b99464ef2f
Commit 9eb732a320 fixed crashing when
printing SkiaSalBitmaps to a non-Skia SalGraphics. However, the fix
almost always makes two copies of the SkiaSalBitmap's bitmap data: the
first copy is made in SkiaSalBitmap::AcquireBuffer() and then
QuartzSalBitmap makes a copy of the first copy.
By making QuartzSalBitmap's methods that return a CGImageRef pure
virtual, a non-Skia SalGraphics can now create a CGImageRef directly
from a SkiaSalBitmap's Skia bitmap data without copying to any
intermediate buffers.
Change-Id: If6ab7f175889cb4839d8a2461b7be7671e575c08
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/144856
Tested-by: Jenkins
Reviewed-by: Noel Grandin <noel.grandin@collabora.co.uk>
107 lines
4.3 KiB
Text
107 lines
4.3 KiB
Text
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/*
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* This file is part of the LibreOffice project.
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*
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* This file incorporates work covered by the following license notice:
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed
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* with this work for additional information regarding copyright
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* ownership. The ASF licenses this file to you under the Apache
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* License, Version 2.0 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.apache.org/licenses/LICENSE-2.0 .
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*/
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#include <skia/salbmp.hxx>
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#include <skia/zone.hxx>
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#include <SkBitmap.h>
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#include <SkCanvas.h>
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#include <SkPaint.h>
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#include <quartz/cgutils.h>
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#ifdef MACOSX
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#include <osx/saldata.hxx>
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#else
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#include <svdata.hxx>
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#endif
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#include <skia/quartz/cgutils.h>
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CGImageRef SkiaSalBitmap::CreateWithMask(const SalBitmap& rMask, int nX, int nY, int nWidth,
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int nHeight) const
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{
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return CreateWithSalBitmapAndMask( *this, rMask, nX, nY, nWidth, nHeight );
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}
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/** creates an image from the given rectangle, replacing all black pixels
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with nMaskColor and make all other full transparent */
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CGImageRef SkiaSalBitmap::CreateColorMask(int nX, int nY, int nWidth, int nHeight,
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Color nMaskColor) const
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{
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SkiaZone zone;
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SkBitmap targetBitmap;
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if (!targetBitmap.tryAllocPixels(SkImageInfo::Make(nWidth, nHeight, kN32_SkColorType, kPremul_SkAlphaType)))
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return nullptr;
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SkPaint paint;
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paint.setBlendMode(SkBlendMode::kSrc); // set as is
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SkMatrix matrix; // The image is needed upside-down.
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matrix.preTranslate(0, targetBitmap.height());
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matrix.setConcat(matrix, SkMatrix::Scale(1, -1));
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SkCanvas canvas(targetBitmap);
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canvas.concat(matrix);
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canvas.drawImageRect(GetSkImage(), SkRect::MakeXYWH(nX, nY, nWidth, nHeight), SkRect::MakeXYWH(0, 0, nWidth, nHeight), SkSamplingOptions(), &paint, SkCanvas::SrcRectConstraint::kFast_SrcRectConstraint);
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canvas.flush();
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const SkColor maskColor = SkiaHelper::toSkColor(nMaskColor);
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for (int y = 0; y < targetBitmap.height(); y++)
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{
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SkColor *pPixels = targetBitmap.getAddr32(0, y);
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for (int x = 0; x < targetBitmap.width(); x++)
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*pPixels++ = (*pPixels == SK_ColorBLACK ? maskColor : SK_ColorTRANSPARENT);
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}
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targetBitmap.setImmutable();
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CGContextRef xContext = CGBitmapContextCreate(targetBitmap.getAddr32(0, 0), targetBitmap.width(), targetBitmap.height(), 8, targetBitmap.rowBytes(), GetSalData()->mxRGBSpace, SkiaToCGBitmapType(targetBitmap.colorType(), targetBitmap.alphaType()));
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if (!xContext)
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return nullptr;
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CGImageRef xCroppedImage = CGBitmapContextCreateImage(xContext);
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CGContextRelease(xContext);
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return xCroppedImage;
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}
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CGImageRef SkiaSalBitmap::CreateCroppedImage(int nX, int nY, int nWidth, int nHeight) const
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{
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SkiaZone zone;
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SkBitmap targetBitmap;
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if (!targetBitmap.tryAllocPixels(SkImageInfo::Make(nWidth, nHeight, kN32_SkColorType, kPremul_SkAlphaType)))
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return nullptr;
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SkPaint paint;
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paint.setBlendMode(SkBlendMode::kSrc); // set as is
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SkMatrix matrix; // The image is needed upside-down.
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matrix.preTranslate(0, targetBitmap.height());
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matrix.setConcat(matrix, SkMatrix::Scale(1, -1));
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SkCanvas canvas(targetBitmap);
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canvas.concat(matrix);
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canvas.drawImageRect(GetSkImage(), SkRect::MakeXYWH(nX, nY, nWidth, nHeight), SkRect::MakeXYWH(0, 0, nWidth, nHeight), SkSamplingOptions(), &paint, SkCanvas::SrcRectConstraint::kFast_SrcRectConstraint);
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canvas.flush();
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targetBitmap.setImmutable();
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CGContextRef xContext = CGBitmapContextCreate(targetBitmap.getAddr32(0, 0), targetBitmap.width(), targetBitmap.height(), 8, targetBitmap.rowBytes(), GetSalData()->mxRGBSpace, SkiaToCGBitmapType(targetBitmap.colorType(), targetBitmap.alphaType()));
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if (!xContext)
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return nullptr;
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CGImageRef xCroppedImage = CGBitmapContextCreateImage(xContext);
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CGContextRelease(xContext);
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return xCroppedImage;
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}
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