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koffice/chalk/core/kis_pattern.cc

336 lines
9.2 KiB

/*
* kis_pattern.cc - part of Krayon
*
* Copyright (c) 2000 Matthias Elter <elter@kde.org>
* 2001 John Califf
* 2004 Boudewijn Rempt <boud@valdyas.org>
*
* 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 "kis_pattern.h"
#include <sys/types.h>
#include <netinet/in.h>
#include <limits.h>
#include <stdlib.h>
#include <tqpoint.h>
#include <tqsize.h>
#include <tqimage.h>
#include <tqvaluevector.h>
#include <tqmap.h>
#include <tqfile.h>
#include <kdebug.h>
#include <klocale.h>
#include "kis_color.h"
#include "kis_layer.h"
#include "kis_paint_device.h"
namespace {
struct GimpPatternHeader {
TQ_UINT32 header_size; /* header_size = sizeof (PatternHeader) + brush name */
TQ_UINT32 version; /* pattern file version # */
TQ_UINT32 width; /* width of pattern */
TQ_UINT32 height; /* height of pattern */
TQ_UINT32 bytes; /* depth of pattern in bytes : 1, 2, 3 or 4*/
TQ_UINT32 magic_number; /* GIMP brush magic number */
};
// Yes! This is _NOT_ what my pat.txt file says. It's really not 'GIMP', but 'GPAT'
TQ_UINT32 const GimpPatternMagic = (('G' << 24) + ('P' << 16) + ('A' << 8) + ('T' << 0));
}
KisPattern::KisPattern(const TQString& file) : super(file), m_hasFile(true)
{
}
KisPattern::KisPattern(KisPaintDevice* image, int x, int y, int w, int h)
: super(""), m_hasFile(false)
{
// Forcefully convert to RGBA8
// XXX profile and exposure?
setImage(image->convertToTQImage(0, x, y, w, h));
setName(image->name());
}
KisPattern::~KisPattern()
{
}
bool KisPattern::load()
{
if (!m_hasFile)
return true;
TQFile file(filename());
file.open(IO_ReadOnly);
TQByteArray data = file.readAll();
if (!data.isEmpty()) {
TQ_INT32 startPos = m_data.size();
m_data.resize(m_data.size() + data.count());
memcpy(&m_data[startPos], data.data(), data.count());
}
file.close();
return init();
}
bool KisPattern::save()
{
TQFile file(filename());
file.open(IO_WriteOnly | IO_Truncate);
TQTextStream stream(&file);
// Header: header_size (24+name length),version,width,height,colourdepth of brush,magic,name
// depth: 1 = greyscale, 2 = greyscale + A, 3 = RGB, 4 = RGBA
// magic = "GPAT", as a single uint32, the docs are wrong here!
// name is UTF-8 (\0-terminated! The docs say nothing about this!)
// _All_ data in network order, it seems! (not mentioned in gimp-2.2.8/devel-docs/pat.txt!!)
// We only save RGBA at the moment
// Version is 1 for now...
GimpPatternHeader ph;
TQCString utf8Name = name().utf8();
char const* name = utf8Name.data();
int nameLength = tqstrlen(name);
ph.header_size = htonl(sizeof(GimpPatternHeader) + nameLength + 1); // trailing 0
ph.version = htonl(1);
ph.width = htonl(width());
ph.height = htonl(height());
ph.bytes = htonl(4);
ph.magic_number = htonl(GimpPatternMagic);
TQByteArray bytes;
bytes.setRawData(reinterpret_cast<char*>(&ph), sizeof(GimpPatternHeader));
int wrote = file.writeBlock(bytes);
bytes.resetRawData(reinterpret_cast<char*>(&ph), sizeof(GimpPatternHeader));
if (wrote == -1)
return false;
wrote = file.writeBlock(name, nameLength + 1); // Trailing 0 apparantly!
if (wrote == -1)
return false;
int k = 0;
bytes.resize(width() * height() * 4);
for (TQ_INT32 y = 0; y < height(); y++) {
for (TQ_INT32 x = 0; x < width(); x++) {
// RGBA only
TQRgb pixel = m_img.pixel(x,y);
bytes[k++] = static_cast<char>(tqRed(pixel));
bytes[k++] = static_cast<char>(tqGreen(pixel));
bytes[k++] = static_cast<char>(tqBlue(pixel));
bytes[k++] = static_cast<char>(tqAlpha(pixel));
}
}
wrote = file.writeBlock(bytes);
if (wrote == -1)
return false;
file.close();
return true;
}
TQImage KisPattern::img()
{
return m_img;
}
bool KisPattern::init()
{
// load Gimp patterns
GimpPatternHeader bh;
TQ_INT32 k;
TQValueVector<char> name;
if (sizeof(GimpPatternHeader) > m_data.size()) {
return false;
}
memcpy(&bh, &m_data[0], sizeof(GimpPatternHeader));
bh.header_size = ntohl(bh.header_size);
bh.version = ntohl(bh.version);
bh.width = ntohl(bh.width);
bh.height = ntohl(bh.height);
bh.bytes = ntohl(bh.bytes);
bh.magic_number = ntohl(bh.magic_number);
if (bh.header_size > m_data.size() || bh.header_size == 0) {
return false;
}
name.resize(bh.header_size - sizeof(GimpPatternHeader));
memcpy(&name[0], &m_data[sizeof(GimpPatternHeader)], name.size());
if (name[name.size() - 1]) {
return false;
}
setName(i18n(&name[0]));
if (bh.width == 0 || bh.height == 0 || !m_img.create(bh.width, bh.height, 32)) {
return false;
}
k = bh.header_size;
if (bh.bytes == 1) {
// Grayscale
TQ_INT32 val;
for (TQ_UINT32 y = 0; y < bh.height; y++) {
for (TQ_UINT32 x = 0; x < bh.width; x++, k++) {
if (static_cast<TQ_UINT32>(k) > m_data.size()) {
kdDebug(DBG_AREA_FILE) << "failed in gray\n";
return false;
}
val = m_data[k];
m_img.setPixel(x, y, tqRgb(val, val, val));
m_img.setAlphaBuffer(false);
}
}
} else if (bh.bytes == 2) {
// Grayscale + A
TQ_INT32 val;
TQ_INT32 alpha;
for (TQ_UINT32 y = 0; y < bh.height; y++) {
for (TQ_UINT32 x = 0; x < bh.width; x++, k++) {
if (static_cast<TQ_UINT32>(k + 2) > m_data.size()) {
kdDebug(DBG_AREA_FILE) << "failed in grayA\n";
return false;
}
val = m_data[k];
alpha = m_data[k++];
m_img.setPixel(x, y, tqRgba(val, val, val, alpha));
m_img.setAlphaBuffer(true);
}
}
} else if (bh.bytes == 3) {
// RGB without alpha
for (TQ_UINT32 y = 0; y < bh.height; y++) {
for (TQ_UINT32 x = 0; x < bh.width; x++) {
if (static_cast<TQ_UINT32>(k + 3) > m_data.size()) {
kdDebug(DBG_AREA_FILE) << "failed in RGB\n";
return false;
}
m_img.setPixel(x, y, tqRgb(m_data[k],
m_data[k + 1],
m_data[k + 2]));
k += 3;
m_img.setAlphaBuffer(false);
}
}
} else if (bh.bytes == 4) {
// Has alpha
for (TQ_UINT32 y = 0; y < bh.height; y++) {
for (TQ_UINT32 x = 0; x < bh.width; x++) {
if (static_cast<TQ_UINT32>(k + 4) > m_data.size()) {
kdDebug(DBG_AREA_FILE) << "failed in RGBA\n";
return false;
}
m_img.setPixel(x, y, tqRgba(m_data[k],
m_data[k + 1],
m_data[k + 2],
m_data[k + 3]));
k += 4;
m_img.setAlphaBuffer(true);
}
}
} else {
return false;
}
if (m_img.isNull()) {
return false;
}
setWidth(m_img.width());
setHeight(m_img.height());
setValid(true);
return true;
}
KisPaintDeviceSP KisPattern::image(KisColorSpace * colorSpace) {
// Check if there's already a pattern prepared for this colorspace
TQMap<TQString, KisPaintDeviceSP>::const_iterator it = m_colorspaces.find(colorSpace->id().id());
if (it != m_colorspaces.end())
return (*it);
// If not, create one
KisPaintDeviceSP layer = new KisPaintDevice(colorSpace, "pattern");
Q_CHECK_PTR(layer);
layer->convertFromTQImage(m_img,"");
m_colorspaces[colorSpace->id().id()] = layer;
return layer;
}
TQ_INT32 KisPattern::width() const
{
return m_width;
}
void KisPattern::setWidth(TQ_INT32 w)
{
m_width = w;
}
TQ_INT32 KisPattern::height() const
{
return m_height;
}
void KisPattern::setHeight(TQ_INT32 h)
{
m_height = h;
}
void KisPattern::setImage(const TQImage& img)
{
m_hasFile = false;
m_img = img;
m_img.detach();
setWidth(img.width());
setHeight(img.height());
setValid(true);
}
KisPattern* KisPattern::clone() const
{
KisPattern* pattern = new KisPattern("");
pattern->setImage(m_img);
pattern->setName(name());
return pattern;
}
#include "kis_pattern.moc"