Mercurial > projects > mde
annotate mde/gui/widget/Window.d @ 70:7fc0a8295c83
Moved my parseTo and parseFrom modules from tango.scrapple to mde in order to reduce dependencies.
author | Diggory Hardy <diggory.hardy@gmail.com> |
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date | Fri, 04 Jul 2008 19:04:16 +0100 |
parents | f54ae4fc2b2f |
children | cee261eba249 |
rev | line source |
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1 /* LICENSE BLOCK |
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2 Part of mde: a Modular D game-oriented Engine |
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3 Copyright © 2007-2008 Diggory Hardy |
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4 |
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5 This program is free software: you can redistribute it and/or modify it under the terms |
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6 of the GNU General Public License as published by the Free Software Foundation, either |
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7 version 2 of the License, or (at your option) any later version. |
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8 |
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9 This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; |
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10 without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. |
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11 See the GNU General Public License for more details. |
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12 |
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13 You should have received a copy of the GNU General Public License |
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14 along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
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15 |
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16 /** The Window class. Hopefully eventually this will become a widget to make things a bit more |
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17 * generic. */ |
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18 module mde.gui.widget.Window; |
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19 |
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20 import mde.gui.widget.Ifaces; |
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21 import mde.gui.widget.createWidget; |
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22 |
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23 import mde.gui.IGui; |
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24 import mde.gui.exception; |
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25 import mde.gui.renderer.createRenderer; |
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26 |
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27 import mt = mde.mergetag.DataSet; |
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28 import mde.mergetag.parse.parseTo : parseTo; |
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29 import mde.mergetag.parse.parseFrom : parseFrom; |
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30 |
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31 import tango.util.log.Log : Log, Logger; |
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32 |
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33 private Logger logger; |
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34 static this () { |
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35 logger = Log.getLogger ("mde.gui.widget.Window"); |
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36 } |
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37 |
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38 /** GUI Window class |
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39 * |
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40 * A window class instance does two things: (1) specify a region of the screen upon which the window |
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41 * and its associated widgets are drawn, and (2) load, save, and generally manage all its widgets. |
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42 * |
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43 * Let the window load a table of widget data, of type int[][widgetID]. Each widget will, when |
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44 * created, be given its int[] of data, which this() must confirm is valid (or throw). |
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45 */ |
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46 class Window : mt.IDataSection, IWindow |
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47 { |
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48 //BEGIN Methods for GUI |
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49 this (char[] id) { |
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50 name = id; |
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51 } |
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52 |
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53 /** Call after loading is finished to setup the window and confirm that it's valid. |
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54 * |
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55 * Throws: WindowLoadException (or possibly other exceptions). Do not use the instance if an |
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56 * exception occurs! */ |
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57 void finalise (IGui gui) |
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58 in { |
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59 assert (gui !is null, "Window.finalise ("~name~"): gui is null"); |
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60 } body { |
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61 // Check data was loaded: |
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62 if (widgetData is null) |
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63 throw new WindowLoadException ("No widget creation data"); |
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64 |
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65 // Save gui and create the renderer: |
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66 gui_ = gui; |
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67 rend = createRenderer (gui.rendererName); |
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68 |
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69 // Create the primary widget (and indirectly all sub-widgets), throwing on error: |
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70 // Note: GridLayoutWidget's this relies on rend.layoutSpacing. |
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71 widget = makeWidget (0); // primary widget always has ID 0. |
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72 // This data is no longer needed by Window, although its sub-arrays may still be used, so |
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73 // let the GC collect what it can: |
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74 widgetData = null; |
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75 widgetStrings = null; |
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76 |
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77 // get border sizes: |
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78 border = rend.setSizable (isWSizable, isHSizable); // depends on widget |
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79 |
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80 // Note: this should return an empty array, but we shouldn't make a fuss if it's not empty: |
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81 if ((widget.adjust (mutableData)).length != 0) // adjust/set size, etc., depends on rend |
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82 logger.warn ("Local widget position data is invalid!"); |
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83 mutableData = null; // no longer needed |
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84 |
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85 widget.getCurrentSize (w,h); // and get this size |
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86 w += border.l + border.r; // Adjust for border |
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87 h += border.t + border.b; |
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88 |
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89 widgetX = x + border.l; // widget position |
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90 widgetY = y + border.t; // must be updated if the window is moved |
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91 widget.setPosition (widgetX, widgetY); |
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92 |
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93 // Calculate mw/mh and xw/yh (cached data): |
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94 mw = widget.minWidth + border.l + border.r; |
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95 mh = widget.minHeight + border.t + border.b; |
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96 |
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97 xw = x+w; |
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98 yh = y+h; |
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99 } |
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100 //BEGIN Mergetag code |
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101 void addTag (char[] tp, mt.ID id, char[] dt) { |
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102 // Priority is HIGH_LOW, so don't overwrite data which has already been loaded. |
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103 if (tp == INTAINT) { |
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104 if (id == WDGD && widgetData == null) { |
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105 widgetData = cast(int[][widgetID]) parseTo!(int[][int]) (dt); |
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106 } |
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107 } else if (tp == CHARAINT) { |
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108 if (id == WS && widgetStrings == null) { |
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109 widgetStrings = parseTo!(char[][int]) (dt); |
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110 } |
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111 } else if (tp == INTA) { |
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112 if (id == MD && mutableData == null) { |
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113 mutableData = parseTo!(int[]) (dt); |
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114 } |
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115 } else if (tp == INT) { |
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116 if (id == X && x == -1) { |
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117 x = cast(wdim) parseTo!(int) (dt); |
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118 } else if (id == Y && y == -1) { |
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119 y = cast(wdim) parseTo!(int) (dt); |
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120 } |
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121 } |
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122 } |
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123 void writeAll (ItemDelg dlg) |
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124 in { |
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125 assert (widgetData is null, "Window.writeAll: widgetData !is null"); |
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126 } body { |
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127 /+ NOTE: currently editing is impossible... |
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128 if (edited) { // only save the widget creation data if it's been adjusted: |
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129 addCreationData (widget); // generate widget save data |
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130 dlg (INTAINT, WDGD, parseFrom!(int[][int]) (widgetData)); |
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131 dlg (CHARAINT, WS, parseFrom!(char[][int]) (widgetStrings)); |
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132 }+/ |
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133 // Save mutable data: |
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134 dlg (INTA, MD, parseFrom!(int[]) (widget.getMutableData)); |
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135 // Save the window position: |
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136 dlg (INT, X, parseFrom!(int) (x)); |
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137 dlg (INT, Y, parseFrom!(int) (y)); |
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138 } |
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139 private static const { |
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140 auto CHARAINT = "char[][int]"; |
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141 auto INTAINT = "int[][int]"; |
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142 auto INTA = "int[]"; |
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143 auto INT = "int"; |
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144 auto WDGD = "widgetData"; |
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145 auto MD = "mutableData"; |
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146 auto WS = "widgetStrings"; |
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147 auto X = "x"; |
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148 auto Y = "y"; |
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149 } |
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150 //END Mergetag code |
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151 //END Methods for GUI |
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152 |
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153 //BEGIN IWindow methods |
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154 /** Get/create a widget by ID. |
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155 * |
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156 * Should $(I only) be called internally and by sub-widgets! */ |
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157 IWidget makeWidget (widgetID i) |
32
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158 in { |
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159 // widgetData is normally left to be garbage collected after widgets have been created: |
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160 assert (widgetData !is null, "Window.makeWidget ("~name~"): widgetData is null"); |
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161 } body { |
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162 /* Each widget returned should be a unique object; if multiple widgets are requested with |
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163 * the same ID, a new widget is created each time. */ |
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164 |
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165 int[]* d = i in widgetData; |
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166 if (d is null) |
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167 throw new WindowLoadException ("Window.makeWidget ("~name~"): Widget not found"); |
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168 |
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169 // Throws WidgetDataException (a WindowLoadException) if bad data: |
39
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170 return createWidget (this, *d); |
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171 } |
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172 |
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173 char[] getWidgetString (int i) |
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174 in { |
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175 // widgetStrings is freed at same time as widgetData |
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176 // but widgetData is guaranteed to be read |
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177 assert (widgetData !is null, "getWidgetString called after widget creation finished"); |
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178 } body { |
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179 char[]* p; |
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180 if (widgetStrings is null || |
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181 (p = i in widgetStrings) is null ) |
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182 throw new WindowLoadException ("Needed widgetStrings not set for Window"); |
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183 |
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184 return *p; |
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185 } |
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186 |
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187 /** Add this widget's data to that to be saved, returning it's widgetID. */ |
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188 widgetID addCreationData (IWidget widget) |
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189 { |
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190 widgetID i; |
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191 if (widgetData is null) |
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192 i = 0; |
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193 else |
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194 i = widgetData.keys[$-1] + 1; |
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195 |
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196 /+ Doesn't this have no effect except when getCreationData throws, in which case the data |
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197 + isn't used anyway? I'm sure it was added for a reason... FIXME and below |
39
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198 widgetData[i] = null; // Make sure the same ID doesn't get used by a recursive call |
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199 +/ |
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200 widgetData[i] = widget.getCreationData; |
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201 |
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202 return i; |
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203 } |
41
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204 |
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205 int addWidgetString (char[] str) |
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206 { |
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207 int i; |
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208 if (widgetStrings is null) |
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209 i = 0; |
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210 else |
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211 i = widgetStrings.keys[$-1] + 1; |
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212 |
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213 /+ See above. FIXME |
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214 widgetStrings[i] = null; // Make sure the same ID doesn't get used by a recursive call |
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215 +/ |
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216 widgetStrings[i] = str; |
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217 |
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218 return i; |
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219 } |
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220 |
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221 IGui gui () { |
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222 return gui_; |
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223 } |
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224 |
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225 void requestRedraw () { |
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226 gui_.requestRedraw; |
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227 } |
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228 |
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229 IRenderer renderer () |
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230 in { |
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231 assert (rend !is null, "Window.renderer: rend is null"); |
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232 } body { |
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233 return rend; |
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234 } |
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235 //END IWindow methods |
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236 |
34
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237 //BEGIN IWidget methods |
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238 //FIXME: how many of these methods are actually needed/used? |
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239 int[] adjust (int[]) { // simply not relevant (never used) |
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240 return []; |
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241 } |
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242 int[] getCreationData () { // simply not relevant (never used) |
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243 return []; |
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244 } |
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245 int[] getMutableData () { // simply not relevant (never used) |
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246 return []; |
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247 } |
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248 |
37
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249 bool isWSizable () { |
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250 return widget.isWSizable; |
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251 } |
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252 bool isHSizable () { |
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253 return widget.isHSizable; |
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254 } |
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255 |
66
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256 wdim minWidth () { |
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257 return mw; |
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258 } |
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259 wdim minHeight () { |
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260 return mh; |
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261 } |
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262 void getCurrentSize (out wdim cw, out wdim ch) { |
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263 cw = w; |
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264 ch = h; |
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265 } |
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266 |
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267 void setWidth (wdim nw, int dir) { |
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268 if (nw < mw) w = mw; // clamp |
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269 else w = nw; |
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270 xw = x + w; |
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271 widget.setWidth (w - border.l - border.r, dir); |
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272 } |
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273 void setHeight (wdim nh, int dir) { |
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274 if (nh < mh) h = mh; // clamp |
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275 else h = nh; |
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276 yh = y + h; |
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277 widget.setHeight (h - border.t - border.b, dir); |
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278 } |
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279 |
58
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280 void setPosition (wdim nx, wdim ny) { |
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281 x = nx; |
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282 y = ny; |
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283 |
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284 xw = x+w; |
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285 yh = y+h; |
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286 |
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287 widgetX = x + border.l; |
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288 widgetY = y + border.t; |
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289 |
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290 widget.setPosition (widgetX, widgetY); |
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291 |
46
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292 gui_.requestRedraw (); // necessary whenever the window is moved; setPosition is called after resizes and moves |
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293 } |
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294 |
58
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295 IWidget getWidget (wdim cx, wdim cy) { |
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296 if (cx < x || cx >= xw || cy < y || cy >= yh) // not over window |
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297 return null; |
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298 if (cx >= widgetX && cx < xw-border.r && cy >= widgetY && cy < yh-border.b) |
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299 // over the widget |
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300 return widget.getWidget (cx, cy); |
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301 else // over the window border |
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302 return this; |
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303 } |
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304 void clickEvent (wdabs cx, wdabs cy, ubyte b, bool state) { |
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305 if (b == 1 && state == true) { |
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306 resizeType = rend.getResizeType (cx-x, cy-y, w,h); |
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307 |
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308 if (resizeType != RESIZE_TYPE.NONE) { // Some type of resize |
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309 // Set x/yDrag (unfortunately these need to be different for each edge) |
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310 if (resizeType & RESIZE_TYPE.L) |
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311 xDrag = w + cx; |
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312 else if (resizeType & RESIZE_TYPE.R) |
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313 xDrag = w - cx; |
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314 |
41
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315 if (resizeType & RESIZE_TYPE.T) |
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316 yDrag = h + cy; |
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317 else if (resizeType & RESIZE_TYPE.B) |
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318 yDrag = h - cy; |
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319 |
41
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320 // Add the callbacks (they use resizeType which has already been set) |
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321 gui_.addClickCallback (&endCallback); |
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322 gui_.addMotionCallback (&resizeCallback); |
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323 } else { // window is being moved |
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324 xDrag = cx - x; |
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325 yDrag = cy - y; |
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326 |
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327 gui_.addClickCallback (&endCallback); |
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328 gui_.addMotionCallback (&moveCallback); |
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329 } |
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330 } |
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331 } |
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332 |
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333 void draw () { |
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334 // background |
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335 rend.drawWindow (x,y, w,h); |
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336 |
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337 // Tell the widget to draw itself: |
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338 widget.draw(); |
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339 } |
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340 //END IWidget methods |
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341 |
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342 private: |
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343 alias IRenderer.BorderDimensions BorderDimensions; |
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344 alias IRenderer.RESIZE_TYPE RESIZE_TYPE; |
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345 |
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346 //BEGIN Window moving and resizing |
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347 void moveCallback (wdabs cx, wdabs cy) { |
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348 setPosition (cx-xDrag, cy-yDrag); |
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349 } |
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350 void resizeCallback (wdabs cx, wdabs cy) { |
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351 debug scope(failure) |
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352 logger.trace ("resizeCallback: failure"); |
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353 |
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354 // This function is only called if some resize is going to happen. |
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355 // x,y are used as parameters to setPosition as well as being affected by it; somewhat |
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356 // pointless but fairly effective. |
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357 |
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358 if (resizeType & RESIZE_TYPE.L) { |
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359 wdim xSize = xDrag - cx; |
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360 if (xSize < mw) xSize = mw; // clamp |
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361 x += w - xSize; |
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362 setWidth (xSize, 1); |
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363 } |
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364 else if (resizeType & RESIZE_TYPE.R) { |
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365 setWidth (xDrag + cx, -1); |
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366 } |
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367 if (resizeType & RESIZE_TYPE.T) { |
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368 wdim ySize = yDrag - cy; |
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369 if (ySize < mh) ySize = mh; |
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370 y += h - ySize; |
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371 setHeight (ySize, 1); |
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372 } |
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373 else if (resizeType & RESIZE_TYPE.B) { |
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374 setHeight (yDrag + cy, -1); |
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375 } |
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376 |
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377 // Moves lower (x,y) coordinate if necessary and repositions any sub-widgets moved by the |
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378 // resizing: |
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379 setPosition (x, y); |
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380 } |
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381 bool endCallback (wdabs cx, wdabs cy, ubyte b, bool state) { |
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382 if (b == 1 && state == false) { |
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383 // The mouse shouldn't have moved since the motion callback |
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384 // was last called, so there's nothing else to do now. |
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385 gui_.removeCallbacks (cast(void*) this); |
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386 |
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387 return true; // we've handled the up-click |
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388 } |
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389 return false; // we haven't handled it |
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390 } |
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391 wdim xDrag, yDrag; // where a drag starts relative to x and y |
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392 IRenderer.RESIZE_TYPE resizeType; // Type of current resize |
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393 //END Window moving and resizing |
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394 |
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395 // Load/save data: |
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396 public char[] name; // The window's name (id from config file) |
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397 //bool edited = false; // True if any widgets have been edited (excluding scaling) |
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398 |
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399 // Data used for saving and loading (null in between): |
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400 int[][widgetID] widgetData = null;// Data for all widgets under this window |
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401 int[] mutableData = null; // Widget's mutable data (adjusted sizes, etc.) |
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402 char[][int] widgetStrings = null;// Strings by ID; string-typed creation data |
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403 |
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404 IGui gui_; // The gui managing this window |
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405 IRenderer rend; // The window's renderer |
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406 |
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407 IWidget widget; // The primary widget in this window. |
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408 |
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409 wdim x = -1, y = -1; // Window position |
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410 wdsize w,h; // Window size (calculated from Widgets) |
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411 wdim xw, yh; // x+w, y+h (frequent use by clickEvent) |
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412 wdim widgetX, widgetY; // Widget position (= window position plus BORDER_WIDTH) |
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413 wdim mw = -1, mh = -1; // minimal size (negative means requires calculation) |
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414 |
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415 BorderDimensions border; // Total border size (move plus resize) |
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416 } |