// License: GPL. For details, see LICENSE file.
package org.openstreetmap.josm.gui.mappaint;
import java.awt.Font;
import java.util.HashMap;
import java.util.Map;
import org.openstreetmap.josm.Main;
import org.openstreetmap.josm.data.osm.OsmPrimitive;
import org.openstreetmap.josm.data.osm.visitor.paint.MapPaintSettings;
import org.openstreetmap.josm.data.osm.visitor.paint.StyledMapRenderer;
import org.openstreetmap.josm.gui.mappaint.mapcss.Instruction.RelativeFloat;
public abstract class ElemStyle implements StyleKeys {
protected static final String[] ICON_KEYS = {"icon-image", "icon-width", "icon-height", "icon-opacity"};
protected static final String[] REPEAT_IMAGE_KEYS = {"repeat-image", "repeat-image-width", "repeat-image-height", "repeat-image-opacity"};
public float major_z_index;
public float z_index;
public float object_z_index;
public boolean isModifier; // false, if style can serve as main style for the
// primitive; true, if it is a highlight or modifier
public ElemStyle(float major_z_index, float z_index, float object_z_index, boolean isModifier) {
this.major_z_index = major_z_index;
this.z_index = z_index;
this.object_z_index = object_z_index;
this.isModifier = isModifier;
}
protected ElemStyle(Cascade c, float default_major_z_index) {
major_z_index = c.get("major-z-index", default_major_z_index, Float.class);
z_index = c.get(Z_INDEX, 0f, Float.class);
object_z_index = c.get(OBJECT_Z_INDEX, 0f, Float.class);
isModifier = c.get(MODIFIER, false, Boolean.class);
}
/**
* draws a primitive
* @param primitive
* @param paintSettings
* @param painter
* @param selected true, if primitive is selected
* @param member true, if primitive is not selected and member of a selected relation
*/
public abstract void paintPrimitive(OsmPrimitive primitive, MapPaintSettings paintSettings, StyledMapRenderer painter, boolean selected, boolean member);
public boolean isProperLineStyle() {
return false;
}
/**
* Get a property value of type Width
* @param c the cascade
* @param key property key for the width value
* @param relativeTo reference width. Only needed, when relative width syntax
* is used, e.g. "+4".
*/
protected static Float getWidth(Cascade c, String key, Float relativeTo) {
Float width = c.get(key, null, Float.class, true);
if (width != null) {
if (width > 0)
return width;
} else {
Keyword widthKW = c.get(key, null, Keyword.class, true);
if (Keyword.THINNEST.equals(widthKW))
return 0f;
if (Keyword.DEFAULT.equals(widthKW))
return (float) MapPaintSettings.INSTANCE.getDefaultSegmentWidth();
if (relativeTo != null) {
RelativeFloat width_rel = c.get(key, null, RelativeFloat.class, true);
if (width_rel != null)
return relativeTo + width_rel.val;
}
}
return null;
}
/* ------------------------------------------------------------------------------- */
/* cached values */
/* ------------------------------------------------------------------------------- */
/*
* Two preference values and the set of created fonts are cached in order to avoid
* expensive lookups and to avoid too many font objects
*
* FIXME: cached preference values are not updated if the user changes them during
* a JOSM session. Should have a listener listening to preference changes.
*/
private static volatile String DEFAULT_FONT_NAME = null;
private static volatile Float DEFAULT_FONT_SIZE = null;
private static final Object lock = new Object();
// thread save access (double-checked locking)
private static Float getDefaultFontSize() {
Float s = DEFAULT_FONT_SIZE;
if (s == null) {
synchronized (lock) {
s = DEFAULT_FONT_SIZE;
if (s == null) {
DEFAULT_FONT_SIZE = s = (float) Main.pref.getInteger("mappaint.fontsize", 8);
}
}
}
return s;
}
private static String getDefaultFontName() {
String n = DEFAULT_FONT_NAME;
if (n == null) {
synchronized (lock) {
n = DEFAULT_FONT_NAME;
if (n == null) {
DEFAULT_FONT_NAME = n = Main.pref.get("mappaint.font", "Helvetica");
}
}
}
return n;
}
private static class FontDescriptor {
public String name;
public int style;
public int size;
public FontDescriptor(String name, int style, int size){
this.name = name;
this.style = style;
this.size = size;
}
@Override
public int hashCode() {
final int prime = 31;
int result = 1;
result = prime * result + ((name == null) ? 0 : name.hashCode());
result = prime * result + size;
result = prime * result + style;
return result;
}
@Override
public boolean equals(Object obj) {
if (this == obj)
return true;
if (obj == null)
return false;
if (getClass() != obj.getClass())
return false;
FontDescriptor other = (FontDescriptor) obj;
if (name == null) {
if (other.name != null)
return false;
} else if (!name.equals(other.name))
return false;
if (size != other.size)
return false;
if (style != other.style)
return false;
return true;
}
}
private static final Map<FontDescriptor, Font> FONT_MAP = new HashMap<>();
private static Font getCachedFont(FontDescriptor fd) {
Font f = FONT_MAP.get(fd);
if (f != null) return f;
f = new Font(fd.name, fd.style, fd.size);
FONT_MAP.put(fd, f);
return f;
}
private static Font getCachedFont(String name, int style, int size){
return getCachedFont(new FontDescriptor(name, style, size));
}
protected static Font getFont(Cascade c) {
String name = c.get("font-family", getDefaultFontName(), String.class);
float size = c.get("font-size", getDefaultFontSize(), Float.class);
int weight = Font.PLAIN;
if ("bold".equalsIgnoreCase(c.get("font-weight", null, String.class))) {
weight = Font.BOLD;
}
int style = Font.PLAIN;
if ("italic".equalsIgnoreCase(c.get("font-style", null, String.class))) {
style = Font.ITALIC;
}
return getCachedFont(name, style | weight, Math.round(size));
}
@Override
public boolean equals(Object o) {
if (!(o instanceof ElemStyle))
return false;
ElemStyle s = (ElemStyle) o;
return major_z_index == s.major_z_index &&
z_index == s.z_index &&
object_z_index == s.object_z_index &&
isModifier == s.isModifier;
}
@Override
public int hashCode() {
int hash = 5;
hash = 41 * hash + Float.floatToIntBits(this.major_z_index);
hash = 41 * hash + Float.floatToIntBits(this.z_index);
hash = 41 * hash + Float.floatToIntBits(this.object_z_index);
hash = 41 * hash + (isModifier ? 1 : 0);
return hash;
}
@Override
public String toString() {
return String.format("z_idx=[%s/%s/%s] ", major_z_index, z_index, object_z_index) + (isModifier ? "modifier " : "");
}
}