diff options
| author | Noel Grandin <noel.grandin@collabora.co.uk> | 2018-05-30 15:06:39 +0200 |
|---|---|---|
| committer | Noel Grandin <noel.grandin@collabora.co.uk> | 2018-05-31 08:30:42 +0200 |
| commit | 8b0ded99e5f8d71c9b763db264ac445b5f665234 (patch) | |
| tree | 7809fdb80842f964a63bf1921029970c7cf93ca1 /vcl | |
| parent | 98630a6edf91183dbd8f1bdb02616889251927de (diff) | |
move some CanvasHelper::implDrawBitmap inside vcl
part of making mask and alpha internal details of Bitmap/BitmapEx
Change-Id: I87ca24af18a29f5eb8a5761c5d95ae2806d97e77
Reviewed-on: https://gerrit.libreoffice.org/55078
Reviewed-by: Michael Meeks <michael.meeks@collabora.com>
Tested-by: Jenkins <ci@libreoffice.org>
Diffstat (limited to 'vcl')
| -rw-r--r-- | vcl/Library_vcl.mk | 1 | ||||
| -rw-r--r-- | vcl/source/bitmap/BitmapAlphaClampFilter.cxx | 47 |
2 files changed, 48 insertions, 0 deletions
diff --git a/vcl/Library_vcl.mk b/vcl/Library_vcl.mk index 38a2460cf81f..fd99be295c98 100644 --- a/vcl/Library_vcl.mk +++ b/vcl/Library_vcl.mk @@ -311,6 +311,7 @@ $(eval $(call gb_Library_add_exception_objects,vcl,\ vcl/source/graphic/UnoGraphicTransformer \ vcl/source/bitmap/bitmap \ vcl/source/bitmap/bitmapfilter \ + vcl/source/bitmap/BitmapAlphaClampFilter \ vcl/source/bitmap/BitmapMonochromeFilter \ vcl/source/bitmap/BitmapSmoothenFilter \ vcl/source/bitmap/BitmapLightenFilter \ diff --git a/vcl/source/bitmap/BitmapAlphaClampFilter.cxx b/vcl/source/bitmap/BitmapAlphaClampFilter.cxx new file mode 100644 index 000000000000..5fd19235b6d1 --- /dev/null +++ b/vcl/source/bitmap/BitmapAlphaClampFilter.cxx @@ -0,0 +1,47 @@ +/* -*- 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/. + * + */ + +#include <vcl/bitmap.hxx> +#include <vcl/bitmapex.hxx> +#include <vcl/BitmapAlphaClampFilter.hxx> +#include <vcl/bitmapaccess.hxx> + +#include <bitmapwriteaccess.hxx> + +BitmapEx BitmapAlphaClampFilter::execute(BitmapEx const& rBitmapEx) +{ + if (!rBitmapEx.IsTransparent()) + return rBitmapEx; + + AlphaMask aBitmapAlpha(rBitmapEx.GetAlpha()); + { + AlphaScopedWriteAccess pWriteAlpha(aBitmapAlpha); + const Size aSize(rBitmapEx.GetSizePixel()); + + for (long nY = 0; nY < aSize.Height(); ++nY) + { + Scanline pScanAlpha = pWriteAlpha->GetScanline(nY); + + for (long nX = 0; nX < aSize.Width(); ++nX) + { + BitmapColor aBitmapAlphaValue(pWriteAlpha->GetPixelFromData(pScanAlpha, nX)); + if (aBitmapAlphaValue.GetIndex() > mcThreshold) + { + aBitmapAlphaValue.SetIndex(255); + pWriteAlpha->SetPixelOnData(pScanAlpha, nX, aBitmapAlphaValue); + } + } + } + } + + return BitmapEx(rBitmapEx.GetBitmap(), aBitmapAlpha); +} + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |