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koffice/chalk/plugins/tools/selectiontools/kis_tool_select_polygonal.cc

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8.3 KiB

/*
* kis_tool_select_polygonal.h - part of Krayon^WChalk
*
* Copyright (c) 2000 John Califf <jcaliff@compuzone.net>
* Copyright (c) 2002 Patrick Julien <freak@codepimps.org>
* Copyright (c) 2004 Boudewijn Rempt <boud@valdyas.org>
*
* 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 <tqapplication.h>
#include <tqpainter.h>
#include <tqregion.h>
#include <tqwidget.h>
#include <tqlayout.h>
#include <tdeaction.h>
#include <kdebug.h>
#include <kcommand.h>
#include <tdelocale.h>
#include <kis_layer.h>
#include <kis_selection_options.h>
#include <kis_canvas_controller.h>
#include <kis_canvas_subject.h>
#include <kis_cursor.h>
#include <kis_image.h>
#include <kis_tool_select_polygonal.h>
#include <kis_vec.h>
#include <kis_undo_adapter.h>
#include <kis_button_press_event.h>
#include <kis_button_release_event.h>
#include <kis_move_event.h>
#include "kis_selected_transaction.h"
#include "kis_painter.h"
#include "kis_paintop_registry.h"
#include "kis_canvas.h"
#include "kis_canvas_painter.h"
KisToolSelectPolygonal::KisToolSelectPolygonal()
: super(i18n("Select Polygonal"))
{
setName("tool_select_polygonal");
setCursor(KisCursor::load("tool_polygonal_selection_cursor.png", 6, 6));
m_subject = 0;
m_dragging = false;
m_optWidget = 0;
m_selectAction = SELECTION_ADD;
}
KisToolSelectPolygonal::~KisToolSelectPolygonal()
{
}
void KisToolSelectPolygonal::activate()
{
m_points.clear();
super::activate();
if (!m_optWidget)
return;
m_optWidget->slotActivated();
}
void KisToolSelectPolygonal::deactivate()
{
draw();
m_points.clear();
m_dragging = false;
}
void KisToolSelectPolygonal::update (KisCanvasSubject *subject)
{
m_subject = subject;
super::update(m_subject);
}
void KisToolSelectPolygonal::buttonPress(KisButtonPressEvent *event)
{
if (event->button() == Qt::LeftButton) {
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() == ShiftButton) {
finish();
}
}
void KisToolSelectPolygonal::doubleClick( KisDoubleClickEvent * )
{
finish();
}
void KisToolSelectPolygonal::finish()
{
// erase old lines on canvas
draw();
m_dragging = false;
KisImageSP img = m_subject->currentImg();
if (img && img->activeDevice()) {
TQApplication::setOverrideCursor(KisCursor::waitCursor());
KisPaintDeviceSP dev = img->activeDevice();
bool hasSelection = dev->hasSelection();
KisSelectedTransaction *t = 0;
if (img->undo()) t = new KisSelectedTransaction(i18n("Polygonal Selection"), dev);
KisSelectionSP selection = dev->selection();
if (!hasSelection)
{
selection->clear();
}
KisPainter painter(selection.data());
painter.setPaintColor(KisColor(TQt::black, selection->colorSpace()));
painter.setFillStyle(KisPainter::FillStyleForegroundColor);
painter.setStrokeStyle(KisPainter::StrokeStyleNone);
painter.setBrush(m_subject->currentBrush());
painter.setOpacity(OPACITY_OPAQUE);
KisPaintOp * op = KisPaintOpRegistry::instance()->paintOp("paintbrush", 0, &painter);
painter.setPaintOp(op); // And now the painter owns the op and will destroy it.
switch(m_selectAction)
{
case SELECTION_ADD:
painter.setCompositeOp(COMPOSITE_OVER);
break;
case SELECTION_SUBTRACT:
painter.setCompositeOp(COMPOSITE_SUBTRACT);
break;
default:
break;
}
painter.paintPolygon(m_points);
if(hasSelection) {
TQRect rect(painter.dirtyRect());
dev->setDirty(rect);
dev->emitSelectionChanged(rect);
} else {
dev->setDirty();
dev->emitSelectionChanged();
}
if (img->undo()) img->undoAdapter()->addCommand(t);
TQApplication::restoreOverrideCursor();
}
m_points.clear();
}
void KisToolSelectPolygonal::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 KisToolSelectPolygonal::buttonRelease(KisButtonReleaseEvent *event)
{
if (!m_subject)
return;
if (m_dragging && event->button() == Qt::LeftButton) {
m_dragging = false;
m_points.append (m_dragEnd);
}
if (m_dragging && event->button() == Qt::RightButton) {
}
}
void KisToolSelectPolygonal::paint(KisCanvasPainter& gc)
{
draw(gc);
}
void KisToolSelectPolygonal::paint(KisCanvasPainter& gc, const TQRect&)
{
draw(gc);
}
void KisToolSelectPolygonal::draw()
{
if (m_subject) {
KisCanvasController *controller = m_subject->canvasController();
KisCanvas *canvas = controller->kiscanvas();
KisCanvasPainter gc(canvas);
draw(gc);
}
}
void KisToolSelectPolygonal::draw(KisCanvasPainter& gc)
{
if (!m_subject)
return;
TQPen pen(TQt::white, 0, TQt::DotLine);
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 KisToolSelectPolygonal::setup(TDEActionCollection *collection)
{
m_action = static_cast<TDERadioAction *>(collection->action(name()));
if (m_action == 0) {
m_action = new TDERadioAction(i18n("&Polygonal Selection"),
"tool_polygonal_selection" ,
0,
this,
TQT_SLOT(activate()),
collection,
name());
TQ_CHECK_PTR(m_action);
m_action->setExclusiveGroup("tools");
m_action->setToolTip(i18n("Select a polygonal area"));
m_ownAction = true;
}
}
TQWidget* KisToolSelectPolygonal::createOptionWidget(TQWidget* parent)
{
m_optWidget = new KisSelectionOptions(parent, m_subject);
TQ_CHECK_PTR(m_optWidget);
m_optWidget->setCaption(i18n("Polygonal Selection"));
connect (m_optWidget, TQT_SIGNAL(actionChanged(int)), this, TQT_SLOT(slotSetAction(int)));
TQVBoxLayout * l = dynamic_cast<TQVBoxLayout*>(m_optWidget->layout());
l->addItem(new TQSpacerItem(1, 1, TQSizePolicy::Fixed, TQSizePolicy::Expanding));
return m_optWidget;
}
TQWidget* KisToolSelectPolygonal::optionWidget()
{
return m_optWidget;
}
void KisToolSelectPolygonal::slotSetAction(int action) {
if (action >= SELECTION_ADD && action <= SELECTION_SUBTRACT)
m_selectAction =(enumSelectionMode)action;
}
#include "kis_tool_select_polygonal.moc"