libreoffice/canvas/source/directx/dx_bitmap.cxx

/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*************************************************************************
 *
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * Copyright 2000, 2010 Oracle and/or its affiliates.
 *
 * OpenOffice.org - a multi-platform office productivity suite
 *
 * This file is part of OpenOffice.org.
 *
 * OpenOffice.org is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License version 3
 * only, as published by the Free Software Foundation.
 *
 * OpenOffice.org is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Lesser General Public License version 3 for more details
 * (a copy is included in the LICENSE file that accompanied this code).
 *
 * You should have received a copy of the GNU Lesser General Public License
 * version 3 along with OpenOffice.org.  If not, see
 * <http://www.openoffice.org/license.html>
 * for a copy of the LGPLv3 License.
 *
 ************************************************************************/

// MARKER(update_precomp.py): autogen include statement, do not remove
#include "precompiled_canvas.hxx"

#include "dx_bitmap.hxx"
#include "dx_graphicsprovider.hxx"
#include "dx_impltools.hxx"

#include <canvas/debug.hxx>
#include <tools/diagnose_ex.h>

#include <basegfx/matrix/b2dhommatrix.hxx>
#include <basegfx/range/b2irange.hxx>

#if defined(DX_DEBUG_IMAGES)
# if OSL_DEBUG_LEVEL > 0
#  include <imdebug.h>
#  undef min
#  undef max
# endif
#endif

using namespace ::com::sun::star;

namespace dxcanvas
{
    //////////////////////////////////////////////////////////////////////////////////
    // DXBitmap::DXBitmap
    //////////////////////////////////////////////////////////////////////////////////

    DXBitmap::DXBitmap( const BitmapSharedPtr& rBitmap,
                        bool                   bWithAlpha ) :
        mpGdiPlusUser( GDIPlusUser::createInstance() ),
        maSize(rBitmap->GetWidth(),rBitmap->GetHeight()),
        mpBitmap(rBitmap),
        mpGraphics(tools::createGraphicsFromBitmap(mpBitmap)),
        mbAlpha(bWithAlpha)
    {
    }

    DXBitmap::DXBitmap( const ::basegfx::B2IVector& rSize,
                        bool                        bWithAlpha ) :
        mpGdiPlusUser( GDIPlusUser::createInstance() ),
        maSize(rSize),
        mpBitmap(),
        mpGraphics(),
        mbAlpha(bWithAlpha)
    {
        // create container for pixel data
        if(mbAlpha)
        {
            mpBitmap.reset(
                new Gdiplus::Bitmap(
                    maSize.getX(),
                    maSize.getY(),
                    PixelFormat32bppARGB));
        }
        else
        {
            mpBitmap.reset(
                new Gdiplus::Bitmap(
                    maSize.getX(),
                    maSize.getY(),
                    PixelFormat24bppRGB));
        }

        mpGraphics.reset( tools::createGraphicsFromBitmap(mpBitmap) );
    }

    BitmapSharedPtr DXBitmap::getBitmap() const
    {
        return mpBitmap;
    }

    GraphicsSharedPtr DXBitmap::getGraphics()
    {
        return mpGraphics;
    }

    ::basegfx::B2IVector DXBitmap::getSize() const
    {
        return maSize;
    }

    bool DXBitmap::hasAlpha() const
    {
        return mbAlpha;
    }

    uno::Sequence< sal_Int8 > DXBitmap::getData( rendering::IntegerBitmapLayout&     /*bitmapLayout*/,
                                                 const geometry::IntegerRectangle2D& rect )
    {
        uno::Sequence< sal_Int8 > aRes( (rect.X2-rect.X1)*(rect.Y2-rect.Y1)*4 ); // TODO(F1): Be format-agnostic here

        const Gdiplus::Rect aRect( tools::gdiPlusRectFromIntegerRectangle2D( rect ) );

        Gdiplus::BitmapData aBmpData;
        aBmpData.Width       = rect.X2-rect.X1;
        aBmpData.Height      = rect.Y2-rect.Y1;
        aBmpData.Stride      = 4*aBmpData.Width;
        aBmpData.PixelFormat = PixelFormat32bppARGB;
        aBmpData.Scan0       = aRes.getArray();

        // TODO(F1): Support more pixel formats natively

        // read data from bitmap
        if( Gdiplus::Ok != mpBitmap->LockBits( &aRect,
                                                      Gdiplus::ImageLockModeRead | Gdiplus::ImageLockModeUserInputBuf,
                                                      PixelFormat32bppARGB, // TODO(F1): Adapt to
                                                      // Graphics native
                                                      // format/change
                                                      // getMemoryLayout
                                                      &aBmpData ) )
        {
            // failed to lock, bail out
            return uno::Sequence< sal_Int8 >();
        }

        mpBitmap->UnlockBits( &aBmpData );

        return aRes;
    }

    void DXBitmap::setData( const uno::Sequence< sal_Int8 >&        data,
                            const rendering::IntegerBitmapLayout&   /*bitmapLayout*/,
                            const geometry::IntegerRectangle2D&     rect )
    {
        const Gdiplus::Rect aRect( tools::gdiPlusRectFromIntegerRectangle2D( rect ) );

        Gdiplus::BitmapData aBmpData;
        aBmpData.Width       = rect.X2-rect.X1;
        aBmpData.Height      = rect.Y2-rect.Y1;
        aBmpData.Stride      = 4*aBmpData.Width;
        aBmpData.PixelFormat = PixelFormat32bppARGB;
        aBmpData.Scan0       = (void*)data.getConstArray();

        // TODO(F1): Support more pixel formats natively

        if( Gdiplus::Ok != mpBitmap->LockBits( &aRect,
                                                      Gdiplus::ImageLockModeWrite | Gdiplus::ImageLockModeUserInputBuf,
                                                      PixelFormat32bppARGB, // TODO: Adapt to
                                                      // Graphics native
                                                      // format/change
                                                      // getMemoryLayout
                                                      &aBmpData ) )
        {
            throw uno::RuntimeException();
        }

        // commit data to bitmap
        mpBitmap->UnlockBits( &aBmpData );
    }

    void DXBitmap::setPixel( const uno::Sequence< sal_Int8 >&       color,
                             const rendering::IntegerBitmapLayout&  /*bitmapLayout*/,
                             const geometry::IntegerPoint2D&        pos )
    {
        const geometry::IntegerSize2D aSize( maSize.getX(),maSize.getY() );

        ENSURE_ARG_OR_THROW( pos.X >= 0 && pos.X < aSize.Width,
                             "CanvasHelper::setPixel: X coordinate out of bounds" );
        ENSURE_ARG_OR_THROW( pos.Y >= 0 && pos.Y < aSize.Height,
                             "CanvasHelper::setPixel: Y coordinate out of bounds" );
        ENSURE_ARG_OR_THROW( color.getLength() > 3,
                             "CanvasHelper::setPixel: not enough color components" );

        if( Gdiplus::Ok != mpBitmap->SetPixel( pos.X, pos.Y,
                                                      Gdiplus::Color( tools::sequenceToArgb( color ))))
        {
            throw uno::RuntimeException();
        }
    }

    uno::Sequence< sal_Int8 > DXBitmap::getPixel( rendering::IntegerBitmapLayout&   /*bitmapLayout*/,
                                                  const geometry::IntegerPoint2D&   pos )
    {
        const geometry::IntegerSize2D aSize( maSize.getX(),maSize.getY() );

        ENSURE_ARG_OR_THROW( pos.X >= 0 && pos.X < aSize.Width,
                             "CanvasHelper::getPixel: X coordinate out of bounds" );
        ENSURE_ARG_OR_THROW( pos.Y >= 0 && pos.Y < aSize.Height,
                             "CanvasHelper::getPixel: Y coordinate out of bounds" );

        Gdiplus::Color aColor;

        if( Gdiplus::Ok != mpBitmap->GetPixel( pos.X, pos.Y, &aColor ) )
            return uno::Sequence< sal_Int8 >();

        return tools::argbToIntSequence(aColor.GetValue());
    }

}

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