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/*
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* Copyright (c) 1999 Matthias Elter <me@kde.org>
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* Copyright (c) 2002 Patrick Julien <freak@codepimps.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 <tdeaction.h>
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#include <klocale.h>
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#include <tdeapplication.h>
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#include "kis_image.h"
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#include "kis_paint_device.h"
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#include "kis_paint_layer.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_canvas.h"
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#include "kis_canvas_painter.h"
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#include "kis_cursor.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_tool_zoom.h"
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KisToolZoom::KisToolZoom()
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: super(i18n("Zoom Tool"))
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{
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setName("tool_zoom");
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m_subject = 0;
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m_dragging = false;
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m_startPos = TQPoint(0, 0);
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m_endPos = TQPoint(0, 0);
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m_plusCursor = KisCursor::load("tool_zoom_plus_cursor.png", 8, 8);
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m_minusCursor = KisCursor::load("tool_zoom_minus_cursor.png", 8, 8);
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setCursor(m_plusCursor);
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connect(&m_timer, TQT_SIGNAL(timeout()), TQT_SLOT(slotTimer()));
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}
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KisToolZoom::~KisToolZoom()
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{
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}
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void KisToolZoom::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 KisToolZoom::paint(KisCanvasPainter& gc)
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{
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if (m_dragging)
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paintOutline(gc, TQRect());
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}
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void KisToolZoom::paint(KisCanvasPainter& gc, const TQRect& rc)
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{
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if (m_dragging)
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paintOutline(gc, rc);
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}
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void KisToolZoom::buttonPress(KisButtonPressEvent *e)
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{
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if (m_subject && m_subject->currentImg() && !m_dragging) {
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if (e->button() == Qt::LeftButton) {
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m_startPos = e->pos().floorTQPoint();
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m_endPos = e->pos().floorTQPoint();
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m_dragging = true;
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}
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}
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}
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void KisToolZoom::move(KisMoveEvent *e)
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{
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if (m_subject && m_dragging) {
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if (m_startPos != m_endPos)
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paintOutline();
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m_endPos = e->pos().floorTQPoint();
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paintOutline();
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}
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}
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void KisToolZoom::buttonRelease(KisButtonReleaseEvent *e)
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{
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if (m_subject && m_dragging && e->button() == Qt::LeftButton) {
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KisCanvasController *controller = m_subject->canvasController();
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m_endPos = e->pos().floorTQPoint();
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m_dragging = false;
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TQPoint delta = m_endPos - m_startPos;
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if (sqrt(delta.x() * delta.x() + delta.y() * delta.y()) < 10) {
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if (e->state() & TQt::ControlButton) {
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controller->zoomOut(m_endPos.x(), m_endPos.y());
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} else {
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controller->zoomIn(m_endPos.x(), m_endPos.y());
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}
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} else {
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controller->zoomTo(TQRect(m_startPos, m_endPos));
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}
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}
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}
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void KisToolZoom::activate()
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{
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super::activate();
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m_timer.start(50);
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}
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void KisToolZoom::deactivate()
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{
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m_timer.stop();
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}
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void KisToolZoom::slotTimer()
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{
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#if KDE_IS_VERSION(3,4,0)
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int state = kapp->keyboardMouseState() & (TQt::ShiftButton|TQt::ControlButton|TQt::AltButton);
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#else
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int state = kapp->keyboardModifiers() & (TDEApplication::ShiftModifier
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|TDEApplication::ControlModifier|TDEApplication::Modifier1);
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#endif
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if (state & TQt::ControlButton) {
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m_subject->canvasController()->setCanvasCursor(m_minusCursor);
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} else {
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m_subject->canvasController()->setCanvasCursor(m_plusCursor);
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}
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}
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void KisToolZoom::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 KisToolZoom::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);
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end = controller->windowToView(m_endPos);
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gc.setRasterOp(TQt::NotROP);
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gc.setPen(pen);
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gc.drawRect(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 KisToolZoom::setup(TDEActionCollection *collection)
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{
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m_action = static_cast<TDERadioAction *>(collection->action(name()));
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if (m_action == 0) {
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m_action = new TDERadioAction(i18n("&Zoom"), "tool_zoom", TQt::Key_Z, this, TQT_SLOT(activate()), collection, name());
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m_action->setToolTip(i18n("Zoom"));
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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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#include "kis_tool_zoom.moc"
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