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| Rev | Author | Line No. | Line |
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| 305 | KeyOz | 1 | /* |
| 2 | * |
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| 3 | * This file is part of QMapControl, |
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| 4 | * an open-source cross-platform map widget |
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| 5 | * |
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| 6 | * Copyright (C) 2007 - 2008 Kai Winter |
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| 7 | * |
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| 8 | * This program is free software: you can redistribute it and/or modify |
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| 9 | * it under the terms of the GNU Lesser General Public License as published by |
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| 10 | * the Free Software Foundation, either version 3 of the License, or |
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| 11 | * (at your option) any later version. |
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| 12 | * |
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| 13 | * This program is distributed in the hope that it will be useful, |
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| 14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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| 16 | * GNU Lesser General Public License for more details. |
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| 17 | * |
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| 18 | * You should have received a copy of the GNU Lesser General Public License |
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| 19 | * along with QMapControl. If not, see <http://www.gnu.org/licenses/>. |
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| 20 | * |
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| 21 | * Contact e-mail: kaiwinter@gmx.de |
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| 22 | * Program URL : http://qmapcontrol.sourceforge.net/ |
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| 23 | * |
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| 24 | */ |
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| 25 | |||
| 26 | #include "layermanager.h" |
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| 27 | namespace qmapcontrol |
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| 28 | { |
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| 29 | LayerManager::LayerManager(MapControl* mapcontrol, QSize size) |
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| 30 | :mapcontrol(mapcontrol), scroll(QPoint(0,0)), size(size), whilenewscroll(QPoint(0,0)) |
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| 31 | { |
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| 32 | // genauer berechnen? |
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| 33 | offSize = size *2; |
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| 34 | composedOffscreenImage = QPixmap(offSize); |
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| 35 | composedOffscreenImage2 = QPixmap(offSize); |
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| 36 | zoomImage = QPixmap(size); |
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| 37 | zoomImage.fill(Qt::white); |
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| 38 | screenmiddle = QPoint(size.width()/2, size.height()/2); |
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| 39 | } |
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| 40 | |||
| 41 | |||
| 42 | LayerManager::~LayerManager() |
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| 43 | { |
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| 44 | mylayers.clear(); |
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| 45 | } |
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| 46 | |||
| 47 | QPointF LayerManager::currentCoordinate() const |
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| 48 | { |
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| 49 | return mapmiddle; |
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| 50 | } |
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| 51 | |||
| 52 | QPixmap LayerManager::getImage() const |
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| 53 | { |
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| 54 | return composedOffscreenImage; |
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| 55 | } |
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| 56 | |||
| 57 | Layer* LayerManager::layer() const |
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| 58 | { |
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| 59 | Q_ASSERT_X(mylayers.size()>0, "LayerManager::getLayer()", "No layers were added!"); |
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| 60 | return mylayers.first(); |
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| 61 | } |
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| 62 | |||
| 63 | Layer* LayerManager::layer(const QString& layername) const |
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| 64 | { |
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| 65 | QListIterator<Layer*> layerit(mylayers); |
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| 66 | while (layerit.hasNext()) |
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| 67 | { |
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| 68 | Layer* l = layerit.next(); |
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| 69 | if (l->layername() == layername) |
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| 70 | return l; |
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| 71 | } |
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| 72 | return 0; |
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| 73 | } |
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| 74 | |||
| 75 | QList<QString> LayerManager::layers() const |
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| 76 | { |
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| 77 | QList<QString> keys; |
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| 78 | QListIterator<Layer*> layerit(mylayers); |
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| 79 | while (layerit.hasNext()) |
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| 80 | { |
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| 81 | keys.append(layerit.next()->layername()); |
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| 82 | } |
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| 83 | return keys; |
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| 84 | } |
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| 85 | |||
| 86 | |||
| 87 | void LayerManager::scrollView(const QPoint& point) |
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| 88 | { |
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| 89 | scroll += point; |
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| 90 | zoomImageScroll+=point; |
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| 91 | mapmiddle_px += point; |
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| 92 | |||
| 93 | mapmiddle = layer()->mapadapter()->displayToCoordinate(mapmiddle_px); |
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| 94 | if (!checkOffscreen()) |
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| 95 | { |
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| 96 | newOffscreenImage(); |
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| 97 | } |
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| 98 | else |
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| 99 | { |
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| 100 | moveWidgets(); |
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| 101 | } |
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| 102 | } |
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| 103 | |||
| 104 | void LayerManager::moveWidgets() |
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| 105 | { |
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| 106 | QListIterator<Layer*> it(mylayers); |
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| 107 | while (it.hasNext()) |
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| 108 | { |
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| 109 | it.next()->moveWidgets(mapmiddle_px); |
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| 110 | } |
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| 111 | } |
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| 112 | |||
| 113 | void LayerManager::setView(const QPointF& coordinate) |
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| 114 | { |
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| 115 | mapmiddle_px = layer()->mapadapter()->coordinateToDisplay(coordinate); |
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| 116 | mapmiddle = coordinate; |
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| 117 | |||
| 118 | //TODO: muss wegen moveTo() raus |
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| 119 | if (!checkOffscreen()) |
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| 120 | { |
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| 121 | newOffscreenImage(); |
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| 122 | } |
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| 123 | else |
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| 124 | { |
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| 125 | //TODO: |
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| 126 | // verschiebung ausrechnen |
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| 127 | // oder immer neues offscreenimage |
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| 128 | newOffscreenImage(); |
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| 129 | } |
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| 130 | } |
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| 131 | |||
| 132 | void LayerManager::setView(QList<QPointF> coordinates) |
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| 133 | { |
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| 134 | setMiddle(coordinates); |
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| 135 | // mapcontrol->update(); |
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| 136 | } |
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| 137 | |||
| 138 | void LayerManager::setViewAndZoomIn(const QList<QPointF> coordinates) |
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| 139 | { |
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| 140 | while (containsAll(coordinates)) |
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| 141 | { |
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| 142 | setMiddle(coordinates); |
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| 143 | zoomIn(); |
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| 144 | } |
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| 145 | |||
| 146 | |||
| 147 | if (!containsAll(coordinates)) |
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| 148 | { |
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| 149 | zoomOut(); |
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| 150 | } |
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| 151 | |||
| 152 | mapcontrol->update(); |
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| 153 | } |
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| 154 | |||
| 155 | void LayerManager::setMiddle(QList<QPointF> coordinates) |
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| 156 | { |
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| 157 | int sum_x = 0; |
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| 158 | int sum_y = 0; |
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| 159 | for (int i=0; i<coordinates.size(); i++) |
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| 160 | { |
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| 161 | // mitte muss in px umgerechnet werden, da aufgrund der projektion die mittebestimmung aus koordinaten ungenau ist |
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| 162 | QPoint p = layer()->mapadapter()->coordinateToDisplay(coordinates.at(i)); |
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| 163 | sum_x += p.x(); |
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| 164 | sum_y += p.y(); |
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| 165 | } |
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| 166 | QPointF middle = layer()->mapadapter()->displayToCoordinate(QPoint(sum_x/coordinates.size(), sum_y/coordinates.size())); |
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| 167 | // middle in px rechnen! |
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| 168 | |||
| 169 | setView(middle); |
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| 170 | } |
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| 171 | |||
| 172 | bool LayerManager::containsAll(QList<QPointF> coordinates) const |
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| 173 | { |
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| 174 | QRectF bb = getViewport(); |
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| 175 | bool containsall = true; |
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| 176 | for (int i=0; i<coordinates.size(); i++) |
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| 177 | { |
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| 178 | if (!bb.contains(coordinates.at(i))) |
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| 179 | return false; |
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| 180 | } |
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| 181 | return containsall; |
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| 182 | } |
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| 183 | QPoint LayerManager::getMapmiddle_px() const |
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| 184 | { |
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| 185 | return mapmiddle_px; |
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| 186 | } |
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| 187 | |||
| 188 | QRectF LayerManager::getViewport() const |
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| 189 | { |
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| 190 | QPoint upperLeft = QPoint(mapmiddle_px.x()-screenmiddle.x(), mapmiddle_px.y()+screenmiddle.y()); |
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| 191 | QPoint lowerRight = QPoint(mapmiddle_px.x()+screenmiddle.x(), mapmiddle_px.y()-screenmiddle.y()); |
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| 192 | |||
| 193 | QPointF ulCoord = layer()->mapadapter()->displayToCoordinate(upperLeft); |
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| 194 | QPointF lrCoord = layer()->mapadapter()->displayToCoordinate(lowerRight); |
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| 195 | |||
| 196 | QRectF coordinateBB = QRectF(ulCoord, QSizeF( (lrCoord-ulCoord).x(), (lrCoord-ulCoord).y())); |
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| 197 | return coordinateBB; |
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| 198 | } |
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| 199 | |||
| 200 | void LayerManager::addLayer(Layer* layer) |
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| 201 | { |
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| 202 | mylayers.append(layer); |
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| 203 | |||
| 204 | layer->setSize(size); |
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| 205 | |||
| 206 | connect(layer, SIGNAL(updateRequest(QRectF)), |
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| 207 | this, SLOT(updateRequest(QRectF))); |
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| 208 | connect(layer, SIGNAL(updateRequest()), |
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| 209 | this, SLOT(updateRequest())); |
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| 210 | |||
| 211 | if (mylayers.size()==1) |
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| 212 | { |
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| 213 | setView(QPointF(0,0)); |
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| 214 | } |
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| 215 | } |
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| 216 | |||
| 217 | void LayerManager::newOffscreenImage(bool clearImage, bool showZoomImage) |
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| 218 | { |
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| 219 | // qDebug() << "LayerManager::newOffscreenImage()"; |
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| 220 | whilenewscroll = mapmiddle_px; |
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| 221 | |||
| 222 | if (clearImage) |
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| 223 | { |
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| 224 | composedOffscreenImage2.fill(Qt::white); |
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| 225 | } |
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| 226 | |||
| 227 | QPainter painter(&composedOffscreenImage2); |
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| 228 | if (showZoomImage) |
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| 229 | { |
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| 230 | painter.drawPixmap(screenmiddle.x()-zoomImageScroll.x(), screenmiddle.y()-zoomImageScroll.y(),zoomImage); |
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| 231 | } |
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| 232 | //only draw basemaps |
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| 233 | for (int i=0; i<mylayers.count(); i++) |
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| 234 | { |
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| 235 | Layer* l = mylayers.at(i); |
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| 236 | if (l->isVisible()) |
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| 237 | { |
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| 238 | if (l->layertype() == Layer::MapLayer) |
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| 239 | { |
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| 240 | l->drawYourImage(&painter, whilenewscroll); |
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| 241 | } |
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| 242 | } |
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| 243 | } |
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| 244 | |||
| 245 | composedOffscreenImage = composedOffscreenImage2; |
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| 246 | scroll = mapmiddle_px-whilenewscroll; |
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| 247 | |||
| 248 | mapcontrol->update(); |
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| 249 | } |
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| 250 | |||
| 251 | void LayerManager::zoomIn() |
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| 252 | { |
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| 253 | QCoreApplication::processEvents(); |
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| 254 | |||
| 255 | ImageManager::instance()->abortLoading(); |
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| 256 | // layer rendern abbrechen? |
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| 257 | zoomImageScroll = QPoint(0,0); |
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| 258 | |||
| 259 | zoomImage.fill(Qt::white); |
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| 260 | QPixmap tmpImg = composedOffscreenImage.copy(screenmiddle.x()+scroll.x(),screenmiddle.y()+scroll.y(), size.width(), size.height()); |
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| 261 | |||
| 262 | QPainter painter(&zoomImage); |
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| 263 | painter.save(); |
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| 264 | painter.translate(screenmiddle); |
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| 265 | painter.scale(2, 2); |
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| 266 | painter.translate(-screenmiddle); |
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| 267 | |||
| 268 | painter.drawPixmap(0,0,tmpImg); |
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| 269 | painter.restore(); |
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| 270 | |||
| 271 | QListIterator<Layer*> it(mylayers); |
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| 272 | //TODO: remove hack, that mapadapters wont get set zoom multiple times |
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| 273 | QList<const MapAdapter*> doneadapters; |
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| 274 | while (it.hasNext()) |
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| 275 | { |
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| 276 | Layer* l = it.next(); |
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| 277 | if (!doneadapters.contains(l->mapadapter())) |
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| 278 | { |
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| 279 | l->zoomIn(); |
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| 280 | doneadapters.append(l->mapadapter()); |
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| 281 | } |
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| 282 | } |
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| 283 | mapmiddle_px = layer()->mapadapter()->coordinateToDisplay(mapmiddle); |
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| 284 | whilenewscroll = mapmiddle_px; |
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| 285 | |||
| 286 | newOffscreenImage(); |
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| 287 | |||
| 288 | } |
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| 289 | |||
| 290 | bool LayerManager::checkOffscreen() const |
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| 291 | { |
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| 292 | // calculate offscreenImage dimension (px) |
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| 293 | QPoint upperLeft = mapmiddle_px - screenmiddle; |
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| 294 | QPoint lowerRight = mapmiddle_px + screenmiddle; |
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| 295 | QRect viewport = QRect(upperLeft, lowerRight); |
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| 296 | |||
| 297 | QRect testRect = layer()->offscreenViewport(); |
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| 298 | |||
| 299 | if (!testRect.contains(viewport)) |
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| 300 | { |
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| 301 | return false; |
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| 302 | } |
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| 303 | |||
| 304 | return true; |
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| 305 | } |
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| 306 | void LayerManager::zoomOut() |
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| 307 | { |
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| 308 | QCoreApplication::processEvents(); |
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| 309 | ImageManager::instance()->abortLoading(); |
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| 310 | zoomImageScroll = QPoint(0,0); |
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| 311 | zoomImage.fill(Qt::white); |
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| 312 | QPixmap tmpImg = composedOffscreenImage.copy(screenmiddle.x()+scroll.x(),screenmiddle.y()+scroll.y(), size.width(), size.height()); |
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| 313 | QPainter painter(&zoomImage); |
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| 314 | painter.translate(screenmiddle); |
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| 315 | painter.scale(0.5,0.5); |
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| 316 | painter.translate(-screenmiddle); |
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| 317 | painter.drawPixmap(0,0,tmpImg); |
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| 318 | |||
| 319 | painter.translate(screenmiddle); |
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| 320 | painter.scale(2,2); |
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| 321 | painter.translate(-screenmiddle); |
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| 322 | |||
| 323 | QListIterator<Layer*> it(mylayers); |
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| 324 | //TODO: remove hack, that mapadapters wont get set zoom multiple times |
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| 325 | QList<const MapAdapter*> doneadapters; |
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| 326 | while (it.hasNext()) |
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| 327 | { |
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| 328 | Layer* l = it.next(); |
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| 329 | if (!doneadapters.contains(l->mapadapter())) |
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| 330 | { |
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| 331 | l->zoomOut(); |
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| 332 | doneadapters.append(l->mapadapter()); |
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| 333 | } |
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| 334 | } |
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| 335 | mapmiddle_px = layer()->mapadapter()->coordinateToDisplay(mapmiddle); |
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| 336 | whilenewscroll = mapmiddle_px; |
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| 337 | newOffscreenImage(); |
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| 338 | } |
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| 339 | |||
| 340 | void LayerManager::setZoom(int zoomlevel) |
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| 341 | { |
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| 342 | int current_zoom; |
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| 343 | if (layer()->mapadapter()->minZoom() < layer()->mapadapter()->maxZoom()) |
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| 344 | { |
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| 345 | current_zoom = layer()->mapadapter()->currentZoom(); |
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| 346 | } |
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| 347 | else |
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| 348 | { |
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| 349 | current_zoom = layer()->mapadapter()->minZoom() - layer()->mapadapter()->currentZoom(); |
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| 350 | } |
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| 351 | |||
| 352 | |||
| 353 | if (zoomlevel < current_zoom) |
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| 354 | { |
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| 355 | for (int i=current_zoom; i>zoomlevel; i--) |
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| 356 | { |
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| 357 | zoomOut(); |
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| 358 | } |
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| 359 | } |
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| 360 | else |
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| 361 | { |
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| 362 | for (int i=current_zoom; i<zoomlevel; i++) |
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| 363 | { |
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| 364 | zoomIn(); |
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| 365 | } |
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| 366 | } |
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| 367 | } |
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| 368 | |||
| 369 | void LayerManager::mouseEvent(const QMouseEvent* evnt) |
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| 370 | { |
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| 371 | QListIterator<Layer*> it(mylayers); |
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| 372 | while (it.hasNext()) |
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| 373 | { |
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| 374 | Layer* l = it.next(); |
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| 375 | if (l->isVisible()) |
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| 376 | { |
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| 377 | l->mouseEvent(evnt, mapmiddle_px); |
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| 378 | } |
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| 379 | } |
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| 380 | } |
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| 381 | |||
| 382 | void LayerManager::updateRequest(QRectF rect) |
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| 383 | { |
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| 384 | const QPoint topleft = mapmiddle_px - screenmiddle; |
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| 385 | |||
| 386 | QPointF c = rect.topLeft(); |
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| 387 | |||
| 388 | if (getViewport().contains(c) || getViewport().contains(rect.bottomRight())) |
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| 389 | { |
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| 390 | // QPoint point = getLayer()->getMapAdapter()->coordinateToDisplay(c); |
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| 391 | // QPoint finalpoint = point-topleft; |
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| 392 | // QRect rect_px = QRect(int(finalpoint.x()-(rect.width()-1)/2), int(finalpoint.y()-(rect.height()-1)/2), |
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| 393 | // int(rect.width()+1), int(rect.height()+1)); |
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| 394 | // |
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| 395 | // mapcontrol->updateRequest(rect_px); |
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| 396 | mapcontrol->update(); |
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| 397 | // newOffscreenImage(); |
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| 398 | } |
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| 399 | } |
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| 400 | void LayerManager::updateRequest() |
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| 401 | { |
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| 402 | newOffscreenImage(); |
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| 403 | } |
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| 404 | void LayerManager::forceRedraw() |
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| 405 | { |
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| 406 | newOffscreenImage(); |
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| 407 | } |
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| 408 | void LayerManager::removeZoomImage() |
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| 409 | { |
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| 410 | zoomImage.fill(Qt::white); |
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| 411 | forceRedraw(); |
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| 412 | } |
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| 413 | |||
| 414 | void LayerManager::drawGeoms(QPainter* painter) |
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| 415 | { |
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| 416 | QListIterator<Layer*> it(mylayers); |
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| 417 | while (it.hasNext()) |
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| 418 | { |
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| 419 | Layer* l = it.next(); |
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| 420 | if (l->layertype() == Layer::GeometryLayer && l->isVisible()) |
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| 421 | { |
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| 422 | l->drawYourGeometries(painter, mapmiddle_px, layer()->offscreenViewport()); |
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| 423 | } |
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| 424 | } |
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| 425 | } |
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| 426 | void LayerManager::drawImage(QPainter* painter) |
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| 427 | { |
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| 428 | painter->drawPixmap(-scroll.x()-screenmiddle.x(), |
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| 429 | -scroll.y()-screenmiddle.y(), |
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| 430 | composedOffscreenImage); |
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| 431 | } |
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| 432 | |||
| 433 | int LayerManager::currentZoom() const |
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| 434 | { |
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| 435 | return layer()->mapadapter()->currentZoom(); |
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| 436 | } |
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| 437 | |||
| 438 | void LayerManager::resize(QSize newSize) |
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| 439 | { |
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| 440 | size = newSize; |
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| 441 | offSize = newSize *2; |
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| 442 | composedOffscreenImage = QPixmap(offSize); |
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| 443 | composedOffscreenImage2 = QPixmap(offSize); |
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| 444 | zoomImage = QPixmap(newSize); |
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| 445 | zoomImage.fill(Qt::white); |
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| 446 | |||
| 447 | screenmiddle = QPoint(newSize.width()/2, newSize.height()/2); |
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| 448 | |||
| 449 | QListIterator<Layer*> it(mylayers); |
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| 450 | while (it.hasNext()) |
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| 451 | { |
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| 452 | Layer* l = it.next(); |
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| 453 | l->setSize(newSize); |
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| 454 | } |
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| 455 | |||
| 456 | newOffscreenImage(); |
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| 457 | } |
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| 458 | } |