/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
 * This file is part of the LibreOffice project.
 *
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/.
 *
 * This file incorporates work covered by the following license notice:
 *
 *   Licensed to the Apache Software Foundation (ASF) under one or more
 *   contributor license agreements. See the NOTICE file distributed
 *   with this work for additional information regarding copyright
 *   ownership. The ASF licenses this file to you under the Apache
 *   License, Version 2.0 (the "License"); you may not use this file
 *   except in compliance with the License. You may obtain a copy of
 *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
 */

#include "coretext/common.h"

#ifdef MACOSX

#include "aqua/salframe.h"
#include "coretext/salgdi.h"

#else

#include <premac.h>
#include <UIKit/UIKit.h>
#include <postmac.h>

#include <basebmp/scanlineformats.hxx>

#include "saldatabasic.hxx"
#include "headless/svpframe.hxx"
#include "headless/svpgdi.hxx"

#endif

#include "coretext/salcoretextstyle.hxx"

#ifdef MACOSX

QuartzSalGraphics::QuartzSalGraphics()
    : mpFrame( NULL )
    , mxLayer( NULL )
    , mrContext( NULL )
    , mpXorEmulation( NULL )
    , mnXorMode( 0 )
    , mnWidth( 0 )
    , mnHeight( 0 )
    , mnBitmapDepth( 0 )
    , mnRealDPIX( 0 )
    , mnRealDPIY( 0 )
    , mfFakeDPIScale( 1.0 )
    , mxClipPath( NULL )
    , maLineColor( COL_WHITE )
    , maFillColor( COL_BLACK )
    , mbNonAntialiasedText( false )
    , mbPrinter( false )
    , mbVirDev( false )
    , mbWindow( false )
{
    SAL_INFO( "vcl.coretext.gr", "QuartzSalGraphics::QuartzSalGraphics() " << this );

    m_style = new CoreTextStyleInfo();
}

QuartzSalGraphics::~QuartzSalGraphics()
{
    SAL_INFO( "vcl.coretext.gr", "~QuartzSalGraphics(" << this << ")" );

    if(m_style)
    {
        delete m_style;
        m_style = NULL;
    }
}

#endif

inline bool QuartzSalGraphics::AddTempDevFont( ImplDevFontList*,
                                             const OUString& ,
                                             const OUString& )
{
    OSL_ASSERT( FALSE );
    return false;
}

void QuartzSalGraphics::DrawServerFontLayout( const ServerFontLayout& )
{
}

void QuartzSalGraphics::FreeEmbedFontData( const void* pData, long /*nDataLen*/ )
{
    // TODO: implementing this only makes sense when the implementation of
    //      QuartzSalGraphics::GetEmbedFontData() returns non-NULL
    (void)pData;
    DBG_ASSERT( (pData!=NULL), "QuartzSalGraphics::FreeEmbedFontData() is not implemented\n");
}

void QuartzSalGraphics::GetDevFontList( ImplDevFontList* pFontList )
{
    DBG_ASSERT( pFontList, "QuartzSalGraphics::GetDevFontList(NULL) !");

    SalData* pSalData = GetSalData();
    if (pSalData->mpFontList == NULL)
    {
        pSalData->mpFontList = new SystemFontList();
    }
    // Copy all PhysicalFontFace objects contained in the SystemFontList
    pSalData->mpFontList->AnnounceFonts( *pFontList );
}

void QuartzSalGraphics::ClearDevFontCache()
{
    SalData* pSalData = GetSalData();
    delete pSalData->mpFontList;
    pSalData->mpFontList = NULL;
}

void QuartzSalGraphics::GetDevFontSubstList( OutputDevice* )
{
    // nothing to do since there are no device-specific fonts on Aqua
}

const void* QuartzSalGraphics::GetEmbedFontData( const PhysicalFontFace*,
                              const sal_Ucs* /*pUnicodes*/,
                              sal_Int32* /*pWidths*/,
                              FontSubsetInfo&,
                              long* /*pDataLen*/ )
{
    return NULL;
}

const Ucs2SIntMap* QuartzSalGraphics::GetFontEncodingVector(const PhysicalFontFace*,
                                                          const Ucs2OStrMap** /*ppNonEncoded*/ )
{
    return NULL;
}

void QuartzSalGraphics::GetFontMetric( ImplFontMetricData* pMetric, int nFallbackLevel )
{
    (void)nFallbackLevel; // glyph-fallback on CoreText is done differently -> no fallback level

    pMetric->mbScalableFont = true;
    pMetric->mbKernableFont = true;
    CTFontRef font = m_style->GetFont();
    DBG_ASSERT(font, "GetFontMetric without font set in style");

    pMetric->mnAscent = static_cast<long>( CTFontGetAscent(font) * mfFakeDPIScale + 0.5);
    pMetric->mnDescent = static_cast<long>(CTFontGetDescent(font) * mfFakeDPIScale + 0.5);
    const long nExtDescent  = static_cast<long>((CTFontGetLeading(font) + CTFontGetDescent(font)) *
                                                mfFakeDPIScale + 0.5);
    pMetric->mnExtLeading   = nExtDescent + pMetric->mnDescent;
    pMetric->mnIntLeading   = 0;
    pMetric->mnWidth = m_style->GetFontStretchedSize();

    SAL_INFO( "vcl.coretext.gr",
              "GetFontMetric(" << this << ") returning: {ascent=" << pMetric->mnAscent <<
              ",descent=" << pMetric->mnDescent <<
              ",extleading=" << pMetric->mnExtLeading <<
              ",intleading=" << pMetric->mnIntLeading <<
              ",width=" << pMetric->mnWidth <<
              "}" );
}

sal_Bool QuartzSalGraphics::GetGlyphBoundRect( sal_GlyphId /*nGlyphId*/, Rectangle& /*rRect*/ )
{
    /* TODO: create a Ghyph iterator to keep track ot 'state' between call */
    return false;
}

sal_Bool QuartzSalGraphics::GetGlyphOutline( sal_GlyphId /*nGlyphId*/, basegfx::B2DPolyPolygon& /*rPolyPoly*/ )
{
    /* TODO */
    return false;
}

void QuartzSalGraphics::GetGlyphWidths( const PhysicalFontFace* /*pFontData*/, bool /*bVertical*/,
                                      Int32Vector& /*rGlyphWidths*/, Ucs2UIntMap& /*rUnicodeEnc*/ )
{
}

sal_uLong QuartzSalGraphics::GetKernPairs( sal_uLong, ImplKernPairData* )
{
    return 0;
}

bool QuartzSalGraphics::GetImplFontCapabilities(vcl::FontCapabilities &rFontCapabilities) const
{
    if( !m_style )
    {
        return false;
    }
    CoreTextPhysicalFontFace* font_face = m_style->GetFontFace();
    if( !font_face)
    {
        return false;
    }
    return font_face->GetImplFontCapabilities(rFontCapabilities);
}

const ImplFontCharMap* QuartzSalGraphics::GetImplFontCharMap() const
{
    if( !m_style )
    {
        return NULL;
    }
    CoreTextPhysicalFontFace* font_face = m_style->GetFontFace();
    if( !font_face)
    {
        return ImplFontCharMap::GetDefaultMap();
    }
    return font_face->GetImplFontCharMap();
}

#ifndef IOS

bool QuartzSalGraphics::GetRawFontData( const PhysicalFontFace* pFontFace,
                     std::vector<unsigned char>& rBuffer, bool* pJustCFF )
{
    const CoreTextPhysicalFontFace* font_face = static_cast<const CoreTextPhysicalFontFace*>(pFontFace);

    return font_face->GetRawFontData(rBuffer, pJustCFF);
}

#endif

SystemFontData QuartzSalGraphics::GetSysFontData( int /* nFallbacklevel */ ) const
{
    SystemFontData aSysFontData;
    aSysFontData.nSize = sizeof( SystemFontData );
    aSysFontData.bAntialias = true;

    CTFontRef font = CTFontCreateUIFontForLanguage(kCTFontSystemFontType, 0.0, NULL);
    font = (CTFontRef)CFRetain(font);
    aSysFontData.rCTFont = font;

    CTFontRef italic_font = CTFontCreateCopyWithSymbolicTraits( font,
                                                                0.0,
                                                                NULL,
                                                                kCTFontItalicTrait,
                                                                kCTFontItalicTrait + kCTFontBoldTrait);
    aSysFontData.bFakeItalic = italic_font ? false : true;
    SafeCFRelease(italic_font);

    CTFontRef bold_font = CTFontCreateCopyWithSymbolicTraits( font,
                                                              0.0,
                                                              NULL,
                                                              kCTFontBoldTrait,
                                                              kCTFontItalicTrait + kCTFontBoldTrait);
    aSysFontData.bFakeBold = bold_font ? false : true;
    SafeCFRelease(bold_font);

    CTFontRef vertical_font = CTFontCreateCopyWithSymbolicTraits( font,
                                                                  0.0,
                                                                  NULL,
                                                                  kCTFontVerticalTrait,
                                                                  kCTFontVerticalTrait);
    aSysFontData.bVerticalCharacterType = vertical_font ? true : false;
    SafeCFRelease(vertical_font);

    return aSysFontData;
}

sal_uInt16 QuartzSalGraphics::SetFont( FontSelectPattern* pReqFont, int /*nFallbackLevel*/ )
{
    m_style->SetFont(pReqFont);

    return 0;
}

void QuartzSalGraphics::SetTextColor( SalColor nSalColor )
{
    m_style->SetColor(nSalColor);
}

#ifdef IOS

// Note that "QuartzSalGraphics" *is* SvpSalGraphics for iOS

bool SvpSalGraphics::CheckContext()
{
    const basegfx::B2IVector size = m_aDevice->getSize();
    const basegfx::B2IVector bufferSize = m_aDevice->getBufferSize();
    const sal_Int32 scanlineStride = m_aDevice->getScanlineStride();
    basebmp::RawMemorySharedArray pixelBuffer = m_aDevice->getBuffer();

    SAL_INFO( "vcl.ios",
              "CheckContext: device=" << m_aDevice.get() <<
              " size=" << size.getX() << "x" << size.getY() <<
              (m_aDevice->isTopDown() ? " top-down" : " bottom-up") <<
              " stride=" << scanlineStride <<
              " bufferSize=(" << bufferSize.getX() << "," << bufferSize.getY() << ")" );

    switch( m_aDevice->getScanlineFormat() ) {
    case basebmp::Format::EIGHT_BIT_PAL:
        mrContext = CGBitmapContextCreate(pixelBuffer.get(),
                                          bufferSize.getX(), bufferSize.getY(),
                                          8, scanlineStride,
                                          CGColorSpaceCreateDeviceGray(),
                                          kCGImageAlphaNone);
        break;
    case basebmp::Format::THIRTYTWO_BIT_TC_MASK_RGBA:
        mrContext = CGBitmapContextCreate(pixelBuffer.get(),
                                          bufferSize.getX(), bufferSize.getY(),
                                          8, scanlineStride,
                                          CGColorSpaceCreateDeviceRGB(),
                                          kCGImageAlphaNoneSkipLast);
        break;
    default:
        SAL_INFO( "vcl.ios", "CheckContext: unsupported color format " << basebmp::Format::formatName( m_aDevice->getScanlineFormat() ) );
    }

    SAL_WARN_IF( mrContext == NULL, "vcl.ios", "CheckContext() failed" );

    // Should we also clip the context? (Then we need to add a
    // getBounds() function to BitmapDevice.)

    if( mrContext != NULL && m_aDevice->isTopDown() )
    {
        CGContextTranslateCTM( mrContext, 0, bufferSize.getY() );
        CGContextScaleCTM( mrContext, 1, -1 );
    }

    SAL_INFO( "vcl.ios", "CheckContext: context=" << mrContext );

    return ( mrContext != NULL );
}

CGContextRef SvpSalGraphics::GetContext()
{
    if ( !mrContext )
        CheckContext();

    return mrContext;
}

#endif

/* vim:set shiftwidth=4 softtabstop=4 expandtab: */