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, 289 insertions, 0 deletions

diff --git a/vcl/osx/salgdiutils.cxx b/vcl/osx/salgdiutils.cxx
new file mode 100644
index 000000000..7b088864d
--- /dev/null
+++ b/vcl/osx/salgdiutils.cxx
@@ -0,0 +1,289 @@
+/* -*- 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 <cstdint>
+
+#include <sal/log.hxx>
+
+#include <basegfx/polygon/b2dpolygon.hxx>
+#include <basegfx/polygon/b2dpolygontools.hxx>
+#include <basegfx/range/b2drectangle.hxx>
+#include <basegfx/range/b2irange.hxx>
+#include <basegfx/vector/b2ivector.hxx>
+#include <vcl/svapp.hxx>
+
+#include <quartz/salgdi.h>
+#include <quartz/utils.h>
+#include <osx/salframe.h>
+#include <osx/saldata.hxx>
+
+// TODO: Scale will be set to 2.0f as default after implementation of full scaled display support . This will allow moving of
+// windows between non retina and retina displays without blurry text and graphics. Static variables have to be removed thereafter.
+
+// Currently scaled display support is not implemented for bitmaps. This will cause a slight performance degradation on displays
+// with single precision. To preserve performance for now, window scaling is only activated if at least one display with double
+// precision is present. Moving windows between displays is then possible without blurry text and graphics too. Adapting window
+// scaling when displays are added while application is running is not supported.
+
+static bool  bWindowScaling = false;
+static float fWindowScale = 1.0f;
+
+namespace sal::aqua
+{
+float getWindowScaling()
+{
+    if (!bWindowScaling)
+    {
+        NSArray *aScreens = [NSScreen screens];
+        if (aScreens != nullptr)
+        {
+            int nScreens = [aScreens count];
+            for (int i = 0; i < nScreens; i++)
+            {
+                float fScale = [[aScreens objectAtIndex:i] backingScaleFactor];
+                if (fScale > fWindowScale)
+                  fWindowScale = fScale;
+            }
+            bWindowScaling = true;
+        }
+        if( const char* env = getenv("SAL_FORCE_HIDPI_SCALING"))
+        {
+            fWindowScale = atof(env);
+            bWindowScaling = true;
+        }
+    }
+    return fWindowScale;
+}
+} // end aqua
+
+void AquaSalGraphics::SetWindowGraphics( AquaSalFrame* pFrame )
+{
+    maShared.mpFrame = pFrame;
+    maShared.mbWindow = true;
+    maShared.mbPrinter = false;
+    maShared.mbVirDev = false;
+    mpBackend->UpdateGeometryProvider(pFrame);
+}
+
+void AquaSalGraphics::SetPrinterGraphics( CGContextRef xContext, sal_Int32 nDPIX, sal_Int32 nDPIY )
+{
+    maShared.mbWindow = false;
+    maShared.mbPrinter = true;
+    maShared.mbVirDev = false;
+
+    maShared.maContextHolder.set(xContext);
+    mnRealDPIX = nDPIX;
+    mnRealDPIY = nDPIY;
+
+    // a previously set clip path is now invalid
+    maShared.unsetClipPath();
+
+    if (maShared.maContextHolder.isSet())
+    {
+        CGContextSetFillColorSpace( maShared.maContextHolder.get(), GetSalData()->mxRGBSpace );
+        CGContextSetStrokeColorSpace( maShared.maContextHolder.get(), GetSalData()->mxRGBSpace );
+        CGContextSaveGState( maShared.maContextHolder.get() );
+        maShared.setState();
+    }
+
+    mpBackend->UpdateGeometryProvider(nullptr);
+}
+
+void AquaSalGraphics::InvalidateContext()
+{
+    UnsetState();
+
+    CGContextRelease(maShared.maContextHolder.get());
+    CGContextRelease(maShared.maBGContextHolder.get());
+    CGContextRelease(maShared.maCSContextHolder.get());
+
+    maShared.maContextHolder.set(nullptr);
+    maShared.maCSContextHolder.set(nullptr);
+    maShared.maBGContextHolder.set(nullptr);
+}
+
+void AquaSalGraphics::UnsetState()
+{
+    if (maShared.maBGContextHolder.isSet())
+    {
+        CGContextRelease(maShared.maBGContextHolder.get());
+        maShared.maBGContextHolder.set(nullptr);
+    }
+    if (maShared.maCSContextHolder.isSet())
+    {
+        CGContextRelease(maShared.maCSContextHolder.get());
+        maShared.maBGContextHolder.set(nullptr);
+    }
+    if (maShared.maContextHolder.isSet())
+    {
+        maShared.maContextHolder.restoreState();
+        maShared.maContextHolder.set(nullptr);
+    }
+    maShared.unsetState();
+}
+
+/**
+ * (re-)create the off-screen maLayer we render everything to if
+ * necessary: eg. not initialized yet, or it has an incorrect size.
+ */
+bool AquaSharedAttributes::checkContext()
+{
+    if (mbWindow && mpFrame && (mpFrame->getNSWindow() || Application::IsBitmapRendering()))
+    {
+        const unsigned int nWidth = mpFrame->maGeometry.nWidth;
+        const unsigned int nHeight = mpFrame->maGeometry.nHeight;
+        const float fScale = sal::aqua::getWindowScaling();
+        CGLayerRef rReleaseLayer = nullptr;
+
+        // check if a new drawing context is needed (e.g. after a resize)
+        if( (unsigned(mnWidth) != nWidth) || (unsigned(mnHeight) != nHeight) )
+        {
+            mnWidth = nWidth;
+            mnHeight = nHeight;
+            // prepare to release the corresponding resources
+            if (maLayer.isSet())
+            {
+                rReleaseLayer = maLayer.get();
+            }
+            else if (maContextHolder.isSet())
+            {
+                CGContextRelease(maContextHolder.get());
+            }
+            CGContextRelease(maBGContextHolder.get());
+            CGContextRelease(maCSContextHolder.get());
+
+            maContextHolder.set(nullptr);
+            maBGContextHolder.set(nullptr);
+            maCSContextHolder.set(nullptr);
+            maLayer.set(nullptr);
+        }
+
+        if (!maContextHolder.isSet())
+        {
+            const int nBitmapDepth = 32;
+
+            float nScaledWidth = mnWidth * fScale;
+            float nScaledHeight = mnHeight * fScale;
+
+            const CGSize aLayerSize = { static_cast<CGFloat>(nScaledWidth), static_cast<CGFloat>(nScaledHeight) };
+
+            const int nBytesPerRow = (nBitmapDepth * nScaledWidth) / 8;
+            std::uint32_t nFlags = std::uint32_t(kCGImageAlphaNoneSkipFirst)
+                | std::uint32_t(kCGBitmapByteOrder32Host);
+            maBGContextHolder.set(CGBitmapContextCreate(
+                nullptr, nScaledWidth, nScaledHeight, 8, nBytesPerRow, GetSalData()->mxRGBSpace, nFlags));
+
+            maLayer.set(CGLayerCreateWithContext(maBGContextHolder.get(), aLayerSize, nullptr));
+            maLayer.setScale(fScale);
+
+            nFlags = std::uint32_t(kCGImageAlphaPremultipliedFirst)
+                | std::uint32_t(kCGBitmapByteOrder32Host);
+            maCSContextHolder.set(CGBitmapContextCreate(
+                nullptr, nScaledWidth, nScaledHeight, 8, nBytesPerRow, GetSalData()->mxRGBSpace, nFlags));
+
+            CGContextRef xDrawContext = CGLayerGetContext(maLayer.get());
+            maContextHolder = xDrawContext;
+
+            if (rReleaseLayer)
+            {
+                // copy original layer to resized layer
+                if (maContextHolder.isSet())
+                {
+                    CGContextDrawLayerAtPoint(maContextHolder.get(), CGPointZero, rReleaseLayer);
+                }
+                CGLayerRelease(rReleaseLayer);
+            }
+
+            if (maContextHolder.isSet())
+            {
+                CGContextTranslateCTM(maContextHolder.get(), 0, nScaledHeight);
+                CGContextScaleCTM(maContextHolder.get(), 1.0, -1.0);
+                CGContextSetFillColorSpace(maContextHolder.get(), GetSalData()->mxRGBSpace);
+                CGContextSetStrokeColorSpace(maContextHolder.get(), GetSalData()->mxRGBSpace);
+                // apply a scale matrix so everything is auto-magically scaled
+                CGContextScaleCTM(maContextHolder.get(), fScale, fScale);
+                maContextHolder.saveState();
+                setState();
+
+                // re-enable XOR emulation for the new context
+                if (mpXorEmulation)
+                    mpXorEmulation->SetTarget(mnWidth, mnHeight, mnBitmapDepth, maContextHolder.get(), maLayer.get());
+            }
+        }
+    }
+
+    SAL_WARN_IF(!maContextHolder.isSet() && !mbPrinter, "vcl", "<<<WARNING>>> AquaSalGraphics::CheckContext() FAILED!!!!");
+
+    return maContextHolder.isSet();
+}
+
+/**
+ * Blit the contents of our internal maLayer state to the
+ * associated window, if any; cf. drawRect event handling
+ * on the frame.
+ */
+void AquaSalGraphics::UpdateWindow( NSRect& )
+{
+    if (!maShared.mpFrame)
+    {
+        return;
+    }
+
+    NSGraphicsContext* pContext = [NSGraphicsContext currentContext];
+    if (maShared.maLayer.isSet() && pContext != nullptr)
+    {
+        CGContextHolder rCGContextHolder([pContext CGContext]);
+
+        rCGContextHolder.saveState();
+
+        CGMutablePathRef rClip = maShared.mpFrame->getClipPath();
+        if (rClip)
+        {
+            CGContextBeginPath(rCGContextHolder.get());
+            CGContextAddPath(rCGContextHolder.get(), rClip );
+            CGContextClip(rCGContextHolder.get());
+        }
+
+        maShared.applyXorContext();
+
+        const CGSize aSize = maShared.maLayer.getSizePoints();
+        const CGRect aRect = CGRectMake(0, 0, aSize.width,  aSize.height);
+        const CGRect aRectPoints = { CGPointZero, maShared.maLayer.getSizePixels() };
+        CGContextSetBlendMode(maShared.maCSContextHolder.get(), kCGBlendModeCopy);
+        CGContextDrawLayerInRect(maShared.maCSContextHolder.get(), aRectPoints, maShared.maLayer.get());
+
+        CGImageRef img = CGBitmapContextCreateImage(maShared.maCSContextHolder.get());
+        CGImageRef displayColorSpaceImage = CGImageCreateCopyWithColorSpace(img, [[maShared.mpFrame->getNSWindow() colorSpace] CGColorSpace]);
+        CGContextSetBlendMode(rCGContextHolder.get(), kCGBlendModeCopy);
+        CGContextDrawImage(rCGContextHolder.get(), aRect, displayColorSpaceImage);
+
+        CGImageRelease(img);
+        CGImageRelease(displayColorSpaceImage);
+
+        rCGContextHolder.restoreState();
+    }
+    else
+    {
+        SAL_WARN_IF(!maShared.mpFrame->mbInitShow, "vcl", "UpdateWindow called on uneligible graphics");
+    }
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */