1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
/* ============================================================
 *
 * This file is a part of digiKam project
 * https://www.digikam.org
 *
 * Date        : 2023-05-15
 * Description : geolocation engine based on Marble.
 *               (c) 2007-2022 Marble Team
 *               https://invent.kde.org/education/marble/-/raw/master/data/credits_authors.html
 *
 * SPDX-FileCopyrightText: 2023-2024 by Gilles Caulier <caulier dot gilles at gmail dot com>
 *
 * SPDX-License-Identifier: LGPL-2.1-or-later
 *
 * ============================================================ */

#include "BillboardGraphicsItem.h"

// Local includes

#include "MarbleGraphicsItem_p.h"
#include "ViewportParams.h"

namespace Marble
{

class Q_DECL_HIDDEN BillboardGraphicsItemPrivate : public MarbleGraphicsItemPrivate
{
public:

    BillboardGraphicsItemPrivate(BillboardGraphicsItem* parent)
        : MarbleGraphicsItemPrivate(parent),
          m_alignment(Qt::AlignHCenter | Qt::AlignVCenter)
    {
    }

    QVector<QPointF> positions() const override
    {
        return m_positions;
    }

    QVector<QPointF> absolutePositions() const override
    {
        return m_positions;
    }

    Qt::Alignment m_alignment;

    void setProjection(const ViewportParams* viewport) override
    {
        m_positions.clear();

        qreal x[100], y;
        int pointRepeatNumber = 0;
        bool globeHidesPoint;

        viewport->screenCoordinates(m_coordinates, x, y, pointRepeatNumber,
                                    m_size, globeHidesPoint);

        // Don't display items if they are on the far side of the globe.
        if (globeHidesPoint)
        {
            return;
        }

        m_positions.reserve(pointRepeatNumber);
        // handle vertical alignment
        qint32 topY = (viewport->height() - m_size.height()) / 2;

        if (m_alignment & Qt::AlignTop)
        {
            topY = y - m_size.height();
        }

        else if (m_alignment & Qt::AlignVCenter)
        {
            topY = y - (m_size.height() / 2);
        }

        else if (m_alignment & Qt::AlignBottom)
        {
            topY = y;
        }

        for (int i = 0; i < pointRepeatNumber; ++i)
        {
            // handle horizontal alignment
            qint32 leftX = (viewport->width() - m_size.width()) / 2;

            if (m_alignment & Qt::AlignLeft)
            {
                leftX =  x[i] - m_size.width();
            }

            else if (m_alignment & Qt::AlignHCenter)
            {
                leftX = x[i] - (m_size.width() / 2);
            }

            else if (m_alignment & Qt::AlignRight)
            {
                leftX = x[i];
            }

            m_positions.append(QPoint(leftX, topY));
        }
    }

    GeoDataCoordinates m_coordinates;
    QVector<QPointF> m_positions;
};

BillboardGraphicsItem::BillboardGraphicsItem()
    : MarbleGraphicsItem(new BillboardGraphicsItemPrivate(this))
{
}

GeoDataCoordinates BillboardGraphicsItem::coordinate() const
{
    Q_D(const BillboardGraphicsItem);
    return d->m_coordinates;
}

void BillboardGraphicsItem::setCoordinate(const GeoDataCoordinates& coordinates)
{
    Q_D(BillboardGraphicsItem);
    d->m_coordinates = coordinates;
}

QVector<QPointF> BillboardGraphicsItem::positions() const
{
    Q_D(const BillboardGraphicsItem);
    return d->positions();
}

QVector<QRectF> BillboardGraphicsItem::boundingRects() const
{
    Q_D(const BillboardGraphicsItem);

    QVector<QRectF> rects;
    rects.reserve(d->m_positions.size());

    QSizeF const size = d->m_size;

    for (const QPointF& point : d->m_positions)
    {
        rects << QRectF(point, size);
    }

    return rects;
}

QRectF BillboardGraphicsItem::containsRect(const QPointF& point) const
{
    for (const QRectF& rect : boundingRects())
    {
        if (rect.contains(point))
        {
            return rect;
        }
    }

    return QRectF();
}

Qt::Alignment BillboardGraphicsItem::alignment() const
{
    Q_D(const BillboardGraphicsItem);
    return d->m_alignment;
}

void BillboardGraphicsItem::setAlignment(Qt::Alignment alignment)
{
    Q_D(BillboardGraphicsItem);
    d->m_alignment = alignment;
}

} // Marble namespace