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authorTomaž Vajngerl <tomaz.vajngerl@collabora.com>2015-10-07 13:12:14 +0200
committerTomaž Vajngerl <tomaz.vajngerl@collabora.com>2015-10-12 11:39:24 +0200
commit78a4e9cb89830191e77c558759e845e5a15b9cc7 (patch)
treebb6c78940731700fc3f5a47b114ee872cfaecd44 /vcl/source/bitmap/BitmapProcessor.cxx
parent09374b5acdec0743a1f860f70ccd15eda24fa399 (diff)
vcl: recolor images (icons) to be more visible in a dark theme
This adds recoloring of images/icons (suited for breeze and sifr) so they are more visible when a dark theme is used (for example gtk3 can switch to a dark theme). LO must be started with environment variable VCL_ICONS_FOR_DARK_THEME set to 1. open issues - currently all images/icons are recolored but not all images should get recolored. Change-Id: Ibc42e30af79bb4c4f04c67b760019311b97b2cc6
Diffstat (limited to 'vcl/source/bitmap/BitmapProcessor.cxx')
-rw-r--r--vcl/source/bitmap/BitmapProcessor.cxx58
1 files changed, 58 insertions, 0 deletions
diff --git a/vcl/source/bitmap/BitmapProcessor.cxx b/vcl/source/bitmap/BitmapProcessor.cxx
new file mode 100644
index 000000000000..e9d36ed53539
--- /dev/null
+++ b/vcl/source/bitmap/BitmapProcessor.cxx
@@ -0,0 +1,58 @@
+/* -*- 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/BitmapProcessor.hxx>
+#include <vcl/bmpacc.hxx>
+#include <basegfx/color/bcolortools.hxx>
+
+BitmapEx BitmapProcessor::createLightImage(const BitmapEx& rBitmapEx)
+{
+ const Size aSize(rBitmapEx.GetSizePixel());
+
+ Bitmap aBitmap(rBitmapEx.GetBitmap());
+ Bitmap aDarkBitmap(aSize, 24);
+
+ BitmapReadAccess* pRead(aBitmap.AcquireReadAccess());
+ BitmapWriteAccess* pWrite(aDarkBitmap.AcquireWriteAccess());
+
+ if (pRead && pWrite)
+ {
+ for (int nY = 0; nY < aSize.Height(); ++nY)
+ {
+ for (int nX = 0; nX < aSize.Width(); ++nX)
+ {
+ BitmapColor aColor = pRead->HasPalette() ?
+ pRead->GetPaletteColor(pRead->GetPixelIndex(nY, nX)) :
+ pRead->GetPixel(nY, nX);
+ basegfx::BColor aBColor(Color(aColor.Invert()).getBColor());
+ aBColor = basegfx::tools::rgb2hsl(aBColor);
+
+ double fHue = aBColor.getRed();
+ fHue += 180.0;
+ while (fHue > 360.0)
+ fHue -= 360.0;
+ aBColor.setRed(fHue);
+
+ aBColor = basegfx::tools::hsl2rgb(aBColor);
+ aColor.SetRed(((aBColor.getRed() * 255.0) + 0.5));
+ aColor.SetGreen(((aBColor.getGreen() * 255.0) + 0.5));
+ aColor.SetBlue(((aBColor.getBlue() * 255.0) + 0.5));
+
+ pWrite->SetPixel(nY, nX, aColor);
+ }
+ }
+ }
+ Bitmap::ReleaseAccess(pWrite);
+ Bitmap::ReleaseAccess(pRead);
+
+ return BitmapEx(aDarkBitmap, rBitmapEx.GetAlpha());
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */