You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
363 lines
9.7 KiB
363 lines
9.7 KiB
|
|
/*
|
|
Copyright (c) 2003,2004,2005 Clarence Dang <dang@kde.org>
|
|
All rights reserved.
|
|
|
|
Redistribution and use in source and binary forms, with or without
|
|
modification, are permitted provided that the following conditions
|
|
are met:
|
|
|
|
1. Redistributions of source code must retain the above copyright
|
|
notice, this list of conditions and the following disclaimer.
|
|
2. Redistributions in binary form must reproduce the above copyright
|
|
notice, this list of conditions and the following disclaimer in the
|
|
documentation and/or other materials provided with the distribution.
|
|
|
|
THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
|
|
IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
|
|
OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
|
|
IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
|
|
INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
|
|
NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|
DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|
THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
|
|
THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*/
|
|
|
|
|
|
#define DEBUG_KP_FLOOD_FILL 0
|
|
|
|
|
|
#include <kpfloodfill.h>
|
|
|
|
#include <tqapplication.h>
|
|
#include <tqbitmap.h>
|
|
#include <tqpainter.h>
|
|
#include <tqpixmap.h>
|
|
|
|
#include <kdebug.h>
|
|
#include <kpdefs.h>
|
|
|
|
#include <kppixmapfx.h>
|
|
#include <kptool.h>
|
|
|
|
|
|
kpFloodFill::kpFloodFill (TQPixmap *pixmap, int x, int y,
|
|
const kpColor &color, int processedColorSimilarity)
|
|
: m_pixmapPtr (pixmap), m_x (x), m_y (y),
|
|
m_color (color), m_processedColorSimilarity (processedColorSimilarity),
|
|
m_initState (0)
|
|
{
|
|
}
|
|
|
|
kpFloodFill::~kpFloodFill ()
|
|
{
|
|
}
|
|
|
|
|
|
// private
|
|
int kpFloodFill::fillLinesListSize (const TQValueList <kpFloodFill::FillLine> &fillLines) const
|
|
{
|
|
return (fillLines.size () * kpFloodFill::FillLine::size ());
|
|
}
|
|
|
|
// public
|
|
int kpFloodFill::size () const
|
|
{
|
|
int fillLinesCacheSize = 0;
|
|
for (TQValueVector < TQValueList <kpFloodFill::FillLine > >::const_iterator it = m_fillLinesCache.begin ();
|
|
it != m_fillLinesCache.end ();
|
|
it++)
|
|
{
|
|
fillLinesCacheSize += fillLinesListSize (*it);
|
|
}
|
|
|
|
return fillLinesListSize (m_fillLines) +
|
|
kpPixmapFX::imageSize (m_image) +
|
|
fillLinesCacheSize;
|
|
}
|
|
|
|
|
|
TQRect kpFloodFill::boundingRect () const
|
|
{
|
|
return m_boundingRect;
|
|
}
|
|
|
|
bool kpFloodFill::fill ()
|
|
{
|
|
if (m_initState < 2 && !prepare ())
|
|
{
|
|
kdError () << "kpFloodFill:fill() could not prepare()!" << endl;
|
|
return false;
|
|
}
|
|
|
|
// not trying to do a NOP fill
|
|
if (m_boundingRect.isValid ())
|
|
{
|
|
TQApplication::setOverrideCursor (TQt::waitCursor);
|
|
|
|
TQPainter painter, maskPainter;
|
|
TQBitmap maskBitmap;
|
|
|
|
if (m_pixmapPtr->mask () || m_color.isTransparent ())
|
|
{
|
|
maskBitmap = kpPixmapFX::getNonNullMask (*m_pixmapPtr);
|
|
maskPainter.begin (&maskBitmap);
|
|
maskPainter.setPen (m_color.maskColor ());
|
|
}
|
|
|
|
if (m_color.isOpaque ())
|
|
{
|
|
painter.begin (m_pixmapPtr);
|
|
painter.setPen (m_color.toTQColor ());
|
|
}
|
|
|
|
const TQValueList <FillLine>::ConstIterator fillLinesEnd = m_fillLines.end ();
|
|
for (TQValueList <FillLine>::ConstIterator it = m_fillLines.begin ();
|
|
it != fillLinesEnd;
|
|
it++)
|
|
{
|
|
TQPoint p1 = TQPoint ((*it).m_x1, (*it).m_y);
|
|
TQPoint p2 = TQPoint ((*it).m_x2, (*it).m_y);
|
|
|
|
if (painter.isActive ())
|
|
painter.drawLine (p1, p2);
|
|
|
|
if (maskPainter.isActive ())
|
|
maskPainter.drawLine (p1, p2);
|
|
}
|
|
|
|
if (painter.isActive ())
|
|
painter.end ();
|
|
|
|
if (maskPainter.isActive ())
|
|
maskPainter.end ();
|
|
|
|
if (!maskBitmap.isNull ())
|
|
m_pixmapPtr->setMask (maskBitmap);
|
|
|
|
TQApplication::restoreOverrideCursor ();
|
|
}
|
|
else
|
|
{
|
|
#if DEBUG_KP_FLOOD_FILL && 1
|
|
kdDebug () << "kpFloodFill::fill() performing NOP fill" << endl;
|
|
#endif
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
bool kpFloodFill::prepareColorToChange ()
|
|
{
|
|
#if DEBUG_KP_FLOOD_FILL && 1
|
|
kdDebug () << "kpFloodFill::prepareColorToChange" << endl;
|
|
#endif
|
|
|
|
m_colorToChange = kpPixmapFX::getColorAtPixel (*m_pixmapPtr, TQPoint (m_x, m_y));
|
|
|
|
if (m_colorToChange.isOpaque ())
|
|
{
|
|
#if DEBUG_KP_FLOOD_FILL && 1
|
|
kdDebug () << "\tcolorToChange: r=" << m_colorToChange.red ()
|
|
<< ", b=" << m_colorToChange.blue ()
|
|
<< ", g=" << m_colorToChange.green ()
|
|
<< endl;
|
|
#endif
|
|
}
|
|
else
|
|
{
|
|
#if DEBUG_KP_FLOOD_FILL && 1
|
|
kdDebug () << "\tcolorToChange: transparent" << endl;
|
|
#endif
|
|
}
|
|
|
|
m_initState = 1;
|
|
return true;
|
|
}
|
|
|
|
// Derived from the zSprite2 Graphics Engine
|
|
|
|
bool kpFloodFill::prepare ()
|
|
{
|
|
#if DEBUG_KP_FLOOD_FILL && 1
|
|
kdDebug () << "kpFloodFill::prepare()" << endl;
|
|
#endif
|
|
m_boundingRect = TQRect ();
|
|
|
|
if (m_initState < 1 && !prepareColorToChange ())
|
|
{
|
|
kdError () << "kpFloodFill:prepare() could not prepareColorToChange()!" << endl;
|
|
return false;
|
|
}
|
|
|
|
#if DEBUG_KP_FLOOD_FILL && 1
|
|
kdDebug () << "\tperforming NOP check" << endl;
|
|
#endif
|
|
|
|
// get the color we need to replace
|
|
if (m_processedColorSimilarity == 0 && m_color == m_colorToChange)
|
|
{
|
|
// need to do absolutely nothing (this is a significant optimisation
|
|
// for people who randomly click a lot over already-filled areas)
|
|
m_initState = 2; // sync with all "return true"'s
|
|
return true;
|
|
}
|
|
|
|
#if DEBUG_KP_FLOOD_FILL && 1
|
|
kdDebug () << "\tconverting to image" << endl;
|
|
#endif
|
|
|
|
// is this the only way to read pixels?
|
|
m_image = kpPixmapFX::convertToImage (*m_pixmapPtr);
|
|
if (m_image.isNull ())
|
|
{
|
|
kdError () << "kpFloodFill::prepare() could not convert to TQImage" << endl;
|
|
return false;
|
|
}
|
|
|
|
#if DEBUG_KP_FLOOD_FILL && 1
|
|
kdDebug () << "\tcreating fillLinesCache" << endl;
|
|
#endif
|
|
|
|
// ready cache
|
|
m_fillLinesCache.resize (m_pixmapPtr->height ());
|
|
|
|
#if DEBUG_KP_FLOOD_FILL && 1
|
|
kdDebug () << "\tcreating fill lines" << endl;
|
|
#endif
|
|
|
|
// draw initial line
|
|
addLine (m_y, findMinX (m_y, m_x), findMaxX (m_y, m_x));
|
|
|
|
for (TQValueList <FillLine>::ConstIterator it = m_fillLines.begin ();
|
|
it != m_fillLines.end ();
|
|
it++)
|
|
{
|
|
#if DEBUG_KP_FLOOD_FILL && 0
|
|
kdDebug () << "Expanding from y=" << (*it).m_y
|
|
<< " x1=" << (*it).m_x1
|
|
<< " x2=" << (*it).m_x2
|
|
<< endl;
|
|
#endif
|
|
|
|
// make more lines above and below current line
|
|
findAndAddLines (*it, -1);
|
|
findAndAddLines (*it, +1);
|
|
}
|
|
|
|
#if DEBUG_KP_FLOOD_FILL && 1
|
|
kdDebug () << "\tfinalising memory usage" << endl;
|
|
#endif
|
|
|
|
// finalize memory usage
|
|
m_image.reset ();
|
|
m_fillLinesCache.clear ();
|
|
|
|
m_initState = 2; // sync with all "return true"'s
|
|
return true;
|
|
}
|
|
|
|
void kpFloodFill::addLine (int y, int x1, int x2)
|
|
{
|
|
#if DEBUG_KP_FLOOD_FILL && 0
|
|
kdDebug () << "kpFillCommand::fillAddLine (" << y << "," << x1 << "," << x2 << ")" << endl;
|
|
#endif
|
|
|
|
m_fillLines.append (FillLine (y, x1, x2));
|
|
m_fillLinesCache [y].append (FillLine (y /* OPT */, x1, x2));
|
|
m_boundingRect = m_boundingRect.unite (TQRect (TQPoint (x1, y), TQPoint (x2, y)));
|
|
}
|
|
|
|
kpColor kpFloodFill::pixelColor (int x, int y, bool *beenHere) const
|
|
{
|
|
if (beenHere)
|
|
*beenHere = false;
|
|
|
|
if (y >= (int) m_fillLinesCache.count ())
|
|
{
|
|
kdError () << "kpFloodFill::pixelColor("
|
|
<< x << ","
|
|
<< y << ") y out of range=" << m_pixmapPtr->height () << endl;
|
|
return kpColor::invalid;
|
|
}
|
|
|
|
const TQValueList <FillLine>::ConstIterator theEnd = m_fillLinesCache [y].end ();
|
|
for (TQValueList <FillLine>::ConstIterator it = m_fillLinesCache [y].begin ();
|
|
it != theEnd;
|
|
it++)
|
|
{
|
|
if (x >= (*it).m_x1 && x <= (*it).m_x2)
|
|
{
|
|
if (beenHere)
|
|
*beenHere = true;
|
|
return m_color;
|
|
}
|
|
}
|
|
|
|
return kpPixmapFX::getColorAtPixel (m_image, TQPoint (x, y));
|
|
}
|
|
|
|
bool kpFloodFill::shouldGoTo (int x, int y) const
|
|
{
|
|
bool beenThere;
|
|
const kpColor col = pixelColor (x, y, &beenThere);
|
|
|
|
return (!beenThere && col.isSimilarTo (m_colorToChange, m_processedColorSimilarity));
|
|
}
|
|
|
|
void kpFloodFill::findAndAddLines (const FillLine &fillLine, int dy)
|
|
{
|
|
// out of bounds?
|
|
if (fillLine.m_y + dy < 0 || fillLine.m_y + dy >= m_pixmapPtr->height ())
|
|
return;
|
|
|
|
for (int xnow = fillLine.m_x1; xnow <= fillLine.m_x2; xnow++)
|
|
{
|
|
// At current position, right colour?
|
|
if (shouldGoTo (xnow, fillLine.m_y + dy))
|
|
{
|
|
// Find minimum and maximum x values
|
|
int minxnow = findMinX (fillLine.m_y + dy, xnow);
|
|
int maxxnow = findMaxX (fillLine.m_y + dy, xnow);
|
|
|
|
// Draw line
|
|
addLine (fillLine.m_y + dy, minxnow, maxxnow);
|
|
|
|
// Move x pointer
|
|
xnow = maxxnow;
|
|
}
|
|
}
|
|
}
|
|
|
|
// finds the minimum x value at a certain line to be filled
|
|
int kpFloodFill::findMinX (int y, int x) const
|
|
{
|
|
for (;;)
|
|
{
|
|
if (x < 0)
|
|
return 0;
|
|
|
|
if (shouldGoTo (x, y))
|
|
x--;
|
|
else
|
|
return x + 1;
|
|
}
|
|
}
|
|
|
|
// finds the maximum x value at a certain line to be filled
|
|
int kpFloodFill::findMaxX (int y, int x) const
|
|
{
|
|
for (;;)
|
|
{
|
|
if (x > m_pixmapPtr->width () - 1)
|
|
return m_pixmapPtr->width () - 1;
|
|
|
|
if (shouldGoTo (x, y))
|
|
x++;
|
|
else
|
|
return x - 1;
|
|
}
|
|
}
|