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/* -*- 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 <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>
void AquaSalGraphics::SetWindowGraphics( AquaSalFrame* pFrame )
{
mpFrame = pFrame;
mbWindow = true;
mbPrinter = false;
mbVirDev = false;
}
void AquaSalGraphics::SetPrinterGraphics( CGContextRef xContext, long nDPIX, long nDPIY )
{
mbWindow = false;
mbPrinter = true;
mbVirDev = false;
maContextHolder.set(xContext);
mnRealDPIX = nDPIX;
mnRealDPIY = nDPIY;
// a previously set clip path is now invalid
if( mxClipPath )
{
CGPathRelease( mxClipPath );
mxClipPath = nullptr;
}
if (maContextHolder.isSet())
{
CGContextSetFillColorSpace( maContextHolder.get(), GetSalData()->mxRGBSpace );
CGContextSetStrokeColorSpace( maContextHolder.get(), GetSalData()->mxRGBSpace );
CGContextSaveGState( maContextHolder.get() );
SetState();
}
}
void AquaSalGraphics::InvalidateContext()
{
UnsetState();
CGContextRelease(maContextHolder.get());
CGContextRelease(maBGContextHolder.get());
CGContextRelease(maCSContextHolder.get());
maContextHolder.set(nullptr);
maCSContextHolder.set(nullptr);
maBGContextHolder.set(nullptr);
}
void AquaSalGraphics::UnsetState()
{
if (maBGContextHolder.isSet())
{
CGContextRelease(maBGContextHolder.get());
maBGContextHolder.set(nullptr);
}
if (maCSContextHolder.isSet())
{
CGContextRelease(maCSContextHolder.get());
maBGContextHolder.set(nullptr);
}
if (maContextHolder.isSet())
{
maContextHolder.restoreState();
maContextHolder.set(nullptr);
}
if( mxClipPath )
{
CGPathRelease( mxClipPath );
mxClipPath = nullptr;
}
}
/**
* (re-)create the off-screen maLayer we render everything to if
* necessary: eg. not initialized yet, or it has an incorrect size.
*/
bool AquaSalGraphics::CheckContext()
{
if (mbWindow && mpFrame && (mpFrame->getNSWindow() || Application::IsBitmapRendering()))
{
const unsigned int nWidth = mpFrame->maGeometry.nWidth;
const unsigned int nHeight = mpFrame->maGeometry.nHeight;
// Let's get the window scaling factor if possible, or use 1.0
// as the scaling factor.
float fScale = 1.0f;
if (mpFrame->getNSWindow())
fScale = [mpFrame->getNSWindow() backingScaleFactor];
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;
int nFlags = kCGImageAlphaNoneSkipFirst | kCGBitmapByteOrder32Host;
maBGContextHolder.set(CGBitmapContextCreate(
NULL, nScaledWidth, nScaledHeight, 8, nBytesPerRow, GetSalData()->mxRGBSpace, nFlags));
maLayer.set(CGLayerCreateWithContext(maBGContextHolder.get(), aLayerSize, nullptr));
maLayer.setScale(fScale);
nFlags = kCGImageAlphaPremultipliedFirst | kCGBitmapByteOrder32Host;
maCSContextHolder.set(CGBitmapContextCreate(
NULL, 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();
}
CGContextRef AquaSalGraphics::GetContext()
{
if (!maContextHolder.isSet())
{
CheckContext();
}
return maContextHolder.get();
}
/**
* 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( !mpFrame )
{
return;
}
NSGraphicsContext* pContext = [NSGraphicsContext currentContext];
if (maLayer.isSet() && pContext != nullptr)
{
CGContextHolder rCGContextHolder([pContext CGContext]);
rCGContextHolder.saveState();
CGMutablePathRef rClip = mpFrame->getClipPath();
if (rClip)
{
CGContextBeginPath(rCGContextHolder.get());
CGContextAddPath(rCGContextHolder.get(), rClip );
CGContextClip(rCGContextHolder.get());
}
ApplyXorContext();
const CGSize aSize = maLayer.getSizePoints();
const CGRect aRect = CGRectMake(0, 0, aSize.width, aSize.height);
const CGRect aRectPoints = { CGPointZero, maLayer.getSizePixels() };
CGContextSetBlendMode(maCSContextHolder.get(), kCGBlendModeCopy);
CGContextDrawLayerInRect(maCSContextHolder.get(), aRectPoints, maLayer.get());
CGImageRef img = CGBitmapContextCreateImage(maCSContextHolder.get());
CGImageRef displayColorSpaceImage = CGImageCreateCopyWithColorSpace(img, [[mpFrame->getNSWindow() colorSpace] CGColorSpace]);
CGContextSetBlendMode(rCGContextHolder.get(), kCGBlendModeCopy);
CGContextDrawImage(rCGContextHolder.get(), aRect, displayColorSpaceImage);
CGImageRelease(img);
CGImageRelease(displayColorSpaceImage);
rCGContextHolder.restoreState();
}
else
{
SAL_WARN_IF( !mpFrame->mbInitShow, "vcl", "UpdateWindow called on uneligible graphics" );
}
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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