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annotate mde/gui/widget/createWidget.d @ 75:25cb7420dc91

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A massive overhaul/rewrite for the gui's data management and setup code. Currently much that was working is broken. imde's classes are created in a static this instead of mde's main. gl setup code moved from gl/basic.d to gl/draw.d mergetag.DefaultData: now HIGH_LOW priority instead of LOW_HIGH. Reduced type list to only used types; small fix for indent function. setup.paths: new NoFileException thrown instead of MTFileIOException
author Diggory Hardy <diggory.hardy@gmail.com>
date Mon, 28 Jul 2008 18:17:48 +0100
parents 159775502bb4
children 3dfd934100f7
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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 /// GUI Widget module.
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17 module mde.gui.widget.createWidget;
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18
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19 import mde.gui.widget.Ifaces;
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20 import mde.gui.exception : WidgetDataException;
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21
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22 // Widgets to create:
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23 //import mde.gui.widget.layout;
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24 import mde.gui.widget.miscWidgets;
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25 //import mde.gui.widget.TextWidget;
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27 /** Create a widget of type data[0] (see enum WIDGET_TYPES) under manager mgr, with initialisation
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28 * data [1..$]. */
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29 IChildWidget createWidget (IWidgetManager mgr, WidgetData data)
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30 in {
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31 assert (mgr !is null, "createWidget: mgr is null");
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32 } body {
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33 if (data.ints.length < 1) throw new WidgetDataException ("No widget data");
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34 int type = data.ints[0]; // type is first element of data
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36 mixin (binarySearch ("type", WIDGETS)); // creates widget by type as new *Widget (mgr, data);
37
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37 throw new WidgetDataException ("Bad widget type");
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38 }
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39
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40 /+ for converting to a char[] name (unused)
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41 static this() {
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42 WIDGET_NAMES = [
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43 FixedBlank : "FixedBlank",
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44 SizableBlank : "SizableBlank",
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45 Button : "Button",
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46 GridLayout : "GridLayout"
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47 ];
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48 }+/
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49
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50 private:
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51 /// Widget types.
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52 enum WIDGET_TYPE : int {
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53 WSIZABLE = 0x1000, // horizontally resizable
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54 HSIZABLE = 0x2000, // vertically resizable
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55 INTERACTIBLE = 0x4000, // any specific interaction
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56 LAYOUT = 0x8000, // is a layout widget (i.e. has sub-widgets)?
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57
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58 // Use widget names rather than usual capitals convention
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59
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60 // blank: 0x1
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61 FixedBlank = 0x1,
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62 SizableBlank = WSIZABLE | HSIZABLE | 0x1,
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63
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64 // buttons: 0x10
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65 Button = INTERACTIBLE | 0x10,
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66
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67 // content: 0x20
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68 Text = 0x21,
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69 Int = 0x22,
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71 GridLayout = LAYOUT | WSIZABLE | HSIZABLE | 0x4,
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72 TrialContentLayout = LAYOUT | WSIZABLE | HSIZABLE | 0x5
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73 }
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74
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75 //const char[][int] WIDGET_NAMES;
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76
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77 // Only used for binarySearch algorithm generation; must be ordered by numerical values.
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78 const char[][] WIDGETS = [
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79 "FixedBlank",
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80 //"Text",
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81 //"Int",
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82 "SizableBlank",
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83 "Button",
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84 //"GridLayout",
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85 /+"TrialContentLayout"+/];
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86
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87 /* Generates a binary search algorithm. */
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88 char[] binarySearch (char[] var, char[][] consts) {
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89 if (consts.length > 3) {
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90 return "if (" ~ var ~ " <= WIDGET_TYPE." ~ consts[$/2 - 1] ~ ") {\n" ~
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91 binarySearch (var, consts[0 .. $/2]) ~
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92 "} else {\n" ~
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93 binarySearch (var, consts[$/2 .. $]) ~
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94 "}\n";
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95 } else {
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96 char[] ret;
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97 foreach (c; consts) {
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98 ret ~= "if (" ~ var ~ " == WIDGET_TYPE." ~ c ~ ") {\n" ~
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99 "return new " ~ c ~ "Widget (mgr, data);\n" ~
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100 "} else ";
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101 }
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102 ret = ret[0..$-6] ~ '\n'; // remove last else
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103 return ret;
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104 }
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105 }