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koffice/chalk/plugins/tools/tool_polyline/kis_tool_polyline.cc

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/*
* kis_tool_polyline.cc -- part of Chalk
*
* Copyright (c) 2004 Michael Thaler <michael.thaler@physik.tu-muenchen.de>
*
* 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 <math.h>
#include <tqpainter.h>
#include <tqspinbox.h>
#include <kaction.h>
#include <kdebug.h>
#include <klocale.h>
#include <kdebug.h>
#include <knuminput.h>
#include "kis_doc.h"
#include "kis_view.h"
#include "kis_painter.h"
#include "kis_canvas_subject.h"
#include "kis_canvas_controller.h"
#include "kis_button_press_event.h"
#include "kis_button_release_event.h"
#include "kis_move_event.h"
#include "kis_paintop_registry.h"
#include "kis_canvas.h"
#include "kis_canvas_painter.h"
#include "kis_cursor.h"
#include "kis_tool_polyline.h"
KisToolPolyline::KisToolPolyline()
: super(i18n ("Polyline")),
m_dragging (false),
m_currentImage (0)
{
setName("tool_polyline");
setCursor(KisCursor::load("tool_polyline_cursor.png", 6, 6));
}
KisToolPolyline::~KisToolPolyline()
{
}
void KisToolPolyline::update (KisCanvasSubject *subject)
{
super::update (subject);
if (m_subject)
m_currentImage = m_subject->currentImg ();
}
void KisToolPolyline::buttonPress(KisButtonPressEvent *event)
{
if (m_currentImage) {
if (event->button() == Qt::LeftButton && event->state() != TQt::ShiftButton ) {
m_dragging = true;
if (m_points.isEmpty())
{
m_dragStart = event->pos();
m_dragEnd = event->pos();
m_points.append(m_dragStart);
} else {
m_dragStart = m_dragEnd;
m_dragEnd = event->pos();
draw();
}
} else if (event->button() == Qt::LeftButton && event->state() == TQt::ShiftButton ) {
finish();
}
}
}
void KisToolPolyline::deactivate()
{
draw();
m_points.clear();
m_dragging = false;
}
void KisToolPolyline::finish()
{
// erase old lines on canvas
draw();
m_dragging = false;
KisPaintDeviceSP device = m_currentImage->activeDevice ();
if (!device) return;
KisPainter painter (device);
if (m_currentImage->undo()) painter.beginTransaction (i18n ("Polyline"));
painter.setPaintColor(m_subject->fgColor());
painter.setBrush(m_subject->currentBrush());
painter.setOpacity(m_opacity);
painter.setCompositeOp(m_compositeOp);
KisPaintOp * op = KisPaintOpRegistry::instance()->paintOp(m_subject->currentPaintop(), m_subject->currentPaintopSettings(), &painter);
painter.setPaintOp(op); // Painter takes ownership
KisPoint start,end;
KisPointVector::iterator it;
for( it = m_points.begin(); it != m_points.end(); ++it )
{
if( it == m_points.begin() )
{
start = (*it);
} else {
end = (*it);
painter.paintLine(start, PRESSURE_DEFAULT, 0, 0, end, PRESSURE_DEFAULT, 0, 0);
start = end;
}
}
m_points.clear();
device->setDirty( painter.dirtyRect() );
notifyModified();
if (m_currentImage->undo()) {
m_currentImage->undoAdapter()->addCommand(painter.endTransaction());
}
}
void KisToolPolyline::move(KisMoveEvent *event)
{
if (m_dragging) {
// erase old lines on canvas
draw();
// get current mouse position
m_dragEnd = event->pos();
// draw new lines on canvas
draw();
}
}
void KisToolPolyline::buttonRelease(KisButtonReleaseEvent *event)
{
if (!m_subject || !m_currentImage)
return;
if (m_dragging && event->button() == Qt::LeftButton) {
m_dragging = false;
m_points.append (m_dragEnd);
}
if (m_dragging && event->button() == Qt::RightButton) {
}
}
void KisToolPolyline::doubleClick(KisDoubleClickEvent *)
{
finish();
}
void KisToolPolyline::paint(KisCanvasPainter& gc)
{
draw(gc);
}
void KisToolPolyline::paint(KisCanvasPainter& gc, const TQRect&)
{
draw(gc);
}
void KisToolPolyline::draw()
{
if (m_subject) {
KisCanvasController *controller = m_subject->canvasController();
KisCanvas *canvas = controller->kiscanvas();
KisCanvasPainter gc(canvas);
draw(gc);
}
}
void KisToolPolyline::draw(KisCanvasPainter& gc)
{
if (!m_subject || !m_currentImage)
return;
TQPen pen(TQt::white, 0, TQt::SolidLine);
gc.setPen(pen);
gc.setRasterOp(TQt::XorROP);
KisCanvasController *controller = m_subject->canvasController();
KisPoint start, end;
TQPoint startPos;
TQPoint endPos;
if (m_dragging) {
startPos = controller->windowToView(m_dragStart.floorTQPoint());
endPos = controller->windowToView(m_dragEnd.floorTQPoint());
gc.drawLine(startPos, endPos);
} else {
for (KisPointVector::iterator it = m_points.begin(); it != m_points.end(); ++it) {
if (it == m_points.begin())
{
start = (*it);
} else {
end = (*it);
startPos = controller->windowToView(start.floorTQPoint());
endPos = controller->windowToView(end.floorTQPoint());
gc.drawLine(startPos, endPos);
start = end;
}
}
}
}
void KisToolPolyline::setup(KActionCollection *collection)
{
m_action = static_cast<KRadioAction *>(collection->action(name()));
if (m_action == 0) {
KShortcut shortcut(TQt::Key_Plus);
shortcut.append(KShortcut(TQt::Key_F9));
m_action = new KRadioAction(i18n("&Polyline"),
"polyline",
shortcut,
this,
TQT_SLOT(activate()),
collection,
name());
TQ_CHECK_PTR(m_action);
m_action->setToolTip(i18n("Draw a polyline. Shift-mouseclick ends the polyline."));
m_action->setExclusiveGroup("tools");
m_ownAction = true;
}
}
TQString KisToolPolyline::quickHelp() const
{
return i18n("Press shift-mouseclick to end the polyline.");
}
void KisToolPolyline::keyPress(TQKeyEvent *e)
{
if (e->key()==TQt::Key_Escape) {
// erase old lines on canvas
draw();
m_dragging = false;
m_points.clear();
}
}
#include "kis_tool_polyline.moc"