QTfrontend/drawmapscene.cpp
author Wuzzy <Wuzzy2@mail.ru>
Wed, 26 Sep 2018 20:45:55 +0200
changeset 13813 5c6052351991
parent 13241 ef1393c6bd12
child 13915 6c8d4e140f27
permissions -rw-r--r--
On victory, center camera on a winning hedgehog
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/*
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 * Hedgewars, a free turn based strategy game
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 * Copyright (c) 2004-2015 Andrey Korotaev <unC0Rr@gmail.com>
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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; version 2 of the License
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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 St, Fifth Floor, Boston, MA  02110-1301  USA
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 */
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#include <QGraphicsSceneMouseEvent>
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#include <QGraphicsPathItem>
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#include <QtEndian>
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#include <QDebug>
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#include <QTransform>
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#include <math.h>
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#include "drawmapscene.h"
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#define DRAWN_MAP_COLOR_LAND (Qt::yellow)
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#define DRAWN_MAP_COLOR_CURSOR_PEN (Qt::green)
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#define DRAWN_MAP_COLOR_CURSOR_ERASER (Qt::red)
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template <class T> T sqr(const T & x)
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{
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    return x*x;
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}
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DrawMapScene::DrawMapScene(QObject *parent) :
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    QGraphicsScene(parent),
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    m_pen(DRAWN_MAP_COLOR_LAND),
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    m_brush(DRAWN_MAP_COLOR_LAND),
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    m_cursor(new QGraphicsEllipseItem(-5, -5, 5, 5))
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{
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    setSceneRect(0, 0, 4096, 2048);
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    QLinearGradient gradient(0, 0, 0, 2048);
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    gradient.setColorAt(0, QColor(60, 60, 155));
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    gradient.setColorAt(1, QColor(155, 155, 60));
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    m_eraser = QBrush(gradient);
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    setBackgroundBrush(m_eraser);
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    m_isErasing = false;
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    m_pathType = Polyline;
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    m_pen.setWidth(DRAWN_MAP_BRUSH_SIZE_START);
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    m_pen.setJoinStyle(Qt::RoundJoin);
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    m_pen.setCapStyle(Qt::RoundCap);
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    m_currPath = 0;
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    m_isCursorShown = false;
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    QPen cursorPen = QPen(DRAWN_MAP_COLOR_CURSOR_PEN);
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    cursorPen.setJoinStyle(Qt::RoundJoin);
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    cursorPen.setCapStyle(Qt::RoundCap);
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    cursorPen.setWidth(brushSize());
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    m_cursor->setPen(cursorPen);
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    m_cursor->setZValue(1);
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}
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void DrawMapScene::mouseMoveEvent(QGraphicsSceneMouseEvent * mouseEvent)
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{
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    if(m_currPath && (mouseEvent->buttons() & Qt::LeftButton))
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    {
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        QPainterPath path = m_currPath->path();
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        QPointF currentPos = mouseEvent->scenePos();
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        if(mouseEvent->modifiers() & Qt::ControlModifier)
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            currentPos = putSomeConstraints(paths.first().initialPoint, currentPos);
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        switch (m_pathType)
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        {
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        case Polyline:
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            if(mouseEvent->modifiers() & Qt::ControlModifier)
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            {
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                int c = path.elementCount();
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                path.setElementPositionAt(c - 1, currentPos.x(), currentPos.y());
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            }
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            else
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            {
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                path.lineTo(currentPos);
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                paths.first().points.append(mouseEvent->scenePos().toPoint());
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            }
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            break;
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        case Rectangle: {
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            path = QPainterPath();
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            QPointF p1 = paths.first().initialPoint;
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            QPointF p2 = currentPos;
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            path.moveTo(p1);
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            path.lineTo(p1.x(), p2.y());
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            path.lineTo(p2);
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            path.lineTo(p2.x(), p1.y());
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            path.lineTo(p1);
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            break;
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            }
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        case Ellipse: {
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            path = QPainterPath();
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            QList<QPointF> points = makeEllipse(paths.first().initialPoint, currentPos);
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            path.addPolygon(QPolygonF(QVector<QPointF>::fromList(points)));
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            break;
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        }
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        }
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        m_currPath->setPath(path);
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        emit pathChanged();
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    }
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    if(!m_isCursorShown)
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        showCursor();
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    m_cursor->setPos(mouseEvent->scenePos());
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}
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void DrawMapScene::mousePressEvent(QGraphicsSceneMouseEvent * mouseEvent)
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{
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    m_currPath = addPath(QPainterPath(), m_pen);
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    QPainterPath path = m_currPath->path();
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    QPointF p = mouseEvent->scenePos();
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    p += QPointF(0.01, 0.01);
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    path.moveTo(p);
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    path.lineTo(mouseEvent->scenePos());
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    PathParams params;
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    params.width = serializePenWidth(brushSize());
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    params.erasing = m_isErasing;
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    params.initialPoint = mouseEvent->scenePos().toPoint();
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    params.points = QList<QPoint>() << params.initialPoint;
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    paths.prepend(params);
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    m_currPath->setPath(path);
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    emit pathChanged();
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}
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void DrawMapScene::mouseReleaseEvent(QGraphicsSceneMouseEvent * mouseEvent)
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{
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    if (m_currPath)
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    {
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        QPointF currentPos = mouseEvent->scenePos();
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        if(mouseEvent->modifiers() & Qt::ControlModifier)
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            currentPos = putSomeConstraints(paths.first().initialPoint, currentPos);
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        switch (m_pathType)
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        {
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        case Polyline: {
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            QPainterPath path = m_currPath->path();
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            path.lineTo(mouseEvent->scenePos());
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            paths.first().points.append(currentPos.toPoint());
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            m_currPath->setPath(path);
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            simplifyLast();
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            break;
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        }
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        case Rectangle: {
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            QPoint p1 = paths.first().initialPoint;
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            QPoint p2 = currentPos.toPoint();
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            QList<QPoint> rpoints;
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            rpoints << p1 << QPoint(p1.x(), p2.y()) << p2 << QPoint(p2.x(), p1.y()) << p1;
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            paths.first().points = rpoints;
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            break;
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        }
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        case Ellipse:
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            QPoint p1 = paths.first().initialPoint;
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            QPoint p2 = currentPos.toPoint();
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            QList<QPointF> points = makeEllipse(p1, p2);
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            QList<QPoint> epoints;
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            foreach(const QPointF & p, points)
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                epoints.append(p.toPoint());
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            paths.first().points = epoints;
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            break;
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        }
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        m_currPath = 0;
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        emit pathChanged();
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    }
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}
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void DrawMapScene::setBrushSize(int newBrushSize)
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{
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    if(newBrushSize > DRAWN_MAP_BRUSH_SIZE_MAX)
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        newBrushSize = DRAWN_MAP_BRUSH_SIZE_MAX;
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    if(newBrushSize < DRAWN_MAP_BRUSH_SIZE_MIN)
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        newBrushSize = DRAWN_MAP_BRUSH_SIZE_MIN;
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    m_pen.setWidth(newBrushSize);
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    QPen cursorPen = m_cursor->pen();
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    cursorPen.setWidth(m_pen.width());
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    m_cursor->setPen(cursorPen);
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    if(m_currPath)
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    {
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        m_currPath->setPen(m_pen);
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        paths.first().width = serializePenWidth(m_pen.width());
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    }
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    emit brushSizeChanged(newBrushSize);
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}
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int DrawMapScene::brushSize()
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{
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    return m_pen.width();
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}
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void DrawMapScene::wheelEvent(QGraphicsSceneWheelEvent * wheelEvent)
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{
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    int b = brushSize();
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    if(wheelEvent->delta() > 0)
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        setBrushSize(b + DRAWN_MAP_BRUSH_SIZE_STEP);
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    else if(wheelEvent->delta() < 0 && b >= DRAWN_MAP_BRUSH_SIZE_MIN)
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        setBrushSize(b - DRAWN_MAP_BRUSH_SIZE_STEP);
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}
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void DrawMapScene::showCursor()
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{
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    if(!m_isCursorShown)
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        addItem(m_cursor);
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    m_isCursorShown = true;
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}
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void DrawMapScene::hideCursor()
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{
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    if(m_isCursorShown)
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        removeItem(m_cursor);
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    m_isCursorShown = false;
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}
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void DrawMapScene::undo()
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{
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    // cursor is a part of items()
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    if(m_isCursorShown)
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        return;
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    if(paths.size())
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    {
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        removeItem(items().first());
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        paths.removeFirst();
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        emit pathChanged();
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    }
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    else if(oldItems.size())
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    {
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        while(oldItems.size())
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            addItem(oldItems.takeFirst());
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        paths = oldPaths;
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        emit pathChanged();
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   258
    }
4424
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}
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void DrawMapScene::clearMap()
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{
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    // cursor is a part of items()
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    if(m_isCursorShown)
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        return;
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   266
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    // don't clear if already cleared
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   268
    if(!items().size())
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        return;
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    m_specialPoints.clear();
5858
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    oldItems.clear();
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    // do this since clear() would _destroy_ all items
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265e5997580e Incomplete implementation of 'special points' in drawn maps (crashes engine)
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    for(int i = paths.size() - 1; i >= 0; --i)
6616
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nemo
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    {
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        oldItems.push_front(items().first());
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        removeItem(items().first());
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   279
    }
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14ad1ac00ac9 Modify Racer script so it could work with special points
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   281
    items().clear();
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    oldPaths = paths;
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5d6c7f88db73 - Some work on drawMap widget and scene to allow undo, clear, save and load operations
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    paths.clear();
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   286
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    emit pathChanged();
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   288
}
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   289
6873
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   290
30840365af0a Eraser tool
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   291
void DrawMapScene::setErasing(bool erasing)
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   292
{
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   293
    m_isErasing = erasing;
13209
9565569e410c Drawn map page: Enable antialiasing, turn eraser cursor red
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diff changeset
   294
    QPen cursorPen = m_cursor->pen();
9565569e410c Drawn map page: Enable antialiasing, turn eraser cursor red
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diff changeset
   295
    if(erasing) {
6873
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   296
        m_pen.setBrush(m_eraser);
13209
9565569e410c Drawn map page: Enable antialiasing, turn eraser cursor red
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   297
        cursorPen.setColor(DRAWN_MAP_COLOR_CURSOR_ERASER);
9565569e410c Drawn map page: Enable antialiasing, turn eraser cursor red
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   298
    } else {
6873
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   299
        m_pen.setBrush(m_brush);
13209
9565569e410c Drawn map page: Enable antialiasing, turn eraser cursor red
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   300
        cursorPen.setColor(DRAWN_MAP_COLOR_CURSOR_PEN);
9565569e410c Drawn map page: Enable antialiasing, turn eraser cursor red
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diff changeset
   301
    }
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   302
    m_cursor->setPen(cursorPen);
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   303
}
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   304
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QByteArray DrawMapScene::encode()
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   306
{
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265e5997580e Incomplete implementation of 'special points' in drawn maps (crashes engine)
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   307
    QByteArray b(m_specialPoints);
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   308
4666
34551d8639cf - Fix encoding function to iterate reversed list
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   309
    for(int i = paths.size() - 1; i >= 0; --i)
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    {
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   311
        int cnt = 0;
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   312
        PathParams params = paths.at(i);
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   313
        foreach(QPoint point, params.points)
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   314
        {
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   315
            qint16 px = qToBigEndian((qint16)point.x());
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   316
            qint16 py = qToBigEndian((qint16)point.y());
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23f627ba8ee9 Variable pen width
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   317
            quint8 flags = 0;
7298
a5f2fa95e711 Don't set erasing flag when it is unnecessary so hwmap could compress better
unc0rr
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   318
            if(!cnt)
a5f2fa95e711 Don't set erasing flag when it is unnecessary so hwmap could compress better
unc0rr
parents: 7146
diff changeset
   319
            {
a5f2fa95e711 Don't set erasing flag when it is unnecessary so hwmap could compress better
unc0rr
parents: 7146
diff changeset
   320
                flags = 0x80 + params.width;
a5f2fa95e711 Don't set erasing flag when it is unnecessary so hwmap could compress better
unc0rr
parents: 7146
diff changeset
   321
                if(params.erasing) flags |= 0x40;
a5f2fa95e711 Don't set erasing flag when it is unnecessary so hwmap could compress better
unc0rr
parents: 7146
diff changeset
   322
            }
4427
c5193713055f Basic encoding of drawn map
unc0rr
parents: 4426
diff changeset
   323
            b.append((const char *)&px, 2);
c5193713055f Basic encoding of drawn map
unc0rr
parents: 4426
diff changeset
   324
            b.append((const char *)&py, 2);
4457
ffb766e85150 - Change painted map file format
unc0rr
parents: 4442
diff changeset
   325
            b.append((const char *)&flags, 1);
4427
c5193713055f Basic encoding of drawn map
unc0rr
parents: 4426
diff changeset
   326
c5193713055f Basic encoding of drawn map
unc0rr
parents: 4426
diff changeset
   327
            ++cnt;
c5193713055f Basic encoding of drawn map
unc0rr
parents: 4426
diff changeset
   328
        }
c5193713055f Basic encoding of drawn map
unc0rr
parents: 4426
diff changeset
   329
c5193713055f Basic encoding of drawn map
unc0rr
parents: 4426
diff changeset
   330
    }
c5193713055f Basic encoding of drawn map
unc0rr
parents: 4426
diff changeset
   331
c5193713055f Basic encoding of drawn map
unc0rr
parents: 4426
diff changeset
   332
    return b;
c5193713055f Basic encoding of drawn map
unc0rr
parents: 4426
diff changeset
   333
}
4434
34c305fbc63c Simple simplify() function
unc0rr
parents: 4427
diff changeset
   334
4442
f8424e1bc936 - Implement decode() function.
unc0rr
parents: 4439
diff changeset
   335
void DrawMapScene::decode(QByteArray data)
f8424e1bc936 - Implement decode() function.
unc0rr
parents: 4439
diff changeset
   336
{
10235
bafca1686867 Drawn maps optimizer - first steps:
unc0rr
parents: 10223
diff changeset
   337
    hideCursor();
bafca1686867 Drawn maps optimizer - first steps:
unc0rr
parents: 10223
diff changeset
   338
13241
ef1393c6bd12 Draw map page: Fix pen size being changed after loading a map
Wuzzy <Wuzzy2@mail.ru>
parents: 13214
diff changeset
   339
    // Remember erasing mode
6873
30840365af0a Eraser tool
unc0rr
parents: 6784
diff changeset
   340
    bool erasing = m_isErasing;
30840365af0a Eraser tool
unc0rr
parents: 6784
diff changeset
   341
13241
ef1393c6bd12 Draw map page: Fix pen size being changed after loading a map
Wuzzy <Wuzzy2@mail.ru>
parents: 13214
diff changeset
   342
    // Use seperate for decoding the map, don't mess with the user pen
ef1393c6bd12 Draw map page: Fix pen size being changed after loading a map
Wuzzy <Wuzzy2@mail.ru>
parents: 13214
diff changeset
   343
    QPen load_pen = QPen(m_pen);
ef1393c6bd12 Draw map page: Fix pen size being changed after loading a map
Wuzzy <Wuzzy2@mail.ru>
parents: 13214
diff changeset
   344
5858
1f4a8cf9efcb hand drawn map editor: allow "undo" after "clear"
sheepluva
parents: 5108
diff changeset
   345
    oldItems.clear();
1f4a8cf9efcb hand drawn map editor: allow "undo" after "clear"
sheepluva
parents: 5108
diff changeset
   346
    oldPaths.clear();
4442
f8424e1bc936 - Implement decode() function.
unc0rr
parents: 4439
diff changeset
   347
    clear();
f8424e1bc936 - Implement decode() function.
unc0rr
parents: 4439
diff changeset
   348
    paths.clear();
9472
265e5997580e Incomplete implementation of 'special points' in drawn maps (crashes engine)
unc0rr
parents: 9080
diff changeset
   349
    m_specialPoints.clear();
4442
f8424e1bc936 - Implement decode() function.
unc0rr
parents: 4439
diff changeset
   350
6873
30840365af0a Eraser tool
unc0rr
parents: 6784
diff changeset
   351
    PathParams params;
4442
f8424e1bc936 - Implement decode() function.
unc0rr
parents: 4439
diff changeset
   352
9472
265e5997580e Incomplete implementation of 'special points' in drawn maps (crashes engine)
unc0rr
parents: 9080
diff changeset
   353
    bool isSpecial = true;
265e5997580e Incomplete implementation of 'special points' in drawn maps (crashes engine)
unc0rr
parents: 9080
diff changeset
   354
4442
f8424e1bc936 - Implement decode() function.
unc0rr
parents: 4439
diff changeset
   355
    while(data.size() >= 5)
f8424e1bc936 - Implement decode() function.
unc0rr
parents: 4439
diff changeset
   356
    {
f8424e1bc936 - Implement decode() function.
unc0rr
parents: 4439
diff changeset
   357
        qint16 px = qFromBigEndian(*(qint16 *)data.data());
f8424e1bc936 - Implement decode() function.
unc0rr
parents: 4439
diff changeset
   358
        data.remove(0, 2);
f8424e1bc936 - Implement decode() function.
unc0rr
parents: 4439
diff changeset
   359
        qint16 py = qFromBigEndian(*(qint16 *)data.data());
f8424e1bc936 - Implement decode() function.
unc0rr
parents: 4439
diff changeset
   360
        data.remove(0, 2);
4457
ffb766e85150 - Change painted map file format
unc0rr
parents: 4442
diff changeset
   361
        quint8 flags = *(quint8 *)data.data();
ffb766e85150 - Change painted map file format
unc0rr
parents: 4442
diff changeset
   362
        data.remove(0, 1);
10235
bafca1686867 Drawn maps optimizer - first steps:
unc0rr
parents: 10223
diff changeset
   363
        //qDebug() << px << py;
6781
23f627ba8ee9 Variable pen width
unc0rr
parents: 6700
diff changeset
   364
        if(flags & 0x80)
4442
f8424e1bc936 - Implement decode() function.
unc0rr
parents: 4439
diff changeset
   365
        {
9472
265e5997580e Incomplete implementation of 'special points' in drawn maps (crashes engine)
unc0rr
parents: 9080
diff changeset
   366
            isSpecial = false;
265e5997580e Incomplete implementation of 'special points' in drawn maps (crashes engine)
unc0rr
parents: 9080
diff changeset
   367
6873
30840365af0a Eraser tool
unc0rr
parents: 6784
diff changeset
   368
            if(params.points.size())
6781
23f627ba8ee9 Variable pen width
unc0rr
parents: 6700
diff changeset
   369
            {
13241
ef1393c6bd12 Draw map page: Fix pen size being changed after loading a map
Wuzzy <Wuzzy2@mail.ru>
parents: 13214
diff changeset
   370
                addPath(pointsToPath(params.points), load_pen);
6781
23f627ba8ee9 Variable pen width
unc0rr
parents: 6700
diff changeset
   371
6873
30840365af0a Eraser tool
unc0rr
parents: 6784
diff changeset
   372
                paths.prepend(params);
4666
34551d8639cf - Fix encoding function to iterate reversed list
unc0rr
parents: 4658
diff changeset
   373
6873
30840365af0a Eraser tool
unc0rr
parents: 6784
diff changeset
   374
                params.points.clear();
6781
23f627ba8ee9 Variable pen width
unc0rr
parents: 6700
diff changeset
   375
            }
23f627ba8ee9 Variable pen width
unc0rr
parents: 6700
diff changeset
   376
6873
30840365af0a Eraser tool
unc0rr
parents: 6784
diff changeset
   377
            quint8 penWidth = flags & 0x3f;
13241
ef1393c6bd12 Draw map page: Fix pen size being changed after loading a map
Wuzzy <Wuzzy2@mail.ru>
parents: 13214
diff changeset
   378
            load_pen.setWidth(deserializePenWidth(penWidth));
7146
a822413207c9 Oops, forgot to set 'erasing' flag on decoding
unc0rr
parents: 6952
diff changeset
   379
            params.erasing = flags & 0x40;
a822413207c9 Oops, forgot to set 'erasing' flag on decoding
unc0rr
parents: 6952
diff changeset
   380
            if(params.erasing)
13241
ef1393c6bd12 Draw map page: Fix pen size being changed after loading a map
Wuzzy <Wuzzy2@mail.ru>
parents: 13214
diff changeset
   381
                load_pen.setBrush(m_eraser);
6873
30840365af0a Eraser tool
unc0rr
parents: 6784
diff changeset
   382
            else
13241
ef1393c6bd12 Draw map page: Fix pen size being changed after loading a map
Wuzzy <Wuzzy2@mail.ru>
parents: 13214
diff changeset
   383
                load_pen.setBrush(m_brush);
6873
30840365af0a Eraser tool
unc0rr
parents: 6784
diff changeset
   384
            params.width = penWidth;
9472
265e5997580e Incomplete implementation of 'special points' in drawn maps (crashes engine)
unc0rr
parents: 9080
diff changeset
   385
        } else
265e5997580e Incomplete implementation of 'special points' in drawn maps (crashes engine)
unc0rr
parents: 9080
diff changeset
   386
            if(isSpecial)
265e5997580e Incomplete implementation of 'special points' in drawn maps (crashes engine)
unc0rr
parents: 9080
diff changeset
   387
            {
265e5997580e Incomplete implementation of 'special points' in drawn maps (crashes engine)
unc0rr
parents: 9080
diff changeset
   388
                QPainterPath path;
265e5997580e Incomplete implementation of 'special points' in drawn maps (crashes engine)
unc0rr
parents: 9080
diff changeset
   389
                path.addEllipse(QPointF(px, py), 10, 10);
265e5997580e Incomplete implementation of 'special points' in drawn maps (crashes engine)
unc0rr
parents: 9080
diff changeset
   390
265e5997580e Incomplete implementation of 'special points' in drawn maps (crashes engine)
unc0rr
parents: 9080
diff changeset
   391
                addPath(path);
4442
f8424e1bc936 - Implement decode() function.
unc0rr
parents: 4439
diff changeset
   392
9472
265e5997580e Incomplete implementation of 'special points' in drawn maps (crashes engine)
unc0rr
parents: 9080
diff changeset
   393
                qint16 x = qToBigEndian(px);
265e5997580e Incomplete implementation of 'special points' in drawn maps (crashes engine)
unc0rr
parents: 9080
diff changeset
   394
                qint16 y = qToBigEndian(py);
265e5997580e Incomplete implementation of 'special points' in drawn maps (crashes engine)
unc0rr
parents: 9080
diff changeset
   395
                m_specialPoints.append((const char *)&x, 2);
265e5997580e Incomplete implementation of 'special points' in drawn maps (crashes engine)
unc0rr
parents: 9080
diff changeset
   396
                m_specialPoints.append((const char *)&y, 2);
265e5997580e Incomplete implementation of 'special points' in drawn maps (crashes engine)
unc0rr
parents: 9080
diff changeset
   397
                m_specialPoints.append((const char *)&flags, 1);
265e5997580e Incomplete implementation of 'special points' in drawn maps (crashes engine)
unc0rr
parents: 9080
diff changeset
   398
            }
265e5997580e Incomplete implementation of 'special points' in drawn maps (crashes engine)
unc0rr
parents: 9080
diff changeset
   399
265e5997580e Incomplete implementation of 'special points' in drawn maps (crashes engine)
unc0rr
parents: 9080
diff changeset
   400
        if(!isSpecial)
265e5997580e Incomplete implementation of 'special points' in drawn maps (crashes engine)
unc0rr
parents: 9080
diff changeset
   401
            params.points.append(QPoint(px, py));
4666
34551d8639cf - Fix encoding function to iterate reversed list
unc0rr
parents: 4658
diff changeset
   402
    }
34551d8639cf - Fix encoding function to iterate reversed list
unc0rr
parents: 4658
diff changeset
   403
6873
30840365af0a Eraser tool
unc0rr
parents: 6784
diff changeset
   404
    if(params.points.size())
4666
34551d8639cf - Fix encoding function to iterate reversed list
unc0rr
parents: 4658
diff changeset
   405
    {
13241
ef1393c6bd12 Draw map page: Fix pen size being changed after loading a map
Wuzzy <Wuzzy2@mail.ru>
parents: 13214
diff changeset
   406
        addPath(pointsToPath(params.points), load_pen);
6873
30840365af0a Eraser tool
unc0rr
parents: 6784
diff changeset
   407
        paths.prepend(params);
4442
f8424e1bc936 - Implement decode() function.
unc0rr
parents: 4439
diff changeset
   408
    }
4560
5d6c7f88db73 - Some work on drawMap widget and scene to allow undo, clear, save and load operations
unc0rr
parents: 4520
diff changeset
   409
5d6c7f88db73 - Some work on drawMap widget and scene to allow undo, clear, save and load operations
unc0rr
parents: 4520
diff changeset
   410
    emit pathChanged();
6873
30840365af0a Eraser tool
unc0rr
parents: 6784
diff changeset
   411
13241
ef1393c6bd12 Draw map page: Fix pen size being changed after loading a map
Wuzzy <Wuzzy2@mail.ru>
parents: 13214
diff changeset
   412
    // Restore erasing mode
6873
30840365af0a Eraser tool
unc0rr
parents: 6784
diff changeset
   413
    setErasing(erasing);
4442
f8424e1bc936 - Implement decode() function.
unc0rr
parents: 4439
diff changeset
   414
}
f8424e1bc936 - Implement decode() function.
unc0rr
parents: 4439
diff changeset
   415
4439
27a896207aae Some more improvements
unC0Rr
parents: 4434
diff changeset
   416
void DrawMapScene::simplifyLast()
4434
34c305fbc63c Simple simplify() function
unc0rr
parents: 4427
diff changeset
   417
{
4560
5d6c7f88db73 - Some work on drawMap widget and scene to allow undo, clear, save and load operations
unc0rr
parents: 4520
diff changeset
   418
    if(!paths.size()) return;
5d6c7f88db73 - Some work on drawMap widget and scene to allow undo, clear, save and load operations
unc0rr
parents: 4520
diff changeset
   419
6873
30840365af0a Eraser tool
unc0rr
parents: 6784
diff changeset
   420
    QList<QPoint> points = paths.at(0).points;
4439
27a896207aae Some more improvements
unC0Rr
parents: 4434
diff changeset
   421
27a896207aae Some more improvements
unC0Rr
parents: 4434
diff changeset
   422
    QPoint prevPoint = points.first();
27a896207aae Some more improvements
unC0Rr
parents: 4434
diff changeset
   423
    int i = 1;
27a896207aae Some more improvements
unC0Rr
parents: 4434
diff changeset
   424
    while(i < points.size())
4434
34c305fbc63c Simple simplify() function
unc0rr
parents: 4427
diff changeset
   425
    {
10223
b6b98dfa3807 Optimize out path closing point for one point paths
unc0rr
parents: 10108
diff changeset
   426
        if( ((i != points.size() - 1) || (prevPoint == points[i]))
6616
f77bb02b669f astyle -C -S -L -N --style=allman --recursive "QTfrontend/*.cpp" "QTfrontend/*.h"
nemo
parents: 5858
diff changeset
   427
                && (sqr(prevPoint.x() - points[i].x()) + sqr(prevPoint.y() - points[i].y()) < 1000)
4471
220d44cb8659 Always keep last point of drawn polyline
unc0rr
parents: 4457
diff changeset
   428
          )
4439
27a896207aae Some more improvements
unC0Rr
parents: 4434
diff changeset
   429
            points.removeAt(i);
27a896207aae Some more improvements
unC0Rr
parents: 4434
diff changeset
   430
        else
27a896207aae Some more improvements
unC0Rr
parents: 4434
diff changeset
   431
        {
27a896207aae Some more improvements
unC0Rr
parents: 4434
diff changeset
   432
            prevPoint = points[i];
27a896207aae Some more improvements
unC0Rr
parents: 4434
diff changeset
   433
            ++i;
27a896207aae Some more improvements
unC0Rr
parents: 4434
diff changeset
   434
        }
27a896207aae Some more improvements
unC0Rr
parents: 4434
diff changeset
   435
    }
4434
34c305fbc63c Simple simplify() function
unc0rr
parents: 4427
diff changeset
   436
6873
30840365af0a Eraser tool
unc0rr
parents: 6784
diff changeset
   437
    paths[0].points = points;
4439
27a896207aae Some more improvements
unC0Rr
parents: 4434
diff changeset
   438
27a896207aae Some more improvements
unC0Rr
parents: 4434
diff changeset
   439
27a896207aae Some more improvements
unC0Rr
parents: 4434
diff changeset
   440
    // redraw path
27a896207aae Some more improvements
unC0Rr
parents: 4434
diff changeset
   441
    {
6934
14a230552c2e Cursor for DrawMapScene. Feel free to ajust its look.
unc0rr
parents: 6873
diff changeset
   442
        QGraphicsPathItem * pathItem = static_cast<QGraphicsPathItem *>(items()[m_isCursorShown ? 1 : 0]);
6873
30840365af0a Eraser tool
unc0rr
parents: 6784
diff changeset
   443
        pathItem->setPath(pointsToPath(paths[0].points));
4434
34c305fbc63c Simple simplify() function
unc0rr
parents: 4427
diff changeset
   444
    }
34c305fbc63c Simple simplify() function
unc0rr
parents: 4427
diff changeset
   445
}
4442
f8424e1bc936 - Implement decode() function.
unc0rr
parents: 4439
diff changeset
   446
6935
472ed92c4173 Show number of points in drawn map
unc0rr
parents: 6934
diff changeset
   447
int DrawMapScene::pointsCount()
472ed92c4173 Show number of points in drawn map
unc0rr
parents: 6934
diff changeset
   448
{
472ed92c4173 Show number of points in drawn map
unc0rr
parents: 6934
diff changeset
   449
    int cnt = 0;
472ed92c4173 Show number of points in drawn map
unc0rr
parents: 6934
diff changeset
   450
    foreach(PathParams p, paths)
472ed92c4173 Show number of points in drawn map
unc0rr
parents: 6934
diff changeset
   451
        cnt += p.points.size();
472ed92c4173 Show number of points in drawn map
unc0rr
parents: 6934
diff changeset
   452
472ed92c4173 Show number of points in drawn map
unc0rr
parents: 6934
diff changeset
   453
    return cnt;
472ed92c4173 Show number of points in drawn map
unc0rr
parents: 6934
diff changeset
   454
}
472ed92c4173 Show number of points in drawn map
unc0rr
parents: 6934
diff changeset
   455
4442
f8424e1bc936 - Implement decode() function.
unc0rr
parents: 4439
diff changeset
   456
QPainterPath DrawMapScene::pointsToPath(const QList<QPoint> points)
f8424e1bc936 - Implement decode() function.
unc0rr
parents: 4439
diff changeset
   457
{
f8424e1bc936 - Implement decode() function.
unc0rr
parents: 4439
diff changeset
   458
    QPainterPath path;
f8424e1bc936 - Implement decode() function.
unc0rr
parents: 4439
diff changeset
   459
f8424e1bc936 - Implement decode() function.
unc0rr
parents: 4439
diff changeset
   460
    if(points.size())
f8424e1bc936 - Implement decode() function.
unc0rr
parents: 4439
diff changeset
   461
    {
f8424e1bc936 - Implement decode() function.
unc0rr
parents: 4439
diff changeset
   462
        QPointF p = points[0] + QPointF(0.01, 0.01);
f8424e1bc936 - Implement decode() function.
unc0rr
parents: 4439
diff changeset
   463
        path.moveTo(p);
f8424e1bc936 - Implement decode() function.
unc0rr
parents: 4439
diff changeset
   464
f8424e1bc936 - Implement decode() function.
unc0rr
parents: 4439
diff changeset
   465
        foreach(QPoint p, points)
6616
f77bb02b669f astyle -C -S -L -N --style=allman --recursive "QTfrontend/*.cpp" "QTfrontend/*.h"
nemo
parents: 5858
diff changeset
   466
        path.lineTo(p);
4442
f8424e1bc936 - Implement decode() function.
unc0rr
parents: 4439
diff changeset
   467
    }
f8424e1bc936 - Implement decode() function.
unc0rr
parents: 4439
diff changeset
   468
f8424e1bc936 - Implement decode() function.
unc0rr
parents: 4439
diff changeset
   469
    return path;
f8424e1bc936 - Implement decode() function.
unc0rr
parents: 4439
diff changeset
   470
}
6781
23f627ba8ee9 Variable pen width
unc0rr
parents: 6700
diff changeset
   471
23f627ba8ee9 Variable pen width
unc0rr
parents: 6700
diff changeset
   472
quint8 DrawMapScene::serializePenWidth(int width)
23f627ba8ee9 Variable pen width
unc0rr
parents: 6700
diff changeset
   473
{
23f627ba8ee9 Variable pen width
unc0rr
parents: 6700
diff changeset
   474
    return (width - 6) / 10;
23f627ba8ee9 Variable pen width
unc0rr
parents: 6700
diff changeset
   475
}
23f627ba8ee9 Variable pen width
unc0rr
parents: 6700
diff changeset
   476
23f627ba8ee9 Variable pen width
unc0rr
parents: 6700
diff changeset
   477
int DrawMapScene::deserializePenWidth(quint8 width)
23f627ba8ee9 Variable pen width
unc0rr
parents: 6700
diff changeset
   478
{
23f627ba8ee9 Variable pen width
unc0rr
parents: 6700
diff changeset
   479
    return width * 10 + 6;
23f627ba8ee9 Variable pen width
unc0rr
parents: 6700
diff changeset
   480
}
9551
61f160dfd0f1 Draw rectangles and ellipses!
unc0rr
parents: 9483
diff changeset
   481
61f160dfd0f1 Draw rectangles and ellipses!
unc0rr
parents: 9483
diff changeset
   482
void DrawMapScene::setPathType(PathType pathType)
61f160dfd0f1 Draw rectangles and ellipses!
unc0rr
parents: 9483
diff changeset
   483
{
61f160dfd0f1 Draw rectangles and ellipses!
unc0rr
parents: 9483
diff changeset
   484
    m_pathType = pathType;
61f160dfd0f1 Draw rectangles and ellipses!
unc0rr
parents: 9483
diff changeset
   485
}
61f160dfd0f1 Draw rectangles and ellipses!
unc0rr
parents: 9483
diff changeset
   486
61f160dfd0f1 Draw rectangles and ellipses!
unc0rr
parents: 9483
diff changeset
   487
QList<QPointF> DrawMapScene::makeEllipse(const QPointF &center, const QPointF &corner)
61f160dfd0f1 Draw rectangles and ellipses!
unc0rr
parents: 9483
diff changeset
   488
{
61f160dfd0f1 Draw rectangles and ellipses!
unc0rr
parents: 9483
diff changeset
   489
    QList<QPointF> l;
61f160dfd0f1 Draw rectangles and ellipses!
unc0rr
parents: 9483
diff changeset
   490
    qreal rx = qAbs(center.x() - corner.x());
61f160dfd0f1 Draw rectangles and ellipses!
unc0rr
parents: 9483
diff changeset
   491
    qreal ry = qAbs(center.y() - corner.y());
9553
f92d43816186 Some tweaks to ellipse code to produce less points
unc0rr
parents: 9551
diff changeset
   492
    qreal r = qMax(rx, ry);
9551
61f160dfd0f1 Draw rectangles and ellipses!
unc0rr
parents: 9483
diff changeset
   493
61f160dfd0f1 Draw rectangles and ellipses!
unc0rr
parents: 9483
diff changeset
   494
    if(r < 4)
61f160dfd0f1 Draw rectangles and ellipses!
unc0rr
parents: 9483
diff changeset
   495
    {
61f160dfd0f1 Draw rectangles and ellipses!
unc0rr
parents: 9483
diff changeset
   496
        l.append(center);
61f160dfd0f1 Draw rectangles and ellipses!
unc0rr
parents: 9483
diff changeset
   497
    } else
61f160dfd0f1 Draw rectangles and ellipses!
unc0rr
parents: 9483
diff changeset
   498
    {
9949
2aa9cf5badfc Added cast to qreal, avoiding ftbfs due to issue #758
Gianfranco Costamagna <costamagnagianfranco@yahoo.it>
parents: 9555
diff changeset
   499
        qreal angleDelta = qMax(static_cast<qreal> (0.1), qMin(static_cast<qreal> (0.7), 120 / r));
9551
61f160dfd0f1 Draw rectangles and ellipses!
unc0rr
parents: 9483
diff changeset
   500
        for(qreal angle = 0.0; angle < 2*M_PI; angle += angleDelta)
61f160dfd0f1 Draw rectangles and ellipses!
unc0rr
parents: 9483
diff changeset
   501
            l.append(center + QPointF(rx * cos(angle), ry * sin(angle)));
61f160dfd0f1 Draw rectangles and ellipses!
unc0rr
parents: 9483
diff changeset
   502
        l.append(l.first());
61f160dfd0f1 Draw rectangles and ellipses!
unc0rr
parents: 9483
diff changeset
   503
    }
61f160dfd0f1 Draw rectangles and ellipses!
unc0rr
parents: 9483
diff changeset
   504
61f160dfd0f1 Draw rectangles and ellipses!
unc0rr
parents: 9483
diff changeset
   505
    return l;
61f160dfd0f1 Draw rectangles and ellipses!
unc0rr
parents: 9483
diff changeset
   506
}
9555
485b424be769 uhm... a feature
unc0rr
parents: 9553
diff changeset
   507
485b424be769 uhm... a feature
unc0rr
parents: 9553
diff changeset
   508
QPointF DrawMapScene::putSomeConstraints(const QPointF &initialPoint, const QPointF &point)
485b424be769 uhm... a feature
unc0rr
parents: 9553
diff changeset
   509
{
485b424be769 uhm... a feature
unc0rr
parents: 9553
diff changeset
   510
    QPointF vector = point - initialPoint;
485b424be769 uhm... a feature
unc0rr
parents: 9553
diff changeset
   511
485b424be769 uhm... a feature
unc0rr
parents: 9553
diff changeset
   512
    for(int angle = 0; angle < 180; angle += 15)
485b424be769 uhm... a feature
unc0rr
parents: 9553
diff changeset
   513
    {
485b424be769 uhm... a feature
unc0rr
parents: 9553
diff changeset
   514
        QTransform transform;
485b424be769 uhm... a feature
unc0rr
parents: 9553
diff changeset
   515
        transform.rotate(angle);
485b424be769 uhm... a feature
unc0rr
parents: 9553
diff changeset
   516
485b424be769 uhm... a feature
unc0rr
parents: 9553
diff changeset
   517
        QPointF rotated = transform.map(vector);
485b424be769 uhm... a feature
unc0rr
parents: 9553
diff changeset
   518
485b424be769 uhm... a feature
unc0rr
parents: 9553
diff changeset
   519
        if(rotated.x() == 0) return point;
485b424be769 uhm... a feature
unc0rr
parents: 9553
diff changeset
   520
        if(qAbs(rotated.y() / rotated.x()) < 0.05) return initialPoint + transform.inverted().map(QPointF(rotated.x(), 0));
485b424be769 uhm... a feature
unc0rr
parents: 9553
diff changeset
   521
    }
485b424be769 uhm... a feature
unc0rr
parents: 9553
diff changeset
   522
485b424be769 uhm... a feature
unc0rr
parents: 9553
diff changeset
   523
    return point;
485b424be769 uhm... a feature
unc0rr
parents: 9553
diff changeset
   524
}
10235
bafca1686867 Drawn maps optimizer - first steps:
unc0rr
parents: 10223
diff changeset
   525
bafca1686867 Drawn maps optimizer - first steps:
unc0rr
parents: 10223
diff changeset
   526
void DrawMapScene::optimize()
bafca1686867 Drawn maps optimizer - first steps:
unc0rr
parents: 10223
diff changeset
   527
{
bafca1686867 Drawn maps optimizer - first steps:
unc0rr
parents: 10223
diff changeset
   528
    if(!paths.size()) return;
bafca1686867 Drawn maps optimizer - first steps:
unc0rr
parents: 10223
diff changeset
   529
bafca1686867 Drawn maps optimizer - first steps:
unc0rr
parents: 10223
diff changeset
   530
    // break paths into segments
bafca1686867 Drawn maps optimizer - first steps:
unc0rr
parents: 10223
diff changeset
   531
    Paths pth;
bafca1686867 Drawn maps optimizer - first steps:
unc0rr
parents: 10223
diff changeset
   532
bafca1686867 Drawn maps optimizer - first steps:
unc0rr
parents: 10223
diff changeset
   533
    foreach(const PathParams & pp, paths)
bafca1686867 Drawn maps optimizer - first steps:
unc0rr
parents: 10223
diff changeset
   534
    {
bafca1686867 Drawn maps optimizer - first steps:
unc0rr
parents: 10223
diff changeset
   535
        int l = pp.points.size();
bafca1686867 Drawn maps optimizer - first steps:
unc0rr
parents: 10223
diff changeset
   536
bafca1686867 Drawn maps optimizer - first steps:
unc0rr
parents: 10223
diff changeset
   537
        if(l == 1)
bafca1686867 Drawn maps optimizer - first steps:
unc0rr
parents: 10223
diff changeset
   538
        {
bafca1686867 Drawn maps optimizer - first steps:
unc0rr
parents: 10223
diff changeset
   539
            pth.prepend(pp);
bafca1686867 Drawn maps optimizer - first steps:
unc0rr
parents: 10223
diff changeset
   540
        } else
bafca1686867 Drawn maps optimizer - first steps:
unc0rr
parents: 10223
diff changeset
   541
        {
bafca1686867 Drawn maps optimizer - first steps:
unc0rr
parents: 10223
diff changeset
   542
            for(int i = l - 2; i >= 0; --i)
bafca1686867 Drawn maps optimizer - first steps:
unc0rr
parents: 10223
diff changeset
   543
            {
bafca1686867 Drawn maps optimizer - first steps:
unc0rr
parents: 10223
diff changeset
   544
                PathParams p = pp;
bafca1686867 Drawn maps optimizer - first steps:
unc0rr
parents: 10223
diff changeset
   545
                p.points = QList<QPoint>() << p.points[i] << p.points[i + 1];
bafca1686867 Drawn maps optimizer - first steps:
unc0rr
parents: 10223
diff changeset
   546
                pth.prepend(pp);
bafca1686867 Drawn maps optimizer - first steps:
unc0rr
parents: 10223
diff changeset
   547
            }
bafca1686867 Drawn maps optimizer - first steps:
unc0rr
parents: 10223
diff changeset
   548
        }
bafca1686867 Drawn maps optimizer - first steps:
unc0rr
parents: 10223
diff changeset
   549
    }
bafca1686867 Drawn maps optimizer - first steps:
unc0rr
parents: 10223
diff changeset
   550
bafca1686867 Drawn maps optimizer - first steps:
unc0rr
parents: 10223
diff changeset
   551
    // clear the scene
bafca1686867 Drawn maps optimizer - first steps:
unc0rr
parents: 10223
diff changeset
   552
    oldItems.clear();
bafca1686867 Drawn maps optimizer - first steps:
unc0rr
parents: 10223
diff changeset
   553
    oldPaths.clear();
bafca1686867 Drawn maps optimizer - first steps:
unc0rr
parents: 10223
diff changeset
   554
    clear();
bafca1686867 Drawn maps optimizer - first steps:
unc0rr
parents: 10223
diff changeset
   555
    paths.clear();
bafca1686867 Drawn maps optimizer - first steps:
unc0rr
parents: 10223
diff changeset
   556
    m_specialPoints.clear();
bafca1686867 Drawn maps optimizer - first steps:
unc0rr
parents: 10223
diff changeset
   557
bafca1686867 Drawn maps optimizer - first steps:
unc0rr
parents: 10223
diff changeset
   558
    // render the result
bafca1686867 Drawn maps optimizer - first steps:
unc0rr
parents: 10223
diff changeset
   559
    foreach(const PathParams & p, pth)
bafca1686867 Drawn maps optimizer - first steps:
unc0rr
parents: 10223
diff changeset
   560
    {
bafca1686867 Drawn maps optimizer - first steps:
unc0rr
parents: 10223
diff changeset
   561
        if(p.erasing)
bafca1686867 Drawn maps optimizer - first steps:
unc0rr
parents: 10223
diff changeset
   562
            m_pen.setBrush(m_eraser);
bafca1686867 Drawn maps optimizer - first steps:
unc0rr
parents: 10223
diff changeset
   563
        else
bafca1686867 Drawn maps optimizer - first steps:
unc0rr
parents: 10223
diff changeset
   564
            m_pen.setBrush(m_brush);
bafca1686867 Drawn maps optimizer - first steps:
unc0rr
parents: 10223
diff changeset
   565
bafca1686867 Drawn maps optimizer - first steps:
unc0rr
parents: 10223
diff changeset
   566
        m_pen.setWidth(deserializePenWidth(p.width));
bafca1686867 Drawn maps optimizer - first steps:
unc0rr
parents: 10223
diff changeset
   567
bafca1686867 Drawn maps optimizer - first steps:
unc0rr
parents: 10223
diff changeset
   568
        addPath(pointsToPath(p.points), m_pen);
bafca1686867 Drawn maps optimizer - first steps:
unc0rr
parents: 10223
diff changeset
   569
    }
bafca1686867 Drawn maps optimizer - first steps:
unc0rr
parents: 10223
diff changeset
   570
bafca1686867 Drawn maps optimizer - first steps:
unc0rr
parents: 10223
diff changeset
   571
    emit pathChanged();
bafca1686867 Drawn maps optimizer - first steps:
unc0rr
parents: 10223
diff changeset
   572
}