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annotate doodle/dia/tool_layer.d @ 48:1b4c9ba58673

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Stylistic overhaul.
author daveb
date Tue, 03 Aug 2010 17:37:21 +0930
parents 188397ef9a12
children b190a9d9352e
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rev   line source
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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 std.stdio;
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9 import doodle.cairo.routines;
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10 }
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12 class ToolLayer : Layer, EventHandler {
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13 this(in Tool[] tools, in string name) {
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14 super(name);
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15 _tools = tools.dup;
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16 }
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18 // Layer overrides:
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19
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20 override Rectangle bounds() const {
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21 return Rectangle();
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22 }
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23
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24 override void draw(const Viewport viewport,
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25 in Rectangle pixelDamage, scope Context pixelCr,
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26 in Rectangle modelDamage, scope Context modelCr) const {
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27 // FIXME this isn't how we will really draw the tools...
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28 foreach (const Tool tool; _tools) {
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29 tool.draw(viewport, pixelDamage, pixelCr, modelDamage, modelCr);
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30 }
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31 }
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33 // EventHandler overrides:
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35 override bool handleButtonPress(scope Viewport viewport, in ButtonEvent event) {
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36 // writefln("%s", event);
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38 if (_grabbedTool is null) {
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39 foreach_reverse(ref tool; _tools) {
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40 if (tool.handleButtonPress(viewport, event)) {
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41 _grabbedTool = &tool;
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42 _grabbedButton = event.button_name;
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43 break;
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44 }
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45 }
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46 }
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47 else {
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48 _grabbedTool.handleButtonPress(viewport, event);
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49 }
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51 return true;
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52 }
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54 override bool handleButtonRelease(scope Viewport viewport, in ButtonEvent event) {
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55 // writefln("%s", event);
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57 if (_grabbedTool !is null) {
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58 _grabbedTool.handleButtonRelease(viewport, event);
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60 if (_grabbedButton == event.button_name) {
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61 _grabbedTool = null;
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62 }
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63 }
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65 return true;
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66 }
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68 override bool handleKeyPress(scope Viewport viewport, in KeyEvent event) {
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69 // writefln("%s", event);
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71 return true;
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72 }
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74 override bool handleKeyRelease(scope Viewport viewport, in KeyEvent event) {
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75 // writefln("%s", event);
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77 return true;
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78 }
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80 override bool handleMotion(scope Viewport viewport, in MotionEvent event) {
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81 //writefln("%s", event);
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83 if (_grabbedTool is null) {
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84 foreach_reverse(ref tool; _tools) {
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85 if (tool.handleMotion(viewport, event)) {
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86 break;
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87 }
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88 }
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89 }
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90 else {
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91 _grabbedTool.handleMotion(viewport, event);
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92 }
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94 return true;
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95 }
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97 override bool handleScroll(scope Viewport viewport, in ScrollEvent event) {
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98 // writefln("%s", event);
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100 if (_grabbedTool is null) {
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101 foreach_reverse(ref tool; _tools) {
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102 if (tool.handleScroll(viewport, event)) {
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103 break;
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104 }
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105 }
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106 }
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107 else {
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108 _grabbedTool.handleScroll(viewport, event);
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109 }
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111 return true;
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112 }
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114 /*
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115 override void push(Tool tool) {
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116 }
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118 override void pop() {
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119 }
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121 override void replace(Tool tool) {
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122 }
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123 */
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124
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125 private {
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126 Tool[] _tools;
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127 Tool * _grabbedTool;
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128 ButtonName _grabbedButton;
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129 }
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130 }