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1 /* |
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2 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER. |
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3 * |
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4 * Copyright 2024 Olaf Wintermann. All rights reserved. |
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5 * |
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6 * Redistribution and use in source and binary forms, with or without |
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7 * modification, are permitted provided that the following conditions are met: |
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8 * |
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9 * 1. Redistributions of source code must retain the above copyright |
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10 * notice, this list of conditions and the following disclaimer. |
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11 * |
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12 * 2. Redistributions in binary form must reproduce the above copyright |
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13 * notice, this list of conditions and the following disclaimer in the |
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14 * documentation and/or other materials provided with the distribution. |
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15 * |
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16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
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17 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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19 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE |
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20 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
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21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
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22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
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23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
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24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
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25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
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26 * POSSIBILITY OF SUCH DAMAGE. |
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27 */ |
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28 |
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29 /* |
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30 * |
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31 */ |
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32 |
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33 #define _GNU_SOURCE |
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34 #include <stdio.h> |
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35 #include <stdlib.h> |
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36 #include <string.h> |
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37 |
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38 #include "Grid.h" |
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39 |
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40 #include <X11/Xlib.h> |
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41 |
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42 |
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43 |
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44 static XtActionsRec actionslist[] = { |
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45 {"getfocus",grid_getfocus}, |
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46 {"loosefocus",grid_loosefocus}, |
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47 {"NULL",NULL} |
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48 }; |
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49 |
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50 //static char defaultTranslations[] = "<BtnDown>: mousedown()\n"; |
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51 static char defaultTranslations[] = "\ |
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52 <EnterWindow>: getfocus()\n\ |
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53 <LeaveWindow>: loosefocus()\n"; |
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54 |
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55 |
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56 ///* |
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57 static XtResource constraints[] = |
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58 { |
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59 { |
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60 gridColumn, |
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61 gridColumn, |
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62 XmRDimension, |
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63 sizeof (Dimension), |
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64 XtOffsetOf( GridConstraintRec, |
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65 grid.x), |
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66 XmRImmediate, |
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67 (XtPointer) 0 |
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68 }, |
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69 { |
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70 gridRow, |
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71 gridRow, |
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72 XmRDimension, |
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73 sizeof (Dimension), |
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74 XtOffsetOf( GridConstraintRec, |
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75 grid.y), |
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76 XmRImmediate, |
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77 (XtPointer) 0 |
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78 }, |
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79 { |
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80 gridColspan, |
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81 gridColspan, |
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82 XmRDimension, |
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83 sizeof (Dimension), |
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84 XtOffsetOf( GridConstraintRec, |
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85 grid.colspan), |
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86 XmRImmediate, |
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87 (XtPointer) 0 |
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88 }, |
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89 { |
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90 gridRowspan, |
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91 gridRowspan, |
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92 XmRDimension, |
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93 sizeof (Dimension), |
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94 XtOffsetOf( GridConstraintRec, |
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95 grid.rowspan), |
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96 XmRImmediate, |
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97 (XtPointer) 0 |
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98 }, |
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99 { |
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100 gridMarginLeft, |
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101 gridMarginLeft, |
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102 XmRDimension, |
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103 sizeof (Dimension), |
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104 XtOffsetOf( GridConstraintRec, |
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105 grid.margin_left), |
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106 XmRImmediate, |
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107 (XtPointer) 0 |
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108 }, |
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109 { |
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110 gridMarginRight, |
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111 gridMarginRight, |
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112 XmRDimension, |
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113 sizeof (Dimension), |
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114 XtOffsetOf( GridConstraintRec, |
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115 grid.margin_right), |
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116 XmRImmediate, |
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117 (XtPointer) 0 |
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118 }, |
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119 { |
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120 gridMarginTop, |
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121 gridMarginTop, |
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122 XmRDimension, |
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123 sizeof (Dimension), |
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124 XtOffsetOf( GridConstraintRec, |
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125 grid.margin_top), |
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126 XmRImmediate, |
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127 (XtPointer) 0 |
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128 }, |
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129 { |
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130 gridMarginBottom, |
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131 gridMarginBottom, |
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132 XmRDimension, |
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133 sizeof (Dimension), |
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134 XtOffsetOf( GridConstraintRec, |
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135 grid.margin_bottom), |
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136 XmRImmediate, |
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137 (XtPointer) 0 |
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138 }, |
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139 { |
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140 gridHExpand, |
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141 gridHExpand, |
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142 XmRBoolean, |
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143 sizeof (Boolean), |
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144 XtOffsetOf( GridConstraintRec, |
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145 grid.hexpand), |
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146 XmRImmediate, |
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147 (XtPointer) 0 |
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148 }, |
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149 { |
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150 gridVExpand, |
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151 gridVExpand, |
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152 XmRBoolean, |
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153 sizeof (Boolean), |
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154 XtOffsetOf( GridConstraintRec, |
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155 grid.vexpand), |
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156 XmRImmediate, |
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157 (XtPointer) 0 |
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158 }, |
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159 { |
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160 gridHFill, |
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161 gridHFill, |
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162 XmRBoolean, |
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163 sizeof (Boolean), |
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164 XtOffsetOf( GridConstraintRec, |
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165 grid.hfill), |
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166 XmRImmediate, |
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167 (XtPointer) 0 |
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168 }, |
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169 { |
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170 gridVFill, |
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171 gridVFill, |
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172 XmRBoolean, |
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173 sizeof (Boolean), |
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174 XtOffsetOf( GridConstraintRec, |
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175 grid.vfill), |
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176 XmRImmediate, |
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177 (XtPointer) 0 |
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178 } |
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179 |
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180 }; |
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181 //*/ |
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182 //static XtResource constraints[] = {}; |
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183 |
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184 GridClassRec gridClassRec = { |
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185 // Core Class |
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186 { |
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187 //(WidgetClass)&constraintClassRec, // superclass |
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188 (WidgetClass)&xmManagerClassRec, |
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189 "Grid", // class_name |
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190 sizeof(GridRec), // widget_size |
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191 grid_class_initialize, // class_initialize |
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192 NULL, // class_part_initialize |
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193 FALSE, // class_inited |
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194 (XtInitProc)grid_initialize, // initialize |
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195 NULL, // initialize_hook |
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196 grid_realize, // realize |
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197 actionslist, // actions |
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198 XtNumber(actionslist), // num_actions |
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199 NULL, // resources |
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200 0, // num_resources |
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201 NULLQUARK, // xrm_class |
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202 True, // compress_motion |
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203 True, // compress_exposure |
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204 True, // compress_enterleave |
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205 False, // visible_interest |
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206 (XtWidgetProc)grid_destroy, // destroy |
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207 (XtWidgetProc)grid_resize, // resize |
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208 (XtExposeProc)grid_expose, // expose |
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209 grid_set_values, // set_values |
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210 NULL, // set_values_hook |
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211 XtInheritSetValuesAlmost, // set_values_almost |
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212 NULL, // get_values_hook |
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213 (XtAcceptFocusProc)grid_acceptfocus, // accept_focus |
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214 XtVersion, // version |
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215 NULL, // callback_offsets |
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216 //NULL, // tm_table |
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217 defaultTranslations, |
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218 XtInheritQueryGeometry, // query_geometry |
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219 NULL, // display_accelerator |
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220 NULL, // extension |
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221 }, |
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222 // Composite Class |
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223 { |
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224 GridGeometryManager, /* geometry_manager */ |
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225 GridChangeManaged, /* change_managed */ |
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226 XtInheritInsertChild, /* insert_child */ |
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227 XtInheritDeleteChild, /* delete_child */ |
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228 NULL, /* extension */ |
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229 }, |
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230 // Constraint Class |
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231 { |
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232 constraints, /* resources */ |
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233 XtNumber(constraints), /* num_resources */ |
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234 sizeof(GridConstraintRec), /* constraint_size */ |
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235 grid_constraint_init, /* initialize */ |
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236 NULL, /* destroy */ |
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237 ConstraintSetValues, /* set_values */ |
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238 NULL, /* extension */ |
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239 }, |
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240 // XmManager Class |
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241 ///* |
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242 { |
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243 NULL, |
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244 NULL, |
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245 0, |
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246 NULL, |
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247 0, |
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248 NULL, |
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249 NULL |
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250 }, |
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251 //*/ |
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252 // MyWidget Class |
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253 { |
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254 0 |
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255 } |
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256 }; |
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257 |
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258 WidgetClass gridClass = (WidgetClass)&gridClassRec; |
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259 |
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260 |
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261 void grid_class_initialize(Widget request, Widget new, ArgList args, Cardinal *num_args) { |
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262 |
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263 } |
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264 void grid_initialize(Widget request, Widget new, ArgList args, Cardinal num_args) { |
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265 MyWidget mn = (MyWidget)new; |
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266 |
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267 mn->mywidget.max_col = 0; |
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268 mn->mywidget.max_row = 0; |
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269 |
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270 } |
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271 void grid_realize(MyWidget w,XtValueMask *valueMask,XSetWindowAttributes *attributes) { |
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272 XtMakeResizeRequest((Widget)w, 400, 400, NULL, NULL); |
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273 (coreClassRec.core_class.realize)((Widget)w, valueMask, attributes); |
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274 grid_place_children(w); |
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275 } |
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276 |
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277 |
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278 void grid_destroy(MyWidget widget) { |
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279 |
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280 } |
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281 void grid_resize(MyWidget widget) { |
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282 grid_place_children(widget); |
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283 } |
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284 |
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285 void grid_expose(MyWidget widget, XEvent *event, Region region) { |
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286 |
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287 } |
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288 |
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289 |
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290 Boolean grid_set_values(Widget old, Widget request, Widget neww, ArgList args, Cardinal *num_args) { |
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291 return False; |
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292 } |
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293 |
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294 Boolean grid_acceptfocus(Widget w, Time *t) { |
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295 |
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296 } |
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297 |
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298 void grid_getfocus(MyWidget myw, XEvent *event, String *params, Cardinal *nparam) { |
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299 |
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300 } |
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301 |
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302 void grid_loosefocus(MyWidget myw, XEvent *event, String *params, Cardinal *nparam) { |
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303 |
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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 XtGeometryResult GridGeometryManager(Widget widget, XtWidgetGeometry *request, XtWidgetGeometry *reply) { |
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309 GridRec *grid = (GridRec*)XtParent(widget); |
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310 GridConstraintRec *constraints = widget->core.constraints; |
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311 //XtVaSetValues(widget, XmNwidth, request->width, XmNheight, request->height, NULL); |
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312 if((request->request_mode & CWWidth) == CWWidth) { |
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313 widget->core.width = request->width; |
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314 constraints->grid.pref_width = request->width; |
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315 } |
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316 if((request->request_mode & CWHeight) == CWHeight) { |
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317 widget->core.height = request->height; |
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318 constraints->grid.pref_height = request->height; |
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319 } |
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320 grid_place_children((MyWidget)XtParent(widget)); |
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321 return XtGeometryYes; |
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322 } |
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323 |
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324 void GridChangeManaged(Widget widget) { |
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325 |
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326 } |
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327 |
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328 Boolean ConstraintSetValues(Widget old, Widget request, Widget neww, ArgList args, Cardinal *num_args) { |
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329 GridConstraintRec *constraints = neww->core.constraints; |
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330 MyWidget grid = (MyWidget)XtParent(neww); |
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331 if(constraints->grid.x > grid->mywidget.max_col) { |
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332 grid->mywidget.max_col = constraints->grid.x; |
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333 } |
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334 if(constraints->grid.y > grid->mywidget.max_row) { |
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335 grid->mywidget.max_row = constraints->grid.y; |
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336 } |
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337 } |
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338 |
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339 |
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340 void grid_constraint_init( |
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341 Widget request, |
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342 Widget neww, |
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343 ArgList args, |
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344 Cardinal* num_args |
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345 ) |
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346 { |
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347 GridConstraintRec *constraints = neww->core.constraints; |
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348 |
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349 MyWidget grid = (MyWidget)XtParent(neww); |
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350 if(constraints->grid.x > grid->mywidget.max_col) { |
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351 grid->mywidget.max_col = constraints->grid.x; |
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352 } |
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353 if(constraints->grid.y > grid->mywidget.max_row) { |
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354 grid->mywidget.max_row = constraints->grid.y; |
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355 } |
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356 constraints->grid.pref_width = neww->core.width; |
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357 constraints->grid.pref_height = neww->core.height; |
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358 } |
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359 |
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360 void grid_place_children(MyWidget w) { |
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361 int ncols = w->mywidget.max_col+1; |
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362 int nrows = w->mywidget.max_row+1; |
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363 GridDef *cols = calloc(ncols, sizeof(GridDef)); |
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364 GridDef *rows = calloc(nrows, sizeof(GridDef)); |
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365 int num_cols_expanding = 0; |
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366 int num_rows_expanding = 0; |
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367 int req_width = 0; |
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368 int req_height = 0; |
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369 |
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370 // calculate the minimum size requirements for all columns and rows |
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371 // we need to run this 2 times: for widgets without colspan/rowspan first |
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372 // and then again for colspan/rowspan > 1 |
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373 int span_max = 1; |
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374 for(int r=0;r<2;r++) { |
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375 for(int i=0;i<w->composite.num_children;i++) { |
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376 Widget child = w->composite.children[i]; |
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377 GridConstraintRec *constraints = child->core.constraints; |
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378 |
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379 if(constraints->grid.colspan > span_max || constraints->grid.rowspan > span_max) { |
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380 continue; |
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381 } |
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382 |
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383 int x = constraints->grid.x; |
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384 int y = constraints->grid.y; |
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385 // make sure ncols/nrows is correct |
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386 // errors shouldn't happen, unless someone messes up the grid internals |
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387 if(x >= ncols) { |
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388 fprintf(stderr, "Error: widget x out of bounds\n"); |
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389 continue; |
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390 } |
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391 if(y >= nrows) { |
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392 fprintf(stderr, "Error: widget y out of bounds\n"); |
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393 continue; |
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394 } |
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395 GridDef *col = &cols[x]; |
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396 GridDef *row = &rows[y]; |
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397 |
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398 if(constraints->grid.hexpand) { |
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399 if(constraints->grid.colspan > 1) { |
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400 // check if any column in the span is expanding |
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401 // if not, make the last column expanding |
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402 GridDef *last_col = col; |
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403 for(int c=x;c<ncols;c++) { |
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404 last_col = &cols[c]; |
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405 if(last_col->expand) { |
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406 break; |
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407 } |
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408 } |
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409 last_col->expand = TRUE; |
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410 } else { |
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411 col->expand = TRUE; |
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412 } |
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413 } |
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414 if(constraints->grid.vexpand) { |
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415 if(constraints->grid.rowspan > 1) { |
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416 GridDef *last_row = row; |
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417 for(int c=x;c<nrows;c++) { |
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418 last_row = &rows[c]; |
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419 if(last_row->expand) { |
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420 break; |
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421 } |
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422 } |
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423 last_row->expand = TRUE; |
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424 } else { |
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425 row->expand = TRUE; |
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426 } |
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427 } |
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428 |
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429 // column size |
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430 if(constraints->grid.colspan > 1) { |
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431 // check size of all columns in span |
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432 Dimension span_width = col->size; |
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433 GridDef *last_col = col; |
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434 for(int s=x+1;s<ncols;s++) { |
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435 last_col = &cols[s]; |
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436 span_width = last_col->size; |
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437 |
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438 } |
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439 int diff = constraints->grid.pref_width - span_width; |
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440 if(diff > 0) { |
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441 last_col->size += diff; |
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442 } |
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443 } else if(constraints->grid.pref_width > col->size) { |
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444 col->size = constraints->grid.pref_width; |
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445 } |
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446 // row size |
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447 if(constraints->grid.rowspan > 1) { |
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448 Dimension span_height = row->size; |
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449 GridDef *last_row = row; |
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450 for(int s=x+1;s<nrows;s++) { |
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451 last_row = &rows[s]; |
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452 span_height = last_row->size; |
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453 |
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454 } |
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455 int diff = constraints->grid.pref_height - span_height; |
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456 if(diff > 0) { |
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457 last_row->size += diff; |
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458 } |
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459 } else if(constraints->grid.pref_height > row->size) { |
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460 row->size = constraints->grid.pref_height; |
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461 } |
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462 } |
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463 span_max = 50000; // not sure if this is unreasonable low or high |
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464 } |
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465 |
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466 |
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467 for(int i=0;i<ncols;i++) { |
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468 if(cols[i].expand) { |
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469 num_cols_expanding++; |
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470 } |
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471 req_width += cols[i].size; |
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472 } |
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473 for(int i=0;i<nrows;i++) { |
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474 if(rows[i].expand) { |
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475 num_rows_expanding++; |
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476 } |
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477 req_height += rows[i].size; |
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478 } |
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479 |
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480 if(req_width > 0 && req_height > 0) { |
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481 Widget parent = w->core.parent; |
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482 Dimension rwidth = req_width; |
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483 Dimension rheight = req_height; |
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484 if(rwidth < w->core.width) { |
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485 //rwidth = w->core.width; |
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486 } |
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487 if(rheight < w->core.height) { |
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488 //rheight = w->core.height; |
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489 } |
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490 |
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491 if(!w->mywidget.sizerequest) { |
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492 Dimension actual_width, actual_height; |
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493 w->mywidget.sizerequest = TRUE; |
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494 XtMakeResizeRequest((Widget)w, req_width, req_height, &actual_width, &actual_height); |
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495 w->mywidget.sizerequest = FALSE; |
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496 //printf("size request: %d %d\n", (int)actual_width, (int)actual_height); |
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497 } |
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498 |
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499 |
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500 |
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501 } |
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502 |
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503 int hexpand = 0; |
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504 int width_diff = (int)w->core.width - req_width; |
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505 int hexpand2 = 0; |
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506 if(width_diff > 0 && num_cols_expanding > 0) { |
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507 hexpand = width_diff / num_cols_expanding; |
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508 hexpand2 = width_diff-hexpand*num_cols_expanding; |
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509 } |
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510 int x = 0; |
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511 for(int i=0;i<ncols;i++) { |
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512 cols[i].pos = x; |
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513 if(cols[i].expand) { |
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514 cols[i].size += hexpand + hexpand2; |
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515 } |
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516 x += cols[i].size; |
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517 |
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518 hexpand2 = 0; |
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519 } |
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520 |
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521 int vexpand = 0; |
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522 int height_diff = (int)w->core.height - req_height; |
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523 int vexpand2 = 0; |
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524 if(height_diff > 0 && num_rows_expanding > 0) { |
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525 vexpand = height_diff / num_rows_expanding; |
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526 vexpand2 = height_diff-vexpand*num_rows_expanding; |
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527 } |
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528 int y = 0; |
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529 for(int i=0;i<nrows;i++) { |
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530 rows[i].pos = y; |
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531 if(rows[i].expand) { |
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532 rows[i].size += vexpand + vexpand2; |
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533 } |
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534 y += rows[i].size; |
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535 |
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536 vexpand2 = 0; |
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537 } |
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538 |
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539 for(int i=0;i<w->composite.num_children;i++) { |
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540 Widget child = w->composite.children[i]; |
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541 GridConstraintRec *constraints = child->core.constraints; |
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542 GridDef c = cols[constraints->grid.x]; |
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543 GridDef r = rows[constraints->grid.y]; |
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544 int x = c.pos; |
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545 int y = r.pos; |
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546 int width = constraints->grid.pref_width; |
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547 int height = constraints->grid.pref_height; |
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548 if(constraints->grid.hfill) { |
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549 if(constraints->grid.colspan > 1) { |
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550 Dimension cwidth = 0; |
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551 for(int j=0;j<constraints->grid.colspan;j++) { |
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552 if(constraints->grid.x+j < ncols) { |
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553 cwidth += cols[constraints->grid.x+j].size; |
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554 } |
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555 } |
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556 width = cwidth; |
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557 } else { |
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558 width = c.size; |
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559 } |
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560 } |
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561 if(constraints->grid.vfill) { |
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562 if(constraints->grid.rowspan > 1) { |
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563 Dimension cheight = 0; |
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564 for(int j=0;j<constraints->grid.rowspan;j++) { |
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565 if(constraints->grid.y+j < nrows) { |
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566 cheight += rows[constraints->grid.y+j].size; |
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567 } |
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568 } |
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569 height = cheight; |
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570 } else { |
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571 height = r.size; |
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572 } |
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573 } |
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574 |
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575 XtConfigureWidget(child, x, y, width, height, child->core.border_width); |
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576 //printf("child %d %d - %d %d\n", (int)child->core.x, (int)child->core.y, (int)child->core.width, (int)child->core.height); |
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577 } |
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578 |
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579 free(cols); |
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580 free(rows); |
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581 } |
|
582 |