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1 // Written in the D programming language
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2 // www.digitalmars.com/d/
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3
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4 /*
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5 * The contents of this file are subject to the Mozilla Public License Version
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6 * 1.1 (the "License"); you may not use this file except in compliance with
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7 * the License. You may obtain a copy of the License at
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8 * http://www.mozilla.org/MPL/
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9 *
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10 * Software distributed under the License is distributed on an "AS IS" basis,
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11 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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12 * for the specific language governing rights and limitations under the
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13 * License.
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14 *
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15 * The Original Code is the Dynamin library.
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16 *
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17 * The Initial Developer of the Original Code is Jordan Miner.
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18 * Portions created by the Initial Developer are Copyright (C) 2006-2009
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19 * the Initial Developer. All Rights Reserved.
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20 *
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21 * Contributor(s):
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22 * Jordan Miner <jminer7@gmail.com>
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23 *
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24 */
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25
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26 module dynamin.gui.window;
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27
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28 import dynamin.c.cairo;
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29 import dynamin.all_core;
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30 import dynamin.all_painting;
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31 import dynamin.all_gui;
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32 import dynamin.gui.control;
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33 import dynamin.gui.backend;
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34 import dynamin.gui.container;
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35 import dynamin.gui.events;
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36 import tango.io.Stdout;
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37 import tango.core.Exception;
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38 import tango.core.Thread;
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39
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40 static class Application {
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41 static:
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42 mixin ApplicationBackend;
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43 package Thread eventThread;
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44 void run(Window w = null) {
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45 Window.hasProcessedEvents = true;
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46
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47 auto thread = Thread.getThis();
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48 assert(eventThread is null || eventThread is thread,
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49 "Application.run called from two different threads");
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50 eventThread = thread;
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51
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52 backend_run(w);
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53 }
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54 //void invoke(void delegate() dg) {
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55 //
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56 //}
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57 //void invokeNow(void delegate() dg)
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58 }
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59
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60 enum DialogResult {
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61 ///
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62 OK,
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63 ///
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64 Yes,
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65 ///
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66 No,
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67 ///
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68 Cancel,
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69 ///
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70 Custom
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71 }
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72
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73 ///
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74 enum Position {
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75 /// Specifies being at the top-left corner.
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76 TopLeft,
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77 /// Specifies being centered between the top-left corner and the top-right corner.
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78 Top,
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79 /// Specifies being at the top-right corner.
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80 TopRight,
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81 /// Specifies being centered between the top-left corner and the bottom-left corner.
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82 Left,
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83 /// Specifies being centered between all corners.
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84 Center,
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85 /// Specifies being centered between the top-right corner and the bottom-right corner.
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86 Right,
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87 /// Specifies being at the bottom-left corner.
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88 BottomLeft,
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89 /// Specifies being centered between the bottom-left corner and the bottom-right corner.
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90 Bottom,
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91 /// Specifies being at the bottom-right corner.
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92 BottomRight
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93 }
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94
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95 /**
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96 * The different types of borders that a window may have.
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97 * These do not affect whether the window is resizable--
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98 * use Window.Resizable for that.
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99 */
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100 enum WindowBorderStyle {
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101 /** Specifies that the window has no border around the content area. */
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102 None,
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103 /**
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104 * Specifies that the window has a normal border with a title bar, icon,
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105 * and minimize button.
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106 */
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107 Normal,
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108 /** Specifies that the window has a normal border without a minimize button. */
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109 Dialog,
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110 /** Specifies that the window has the border of a floating tool box. */
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111 Tool
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112 }
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113
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114 alias List!(Control) ControlList;
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115 //Frames and Dialogs are identical except that Dialogs do not have minimize and
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116 //maximize buttons, are not shown on the taskbar, and can be modal.
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117 /**
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118 * A window is a top level control that has no parent. Its location is relative
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119 * to the top-left corner of the screen.
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120 * A window can have no border, the border of a normal window, or the border
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121 * of a tool window.
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122 *
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123 * The appearance of a window with Windows Classic:
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124 *
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125 * $(IMAGE ../web/example_window.png)
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126 */
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127 class Window : Container {
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128 private static hasProcessedEvents = false;
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129 ~this() { // this should be a static ~this, but I get a circular dep error
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130 if(!hasProcessedEvents) {
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131 Stdout("Warning: a window was created, but Application.run");
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132 Stdout(" was not called to process events").newline;
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133 }
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134 }
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135 protected:
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136 mixin WindowBackend;
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137 BorderSize _borderSize;
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138 Window _owner;
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139 WindowBorderStyle _borderStyle;
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140 bool _resizable = true;
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141 Panel _content;
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142 Control _focusedControl;
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143 package Control focusedControl() { return _focusedControl; }
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144 package void focusedControl(Control c) {
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145 _focusedControl = c;
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146 }
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147 override void dispatchPainting(PaintingEventArgs e) {
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148 Theme.current.Window_paint(this, e.graphics);
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149 super.dispatchPainting(e);
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150 }
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151 public:
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152 this() {
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153 _children = new ControlList();
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154 content = new Panel;
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155
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156 _visible = false;
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157 _minSize = Size(0, 0);
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158 _maxSize = Size(0, 0);
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159 _borderStyle = WindowBorderStyle.Normal;
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160 recreateHandle();
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161 }
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162 this(string text) {
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163 this();
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164 this.text = text;
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165 }
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166
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167 void content(Panel panel) {
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168 if(panel is null)
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169 throw new IllegalArgumentException("content must not be null");
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170 // TODO: remove handlers
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171 super.remove(panel);
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172 super.add(_content = panel);
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173 _content.resized += &whenContentResized;
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174 _content.minSizeChanged += &whenContentMinSizeChanged;
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175 _content.maxSizeChanged += &whenContentMaxSizeChanged;
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176
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177 auto best = _content.bestSize;
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178 _content.minSize = best;
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179 _content.maxSize = Size(_content.elasticX ? 0 : best.width,
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180 _content.elasticY ? 0 : best.height);
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181 resizable = _content.maxSize != best; // avoid calling elasticX/Y again
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182 _content.size = best;
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183
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184 }
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185 bool ignoreResize;
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186 void whenContentResized(EventArgs e) {
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187 if(ignoreResize)
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188 return;
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189 ignoreResize = true;
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190 size = _content.size + _borderSize;
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191 ignoreResize = false;
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192 }
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193 void whenContentMinSizeChanged(EventArgs e) {
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194 if(!handleCreated)
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195 return;
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196 backend_contentMinSizeChanged;
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197 }
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198 void whenContentMaxSizeChanged(EventArgs e) {
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199 if(!handleCreated)
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200 return;
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201 backend_contentMaxSizeChanged;
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202 }
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203 override void whenResized(EventArgs e) {
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204 if(ignoreResize)
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205 return;
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206 _content._location = Point(_borderSize.left, _borderSize.top);
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207 ignoreResize = true;
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208 _content.size = _size-_borderSize;
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209 ignoreResize = false;
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210 }
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211 Panel content() {
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212 return _content;
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213 }
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214 /**
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215 * If the handle has not yet been created, calling this will cause it to be.
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216 * Under the Windows backend, returns a HWND.
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217 * Under the X backend, returns a Window.
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218 * Returns: the backend specific native handle.
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219 */
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220 typeof(_handle) handle() {
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221 if(!handleCreated)
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222 recreateHandle();
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223 assert(Thread.getThis() is Application.eventThread ||
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224 Application.eventThread is null,
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225 "controls must be accessed and changed only on the event thread");
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226 return _handle;
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227 }
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228 bool handleCreated() { return backend_handleCreated; }
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229 void recreateHandle() {
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230 backend_recreateHandle();
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231 }
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232 override protected Graphics quickCreateGraphics() {
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233 if(!handleCreated)
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234 return null;
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235 return backend_quickCreateGraphics();
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236 }
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237 override bool onScreen() {
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238 return true;
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239 }
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240 override Point screenLocation() {
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241 return location;
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242 }
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243 override Point contentToScreen(Point pt) {
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244 return pt + location;
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245 }
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246 override Point screenToContent(Point pt) {
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247 return pt - location;
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248 }
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249 override bool topLevel() { return true; }
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250 override Container parent() { return null; }
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251 // TODO: because you should always be able to click a window from the taskbar,
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252 // then show it on taskbar if window has an owner, but don't if it does not
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253 void owner(Window w) {
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254 _owner = w;
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255 if(!handleCreated)
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256 return;
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257 recreateHandle();
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258 }
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259 Window owner() { return _owner; }
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260 alias Control.visible visible;
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261 void visible(bool b) {
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262 _visible = b;
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263 backend_visible = b;
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264 }
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265 /**
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266 * Gets or sets what border this window will have around its contents.
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267 * The default is WindowBorderStyle.Normal.
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268 */
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269 WindowBorderStyle borderStyle() { return _borderStyle; }
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270 /// ditto
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271 void borderStyle(WindowBorderStyle border) {
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272 if(border > WindowBorderStyle.Tool)
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273 throw new IllegalArgumentException("Window.borderStyle(): invalid border style");
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274 _borderStyle = border;
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275 backend_borderStyle = border;
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276 }
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277 alias Control.repaint repaint;
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278 void repaint(Rect rect) {
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279 if(!handleCreated)
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280 return;
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281 backend_repaint(rect);
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282 }
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283 /**
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284 * An array of rectangles in screen coordinates that the window will be
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285 * snapped to.
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286 */
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287 Rect[] snapRects = null;
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288 /**
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289 * Convenience method that sets SnapRects to an array
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290 * with just the specified Rect.
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291 */
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292 void snapRect(Rect rect) {
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293 snapRects = [rect];
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294 }
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295 /**
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296 * The SnapDistance specifies how close a window has to be to a
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297 * snap rectangle for the window to snap to it. The default is 10 pixels.
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298 */
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299 uint snapDistance = 10;
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300 /**
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301 * Gets or sets whether this window can be resized by the user.
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302 * The default is true.
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303 */
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304 bool resizable() { return _resizable; }
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305 /// ditto
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306 void resizable(bool b) { // TODO: set based upon whether content is elastic?
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307 _resizable = b;
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308 if(!handleCreated)
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309 return;
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310 backend_resizable = b;
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311 }
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312 // TODO: 1.0 MinSize -> contentMinSize MaxSize -> contentMaxSize
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313 alias Control.location location;
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314 void location(Point pt) {
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315 super.location(pt);
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316 if(!handleCreated)
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317 return;
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318 backend_location = pt;
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319 }
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320 alias Control.size size;
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321 void size(Size size) {
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322 super.size(size);
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323 _content.size = size - _borderSize;
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324 if(!handleCreated)
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325 return;
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326 backend_size = size;
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327 }
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328 /**
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329 * Gets the size of the border/frame around this window.
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330 */
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331 BorderSize borderSize() {
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332 return _borderSize;
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333 }
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334 alias Control.text text;
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335 void text(string str) {
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336 super.text(str);
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337 if(!handleCreated)
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338 return;
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339 backend_text = str;
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340 }
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341 /**
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342 * Moves this window to the specified position relative to
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343 * the specified control. If no control is specified, the
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344 * window is positioned relative to the screen.
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345 */
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346 void position(Position pos, Control c = null) {
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347 Rect rect;
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348 if(c && c.onScreen) {
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349 rect = c.screenLocation + c.size;
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350 } else {
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351 rect = desktopRect;
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352 }
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353 Point newLoc = Point();
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354 switch(pos) {
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355 case Position.TopLeft:
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356 case Position.Left:
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357 case Position.BottomLeft:
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358 newLoc.x = rect.x;
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359 break;
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360 case Position.Top:
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361 case Position.Center:
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362 case Position.Bottom:
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363 newLoc.x = rect.x + (rect.width - width)/2;
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364 break;
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365 case Position.TopRight:
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366 case Position.Right:
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367 case Position.BottomRight:
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368 newLoc.x = rect.x + rect.width - width;
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369 break;
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370 }
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371 switch(pos) {
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372 case Position.TopLeft:
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373 case Position.Top:
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374 case Position.TopRight:
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375 newLoc.y = rect.y;
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376 break;
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377 case Position.Left:
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378 case Position.Center:
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379 case Position.Right:
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380 newLoc.y = rect.y + (rect.height - height)/2;
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381 break;
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382 case Position.BottomLeft:
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383 case Position.Bottom:
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384 case Position.BottomRight:
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385 newLoc.y = rect.y + rect.height - height;
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386 break;
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387 }
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388 location = newLoc;
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389 }
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390 }
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391
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