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koffice/chalk/plugins/tools/tool_star/kis_tool_star.cc

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/*
* kis_tool_star.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 <tqlayout.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_int_spinbox.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_int_spinbox.h"
#include "kis_tool_star.h"
#include "wdg_tool_star.h"
KisToolStar::KisToolStar()
: super(i18n("Star")),
m_dragging (false),
m_currentImage (0)
{
setName("tool_star");
setCursor(KisCursor::load("tool_star_cursor.png", 6, 6));
m_innerOuterRatio=40;
m_vertices=5;
}
KisToolStar::~KisToolStar()
{
}
void KisToolStar::update (KisCanvasSubject *subject)
{
super::update (subject);
if (m_subject)
m_currentImage = m_subject->currentImg ();
}
void KisToolStar::buttonPress(KisButtonPressEvent *event)
{
if (m_currentImage && event->button() == Qt::LeftButton) {
m_dragging = true;
m_dragStart = event->pos();
m_dragEnd = event->pos();
m_vertices = m_optWidget->verticesSpinBox->value();
m_innerOuterRatio = m_optWidget->ratioSpinBox->value();
}
}
void KisToolStar::move(KisMoveEvent *event)
{
if (m_dragging) {
// erase old lines on canvas
draw(m_dragStart, m_dragEnd);
// move (alt) or resize star
if (event->state() & TQt::AltButton) {
KisPoint trans = event->pos() - m_dragEnd;
m_dragStart += trans;
m_dragEnd += trans;
} else {
m_dragEnd = event->pos();
}
// draw new lines on canvas
draw(m_dragStart, m_dragEnd);
}
}
void KisToolStar::buttonRelease(KisButtonReleaseEvent *event)
{
if (!m_subject || !m_currentImage)
return;
if (m_dragging && event->button() == Qt::LeftButton) {
// erase old lines on canvas
draw(m_dragStart, m_dragEnd);
m_dragging = false;
if (m_dragStart == m_dragEnd)
return;
if (!m_currentImage)
return;
if (!m_currentImage->activeDevice())
return;
KisPaintDeviceSP device = m_currentImage->activeDevice ();;
KisPainter painter (device);
if (m_currentImage->undo()) painter.beginTransaction (i18n("Star"));
painter.setPaintColor(m_subject->fgColor());
painter.setBackgroundColor(m_subject->bgColor());
painter.setFillStyle(fillStyle());
painter.setBrush(m_subject->currentBrush());
painter.setPattern(m_subject->currentPattern());
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
vKisPoint coord = starCoordinates(m_vertices, m_dragStart.x(), m_dragStart.y(), m_dragEnd.x(), m_dragEnd.y());
painter.paintPolygon(coord);
device->setDirty( painter.dirtyRect() );
notifyModified();
if (m_currentImage->undo()) {
m_currentImage->undoAdapter()->addCommand(painter.endTransaction());
}
}
}
void KisToolStar::draw(const KisPoint& start, const KisPoint& end )
{
if (!m_subject || !m_currentImage)
return;
KisCanvasController *controller = m_subject->canvasController();
KisCanvas *canvas = controller->kiscanvas();
KisCanvasPainter p (canvas);
TQPen pen(TQt::SolidLine);
KisPoint startPos;
KisPoint endPos;
startPos = controller->windowToView(start);
endPos = controller->windowToView(end);
p.setRasterOp(TQt::NotROP);
vKisPoint points = starCoordinates(m_vertices, startPos.x(), startPos.y(), endPos.x(), endPos.y());
for (uint i = 0; i < points.count() - 1; i++) {
p.drawLine(points[i].floorTQPoint(), points[i + 1].floorTQPoint());
}
p.drawLine(points[points.count() - 1].floorTQPoint(), points[0].floorTQPoint());
p.end ();
}
void KisToolStar::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("&Star"),
"tool_star",
shortcut,
this,
TQT_SLOT(activate()),
collection,
name());
TQ_CHECK_PTR(m_action);
m_action->setToolTip(i18n("Draw a star"));
m_action->setExclusiveGroup("tools");
m_ownAction = true;
}
}
vKisPoint KisToolStar::starCoordinates(int N, double mx, double my, double x, double y)
{
double R=0, r=0;
TQ_INT32 n=0;
double angle;
vKisPoint starCoordinatesArray(2*N);
// the radius of the outer edges
R=sqrt((x-mx)*(x-mx)+(y-my)*(y-my));
// the radius of the inner edges
r=R*m_innerOuterRatio/100.0;
// the angle
angle=-atan2((x-mx),(y-my));
//set outer edges
for(n=0;n<N;n++){
starCoordinatesArray[2*n] = KisPoint(mx+R*cos(n * 2.0 * M_PI / N + angle),my+R*sin(n *2.0 * M_PI / N+angle));
}
//set inner edges
for(n=0;n<N;n++){
starCoordinatesArray[2*n+1] = KisPoint(mx+r*cos((n + 0.5) * 2.0 * M_PI / N + angle),my+r*sin((n +0.5) * 2.0 * M_PI / N + angle));
}
return starCoordinatesArray;
}
TQWidget* KisToolStar::createOptionWidget(TQWidget* parent)
{
TQWidget *widget = super::createOptionWidget(parent);
m_optWidget = new WdgToolStar(widget);
TQ_CHECK_PTR(m_optWidget);
m_optWidget->ratioSpinBox->setValue(m_innerOuterRatio);
TQGridLayout *optionLayout = new TQGridLayout(widget, 1, 1);
super::addOptionWidgetLayout(optionLayout);
optionLayout->addWidget(m_optWidget, 0, 0);
return widget;
}
#include "kis_tool_star.moc"