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272 lines
7.0 KiB
272 lines
7.0 KiB
/* -*- c-basic-offset: 4 indent-tabs-mode: nil -*- vi:set ts=8 sts=4 sw=4: */
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/*
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Rosegarden
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A MIDI and audio sequencer and musical notation editor.
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This program is Copyright 2000-2008
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Guillaume Laurent <glaurent@telegraph-road.org>,
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Chris Cannam <cannam@all-day-breakfast.com>,
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Richard Bown <richard.bown@ferventsoftware.com>
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The moral rights of Guillaume Laurent, Chris Cannam, and Richard
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Bown to claim authorship of this work have been asserted.
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Other copyrights also apply to some parts of this work. Please
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see the AUTHORS file and individual file headers for details.
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version. See the file
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COPYING included with this distribution for more information.
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*/
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#include "PixmapFunctions.h"
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#include <tqbitmap.h>
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#include <tqcolor.h>
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#include <tqimage.h>
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#include <tqpainter.h>
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#include <tqpixmap.h>
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#include <iostream>
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namespace Rosegarden
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{
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TQBitmap
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PixmapFunctions::generateMask(const TQPixmap &map, const TQRgb &px)
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{
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TQImage i(map.convertToImage());
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TQImage im(i.width(), i.height(), 1, 2, TQImage::LittleEndian);
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for (int y = 0; y < i.height(); ++y) {
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for (int x = 0; x < i.width(); ++x) {
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if (i.pixel(x, y) != px) {
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im.setPixel(x, y, 1);
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} else {
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im.setPixel(x, y, 0);
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}
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}
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}
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TQBitmap m;
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m.convertFromImage(im);
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return m;
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}
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TQBitmap
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PixmapFunctions::generateMask(const TQPixmap &map)
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{
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TQImage i(map.convertToImage());
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TQImage im(i.width(), i.height(), 1, 2, TQImage::LittleEndian);
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TQRgb px0(i.pixel(0, 0));
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TQRgb px1(i.pixel(i.width() - 1, 0));
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TQRgb px2(i.pixel(i.width() - 1, i.height() - 1));
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TQRgb px3(i.pixel(0, i.height() - 1));
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TQRgb px(px0);
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if (px0 != px2 && px1 == px3)
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px = px1;
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for (int y = 0; y < i.height(); ++y) {
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for (int x = 0; x < i.width(); ++x) {
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if (i.pixel(x, y) != px) {
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im.setPixel(x, y, 1);
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} else {
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im.setPixel(x, y, 0);
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}
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}
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}
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TQBitmap m;
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m.convertFromImage(im);
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return m;
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}
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TQPixmap
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PixmapFunctions::colourPixmap(const TQPixmap &map, int hue, int minValue)
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{
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// assumes pixmap is currently in shades of grey; maps black ->
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// solid colour and greys -> shades of colour
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TQImage image = map.convertToImage();
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int s, v;
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bool warned = false;
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for (int y = 0; y < image.height(); ++y) {
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for (int x = 0; x < image.width(); ++x) {
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TQColor pixel(image.pixel(x, y));
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int oldHue;
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pixel.hsv(&oldHue, &s, &v);
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if (oldHue >= 0) {
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if (!warned) {
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std::cerr << "PixmapFunctions::recolour: Not a greyscale pixmap "
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<< "(found rgb value " << pixel.red() << ","
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<< pixel.green() << "," << pixel.blue()
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<< "), hoping for the best" << std::endl;
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warned = true;
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}
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}
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image.setPixel
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(x, y, TQColor(hue,
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255 - v,
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v > minValue ? v : minValue,
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TQColor::Hsv).rgb());
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}
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}
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TQPixmap rmap;
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rmap.convertFromImage(image);
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if (map.mask())
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rmap.setMask(*map.mask());
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return rmap;
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}
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TQPixmap
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PixmapFunctions::shadePixmap(const TQPixmap &map)
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{
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TQImage image = map.convertToImage();
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int h, s, v;
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for (int y = 0; y < image.height(); ++y) {
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for (int x = 0; x < image.width(); ++x) {
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TQColor pixel(image.pixel(x, y));
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pixel.hsv(&h, &s, &v);
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image.setPixel
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(x, y, TQColor(h,
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s,
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255 - ((255 - v) / 2),
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TQColor::Hsv).rgb());
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}
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}
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TQPixmap rmap;
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rmap.convertFromImage(image);
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if (map.mask())
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rmap.setMask(*map.mask());
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return rmap;
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}
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TQPixmap
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PixmapFunctions::flipVertical(const TQPixmap &map)
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{
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TQPixmap rmap;
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TQImage i(map.convertToImage());
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rmap.convertFromImage(i.mirror(false, true));
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if (map.mask()) {
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TQImage im(map.mask()->convertToImage());
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TQBitmap newMask;
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newMask.convertFromImage(im.mirror(false, true));
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rmap.setMask(newMask);
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}
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return rmap;
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}
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TQPixmap
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PixmapFunctions::flipHorizontal(const TQPixmap &map)
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{
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TQPixmap rmap;
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TQImage i(map.convertToImage());
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rmap.convertFromImage(i.mirror(true, false));
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if (map.mask()) {
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TQImage im(map.mask()->convertToImage());
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TQBitmap newMask;
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newMask.convertFromImage(im.mirror(true, false));
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rmap.setMask(newMask);
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}
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return rmap;
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}
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std::pair<TQPixmap, TQPixmap>
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PixmapFunctions::splitPixmap(const TQPixmap &pixmap, int x)
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{
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TQPixmap left(x, pixmap.height(), pixmap.depth());
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TQBitmap leftMask(left.width(), left.height());
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TQPixmap right(pixmap.width() - x, pixmap.height(), pixmap.depth());
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TQBitmap rightMask(right.width(), right.height());
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TQPainter paint;
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paint.begin(&left);
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paint.drawPixmap(0, 0, pixmap, 0, 0, left.width(), left.height());
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paint.end();
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paint.begin(&leftMask);
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paint.drawPixmap(0, 0, *pixmap.mask(), 0, 0, left.width(), left.height());
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paint.end();
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left.setMask(leftMask);
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paint.begin(&right);
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paint.drawPixmap(0, 0, pixmap, left.width(), 0, right.width(), right.height());
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paint.end();
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paint.begin(&rightMask);
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paint.drawPixmap(0, 0, *pixmap.mask(), left.width(), 0, right.width(), right.height());
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paint.end();
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right.setMask(rightMask);
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return std::pair<TQPixmap, TQPixmap>(left, right);
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}
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void
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PixmapFunctions::drawPixmapMasked(TQPixmap &dest, TQBitmap &destMask,
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int x0, int y0,
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const TQPixmap &src)
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{
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TQImage idp(dest.convertToImage());
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TQImage idm(destMask.convertToImage());
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TQImage isp(src.convertToImage());
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TQImage ism(src.mask()->convertToImage());
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for (int y = 0; y < isp.height(); ++y) {
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for (int x = 0; x < isp.width(); ++x) {
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if (x >= ism.width())
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continue;
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if (y >= ism.height())
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continue;
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if (ism.depth() == 1 && ism.pixel(x, y) == 0)
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continue;
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if (ism.pixel(x, y) == TQt::white.rgb())
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continue;
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int x1 = x + x0;
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int y1 = y + y0;
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if (x1 < 0 || x1 >= idp.width())
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continue;
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if (y1 < 0 || y1 >= idp.height())
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continue;
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idp.setPixel(x1, y1, isp.pixel(x, y));
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idm.setPixel(x1, y1, 1);
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}
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}
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dest.convertFromImage(idp);
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destMask.convertFromImage(idm);
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}
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}
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