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1 /* |
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2 * Copyright (c) 2002 Nokia Corporation and/or its subsidiary(-ies). |
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3 * All rights reserved. |
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4 * This component and the accompanying materials are made available |
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5 * under the terms of "Eclipse Public License v1.0" |
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6 * which accompanies this distribution, and is available |
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7 * at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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8 * |
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9 * Initial Contributors: |
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10 * Nokia Corporation - initial contribution. |
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11 * |
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12 * Contributors: |
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13 * |
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14 * Description: Graphics Extension Library header file |
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15 * |
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16 */ |
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17 |
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18 |
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19 #ifndef GFXGENERALPATH_H |
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20 #define GFXGENERALPATH_H |
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21 |
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22 #include <e32base.h> |
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23 #include <e32std.h> |
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24 |
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25 #include "GfxFloatFixPt.h" |
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26 #include "GfxShape.h" |
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27 #include "GfxAffineTransform.h" |
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28 #include "GfxRectangle2D.h" |
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29 #include "GfxPoint2D.h" |
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30 #include "GfxPathIterator.h" |
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31 |
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32 #include <VG/openvg.h> |
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33 |
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34 |
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35 /** |
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36 * Implementation of a path. |
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37 * |
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38 * @lib Gfx2D.lib |
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39 * @since 1.0 |
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40 */ |
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41 |
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42 class CGfxGeneralPath : public CBase, public MGfxShape |
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43 { |
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44 public: |
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45 /** |
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46 * Two-phase constructor. |
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47 * |
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48 * @since 1.0 |
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49 * @return |
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50 */ |
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51 static CGfxGeneralPath* NewL(); |
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52 |
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53 /** |
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54 * Two-phase constructor. |
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55 * |
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56 * @since 1.0 |
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57 * @return |
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58 */ |
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59 static CGfxGeneralPath* NewLC(); |
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60 |
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61 /** |
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62 * Destructor. |
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63 * |
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64 * @since 1.0 |
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65 * @return |
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66 */ |
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67 virtual ~CGfxGeneralPath(); |
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68 |
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69 /** |
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70 * Signal end of path to connect starting point to ending point. |
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71 * |
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72 * @since 1.0 |
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73 * @return |
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74 */ |
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75 void ClosePathL(); |
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76 |
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77 void RemoveLastPathCommand(); |
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78 |
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79 /** |
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80 * Add a cubic curve. |
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81 * |
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82 * @since 1.0 |
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83 * @param aX1 : x coordinate for control point 1. |
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84 * @param aY1 : y coordinate for control point 1. |
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85 * @param aX2 : x coordinate for control point 2. |
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86 * @param aY2 : y coordinate for control point 2. |
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87 * @param aX3 : x coordinate for control point 3. |
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88 * @param aY3 : y coordinate for control point 3. |
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89 * @param aAbsolute : flag to indicate values are absolute or not. |
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90 * @return |
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91 */ |
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92 void CubicToL( TFloatFixPt& aX1, |
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93 TFloatFixPt& aY1, |
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94 TFloatFixPt& aX2, |
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95 TFloatFixPt& aY2, |
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96 TFloatFixPt& aX3, |
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97 TFloatFixPt& aY3, |
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98 TBool aAbsolute ); |
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99 |
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100 /** |
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101 * Add a line. |
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102 * |
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103 * @since 1.0 |
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104 * @param aX1 : x coordinate of line end point. |
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105 * @param aY1 : y coordinate of line end point. |
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106 * @param aAbsolute : flag to indicate values are absolute or not. |
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107 * @return |
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108 */ |
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109 void LineToL( TFloatFixPt& aX, |
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110 TFloatFixPt& aY, |
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111 TBool aAbsolute ); |
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112 |
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113 /** |
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114 * Start a new sub-path at the given location. |
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115 * |
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116 * @since 1.0 |
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117 * @param aX1 : x coordinate of new location. |
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118 * @param aY1 : y coordinate of new location. |
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119 * @param aAbsolute : flag to indicate values are absolute or not. |
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120 * @return |
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121 */ |
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122 void MoveToL( TFloatFixPt& aX, |
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123 TFloatFixPt& aY, |
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124 TBool aAbsolute ); |
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125 |
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126 /** |
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127 * Add a quadratic curve. |
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128 * |
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129 * @since 1.0 |
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130 * @param aX1 : x coordinate for control point 1. |
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131 * @param aY1 : y coordinate for control point 1. |
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132 * @param aX2 : x coordinate for control point 2. |
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133 * @param aY2 : y coordinate for control point 2. |
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134 * @param aAbsolute : flag to indicate values are absolute or not. |
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135 * @return |
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136 */ |
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137 void QuadToL( TFloatFixPt& aX1, |
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138 TFloatFixPt& aY1, |
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139 TFloatFixPt& aX2, |
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140 TFloatFixPt& aY2, |
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141 TBool aAbsolute ); |
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142 |
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143 /** |
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144 * Add a horizontal line from the current location. |
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145 * |
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146 * @since 1.0 |
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147 * @param aX : x coordinate for ending point. |
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148 * @param aAbsolute : flag to indicate values are absolute or not. |
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149 * @return |
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150 */ |
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151 void HorizonToL( TFloatFixPt& aX, |
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152 TBool aAbsolute ); |
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153 |
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154 /** |
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155 * Add a vertical line from the current location. |
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156 * |
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157 * @since 1.0 |
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158 * @param aY : y coordinate for ending point. |
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159 * @param aAbsolute : flag to indicate values are absolute or not. |
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160 * @return |
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161 */ |
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162 void VertToL( TFloatFixPt& aY, |
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163 TBool aAbsolute ); |
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164 |
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165 /** |
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166 * Add a cubic curve, using the current location as the |
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167 * first control point. |
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168 * |
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169 * @since 1.0 |
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170 * @param aX2 : x coordinate for control point 2. |
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171 * @param aY2 : y coordinate for control point 2. |
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172 * @param aX3 : x coordinate for control point 3. |
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173 * @param aY3 : y coordinate for control point 3. |
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174 * @param aAbsolute : flag to indicate values are absolute or not. |
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175 * @return |
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176 */ |
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177 void ShortCubicToL( TFloatFixPt& aX2, |
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178 TFloatFixPt& aY2, |
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179 TFloatFixPt& aX3, |
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180 TFloatFixPt& aY3, |
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181 TBool aAbsolute ); |
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182 /** |
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183 * Add a quadratic curve, using the current location as the |
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184 * first control point. |
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185 * |
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186 * @since 1.0 |
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187 * @param aX2 : x coordinate for control point 2. |
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188 * @param aY2 : y coordinate for control point 2. |
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189 * @param aAbsolute : flag to indicate values are absolute or not. |
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190 * @return |
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191 */ |
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192 void ShortQuadToL( TFloatFixPt& aX2, |
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193 TFloatFixPt& aY2, |
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194 TBool aAbsolute ); |
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195 |
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196 |
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197 |
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198 /** |
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199 * Clear all path info. |
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200 * |
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201 * @since 1.0 |
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202 * @return |
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203 */ |
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204 void Reset(); |
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205 |
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206 /** |
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207 * Append the given points to this path. |
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208 * |
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209 * @since 1.0 |
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210 * @param aItr : points to append. |
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211 * @return |
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212 */ |
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213 void AppendL( CGfxPathIterator* aItr ); |
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214 |
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215 |
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216 // Implementation of MGfxShape |
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217 |
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218 /** |
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219 * Get the bounding box for this path. |
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220 * |
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221 * @since 1.0 |
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222 * @param aAt : transform to apply. |
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223 * @param aRect : bounding box info holder. |
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224 * @return |
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225 */ |
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226 void GetBounds( const TGfxAffineTransform& aAt, |
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227 TGfxRectangle2D& aRect ); |
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228 |
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229 /** |
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230 * Get the iterator for this path. |
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231 * |
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232 * @since 1.0 |
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233 * @param aAt : transform to apply. |
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234 * @param aPitr : iterator info for this path. |
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235 * @return |
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236 */ |
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237 void GetPathIteratorL( TGfxAffineTransform* aAt, |
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238 CGfxPathIterator*& aPitr ); |
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239 |
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240 /** |
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241 * Get the iterator for this path. |
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242 * |
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243 * @since 1.0 |
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244 * @param aAt : transform to apply. |
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245 * @param aLimit : maximum number of points to define path. |
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246 * @param aPitr : iterator info for this path. |
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247 * @return |
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248 */ |
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249 void GetPathIteratorL( TGfxAffineTransform* aAt, |
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250 TInt aLimit, |
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251 CGfxPathIterator*& aPitr ); |
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252 /** |
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253 * Get the area for this path. |
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254 * |
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255 * @since 1.0 |
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256 * @return area of path. |
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257 */ |
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258 TFloatFixPt AreaSize(); |
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259 |
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260 /** |
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261 * Get the pointer to the type array. |
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262 * |
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263 * @since 1.0 |
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264 * @return type info array pointer |
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265 */ |
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266 RArray<TUint32>* PointTypeArray(); |
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267 unsigned char* PathSegmentTypeArray(); |
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268 void PathSegmentTypeArray(unsigned char* aSegmentTypeArray); |
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269 TUint8 CGfxGeneralPath::Count(); |
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270 void CGfxGeneralPath::Count(TUint8 aCount); |
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271 |
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272 /** |
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273 * Get the pointer to the coordinate array. |
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274 * |
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275 * @since 1.0 |
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276 * @return coordinate array. |
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277 */ |
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278 TFloatFixPt* PointCoordsArray(); |
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279 |
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280 /** |
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281 * Get the pointer to the type array. |
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282 * |
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283 * @since 1.0 |
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284 * @return type info array pointer |
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285 */ |
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286 RArray<TFloatFixPt>* PointCoordsArrayAll(); |
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287 |
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288 /** |
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289 * Set the pointer to the type array. |
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290 * |
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291 * @since 1.0 |
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292 * @param aTypesArray : type info array pointer |
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293 * @return |
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294 */ |
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295 void SetPointTypeArrayL( RArray<TUint32>* aTypesArray ); |
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296 |
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297 // used in decoding to avoid local copying |
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298 void SetPointTypeArrayRef( RArray<TUint32>*& aTypesArray ); |
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299 |
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300 /** |
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301 * Set the pointer to the coordinate array. |
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302 * |
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303 * @since 1.0 |
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304 * @param aPointCoords : coordinate array. |
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305 * @return |
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306 */ |
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307 void SetPointCoordsArrayL( RArray<TFloatFixPt>* aPointCoords ); |
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308 |
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309 // used in decoding to avoid local copying |
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310 void SetPointCoordsArrayRef( RArray<TFloatFixPt>*& aPointCoords ); |
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311 |
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312 |
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313 /* Return shape type */ |
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314 inline virtual TInt ShapeType () { return EPath; }; |
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315 |
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316 /* gives the total number of segments in the path elementL */ |
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317 TInt GetSegmentCount(); |
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318 |
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319 /* gives the segmentType in the path elementL */ |
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320 TInt GetSegmentType(TInt aSegmentIndex ); |
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321 |
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322 /* gives the */ |
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323 TReal32 GetSegmentParameter(TInt aSegmentIndex ,TInt aParameterIndex); |
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324 void IsHorizontalLineOrVertical(TInt aSegmentIndex, TBool& aHorizontal, TBool& aVertical); |
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325 |
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326 CGfxGeneralPath* CloneL(); |
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327 void QuadToLWithNoControlPoint(TFloatFixPt aX, TFloatFixPt aY); |
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328 |
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329 protected: |
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330 |
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331 /** |
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332 * Constructor |
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333 * |
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334 * @since 1.0 |
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335 * @return |
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336 */ |
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337 CGfxGeneralPath(); |
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338 |
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339 /** |
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340 * Second phase of construction. |
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341 * |
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342 * @since 1.0 |
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343 * @return |
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344 */ |
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345 void ConstructL(); |
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346 |
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347 |
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348 /** |
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349 * Get the curve reference point for this last curve. |
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350 * |
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351 * @since 1.0 |
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352 * @param aX : storage for x coordinate of reference point. |
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353 * @param aY : storage for y coordinate of reference point. |
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354 * @return |
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355 */ |
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356 void GetCurveRefPoint( TFloatFixPt& aX, TFloatFixPt& aY ); |
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357 |
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358 protected: |
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359 RArray<TUint32>* iPointTypes; |
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360 unsigned char* iPathSegmentTypeArray; |
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361 TUint8 iCount; |
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362 RArray<TFloatFixPt>* iPointCoords; |
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363 |
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364 TFloatFixPt iLastX; |
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365 TFloatFixPt iLastY; |
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366 |
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367 private: |
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368 friend class CGfxGeneralPathIteratorP; |
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369 }; |
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370 |
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371 #endif // GFXGENERALPATH_H |