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annotate ext/guichan-0.8.1/include/guichan/widgets/slider.hpp @ 32:75b6394ced14

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* remove geometric renderer, its not replaced by the more functional generic renderern * add grouing to generic renderer, probably this should be exported to the client in any way
author spq@33b003aa-7bff-0310-803a-e67f0ece8222
date Fri, 11 Jul 2008 15:37:16 +0000
parents 4a0efb7baf70
children
rev   line source
0
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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1 /* _______ __ __ __ ______ __ __ _______ __ __
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2 * / _____/\ / /\ / /\ / /\ / ____/\ / /\ / /\ / ___ /\ / |\/ /\
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3 * / /\____\// / // / // / // /\___\// /_// / // /\_/ / // , |/ / /
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4 * / / /__ / / // / // / // / / / ___ / // ___ / // /| ' / /
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5 * / /_// /\ / /_// / // / // /_/_ / / // / // /\_/ / // / | / /
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6 * /______/ //______/ //_/ //_____/\ /_/ //_/ //_/ //_/ //_/ /|_/ /
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7 * \______\/ \______\/ \_\/ \_____\/ \_\/ \_\/ \_\/ \_\/ \_\/ \_\/
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8 *
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9 * Copyright (c) 2004 - 2008 Olof Naessén and Per Larsson
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10 *
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11 *
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12 * Per Larsson a.k.a finalman
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13 * Olof Naessén a.k.a jansem/yakslem
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14 *
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15 * Visit: http://guichan.sourceforge.net
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16 *
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17 * License: (BSD)
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18 * Redistribution and use in source and binary forms, with or without
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19 * modification, are permitted provided that the following conditions
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20 * are met:
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21 * 1. Redistributions of source code must retain the above copyright
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22 * notice, this list of conditions and the following disclaimer.
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23 * 2. Redistributions in binary form must reproduce the above copyright
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24 * notice, this list of conditions and the following disclaimer in
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25 * the documentation and/or other materials provided with the
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26 * distribution.
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27 * 3. Neither the name of Guichan nor the names of its contributors may
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28 * be used to endorse or promote products derived from this software
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29 * without specific prior written permission.
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30 *
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31 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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32 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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33 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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34 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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35 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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36 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
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37 * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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38 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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39 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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40 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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41 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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42 */
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43
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44 #ifndef GCN_SLIDER_HPP
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45 #define GCN_SLIDER_HPP
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46
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47 #include "guichan/keylistener.hpp"
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48 #include "guichan/mouselistener.hpp"
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49 #include "guichan/platform.hpp"
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50 #include "guichan/widget.hpp"
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51
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52 namespace gcn
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53 {
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54 /**
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55 * An implementation of a slider where a user can select different values by
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56 * sliding between a start value and an end value of a scale.
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57 *
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58 * If the selected value is changed an action event will be sent to all
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59 * action listeners of the slider.
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60 */
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61 class GCN_CORE_DECLSPEC Slider :
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62 public Widget,
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63 public MouseListener,
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64 public KeyListener
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65 {
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66 public:
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67
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68 /**
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69 * Draw orientations for the slider. A slider can be drawn vertically or
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70 * horizontally.
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71 */
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72 enum Orientation
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73 {
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74 HORIZONTAL = 0,
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75 VERTICAL
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76 };
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77
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78 /**
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79 * Constructor. The default start value of the slider scale is zero.
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80 *
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81 * @param scaleEnd The end value of the slider scale.
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82 */
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83 Slider(double scaleEnd = 1.0);
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84
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85 /**
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86 * Constructor.
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87 *
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88 * @param scaleStart The start value of the slider scale.
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89 * @param scaleEnd The end value of the slider scale.
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90 */
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91 Slider(double scaleStart, double scaleEnd);
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92
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93 /**
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94 * Destructor.
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95 */
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96 virtual ~Slider() { }
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97
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98 /**
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99 * Sets the scale of the slider.
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100 *
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101 * @param scaleStart The start value of the scale.
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102 * @param scaleEnd tThe end of value the scale.
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103 * @see getScaleStart, getScaleEnd
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104 */
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105 void setScale(double scaleStart, double scaleEnd);
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106
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107 /**
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108 * Gets the start value of the scale.
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109 *
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110 * @return The start value of the scale.
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111 * @see setScaleStart, setScale
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112 */
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113 double getScaleStart() const;
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114
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115 /**
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116 * Sets the start value of the scale.
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117 *
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118 * @param scaleStart The start value of the scale.
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119 * @see getScaleStart
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120 */
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121 void setScaleStart(double scaleStart);
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122
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123 /**
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124 * Gets the end value of the scale.
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125 *
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126 * @return The end value of the scale.
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127 * @see setScaleEnd, setScale
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128 */
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129 double getScaleEnd() const;
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130
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131 /**
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132 * Sets the end value of the scale.
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133 *
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134 * @param scaleEnd The end value of the scale.
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135 * @see getScaleEnd
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136 */
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137 void setScaleEnd(double scaleEnd);
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138
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139 /**
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140 * Gets the current selected value.
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141 *
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142 * @return The current selected value.
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143 * @see setValue
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144 */
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145 double getValue() const;
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146
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147 /**
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148 * Sets the current selected value.
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149 *
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150 * @param value The current selected value.
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151 * @see getValue
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152 */
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153 void setValue(double value);
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154
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155 /**
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156 * Sets the length of the marker.
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157 *
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158 * @param length The length for the marker.
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159 * @see getMarkerLength
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160 */
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161 void setMarkerLength(int length);
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162
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163 /**
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164 * Gets the length of the marker.
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165 *
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166 * @return The length of the marker.
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167 * @see setMarkerLength
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168 */
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169 int getMarkerLength() const;
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170
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171 /**
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172 * Sets the orientation of the slider. A slider can be drawn vertically
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173 * or horizontally.
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174 *
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175 * @param orientation The orientation of the slider.
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176 * @see getOrientation
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177 */
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178 void setOrientation(Orientation orientation);
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179
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180 /**
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181 * Gets the orientation of the slider. A slider can be drawn vertically
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182 * or horizontally.
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183 *
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184 * @return The orientation of the slider.
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185 * @see setOrientation
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186 */
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187 Orientation getOrientation() const;
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188
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189 /**
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190 * Sets the step length. The step length is used when the keys LEFT
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191 * and RIGHT are pressed to step in the scale.
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192 *
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193 * @param length The step length.
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194 * @see getStepLength
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195 */
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196 void setStepLength(double length);
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197
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198 /**
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199 * Gets the step length. The step length is used when the keys LEFT
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200 * and RIGHT are pressed to step in the scale.
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201 *
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202 * @return the step length.
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203 * @see setStepLength
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204 */
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205 double getStepLength() const;
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206
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207
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208 // Inherited from Widget
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209
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210 virtual void draw(Graphics* graphics);
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211
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212
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213 // Inherited from MouseListener.
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214
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215 virtual void mousePressed(MouseEvent& mouseEvent);
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216
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217 virtual void mouseDragged(MouseEvent& mouseEvent);
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218
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219 virtual void mouseWheelMovedUp(MouseEvent& mouseEvent);
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220
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221 virtual void mouseWheelMovedDown(MouseEvent& mouseEvent);
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222
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223
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224 // Inherited from KeyListener
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225
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226 virtual void keyPressed(KeyEvent& keyEvent);
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227
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228 protected:
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229 /**
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230 * Draws the marker.
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231 *
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232 * @param graphics A graphics object to draw with.
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233 */
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234 virtual void drawMarker(gcn::Graphics* graphics);
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235
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236 /**
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237 * Converts a marker position to a value in the scale.
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238 *
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239 * @param position The position to convert.
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240 * @return A scale value corresponding to the position.
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241 * @see valueToMarkerPosition
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242 */
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243 virtual double markerPositionToValue(int position) const;
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244
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245 /**
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246 * Converts a value to a marker position.
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247 *
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248 * @param value The value to convert.
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249 * @return A marker position corresponding to the value.
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250 * @see markerPositionToValue
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251 */
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252 virtual int valueToMarkerPosition(double value) const;
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253
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254 /**
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255 * Gets the marker position of the current selected value.
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256 *
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257 * @return The marker position of the current selected value.
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258 */
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259 virtual int getMarkerPosition() const;
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260
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261 /**
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262 * True if the slider is dragged, false otherwise.
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263 */
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264 bool mDragged;
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265
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266 /**
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267 * Holds the current selected value.
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268 */
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269 double mValue;
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270
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271 /**
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272 * Holds the step length. The step length is used when the keys LEFT
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273 * and RIGHT are pressed to step in the scale.
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274 */
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275 double mStepLength;
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276
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277 /**
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278 * Holds the length of the marker.
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279 */
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280 int mMarkerLength;
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281
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282 /**
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283 * Holds the start value of the scale.
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284 */
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285 double mScaleStart;
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286
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287 /**
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288 * Holds the end value of the scale.
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289 */
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290 double mScaleEnd;
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291
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292 /**
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293 * Holds the orientation of the slider. A slider can be drawn
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294 * vertically or horizontally.
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295 */
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296 Orientation mOrientation;
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297 };
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298 }
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299
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300 #endif // end GCN_SLIDER_HPP