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koffice/krita/ui/kis_tool_freehand.cc

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/*
* kis_tool_brush.cc - part of Krita
*
* Copyright (c) 2003-2004 Boudewijn Rempt <boud@valdyas.org>
* Copyright (c) 2004 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#include <qevent.h>
#include <qlabel.h>
#include <qlayout.h>
#include <qwidget.h>
#include <qrect.h>
#include <kdebug.h>
#include <kaction.h>
#include <kcommand.h>
#include <klocale.h>
#include "kis_canvas_subject.h"
#include "kis_undo_adapter.h"
#include "kis_selection.h"
#include "kis_painter.h"
#include "kis_fill_painter.h"
#include "kis_tool_freehand.h"
#include "kis_cursor.h"
#include "kis_button_press_event.h"
#include "kis_button_release_event.h"
#include "kis_move_event.h"
#include "kis_layer.h"
#include "kis_group_layer.h"
#include "kis_paint_layer.h"
#include "kis_canvas.h"
#include "kis_canvas_painter.h"
#include "kis_boundary_painter.h"
#include "kis_brush.h"
KisToolFreehand::KisToolFreehand(QString transactionText)
: super(transactionText),
m_dragDist ( 0 ),
m_transactionText(transactionText),
m_mode( HOVER )
{
m_painter = 0;
m_currentImage = 0;
m_tempLayer = 0;
m_paintIncremental = true;
m_paintOnSelection = false;
m_paintedOutline = false;
}
KisToolFreehand::~KisToolFreehand()
{
}
void KisToolFreehand::update(KisCanvasSubject *subject)
{
super::update(subject);
m_currentImage = m_subject->currentImg();
}
void KisToolFreehand::buttonPress(KisButtonPressEvent *e)
{
if (!m_subject) return;
if (!m_subject->currentBrush()) return;
if (!m_currentImage || !m_currentImage->activeDevice()) return;
if (e->button() == QMouseEvent::LeftButton) {
m_currentImage->activeDevice()->lock( true );
kdDebug() << ">>>>>>>>>>>>>>>>>>>Locking paint device\n";
// People complain that they can't start brush strokes outside of the image boundaries.
// This makes sense, especially when combined with BUG:132759, so commenting out the
// next line makes sense.
//if (!m_currentImage->bounds().contains(e->pos().floorQPoint())) return;
initPaint(e);
paintAt(e->pos(), e->pressure(), e->xTilt(), e->yTilt());
m_prevPos = e->pos();
m_prevPressure = e->pressure();
m_prevXTilt = e->xTilt();
m_prevYTilt = e->yTilt();
QRect r = m_painter->dirtyRect();
if ( r.isValid() ) {
m_dirtyRect = r;
r = QRect(r.left()-1, r.top()-1, r.width()+2, r.height()+2); //needed to update selectionvisualization
if (!m_paintOnSelection) {
m_currentImage->activeLayer()->setDirty(r);
}
else {
m_target->setDirty(r);
// Just update the canvas. XXX: After 1.5, find a better way to make sure tools don't set dirty what they didn't touch.
m_subject->canvasController()->updateCanvas( r );
}
}
}
}
void KisToolFreehand::buttonRelease(KisButtonReleaseEvent* e)
{
if (e->button() == QMouseEvent::LeftButton && m_mode == PAINT) {
endPaint();
m_currentImage->activeDevice()->lock( false );
kdDebug() << ">>>>>>>>>>>>>>>>>>>UNLocking paint device\n";
}
KisToolPaint::buttonRelease(e);
}
void KisToolFreehand::move(KisMoveEvent *e)
{
if (m_mode == PAINT) {
paintLine(m_prevPos, m_prevPressure, m_prevXTilt, m_prevYTilt, e->pos(), e->pressure(), e->xTilt(), e->yTilt());
m_prevPos = e->pos();
m_prevPressure = e->pressure();
m_prevXTilt = e->xTilt();
m_prevYTilt = e->yTilt();
QRect r = m_painter->dirtyRect();
if (r.isValid()) {
m_dirtyRect |= r;
if (!m_paintOnSelection) {
m_currentImage->activeLayer()->setDirty(r);
}
else {
// Just update the canvas
r = QRect(r.left()-1, r.top()-1, r.width()+2, r.height()+2); //needed to update selectionvisualization
m_target->setDirty(r);
m_subject->canvasController()->updateCanvas( r );
}
}
}
}
void KisToolFreehand::initPaint(KisEvent *)
{
if (!m_currentImage || !m_currentImage->activeDevice()) return;
m_mode = PAINT;
m_dragDist = 0;
// Create painter
KisPaintDeviceSP device;
if (m_currentImage && (device = m_currentImage->activeDevice())) {
if (m_painter)
delete m_painter;
if (!m_paintIncremental) {
if (m_currentImage->undo())
m_currentImage->undoAdapter()->beginMacro(m_transactionText);
KisLayerSupportsIndirectPainting* layer;
if ((layer = dynamic_cast<KisLayerSupportsIndirectPainting*>(
m_currentImage->activeLayer().data()))) {
// Hack for the painting of single-layered layers using indirect painting,
// because the group layer would not have a correctly synched cache (
// because of an optimization that would happen, having this layer as
// projection).
KisLayer* l = layer->layer();
KisPaintLayer* pl = dynamic_cast<KisPaintLayer*>(l);
if (l->parent() && (l->parent()->parent() == 0)
&& (l->parent()->childCount() == 1)
&& l->parent()->paintLayerInducesProjectionOptimization(pl)) {
// If there's a mask, device could've been the mask. The induce function
// should catch this, but better safe than sorry
l->parent()->resetProjection(pl->paintDevice());
}
m_target = new KisPaintDevice(m_currentImage->activeLayer(),
device->colorSpace());
layer->setTemporaryTarget(m_target);
layer->setTemporaryCompositeOp(m_compositeOp);
layer->setTemporaryOpacity(m_opacity);
if (device->hasSelection())
m_target->setSelection(device->selection());
}
} else {
m_target = device;
}
if(m_target->hasSelection()) m_target->selection()->startCachingExactRect();
m_painter = new KisPainter( m_target );
Q_CHECK_PTR(m_painter);
m_source = device;
if (currentImage()->undo()) m_painter->beginTransaction(m_transactionText);
}
m_painter->setPaintColor(m_subject->fgColor());
m_painter->setBackgroundColor(m_subject->bgColor());
m_painter->setBrush(m_subject->currentBrush());
// if you're drawing on a temporary layer, the layer already sets this
if (m_paintIncremental) {
m_painter->setCompositeOp(m_compositeOp);
m_painter->setOpacity(m_opacity);
} else {
m_painter->setCompositeOp(COMPOSITE_ALPHA_DARKEN);
m_painter->setOpacity( OPACITY_OPAQUE );
}
/* kdDebug() << "target: " << m_target << "( " << m_target->name() << " )"
<< " source: " << m_source << "( " << m_source->name() << " )"
<< ", incremental " << m_paintIncremental
<< ", paint on selection: " << m_paintOnSelection
<< ", active device has selection: " << device->hasSelection()
<< ", target has selection: " << m_target->hasSelection()
<< endl;
*/
}
void KisToolFreehand::endPaint()
{
m_mode = HOVER;
if (m_currentImage) {
if (m_painter) {
// If painting in mouse release, make sure painter
// is destructed or end()ed
if (!m_paintIncremental) {
if (m_currentImage->undo())
m_painter->endTransaction();
KisPainter painter( m_source );
painter.setCompositeOp(m_compositeOp);
if (m_currentImage->undo())
painter.beginTransaction(m_transactionText);
painter.bitBlt(m_dirtyRect.x(), m_dirtyRect.y(), m_compositeOp, m_target,
m_opacity,
m_dirtyRect.x(), m_dirtyRect.y(),
m_dirtyRect.width(), m_dirtyRect.height());
KisLayerSupportsIndirectPainting* layer =
dynamic_cast<KisLayerSupportsIndirectPainting*>(m_source->parentLayer());
layer->setTemporaryTarget(0);
m_source->parentLayer()->setDirty(m_dirtyRect);
if (m_currentImage->undo()) {
m_currentImage->undoAdapter()->addCommand(painter.endTransaction());
m_currentImage->undoAdapter()->endMacro();
}
} else {
if (m_currentImage->undo())
m_currentImage->undoAdapter()->addCommand(m_painter->endTransaction());
}
}
delete m_painter;
m_painter = 0;
notifyModified();
if(m_target->hasSelection()) m_target->selection()->stopCachingExactRect();
}
}
void KisToolFreehand::paintAt(const KisPoint &pos,
const double pressure,
const double xTilt,
const double yTilt)
{
painter()->paintAt(pos, pressure, xTilt, yTilt);
}
void KisToolFreehand::paintLine(const KisPoint & pos1,
const double pressure1,
const double xtilt1,
const double ytilt1,
const KisPoint & pos2,
const double pressure2,
const double xtilt2,
const double ytilt2)
{
m_dragDist = painter()->paintLine(pos1, pressure1, xtilt1, ytilt1, pos2, pressure2, xtilt2, ytilt2, m_dragDist);
}
KisImageSP KisToolFreehand::currentImage()
{
return m_currentImage;
}
void KisToolFreehand::paintOutline(const KisPoint& point) {
if (!m_subject) {
return;
}
KisCanvasController *controller = m_subject->canvasController();
if (currentImage() && !currentImage()->bounds().contains(point.floorQPoint())) {
if (m_paintedOutline) {
controller->kiscanvas()->update();
m_paintedOutline = false;
}
return;
}
KisCanvas *canvas = controller->kiscanvas();
canvas->repaint();
KisBrush *brush = m_subject->currentBrush();
// There may not be a brush present, and we shouldn't crash in that case
if (brush) {
KisCanvasPainter gc(canvas);
QPen pen(Qt::SolidLine);
KisPoint hotSpot = brush->hotSpot();
gc.setRasterOp(Qt::NotROP);
gc.setPen(pen);
gc.setViewport(0, 0, static_cast<Q_INT32>(canvas->width() * m_subject->zoomFactor()),
static_cast<Q_INT32>(canvas->height() * m_subject->zoomFactor()));
gc.translate((- controller->horzValue()) / m_subject->zoomFactor(),
(- controller->vertValue()) / m_subject->zoomFactor());
KisPoint topLeft = point - hotSpot;
if (m_subject->currentPaintop().id() == "pen") {
// Pen paints on whole pixels only.
topLeft = topLeft.roundQPoint();
}
gc.translate(topLeft.x(), topLeft.y());
KisBoundaryPainter::paint(brush->boundary(), gc);
m_paintedOutline = true;
}
}
#include "kis_tool_freehand.moc"