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322 lines
9.5 KiB
322 lines
9.5 KiB
/*
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* kis_tool_select_elliptical.cc -- part of Chalk
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*
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* Copyright (c) 2004 Boudewijn Rempt (boud@valdyas.org)
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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#include <tqapplication.h>
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#include <tqpainter.h>
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#include <tqpen.h>
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#include <tqlayout.h>
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#include <kdebug.h>
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#include <kaction.h>
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#include <kcommand.h>
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#include <klocale.h>
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#include "kis_autobrush_resource.h"
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#include "kis_canvas_controller.h"
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#include "kis_canvas_subject.h"
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#include "kis_cursor.h"
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#include "kis_image.h"
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#include "kis_painter.h"
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#include "kis_tool_select_elliptical.h"
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#include "kis_layer.h"
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#include "kis_undo_adapter.h"
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#include "kis_button_press_event.h"
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#include "kis_button_release_event.h"
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#include "kis_move_event.h"
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#include "kis_selection.h"
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#include "kis_selection_options.h"
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#include "kis_selected_transaction.h"
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#include "kis_canvas.h"
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#include "kis_canvas_painter.h"
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KisToolSelectElliptical::KisToolSelectElliptical()
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: super(i18n("Elliptical Select"))
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{
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setName("tool_select_elliptical");
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setCursor(KisCursor::load("tool_elliptical_selection_cursor.png", 6, 6));
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m_subject = 0;
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m_selecting = false;
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m_centerPos = KisPoint(0, 0);
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m_startPos = KisPoint(0, 0);
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m_endPos = KisPoint(0, 0);
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m_optWidget = 0;
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m_selectAction = SELECTION_ADD;
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}
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KisToolSelectElliptical::~KisToolSelectElliptical()
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{
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}
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void KisToolSelectElliptical::activate()
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{
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super::activate();
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if (!m_optWidget)
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return;
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m_optWidget->slotActivated();
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}
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void KisToolSelectElliptical::update(KisCanvasSubject *subject)
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{
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m_subject = subject;
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super::update(m_subject);
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}
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void KisToolSelectElliptical::paint(KisCanvasPainter& gc)
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{
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if (m_selecting)
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paintOutline(gc, TQRect());
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}
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void KisToolSelectElliptical::paint(KisCanvasPainter& gc, const TQRect& rc)
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{
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if (m_selecting)
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paintOutline(gc, rc);
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}
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void KisToolSelectElliptical::clearSelection()
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{
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if (m_subject) {
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KisCanvasController *controller = m_subject->canvasController();
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KisImageSP img = m_subject->currentImg();
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Q_ASSERT(controller);
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// if (img && img->floatingSelection().data() != 0) {
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// img->unsetFloatingSelection();
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// controller->canvas()->update();
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// }
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m_startPos = KisPoint(0, 0);
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m_endPos = KisPoint(0, 0);
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m_selecting = false;
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}
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}
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void KisToolSelectElliptical::buttonPress(KisButtonPressEvent *e)
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{
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if (m_subject) {
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KisImageSP img = m_subject->currentImg();
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if (img && img->activeDevice() && e->button() == Qt::LeftButton) {
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clearSelection();
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m_startPos = m_endPos = m_centerPos = e->pos();
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m_selecting = true;
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paintOutline();
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}
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}
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}
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void KisToolSelectElliptical::move(KisMoveEvent *e)
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{
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if (m_subject && m_selecting) {
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paintOutline();
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// move (alt) or resize ellipse
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if (e->state() & TQt::AltButton) {
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KisPoint trans = e->pos() - m_endPos;
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m_startPos += trans;
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m_endPos += trans;
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} else {
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KisPoint diag = e->pos() - (e->state() & TQt::ControlButton
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? m_centerPos : m_startPos);
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// circle?
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if (e->state() & TQt::ShiftButton) {
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double size = TQMAX(fabs(diag.x()), fabs(diag.y()));
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double w = diag.x() < 0 ? -size : size;
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double h = diag.y() < 0 ? -size : size;
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diag = KisPoint(w, h);
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}
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// resize around center point?
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if (e->state() & TQt::ControlButton) {
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m_startPos = m_centerPos - diag;
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m_endPos = m_centerPos + diag;
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} else {
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m_endPos = m_startPos + diag;
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}
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}
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paintOutline();
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m_centerPos = KisPoint((m_startPos.x() + m_endPos.x()) / 2,
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(m_startPos.y() + m_endPos.y()) / 2);
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}
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}
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void KisToolSelectElliptical::buttonRelease(KisButtonReleaseEvent *e)
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{
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if (m_subject && m_selecting && e->button() == Qt::LeftButton) {
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paintOutline();
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if (m_startPos == m_endPos) {
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clearSelection();
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} else {
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TQApplication::setOverrideCursor(KisCursor::waitCursor());
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KisImageSP img = m_subject->currentImg();
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if (!img)
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return;
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if (m_endPos.y() < 0)
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m_endPos.setY(0);
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if (m_endPos.y() > img->height())
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m_endPos.setY(img->height());
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if (m_endPos.x() < 0)
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m_endPos.setX(0);
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if (m_endPos.x() > img->width())
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m_endPos.setX(img->width());
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if (img && img->activeDevice()) {
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KisPaintDeviceSP dev = img->activeDevice();
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KisSelectedTransaction *t = 0;
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if (img->undo()) t = new KisSelectedTransaction(i18n("Elliptical Selection"), dev);
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bool hasSelection = dev->hasSelection();
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if(! hasSelection)
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{
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dev->selection()->clear();
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if(m_selectAction==SELECTION_SUBTRACT)
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dev->selection()->invert();
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}
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TQRect rc( m_startPos.floorTQPoint(), m_endPos.floorTQPoint());
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rc = rc.normalize();
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KisSelectionSP tmpSel = new KisSelection(dev);
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KisAutobrushCircleShape shape(rc.width(),rc.height(), 1, 1);
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TQ_UINT8 value;
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for (int y = 0; y <= rc.height(); y++)
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for (int x = 0; x <= rc.width(); x++)
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{
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value = MAX_SELECTED - shape.valueAt(x,y);
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tmpSel->setSelected( x+rc.x(), y+rc.y(), value);
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}
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switch(m_selectAction)
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{
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case SELECTION_ADD:
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dev->addSelection(tmpSel);
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break;
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case SELECTION_SUBTRACT:
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dev->subtractSelection(tmpSel);
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break;
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}
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if(hasSelection) {
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dev->setDirty(rc);
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dev->emitSelectionChanged(rc);
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} else {
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dev->setDirty();
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dev->emitSelectionChanged();
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}
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if (img->undo())
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img->undoAdapter()->addCommand(t);
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TQApplication::restoreOverrideCursor();
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}
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}
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m_selecting = false;
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}
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}
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void KisToolSelectElliptical::paintOutline()
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{
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if (m_subject) {
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KisCanvasController *controller = m_subject->canvasController();
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KisCanvas *canvas = controller->kiscanvas();
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KisCanvasPainter gc(canvas);
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TQRect rc;
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paintOutline(gc, rc);
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}
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}
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void KisToolSelectElliptical::paintOutline(KisCanvasPainter& gc, const TQRect&)
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{
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if (m_subject) {
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KisCanvasController *controller = m_subject->canvasController();
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RasterOp op = gc.rasterOp();
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TQPen old = gc.pen();
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TQPen pen(TQt::DotLine);
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TQPoint start;
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TQPoint end;
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Q_ASSERT(controller);
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start = controller->windowToView(m_startPos).floorTQPoint();
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end = controller->windowToView(m_endPos).floorTQPoint();
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gc.setRasterOp(TQt::NotROP);
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gc.setPen(pen);
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gc.drawEllipse(TQRect(start, end));
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gc.setRasterOp(op);
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gc.setPen(old);
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}
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}
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void KisToolSelectElliptical::slotSetAction(int action) {
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if (action >= SELECTION_ADD && action <= SELECTION_SUBTRACT)
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m_selectAction =(enumSelectionMode)action;
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}
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void KisToolSelectElliptical::setup(KActionCollection *collection)
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{
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m_action = static_cast<KRadioAction *>(collection->action(name()));
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if (m_action == 0) {
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m_action = new KRadioAction(i18n("&Elliptical Selection"),
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"tool_elliptical_selection" ,
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TQt::Key_J,
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this,
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TQT_SLOT(activate()),
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collection,
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name());
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TQ_CHECK_PTR(m_action);
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m_action->setToolTip(i18n("Select an elliptical area"));
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m_action->setExclusiveGroup("tools");
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m_ownAction = true;
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}
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}
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TQWidget* KisToolSelectElliptical::createOptionWidget(TQWidget* parent)
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{
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m_optWidget = new KisSelectionOptions(parent, m_subject);
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TQ_CHECK_PTR(m_optWidget);
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m_optWidget->setCaption(i18n("Elliptical Selection"));
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connect (m_optWidget, TQT_SIGNAL(actionChanged(int)), this, TQT_SLOT(slotSetAction(int)));
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TQVBoxLayout * l = dynamic_cast<TQVBoxLayout*>(m_optWidget->layout());
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l->addItem(new TQSpacerItem(1, 1, TQSizePolicy::Fixed, TQSizePolicy::Expanding));
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return m_optWidget;
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}
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TQWidget* KisToolSelectElliptical::optionWidget()
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{
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return m_optWidget;
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}
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#include "kis_tool_select_elliptical.moc"
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