Adding upstream version 4:7.4.7.upstream/4%7.4.7upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 256 insertions, 0 deletions

diff --git a/canvas/source/directx/dx_canvasbitmap.cxx b/canvas/source/directx/dx_canvasbitmap.cxx
new file mode 100644
index 000000000..217d3edd2
--- /dev/null
+++ b/canvas/source/directx/dx_canvasbitmap.cxx
@@ -0,0 +1,256 @@
+/* -*- 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 <sal/config.h>
+
+#include <memory>
+
+#include <cppuhelper/supportsservice.hxx>
+#include <tools/diagnose_ex.h>
+#include <vcl/bitmapex.hxx>
+
+#include <canvas/canvastools.hxx>
+
+#include "dx_canvasbitmap.hxx"
+#include "dx_impltools.hxx"
+
+
+using namespace ::com::sun::star;
+
+namespace dxcanvas
+{
+    CanvasBitmap::CanvasBitmap( const IBitmapSharedPtr& rBitmap,
+                                const DeviceRef&        rDevice ) :
+        mpDevice( rDevice ),
+        mpBitmap( rBitmap )
+    {
+        ENSURE_OR_THROW( mpDevice.is() && mpBitmap,
+                         "CanvasBitmap::CanvasBitmap(): Invalid surface or device" );
+
+        maCanvasHelper.setDevice( *mpDevice );
+        maCanvasHelper.setTarget( mpBitmap );
+    }
+
+    void CanvasBitmap::disposeThis()
+    {
+        mpBitmap.reset();
+        mpDevice.clear();
+
+        // forward to parent
+        CanvasBitmap_Base::disposeThis();
+    }
+
+    namespace {
+
+    struct AlphaDIB
+    {
+        BITMAPINFOHEADER bmiHeader;
+        RGBQUAD          bmiColors[256];
+        AlphaDIB()
+            : bmiHeader({0,0,0,1,8,BI_RGB,0,0,0,0,0})
+        {
+            for (size_t i = 0; i < 256; ++i)
+            {
+                // this here fills palette with grey level colors, starting
+                // from 0,0,0 up to 255,255,255
+                BYTE const b(i);
+                bmiColors[i] = { b,b,b,b };
+            }
+        }
+    };
+
+    }
+
+    uno::Any SAL_CALL CanvasBitmap::getFastPropertyValue( sal_Int32 nHandle )
+    {
+        uno::Any aRes;
+        // 0 ... get BitmapEx
+        // 1 ... get Pixbuf with bitmap RGB content
+        // 2 ... get Pixbuf with bitmap alpha mask
+        switch( nHandle )
+        {
+            // sorry, no BitmapEx here...
+            case 0:
+                aRes <<= reinterpret_cast<sal_Int64>( nullptr );
+                break;
+
+            case 1:
+            {
+                if(!mpBitmap->hasAlpha())
+                {
+                    HBITMAP aHBmp;
+                    mpBitmap->getBitmap()->GetHBITMAP(Gdiplus::Color(), &aHBmp );
+
+                    uno::Sequence< uno::Any > args{ uno::Any(reinterpret_cast<sal_Int64>(aHBmp)) };
+                    aRes <<= args;
+                }
+                else
+                {
+                    // need to copy&convert the bitmap, since dx
+                    // canvas uses inline alpha channel
+                    HDC hScreenDC=GetDC(nullptr);
+                    const basegfx::B2IVector aSize(mpBitmap->getSize());
+                    HBITMAP hBmpBitmap = CreateCompatibleBitmap( hScreenDC,
+                                                                 aSize.getX(),
+                                                                 aSize.getY() );
+                    if( !hBmpBitmap )
+                        return aRes;
+
+                    BITMAPINFOHEADER aBIH;
+
+                    aBIH.biSize = sizeof( BITMAPINFOHEADER );
+                    aBIH.biWidth = aSize.getX();
+                    aBIH.biHeight = -aSize.getY();
+                    aBIH.biPlanes = 1;
+                    aBIH.biBitCount = 32;
+                    aBIH.biCompression = BI_RGB; // expects pixel in
+                                                 // bbggrrxx format
+                                                 // (little endian)
+                    aBIH.biSizeImage = 0;
+                    aBIH.biXPelsPerMeter = 0;
+                    aBIH.biYPelsPerMeter = 0;
+                    aBIH.biClrUsed = 0;
+                    aBIH.biClrImportant = 0;
+
+                    Gdiplus::BitmapData aBmpData;
+                    aBmpData.Width       = aSize.getX();
+                    aBmpData.Height      = aSize.getY();
+                    aBmpData.Stride      = 4*aBmpData.Width;
+                    aBmpData.PixelFormat = PixelFormat32bppARGB;
+                    aBmpData.Scan0       = nullptr;
+                    const Gdiplus::Rect aRect( 0,0,aSize.getX(),aSize.getY() );
+                    BitmapSharedPtr pGDIPlusBitmap=mpBitmap->getBitmap();
+                    if( Gdiplus::Ok != pGDIPlusBitmap->LockBits( &aRect,
+                                                                 Gdiplus::ImageLockModeRead,
+                                                                 PixelFormat32bppARGB, // outputs ARGB (big endian)
+                                                                 &aBmpData ) )
+                    {
+                        // failed to lock, bail out
+                        return aRes;
+                    }
+
+                    // now aBmpData.Scan0 contains our bits - push
+                    // them into HBITMAP, ignoring alpha
+                    SetDIBits( hScreenDC, hBmpBitmap, 0, aSize.getY(), aBmpData.Scan0, reinterpret_cast<PBITMAPINFO>(&aBIH), DIB_RGB_COLORS );
+
+                    pGDIPlusBitmap->UnlockBits( &aBmpData );
+
+                    uno::Sequence< uno::Any > args{ uno::Any(reinterpret_cast<sal_Int64>(hBmpBitmap)) };
+                    aRes <<= args;
+                }
+            }
+            break;
+
+            case 2:
+            {
+                if(!mpBitmap->hasAlpha())
+                {
+                    return aRes;
+                }
+                else
+                {
+                    static AlphaDIB aDIB;
+
+                    // need to copy&convert the bitmap, since dx
+                    // canvas uses inline alpha channel
+                    HDC hScreenDC=GetDC(nullptr);
+                    const basegfx::B2IVector aSize(mpBitmap->getSize());
+                    HBITMAP hBmpBitmap = CreateCompatibleBitmap( hScreenDC, aSize.getX(), aSize.getY() );
+                    if( !hBmpBitmap )
+                        return aRes;
+
+                    aDIB.bmiHeader.biSize = sizeof( BITMAPINFOHEADER );
+                    aDIB.bmiHeader.biWidth = aSize.getX();
+                    aDIB.bmiHeader.biHeight = -aSize.getY();
+                    aDIB.bmiHeader.biPlanes = 1;
+                    aDIB.bmiHeader.biBitCount = 8;
+                    aDIB.bmiHeader.biCompression = BI_RGB;
+                    aDIB.bmiHeader.biSizeImage = 0;
+                    aDIB.bmiHeader.biXPelsPerMeter = 0;
+                    aDIB.bmiHeader.biYPelsPerMeter = 0;
+                    aDIB.bmiHeader.biClrUsed = 0;
+                    aDIB.bmiHeader.biClrImportant = 0;
+
+                    Gdiplus::BitmapData aBmpData;
+                    aBmpData.Width       = aSize.getX();
+                    aBmpData.Height      = aSize.getY();
+                    aBmpData.Stride      = 4*aBmpData.Width;
+                    aBmpData.PixelFormat = PixelFormat32bppARGB;
+                    aBmpData.Scan0       = nullptr;
+                    const Gdiplus::Rect aRect( 0,0,aSize.getX(),aSize.getY() );
+                    BitmapSharedPtr pGDIPlusBitmap=mpBitmap->getBitmap();
+                    if( Gdiplus::Ok != pGDIPlusBitmap->LockBits( &aRect,
+                                                                 Gdiplus::ImageLockModeRead,
+                                                                 PixelFormat32bppARGB, // outputs ARGB (big endian)
+                                                                 &aBmpData ) )
+                    {
+                        // failed to lock, bail out
+                        return aRes;
+                    }
+
+                    // copy only alpha channel to pAlphaBits
+                    const sal_Int32 nScanWidth((aSize.getX() + 3) & ~3);
+                    std::unique_ptr<sal_uInt8[]> pAlphaBits( new sal_uInt8[nScanWidth*aSize.getY()] );
+                    const sal_uInt8* pInBits=static_cast<sal_uInt8*>(aBmpData.Scan0);
+                    pInBits+=3;
+                    for( sal_Int32 y=0; y<aSize.getY(); ++y )
+                    {
+                        sal_uInt8* pOutBits=pAlphaBits.get()+y*nScanWidth;
+                        for( sal_Int32 x=0; x<aSize.getX(); ++x )
+                        {
+                            *pOutBits++ = 255-*pInBits;
+                            pInBits += 4;
+                        }
+                    }
+
+                    pGDIPlusBitmap->UnlockBits( &aBmpData );
+
+                    // set bits to newly create HBITMAP
+                    SetDIBits( hScreenDC, hBmpBitmap, 0,
+                               aSize.getY(), pAlphaBits.get(),
+                               reinterpret_cast<PBITMAPINFO>(&aDIB), DIB_RGB_COLORS );
+
+                    uno::Sequence< uno::Any > args{ uno::Any(reinterpret_cast<sal_Int64>(hBmpBitmap)) };
+                    aRes <<= args;
+                }
+            }
+            break;
+        }
+
+        return aRes;
+    }
+
+    OUString SAL_CALL CanvasBitmap::getImplementationName(  )
+    {
+        return "DXCanvas.CanvasBitmap";
+    }
+
+    sal_Bool SAL_CALL CanvasBitmap::supportsService( const OUString& ServiceName )
+    {
+        return cppu::supportsService( this, ServiceName );
+    }
+
+    uno::Sequence< OUString > SAL_CALL CanvasBitmap::getSupportedServiceNames(  )
+    {
+        return { "com.sun.star.rendering.CanvasBitmap" };
+    }
+
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */