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/*
* This file is part of the KDE project
*
* Copyright (c) 2005 Bart Coppens <[email protected]>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#include <cmath>
#include <tqapplication.h>
#include <kdebug.h>
#include <kis_doc.h>
#include <kis_global.h>
#include <kis_types.h>
#include <kis_view.h>
#include "kis_imagerasteredcache.h"
KisImageRasteredCache::KisImageRasteredCache(KisView* view, Observer* o)
: m_observer(o->createNew(0, 0, 0, 0)), m_view(view)
{
m_busy = false;
m_imageProjection = 0;
m_rasterSize = 64*4;
m_timeOutMSec = 1000;
KisImageSP img = view->canvasSubject()->currentImg();
if (!img) {
return;
}
imageSizeChanged(img->width(), img->height());
connect(img, TQT_SIGNAL(sigImageUpdated(TQRect)),
this, TQT_SLOT(imageUpdated(TQRect)));
connect(img, TQT_SIGNAL(sigSizeChanged(TQ_INT32, TQ_INT32)),
this, TQT_SLOT(imageSizeChanged(TQ_INT32, TQ_INT32)));
connect(&m_timer, TQT_SIGNAL(timeout()), this, TQT_SLOT(timeOut()));
}
KisImageRasteredCache::~KisImageRasteredCache() {
cleanUpElements();
}
void KisImageRasteredCache::imageUpdated(TQRect rc) {
if (rc.isValid()) {
TQRect r(0, 0, m_width * m_rasterSize, m_height * m_rasterSize);
r &= rc;
uint x = static_cast<int>(r.x() / m_rasterSize);
uint y = static_cast<int>(r.y() / m_rasterSize);
uint x2 = static_cast<int>(ceil(float(r.x() + r.width()) / float(m_rasterSize)));
uint y2 = static_cast<int>(ceil(float(r.y() + r.height()) / float(m_rasterSize)));
if (!m_raster.empty()) {
for ( ; x < x2; x++) {
for (uint i = y; i < y2; i++) {
if (x < m_raster.size()) {
if (i < m_raster.at(x).size()) {
Element* e = m_raster.at(x).at(i);
if (e && e->valid) {
e->valid = false;
m_queue.push_back(e);
}
}
}
}
}
}
}
if (!m_busy) {
// If the timer is already started, this resets it. That way, we update always
// m_timeOutMSec milliseconds after the lastly monitored activity
m_timer.start(m_timeOutMSec, true); // true->singleshot
}
}
void KisImageRasteredCache::imageSizeChanged(TQ_INT32 w, TQ_INT32 h) {
KisImageSP image = m_view->canvasSubject()->currentImg();
cleanUpElements();
m_busy = false;
m_width = static_cast<int>(ceil(float(w) / float(m_rasterSize)));
m_height = static_cast<int>(ceil(float(h) / float(m_rasterSize)));
m_raster.resize(m_width);
int rasterX = 0;
for (int i = 0; i < m_width * m_rasterSize; i += m_rasterSize) {
int rasterY = 0;
m_raster.at(rasterX).resize(m_height + 1);
for (int j = 0; j < m_height * m_rasterSize; j += m_rasterSize) {
Element* e = new Element(m_observer->createNew(i, j, m_rasterSize, m_rasterSize));
m_raster.at(rasterX).at(rasterY) = e;
rasterY++;
}
rasterX++;
}
imageUpdated(TQRect(0,0, image->width(), image->height()));
}
void KisImageRasteredCache::timeOut() {
m_busy = true;
KisImageSP img = m_view->canvasSubject()->currentImg();
// Temporary cache: while we are busy, we won't get the mergeImage time and again.
if (!m_imageProjection)
m_imageProjection = img->mergedImage();
// Pick one element of the cache, and update it
if (!m_queue.isEmpty()) {
m_queue.front()->observer->regionUpdated(m_imageProjection);
m_queue.front()->valid = true;
m_queue.pop_front();
}
// If there are still elements, we need to be called again (this emulates processEvents)
if (!m_queue.isEmpty()) {
TQTimer::singleShot(0, this, TQT_SLOT(timeOut()));
} else {
emit cacheUpdated();
m_imageProjection = 0;
m_busy = false;
}
}
void KisImageRasteredCache::cleanUpElements() {
for (uint i = 0; i < m_raster.count(); i++) {
for (uint j = 0; j < m_raster.at(i).count(); j++) {
delete m_raster.at(i).at(j);
}
m_raster.at(i).clear();
}
m_raster.clear();
m_queue.clear();
}
#include "kis_imagerasteredcache.moc"
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