Mercurial > projects > dwt-linux
annotate dwt/widgets/Button.d @ 152:17f8449522fd
overloads second walkthrough
author | Frank Benoit <benoit@tionex.de> |
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date | Thu, 31 Jan 2008 23:19:20 +0100 |
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children | 380bad9f6852 |
rev | line source |
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72 | 1 /******************************************************************************* |
37 | 2 * Copyright (c) 2000, 2007 IBM Corporation and others. |
3 * All rights reserved. This program and the accompanying materials | |
4 * are made available under the terms of the Eclipse Public License v1.0 | |
5 * which accompanies this distribution, and is available at | |
6 * http://www.eclipse.org/legal/epl-v10.html | |
7 * | |
8 * Contributors: | |
9 * IBM Corporation - initial API and implementation | |
72 | 10 * Port to the D programming language: |
11 * Frank Benoit <benoit@tionex.de> | |
37 | 12 *******************************************************************************/ |
13 module dwt.widgets.Button; | |
14 | |
15 import dwt.widgets.Control; | |
16 | |
44 | 17 import dwt.internal.gtk.OS; |
71 | 18 import dwt.DWT; |
44 | 19 import dwt.graphics.Point; |
20 import dwt.graphics.Image; | |
21 import dwt.widgets.ImageList; | |
22 import dwt.widgets.Composite; | |
23 import dwt.events.SelectionListener; | |
24 import dwt.widgets.TypedListener; | |
25 import dwt.widgets.Decorations; | |
37 | 26 |
44 | 27 import tango.stdc.stringz; |
60 | 28 import tango.io.Stdout; |
37 | 29 |
30 /** | |
31 * Instances of this class represent a selectable user interface object that | |
32 * issues notification when pressed and released. | |
33 * <dl> | |
34 * <dt><b>Styles:</b></dt> | |
35 * <dd>ARROW, CHECK, PUSH, RADIO, TOGGLE, FLAT</dd> | |
36 * <dd>UP, DOWN, LEFT, RIGHT, CENTER</dd> | |
37 * <dt><b>Events:</b></dt> | |
38 * <dd>Selection</dd> | |
39 * </dl> | |
40 * <p> | |
41 * Note: Only one of the styles ARROW, CHECK, PUSH, RADIO, and TOGGLE | |
42 * may be specified. | |
43 * </p><p> | |
44 * Note: Only one of the styles LEFT, RIGHT, and CENTER may be specified. | |
45 * </p><p> | |
46 * Note: Only one of the styles UP, DOWN, LEFT, and RIGHT may be specified | |
47 * when the ARROW style is specified. | |
48 * </p><p> | |
49 * IMPORTANT: This class is intended to be subclassed <em>only</em> | |
71 | 50 * within the DWT implementation. |
37 | 51 * </p> |
52 */ | |
44 | 53 public class Button : Control { |
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54 |
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55 alias Control.computeSize computeSize; |
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56 alias Control.mnemonicHit mnemonicHit; |
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57 alias Control.mnemonicMatch mnemonicMatch; |
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58 alias Control.setBackgroundColor setBackgroundColor; |
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59 alias Control.setForegroundColor setForegroundColor; |
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60 |
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61 GtkWidget* boxHandle, labelHandle, imageHandle, arrowHandle, groupHandle; |
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62 bool selected; |
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63 ImageList imageList; |
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64 Image image; |
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65 char[] text; |
37 | 66 |
67 /** | |
68 * Constructs a new instance of this class given its parent | |
69 * and a style value describing its behavior and appearance. | |
70 * <p> | |
71 * The style value is either one of the style constants defined in | |
71 | 72 * class <code>DWT</code> which is applicable to instances of this |
37 | 73 * class, or must be built by <em>bitwise OR</em>'ing together |
74 * (that is, using the <code>int</code> "|" operator) two or more | |
71 | 75 * of those <code>DWT</code> style constants. The class description |
37 | 76 * lists the style constants that are applicable to the class. |
77 * Style bits are also inherited from superclasses. | |
78 * </p> | |
79 * | |
80 * @param parent a composite control which will be the parent of the new instance (cannot be null) | |
81 * @param style the style of control to construct | |
82 * | |
83 * @exception IllegalArgumentException <ul> | |
84 * <li>ERROR_NULL_ARGUMENT - if the parent is null</li> | |
85 * </ul> | |
71 | 86 * @exception DWTException <ul> |
37 | 87 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the parent</li> |
88 * <li>ERROR_INVALID_SUBCLASS - if this class is not an allowed subclass</li> | |
89 * </ul> | |
90 * | |
71 | 91 * @see DWT#ARROW |
92 * @see DWT#CHECK | |
93 * @see DWT#PUSH | |
94 * @see DWT#RADIO | |
95 * @see DWT#TOGGLE | |
96 * @see DWT#FLAT | |
97 * @see DWT#LEFT | |
98 * @see DWT#RIGHT | |
99 * @see DWT#CENTER | |
37 | 100 * @see Widget#checkSubclass |
101 * @see Widget#getStyle | |
102 */ | |
44 | 103 public this (Composite parent, int style) { |
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104 super (parent, checkStyle (style)); |
37 | 105 } |
106 | |
107 static int checkStyle (int style) { | |
71 | 108 style = checkBits (style, DWT.PUSH, DWT.ARROW, DWT.CHECK, DWT.RADIO, DWT.TOGGLE, 0); |
109 if ((style & (DWT.PUSH | DWT.TOGGLE)) !is 0) { | |
110 return checkBits (style, DWT.CENTER, DWT.LEFT, DWT.RIGHT, 0, 0, 0); | |
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111 } |
71 | 112 if ((style & (DWT.CHECK | DWT.RADIO)) !is 0) { |
113 return checkBits (style, DWT.LEFT, DWT.RIGHT, DWT.CENTER, 0, 0, 0); | |
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114 } |
71 | 115 if ((style & DWT.ARROW) !is 0) { |
116 style |= DWT.NO_FOCUS; | |
117 return checkBits (style, DWT.UP, DWT.DOWN, DWT.LEFT, DWT.RIGHT, 0, 0); | |
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118 } |
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119 return style; |
37 | 120 } |
121 | |
122 /** | |
123 * Adds the listener to the collection of listeners who will | |
124 * be notified when the control is selected by the user, by sending | |
125 * it one of the messages defined in the <code>SelectionListener</code> | |
126 * interface. | |
127 * <p> | |
128 * <code>widgetSelected</code> is called when the control is selected by the user. | |
129 * <code>widgetDefaultSelected</code> is not called. | |
130 * </p> | |
131 * | |
132 * @param listener the listener which should be notified | |
133 * | |
134 * @exception IllegalArgumentException <ul> | |
135 * <li>ERROR_NULL_ARGUMENT - if the listener is null</li> | |
136 * </ul> | |
71 | 137 * @exception DWTException <ul> |
37 | 138 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
139 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
140 * </ul> | |
141 * | |
142 * @see SelectionListener | |
143 * @see #removeSelectionListener | |
144 * @see SelectionEvent | |
145 */ | |
146 public void addSelectionListener (SelectionListener listener) { | |
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147 checkWidget (); |
71 | 148 if (listener is null) error (DWT.ERROR_NULL_ARGUMENT); |
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149 TypedListener typedListener = new TypedListener (listener); |
71 | 150 addListener (DWT.Selection,typedListener); |
151 addListener (DWT.DefaultSelection,typedListener); | |
37 | 152 } |
153 | |
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154 override public Point computeSize (int wHint, int hHint, bool changed) { |
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155 checkWidget (); |
71 | 156 if (wHint !is DWT.DEFAULT && wHint < 0) wHint = 0; |
157 if (hHint !is DWT.DEFAULT && hHint < 0) hHint = 0; | |
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158 /* |
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159 * Feature in GTK, GtkCheckButton and GtkRadioButton allocate |
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160 * only the minimum size necessary for its child. This causes the child |
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161 * alignment to fail. The fix is to set the child size to the size |
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162 * of the button. |
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163 */ |
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164 forceResize (); |
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165 int reqWidth = -1, reqHeight = -1; |
71 | 166 if ((style & (DWT.CHECK | DWT.RADIO)) !is 0) { |
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167 OS.gtk_widget_get_size_request (boxHandle, &reqWidth, &reqHeight); |
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168 OS.gtk_widget_set_size_request (boxHandle, -1, -1); |
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169 } |
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170 Point size = computeNativeSize (handle, wHint, hHint, changed); |
71 | 171 if ((style & (DWT.CHECK | DWT.RADIO)) !is 0) { |
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172 OS.gtk_widget_set_size_request (boxHandle, reqWidth, reqHeight); |
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173 } |
71 | 174 if (wHint !is DWT.DEFAULT || hHint !is DWT.DEFAULT) { |
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175 if ((OS.GTK_WIDGET_FLAGS (handle) & OS.GTK_CAN_DEFAULT) !is 0) { |
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176 GtkBorder border; |
44 | 177 GtkBorder* buffer; |
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178 OS.gtk_widget_style_get1 (handle, OS.default_border.ptr, cast(int*)&buffer ); |
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179 if (buffer !is null) { |
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180 border = *buffer; |
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181 } else { |
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182 /* Use the GTK+ default value of 1 for each. */ |
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183 border.left = border.right = border.top = border.bottom = 1; |
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184 } |
71 | 185 if (wHint !is DWT.DEFAULT) size.x += border.left + border.right; |
186 if (hHint !is DWT.DEFAULT) size.y += border.top + border.bottom; | |
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187 } |
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188 } |
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189 return size; |
37 | 190 } |
191 | |
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192 override void createHandle (int index) { |
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193 state |= HANDLE; |
71 | 194 if ((style & DWT.PUSH) is 0) state |= THEME_BACKGROUND; |
195 int bits = DWT.ARROW | DWT.TOGGLE | DWT.CHECK | DWT.RADIO | DWT.PUSH; | |
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196 fixedHandle = cast(GtkWidget*)OS.g_object_new (display.gtk_fixed_get_type (), null); |
71 | 197 if (fixedHandle is null) error (DWT.ERROR_NO_HANDLES); |
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198 OS.gtk_fixed_set_has_window (cast(GtkFixed*)fixedHandle, true); |
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199 switch (style & bits) { |
71 | 200 case DWT.ARROW: |
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201 int arrow_type = OS.GTK_ARROW_UP; |
71 | 202 if ((style & DWT.UP) !is 0) arrow_type = OS.GTK_ARROW_UP; |
203 if ((style & DWT.DOWN) !is 0) arrow_type = OS.GTK_ARROW_DOWN; | |
204 if ((style & DWT.LEFT) !is 0) arrow_type = OS.GTK_ARROW_LEFT; | |
205 if ((style & DWT.RIGHT) !is 0) arrow_type = OS.GTK_ARROW_RIGHT; | |
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206 handle = OS.gtk_button_new (); |
71 | 207 if (handle is null) error (DWT.ERROR_NO_HANDLES); |
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208 arrowHandle = OS.gtk_arrow_new (arrow_type, OS.GTK_SHADOW_OUT); |
71 | 209 if (arrowHandle is null) error (DWT.ERROR_NO_HANDLES); |
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210 break; |
71 | 211 case DWT.TOGGLE: |
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212 handle = OS.gtk_toggle_button_new (); |
71 | 213 if (handle is null) error (DWT.ERROR_NO_HANDLES); |
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214 break; |
71 | 215 case DWT.CHECK: |
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216 handle = OS.gtk_check_button_new (); |
71 | 217 if (handle is null) error (DWT.ERROR_NO_HANDLES); |
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218 break; |
71 | 219 case DWT.RADIO: |
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220 /* |
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221 * Feature in GTK. In GTK, radio button must always be part of |
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222 * a radio button group. In a GTK radio group, one button is always |
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223 * selected. This means that it is not possible to have a single |
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224 * radio button that is unselected. This is necessary to allow |
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225 * applications to implement their own radio behavior or use radio |
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226 * buttons outside of radio groups. The fix is to create a hidden |
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227 * radio button for each radio button we create and add them |
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228 * to the same group. This allows the visible button to be |
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229 * unselected. |
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230 */ |
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231 groupHandle = cast(GtkWidget*)OS.gtk_radio_button_new (null); |
71 | 232 if (groupHandle is null) error (DWT.ERROR_NO_HANDLES); |
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233 OS.g_object_ref (groupHandle); |
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234 OS.gtk_object_sink (cast(GtkObject*)groupHandle); |
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235 handle = OS.gtk_radio_button_new ( OS.gtk_radio_button_get_group (cast(GtkRadioButton*)groupHandle)); |
71 | 236 if (handle is null) error (DWT.ERROR_NO_HANDLES); |
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237 break; |
71 | 238 case DWT.PUSH: |
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239 default: |
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240 handle = OS.gtk_button_new (); |
71 | 241 if (handle is null) error (DWT.ERROR_NO_HANDLES); |
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242 OS.GTK_WIDGET_SET_FLAGS(handle, OS.GTK_CAN_DEFAULT); |
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243 break; |
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244 } |
71 | 245 if ((style & DWT.ARROW) !is 0) { |
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246 OS.gtk_container_add (cast(GtkContainer*)handle, arrowHandle); |
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247 } else { |
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248 boxHandle = OS.gtk_hbox_new (false, 4); |
71 | 249 if (boxHandle is null) error (DWT.ERROR_NO_HANDLES); |
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250 labelHandle = OS.gtk_label_new_with_mnemonic (null); |
71 | 251 if (labelHandle is null) error (DWT.ERROR_NO_HANDLES); |
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252 imageHandle = OS.gtk_image_new (); |
71 | 253 if (imageHandle is null) error (DWT.ERROR_NO_HANDLES); |
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254 OS.gtk_container_add (cast(GtkContainer*)handle, boxHandle); |
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255 OS.gtk_container_add (cast(GtkContainer*)boxHandle, imageHandle); |
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256 OS.gtk_container_add (cast(GtkContainer*)boxHandle, labelHandle); |
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257 } |
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258 OS.gtk_container_add (cast(GtkContainer*)fixedHandle, handle); |
37 | 259 |
71 | 260 if ((style & DWT.ARROW) !is 0) return; |
261 _setAlignment (style & (DWT.LEFT | DWT.CENTER | DWT.RIGHT)); | |
37 | 262 } |
263 | |
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264 override void createWidget (int index) { |
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265 super.createWidget (index); |
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266 text = ""; |
37 | 267 } |
268 | |
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269 override void deregister () { |
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270 super.deregister (); |
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271 if (boxHandle !is null) display.removeWidget (boxHandle); |
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272 if (labelHandle !is null) display.removeWidget (labelHandle); |
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273 if (imageHandle !is null) display.removeWidget (imageHandle); |
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274 if (arrowHandle !is null) display.removeWidget (arrowHandle); |
37 | 275 } |
276 | |
44 | 277 override GtkWidget* fontHandle () { |
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278 if (labelHandle !is null) return labelHandle; |
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279 return super.fontHandle (); |
37 | 280 } |
281 | |
282 /** | |
283 * Returns a value which describes the position of the | |
284 * text or image in the receiver. The value will be one of | |
285 * <code>LEFT</code>, <code>RIGHT</code> or <code>CENTER</code> | |
286 * unless the receiver is an <code>ARROW</code> button, in | |
287 * which case, the alignment will indicate the direction of | |
288 * the arrow (one of <code>LEFT</code>, <code>RIGHT</code>, | |
289 * <code>UP</code> or <code>DOWN</code>). | |
290 * | |
291 * @return the alignment | |
292 * | |
71 | 293 * @exception DWTException <ul> |
37 | 294 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
295 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
296 * </ul> | |
297 */ | |
298 public int getAlignment () { | |
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299 checkWidget (); |
71 | 300 if ((style & DWT.ARROW) !is 0) { |
301 if ((style & DWT.UP) !is 0) return DWT.UP; | |
302 if ((style & DWT.DOWN) !is 0) return DWT.DOWN; | |
303 if ((style & DWT.LEFT) !is 0) return DWT.LEFT; | |
304 if ((style & DWT.RIGHT) !is 0) return DWT.RIGHT; | |
305 return DWT.UP; | |
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306 } |
71 | 307 if ((style & DWT.LEFT) !is 0) return DWT.LEFT; |
308 if ((style & DWT.CENTER) !is 0) return DWT.CENTER; | |
309 if ((style & DWT.RIGHT) !is 0) return DWT.RIGHT; | |
310 return DWT.LEFT; | |
37 | 311 } |
312 | |
313 /** | |
314 * Returns the receiver's image if it has one, or null | |
315 * if it does not. | |
316 * | |
317 * @return the receiver's image | |
318 * | |
71 | 319 * @exception DWTException <ul> |
37 | 320 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
321 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
322 * </ul> | |
323 */ | |
324 public Image getImage () { | |
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325 checkWidget (); |
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326 return image; |
37 | 327 } |
328 | |
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329 override char[] getNameText () { |
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330 return getText (); |
37 | 331 } |
332 | |
333 /** | |
334 * Returns <code>true</code> if the receiver is selected, | |
335 * and false otherwise. | |
336 * <p> | |
337 * When the receiver is of type <code>CHECK</code> or <code>RADIO</code>, | |
338 * it is selected when it is checked. When it is of type <code>TOGGLE</code>, | |
339 * it is selected when it is pushed in. If the receiver is of any other type, | |
340 * this method returns false. | |
341 * | |
342 * @return the selection state | |
343 * | |
71 | 344 * @exception DWTException <ul> |
37 | 345 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
346 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
347 * </ul> | |
348 */ | |
44 | 349 public bool getSelection () { |
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350 checkWidget (); |
71 | 351 if ((style & (DWT.CHECK | DWT.RADIO | DWT.TOGGLE)) is 0) return false; |
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352 return cast(bool)OS.gtk_toggle_button_get_active (cast(GtkToggleButton*)handle); |
37 | 353 } |
354 | |
355 /** | |
356 * Returns the receiver's text, which will be an empty | |
357 * string if it has never been set or if the receiver is | |
358 * an <code>ARROW</code> button. | |
359 * | |
360 * @return the receiver's text | |
361 * | |
71 | 362 * @exception DWTException <ul> |
37 | 363 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
364 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
365 * </ul> | |
366 */ | |
44 | 367 public char[] getText () { |
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368 checkWidget(); |
71 | 369 if ((style & DWT.ARROW) !is 0) return ""; |
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370 return text; |
37 | 371 } |
372 | |
44 | 373 override int /*long*/ gtk_button_press_event (GtkWidget* widget, GdkEventButton* event) { |
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374 auto result = super.gtk_button_press_event (widget, event); |
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375 if (result !is 0) return result; |
71 | 376 if ((style & DWT.RADIO) !is 0) selected = getSelection (); |
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377 return result; |
37 | 378 } |
379 | |
44 | 380 override int /*long*/ gtk_clicked (GtkWidget* widget) { |
71 | 381 if ((style & DWT.RADIO) !is 0) { |
382 if ((parent.getStyle () & DWT.NO_RADIO_GROUP) !is 0) { | |
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383 setSelection (!selected); |
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384 } else { |
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385 selectRadio (); |
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386 } |
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387 } |
71 | 388 postEvent (DWT.Selection); |
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389 return 0; |
37 | 390 } |
391 | |
44 | 392 override int /*long*/ gtk_focus_in_event (GtkWidget* widget, GdkEventFocus* event) { |
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393 auto result = super.gtk_focus_in_event (widget, event); |
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394 // widget could be disposed at this point |
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395 if (handle is null) return 0; |
71 | 396 if ((style & DWT.PUSH) !is 0 && OS.GTK_WIDGET_HAS_DEFAULT (handle)) { |
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397 Decorations menuShell = menuShell (); |
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398 menuShell.defaultButton = this; |
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399 } |
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400 return result; |
37 | 401 } |
402 | |
44 | 403 override int /*long*/ gtk_focus_out_event (GtkWidget* widget, GdkEventFocus* event) { |
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404 auto result = super.gtk_focus_out_event (widget, event); |
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405 // widget could be disposed at this point |
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406 if (handle is null) return 0; |
71 | 407 if ((style & DWT.PUSH) !is 0 && !OS.GTK_WIDGET_HAS_DEFAULT (handle)) { |
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408 Decorations menuShell = menuShell (); |
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409 if (menuShell.defaultButton is this) { |
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410 menuShell.defaultButton = null; |
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411 } |
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412 } |
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413 return result; |
37 | 414 } |
415 | |
44 | 416 override int /*long*/ gtk_key_press_event (GtkWidget* widget, GdkEventKey* event) { |
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417 auto result = super.gtk_key_press_event (widget, event); |
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418 if (result !is 0) return result; |
71 | 419 if ((style & DWT.RADIO) !is 0) selected = getSelection (); |
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420 return result; |
37 | 421 } |
422 | |
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423 override void hookEvents () { |
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424 super.hookEvents(); |
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425 OS.g_signal_connect_closure (handle, OS.clicked.ptr, display.closures [CLICKED], false); |
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426 if (labelHandle !is null) { |
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427 OS.g_signal_connect_closure_by_id (cast(void*)labelHandle, display.signalIds [MNEMONIC_ACTIVATE], 0, display.closures [MNEMONIC_ACTIVATE], false); |
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428 } |
37 | 429 } |
430 | |
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431 override bool isDescribedByLabel () { |
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432 return false; |
37 | 433 } |
434 | |
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435 override bool mnemonicHit (wchar key) { |
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436 if (labelHandle is null) return false; |
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437 bool result = super.mnemonicHit (labelHandle, key); |
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438 if (result) setFocus (); |
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439 return result; |
37 | 440 } |
441 | |
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442 override bool mnemonicMatch (wchar key) { |
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443 if (labelHandle is null) return false; |
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444 return mnemonicMatch (labelHandle, key); |
37 | 445 } |
446 | |
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447 override void register () { |
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448 super.register (); |
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449 if (boxHandle !is null) display.addWidget (boxHandle, this); |
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450 if (labelHandle !is null) display.addWidget (labelHandle, this); |
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451 if (imageHandle !is null) display.addWidget (imageHandle, this); |
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452 if (arrowHandle !is null) display.addWidget (arrowHandle, this); |
37 | 453 } |
454 | |
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455 override void releaseHandle () { |
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456 super.releaseHandle (); |
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457 boxHandle = imageHandle = labelHandle = arrowHandle = null; |
37 | 458 } |
459 | |
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460 override void releaseWidget () { |
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461 super.releaseWidget (); |
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462 if (groupHandle !is null) OS.g_object_unref (groupHandle); |
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463 groupHandle = null; |
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464 if (imageList !is null) imageList.dispose (); |
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465 imageList = null; |
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466 image = null; |
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467 text = null; |
37 | 468 } |
469 | |
470 /** | |
471 * Removes the listener from the collection of listeners who will | |
472 * be notified when the control is selected by the user. | |
473 * | |
474 * @param listener the listener which should no longer be notified | |
475 * | |
476 * @exception IllegalArgumentException <ul> | |
477 * <li>ERROR_NULL_ARGUMENT - if the listener is null</li> | |
478 * </ul> | |
71 | 479 * @exception DWTException <ul> |
37 | 480 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
481 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
482 * </ul> | |
483 * | |
484 * @see SelectionListener | |
485 * @see #addSelectionListener | |
486 */ | |
487 public void removeSelectionListener (SelectionListener listener) { | |
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488 checkWidget(); |
71 | 489 if (listener is null) error (DWT.ERROR_NULL_ARGUMENT); |
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490 if (eventTable is null) return; |
71 | 491 eventTable.unhook (DWT.Selection, listener); |
492 eventTable.unhook (DWT.DefaultSelection,listener); | |
37 | 493 } |
494 | |
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495 override void resizeHandle (int width, int height) { |
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496 super.resizeHandle (width, height); |
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497 /* |
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498 * Feature in GTK, GtkCheckButton and GtkRadioButton allocate |
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499 * only the minimum size necessary for its child. This causes the child |
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500 * alignment to fail. The fix is to set the child size to the size |
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501 * of the button. |
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502 */ |
71 | 503 if ((style & (DWT.CHECK | DWT.RADIO)) !is 0) { |
59
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504 OS.gtk_widget_set_size_request (boxHandle, width, -1); |
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505 } |
37 | 506 } |
507 | |
508 void selectRadio () { | |
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509 /* |
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510 * This code is intentionally commented. When two groups |
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511 * of radio buttons with the same parent are separated by |
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512 * another control, the correct behavior should be that |
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513 * the two groups act independently. This is consistent |
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514 * with radio tool and menu items. The commented code |
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515 * implements this behavior. |
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516 */ |
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517 // int index = 0; |
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518 // Control [] children = parent._getChildren (); |
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519 // while (index < children.length && children [index] !is this) index++; |
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520 // int i = index - 1; |
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521 // while (i >= 0 && children [i].setRadioSelection (false)) --i; |
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522 // int j = index + 1; |
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523 // while (j < children.length && children [j].setRadioSelection (false)) j++; |
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524 // setSelection (true); |
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525 Control [] children = parent._getChildren (); |
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526 for (int i=0; i<children.length; i++) { |
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527 Control child = children [i]; |
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528 if (this !is child) child.setRadioSelection (false); |
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529 } |
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530 setSelection (true); |
37 | 531 } |
532 | |
533 /** | |
534 * Controls how text, images and arrows will be displayed | |
535 * in the receiver. The argument should be one of | |
536 * <code>LEFT</code>, <code>RIGHT</code> or <code>CENTER</code> | |
537 * unless the receiver is an <code>ARROW</code> button, in | |
538 * which case, the argument indicates the direction of | |
539 * the arrow (one of <code>LEFT</code>, <code>RIGHT</code>, | |
540 * <code>UP</code> or <code>DOWN</code>). | |
541 * | |
542 * @param alignment the new alignment | |
543 * | |
71 | 544 * @exception DWTException <ul> |
37 | 545 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
546 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
547 * </ul> | |
548 */ | |
549 public void setAlignment (int alignment) { | |
59
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550 checkWidget (); |
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551 _setAlignment (alignment); |
37 | 552 } |
553 | |
554 void _setAlignment (int alignment) { | |
71 | 555 if ((style & DWT.ARROW) !is 0) { |
556 if ((style & (DWT.UP | DWT.DOWN | DWT.LEFT | DWT.RIGHT)) is 0) return; | |
557 style &= ~(DWT.UP | DWT.DOWN | DWT.LEFT | DWT.RIGHT); | |
558 style |= alignment & (DWT.UP | DWT.DOWN | DWT.LEFT | DWT.RIGHT); | |
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559 int arrow_type = OS.GTK_ARROW_UP; |
71 | 560 bool isRTL = (style & DWT.RIGHT_TO_LEFT) !is 0; |
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561 switch (alignment) { |
71 | 562 case DWT.UP: arrow_type = OS.GTK_ARROW_UP; break; |
563 case DWT.DOWN: arrow_type = OS.GTK_ARROW_DOWN; break; | |
564 case DWT.LEFT: arrow_type = isRTL ? OS.GTK_ARROW_RIGHT : OS.GTK_ARROW_LEFT; break; | |
565 case DWT.RIGHT: arrow_type = isRTL ? OS.GTK_ARROW_LEFT : OS.GTK_ARROW_RIGHT; break; | |
55
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566 default: |
59
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567 } |
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568 OS.gtk_arrow_set (cast(GtkArrow*)arrowHandle, arrow_type, OS.GTK_SHADOW_OUT); |
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569 return; |
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570 } |
71 | 571 if ((alignment & (DWT.LEFT | DWT.RIGHT | DWT.CENTER)) is 0) return; |
572 style &= ~(DWT.LEFT | DWT.RIGHT | DWT.CENTER); | |
573 style |= alignment & (DWT.LEFT | DWT.RIGHT | DWT.CENTER); | |
59
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574 /* Alignment not honoured when image and text are visible */ |
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575 bool bothVisible = OS.GTK_WIDGET_VISIBLE (labelHandle) && OS.GTK_WIDGET_VISIBLE (imageHandle); |
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576 if (bothVisible) { |
71 | 577 if ((style & (DWT.RADIO | DWT.CHECK)) !is 0) alignment = DWT.LEFT; |
578 if ((style & (DWT.PUSH | DWT.TOGGLE)) !is 0) alignment = DWT.CENTER; | |
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579 } |
71 | 580 if ((alignment & DWT.LEFT) !is 0) { |
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581 if (bothVisible) { |
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582 OS.gtk_box_set_child_packing (cast(GtkBox*)boxHandle, labelHandle, false, false, 0, OS.GTK_PACK_START); |
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583 OS.gtk_box_set_child_packing (cast(GtkBox*)boxHandle, imageHandle, false, false, 0, OS.GTK_PACK_START); |
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584 } |
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585 OS.gtk_misc_set_alignment (cast(GtkMisc*)labelHandle, 0.0f, 0.5f); |
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586 OS.gtk_label_set_justify (cast(GtkLabel*)labelHandle, OS.GTK_JUSTIFY_LEFT); |
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587 OS.gtk_misc_set_alignment (cast(GtkMisc*)imageHandle, 0.0f, 0.5f); |
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588 return; |
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589 } |
71 | 590 if ((alignment & DWT.CENTER) !is 0) { |
59
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591 if (bothVisible) { |
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592 OS.gtk_box_set_child_packing (cast(GtkBox*)boxHandle, labelHandle, true, true, 0, OS.GTK_PACK_END); |
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593 OS.gtk_box_set_child_packing (cast(GtkBox*)boxHandle, imageHandle, true, true, 0, OS.GTK_PACK_START); |
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594 OS.gtk_misc_set_alignment (cast(GtkMisc*)labelHandle, 0f, 0.5f); |
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595 OS.gtk_misc_set_alignment (cast(GtkMisc*)imageHandle, 1f, 0.5f); |
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596 } else { |
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597 OS.gtk_misc_set_alignment (cast(GtkMisc*)labelHandle, 0.5f, 0.5f); |
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598 OS.gtk_label_set_justify (cast(GtkLabel*)labelHandle, OS.GTK_JUSTIFY_CENTER); |
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599 OS.gtk_misc_set_alignment (cast(GtkMisc*)imageHandle, 0.5f, 0.5f); |
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600 } |
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601 return; |
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602 } |
71 | 603 if ((alignment & DWT.RIGHT) !is 0) { |
59
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604 if (bothVisible) { |
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605 OS.gtk_box_set_child_packing (cast(GtkBox*)boxHandle, labelHandle, false, false, 0, OS.GTK_PACK_END); |
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606 OS.gtk_box_set_child_packing (cast(GtkBox*)boxHandle, imageHandle, false, false, 0, OS.GTK_PACK_END); |
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607 } |
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608 OS.gtk_misc_set_alignment (cast(GtkMisc*)labelHandle, 1.0f, 0.5f); |
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609 OS.gtk_label_set_justify (cast(GtkLabel*)labelHandle, OS.GTK_JUSTIFY_RIGHT); |
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610 OS.gtk_misc_set_alignment (cast(GtkMisc*)imageHandle, 1.0f, 0.5f); |
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611 return; |
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612 } |
37 | 613 } |
614 | |
44 | 615 override void setBackgroundColor (GdkColor* color) { |
59
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616 super.setBackgroundColor (color); |
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617 setBackgroundColor(fixedHandle, color); |
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618 if (labelHandle !is null) setBackgroundColor(labelHandle, color); |
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619 if (imageHandle !is null) setBackgroundColor(imageHandle, color); |
37 | 620 } |
621 | |
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622 override void setFontDescription (PangoFontDescription* font) { |
59
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623 super.setFontDescription (font); |
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624 if (labelHandle !is null) OS.gtk_widget_modify_font (labelHandle, font); |
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625 if (imageHandle !is null) OS.gtk_widget_modify_font (imageHandle, font); |
37 | 626 } |
627 | |
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628 override bool setRadioSelection (bool value) { |
71 | 629 if ((style & DWT.RADIO) is 0) return false; |
59
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630 if (getSelection () !is value) { |
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631 setSelection (value); |
71 | 632 postEvent (DWT.Selection); |
59
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633 } |
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634 return true; |
37 | 635 } |
636 | |
44 | 637 override void setForegroundColor (GdkColor* color) { |
59
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638 super.setForegroundColor (color); |
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639 setForegroundColor (fixedHandle, color); |
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640 if (labelHandle !is null) setForegroundColor (labelHandle, color); |
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641 if (imageHandle !is null) setForegroundColor (imageHandle, color); |
37 | 642 } |
643 | |
644 /** | |
645 * Sets the receiver's image to the argument, which may be | |
646 * <code>null</code> indicating that no image should be displayed. | |
647 * <p> | |
648 * Note that a Button can display an image and text simultaneously | |
649 * on Windows (starting with XP), GTK+ and OSX. On other platforms, | |
650 * a Button that has an image and text set into it will display the | |
651 * image or text that was set most recently. | |
652 * </p> | |
653 * @param image the image to display on the receiver (may be <code>null</code>) | |
654 * | |
655 * @exception IllegalArgumentException <ul> | |
656 * <li>ERROR_INVALID_ARGUMENT - if the image has been disposed</li> | |
657 * </ul> | |
71 | 658 * @exception DWTException <ul> |
37 | 659 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
660 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
661 * </ul> | |
662 */ | |
663 public void setImage (Image image) { | |
59
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664 checkWidget (); |
71 | 665 if ((style & DWT.ARROW) !is 0) return; |
59
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666 if (imageList !is null) imageList.dispose (); |
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667 imageList = null; |
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668 if (image !is null) { |
71 | 669 if (image.isDisposed()) error (DWT.ERROR_INVALID_ARGUMENT); |
59
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670 imageList = new ImageList (); |
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671 int imageIndex = imageList.add (image); |
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672 auto pixbuf = imageList.getPixbuf (imageIndex); |
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673 OS.gtk_image_set_from_pixbuf (cast(GtkImage*)imageHandle, pixbuf); |
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674 if (text.length is 0) OS.gtk_widget_hide (labelHandle); |
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675 OS.gtk_widget_show (imageHandle); |
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676 } else { |
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677 OS.gtk_image_set_from_pixbuf (cast(GtkImage*)imageHandle, null); |
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678 OS.gtk_widget_show (labelHandle); |
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679 OS.gtk_widget_hide (imageHandle); |
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680 } |
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681 this.image = image; |
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682 _setAlignment (style); |
37 | 683 } |
684 | |
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685 override void setOrientation () { |
59
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686 super.setOrientation (); |
71 | 687 if ((style & DWT.RIGHT_TO_LEFT) !is 0) { |
59
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688 if (labelHandle !is null) OS.gtk_widget_set_direction (labelHandle, OS.GTK_TEXT_DIR_RTL); |
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689 if (imageHandle !is null) OS.gtk_widget_set_direction (imageHandle, OS.GTK_TEXT_DIR_RTL); |
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690 if (arrowHandle !is null) { |
71 | 691 switch (style & (DWT.LEFT | DWT.RIGHT)) { |
692 case DWT.LEFT: OS.gtk_arrow_set (cast(GtkArrow*)arrowHandle, OS.GTK_ARROW_RIGHT, OS.GTK_SHADOW_OUT); break; | |
693 case DWT.RIGHT: OS.gtk_arrow_set (cast(GtkArrow*)arrowHandle, OS.GTK_ARROW_LEFT, OS.GTK_SHADOW_OUT); break; | |
55
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Checked and inserted missing default switch cases.
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694 default: |
59
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695 } |
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696 } |
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697 } |
37 | 698 } |
699 | |
700 /** | |
701 * Sets the selection state of the receiver, if it is of type <code>CHECK</code>, | |
702 * <code>RADIO</code>, or <code>TOGGLE</code>. | |
703 * | |
704 * <p> | |
705 * When the receiver is of type <code>CHECK</code> or <code>RADIO</code>, | |
706 * it is selected when it is checked. When it is of type <code>TOGGLE</code>, | |
707 * it is selected when it is pushed in. | |
708 * | |
709 * @param selected the new selection state | |
710 * | |
71 | 711 * @exception DWTException <ul> |
37 | 712 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
713 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
714 * </ul> | |
715 */ | |
44 | 716 public void setSelection (bool selected) { |
59
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717 checkWidget(); |
71 | 718 if ((style & (DWT.CHECK | DWT.RADIO | DWT.TOGGLE)) is 0) return; |
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Fixed signal blocking/unblocking:
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719 OS.g_signal_handlers_block_matched (handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, null, null, udCLICKED); |
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720 OS.gtk_toggle_button_set_active (cast(GtkToggleButton*)handle, selected); |
71 | 721 if ((style & DWT.RADIO) !is 0) OS.gtk_toggle_button_set_active (cast(GtkToggleButton*)groupHandle, !selected); |
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722 OS.g_signal_handlers_unblock_matched (handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, null, null, udCLICKED); |
37 | 723 } |
724 | |
725 /** | |
726 * Sets the receiver's text. | |
727 * <p> | |
728 * This method sets the button label. The label may include | |
729 * the mnemonic character but must not contain line delimiters. | |
730 * </p> | |
731 * <p> | |
732 * Mnemonics are indicated by an '&' that causes the next | |
733 * character to be the mnemonic. When the user presses a | |
734 * key sequence that matches the mnemonic, a selection | |
735 * event occurs. On most platforms, the mnemonic appears | |
736 * underlined but may be emphasized in a platform specific | |
737 * manner. The mnemonic indicator character '&' can be | |
738 * escaped by doubling it in the string, causing a single | |
739 * '&' to be displayed. | |
740 * </p><p> | |
741 * Note that a Button can display an image and text simultaneously | |
742 * on Windows (starting with XP), GTK+ and OSX. On other platforms, | |
743 * a Button that has an image and text set into it will display the | |
744 * image or text that was set most recently. | |
745 * </p> | |
746 * @param string the new text | |
747 * | |
748 * @exception IllegalArgumentException <ul> | |
749 * <li>ERROR_NULL_ARGUMENT - if the text is null</li> | |
750 * </ul> | |
71 | 751 * @exception DWTException <ul> |
37 | 752 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
753 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
754 * </ul> | |
755 */ | |
44 | 756 public void setText (char[] string) { |
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757 checkWidget (); |
71 | 758 if (string is null) error (DWT.ERROR_NULL_ARGUMENT); |
759 if ((style & DWT.ARROW) !is 0) return; | |
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760 text = string; |
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761 char [] chars = fixMnemonic (string); |
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762 OS.gtk_label_set_text_with_mnemonic (cast(GtkLabel*)labelHandle, toStringz(chars)); |
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763 if (image is null) OS.gtk_widget_hide (imageHandle); |
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764 OS.gtk_widget_show (labelHandle); |
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765 _setAlignment (style); |
37 | 766 } |
767 | |
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768 override void showWidget () { |
59
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769 super.showWidget (); |
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770 if (boxHandle !is null) OS.gtk_widget_show (boxHandle); |
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771 if (labelHandle !is null) OS.gtk_widget_show (labelHandle); |
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772 if (arrowHandle !is null) OS.gtk_widget_show (arrowHandle); |
37 | 773 } |
774 | |
44 | 775 override int traversalCode (int key, GdkEventKey* event) { |
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776 int code = super.traversalCode (key, event); |
71 | 777 if ((style & DWT.RADIO) !is 0) code |= DWT.TRAVERSE_ARROW_NEXT | DWT.TRAVERSE_ARROW_PREVIOUS; |
59
8cec8f536af3
All D sources complete gvim retab (4 spaces), bug with Composite moveAbove/moveBelow fixed.
Frank Benoit <benoit@tionex.de>
parents:
58
diff
changeset
|
778 return code; |
37 | 779 } |
780 | |
781 } |