Initial import / commit
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Nicole Faerber
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114
DrawMapCairo.cpp
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114
DrawMapCairo.cpp
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/*
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DrawMap - a demo program for libosmscout
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Copyright (C) 2009 Tim Teulings
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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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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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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include <iostream>
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#include <osmscout/Database.h>
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#include <osmscout/MapService.h>
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#include <osmscout/BasemapDatabase.h>
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#include <osmscout/MapPainterCairo.h>
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#include <DrawMapCairo.h>
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/*
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Example for the nordrhein-westfalen.osm (to be executed in meson build directory):
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Demos/DrawMapCairo ../maps/nordrhein-westfalen ../stylesheets/standard.oss 800 480 51.51241 7.46525 70000 test.png
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*/
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osmscout::DatabaseParameter databaseParameter;
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osmscout::DatabaseRef database;
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osmscout::MapServiceRef mapService;
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osmscout::StyleConfigRef styleConfig;
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osmscout::BasemapDatabaseRef basemapDatabase;
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osmscout::MercatorProjection projection;
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osmscout::MapParameter drawParameter;
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osmscout::AreaSearchParameter searchParameter;
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osmscout::MapData data;
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int DrawMapCairoInit(int argc, char* argv[])
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{
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database=std::make_shared<osmscout::Database>(databaseParameter);
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if (!database->Open("data/nordrhein-westfalen-latest/")) {
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std::cerr << "Cannot open database" << std::endl;
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return -1;
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}
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mapService=std::make_shared<osmscout::MapService>(database);
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styleConfig = std::make_shared<osmscout::StyleConfig>(database->GetTypeConfig());
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if (!styleConfig->Load("data/standard.oss")) {
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std::cerr << "Cannot open style" << std::endl;
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return -1;
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}
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drawParameter.SetFontName("/usr/share/fonts/TTF/LiberationSans-Regular.ttf");
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drawParameter.SetFontSize(3.0);
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drawParameter.SetRenderSeaLand(true);
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drawParameter.SetRenderUnknowns(false);
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drawParameter.SetRenderBackground(false);
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drawParameter.SetRenderContourLines(false);
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drawParameter.SetRenderHillShading(false);
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//drawParameter.SetIconMode(args.iconMode);
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//drawParameter.SetIconPaths(args.iconPaths);
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drawParameter.SetDebugData(false);
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drawParameter.SetDebugPerformance(false);
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drawParameter.SetLabelLineMinCharCount(15);
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drawParameter.SetLabelLineMaxCharCount(30);
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drawParameter.SetLabelLineFitToArea(true);
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return 0;
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}
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int DrawMapCairo(cairo_surface_t *surface, double lat, double lon, unsigned int zoomlevel, double direction)
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{
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osmscout::GeoCoord center(lat, lon);
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osmscout::Magnification zoom{osmscout::Magnification::magClose};
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std::list<osmscout::TileRef> tiles;
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osmscout::MapPainterCairo painter(styleConfig);
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cairo_t *cairo=cairo_create(surface);
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assert(database);
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assert(database->IsOpen());
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assert(mapService);
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assert(styleConfig);
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zoom.SetMagnification(zoomlevel);
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projection.Set(center, direction, zoom, 96, 800, 600);
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mapService->LookupTiles(projection, tiles);
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mapService->LoadMissingTileData(searchParameter,*styleConfig, tiles);
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mapService->AddTileDataToMapData(tiles, data);
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mapService->GetGroundTiles(projection, data.groundTiles);
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//LoadBaseMapTiles(data.baseMapTiles);
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osmscout::GeoBox boundingBox;
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projection.GetDimensions(boundingBox);
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if (!painter.DrawMap(projection, drawParameter, data, cairo))
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std::cerr << "Cannot paint" << std::endl;;
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cairo_destroy(cairo);
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return 0;
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}
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14
Makefile
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14
Makefile
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LDFLAGS=`pkg-config --libs cairo` `pkg-config --libs gtk+-3.0` -losmscout_map_cairo -losmscout_map -losmscout
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CFLAGS=-Wall -O2 -I./include/ `pkg-config --cflags cairo` `pkg-config --cflags gtk+-3.0`
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CXXFLAGS=-Wall -O2 -std=c++17 -I./include/ `pkg-config --cflags cairo` `pkg-config --cflags pango`
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OBJS=gmapnix.o DrawMapCairo.o
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PRG=gmapnix
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all: $(PRG)
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gmapnix: $(OBJS)
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$(CXX) -o $(PRG) $(OBJS) $(LDFLAGS)
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clean:
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rm -f $(PRG) $(OBJS)
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137
gmapnix.c
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137
gmapnix.c
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#include <stdio.h>
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#include <gtk/gtk.h>
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#include <cairo.h>
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#include <DrawMapCairo.h>
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#define DEFAULT_WIDTH 800
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#define DEFAULT_HEIGHT 600
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// UI variables
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static GtkWidget *window = NULL;
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static GtkWidget *image_darea = NULL;
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// we paint everything in here and then into the drawing area widget
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static cairo_surface_t *psurface;
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static unsigned int zoomlevel=70000;
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static double direction=0.0;
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static double center_lat=50.8838492;
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static double center_lon=8.0209591;
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static gboolean need_redraw=TRUE;
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static gboolean
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draw_event (GtkWidget *widget,
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cairo_t *wcr,
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gpointer data)
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{
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static cairo_surface_t *surface=NULL;
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if (need_redraw) {
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if (surface != NULL)
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cairo_surface_destroy(surface);
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surface=cairo_image_surface_create(CAIRO_FORMAT_RGB24, DEFAULT_WIDTH, DEFAULT_HEIGHT);
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DrawMapCairo(surface, center_lat, center_lon, zoomlevel, direction);
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need_redraw=FALSE;
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}
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cairo_set_source_surface (wcr, surface, 0, 0);
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cairo_paint (wcr);
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return FALSE;
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}
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void
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move_clicked(GtkWidget *button, gpointer user_data)
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{
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gchar *dir=(gchar *)user_data;
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switch (dir[0]) {
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case 'l':
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center_lon-=(100. / zoomlevel);
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break;
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case 'r':
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center_lon+=(100. / zoomlevel);
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break;
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case 'u':
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center_lat+=(100. / zoomlevel);
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break;
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case 'd':
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center_lat-=(100. / zoomlevel);
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break;
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case '+':
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zoomlevel+=(zoomlevel/10);
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break;
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case '-':
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zoomlevel-=(zoomlevel/10);
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break;
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}
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fprintf(stderr, "%f %f @ %d\n", center_lat, center_lon, zoomlevel);
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need_redraw=TRUE;
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gtk_widget_queue_draw(image_darea);
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}
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void
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create_main_window (void)
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{
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GtkWidget *box;
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GtkWidget *hbox;
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GtkWidget *w, *i;
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GtkWidget *grid;
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window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
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psurface = cairo_image_surface_create (CAIRO_FORMAT_RGB24, 800, 600);
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box = gtk_box_new(GTK_ORIENTATION_VERTICAL, 4);
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gtk_container_add (GTK_CONTAINER (window), box);
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image_darea = gtk_drawing_area_new ();
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gtk_widget_set_size_request (image_darea, 800, 600);
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gtk_container_add (GTK_CONTAINER (box), image_darea);
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g_signal_connect (image_darea, "draw",
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G_CALLBACK (draw_event), NULL);
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grid = gtk_grid_new();
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w=gtk_button_new_with_label("left");
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gtk_grid_attach(GTK_GRID(grid), w, 0, 1, 1, 1);
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g_signal_connect (w, "clicked",
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G_CALLBACK (move_clicked), "l");
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w=gtk_button_new_with_label("right");
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gtk_grid_attach(GTK_GRID(grid), w, 2, 1, 1, 1);
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g_signal_connect (w, "clicked",
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G_CALLBACK (move_clicked), "r");
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w=gtk_button_new_with_label("up");
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gtk_grid_attach(GTK_GRID(grid), w, 1, 0, 1, 1);
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g_signal_connect (w, "clicked",
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G_CALLBACK (move_clicked), "u");
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w=gtk_button_new_with_label("down");
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g_signal_connect (w, "clicked",
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G_CALLBACK (move_clicked), "d");
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gtk_grid_attach(GTK_GRID(grid), w, 1, 2, 1, 1);
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w=gtk_button_new_with_label("+");
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g_signal_connect (w, "clicked",
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G_CALLBACK (move_clicked), "+");
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gtk_grid_attach(GTK_GRID(grid), w, 3, 0, 1, 1);
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w=gtk_button_new_with_label("-");
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g_signal_connect (w, "clicked",
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G_CALLBACK (move_clicked), "-");
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gtk_grid_attach(GTK_GRID(grid), w, 3, 2, 1, 1);
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gtk_container_add (GTK_CONTAINER (box), grid);
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}
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int main(int argc, char **argv)
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{
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cairo_surface_t *surface;
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if (DrawMapCairoInit(argc, argv) != 0) {
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fprintf(stderr, "DrawMapCairoInit() failed\n");
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return 1;
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}
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gtk_init(&argc, &argv);
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create_main_window();
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gtk_widget_show_all(window);
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gtk_main();
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return 0;
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}
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14
include/DrawMapCairo.h
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14
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#ifndef DrawMapCairo_H
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#define DrawMapCairo_H
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#ifdef __cplusplus
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extern "C"
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#endif
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int DrawMapCairoInit(int, char**);
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#ifdef __cplusplus
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extern "C"
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#endif
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int DrawMapCairo(cairo_surface_t *, double, double, unsigned int, double);
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#endif
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