78 lines
2.1 KiB
C++
78 lines
2.1 KiB
C++
/*
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* This file is part of RawTherapee.
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*
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* Copyright (c) 2004-2010 Gabor Horvath <hgabor@rawtherapee.com>
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*
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* RawTherapee is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* RawTherapee is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with RawTherapee. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef _ALPHA_H_
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#define _ALPHA_H_
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#include <gtkmm.h>
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#include <assert.h>
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#define CHECK_BOUNDS 0
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namespace rtengine
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{
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/// Alpha channel class (8 bits)
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class Alpha
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{
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protected:
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Cairo::RefPtr<Cairo::ImageSurface> surface;
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public:
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Alpha ();
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Alpha (int width, int height);
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//~Alpha ();
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void setSize(int width, int height);
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int getWidth();
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int getHeight();
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const Cairo::RefPtr<Cairo::ImageSurface> getSurface ();
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// TODO: to make the editing faster, we should add an iterator class
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// Will send back the start of a row
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unsigned char* operator () (unsigned row) const;
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// Will send back a value at a given row, col position
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unsigned char& operator () (unsigned row, unsigned col);
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const unsigned char operator () (unsigned row, unsigned col) const;
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};
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inline const Cairo::RefPtr<Cairo::ImageSurface> Alpha::getSurface () {
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return surface; // to be used in bitmap edition
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}
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inline const unsigned char Alpha::operator () (unsigned row,
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unsigned col) const {
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return *(surface->get_data () + row * surface->get_width () + col);
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}
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inline unsigned char& Alpha::operator () (unsigned row, unsigned col) {
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return *(surface->get_data () + row * surface->get_width () + col);
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}
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inline unsigned char* Alpha::operator () (unsigned row) const {
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return surface->get_data () + row * surface->get_width ();
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}
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}
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#endif
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