// License: GPL. For details, see LICENSE file.
package org.openstreetmap.josm.gui.mappaint.xml;
import static org.openstreetmap.josm.tools.I18n.tr;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.nio.charset.StandardCharsets;
import java.util.Collection;
import java.util.Collections;
import java.util.HashMap;
import java.util.LinkedList;
import java.util.List;
import java.util.Map;
import java.util.Objects;
import org.openstreetmap.josm.Main;
import org.openstreetmap.josm.data.osm.Node;
import org.openstreetmap.josm.data.osm.OsmPrimitive;
import org.openstreetmap.josm.data.osm.OsmUtils;
import org.openstreetmap.josm.data.osm.Relation;
import org.openstreetmap.josm.data.osm.Way;
import org.openstreetmap.josm.gui.mappaint.Cascade;
import org.openstreetmap.josm.gui.mappaint.Keyword;
import org.openstreetmap.josm.gui.mappaint.MultiCascade;
import org.openstreetmap.josm.gui.mappaint.Range;
import org.openstreetmap.josm.gui.mappaint.StyleKeys;
import org.openstreetmap.josm.gui.mappaint.StyleSource;
import org.openstreetmap.josm.gui.preferences.SourceEntry;
import org.openstreetmap.josm.io.CachedFile;
import org.openstreetmap.josm.tools.Utils;
import org.openstreetmap.josm.tools.XmlObjectParser;
import org.xml.sax.SAXException;
import org.xml.sax.SAXParseException;
public class XmlStyleSource extends StyleSource implements StyleKeys {
/**
* The accepted MIME types sent in the HTTP Accept header.
* @since 6867
*/
public static final String XML_STYLE_MIME_TYPES = "application/xml, text/xml, text/plain; q=0.8, application/zip, application/octet-stream; q=0.5";
protected final Map<String, IconPrototype> icons = new HashMap<>();
protected final Map<String, LinePrototype> lines = new HashMap<>();
protected final Map<String, LinemodPrototype> modifiers = new HashMap<>();
protected final Map<String, AreaPrototype> areas = new HashMap<>();
protected final List<IconPrototype> iconsList = new LinkedList<>();
protected final List<LinePrototype> linesList = new LinkedList<>();
protected final List<LinemodPrototype> modifiersList = new LinkedList<>();
protected final List<AreaPrototype> areasList = new LinkedList<>();
public XmlStyleSource(String url, String name, String shortdescription) {
super(url, name, shortdescription);
}
public XmlStyleSource(SourceEntry entry) {
super(entry);
}
@Override
protected void init() {
super.init();
icons.clear();
lines.clear();
modifiers.clear();
areas.clear();
iconsList.clear();
linesList.clear();
modifiersList.clear();
areasList.clear();
}
@Override
public void loadStyleSource() {
init();
try {
try (
InputStream in = getSourceInputStream();
InputStreamReader reader = new InputStreamReader(in, StandardCharsets.UTF_8)
) {
XmlObjectParser parser = new XmlObjectParser(new XmlStyleSourceHandler(this));
parser.startWithValidation(reader,
Main.getXMLBase()+"/mappaint-style-1.0",
"resource://data/mappaint-style.xsd");
while (parser.hasNext());
}
} catch (IOException e) {
Main.warn(tr("Failed to load Mappaint styles from ''{0}''. Exception was: {1}", url, e.toString()));
Main.error(e);
logError(e);
} catch (SAXParseException e) {
Main.warn(tr("Failed to parse Mappaint styles from ''{0}''. Error was: [{1}:{2}] {3}", url, e.getLineNumber(), e.getColumnNumber(), e.getMessage()));
Main.error(e);
logError(e);
} catch (SAXException e) {
Main.warn(tr("Failed to parse Mappaint styles from ''{0}''. Error was: {1}", url, e.getMessage()));
Main.error(e);
logError(e);
}
}
@Override
public InputStream getSourceInputStream() throws IOException {
CachedFile cf = getCachedFile();
InputStream zip = cf.findZipEntryInputStream("xml", "style");
if (zip != null) {
zipIcons = cf.getFile();
return zip;
} else {
zipIcons = null;
return cf.getInputStream();
}
}
@Override
public CachedFile getCachedFile() throws IOException {
return new CachedFile(url).setHttpAccept(XML_STYLE_MIME_TYPES);
}
private static class WayPrototypesRecord {
public LinePrototype line;
public List<LinemodPrototype> linemods;
public AreaPrototype area;
}
private <T extends Prototype> T update(T current, T candidate, Double scale, MultiCascade mc) {
if (requiresUpdate(current, candidate, scale, mc))
return candidate;
else
return current;
}
/**
* checks whether a certain match is better than the current match
* @param current can be null
* @param candidate the new Prototype that could be used instead
* @param scale ignored if null, otherwise checks if scale is within the range of candidate
* @param mc side effect: update the valid region for the current MultiCascade
*/
private boolean requiresUpdate(Prototype current, Prototype candidate, Double scale, MultiCascade mc) {
if (current == null || candidate.priority >= current.priority) {
if (scale == null)
return true;
if (candidate.range.contains(scale)) {
mc.range = Range.cut(mc.range, candidate.range);
return true;
} else {
mc.range = mc.range.reduceAround(scale, candidate.range);
return false;
}
}
return false;
}
private IconPrototype getNode(OsmPrimitive primitive, Double scale, MultiCascade mc) {
IconPrototype icon = null;
for (String key : primitive.keySet()) {
String val = primitive.get(key);
IconPrototype p;
if ((p = icons.get("n" + key + "=" + val)) != null) {
icon = update(icon, p, scale, mc);
}
if ((p = icons.get("b" + key + "=" + OsmUtils.getNamedOsmBoolean(val))) != null) {
icon = update(icon, p, scale, mc);
}
if ((p = icons.get("x" + key)) != null) {
icon = update(icon, p, scale, mc);
}
}
for (IconPrototype s : iconsList) {
if (s.check(primitive))
{
icon = update(icon, s, scale, mc);
}
}
return icon;
}
/**
* @param closed The primitive is a closed way or we pretend it is closed.
* This is useful for multipolygon relations and outer ways of untagged
* multipolygon relations.
*/
private void get(OsmPrimitive primitive, boolean closed, WayPrototypesRecord p, Double scale, MultiCascade mc) {
String lineIdx = null;
HashMap<String, LinemodPrototype> overlayMap = new HashMap<>();
boolean isNotArea = primitive.isKeyFalse("area");
for (String key : primitive.keySet()) {
String val = primitive.get(key);
AreaPrototype styleArea;
LinePrototype styleLine;
LinemodPrototype styleLinemod;
String idx = "n" + key + "=" + val;
if ((styleArea = areas.get(idx)) != null && (closed || !styleArea.closed) && !isNotArea) {
p.area = update(p.area, styleArea, scale, mc);
}
if ((styleLine = lines.get(idx)) != null) {
if (requiresUpdate(p.line, styleLine, scale, mc)) {
p.line = styleLine;
lineIdx = idx;
}
}
if ((styleLinemod = modifiers.get(idx)) != null) {
if (requiresUpdate(null, styleLinemod, scale, mc)) {
overlayMap.put(idx, styleLinemod);
}
}
idx = "b" + key + "=" + OsmUtils.getNamedOsmBoolean(val);
if ((styleArea = areas.get(idx)) != null && (closed || !styleArea.closed) && !isNotArea) {
p.area = update(p.area, styleArea, scale, mc);
}
if ((styleLine = lines.get(idx)) != null) {
if (requiresUpdate(p.line, styleLine, scale, mc)) {
p.line = styleLine;
lineIdx = idx;
}
}
if ((styleLinemod = modifiers.get(idx)) != null) {
if (requiresUpdate(null, styleLinemod, scale, mc)) {
overlayMap.put(idx, styleLinemod);
}
}
idx = "x" + key;
if ((styleArea = areas.get(idx)) != null && (closed || !styleArea.closed) && !isNotArea) {
p.area = update(p.area, styleArea, scale, mc);
}
if ((styleLine = lines.get(idx)) != null) {
if (requiresUpdate(p.line, styleLine, scale, mc)) {
p.line = styleLine;
lineIdx = idx;
}
}
if ((styleLinemod = modifiers.get(idx)) != null) {
if (requiresUpdate(null, styleLinemod, scale, mc)) {
overlayMap.put(idx, styleLinemod);
}
}
}
for (AreaPrototype s : areasList) {
if ((closed || !s.closed) && !isNotArea && s.check(primitive)) {
p.area = update(p.area, s, scale, mc);
}
}
for (LinePrototype s : linesList) {
if (s.check(primitive)) {
p.line = update(p.line, s, scale, mc);
}
}
for (LinemodPrototype s : modifiersList) {
if (s.check(primitive)) {
if (requiresUpdate(null, s, scale, mc)) {
overlayMap.put(s.getCode(), s);
}
}
}
overlayMap.remove(lineIdx); // do not use overlay if linestyle is from the same rule (example: railway=tram)
if (!overlayMap.isEmpty()) {
List<LinemodPrototype> tmp = new LinkedList<>();
if (p.linemods != null) {
tmp.addAll(p.linemods);
}
tmp.addAll(overlayMap.values());
Collections.sort(tmp);
p.linemods = tmp;
}
}
public void add(XmlCondition c, Collection<XmlCondition> conditions, Prototype prot) {
if(conditions != null)
{
prot.conditions = conditions;
if (prot instanceof IconPrototype) {
iconsList.add((IconPrototype) prot);
} else if (prot instanceof LinemodPrototype) {
modifiersList.add((LinemodPrototype) prot);
} else if (prot instanceof LinePrototype) {
linesList.add((LinePrototype) prot);
} else if (prot instanceof AreaPrototype) {
areasList.add((AreaPrototype) prot);
} else
throw new RuntimeException();
}
else {
String key = c.getKey();
prot.code = key;
if (prot instanceof IconPrototype) {
icons.put(key, (IconPrototype) prot);
} else if (prot instanceof LinemodPrototype) {
modifiers.put(key, (LinemodPrototype) prot);
} else if (prot instanceof LinePrototype) {
lines.put(key, (LinePrototype) prot);
} else if (prot instanceof AreaPrototype) {
areas.put(key, (AreaPrototype) prot);
} else
throw new RuntimeException();
}
}
@Override
public void apply(MultiCascade mc, OsmPrimitive osm, double scale, OsmPrimitive multipolyOuterWay, boolean pretendWayIsClosed) {
Cascade def = mc.getOrCreateCascade("default");
boolean useMinMaxScale = Main.pref.getBoolean("mappaint.zoomLevelDisplay", false);
if (osm instanceof Node || (osm instanceof Relation && "restriction".equals(osm.get("type")))) {
IconPrototype icon = getNode(osm, (useMinMaxScale ? scale : null), mc);
if (icon != null) {
def.put(ICON_IMAGE, icon.icon);
if (osm instanceof Node) {
if (icon.annotate != null) {
if (icon.annotate) {
def.put(TEXT, Keyword.AUTO);
} else {
def.remove(TEXT);
}
}
}
}
} else if (osm instanceof Way || (osm instanceof Relation && ((Relation)osm).isMultipolygon())) {
WayPrototypesRecord p = new WayPrototypesRecord();
get(osm, pretendWayIsClosed || !(osm instanceof Way) || ((Way) osm).isClosed(), p, (useMinMaxScale ? scale : null), mc);
if (p.line != null) {
def.put(WIDTH, new Float(p.line.getWidth()));
def.putOrClear(REAL_WIDTH, p.line.realWidth != null ? new Float(p.line.realWidth) : null);
def.putOrClear(COLOR, p.line.color);
if (p.line.color != null) {
int alpha = p.line.color.getAlpha();
if (alpha != 255) {
def.put(OPACITY, Utils.color_int2float(alpha));
}
}
def.putOrClear(DASHES, p.line.getDashed());
def.putOrClear(DASHES_BACKGROUND_COLOR, p.line.dashedColor);
}
Float refWidth = def.get(WIDTH, null, Float.class);
if (refWidth != null && p.linemods != null) {
int numOver = 0, numUnder = 0;
while (mc.hasLayer(String.format("over_%d", ++numOver)));
while (mc.hasLayer(String.format("under_%d", ++numUnder)));
for (LinemodPrototype mod : p.linemods) {
Cascade c;
if (mod.over) {
String layer = String.format("over_%d", numOver);
c = mc.getOrCreateCascade(layer);
c.put(OBJECT_Z_INDEX, new Float(numOver));
++numOver;
} else {
String layer = String.format("under_%d", numUnder);
c = mc.getOrCreateCascade(layer);
c.put(OBJECT_Z_INDEX, new Float(-numUnder));
++numUnder;
}
c.put(WIDTH, new Float(mod.getWidth(refWidth)));
c.putOrClear(COLOR, mod.color);
if (mod.color != null) {
int alpha = mod.color.getAlpha();
if (alpha != 255) {
c.put(OPACITY, Utils.color_int2float(alpha));
}
}
c.putOrClear(DASHES, mod.getDashed());
c.putOrClear(DASHES_BACKGROUND_COLOR, mod.dashedColor);
}
}
if (multipolyOuterWay != null) {
WayPrototypesRecord p2 = new WayPrototypesRecord();
get(multipolyOuterWay, true, p2, (useMinMaxScale ? scale : null), mc);
if (Objects.equals(p.area, p2.area)) {
p.area = null;
}
}
if (p.area != null) {
def.putOrClear(FILL_COLOR, p.area.color);
def.putOrClear(TEXT_POSITION, Keyword.CENTER);
def.putOrClear(TEXT, Keyword.AUTO);
def.remove(FILL_IMAGE);
}
}
}
}