1 | // License: GPL. For details, see LICENSE file.
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2 | package org.openstreetmap.josm.gui.dialogs.layer;
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3 |
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4 | import static org.openstreetmap.josm.tools.I18n.tr;
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5 |
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6 | import java.awt.Component;
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7 | import java.awt.GridBagLayout;
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8 | import java.awt.event.ActionEvent;
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9 | import java.util.ArrayList;
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10 | import java.util.Collection;
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11 | import java.util.List;
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12 |
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13 | import javax.swing.AbstractAction;
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14 | import javax.swing.BorderFactory;
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15 | import javax.swing.ImageIcon;
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16 | import javax.swing.JCheckBox;
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17 | import javax.swing.JLabel;
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18 | import javax.swing.JMenuItem;
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19 | import javax.swing.JPanel;
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20 | import javax.swing.JPopupMenu;
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21 | import javax.swing.JSlider;
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22 | import javax.swing.event.ChangeEvent;
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23 | import javax.swing.event.ChangeListener;
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24 |
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25 | import org.openstreetmap.josm.Main;
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26 | import org.openstreetmap.josm.gui.SideButton;
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27 | import org.openstreetmap.josm.gui.dialogs.IEnabledStateUpdating;
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28 | import org.openstreetmap.josm.gui.dialogs.LayerListDialog.LayerListModel;
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29 | import org.openstreetmap.josm.gui.layer.ImageryLayer;
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30 | import org.openstreetmap.josm.gui.layer.Layer;
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31 | import org.openstreetmap.josm.gui.layer.Layer.LayerAction;
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32 | import org.openstreetmap.josm.gui.layer.imagery.ImageryFilterSettings;
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33 | import org.openstreetmap.josm.tools.GBC;
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34 | import org.openstreetmap.josm.tools.ImageProvider;
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35 | import org.openstreetmap.josm.tools.Utils;
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36 |
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37 | /**
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38 | * This is a menu that includes all settings for the layer visibility. It combines gamma/opacity sliders and the visible-checkbox.
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39 | *
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40 | * @author Michael Zangl
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41 | */
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42 | public final class LayerVisibilityAction extends AbstractAction implements IEnabledStateUpdating, LayerAction {
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43 | private static final int SLIDER_STEPS = 100;
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44 | private static final double MAX_SHARPNESS_FACTOR = 2;
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45 | private static final double MAX_COLORFUL_FACTOR = 2;
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46 | private final LayerListModel model;
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47 | private final JPopupMenu popup;
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48 | private SideButton sideButton;
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49 | private final JCheckBox visibilityCheckbox;
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50 | final OpacitySlider opacitySlider = new OpacitySlider();
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51 | private final ArrayList<FilterSlider<?>> sliders = new ArrayList<>();
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52 |
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53 | /**
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54 | * Creates a new {@link LayerVisibilityAction}
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55 | * @param model The list to get the selection from.
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56 | */
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57 | public LayerVisibilityAction(LayerListModel model) {
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58 | this.model = model;
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59 | popup = new JPopupMenu();
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60 |
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61 | // just to add a border
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62 | JPanel content = new JPanel();
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63 | popup.add(content);
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64 | content.setBorder(BorderFactory.createEmptyBorder(10, 10, 10, 10));
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65 | content.setLayout(new GridBagLayout());
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66 |
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67 | new ImageProvider("dialogs/layerlist", "visibility").getResource().attachImageIcon(this, true);
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68 | putValue(SHORT_DESCRIPTION, tr("Change visibility of the selected layer."));
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69 |
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70 | visibilityCheckbox = new JCheckBox(tr("Show layer"));
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71 | visibilityCheckbox.addChangeListener(new ChangeListener() {
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72 | @Override
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73 | public void stateChanged(ChangeEvent e) {
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74 | setVisibleFlag(visibilityCheckbox.isSelected());
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75 | }
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76 | });
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77 | content.add(visibilityCheckbox, GBC.eop());
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78 |
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79 | addSlider(content, opacitySlider);
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80 | addSlider(content, new ColorfulnessSlider());
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81 | addSlider(content, new GammaFilterSlider());
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82 | addSlider(content, new SharpnessSlider());
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83 | }
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84 |
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85 | private void addSlider(JPanel content, FilterSlider<?> slider) {
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86 | content.add(new JLabel(slider.getIcon()), GBC.std().span(1, 2).insets(0, 0, 5, 0));
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87 | content.add(new JLabel(slider.getLabel()), GBC.eol());
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88 | content.add(slider, GBC.eop());
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89 | sliders.add(slider);
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90 | }
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91 |
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92 | protected void setVisibleFlag(boolean visible) {
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93 | for (Layer l : model.getSelectedLayers()) {
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94 | l.setVisible(visible);
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95 | }
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96 | updateValues();
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97 | }
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98 |
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99 | @Override
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100 | public void actionPerformed(ActionEvent e) {
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101 | updateValues();
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102 | if (e.getSource() == sideButton) {
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103 | popup.show(sideButton, 0, sideButton.getHeight());
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104 | } else {
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105 | // Action can be trigger either by opacity button or by popup menu (in case toggle buttons are hidden).
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106 | // In that case, show it in the middle of screen (because opacityButton is not visible)
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107 | popup.show(Main.parent, Main.parent.getWidth() / 2, (Main.parent.getHeight() - popup.getHeight()) / 2);
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108 | }
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109 | }
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110 |
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111 | protected void updateValues() {
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112 | List<Layer> layers = model.getSelectedLayers();
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113 |
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114 | visibilityCheckbox.setEnabled(!layers.isEmpty());
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115 | boolean allVisible = true;
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116 | boolean allHidden = true;
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117 | for (Layer l : layers) {
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118 | allVisible &= l.isVisible();
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119 | allHidden &= !l.isVisible();
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120 | }
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121 | // TODO: Indicate tristate.
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122 | visibilityCheckbox.setSelected(allVisible && !allHidden);
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123 |
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124 | for (FilterSlider<?> slider : sliders) {
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125 | slider.updateSlider(layers, allHidden);
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126 | }
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127 | }
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128 |
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129 | @Override
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130 | public boolean supportLayers(List<Layer> layers) {
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131 | return !layers.isEmpty();
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132 | }
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133 |
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134 | @Override
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135 | public Component createMenuComponent() {
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136 | return new JMenuItem(this);
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137 | }
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138 |
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139 | @Override
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140 | public void updateEnabledState() {
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141 | setEnabled(!model.getSelectedLayers().isEmpty());
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142 | }
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143 |
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144 | /**
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145 | * Sets the corresponding side button.
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146 | * @param sideButton the corresponding side button
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147 | */
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148 | public void setCorrespondingSideButton(SideButton sideButton) {
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149 | this.sideButton = sideButton;
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150 | }
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151 |
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152 | /**
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153 | * This is a slider for a filter value.
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154 | * @author Michael Zangl
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155 | *
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156 | * @param <T> The layer type.
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157 | */
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158 | private abstract class FilterSlider<T extends Layer> extends JSlider {
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159 | private final double minValue;
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160 | private final double maxValue;
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161 | private final Class<T> layerClassFilter;
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162 |
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163 | /**
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164 | * Create a new filter slider.
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165 | * @param minValue The minimum value to map to the left side.
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166 | * @param maxValue The maximum value to map to the right side.
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167 | * @param layerClassFilter The type of layer influenced by this filter.
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168 | */
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169 | FilterSlider(double minValue, double maxValue, Class<T> layerClassFilter) {
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170 | super(JSlider.HORIZONTAL);
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171 | this.minValue = minValue;
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172 | this.maxValue = maxValue;
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173 | this.layerClassFilter = layerClassFilter;
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174 | setMaximum(SLIDER_STEPS);
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175 | int tick = convertFromRealValue(1);
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176 | setMinorTickSpacing(tick);
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177 | setMajorTickSpacing(tick);
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178 | setPaintTicks(true);
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179 |
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180 | addChangeListener(new ChangeListener() {
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181 | @Override
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182 | public void stateChanged(ChangeEvent e) {
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183 | onStateChanged();
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184 | }
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185 | });
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186 | }
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187 |
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188 | /**
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189 | * Called whenever the state of the slider was changed.
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190 | * @see #getValueIsAdjusting()
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191 | * @see #getRealValue()
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192 | */
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193 | protected void onStateChanged() {
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194 | Collection<T> layers = filterLayers(model.getSelectedLayers());
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195 | for (T layer : layers) {
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196 | applyValueToLayer(layer);
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197 | }
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198 | }
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199 |
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200 | protected void applyValueToLayer(T layer) {
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201 | }
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202 |
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203 | protected double getRealValue() {
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204 | return convertToRealValue(getValue());
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205 | }
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206 |
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207 | protected double convertToRealValue(int value) {
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208 | double s = (double) value / SLIDER_STEPS;
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209 | return s * maxValue + (1-s) * minValue;
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210 | }
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211 |
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212 | protected void setRealValue(double value) {
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213 | setValue(convertFromRealValue(value));
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214 | }
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215 |
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216 | protected int convertFromRealValue(double value) {
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217 | int i = (int) ((value - minValue) / (maxValue - minValue) * SLIDER_STEPS + .5);
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218 | if (i < getMinimum()) {
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219 | return getMinimum();
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220 | } else if (i > getMaximum()) {
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221 | return getMaximum();
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222 | } else {
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223 | return i;
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224 | }
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225 | }
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226 |
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227 | public abstract ImageIcon getIcon();
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228 |
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229 | public abstract String getLabel();
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230 |
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231 | public void updateSlider(List<Layer> layers, boolean allHidden) {
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232 | Collection<? extends Layer> usedLayers = filterLayers(layers);
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233 | if (usedLayers.isEmpty() || allHidden) {
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234 | setEnabled(false);
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235 | } else {
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236 | setEnabled(true);
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237 | updateSliderWhileEnabled(usedLayers, allHidden);
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238 | }
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239 | }
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240 |
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241 | protected Collection<T> filterLayers(List<Layer> layers) {
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242 | return Utils.filteredCollection(layers, layerClassFilter);
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243 | }
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244 |
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245 | protected abstract void updateSliderWhileEnabled(Collection<? extends Layer> usedLayers, boolean allHidden);
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246 | }
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247 |
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248 | /**
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249 | * This slider allows you to change the opacity of a layer.
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250 | *
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251 | * @author Michael Zangl
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252 | * @see Layer#setOpacity(double)
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253 | */
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254 | class OpacitySlider extends FilterSlider<Layer> {
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255 | /**
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256 | * Creaate a new {@link OpacitySlider}.
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257 | */
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258 | OpacitySlider() {
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259 | super(0, 1, Layer.class);
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260 | setToolTipText(tr("Adjust opacity of the layer."));
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261 | }
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262 |
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263 | @Override
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264 | protected void onStateChanged() {
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265 | if (getRealValue() <= 0.001 && !getValueIsAdjusting()) {
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266 | setVisibleFlag(false);
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267 | } else {
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268 | super.onStateChanged();
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269 | }
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270 | }
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271 |
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272 | @Override
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273 | protected void applyValueToLayer(Layer layer) {
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274 | layer.setOpacity(getRealValue());
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275 | }
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276 |
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277 | @Override
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278 | protected void updateSliderWhileEnabled(Collection<? extends Layer> usedLayers, boolean allHidden) {
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279 | double opacity = 0;
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280 | for (Layer l : usedLayers) {
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281 | opacity += l.getOpacity();
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282 | }
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283 | opacity /= usedLayers.size();
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284 | if (opacity == 0) {
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285 | opacity = 1;
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286 | setVisibleFlag(true);
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287 | }
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288 | setRealValue(opacity);
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289 | }
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290 |
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291 | @Override
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292 | public String getLabel() {
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293 | return tr("Opacity");
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294 | }
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295 |
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296 | @Override
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297 | public ImageIcon getIcon() {
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298 | return ImageProvider.get("dialogs/layerlist", "transparency");
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299 | }
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300 |
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301 | @Override
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302 | public String toString() {
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303 | return "OpacitySlider [getRealValue()=" + getRealValue() + ']';
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304 | }
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305 | }
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306 |
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307 | /**
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308 | * This slider allows you to change the gamma value of a layer.
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309 | *
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310 | * @author Michael Zangl
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311 | * @see ImageryFilterSettings#setGamma(double)
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312 | */
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313 | private class GammaFilterSlider extends FilterSlider<ImageryLayer> {
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314 |
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315 | /**
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316 | * Create a new {@link GammaFilterSlider}
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317 | */
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318 | GammaFilterSlider() {
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319 | super(-1, 1, ImageryLayer.class);
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320 | setToolTipText(tr("Adjust gamma value of the layer."));
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321 | }
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322 |
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323 | @Override
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324 | protected void updateSliderWhileEnabled(Collection<? extends Layer> usedLayers, boolean allHidden) {
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325 | double gamma = ((ImageryLayer) usedLayers.iterator().next()).getFilterSettings().getGamma();
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326 | setRealValue(mapGammaToInterval(gamma));
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327 | }
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328 |
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329 | @Override
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330 | protected void applyValueToLayer(ImageryLayer layer) {
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331 | layer.getFilterSettings().setGamma(mapIntervalToGamma(getRealValue()));
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332 | }
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333 |
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334 | @Override
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335 | public ImageIcon getIcon() {
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336 | return ImageProvider.get("dialogs/layerlist", "gamma");
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337 | }
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338 |
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339 | @Override
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340 | public String getLabel() {
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341 | return tr("Gamma");
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342 | }
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343 |
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344 | /**
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345 | * Maps a number x from the range (-1,1) to a gamma value.
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346 | * Gamma value is in the range (0, infinity).
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347 | * Gamma values of 3 and 1/3 have opposite effects, so the mapping
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348 | * should be symmetric in that sense.
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349 | * @param x the slider value in the range (-1,1)
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350 | * @return the gamma value
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351 | */
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352 | private double mapIntervalToGamma(double x) {
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353 | // properties of the mapping:
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354 | // g(-1) = 0
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355 | // g(0) = 1
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356 | // g(1) = infinity
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357 | // g(-x) = 1 / g(x)
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358 | return (1 + x) / (1 - x);
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359 | }
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360 |
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361 | private double mapGammaToInterval(double gamma) {
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362 | return (gamma - 1) / (gamma + 1);
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363 | }
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364 | }
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365 |
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366 | /**
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367 | * This slider allows you to change the sharpness of a layer.
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368 | *
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369 | * @author Michael Zangl
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370 | * @see ImageryFilterSettings#setSharpenLevel(double)
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371 | */
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372 | private class SharpnessSlider extends FilterSlider<ImageryLayer> {
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373 |
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374 | /**
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375 | * Creates a new {@link SharpnessSlider}
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376 | */
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377 | SharpnessSlider() {
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378 | super(0, MAX_SHARPNESS_FACTOR, ImageryLayer.class);
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379 | setToolTipText(tr("Adjust sharpness/blur value of the layer."));
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380 | }
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381 |
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382 | @Override
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383 | protected void updateSliderWhileEnabled(Collection<? extends Layer> usedLayers, boolean allHidden) {
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384 | setRealValue(((ImageryLayer) usedLayers.iterator().next()).getFilterSettings().getSharpenLevel());
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385 | }
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386 |
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387 | @Override
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388 | protected void applyValueToLayer(ImageryLayer layer) {
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389 | layer.getFilterSettings().setSharpenLevel(getRealValue());
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390 | }
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391 |
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392 | @Override
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393 | public ImageIcon getIcon() {
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394 | return ImageProvider.get("dialogs/layerlist", "sharpness");
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395 | }
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396 |
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397 | @Override
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398 | public String getLabel() {
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399 | return tr("Sharpness");
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400 | }
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401 | }
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402 |
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403 | /**
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404 | * This slider allows you to change the colorfulness of a layer.
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405 | *
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406 | * @author Michael Zangl
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407 | * @see ImageryFilterSettings#setColorfulness(double)
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408 | */
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409 | private class ColorfulnessSlider extends FilterSlider<ImageryLayer> {
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410 |
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411 | /**
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412 | * Create a new {@link ColorfulnessSlider}
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413 | */
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414 | ColorfulnessSlider() {
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415 | super(0, MAX_COLORFUL_FACTOR, ImageryLayer.class);
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416 | setToolTipText(tr("Adjust colorfulness of the layer."));
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417 | }
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418 |
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419 | @Override
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420 | protected void updateSliderWhileEnabled(Collection<? extends Layer> usedLayers, boolean allHidden) {
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421 | setRealValue(((ImageryLayer) usedLayers.iterator().next()).getFilterSettings().getColorfulness());
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422 | }
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423 |
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424 | @Override
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425 | protected void applyValueToLayer(ImageryLayer layer) {
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426 | layer.getFilterSettings().setColorfulness(getRealValue());
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427 | }
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428 |
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429 | @Override
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430 | public ImageIcon getIcon() {
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431 | return ImageProvider.get("dialogs/layerlist", "colorfulness");
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432 | }
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433 |
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434 | @Override
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435 | public String getLabel() {
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436 | return tr("Colorfulness");
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437 | }
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438 | }
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439 | }
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