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Diffstat (limited to 'vcl/osx/salgdiutils.cxx')
| -rw-r--r-- | vcl/osx/salgdiutils.cxx | 289 |
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: */ |