1 | // License: GPL. For details, see LICENSE file.
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2 | package org.openstreetmap.josm.gui.mappaint;
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3 |
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4 | import java.awt.Font;
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5 | import java.util.HashMap;
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6 | import java.util.Map;
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7 |
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8 | import org.openstreetmap.josm.Main;
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9 | import org.openstreetmap.josm.data.osm.OsmPrimitive;
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10 | import org.openstreetmap.josm.data.osm.visitor.paint.MapPaintSettings;
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11 | import org.openstreetmap.josm.data.osm.visitor.paint.StyledMapRenderer;
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12 | import org.openstreetmap.josm.gui.mappaint.mapcss.Instruction.RelativeFloat;
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13 |
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14 | public abstract class ElemStyle implements StyleKeys {
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15 |
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16 | protected static final int ICON_IMAGE_IDX = 0;
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17 | protected static final int ICON_WIDTH_IDX = 1;
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18 | protected static final int ICON_HEIGHT_IDX = 2;
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19 | protected static final int ICON_OPACITY_IDX = 3;
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20 | protected static final int ICON_OFFSET_X_IDX = 4;
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21 | protected static final int ICON_OFFSET_Y_IDX = 5;
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22 | public static final String[] ICON_KEYS = {ICON_IMAGE, ICON_WIDTH, ICON_HEIGHT, ICON_OPACITY, ICON_OFFSET_X, ICON_OFFSET_Y};
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23 | public static final String[] REPEAT_IMAGE_KEYS = {REPEAT_IMAGE, REPEAT_IMAGE_WIDTH, REPEAT_IMAGE_HEIGHT, REPEAT_IMAGE_OPACITY, null, null};
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24 |
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25 | public float major_z_index;
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26 | public float z_index;
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27 | public float object_z_index;
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28 | public boolean isModifier; // false, if style can serve as main style for the
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29 | // primitive; true, if it is a highlight or modifier
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30 |
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31 | public ElemStyle(float major_z_index, float z_index, float object_z_index, boolean isModifier) {
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32 | this.major_z_index = major_z_index;
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33 | this.z_index = z_index;
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34 | this.object_z_index = object_z_index;
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35 | this.isModifier = isModifier;
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36 | }
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37 |
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38 | protected ElemStyle(Cascade c, float default_major_z_index) {
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39 | major_z_index = c.get(MAJOR_Z_INDEX, default_major_z_index, Float.class);
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40 | z_index = c.get(Z_INDEX, 0f, Float.class);
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41 | object_z_index = c.get(OBJECT_Z_INDEX, 0f, Float.class);
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42 | isModifier = c.get(MODIFIER, false, Boolean.class);
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43 | }
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44 |
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45 | /**
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46 | * draws a primitive
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47 | * @param primitive
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48 | * @param paintSettings
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49 | * @param painter
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50 | * @param selected true, if primitive is selected
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51 | * @param outermember true, if primitive is not selected and outer member of a selected multipolygon relation
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52 | * @param member true, if primitive is not selected and member of a selected relation
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53 | */
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54 | public abstract void paintPrimitive(OsmPrimitive primitive, MapPaintSettings paintSettings, StyledMapRenderer painter,
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55 | boolean selected, boolean outermember, boolean member);
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56 |
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57 | public boolean isProperLineStyle() {
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58 | return false;
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59 | }
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60 |
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61 | /**
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62 | * Get a property value of type Width
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63 | * @param c the cascade
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64 | * @param key property key for the width value
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65 | * @param relativeTo reference width. Only needed, when relative width syntax
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66 | * is used, e.g. "+4".
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67 | */
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68 | protected static Float getWidth(Cascade c, String key, Float relativeTo) {
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69 | Float width = c.get(key, null, Float.class, true);
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70 | if (width != null) {
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71 | if (width > 0)
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72 | return width;
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73 | } else {
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74 | Keyword widthKW = c.get(key, null, Keyword.class, true);
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75 | if (Keyword.THINNEST.equals(widthKW))
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76 | return 0f;
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77 | if (Keyword.DEFAULT.equals(widthKW))
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78 | return (float) MapPaintSettings.INSTANCE.getDefaultSegmentWidth();
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79 | if (relativeTo != null) {
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80 | RelativeFloat width_rel = c.get(key, null, RelativeFloat.class, true);
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81 | if (width_rel != null)
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82 | return relativeTo + width_rel.val;
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83 | }
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84 | }
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85 | return null;
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86 | }
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87 |
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88 | /* ------------------------------------------------------------------------------- */
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89 | /* cached values */
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90 | /* ------------------------------------------------------------------------------- */
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91 | /*
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92 | * Two preference values and the set of created fonts are cached in order to avoid
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93 | * expensive lookups and to avoid too many font objects
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94 | *
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95 | * FIXME: cached preference values are not updated if the user changes them during
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96 | * a JOSM session. Should have a listener listening to preference changes.
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97 | */
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98 | private static volatile String DEFAULT_FONT_NAME = null;
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99 | private static volatile Float DEFAULT_FONT_SIZE = null;
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100 | private static final Object lock = new Object();
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101 |
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102 | // thread save access (double-checked locking)
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103 | private static Float getDefaultFontSize() {
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104 | Float s = DEFAULT_FONT_SIZE;
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105 | if (s == null) {
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106 | synchronized (lock) {
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107 | s = DEFAULT_FONT_SIZE;
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108 | if (s == null) {
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109 | DEFAULT_FONT_SIZE = s = (float) Main.pref.getInteger("mappaint.fontsize", 8);
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110 | }
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111 | }
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112 | }
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113 | return s;
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114 | }
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115 |
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116 | private static String getDefaultFontName() {
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117 | String n = DEFAULT_FONT_NAME;
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118 | if (n == null) {
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119 | synchronized (lock) {
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120 | n = DEFAULT_FONT_NAME;
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121 | if (n == null) {
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122 | DEFAULT_FONT_NAME = n = Main.pref.get("mappaint.font", "Droid Sans");
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123 | }
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124 | }
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125 | }
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126 | return n;
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127 | }
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128 |
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129 | private static class FontDescriptor {
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130 | public String name;
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131 | public int style;
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132 | public int size;
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133 |
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134 | public FontDescriptor(String name, int style, int size){
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135 | this.name = name;
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136 | this.style = style;
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137 | this.size = size;
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138 | }
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139 |
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140 | @Override
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141 | public int hashCode() {
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142 | final int prime = 31;
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143 | int result = 1;
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144 | result = prime * result + ((name == null) ? 0 : name.hashCode());
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145 | result = prime * result + size;
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146 | result = prime * result + style;
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147 | return result;
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148 | }
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149 | @Override
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150 | public boolean equals(Object obj) {
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151 | if (this == obj)
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152 | return true;
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153 | if (obj == null)
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154 | return false;
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155 | if (getClass() != obj.getClass())
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156 | return false;
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157 | FontDescriptor other = (FontDescriptor) obj;
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158 | if (name == null) {
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159 | if (other.name != null)
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160 | return false;
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161 | } else if (!name.equals(other.name))
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162 | return false;
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163 | if (size != other.size)
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164 | return false;
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165 | if (style != other.style)
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166 | return false;
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167 | return true;
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168 | }
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169 | }
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170 |
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171 | private static final Map<FontDescriptor, Font> FONT_MAP = new HashMap<>();
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172 | private static Font getCachedFont(FontDescriptor fd) {
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173 | Font f = FONT_MAP.get(fd);
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174 | if (f != null) return f;
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175 | f = new Font(fd.name, fd.style, fd.size);
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176 | FONT_MAP.put(fd, f);
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177 | return f;
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178 | }
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179 |
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180 | private static Font getCachedFont(String name, int style, int size){
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181 | return getCachedFont(new FontDescriptor(name, style, size));
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182 | }
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183 |
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184 | protected static Font getFont(Cascade c, String s) {
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185 | String name = c.get(FONT_FAMILY, getDefaultFontName(), String.class);
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186 | float size = c.get(FONT_SIZE, getDefaultFontSize(), Float.class);
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187 | int weight = Font.PLAIN;
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188 | if ("bold".equalsIgnoreCase(c.get(FONT_WEIGHT, null, String.class))) {
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189 | weight = Font.BOLD;
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190 | }
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191 | int style = Font.PLAIN;
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192 | if ("italic".equalsIgnoreCase(c.get(FONT_STYLE, null, String.class))) {
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193 | style = Font.ITALIC;
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194 | }
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195 | Font f = getCachedFont(name, style | weight, Math.round(size));
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196 | if (f.canDisplayUpTo(s) == -1)
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197 | return f;
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198 | else {
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199 | // fallback if the string contains characters that cannot be
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200 | // rendered by the selected font
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201 | return getCachedFont("SansSerif", style | weight, Math.round(size));
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202 | }
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203 | }
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204 |
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205 | @Override
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206 | public boolean equals(Object o) {
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207 | if (!(o instanceof ElemStyle))
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208 | return false;
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209 | ElemStyle s = (ElemStyle) o;
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210 | return major_z_index == s.major_z_index &&
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211 | z_index == s.z_index &&
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212 | object_z_index == s.object_z_index &&
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213 | isModifier == s.isModifier;
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214 | }
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215 |
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216 | @Override
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217 | public int hashCode() {
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218 | int hash = 5;
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219 | hash = 41 * hash + Float.floatToIntBits(this.major_z_index);
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220 | hash = 41 * hash + Float.floatToIntBits(this.z_index);
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221 | hash = 41 * hash + Float.floatToIntBits(this.object_z_index);
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222 | hash = 41 * hash + (isModifier ? 1 : 0);
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223 | return hash;
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224 | }
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225 |
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226 | @Override
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227 | public String toString() {
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228 | return String.format("z_idx=[%s/%s/%s] ", major_z_index, z_index, object_z_index) + (isModifier ? "modifier " : "");
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229 | }
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230 | }
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