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/*
* kis_tool_ellipse.cc - part of Krayon
*
* Copyright (c) 2000 John Califf <[email protected]>
* Copyright (c) 2002 Patrick Julien <[email protected]>
* Copyright (c) 2004 Boudewijn Rempt <[email protected]>
* Copyright (c) 2004 Clarence Dang <[email protected]>
*
* 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 <tqpainter.h>
#include <tdeaction.h>
#include <kdebug.h>
#include <tdelocale.h>
#include "kis_painter.h"
#include "kis_canvas_subject.h"
#include "kis_canvas_controller.h"
#include "kis_tool_ellipse.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_undo_adapter.h"
#include "kis_canvas.h"
#include "kis_canvas_painter.h"
#include "kis_cursor.h"
KisToolEllipse::KisToolEllipse()
: super(i18n ("Ellipse")),
m_dragging (false),
m_currentImage (0)
{
setName("tool_ellipse");
setCursor(KisCursor::load("tool_ellipse_cursor.png", 6, 6));
}
KisToolEllipse::~KisToolEllipse()
{
}
void KisToolEllipse::update (KisCanvasSubject *subject)
{
super::update (subject);
if (m_subject)
m_currentImage = m_subject->currentImg ();
}
void KisToolEllipse::buttonPress(KisButtonPressEvent *event)
{
if (m_currentImage && event->button() == Qt::LeftButton) {
m_dragging = true;
m_dragStart = m_dragCenter = m_dragEnd = event->pos();
draw(m_dragStart, m_dragEnd);
}
}
void KisToolEllipse::move(KisMoveEvent *event)
{
if (m_dragging) {
// erase old lines on canvas
draw(m_dragStart, m_dragEnd);
// move (alt) or resize ellipse
if (event->state() & TQt::AltButton) {
KisPoint trans = event->pos() - m_dragEnd;
m_dragStart += trans;
m_dragEnd += trans;
} else {
KisPoint diag = event->pos() - (event->state() & TQt::ControlButton
? m_dragCenter : m_dragStart);
// circle?
if (event->state() & TQt::ShiftButton) {
double size = TQMAX(fabs(diag.x()), fabs(diag.y()));
double w = diag.x() < 0 ? -size : size;
double h = diag.y() < 0 ? -size : size;
diag = KisPoint(w, h);
}
// resize around center point?
if (event->state() & TQt::ControlButton) {
m_dragStart = m_dragCenter - diag;
m_dragEnd = m_dragCenter + diag;
} else {
m_dragEnd = m_dragStart + diag;
}
}
// draw new lines on canvas
draw(m_dragStart, m_dragEnd);
m_dragCenter = KisPoint((m_dragStart.x() + m_dragEnd.x()) / 2,
(m_dragStart.y() + m_dragEnd.y()) / 2);
}
}
void KisToolEllipse::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 ("Ellipse"));
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
painter.paintEllipse(m_dragStart, m_dragEnd, PRESSURE_DEFAULT/*event->pressure()*/, event->xTilt(), event->yTilt());
device->setDirty( painter.dirtyRect() );
notifyModified();
KisUndoAdapter *adapter = m_currentImage->undoAdapter();
if (adapter) {
adapter->addCommand(painter.endTransaction());
}
}
}
void KisToolEllipse::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);
p.setRasterOp (TQt::NotROP);
p.drawEllipse (TQRect (controller->windowToView (start).floorTQPoint(), controller->windowToView (end).floorTQPoint()));
p.end ();
}
void KisToolEllipse::setup(TDEActionCollection *collection)
{
m_action = static_cast<TDERadioAction *>(collection->action(name()));
if (m_action == 0) {
TDEShortcut shortcut(TQt::Key_Plus);
shortcut.append(TDEShortcut(TQt::Key_F7));
m_action = new TDERadioAction(i18n("&Ellipse"),
"tool_ellipse",
shortcut,
this,
TQT_SLOT(activate()),
collection,
name());
m_action->setToolTip(i18n("Draw an ellipse"));
m_action->setExclusiveGroup("tools");
m_ownAction = true;
}
}
#include "kis_tool_ellipse.moc"
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