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, 223 insertions, 0 deletions

diff --git a/vcl/win/gdi/salvd.cxx b/vcl/win/gdi/salvd.cxx
new file mode 100644
index 000000000..7b3e7e11f
--- /dev/null
+++ b/vcl/win/gdi/salvd.cxx
@@ -0,0 +1,223 @@
+/* -*- 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 <svsys.h>
+
+#include <comphelper/windowserrorstring.hxx>
+
+#include <vcl/sysdata.hxx>
+
+#include <win/wincomp.hxx>
+#include <win/saldata.hxx>
+#include <win/salinst.h>
+#include <win/salgdi.h>
+#include <win/salvd.h>
+#include <sal/log.hxx>
+#include <o3tl/temporary.hxx>
+
+HBITMAP WinSalVirtualDevice::ImplCreateVirDevBitmap(HDC hDC, tools::Long nDX, tools::Long nDY, sal_uInt16 nBitCount, void **ppData)
+{
+    HBITMAP hBitmap;
+
+    if ( nBitCount == 1 )
+    {
+        hBitmap = CreateBitmap( static_cast<int>(nDX), static_cast<int>(nDY), 1, 1, nullptr );
+        SAL_WARN_IF( !hBitmap, "vcl", "CreateBitmap failed: " << WindowsErrorString( GetLastError() ) );
+        ppData = nullptr;
+    }
+    else
+    {
+        if (nBitCount == 0)
+            nBitCount = static_cast<WORD>(GetDeviceCaps(hDC, BITSPIXEL));
+
+        // #146839# Don't use CreateCompatibleBitmap() - there seem to
+        // be built-in limits for those HBITMAPs, at least this fails
+        // rather often on large displays/multi-monitor setups.
+        BITMAPINFO aBitmapInfo;
+        aBitmapInfo.bmiHeader.biSize = sizeof( BITMAPINFOHEADER );
+        aBitmapInfo.bmiHeader.biWidth = nDX;
+        aBitmapInfo.bmiHeader.biHeight = nDY;
+        aBitmapInfo.bmiHeader.biPlanes = 1;
+        aBitmapInfo.bmiHeader.biBitCount = nBitCount;
+        aBitmapInfo.bmiHeader.biCompression = BI_RGB;
+        aBitmapInfo.bmiHeader.biSizeImage = 0;
+        aBitmapInfo.bmiHeader.biXPelsPerMeter = 0;
+        aBitmapInfo.bmiHeader.biYPelsPerMeter = 0;
+        aBitmapInfo.bmiHeader.biClrUsed = 0;
+        aBitmapInfo.bmiHeader.biClrImportant = 0;
+
+        hBitmap = CreateDIBSection( hDC, &aBitmapInfo,
+                                    DIB_RGB_COLORS, ppData, nullptr,
+                                    0 );
+        SAL_WARN_IF( !hBitmap, "vcl", "CreateDIBSection failed: " << WindowsErrorString( GetLastError() ) );
+    }
+
+    return hBitmap;
+}
+
+std::unique_ptr<SalVirtualDevice> WinSalInstance::CreateVirtualDevice( SalGraphics& rSGraphics,
+                                                       tools::Long &nDX, tools::Long &nDY,
+                                                       DeviceFormat /*eFormat*/,
+                                                       const SystemGraphicsData* pData )
+{
+    WinSalGraphics& rGraphics = static_cast<WinSalGraphics&>(rSGraphics);
+    HDC hDC = nullptr;
+
+    if( pData )
+    {
+        hDC = (pData->hDC) ? pData->hDC : GetDC(pData->hWnd);
+        if (hDC)
+        {
+            nDX = GetDeviceCaps( hDC, HORZRES );
+            nDY = GetDeviceCaps( hDC, VERTRES );
+        }
+        else
+        {
+            nDX = 0;
+            nDY = 0;
+        }
+    }
+    else
+    {
+        hDC = CreateCompatibleDC( rGraphics.getHDC() );
+        SAL_WARN_IF( !hDC, "vcl", "CreateCompatibleDC failed: " << WindowsErrorString( GetLastError() ) );
+    }
+
+    if (!hDC)
+        return nullptr;
+
+    sal_uInt16 nBitCount = 0;
+    HBITMAP hBmp = nullptr;
+    if (!pData)
+    {
+        // #124826# continue even if hBmp could not be created
+        // if we would return a failure in this case, the process
+        // would terminate which is not required
+        hBmp = WinSalVirtualDevice::ImplCreateVirDevBitmap(rGraphics.getHDC(),
+                                                           nDX, nDY, nBitCount,
+                                                           &o3tl::temporary<void*>(nullptr));
+    }
+
+    const bool bForeignDC = pData != nullptr && pData->hDC != nullptr;
+    const SalData* pSalData = GetSalData();
+
+    WinSalVirtualDevice* pVDev = new WinSalVirtualDevice(hDC, hBmp, nBitCount,
+                                                         bForeignDC, nDX, nDY);
+
+    WinSalGraphics* pVirGraphics = new WinSalGraphics(WinSalGraphics::VIRTUAL_DEVICE,
+                                                      rGraphics.isScreen(), nullptr, pVDev);
+
+    // by default no! mirroring for VirtualDevices, can be enabled with EnableRTL()
+    pVirGraphics->SetLayout( SalLayoutFlags::NONE );
+    pVirGraphics->setHDC(hDC);
+
+    if ( pSalData->mhDitherPal && pVirGraphics->isScreen() )
+    {
+        pVirGraphics->setPalette(pSalData->mhDitherPal);
+        RealizePalette( hDC );
+    }
+
+    pVDev->setGraphics(pVirGraphics);
+
+    return std::unique_ptr<SalVirtualDevice>(pVDev);
+}
+
+WinSalVirtualDevice::WinSalVirtualDevice(HDC hDC, HBITMAP hBMP, sal_uInt16 nBitCount, bool bForeignDC, tools::Long nWidth, tools::Long nHeight)
+    : mhLocalDC(hDC),          // HDC or 0 for Cache Device
+      mhBmp(hBMP),             // Memory Bitmap
+      mnBitCount(nBitCount),   // BitCount (0 or 1)
+      mbGraphics(false),       // is Graphics used
+      mbForeignDC(bForeignDC), // uses a foreign DC instead of a bitmap
+      mnWidth(nWidth),
+      mnHeight(nHeight)
+{
+    // Default Bitmap
+    if (hBMP)
+        mhDefBmp = SelectBitmap(hDC, hBMP);
+    else
+        mhDefBmp = nullptr;
+
+    // insert VirDev into list of virtual devices
+    SalData* pSalData = GetSalData();
+    mpNext = pSalData->mpFirstVD;
+    pSalData->mpFirstVD = this;
+}
+
+WinSalVirtualDevice::~WinSalVirtualDevice()
+{
+    // remove VirDev from list of virtual devices
+    SalData* pSalData = GetSalData();
+    WinSalVirtualDevice** ppVirDev = &pSalData->mpFirstVD;
+    for(; (*ppVirDev != this) && *ppVirDev; ppVirDev = &(*ppVirDev)->mpNext );
+    if( *ppVirDev )
+        *ppVirDev = mpNext;
+
+    HDC hDC = mpGraphics->getHDC();
+    // restore the mpGraphics' original HDC values, so the HDC can be deleted in the !mbForeignDC case
+    mpGraphics->setHDC(nullptr);
+
+    if( mhDefBmp )
+        SelectBitmap(hDC, mhDefBmp);
+    if( !mbForeignDC )
+        DeleteDC(hDC);
+}
+
+SalGraphics* WinSalVirtualDevice::AcquireGraphics()
+{
+    if ( mbGraphics )
+        return nullptr;
+
+    if ( mpGraphics )
+        mbGraphics = true;
+
+    return mpGraphics.get();
+}
+
+void WinSalVirtualDevice::ReleaseGraphics( SalGraphics* )
+{
+    mbGraphics = false;
+}
+
+bool WinSalVirtualDevice::SetSize( tools::Long nDX, tools::Long nDY )
+{
+    if( mbForeignDC || !mhBmp )
+        return true;    // ???
+
+    HBITMAP hNewBmp = ImplCreateVirDevBitmap(getHDC(), nDX, nDY, mnBitCount,
+                                             &o3tl::temporary<void*>(nullptr));
+    if (!hNewBmp)
+    {
+        mnWidth = 0;
+        mnHeight = 0;
+        return false;
+    }
+
+    mnWidth = nDX;
+    mnHeight = nDY;
+
+    SelectBitmap(getHDC(), hNewBmp);
+    mhBmp.reset(hNewBmp);
+
+    if (mpGraphics)
+        mpGraphics->GetImpl()->Init();
+
+    return true;
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */