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, 529 insertions, 0 deletions

diff --git a/vcl/osx/salmacos.cxx b/vcl/osx/salmacos.cxx
new file mode 100644
index 000000000..700b252cf
--- /dev/null
+++ b/vcl/osx/salmacos.cxx
@@ -0,0 +1,529 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4; fill-column: 100 -*- */
+/*
+ * 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 .
+ */
+
+// This file contains the macOS-specific versions of the functions which were touched in the commit
+// to fix tdf#138122. The iOS-specific versions of these functions are kept (for now, when this
+// comment is written) as they were before that commit in vcl/ios/salios.cxx.
+
+#include <sal/config.h>
+#include <sal/log.hxx>
+#include <osl/diagnose.h>
+
+#include <vcl/bitmap.hxx>
+
+#include <quartz/salbmp.h>
+#include <quartz/salgdi.h>
+#include <quartz/salvd.h>
+#include <quartz/utils.h>
+
+#include <osx/saldata.hxx>
+
+// From salbmp.cxx
+
+bool QuartzSalBitmap::Create(CGLayerHolder const & rLayerHolder, int nBitmapBits, int nX, int nY, int nWidth, int nHeight, bool bFlipped)
+{
+
+    // TODO: Bitmaps from scaled layers are reverted to single precision. This is a workaround only unless bitmaps with precision of
+    // source layer are implemented.
+
+    SAL_WARN_IF(!rLayerHolder.isSet(), "vcl", "QuartzSalBitmap::Create() from non-layered context");
+
+    // sanitize input parameters
+    if( nX < 0 ) {
+        nWidth += nX;
+        nX = 0;
+    }
+
+    if( nY < 0 ) {
+        nHeight += nY;
+        nY = 0;
+    }
+
+    CGSize aLayerSize = CGLayerGetSize(rLayerHolder.get());
+    const float fScale = rLayerHolder.getScale();
+    aLayerSize.width /= fScale;
+    aLayerSize.height /= fScale;
+
+    if( nWidth >= static_cast<int>(aLayerSize.width) - nX )
+        nWidth = static_cast<int>(aLayerSize.width) - nX;
+
+    if( nHeight >= static_cast<int>(aLayerSize.height) - nY )
+        nHeight = static_cast<int>(aLayerSize.height) - nY;
+
+    if( (nWidth < 0) || (nHeight < 0) )
+        nWidth = nHeight = 0;
+
+    // initialize properties
+    mnWidth  = nWidth;
+    mnHeight = nHeight;
+    mnBits   = nBitmapBits ? nBitmapBits : 32;
+
+    // initialize drawing context
+    CreateContext();
+
+    // copy layer content into the bitmap buffer
+    const CGPoint aSrcPoint = { static_cast<CGFloat>(-nX * fScale), static_cast<CGFloat>(-nY * fScale) };
+    if (maGraphicContext.isSet())
+    {
+        if( bFlipped )
+        {
+            CGContextTranslateCTM(maGraphicContext.get(), 0, +mnHeight);
+            CGContextScaleCTM(maGraphicContext.get(), +1, -1);
+        }
+        maGraphicContext.saveState();
+        CGContextScaleCTM(maGraphicContext.get(), 1 / fScale, 1 / fScale);
+        CGContextDrawLayerAtPoint(maGraphicContext.get(), aSrcPoint, rLayerHolder.get());
+        maGraphicContext.restoreState();
+    }
+    return true;
+}
+
+// From salgdicommon.cxx
+
+void AquaGraphicsBackend::copyBits(const SalTwoRect &rPosAry, SalGraphics *pSrcGraphics)
+{
+    AquaSharedAttributes* pSrcShared = nullptr;
+
+    if (pSrcGraphics)
+    {
+        AquaSalGraphics* pSrc = static_cast<AquaSalGraphics*>(pSrcGraphics);
+        pSrcShared = &pSrc->getAquaGraphicsBackend()->GetShared();
+    }
+    else
+        pSrcShared = &mrShared;
+
+    if (rPosAry.mnSrcWidth <= 0 || rPosAry.mnSrcHeight <= 0 || rPosAry.mnDestWidth <= 0 || rPosAry.mnDestHeight <= 0)
+        return;
+    if (!mrShared.maContextHolder.isSet())
+        return;
+
+    SAL_WARN_IF (!pSrcShared->maLayer.isSet(), "vcl.quartz", "AquaSalGraphics::copyBits() from non-layered graphics this=" << this);
+
+    // Layered graphics are copied by AquaSalGraphics::copyScaledArea() which is able to consider the layer's scaling.
+
+    if (pSrcShared->maLayer.isSet())
+        copyScaledArea(rPosAry.mnDestX, rPosAry.mnDestY, rPosAry.mnSrcX, rPosAry.mnSrcY,
+                       rPosAry.mnSrcWidth, rPosAry.mnSrcHeight, pSrcShared);
+    else
+    {
+        mrShared.applyXorContext();
+        pSrcShared->applyXorContext();
+        std::shared_ptr<SalBitmap> pBitmap = pSrcGraphics->GetImpl()->getBitmap(rPosAry.mnSrcX, rPosAry.mnSrcY,
+                                                                        rPosAry.mnSrcWidth, rPosAry.mnSrcHeight);
+        if (pBitmap)
+        {
+            SalTwoRect aPosAry(rPosAry);
+            aPosAry.mnSrcX = 0;
+            aPosAry.mnSrcY = 0;
+            drawBitmap(aPosAry, *pBitmap);
+        }
+    }
+}
+
+void AquaGraphicsBackend::copyArea(tools::Long nDstX, tools::Long nDstY,tools::Long nSrcX, tools::Long nSrcY,
+                               tools::Long nSrcWidth, tools::Long nSrcHeight, bool)
+{
+    if (!mrShared.maContextHolder.isSet())
+        return;
+
+    // Functionality is implemented in protected member function AquaSalGraphics::copyScaledArea() which requires an additional
+    // parameter of type SalGraphics to be used in AquaSalGraphics::copyBits() too.
+
+    copyScaledArea(nDstX, nDstY, nSrcX, nSrcY, nSrcWidth, nSrcHeight, &mrShared);
+}
+
+void AquaGraphicsBackend::copyScaledArea(tools::Long nDstX, tools::Long nDstY,tools::Long nSrcX, tools::Long nSrcY,
+                                     tools::Long nSrcWidth, tools::Long nSrcHeight, AquaSharedAttributes* pSrcShared)
+{
+    SAL_WARN_IF(!mrShared.maLayer.isSet(), "vcl.quartz",
+                "AquaSalGraphics::copyScaledArea() without graphics context or for non-layered graphics this=" << this);
+
+    if (!mrShared.maContextHolder.isSet() || !mrShared.maLayer.isSet())
+        return;
+
+    // Determine scaled geometry of source and target area assuming source and target area have the same scale
+
+    float fScale = mrShared.maLayer.getScale();
+    CGFloat nScaledSourceX = nSrcX * fScale;
+    CGFloat nScaledSourceY = nSrcY * fScale;
+    CGFloat nScaledTargetX = nDstX * fScale;
+    CGFloat nScaledTargetY = nDstY * fScale;
+    CGFloat nScaledSourceWidth = nSrcWidth * fScale;
+    CGFloat nScaledSourceHeight = nSrcHeight * fScale;
+
+    // Apply XOR context and get copy context from current graphics context or XOR context
+
+    mrShared.applyXorContext();
+    mrShared.maContextHolder.saveState();
+    CGContextRef xCopyContext = mrShared.maContextHolder.get();
+    if (mrShared.mpXorEmulation && mrShared.mpXorEmulation->IsEnabled())
+        xCopyContext = mrShared.mpXorEmulation->GetTargetContext();
+
+    // Set scale matrix of copy context to consider layer scaling
+
+    CGContextScaleCTM(xCopyContext, 1 / fScale, 1 / fScale);
+
+    // Creating an additional layer is required for drawing with the required scale and extent at the drawing destination
+    // thereafter.
+
+    CGLayerHolder aSourceLayerHolder(pSrcShared->maLayer);
+    const CGSize aSourceSize = CGSizeMake(nScaledSourceWidth, nScaledSourceHeight);
+    aSourceLayerHolder.set(CGLayerCreateWithContext(xCopyContext, aSourceSize, nullptr));
+    const CGContextRef xSourceContext = CGLayerGetContext(aSourceLayerHolder.get());
+    CGPoint aSrcPoint = CGPointMake(-nScaledSourceX, -nScaledSourceY);
+    if (pSrcShared->isFlipped())
+    {
+        CGContextTranslateCTM(xSourceContext, 0, nScaledSourceHeight);
+        CGContextScaleCTM(xSourceContext, 1, -1);
+        aSrcPoint.y = nScaledSourceY + nScaledSourceHeight - mrShared.mnHeight * fScale;
+    }
+    CGContextSetBlendMode(xSourceContext, kCGBlendModeCopy);
+    CGContextDrawLayerAtPoint(xSourceContext, aSrcPoint, pSrcShared->maLayer.get());
+
+    // Copy source area from additional layer to target area
+
+    const CGRect aTargetRect = CGRectMake(nScaledTargetX, nScaledTargetY, nScaledSourceWidth, nScaledSourceHeight);
+    CGContextSetBlendMode(xCopyContext, kCGBlendModeCopy);
+    CGContextDrawLayerInRect(xCopyContext, aTargetRect, aSourceLayerHolder.get());
+
+    // Housekeeping on exit
+
+    mrShared.maContextHolder.restoreState();
+    if (aSourceLayerHolder.get() != mrShared.maLayer.get())
+        CGLayerRelease(aSourceLayerHolder.get());
+
+    mrShared.refreshRect(nDstX, nDstY, nSrcWidth, nSrcHeight);
+}
+
+void AquaSalGraphics::SetVirDevGraphics(SalVirtualDevice* pVirDev, CGLayerHolder const &rLayer, CGContextRef xContext, int nBitmapDepth)
+{
+    SAL_INFO("vcl.quartz", "SetVirDevGraphics() this=" << this << " layer=" << rLayer.get() << " context=" << xContext);
+
+    // Set member variables
+
+    InvalidateContext();
+    maShared.mbWindow = false;
+    maShared.mbPrinter = false;
+    maShared.mbVirDev = true;
+    maShared.maLayer = rLayer;
+    maShared.mnBitmapDepth = nBitmapDepth;
+
+    mpBackend->UpdateGeometryProvider(pVirDev);
+
+    // Get size and scale from layer if set else from bitmap and sal::aqua::getWindowScaling(), which is used to determine
+    // scaling for direct graphics output too
+
+    CGSize aSize;
+    float fScale;
+    if (maShared.maLayer.isSet())
+    {
+        maShared.maContextHolder.set(CGLayerGetContext(maShared.maLayer.get()));
+        aSize = CGLayerGetSize(maShared.maLayer.get());
+        fScale = maShared.maLayer.getScale();
+    }
+    else
+    {
+        maShared.maContextHolder.set(xContext);
+        if (!xContext)
+            return;
+        aSize.width = CGBitmapContextGetWidth(xContext);
+        aSize.height = CGBitmapContextGetHeight(xContext);
+        fScale = sal::aqua::getWindowScaling();
+    }
+    maShared.mnWidth = aSize.width / fScale;
+    maShared.mnHeight = aSize.height / fScale;
+
+    // Set color space for fill and stroke
+
+    CGColorSpaceRef aColorSpace = GetSalData()->mxRGBSpace;
+    CGContextSetFillColorSpace(maShared.maContextHolder.get(), aColorSpace);
+    CGContextSetStrokeColorSpace(maShared.maContextHolder.get(), aColorSpace);
+
+    // Apply scale matrix to virtual device graphics
+
+    CGContextScaleCTM(maShared.maContextHolder.get(), fScale, fScale);
+
+    // Apply XOR emulation if required
+
+    if (maShared.mpXorEmulation)
+    {
+        maShared.mpXorEmulation->SetTarget(maShared.mnWidth, maShared.mnHeight, maShared.mnBitmapDepth, maShared.maContextHolder.get(), maShared.maLayer.get());
+        if (maShared.mpXorEmulation->IsEnabled())
+            maShared.maContextHolder.set(maShared.mpXorEmulation->GetMaskContext());
+    }
+
+    // Housekeeping on exit
+
+    maShared.maContextHolder.saveState();
+    maShared.setState();
+
+    SAL_INFO("vcl.quartz", "SetVirDevGraphics() this=" << this <<
+             " (" << maShared.mnWidth << "x" << maShared.mnHeight << ") fScale=" << fScale << " mnBitmapDepth=" << maShared.mnBitmapDepth);
+}
+
+void XorEmulation::SetTarget(int nWidth, int nHeight, int nTargetDepth, CGContextRef xTargetContext, CGLayerRef xTargetLayer)
+{
+    SAL_INFO("vcl.quartz", "XorEmulation::SetTarget() this=" << this <<
+             " (" << nWidth << "x" << nHeight << ") depth=" << nTargetDepth <<
+             " context=" << xTargetContext << " layer=" << xTargetLayer);
+
+    // Prepare to replace old mask and temporary context
+
+    if (m_xMaskContext)
+    {
+        CGContextRelease(m_xMaskContext);
+        delete[] m_pMaskBuffer;
+        m_xMaskContext = nullptr;
+        m_pMaskBuffer = nullptr;
+        if (m_xTempContext)
+        {
+            CGContextRelease(m_xTempContext);
+            delete[] m_pTempBuffer;
+            m_xTempContext = nullptr;
+            m_pTempBuffer = nullptr;
+        }
+    }
+
+    // Return early if there is nothing more to do
+
+    if (!xTargetContext)
+        return;
+
+    // Retarget drawing operations to the XOR mask
+
+    m_xTargetLayer = xTargetLayer;
+    m_xTargetContext = xTargetContext;
+
+    // Prepare creation of matching bitmaps
+
+    CGColorSpaceRef aCGColorSpace = GetSalData()->mxRGBSpace;
+    CGBitmapInfo aCGBmpInfo = kCGImageAlphaNoneSkipFirst;
+    int nBitDepth = nTargetDepth;
+    if (!nBitDepth)
+        nBitDepth = 32;
+    int nBytesPerRow = 4;
+    const size_t nBitsPerComponent = (nBitDepth == 16) ? 5 : 8;
+    if (nBitDepth <= 8)
+    {
+        aCGColorSpace = GetSalData()->mxGraySpace;
+        aCGBmpInfo = kCGImageAlphaNone;
+        nBytesPerRow = 1;
+    }
+    float fScale = sal::aqua::getWindowScaling();
+    size_t nScaledWidth = nWidth * fScale;
+    size_t nScaledHeight = nHeight * fScale;
+    nBytesPerRow *= nScaledWidth;
+    m_nBufferLongs = (nScaledHeight * nBytesPerRow + sizeof(sal_uLong) - 1) / sizeof(sal_uLong);
+
+    // Create XOR mask context
+
+    m_pMaskBuffer = new sal_uLong[m_nBufferLongs];
+    m_xMaskContext = CGBitmapContextCreate(m_pMaskBuffer, nScaledWidth, nScaledHeight,
+                                           nBitsPerComponent, nBytesPerRow, aCGColorSpace, aCGBmpInfo);
+    SAL_WARN_IF(!m_xMaskContext, "vcl.quartz", "mask context creation failed");
+
+    // Reset XOR mask to black
+
+    memset(m_pMaskBuffer, 0, m_nBufferLongs * sizeof(sal_uLong));
+
+    // Create bitmap context for manual XOR unless target context is a bitmap context
+
+    if (nTargetDepth)
+        m_pTempBuffer = static_cast<sal_uLong*>(CGBitmapContextGetData(m_xTargetContext));
+    if (!m_pTempBuffer)
+    {
+        m_pTempBuffer = new sal_uLong[m_nBufferLongs];
+        m_xTempContext = CGBitmapContextCreate(m_pTempBuffer, nScaledWidth, nScaledHeight,
+                                               nBitsPerComponent, nBytesPerRow, aCGColorSpace, aCGBmpInfo);
+        SAL_WARN_IF(!m_xTempContext, "vcl.quartz", "temp context creation failed");
+    }
+
+    // Initialize XOR mask context for drawing
+
+    CGContextSetFillColorSpace(m_xMaskContext, aCGColorSpace);
+    CGContextSetStrokeColorSpace(m_xMaskContext, aCGColorSpace);
+    CGContextSetShouldAntialias(m_xMaskContext, false);
+
+    // Improve XOR emulation for monochrome contexts
+
+    if (aCGColorSpace == GetSalData()->mxGraySpace)
+        CGContextSetBlendMode(m_xMaskContext, kCGBlendModeDifference);
+
+    // Initialize XOR mask transformation matrix and apply scale matrix to consider layer scaling
+
+    const CGAffineTransform aCTM = CGContextGetCTM(xTargetContext);
+    CGContextConcatCTM(m_xMaskContext, aCTM);
+    if (m_xTempContext)
+    {
+        CGContextConcatCTM( m_xTempContext, aCTM );
+        CGContextScaleCTM(m_xTempContext, 1 / fScale, 1 / fScale);
+    }
+    CGContextSaveGState(m_xMaskContext);
+}
+
+bool XorEmulation::UpdateTarget()
+{
+    SAL_INFO("vcl.quartz", "XorEmulation::UpdateTarget() this=" << this);
+
+    if (!IsEnabled())
+        return false;
+
+    // Update temporary bitmap buffer
+
+    if (m_xTempContext)
+    {
+        SAL_WARN_IF(m_xTargetContext == nullptr, "vcl.quartz", "Target layer is NULL");
+        CGContextDrawLayerAtPoint(m_xTempContext, CGPointZero, m_xTargetLayer);
+    }
+
+    // XOR using XOR mask (sufficient for simple color manipulations as well as for complex XOR clipping used in metafiles)
+
+    const sal_uLong *pSrc = m_pMaskBuffer;
+    sal_uLong *pDst = m_pTempBuffer;
+    for (int i = m_nBufferLongs; --i >= 0;)
+        *(pDst++) ^= *(pSrc++);
+
+    // Write back XOR results to target context
+
+    if (m_xTempContext)
+    {
+        CGImageRef xXorImage = CGBitmapContextCreateImage(m_xTempContext);
+        size_t nWidth = CGImageGetWidth(xXorImage);
+        size_t nHeight = CGImageGetHeight(xXorImage);
+
+        // Set scale matrix of target context to consider layer scaling and update target context
+        // TODO: Update minimal change rectangle
+
+        const CGRect aFullRect = CGRectMake(0, 0, nWidth, nHeight);
+        CGContextSaveGState(m_xTargetContext);
+        float fScale = sal::aqua::getWindowScaling();
+        CGContextScaleCTM(m_xTargetContext, 1 / fScale, 1 / fScale);
+        CGContextDrawImage(m_xTargetContext, aFullRect, xXorImage);
+        CGContextRestoreGState(m_xTargetContext);
+        CGImageRelease(xXorImage);
+    }
+
+    // Reset XOR mask to black again
+    // TODO: Not needed for last update
+
+    memset(m_pMaskBuffer, 0, m_nBufferLongs * sizeof(sal_uLong));
+
+    // TODO: Return FALSE if target was not changed
+
+    return true;
+}
+
+// From salvd.cxx
+
+void AquaSalVirtualDevice::Destroy()
+{
+    SAL_INFO( "vcl.virdev", "AquaSalVirtualDevice::Destroy() this=" << this << " mbForeignContext=" << mbForeignContext );
+
+    if (mbForeignContext)
+    {
+        // Do not delete mxContext that we have received from outside VCL
+        maLayer.set(nullptr);
+        return;
+    }
+
+    if (maLayer.isSet())
+    {
+        if( mpGraphics )
+        {
+            mpGraphics->SetVirDevGraphics(this, nullptr, nullptr);
+        }
+        CGLayerRelease(maLayer.get());
+        maLayer.set(nullptr);
+    }
+
+    if (maBitmapContext.isSet())
+    {
+        CGContextRelease(maBitmapContext.get());
+        maBitmapContext.set(nullptr);
+    }
+}
+
+bool AquaSalVirtualDevice::SetSize(tools::Long nDX, tools::Long nDY)
+{
+    SAL_INFO("vcl.virdev", "AquaSalVirtualDevice::SetSize() this=" << this <<
+             " (" << nDX << "x" << nDY << ") mbForeignContext=" << (mbForeignContext ? "YES" : "NO"));
+
+    // Do not delete/resize graphics context if it has been received from outside VCL
+
+    if (mbForeignContext)
+        return true;
+
+    // Do not delete/resize graphics context if no change of geometry has been requested
+
+    float fScale;
+    if (maLayer.isSet())
+    {
+        fScale = maLayer.getScale();
+        const CGSize aSize = CGLayerGetSize(maLayer.get());
+        if ((nDX == aSize.width / fScale) && (nDY  == aSize.height / fScale))
+            return true;
+    }
+
+    // Destroy graphics context if change of geometry has been requested
+
+    Destroy();
+
+    // Prepare new graphics context for initialization, use scaling independent of prior graphics context calculated by
+    // sal::aqua::getWindowScaling(), which is used to determine scaling for direct graphics output too
+
+    mnWidth = nDX;
+    mnHeight = nDY;
+    fScale = sal::aqua::getWindowScaling();
+    CGColorSpaceRef aColorSpace;
+    uint32_t nFlags;
+    if (mnBitmapDepth && (mnBitmapDepth < 16))
+    {
+        mnBitmapDepth = 8;
+        aColorSpace = GetSalData()->mxGraySpace;
+        nFlags = kCGImageAlphaNone;
+    }
+    else
+    {
+        mnBitmapDepth = 32;
+        aColorSpace = GetSalData()->mxRGBSpace;
+
+        nFlags = uint32_t(kCGImageAlphaNoneSkipFirst) | uint32_t(kCGBitmapByteOrder32Host);
+    }
+
+    // Allocate buffer for virtual device graphics as bitmap context to store graphics with highest required (scaled) resolution
+
+    size_t nScaledWidth = mnWidth * fScale;
+    size_t nScaledHeight = mnHeight * fScale;
+    size_t nBytesPerRow = mnBitmapDepth * nScaledWidth / 8;
+    maBitmapContext.set(CGBitmapContextCreate(nullptr, nScaledWidth, nScaledHeight, 8, nBytesPerRow, aColorSpace, nFlags));
+
+    SAL_INFO("vcl.virdev", "AquaSalVirtualDevice::SetSize() this=" << this <<
+             " fScale=" << fScale << " mnBitmapDepth=" << mnBitmapDepth);
+
+    CGSize aLayerSize = { static_cast<CGFloat>(nScaledWidth), static_cast<CGFloat>(nScaledHeight) };
+    maLayer.set(CGLayerCreateWithContext(maBitmapContext.get(), aLayerSize, nullptr));
+    maLayer.setScale(fScale);
+    mpGraphics->SetVirDevGraphics(this, maLayer, CGLayerGetContext(maLayer.get()), mnBitmapDepth);
+
+    SAL_WARN_IF(!maBitmapContext.isSet(), "vcl.quartz", "No context");
+
+    return maLayer.isSet();
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */