Mercurial > projects > dwt-linux
annotate dwt/widgets/Button.d @ 248:34409a2fc053
Fix call OS.gtk_label_set_text_with_mnemonic with valid ptr, even for zero length strings.
author | Frank Benoit <benoit@tionex.de> |
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date | Thu, 22 May 2008 19:00:47 +0200 |
parents | ce446666f5a2 |
children | 5a30aa9820f3 |
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 | |
238 | 15 import dwt.dwthelper.utils; |
16 | |
37 | 17 import dwt.widgets.Control; |
18 | |
44 | 19 import dwt.internal.gtk.OS; |
71 | 20 import dwt.DWT; |
44 | 21 import dwt.graphics.Point; |
22 import dwt.graphics.Image; | |
23 import dwt.widgets.ImageList; | |
24 import dwt.widgets.Composite; | |
25 import dwt.events.SelectionListener; | |
26 import dwt.widgets.TypedListener; | |
27 import dwt.widgets.Decorations; | |
37 | 28 |
44 | 29 import tango.stdc.stringz; |
60 | 30 import tango.io.Stdout; |
37 | 31 |
32 /** | |
33 * Instances of this class represent a selectable user interface object that | |
34 * issues notification when pressed and released. | |
35 * <dl> | |
36 * <dt><b>Styles:</b></dt> | |
37 * <dd>ARROW, CHECK, PUSH, RADIO, TOGGLE, FLAT</dd> | |
38 * <dd>UP, DOWN, LEFT, RIGHT, CENTER</dd> | |
39 * <dt><b>Events:</b></dt> | |
40 * <dd>Selection</dd> | |
41 * </dl> | |
42 * <p> | |
43 * Note: Only one of the styles ARROW, CHECK, PUSH, RADIO, and TOGGLE | |
44 * may be specified. | |
45 * </p><p> | |
46 * Note: Only one of the styles LEFT, RIGHT, and CENTER may be specified. | |
47 * </p><p> | |
48 * Note: Only one of the styles UP, DOWN, LEFT, and RIGHT may be specified | |
49 * when the ARROW style is specified. | |
50 * </p><p> | |
51 * IMPORTANT: This class is intended to be subclassed <em>only</em> | |
71 | 52 * within the DWT implementation. |
37 | 53 * </p> |
54 */ | |
44 | 55 public class Button : Control { |
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56 |
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57 alias Control.computeSize computeSize; |
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58 alias Control.mnemonicHit mnemonicHit; |
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59 alias Control.mnemonicMatch mnemonicMatch; |
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60 alias Control.setBackgroundColor setBackgroundColor; |
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61 alias Control.setForegroundColor setForegroundColor; |
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62 |
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63 GtkWidget* boxHandle, labelHandle, imageHandle, arrowHandle, groupHandle; |
240 | 64 bool selected, grayed; |
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65 ImageList imageList; |
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66 Image image; |
238 | 67 String text; |
37 | 68 |
69 /** | |
70 * Constructs a new instance of this class given its parent | |
71 * and a style value describing its behavior and appearance. | |
72 * <p> | |
73 * The style value is either one of the style constants defined in | |
71 | 74 * class <code>DWT</code> which is applicable to instances of this |
37 | 75 * class, or must be built by <em>bitwise OR</em>'ing together |
76 * (that is, using the <code>int</code> "|" operator) two or more | |
71 | 77 * of those <code>DWT</code> style constants. The class description |
37 | 78 * lists the style constants that are applicable to the class. |
79 * Style bits are also inherited from superclasses. | |
80 * </p> | |
81 * | |
82 * @param parent a composite control which will be the parent of the new instance (cannot be null) | |
83 * @param style the style of control to construct | |
84 * | |
85 * @exception IllegalArgumentException <ul> | |
86 * <li>ERROR_NULL_ARGUMENT - if the parent is null</li> | |
87 * </ul> | |
71 | 88 * @exception DWTException <ul> |
37 | 89 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the parent</li> |
90 * <li>ERROR_INVALID_SUBCLASS - if this class is not an allowed subclass</li> | |
91 * </ul> | |
92 * | |
71 | 93 * @see DWT#ARROW |
94 * @see DWT#CHECK | |
95 * @see DWT#PUSH | |
96 * @see DWT#RADIO | |
97 * @see DWT#TOGGLE | |
98 * @see DWT#FLAT | |
99 * @see DWT#LEFT | |
100 * @see DWT#RIGHT | |
101 * @see DWT#CENTER | |
37 | 102 * @see Widget#checkSubclass |
103 * @see Widget#getStyle | |
104 */ | |
44 | 105 public this (Composite parent, int style) { |
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106 super (parent, checkStyle (style)); |
37 | 107 } |
108 | |
109 static int checkStyle (int style) { | |
71 | 110 style = checkBits (style, DWT.PUSH, DWT.ARROW, DWT.CHECK, DWT.RADIO, DWT.TOGGLE, 0); |
111 if ((style & (DWT.PUSH | DWT.TOGGLE)) !is 0) { | |
112 return checkBits (style, DWT.CENTER, DWT.LEFT, DWT.RIGHT, 0, 0, 0); | |
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113 } |
71 | 114 if ((style & (DWT.CHECK | DWT.RADIO)) !is 0) { |
115 return checkBits (style, DWT.LEFT, DWT.RIGHT, DWT.CENTER, 0, 0, 0); | |
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116 } |
71 | 117 if ((style & DWT.ARROW) !is 0) { |
118 style |= DWT.NO_FOCUS; | |
119 return checkBits (style, DWT.UP, DWT.DOWN, DWT.LEFT, DWT.RIGHT, 0, 0); | |
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120 } |
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121 return style; |
37 | 122 } |
123 | |
124 /** | |
125 * Adds the listener to the collection of listeners who will | |
126 * be notified when the control is selected by the user, by sending | |
127 * it one of the messages defined in the <code>SelectionListener</code> | |
128 * interface. | |
129 * <p> | |
130 * <code>widgetSelected</code> is called when the control is selected by the user. | |
131 * <code>widgetDefaultSelected</code> is not called. | |
132 * </p> | |
133 * | |
134 * @param listener the listener which should be notified | |
135 * | |
136 * @exception IllegalArgumentException <ul> | |
137 * <li>ERROR_NULL_ARGUMENT - if the listener is null</li> | |
138 * </ul> | |
71 | 139 * @exception DWTException <ul> |
37 | 140 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
141 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
142 * </ul> | |
143 * | |
144 * @see SelectionListener | |
145 * @see #removeSelectionListener | |
146 * @see SelectionEvent | |
147 */ | |
148 public void addSelectionListener (SelectionListener listener) { | |
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149 checkWidget (); |
71 | 150 if (listener is null) error (DWT.ERROR_NULL_ARGUMENT); |
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151 TypedListener typedListener = new TypedListener (listener); |
71 | 152 addListener (DWT.Selection,typedListener); |
153 addListener (DWT.DefaultSelection,typedListener); | |
37 | 154 } |
155 | |
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156 override public Point computeSize (int wHint, int hHint, bool changed) { |
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157 checkWidget (); |
71 | 158 if (wHint !is DWT.DEFAULT && wHint < 0) wHint = 0; |
159 if (hHint !is DWT.DEFAULT && hHint < 0) hHint = 0; | |
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160 /* |
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161 * Feature in GTK, GtkCheckButton and GtkRadioButton allocate |
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162 * only the minimum size necessary for its child. This causes the child |
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163 * alignment to fail. The fix is to set the child size to the size |
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164 * of the button. |
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165 */ |
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166 forceResize (); |
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167 int reqWidth = -1, reqHeight = -1; |
71 | 168 if ((style & (DWT.CHECK | DWT.RADIO)) !is 0) { |
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169 OS.gtk_widget_get_size_request (boxHandle, &reqWidth, &reqHeight); |
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170 OS.gtk_widget_set_size_request (boxHandle, -1, -1); |
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171 } |
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172 Point size = computeNativeSize (handle, wHint, hHint, changed); |
71 | 173 if ((style & (DWT.CHECK | DWT.RADIO)) !is 0) { |
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174 OS.gtk_widget_set_size_request (boxHandle, reqWidth, reqHeight); |
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175 } |
71 | 176 if (wHint !is DWT.DEFAULT || hHint !is DWT.DEFAULT) { |
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177 if ((OS.GTK_WIDGET_FLAGS (handle) & OS.GTK_CAN_DEFAULT) !is 0) { |
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178 GtkBorder border; |
44 | 179 GtkBorder* buffer; |
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180 OS.gtk_widget_style_get1 (handle, OS.default_border.ptr, cast(int*)&buffer ); |
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181 if (buffer !is null) { |
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182 border = *buffer; |
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183 } else { |
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184 /* Use the GTK+ default value of 1 for each. */ |
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185 border.left = border.right = border.top = border.bottom = 1; |
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186 } |
71 | 187 if (wHint !is DWT.DEFAULT) size.x += border.left + border.right; |
188 if (hHint !is DWT.DEFAULT) size.y += border.top + border.bottom; | |
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189 } |
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190 } |
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191 return size; |
37 | 192 } |
193 | |
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194 override void createHandle (int index) { |
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195 state |= HANDLE; |
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196 if ((style & (DWT.PUSH | DWT.TOGGLE)) is 0) state |= THEME_BACKGROUND; |
71 | 197 int bits = DWT.ARROW | DWT.TOGGLE | DWT.CHECK | DWT.RADIO | DWT.PUSH; |
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198 fixedHandle = cast(GtkWidget*)OS.g_object_new (display.gtk_fixed_get_type (), null); |
71 | 199 if (fixedHandle is null) error (DWT.ERROR_NO_HANDLES); |
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200 OS.gtk_fixed_set_has_window (cast(GtkFixed*)fixedHandle, true); |
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201 switch (style & bits) { |
71 | 202 case DWT.ARROW: |
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203 int arrow_type = OS.GTK_ARROW_UP; |
71 | 204 if ((style & DWT.UP) !is 0) arrow_type = OS.GTK_ARROW_UP; |
205 if ((style & DWT.DOWN) !is 0) arrow_type = OS.GTK_ARROW_DOWN; | |
206 if ((style & DWT.LEFT) !is 0) arrow_type = OS.GTK_ARROW_LEFT; | |
207 if ((style & DWT.RIGHT) !is 0) arrow_type = OS.GTK_ARROW_RIGHT; | |
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208 handle = OS.gtk_button_new (); |
71 | 209 if (handle is null) error (DWT.ERROR_NO_HANDLES); |
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210 arrowHandle = OS.gtk_arrow_new (arrow_type, OS.GTK_SHADOW_OUT); |
71 | 211 if (arrowHandle is null) error (DWT.ERROR_NO_HANDLES); |
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212 break; |
71 | 213 case DWT.TOGGLE: |
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214 handle = OS.gtk_toggle_button_new (); |
71 | 215 if (handle is null) error (DWT.ERROR_NO_HANDLES); |
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216 break; |
71 | 217 case DWT.CHECK: |
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218 handle = OS.gtk_check_button_new (); |
71 | 219 if (handle is null) error (DWT.ERROR_NO_HANDLES); |
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220 break; |
71 | 221 case DWT.RADIO: |
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222 /* |
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223 * Feature in GTK. In GTK, radio button must always be part of |
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224 * a radio button group. In a GTK radio group, one button is always |
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225 * selected. This means that it is not possible to have a single |
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226 * radio button that is unselected. This is necessary to allow |
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227 * applications to implement their own radio behavior or use radio |
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228 * buttons outside of radio groups. The fix is to create a hidden |
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229 * radio button for each radio button we create and add them |
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230 * to the same group. This allows the visible button to be |
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231 * unselected. |
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232 */ |
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233 groupHandle = cast(GtkWidget*)OS.gtk_radio_button_new (null); |
71 | 234 if (groupHandle is null) error (DWT.ERROR_NO_HANDLES); |
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235 OS.g_object_ref (groupHandle); |
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236 OS.gtk_object_sink (cast(GtkObject*)groupHandle); |
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237 handle = OS.gtk_radio_button_new ( OS.gtk_radio_button_get_group (cast(GtkRadioButton*)groupHandle)); |
71 | 238 if (handle is null) error (DWT.ERROR_NO_HANDLES); |
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239 break; |
71 | 240 case DWT.PUSH: |
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241 default: |
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242 handle = OS.gtk_button_new (); |
71 | 243 if (handle is null) error (DWT.ERROR_NO_HANDLES); |
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244 OS.GTK_WIDGET_SET_FLAGS(handle, OS.GTK_CAN_DEFAULT); |
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245 break; |
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246 } |
71 | 247 if ((style & DWT.ARROW) !is 0) { |
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248 OS.gtk_container_add (cast(GtkContainer*)handle, arrowHandle); |
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249 } else { |
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250 boxHandle = OS.gtk_hbox_new (false, 4); |
71 | 251 if (boxHandle is null) error (DWT.ERROR_NO_HANDLES); |
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252 labelHandle = OS.gtk_label_new_with_mnemonic (null); |
71 | 253 if (labelHandle is null) error (DWT.ERROR_NO_HANDLES); |
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254 imageHandle = OS.gtk_image_new (); |
71 | 255 if (imageHandle is null) error (DWT.ERROR_NO_HANDLES); |
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256 OS.gtk_container_add (cast(GtkContainer*)handle, boxHandle); |
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257 OS.gtk_container_add (cast(GtkContainer*)boxHandle, imageHandle); |
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258 OS.gtk_container_add (cast(GtkContainer*)boxHandle, labelHandle); |
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259 } |
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260 OS.gtk_container_add (cast(GtkContainer*)fixedHandle, handle); |
37 | 261 |
71 | 262 if ((style & DWT.ARROW) !is 0) return; |
263 _setAlignment (style & (DWT.LEFT | DWT.CENTER | DWT.RIGHT)); | |
37 | 264 } |
265 | |
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266 override void createWidget (int index) { |
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267 super.createWidget (index); |
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268 text = ""; |
37 | 269 } |
270 | |
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271 override void deregister () { |
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272 super.deregister (); |
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273 if (boxHandle !is null) display.removeWidget (boxHandle); |
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274 if (labelHandle !is null) display.removeWidget (labelHandle); |
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275 if (imageHandle !is null) display.removeWidget (imageHandle); |
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276 if (arrowHandle !is null) display.removeWidget (arrowHandle); |
37 | 277 } |
278 | |
44 | 279 override GtkWidget* fontHandle () { |
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280 if (labelHandle !is null) return labelHandle; |
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281 return super.fontHandle (); |
37 | 282 } |
283 | |
284 /** | |
285 * Returns a value which describes the position of the | |
286 * text or image in the receiver. The value will be one of | |
287 * <code>LEFT</code>, <code>RIGHT</code> or <code>CENTER</code> | |
288 * unless the receiver is an <code>ARROW</code> button, in | |
289 * which case, the alignment will indicate the direction of | |
290 * the arrow (one of <code>LEFT</code>, <code>RIGHT</code>, | |
291 * <code>UP</code> or <code>DOWN</code>). | |
292 * | |
293 * @return the alignment | |
294 * | |
71 | 295 * @exception DWTException <ul> |
37 | 296 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
297 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
298 * </ul> | |
299 */ | |
300 public int getAlignment () { | |
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301 checkWidget (); |
71 | 302 if ((style & DWT.ARROW) !is 0) { |
303 if ((style & DWT.UP) !is 0) return DWT.UP; | |
304 if ((style & DWT.DOWN) !is 0) return DWT.DOWN; | |
305 if ((style & DWT.LEFT) !is 0) return DWT.LEFT; | |
306 if ((style & DWT.RIGHT) !is 0) return DWT.RIGHT; | |
307 return DWT.UP; | |
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308 } |
71 | 309 if ((style & DWT.LEFT) !is 0) return DWT.LEFT; |
310 if ((style & DWT.CENTER) !is 0) return DWT.CENTER; | |
311 if ((style & DWT.RIGHT) !is 0) return DWT.RIGHT; | |
312 return DWT.LEFT; | |
37 | 313 } |
314 | |
240 | 315 public bool getGrayed () { |
316 checkWidget(); | |
317 if ((style & DWT.CHECK) is 0) return false; | |
318 return grayed; | |
319 } | |
320 | |
37 | 321 /** |
322 * Returns the receiver's image if it has one, or null | |
323 * if it does not. | |
324 * | |
325 * @return the receiver's image | |
326 * | |
71 | 327 * @exception DWTException <ul> |
37 | 328 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
329 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
330 * </ul> | |
331 */ | |
332 public Image getImage () { | |
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333 checkWidget (); |
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334 return image; |
37 | 335 } |
336 | |
238 | 337 override String getNameText () { |
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338 return getText (); |
37 | 339 } |
340 | |
341 /** | |
342 * Returns <code>true</code> if the receiver is selected, | |
343 * and false otherwise. | |
344 * <p> | |
345 * When the receiver is of type <code>CHECK</code> or <code>RADIO</code>, | |
346 * it is selected when it is checked. When it is of type <code>TOGGLE</code>, | |
347 * it is selected when it is pushed in. If the receiver is of any other type, | |
348 * this method returns false. | |
349 * | |
350 * @return the selection state | |
351 * | |
71 | 352 * @exception DWTException <ul> |
37 | 353 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
354 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
355 * </ul> | |
356 */ | |
44 | 357 public bool getSelection () { |
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358 checkWidget (); |
71 | 359 if ((style & (DWT.CHECK | DWT.RADIO | DWT.TOGGLE)) is 0) return false; |
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360 return cast(bool)OS.gtk_toggle_button_get_active (cast(GtkToggleButton*)handle); |
37 | 361 } |
362 | |
363 /** | |
364 * Returns the receiver's text, which will be an empty | |
365 * string if it has never been set or if the receiver is | |
366 * an <code>ARROW</code> button. | |
367 * | |
368 * @return the receiver's text | |
369 * | |
71 | 370 * @exception DWTException <ul> |
37 | 371 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
372 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
373 * </ul> | |
374 */ | |
238 | 375 public String getText () { |
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376 checkWidget(); |
71 | 377 if ((style & DWT.ARROW) !is 0) return ""; |
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378 return text; |
37 | 379 } |
380 | |
44 | 381 override int /*long*/ gtk_button_press_event (GtkWidget* widget, GdkEventButton* event) { |
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382 auto result = super.gtk_button_press_event (widget, event); |
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383 if (result !is 0) return result; |
71 | 384 if ((style & DWT.RADIO) !is 0) selected = getSelection (); |
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385 return result; |
37 | 386 } |
387 | |
44 | 388 override int /*long*/ gtk_clicked (GtkWidget* widget) { |
71 | 389 if ((style & DWT.RADIO) !is 0) { |
390 if ((parent.getStyle () & DWT.NO_RADIO_GROUP) !is 0) { | |
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391 setSelection (!selected); |
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392 } else { |
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393 selectRadio (); |
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394 } |
240 | 395 } else { |
396 if ((style & DWT.CHECK) !is 0) { | |
397 if (grayed) { | |
398 if (OS.gtk_toggle_button_get_active (handle)) { | |
399 OS.gtk_toggle_button_set_inconsistent (handle, true); | |
400 } else { | |
401 OS.gtk_toggle_button_set_inconsistent (handle, false); | |
402 } | |
403 } | |
404 } | |
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405 } |
71 | 406 postEvent (DWT.Selection); |
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407 return 0; |
37 | 408 } |
409 | |
44 | 410 override int /*long*/ gtk_focus_in_event (GtkWidget* widget, GdkEventFocus* event) { |
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411 auto result = super.gtk_focus_in_event (widget, event); |
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412 // widget could be disposed at this point |
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413 if (handle is null) return 0; |
71 | 414 if ((style & DWT.PUSH) !is 0 && OS.GTK_WIDGET_HAS_DEFAULT (handle)) { |
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415 Decorations menuShell = menuShell (); |
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416 menuShell.defaultButton = this; |
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417 } |
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418 return result; |
37 | 419 } |
420 | |
44 | 421 override int /*long*/ gtk_focus_out_event (GtkWidget* widget, GdkEventFocus* event) { |
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422 auto result = super.gtk_focus_out_event (widget, event); |
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423 // widget could be disposed at this point |
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424 if (handle is null) return 0; |
71 | 425 if ((style & DWT.PUSH) !is 0 && !OS.GTK_WIDGET_HAS_DEFAULT (handle)) { |
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426 Decorations menuShell = menuShell (); |
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427 if (menuShell.defaultButton is this) { |
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428 menuShell.defaultButton = null; |
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429 } |
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430 } |
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431 return result; |
37 | 432 } |
433 | |
44 | 434 override int /*long*/ gtk_key_press_event (GtkWidget* widget, GdkEventKey* event) { |
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435 auto result = super.gtk_key_press_event (widget, event); |
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436 if (result !is 0) return result; |
71 | 437 if ((style & DWT.RADIO) !is 0) selected = getSelection (); |
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438 return result; |
37 | 439 } |
440 | |
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441 override void hookEvents () { |
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442 super.hookEvents(); |
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443 OS.g_signal_connect_closure (handle, OS.clicked.ptr, display.closures [CLICKED], false); |
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444 if (labelHandle !is null) { |
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445 OS.g_signal_connect_closure_by_id (cast(void*)labelHandle, display.signalIds [MNEMONIC_ACTIVATE], 0, display.closures [MNEMONIC_ACTIVATE], false); |
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446 } |
37 | 447 } |
448 | |
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449 override bool isDescribedByLabel () { |
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450 return false; |
37 | 451 } |
452 | |
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453 override bool mnemonicHit (wchar key) { |
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454 if (labelHandle is null) return false; |
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455 bool result = super.mnemonicHit (labelHandle, key); |
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456 if (result) setFocus (); |
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457 return result; |
37 | 458 } |
459 | |
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460 override bool mnemonicMatch (wchar key) { |
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461 if (labelHandle is null) return false; |
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462 return mnemonicMatch (labelHandle, key); |
37 | 463 } |
464 | |
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465 override void register () { |
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466 super.register (); |
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467 if (boxHandle !is null) display.addWidget (boxHandle, this); |
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468 if (labelHandle !is null) display.addWidget (labelHandle, this); |
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469 if (imageHandle !is null) display.addWidget (imageHandle, this); |
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470 if (arrowHandle !is null) display.addWidget (arrowHandle, this); |
37 | 471 } |
472 | |
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473 override void releaseHandle () { |
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474 super.releaseHandle (); |
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475 boxHandle = imageHandle = labelHandle = arrowHandle = null; |
37 | 476 } |
477 | |
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478 override void releaseWidget () { |
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479 super.releaseWidget (); |
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480 if (groupHandle !is null) OS.g_object_unref (groupHandle); |
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481 groupHandle = null; |
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482 if (imageList !is null) imageList.dispose (); |
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483 imageList = null; |
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484 image = null; |
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485 text = null; |
37 | 486 } |
487 | |
488 /** | |
489 * Removes the listener from the collection of listeners who will | |
490 * be notified when the control is selected by the user. | |
491 * | |
492 * @param listener the listener which should no longer be notified | |
493 * | |
494 * @exception IllegalArgumentException <ul> | |
495 * <li>ERROR_NULL_ARGUMENT - if the listener is null</li> | |
496 * </ul> | |
71 | 497 * @exception DWTException <ul> |
37 | 498 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
499 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
500 * </ul> | |
501 * | |
502 * @see SelectionListener | |
503 * @see #addSelectionListener | |
504 */ | |
505 public void removeSelectionListener (SelectionListener listener) { | |
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506 checkWidget(); |
71 | 507 if (listener is null) error (DWT.ERROR_NULL_ARGUMENT); |
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508 if (eventTable is null) return; |
71 | 509 eventTable.unhook (DWT.Selection, listener); |
510 eventTable.unhook (DWT.DefaultSelection,listener); | |
37 | 511 } |
512 | |
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513 override void resizeHandle (int width, int height) { |
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514 super.resizeHandle (width, height); |
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515 /* |
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516 * Feature in GTK, GtkCheckButton and GtkRadioButton allocate |
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517 * only the minimum size necessary for its child. This causes the child |
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518 * alignment to fail. The fix is to set the child size to the size |
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519 * of the button. |
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520 */ |
71 | 521 if ((style & (DWT.CHECK | DWT.RADIO)) !is 0) { |
59
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522 OS.gtk_widget_set_size_request (boxHandle, width, -1); |
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523 } |
37 | 524 } |
525 | |
526 void selectRadio () { | |
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527 /* |
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528 * This code is intentionally commented. When two groups |
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529 * of radio buttons with the same parent are separated by |
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530 * another control, the correct behavior should be that |
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531 * the two groups act independently. This is consistent |
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532 * with radio tool and menu items. The commented code |
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533 * implements this behavior. |
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534 */ |
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535 // int index = 0; |
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536 // Control [] children = parent._getChildren (); |
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537 // while (index < children.length && children [index] !is this) index++; |
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538 // int i = index - 1; |
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539 // while (i >= 0 && children [i].setRadioSelection (false)) --i; |
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540 // int j = index + 1; |
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541 // while (j < children.length && children [j].setRadioSelection (false)) j++; |
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542 // setSelection (true); |
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543 Control [] children = parent._getChildren (); |
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544 for (int i=0; i<children.length; i++) { |
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545 Control child = children [i]; |
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546 if (this !is child) child.setRadioSelection (false); |
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547 } |
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548 setSelection (true); |
37 | 549 } |
550 | |
551 /** | |
552 * Controls how text, images and arrows will be displayed | |
553 * in the receiver. The argument should be one of | |
554 * <code>LEFT</code>, <code>RIGHT</code> or <code>CENTER</code> | |
555 * unless the receiver is an <code>ARROW</code> button, in | |
556 * which case, the argument indicates the direction of | |
557 * the arrow (one of <code>LEFT</code>, <code>RIGHT</code>, | |
558 * <code>UP</code> or <code>DOWN</code>). | |
559 * | |
560 * @param alignment the new alignment | |
561 * | |
71 | 562 * @exception DWTException <ul> |
37 | 563 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
564 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
565 * </ul> | |
566 */ | |
567 public void setAlignment (int alignment) { | |
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568 checkWidget (); |
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569 _setAlignment (alignment); |
37 | 570 } |
571 | |
572 void _setAlignment (int alignment) { | |
71 | 573 if ((style & DWT.ARROW) !is 0) { |
574 if ((style & (DWT.UP | DWT.DOWN | DWT.LEFT | DWT.RIGHT)) is 0) return; | |
575 style &= ~(DWT.UP | DWT.DOWN | DWT.LEFT | DWT.RIGHT); | |
576 style |= alignment & (DWT.UP | DWT.DOWN | DWT.LEFT | DWT.RIGHT); | |
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577 int arrow_type = OS.GTK_ARROW_UP; |
71 | 578 bool isRTL = (style & DWT.RIGHT_TO_LEFT) !is 0; |
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579 switch (alignment) { |
71 | 580 case DWT.UP: arrow_type = OS.GTK_ARROW_UP; break; |
581 case DWT.DOWN: arrow_type = OS.GTK_ARROW_DOWN; break; | |
582 case DWT.LEFT: arrow_type = isRTL ? OS.GTK_ARROW_RIGHT : OS.GTK_ARROW_LEFT; break; | |
583 case DWT.RIGHT: arrow_type = isRTL ? OS.GTK_ARROW_LEFT : OS.GTK_ARROW_RIGHT; break; | |
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584 default: |
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585 } |
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586 OS.gtk_arrow_set (cast(GtkArrow*)arrowHandle, arrow_type, OS.GTK_SHADOW_OUT); |
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587 return; |
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588 } |
71 | 589 if ((alignment & (DWT.LEFT | DWT.RIGHT | DWT.CENTER)) is 0) return; |
590 style &= ~(DWT.LEFT | DWT.RIGHT | DWT.CENTER); | |
591 style |= alignment & (DWT.LEFT | DWT.RIGHT | DWT.CENTER); | |
59
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592 /* Alignment not honoured when image and text are visible */ |
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593 bool bothVisible = OS.GTK_WIDGET_VISIBLE (labelHandle) && OS.GTK_WIDGET_VISIBLE (imageHandle); |
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594 if (bothVisible) { |
71 | 595 if ((style & (DWT.RADIO | DWT.CHECK)) !is 0) alignment = DWT.LEFT; |
596 if ((style & (DWT.PUSH | DWT.TOGGLE)) !is 0) alignment = DWT.CENTER; | |
59
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597 } |
71 | 598 if ((alignment & DWT.LEFT) !is 0) { |
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599 if (bothVisible) { |
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600 OS.gtk_box_set_child_packing (cast(GtkBox*)boxHandle, labelHandle, false, false, 0, OS.GTK_PACK_START); |
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601 OS.gtk_box_set_child_packing (cast(GtkBox*)boxHandle, imageHandle, false, false, 0, OS.GTK_PACK_START); |
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602 } |
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603 OS.gtk_misc_set_alignment (cast(GtkMisc*)labelHandle, 0.0f, 0.5f); |
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604 OS.gtk_label_set_justify (cast(GtkLabel*)labelHandle, OS.GTK_JUSTIFY_LEFT); |
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605 OS.gtk_misc_set_alignment (cast(GtkMisc*)imageHandle, 0.0f, 0.5f); |
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606 return; |
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607 } |
71 | 608 if ((alignment & DWT.CENTER) !is 0) { |
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609 if (bothVisible) { |
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610 OS.gtk_box_set_child_packing (cast(GtkBox*)boxHandle, labelHandle, true, true, 0, OS.GTK_PACK_END); |
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611 OS.gtk_box_set_child_packing (cast(GtkBox*)boxHandle, imageHandle, true, true, 0, OS.GTK_PACK_START); |
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612 OS.gtk_misc_set_alignment (cast(GtkMisc*)labelHandle, 0f, 0.5f); |
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613 OS.gtk_misc_set_alignment (cast(GtkMisc*)imageHandle, 1f, 0.5f); |
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614 } else { |
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615 OS.gtk_misc_set_alignment (cast(GtkMisc*)labelHandle, 0.5f, 0.5f); |
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616 OS.gtk_label_set_justify (cast(GtkLabel*)labelHandle, OS.GTK_JUSTIFY_CENTER); |
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617 OS.gtk_misc_set_alignment (cast(GtkMisc*)imageHandle, 0.5f, 0.5f); |
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618 } |
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619 return; |
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620 } |
71 | 621 if ((alignment & DWT.RIGHT) !is 0) { |
59
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622 if (bothVisible) { |
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623 OS.gtk_box_set_child_packing (cast(GtkBox*)boxHandle, labelHandle, false, false, 0, OS.GTK_PACK_END); |
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624 OS.gtk_box_set_child_packing (cast(GtkBox*)boxHandle, imageHandle, false, false, 0, OS.GTK_PACK_END); |
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625 } |
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626 OS.gtk_misc_set_alignment (cast(GtkMisc*)labelHandle, 1.0f, 0.5f); |
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627 OS.gtk_label_set_justify (cast(GtkLabel*)labelHandle, OS.GTK_JUSTIFY_RIGHT); |
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628 OS.gtk_misc_set_alignment (cast(GtkMisc*)imageHandle, 1.0f, 0.5f); |
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629 return; |
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630 } |
37 | 631 } |
632 | |
44 | 633 override void setBackgroundColor (GdkColor* color) { |
59
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634 super.setBackgroundColor (color); |
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635 setBackgroundColor(fixedHandle, color); |
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636 if (labelHandle !is null) setBackgroundColor(labelHandle, color); |
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637 if (imageHandle !is null) setBackgroundColor(imageHandle, color); |
37 | 638 } |
639 | |
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640 override void setFontDescription (PangoFontDescription* font) { |
59
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641 super.setFontDescription (font); |
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642 if (labelHandle !is null) OS.gtk_widget_modify_font (labelHandle, font); |
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643 if (imageHandle !is null) OS.gtk_widget_modify_font (imageHandle, font); |
37 | 644 } |
645 | |
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646 override bool setRadioSelection (bool value) { |
71 | 647 if ((style & DWT.RADIO) is 0) return false; |
59
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648 if (getSelection () !is value) { |
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649 setSelection (value); |
71 | 650 postEvent (DWT.Selection); |
59
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651 } |
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652 return true; |
37 | 653 } |
654 | |
44 | 655 override void setForegroundColor (GdkColor* color) { |
59
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656 super.setForegroundColor (color); |
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657 setForegroundColor (fixedHandle, color); |
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658 if (labelHandle !is null) setForegroundColor (labelHandle, color); |
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659 if (imageHandle !is null) setForegroundColor (imageHandle, color); |
37 | 660 } |
661 | |
240 | 662 public void setGrayed (bool grayed) { |
663 checkWidget(); | |
664 if ((style & DWT.CHECK) is 0) return; | |
665 this.grayed = grayed; | |
666 if (grayed && OS.gtk_toggle_button_get_active (handle)) { | |
667 OS.gtk_toggle_button_set_inconsistent (handle, true); | |
668 } else { | |
669 OS.gtk_toggle_button_set_inconsistent (handle, false); | |
670 } | |
671 } | |
672 | |
37 | 673 /** |
674 * Sets the receiver's image to the argument, which may be | |
675 * <code>null</code> indicating that no image should be displayed. | |
676 * <p> | |
677 * Note that a Button can display an image and text simultaneously | |
678 * on Windows (starting with XP), GTK+ and OSX. On other platforms, | |
679 * a Button that has an image and text set into it will display the | |
680 * image or text that was set most recently. | |
681 * </p> | |
682 * @param image the image to display on the receiver (may be <code>null</code>) | |
683 * | |
684 * @exception IllegalArgumentException <ul> | |
685 * <li>ERROR_INVALID_ARGUMENT - if the image has been disposed</li> | |
686 * </ul> | |
71 | 687 * @exception DWTException <ul> |
37 | 688 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
689 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
690 * </ul> | |
691 */ | |
692 public void setImage (Image image) { | |
59
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693 checkWidget (); |
71 | 694 if ((style & DWT.ARROW) !is 0) return; |
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695 if (imageList !is null) imageList.dispose (); |
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696 imageList = null; |
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697 if (image !is null) { |
71 | 698 if (image.isDisposed()) error (DWT.ERROR_INVALID_ARGUMENT); |
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699 imageList = new ImageList (); |
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700 int imageIndex = imageList.add (image); |
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701 auto pixbuf = imageList.getPixbuf (imageIndex); |
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702 OS.gtk_image_set_from_pixbuf (cast(GtkImage*)imageHandle, pixbuf); |
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703 if (text.length is 0) OS.gtk_widget_hide (labelHandle); |
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704 OS.gtk_widget_show (imageHandle); |
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705 } else { |
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706 OS.gtk_image_set_from_pixbuf (cast(GtkImage*)imageHandle, null); |
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707 OS.gtk_widget_show (labelHandle); |
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708 OS.gtk_widget_hide (imageHandle); |
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709 } |
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710 this.image = image; |
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711 _setAlignment (style); |
37 | 712 } |
713 | |
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714 override void setOrientation () { |
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715 super.setOrientation (); |
71 | 716 if ((style & DWT.RIGHT_TO_LEFT) !is 0) { |
240 | 717 if (boxHandle !is null) OS.gtk_widget_set_direction (boxHandle, OS.GTK_TEXT_DIR_RTL); |
59
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718 if (labelHandle !is null) OS.gtk_widget_set_direction (labelHandle, OS.GTK_TEXT_DIR_RTL); |
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719 if (imageHandle !is null) OS.gtk_widget_set_direction (imageHandle, OS.GTK_TEXT_DIR_RTL); |
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720 if (arrowHandle !is null) { |
71 | 721 switch (style & (DWT.LEFT | DWT.RIGHT)) { |
722 case DWT.LEFT: OS.gtk_arrow_set (cast(GtkArrow*)arrowHandle, OS.GTK_ARROW_RIGHT, OS.GTK_SHADOW_OUT); break; | |
723 case DWT.RIGHT: OS.gtk_arrow_set (cast(GtkArrow*)arrowHandle, OS.GTK_ARROW_LEFT, OS.GTK_SHADOW_OUT); break; | |
55
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724 default: |
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725 } |
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726 } |
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727 } |
37 | 728 } |
729 | |
730 /** | |
731 * Sets the selection state of the receiver, if it is of type <code>CHECK</code>, | |
732 * <code>RADIO</code>, or <code>TOGGLE</code>. | |
733 * | |
734 * <p> | |
735 * When the receiver is of type <code>CHECK</code> or <code>RADIO</code>, | |
736 * it is selected when it is checked. When it is of type <code>TOGGLE</code>, | |
737 * it is selected when it is pushed in. | |
738 * | |
739 * @param selected the new selection state | |
740 * | |
71 | 741 * @exception DWTException <ul> |
37 | 742 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
743 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
744 * </ul> | |
745 */ | |
44 | 746 public void setSelection (bool selected) { |
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747 checkWidget(); |
71 | 748 if ((style & (DWT.CHECK | DWT.RADIO | DWT.TOGGLE)) is 0) return; |
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749 OS.g_signal_handlers_block_matched (handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, null, null, udCLICKED); |
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750 OS.gtk_toggle_button_set_active (cast(GtkToggleButton*)handle, selected); |
240 | 751 if ((style & DWT.CHECK) !is 0) { |
752 if (selected && grayed) { | |
753 OS.gtk_toggle_button_set_inconsistent (handle, true); | |
754 } else { | |
755 OS.gtk_toggle_button_set_inconsistent (handle, false); | |
756 } | |
757 } | |
71 | 758 if ((style & DWT.RADIO) !is 0) OS.gtk_toggle_button_set_active (cast(GtkToggleButton*)groupHandle, !selected); |
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759 OS.g_signal_handlers_unblock_matched (handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, null, null, udCLICKED); |
37 | 760 } |
761 | |
762 /** | |
763 * Sets the receiver's text. | |
764 * <p> | |
765 * This method sets the button label. The label may include | |
766 * the mnemonic character but must not contain line delimiters. | |
767 * </p> | |
768 * <p> | |
769 * Mnemonics are indicated by an '&' that causes the next | |
770 * character to be the mnemonic. When the user presses a | |
771 * key sequence that matches the mnemonic, a selection | |
772 * event occurs. On most platforms, the mnemonic appears | |
773 * underlined but may be emphasized in a platform specific | |
774 * manner. The mnemonic indicator character '&' can be | |
775 * escaped by doubling it in the string, causing a single | |
776 * '&' to be displayed. | |
777 * </p><p> | |
778 * Note that a Button can display an image and text simultaneously | |
779 * on Windows (starting with XP), GTK+ and OSX. On other platforms, | |
780 * a Button that has an image and text set into it will display the | |
781 * image or text that was set most recently. | |
782 * </p> | |
783 * @param string the new text | |
784 * | |
785 * @exception IllegalArgumentException <ul> | |
786 * <li>ERROR_NULL_ARGUMENT - if the text is null</li> | |
787 * </ul> | |
71 | 788 * @exception DWTException <ul> |
37 | 789 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
790 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
791 * </ul> | |
792 */ | |
238 | 793 public void setText (String string) { |
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794 checkWidget (); |
71 | 795 if (string is null) error (DWT.ERROR_NULL_ARGUMENT); |
796 if ((style & DWT.ARROW) !is 0) return; | |
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797 text = string; |
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798 char [] chars = fixMnemonic (string); |
248
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Fix call OS.gtk_label_set_text_with_mnemonic with valid ptr, even for zero length strings.
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799 OS.gtk_label_set_text_with_mnemonic (cast(GtkLabel*)labelHandle, chars.toStringzValidPtr() ); |
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800 if (image is null) OS.gtk_widget_hide (imageHandle); |
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801 OS.gtk_widget_show (labelHandle); |
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802 _setAlignment (style); |
37 | 803 } |
804 | |
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805 override void showWidget () { |
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806 super.showWidget (); |
8cec8f536af3
All D sources complete gvim retab (4 spaces), bug with Composite moveAbove/moveBelow fixed.
Frank Benoit <benoit@tionex.de>
parents:
58
diff
changeset
|
807 if (boxHandle !is null) OS.gtk_widget_show (boxHandle); |
8cec8f536af3
All D sources complete gvim retab (4 spaces), bug with Composite moveAbove/moveBelow fixed.
Frank Benoit <benoit@tionex.de>
parents:
58
diff
changeset
|
808 if (labelHandle !is null) OS.gtk_widget_show (labelHandle); |
8cec8f536af3
All D sources complete gvim retab (4 spaces), bug with Composite moveAbove/moveBelow fixed.
Frank Benoit <benoit@tionex.de>
parents:
58
diff
changeset
|
809 if (arrowHandle !is null) OS.gtk_widget_show (arrowHandle); |
37 | 810 } |
811 | |
44 | 812 override int traversalCode (int key, GdkEventKey* event) { |
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
|
813 int code = super.traversalCode (key, event); |
240 | 814 if ((style & DWT.ARROW) !is 0) code &= ~(DWT.TRAVERSE_TAB_NEXT | DWT.TRAVERSE_TAB_PREVIOUS); |
71 | 815 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
|
816 return code; |
37 | 817 } |
818 | |
819 } |