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/*
* Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; version 2 of the
* License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA
*/
#include "geom_draw_box.h"
#include "base/log.h"
#include "grt/spatial_handler.h"
DEFAULT_LOG_DOMAIN("GeomDrawBox");
void GeomDrawBox::draw_ring(cairo_t *cr, OGRRawPoint *points, int num_points, double scale, double x, double y, double height)
{
cairo_move_to(cr, (points[0].x-x) * scale, height - (points[0].y-y) * scale);
for (int i = 1; i < num_points; i++)
{
cairo_line_to(cr, (points[i].x-x) * scale, height - (points[i].y-y) * scale);
}
}
void GeomDrawBox::draw_ring_vertices(cairo_t *cr, OGRRawPoint *points, int num_points, double scale, double x, double y, double height)
{
cairo_arc(cr, (points[0].x-x) * scale, height - (points[0].y-y) * scale, 2, 0, 2*M_PI);
cairo_fill(cr);
for (int i = 1; i < num_points; i++)
{
cairo_arc(cr, (points[i].x-x) * scale, height - (points[i].y-y) * scale, 2, 0, 2*M_PI);
cairo_fill(cr);
}
}
void GeomDrawBox::draw_polygon(cairo_t *cr, OGRPolygon *poly, double scale, double x, double y, double height)
{
const OGRLinearRing *ring = poly->getExteriorRing();
if (ring->getNumPoints() > 0)
{
OGRRawPoint *points = new OGRRawPoint[ring->getNumPoints()];
ring->getPoints(points);
draw_ring(cr, points, ring->getNumPoints(), scale, x, y, height);
cairo_set_line_width(cr, 1);
cairo_set_source_rgb(cr, 0, 0, 0);
cairo_stroke_preserve(cr);
cairo_set_source_rgb(cr, 0.8, 0.8, 0.8);
cairo_fill(cr);
cairo_set_source_rgb(cr, 1, 0, 0);
draw_ring_vertices(cr, points, ring->getNumPoints(), scale, x, y, height);
delete []points;
}
}
void GeomDrawBox::set_data(const std::string &text)
{
spatial::Importer importer;
importer.import_from_mysql(text);
_geom = importer.steal_data();
set_needs_repaint();
}
void GeomDrawBox::draw_geometry(cairo_t *cr, OGRGeometry *geom, double scale, double x, double y, double height)
{
switch (geom->getGeometryType())
{
case wkbPolygon:
draw_polygon(cr, dynamic_cast<OGRPolygon*>(geom), scale, x, y, height);
break;
case wkbMultiPolygon:
{
OGRGeometryCollection *geoCollection = dynamic_cast<OGRGeometryCollection*>(geom);
for (int i = 0; i < geoCollection->getNumGeometries(); ++i)
draw_geometry(cr, geoCollection->getGeometryRef(i), scale, x, y, height);
}
break;
default:
log_warning("Can't paint geometry type %s\n", geom->getGeometryName());
break;
}
}
void GeomDrawBox::repaint(cairo_t *cr, int x, int y, int w, int h)
{
if (_geom)
{
OGREnvelope env;
_geom->getEnvelope(&env);
double fig_width = env.MaxX - env.MinX;
double fig_height = env.MaxY - env.MinY;
double scale;
int padding = 5;
if (fig_width > fig_height)
scale = (get_width() - padding*2) / fig_width;
else
scale = (get_height() - padding*2) / fig_height;
cairo_translate(cr, padding, padding);
draw_geometry(cr, _geom, scale, env.MinX, env.MinY, get_height()-padding*2);
}
}
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