From bd6336c629841c6db3a6ca53a936d629d34db53b Mon Sep 17 00:00:00 2001 From: Daniel Wilhelm Date: Fri, 18 Apr 2014 17:15:16 +0200 Subject: 4.1 --- shared/image_tools.h | 157 --------------------------------------------------- 1 file changed, 157 deletions(-) delete mode 100644 shared/image_tools.h (limited to 'shared/image_tools.h') diff --git a/shared/image_tools.h b/shared/image_tools.h deleted file mode 100644 index e78e7ced..00000000 --- a/shared/image_tools.h +++ /dev/null @@ -1,157 +0,0 @@ -// ************************************************************************** -// * This file is part of the FreeFileSync project. It is distributed under * -// * GNU General Public License: http://www.gnu.org/licenses/gpl.html * -// * Copyright (C) 2008-2011 ZenJu (zhnmju123 AT gmx.de) * -// ************************************************************************** - -#ifndef IMAGE_TOOLS_HEADER_45782456427634254 -#define IMAGE_TOOLS_HEADER_45782456427634254 - -#include -#include -#include - - -namespace zen -{ -wxBitmap greyScale(const wxBitmap& bmp); //greyscale + brightness adaption -wxBitmap layOver(const wxBitmap& foreground, const wxBitmap& background); //merge - -void move(wxImage& img, int up, int left = 0); -void adjustBrightness(wxImage& img, int targetLevel); -double getAvgBrightness(const wxImage& img); //in [0, 255] -void brighten(wxImage& img, int level); //level: delta per channel in points - -bool isEqual(const wxBitmap& lhs, const wxBitmap& rhs); //pixel-wise equality (respecting alpha channel) - - - - - - - - - - - - - - - - - -//################################### implementation ################################### -inline -void move(wxImage& img, int up, int left) -{ - img = img.GetSubImage(wxRect(std::max(0, left), std::max(0, up), img.GetWidth() - abs(left), img.GetHeight() - abs(up))); - img.Resize(wxSize(img.GetWidth() + abs(left), img.GetHeight() + abs(up)), wxPoint(-std::min(0, left), -std::min(0, up))); -} - - -inline -wxBitmap greyScale(const wxBitmap& bmp) -{ - wxImage output = bmp.ConvertToImage().ConvertToGreyscale(1.0/3, 1.0/3, 1.0/3); //treat all channels equally! - //wxImage output = bmp.ConvertToImage().ConvertToGreyscale(); - adjustBrightness(output, 170); - return output; -} - - -inline -double getAvgBrightness(const wxImage& img) -{ - const int pixelCount = img.GetWidth() * img.GetHeight(); - auto pixBegin = img.GetData(); - if (pixBegin) - { - auto pixEnd = pixBegin + 3 * pixelCount; //RGB - - if (img.HasAlpha()) - { - const unsigned char* alphaFirst = img.GetAlpha(); - - //calculate average weighted by alpha channel - double dividend = 0; - for (auto iter = pixBegin; iter != pixEnd; ++iter) - dividend += *iter * static_cast(alphaFirst[(iter - pixBegin) / 3]); - - const int divisor = 3.0 * std::accumulate(alphaFirst, alphaFirst + pixelCount, 0.0); - - return dividend / divisor; - } - else - return std::accumulate(pixBegin, pixEnd, 0.0) / (3.0 * pixelCount); - } - return 0; -} - - -inline -void brighten(wxImage& img, int level) -{ - const int pixelCount = img.GetWidth() * img.GetHeight(); - auto pixBegin = img.GetData(); - if (pixBegin) - { - auto pixEnd = pixBegin + 3 * pixelCount; //RGB - if (level > 0) - std::for_each(pixBegin, pixEnd, [&](unsigned char& c) { c = std::min(255, c + level); }); - else - std::for_each(pixBegin, pixEnd, [&](unsigned char& c) { c = std::max(0, c + level); }); - } -} - - -inline -void adjustBrightness(wxImage& img, int targetLevel) -{ - brighten(img, targetLevel - getAvgBrightness(img)); -} - - -inline -wxBitmap layOver(const wxBitmap& foreground, const wxBitmap& background) -{ - wxBitmap output = background; - { - wxMemoryDC dc; - dc.SelectObject(output); - dc.DrawBitmap(foreground, 0, 0, true); - dc.SelectObject(wxNullBitmap); - } - return output; -} - - -inline -bool isEqual(const wxBitmap& lhs, const wxBitmap& rhs) -{ - if (lhs.IsOk() != rhs.IsOk()) - return false; - if (!lhs.IsOk()) - return true; - - const int pixelCount = lhs.GetWidth() * lhs.GetHeight(); - if (pixelCount != rhs.GetWidth() * rhs.GetHeight()) - return false; - - wxImage imLhs = lhs.ConvertToImage(); - wxImage imRhs = rhs.ConvertToImage(); - - if (imLhs.HasAlpha() != imRhs.HasAlpha()) - return false; - - if (imLhs.HasAlpha()) - { - if (!std::equal(imLhs.GetAlpha(), imLhs.GetAlpha() + pixelCount, imRhs.GetAlpha())) - return false; - } - - return std::equal(imLhs.GetData(), imLhs.GetData() + pixelCount * 3, imRhs.GetData()); -} -} - - -#endif //IMAGE_TOOLS_HEADER_45782456427634254 -- cgit