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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 09:06:44 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 09:06:44 +0000
commited5640d8b587fbcfed7dd7967f3de04b37a76f26 (patch)
tree7a5f7c6c9d02226d7471cb3cc8fbbf631b415303 /vcl/win/gdi/salvd.cxx
parentInitial commit. (diff)
downloadlibreoffice-upstream.tar.xz
libreoffice-upstream.zip
Adding upstream version 4:7.4.7.upstream/4%7.4.7upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'vcl/win/gdi/salvd.cxx')
-rw-r--r--vcl/win/gdi/salvd.cxx223
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: */