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koffice/chalk/core/kis_paint_layer.cpp

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/*
* Copyright (c) 2005 Casper Boemann <cbr@boemann.dk>
* Copyright (c) 2006 Bart Coppens <kde@bartcoppens.be>
*
* 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., 675 mass ave, cambridge, ma 02139, usa.
*/
#include <kdebug.h>
#include <tqimage.h>
#include "kis_debug_areas.h"
#include "kis_image.h"
#include "kis_paint_layer.h"
#include "kis_selection.h"
#include "kis_painter.h"
#include "kis_undo_adapter.h"
#include "kis_iterators_pixel.h"
#include "kis_paint_device.h"
#include "kis_meta_registry.h"
#include "kis_colorspace_factory_registry.h"
#include "kis_datamanager.h"
#include "kis_undo_adapter.h"
KisPaintLayer::KisPaintLayer(KisImage *img, const TQString& name, TQ_UINT8 opacity, KisPaintDeviceSP dev)
: super(img, name, opacity)
{
Q_ASSERT(img);
Q_ASSERT(dev);
m_paintdev = dev;
m_mask = 0;
m_maskAsSelection = 0;
m_paintdev->setParentLayer(this);
m_renderMask = false;
m_editMask = true;
}
KisPaintLayer::KisPaintLayer(KisImage *img, const TQString& name, TQ_UINT8 opacity)
: super(img, name, opacity)
{
Q_ASSERT(img);
m_paintdev = new KisPaintDevice(this, img->colorSpace(), name.latin1());
m_mask = 0;
m_maskAsSelection = 0;
m_renderMask = false;
m_editMask = true;
}
KisPaintLayer::KisPaintLayer(KisImage *img, const TQString& name, TQ_UINT8 opacity, KisColorSpace * colorSpace)
: super(img, name, opacity)
{
Q_ASSERT(img);
Q_ASSERT(colorSpace);
m_paintdev = new KisPaintDevice(this, colorSpace, name.latin1());
m_mask = 0;
m_maskAsSelection = 0;
m_renderMask = false;
m_editMask = true;
}
KisPaintLayer::KisPaintLayer(const KisPaintLayer& rhs) :
KisLayer(rhs), KisLayerSupportsIndirectPainting(rhs)
{
m_paintdev = new KisPaintDevice( *rhs.m_paintdev.data() );
m_paintdev->setParentLayer(this);
if (rhs.hasMask()) {
m_mask = new KisPaintDevice(*rhs.m_mask.data());
m_mask->setParentLayer(this);
}
m_renderMask = rhs.m_renderMask;
m_editMask = rhs.m_editMask;
}
KisLayerSP KisPaintLayer::clone() const
{
return new KisPaintLayer(*this);
}
KisPaintLayer::~KisPaintLayer()
{
if (m_paintdev != 0) {
m_paintdev->setParentLayer(0);
}
if (m_mask != 0) {
m_mask->setParentLayer(0);
}
}
void KisPaintLayer::paintSelection(TQImage &img, TQ_INT32 x, TQ_INT32 y, TQ_INT32 w, TQ_INT32 h)
{
if (m_paintdev && m_paintdev->hasSelection()) {
m_paintdev->selection()->paintSelection(img, x, y, w, h);
} else if (m_mask && m_editMask && m_mask->hasSelection()) {
m_mask->selection()->paintSelection(img, x, y, w, h);
}
}
void KisPaintLayer::paintSelection(TQImage &img, const TQRect& scaledImageRect, const TQSize& scaledImageSize, const TQSize& imageSize)
{
if (m_paintdev && m_paintdev->hasSelection()) {
m_paintdev->selection()->paintSelection(img, scaledImageRect, scaledImageSize, imageSize);
} else if (m_mask && m_editMask && m_mask->hasSelection()) {
m_mask->selection()->paintSelection(img, scaledImageRect, scaledImageSize, imageSize);
}
}
void KisPaintLayer::paintMaskInactiveLayers(TQImage &img, TQ_INT32 x, TQ_INT32 y, TQ_INT32 w, TQ_INT32 h)
{
uchar *j = img.bits();
KisColorSpace *cs = m_paintdev->colorSpace();
for (TQ_INT32 y2 = y; y2 < h + y; ++y2) {
KisHLineIteratorPixel it = m_paintdev->createHLineIterator(x, y2, w, false);
while ( ! it.isDone()) {
TQ_UINT8 s = cs->getAlpha(it.rawData());
if(s==0)
{
TQ_UINT8 g = (*(j + 0) + *(j + 1 ) + *(j + 2 )) / 9;
*(j+0) = 128+g ;
*(j+1) = 165+g;
*(j+2) = 128+g;
}
j+=4;
++it;
}
}
}
TQImage KisPaintLayer::createThumbnail(TQ_INT32 w, TQ_INT32 h)
{
if (m_paintdev)
return m_paintdev->createThumbnail(w, h);
else
return TQImage();
}
TQ_INT32 KisPaintLayer::x() const {
if (m_paintdev)
return m_paintdev->getX();
else return 0;
}
void KisPaintLayer::setX(TQ_INT32 x)
{
if (m_paintdev)
m_paintdev->setX(x);
}
TQ_INT32 KisPaintLayer::y() const {
if (m_paintdev)
return m_paintdev->getY();
else
return 0;
}
void KisPaintLayer::setY(TQ_INT32 y) {
if (m_paintdev)
m_paintdev->setY(y);
}
TQRect KisPaintLayer::extent() const {
if (m_paintdev)
return m_paintdev->extent();
else
return TQRect();
}
TQRect KisPaintLayer::exactBounds() const {
if (m_paintdev)
return m_paintdev->exactBounds();
else
return TQRect();
}
void KisPaintLayer::removeMask() {
if (!hasMask())
return;
m_mask->setParentLayer(0);
m_mask = 0;
m_maskAsSelection = 0;
setDirty();
emit sigMaskInfoChanged();
}
// ### XXX Do we apply the mask outside the image boundaries too? I'd say no, but I'm not sure
void KisPaintLayer::applyMask() {
if (!hasMask())
return;
int x, y, w, h;
m_paintdev->extent(x, y, w, h);
// A bit slow; but it works
KisPaintDeviceSP temp = new KisPaintDevice(m_paintdev->colorSpace());
KisPainter gc(temp);
gc.bltSelection(x, y, COMPOSITE_OVER, m_paintdev, m_maskAsSelection, OPACITY_OPAQUE, x, y, w, h);
gc.end();
gc.begin(m_paintdev);
gc.bitBlt(x, y, COMPOSITE_COPY, temp, OPACITY_OPAQUE, x, y, w, h);
gc.end();
removeMask();
}
KisPaintDeviceSP KisPaintLayer::createMask() {
if (hasMask())
return m_mask;
kdDebug() << k_funcinfo << endl;
// Grey8 nicely fits our needs of being intuitively comparable to other apps'
// mask layer interfaces. It does have an alpha component though, which is a bit
// less appropriate in this context.
m_mask = new KisPaintDevice(KisMetaRegistry::instance()->csRegistry()
->getColorSpace(KisID("GRAYA"), 0));
genericMaskCreationHelper();
return m_mask;
}
// FIXME If from is a paint device is not grey8!!
void KisPaintLayer::createMaskFromPaintDevice(KisPaintDeviceSP from) {
if (hasMask())
return; // Or overwrite? XXX
kdDebug() << k_funcinfo << endl;
m_mask = from; // KisPaintDevice(*from); XXX
genericMaskCreationHelper();
}
void KisPaintLayer::createMaskFromSelection(KisSelectionSP from) {
kdDebug() << k_funcinfo << endl;
m_mask = new KisPaintDevice(KisMetaRegistry::instance()->csRegistry()
->getColorSpace(KisID("GRAYA"), 0));
m_mask->setParentLayer(this);
m_maskAsSelection = new KisSelection(); // Anonymous selection is good enough
// Default pixel is opaque white == don't mask?
TQ_UINT8 const defPixel[] = { 255, 255 };
m_mask->dataManager()->setDefaultPixel(defPixel);
if (from) {
TQRect r(extent());
int w = r.width();
int h = r.height();
for (int y = r.y(); y < h; y++) {
KisHLineIteratorPixel srcIt = from->createHLineIterator(r.x(), y, w, false);
KisHLineIteratorPixel dstIt = m_mask->createHLineIterator(r.x(), y, w, true);
while(!dstIt.isDone()) {
// XXX same remark as in convertMaskToSelection
*dstIt.rawData() = *srcIt.rawData();
++srcIt;
++dstIt;
}
}
}
convertMaskToSelection(extent());
m_paintdev->deselect();
setDirty();
emit sigMaskInfoChanged();
}
KisPaintDeviceSP KisPaintLayer::getMask() {
createMask();
kdDebug() << k_funcinfo << endl;
return m_mask;
}
KisSelectionSP KisPaintLayer::getMaskAsSelection() {
createMask();
kdDebug() << k_funcinfo << endl;
return m_maskAsSelection;
}
void KisPaintLayer::setEditMask(bool b) {
m_editMask = b;
emit sigMaskInfoChanged();
}
void KisPaintLayer::setRenderMask(bool b) {
m_renderMask = b;
if (hasMask())
setDirty();
emit sigMaskInfoChanged();
}
void KisPaintLayer::convertMaskToSelection(const TQRect& r) {
KisRectIteratorPixel srcIt = m_mask->createRectIterator(r.x(), r.y(),
r.width(), r.height(), false);
KisRectIteratorPixel dstIt = m_maskAsSelection->createRectIterator(r.x(), r.y(),
r.width(), r.height(), true);
while(!dstIt.isDone()) {
// src is grey8 (grey + alpha), dst is alpha8. We convert the grey value to
// alpha8 manually and ignore the alpha (that's why we don't convert using default
// functions, and interpret the data raw!) [ XXX ]
*dstIt.rawData() = *srcIt.rawData();
++srcIt;
++dstIt;
}
}
void KisPaintLayer::genericMaskCreationHelper() {
m_mask->setParentLayer(this);
m_maskAsSelection = new KisSelection(); // Anonymous selection is good enough
// Default pixel is opaque white == don't mask?
TQ_UINT8 const defPixel[] = { 255, 255 };
m_mask->dataManager()->setDefaultPixel(defPixel);
setDirty();
emit sigMaskInfoChanged();
}
void KisPaintLayer::setDirty(bool propagate) {
if (hasMask())
convertMaskToSelection(extent());
super::setDirty(propagate);
}
void KisPaintLayer::setDirty(const TQRect & rect, bool propagate) {
if (hasMask())
convertMaskToSelection(rect);
super::setDirty(rect, propagate);
}
// Undoable versions code
namespace {
class KisCreateMaskCommand : public KNamedCommand {
typedef KNamedCommand super;
KisPaintLayerSP m_layer;
KisPaintDeviceSP m_mask;
public:
KisCreateMaskCommand(const TQString& name, KisPaintLayer* layer)
: super(name), m_layer(layer) {}
virtual void execute() {
kdDebug() << k_funcinfo << endl;
if (!m_mask)
m_mask = m_layer->createMask();
else
m_layer->createMaskFromPaintDevice(m_mask);
}
virtual void unexecute() {
m_layer->removeMask();
}
};
class KisMaskFromSelectionCommand : public KNamedCommand {
typedef KNamedCommand super;
KisPaintLayerSP m_layer;
KisPaintDeviceSP m_maskBefore;
KisPaintDeviceSP m_maskAfter;
KisSelectionSP m_selection;
public:
KisMaskFromSelectionCommand(const TQString& name, KisPaintLayer* layer)
: super(name), m_layer(layer) {
if (m_layer->hasMask())
m_maskBefore = m_layer->getMask();
else
m_maskBefore = 0;
m_maskAfter = 0;
if (m_layer->paintDevice()->hasSelection())
m_selection = m_layer->paintDevice()->selection();
else
m_selection = 0;
}
virtual void execute() {
if (!m_maskAfter) {
m_layer->createMaskFromSelection(m_selection);
m_maskAfter = m_layer->getMask();
} else {
m_layer->paintDevice()->deselect();
m_layer->createMaskFromPaintDevice(m_maskAfter);
}
}
virtual void unexecute() {
m_layer->paintDevice()->setSelection(m_selection);
if (m_maskBefore)
m_layer->createMaskFromPaintDevice(m_maskBefore);
else
m_layer->removeMask();
}
};
class KisMaskToSelectionCommand : public KNamedCommand {
typedef KNamedCommand super;
KisPaintLayerSP m_layer;
KisPaintDeviceSP m_mask;
KisSelectionSP m_selection;
public:
KisMaskToSelectionCommand(const TQString& name, KisPaintLayer* layer)
: super(name), m_layer(layer) {
m_mask = m_layer->getMask();
if (m_layer->paintDevice()->hasSelection())
m_selection = m_layer->paintDevice()->selection();
else
m_selection = 0;
}
virtual void execute() {
m_layer->paintDevice()->setSelection(m_layer->getMaskAsSelection());
m_layer->removeMask();
}
virtual void unexecute() {
if (m_selection)
m_layer->paintDevice()->setSelection(m_selection);
else
m_layer->paintDevice()->deselect();
m_layer->createMaskFromPaintDevice(m_mask);
}
};
class KisRemoveMaskCommand : public KNamedCommand {
typedef KNamedCommand super;
KisPaintLayerSP m_layer;
KisPaintDeviceSP m_mask;
public:
KisRemoveMaskCommand(const TQString& name, KisPaintLayer* layer)
: super(name), m_layer(layer) {
m_mask = m_layer->getMask();
}
virtual void execute() {
kdDebug() << k_funcinfo << endl;
m_layer->removeMask();
}
virtual void unexecute() {
// I hope that if the undo stack unwinds, it will end up here in the right
// state again; taking a deep-copy sounds like wasteful to me
m_layer->createMaskFromPaintDevice(m_mask);
}
};
class KisApplyMaskCommand : public KNamedCommand {
typedef KNamedCommand super;
KisPaintLayerSP m_layer;
KisPaintDeviceSP m_mask;
KisPaintDeviceSP m_original;
public:
KisApplyMaskCommand(const TQString& name, KisPaintLayer* layer)
: super(name), m_layer(layer) {
m_mask = m_layer->getMask();
m_original = new KisPaintDevice(*m_layer->paintDevice());
}
virtual void execute() {
m_layer->applyMask();
}
virtual void unexecute() {
// I hope that if the undo stack unwinds, it will end up here in the right
// state again; taking a deep-copy sounds like wasteful to me
KisPainter gc(m_layer->paintDevice());
int x, y, w, h;
m_layer->paintDevice()->extent(x, y, w, h);
gc.bitBlt(x, y, COMPOSITE_COPY, m_original, OPACITY_OPAQUE, x, y, w, h);
gc.end();
m_layer->createMaskFromPaintDevice(m_mask);
}
};
}
KNamedCommand* KisPaintLayer::createMaskCommand() {
return new KisCreateMaskCommand(i18n("Create Layer Mask"), this);
}
KNamedCommand* KisPaintLayer::maskFromSelectionCommand() {
return new KisMaskFromSelectionCommand(i18n("Mask From Selection"), this);
}
KNamedCommand* KisPaintLayer::maskToSelectionCommand() {
return new KisMaskToSelectionCommand(i18n("Mask to Selection"), this);
}
KNamedCommand* KisPaintLayer::removeMaskCommand() {
return new KisRemoveMaskCommand(i18n("Remove Layer Mask"), this);
}
KNamedCommand* KisPaintLayer::applyMaskCommand() {
return new KisApplyMaskCommand(i18n("Apply Layer Mask"), this);
}
#include "kis_paint_layer.moc"