineList, const std::string& _strOriginal, const char* szFontName, int nFontSize, bool bBold )
{
	PangoFontDescription *desc;

	std::string strOriginal = multibyte_to_utf8( _strOriginal );

	std::string strFont;

	XStringUtil::Format( strFont, "%s %d", szFontName, nFontSize );
	
	desc = pango_font_description_from_string( strFont.c_str() );
	if ( bBold )
		pango_font_description_set_weight( desc, PANGO_WEIGHT_BOLD );
	pango_layout_set_font_description( m_layout, desc );
	pango_font_description_free( desc );

	pango_layout_set_text( m_layout, strOriginal.c_str(), -1 );	
	int nLines = pango_layout_get_line_count( m_layout );

	PangoLayoutLine* pLine;
	std::string strLine;

	for ( int i = 0; i < nLines; ++i )
	{
		pLine = pango_layout_get_line_readonly( m_layout, i );

		strLine = strOriginal.substr( pLine->start_index, pLine->length );
		vecLineList.push_back( utf8_to_multibyte( strLine ) );
	}
}

void KTextLayout::Layout( KTextParagraph* pParagraph )
{
	PangoFontDescription *desc;
	std::string strFont;

	XStringUtil::Format( strFont, "%s %d", pParagraph->GetAttr()->strFontName.c_str(), pParagraph->GetAttr()->nFontSize );
	
	desc = pango_font_description_from_string( strFont.c_str() );
	if ( pParagraph->GetAttr()->bBold )
		pango_font_description_set_weight( desc, PANGO_WEIGHT_BOLD );
	pango_layout_set_font_description( m_layout, desc );
	pango_font_description_free( desc );

	if ( (m_dwAlign & KTextParagraph::KTALIGN_HCENTER) == KTextParagraph::KTALIGN_HCENTER )
		pango_layout_set_alignment( m_layout, PANGO_ALIGN_CENTER );
	else if ( (m_dwAlign & KTextParagraph::KTALIGN_LEFT) == KTextParagraph::KTALIGN_LEFT )
		pango_layout_set_alignment( m_layout, PANGO_ALIGN_LEFT );
	else if ( (m_dwAlign & KTextParagraph::KTALIGN_RIGHT) == KTextParagraph::KTALIGN_RIGHT )
		pango_layout_set_alignment( m_layout, PANGO_ALIGN_RIGHT );
}


#endif