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annotate doodle/dia/tool_layer.d @ 81:d92b9f04b1e8

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Bed time
author "David Bryant <bagnose@gmail.com>"
date Mon, 16 Aug 2010 00:04:27 +0930
parents b759414d2b72
children cdd4fc728d94
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1754cb773d41 Part-way through getting to compile with configure/builder.
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1 module doodle.dia.tool_layer;
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3 public {
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4 import doodle.dia.tool;
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5 }
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7 private {
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8 import doodle.core.logging;
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9 }
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10
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11 // This interface is used by the palette
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12 interface IToolStack {
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13 void use(Tool tool);
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14 }
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16 interface IToolStackObserver {
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17 void toolChanged(Tool tool);
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18 }
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20 final class ToolLayer : Layer, IEventHandler, IToolStack {
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21 this(in Tool[] staticTools, IToolStackObserver observer, in string name = "Tool") {
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22 super(name);
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23 _staticTools = staticTools.dup;
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24 _observer = observer;
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25 }
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26
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27 // IToolStack overrides:
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29 void use(Tool tool) {
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30 assert(_grabbedTool is null);
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31 message("using new tool: %s", tool.name);
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32 _staticTools ~= tool;
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33 _observer.toolChanged(tool);
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34 }
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36 // Layer overrides:
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37
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38 override Rectangle bounds() const {
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39 return Rectangle();
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40 }
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42 override void draw(in Rectangle screenDamage, scope Drawable screenDrawable,
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43 in Rectangle modelDamage, scope Drawable modelDrawable) const {
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44 if (_grabbedTool) {
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45 _grabbedTool.draw(screenDamage, screenDrawable);
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46 }
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47 }
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48
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49 // EventHandler overrides:
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51 bool handleButtonPress(scope IViewport viewport, in ButtonEvent event) {
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52 // writefln("%s", event);
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54 if (_grabbedTool is null) {
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55 foreach_reverse(ref tool; _staticTools) {
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56 if (tool.handleButtonPress(viewport, event)) {
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57 _grabbedTool = tool;
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58 _grabbedButton = event.buttonName;
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59 break;
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60 }
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61 }
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62 }
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63 else {
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64 _grabbedTool.handleButtonPress(viewport, event);
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65 }
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67 return true;
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68 }
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70 bool handleButtonRelease(scope IViewport viewport, in ButtonEvent event) {
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71 // writefln("%s", event);
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72
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73 if (_grabbedTool !is null) {
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74 _grabbedTool.handleButtonRelease(viewport, event);
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76 if (_grabbedButton == event.buttonName) {
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77 _grabbedTool = null;
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78 }
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79 }
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81 return true;
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82 }
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84 bool handleMotion(scope IViewport viewport, in MotionEvent event) {
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85 //writefln("%s", event);
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87 if (_grabbedTool is null) {
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88 foreach_reverse(ref tool; _staticTools) {
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89 if (tool.handleMotion(viewport, event)) {
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90 break;
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91 }
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92 }
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93 }
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94 else {
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95 _grabbedTool.handleMotion(viewport, event);
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96 }
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97
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98 return true;
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99 }
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101 bool handleScroll(scope IViewport viewport, in ScrollEvent event) {
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102 // writefln("%s", event);
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103
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104 if (_grabbedTool is null) {
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105 foreach_reverse(ref tool; _staticTools) {
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106 if (tool.handleScroll(viewport, event)) {
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107 break;
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108 }
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109 }
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110 }
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111 else {
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112 _grabbedTool.handleScroll(viewport, event);
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113 }
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115 return true;
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116 }
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117
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118 bool handleEnter(scope IViewport viewport, CrossingEvent event) {
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119 trace("Enter %s", event);
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120
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121 if (_grabbedTool is null) {
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122 foreach_reverse(ref tool; _staticTools) {
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123 if (tool.handleEnter(viewport, event)) {
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124 break;
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125 }
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126 }
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127 }
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128 else {
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129 _grabbedTool.handleEnter(viewport, event);
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130 }
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131
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132 return true;
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133 }
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134
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135 bool handleLeave(scope IViewport viewport, CrossingEvent event) {
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136 trace("Leave %s", event);
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137
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138 if (_grabbedTool is null) {
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139 foreach_reverse(ref tool; _staticTools) {
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140 if (tool.handleLeave(viewport, event)) {
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141 break;
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142 }
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143 }
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144 }
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145 else {
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146 _grabbedTool.handleLeave(viewport, event);
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147 }
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148
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149 return true;
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150 }
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151
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152 bool handleKeyPress(scope IViewport viewport, in KeyEvent event) {
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153 // writefln("%s", event);
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154
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155 // FIXME not sure how these should work
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156 foreach_reverse(ref tool; _staticTools) {
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157 if (tool.handleKeyPress(viewport, event)) {
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158 break;
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159 }
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160 }
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161
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162 return true;
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163 }
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164
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165 bool handleKeyRelease(scope IViewport viewport, in KeyEvent event) {
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166 // writefln("%s", event);
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167
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168 // FIXME not sure how these should work
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169 foreach_reverse(ref tool; _staticTools) {
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170 if (tool.handleKeyRelease(viewport, event)) {
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171 break;
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172 }
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173 }
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174
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175 return true;
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176 }
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177
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178 private {
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179 Tool[] _staticTools;
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c63719604adb Beginnings of creating a rectangle...
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180 IToolStackObserver _observer;
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181
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182 Tool _grabbedTool;
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183 ButtonName _grabbedButton;
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184 }
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185 }