Mercurial > projects > dwt-linux
annotate dwt/widgets/Slider.d @ 322:96b14a31d9b3
Added missing dwthelper.utils imports. (catched by llvmdc)
| author | Frank Benoit <benoit@tionex.de> |
|---|---|
| date | Mon, 06 Oct 2008 21:02:12 +0200 |
| parents | c0d810de7093 |
| children |
| rev | line source |
|---|---|
| 72 | 1 /******************************************************************************* |
| 259 | 2 * Copyright (c) 2000, 2008 IBM Corporation and others. |
| 62 | 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> | |
| 62 | 12 *******************************************************************************/ |
| 13 module dwt.widgets.Slider; | |
| 14 | |
|
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15 import dwt.dwthelper.utils; |
| 62 | 16 |
| 17 import dwt.widgets.Control; | |
| 18 import dwt.widgets.Composite; | |
| 19 import dwt.widgets.TypedListener; | |
| 20 import dwt.widgets.Event; | |
| 71 | 21 import dwt.DWT; |
| 62 | 22 import dwt.internal.gtk.OS; |
| 23 import dwt.graphics.Point; | |
| 24 import dwt.events.SelectionListener; | |
| 25 | |
| 26 /** | |
| 27 * Instances of this class are selectable user interface | |
| 28 * objects that represent a range of positive, numeric values. | |
| 29 * <p> | |
| 30 * At any given moment, a given slider will have a | |
| 31 * single 'selection' that is considered to be its | |
| 32 * value, which is constrained to be within the range of | |
| 33 * values the slider represents (that is, between its | |
| 34 * <em>minimum</em> and <em>maximum</em> values). | |
| 35 * </p><p> | |
| 36 * Typically, sliders will be made up of five areas: | |
| 37 * <ol> | |
| 38 * <li>an arrow button for decrementing the value</li> | |
| 39 * <li>a page decrement area for decrementing the value by a larger amount</li> | |
| 40 * <li>a <em>thumb</em> for modifying the value by mouse dragging</li> | |
| 41 * <li>a page increment area for incrementing the value by a larger amount</li> | |
| 42 * <li>an arrow button for incrementing the value</li> | |
| 43 * </ol> | |
| 44 * Based on their style, sliders are either <code>HORIZONTAL</code> | |
| 45 * (which have a left facing button for decrementing the value and a | |
| 46 * right facing button for incrementing it) or <code>VERTICAL</code> | |
| 47 * (which have an upward facing button for decrementing the value | |
| 48 * and a downward facing buttons for incrementing it). | |
| 49 * </p><p> | |
| 50 * On some platforms, the size of the slider's thumb can be | |
| 51 * varied relative to the magnitude of the range of values it | |
| 52 * represents (that is, relative to the difference between its | |
| 53 * maximum and minimum values). Typically, this is used to | |
| 54 * indicate some proportional value such as the ratio of the | |
| 55 * visible area of a document to the total amount of space that | |
| 71 | 56 * it would take to display it. DWT supports setting the thumb |
| 62 | 57 * size even if the underlying platform does not, but in this |
| 58 * case the appearance of the slider will not change. | |
| 59 * </p> | |
| 60 * <dl> | |
| 61 * <dt><b>Styles:</b></dt> | |
| 62 * <dd>HORIZONTAL, VERTICAL</dd> | |
| 63 * <dt><b>Events:</b></dt> | |
| 64 * <dd>Selection</dd> | |
| 65 * </dl> | |
| 66 * <p> | |
| 67 * Note: Only one of the styles HORIZONTAL and VERTICAL may be specified. | |
| 68 * </p><p> | |
| 69 * IMPORTANT: This class is <em>not</em> intended to be subclassed. | |
| 70 * </p> | |
| 71 * | |
| 72 * @see ScrollBar | |
| 259 | 73 * @see <a href="http://www.eclipse.org/swt/snippets/#slider">Slider snippets</a> |
| 74 * @see <a href="http://www.eclipse.org/swt/examples.php">DWT Example: ControlExample</a> | |
| 75 * @see <a href="http://www.eclipse.org/swt/">Sample code and further information</a> | |
| 62 | 76 */ |
| 77 public class Slider : Control { | |
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78 |
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79 alias Control.computeSize computeSize; |
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80 |
| 62 | 81 int detail; |
| 82 bool dragSent; | |
| 83 /** | |
| 84 * Constructs a new instance of this class given its parent | |
| 85 * and a style value describing its behavior and appearance. | |
| 86 * <p> | |
| 87 * The style value is either one of the style constants defined in | |
| 71 | 88 * class <code>DWT</code> which is applicable to instances of this |
| 62 | 89 * class, or must be built by <em>bitwise OR</em>'ing together |
| 90 * (that is, using the <code>int</code> "|" operator) two or more | |
| 71 | 91 * of those <code>DWT</code> style constants. The class description |
| 62 | 92 * lists the style constants that are applicable to the class. |
| 93 * Style bits are also inherited from superclasses. | |
| 94 * </p> | |
| 95 * | |
| 96 * @param parent a composite control which will be the parent of the new instance (cannot be null) | |
| 97 * @param style the style of control to construct | |
| 98 * | |
| 99 * @exception IllegalArgumentException <ul> | |
| 100 * <li>ERROR_NULL_ARGUMENT - if the parent is null</li> | |
| 101 * </ul> | |
| 71 | 102 * @exception DWTException <ul> |
| 62 | 103 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the parent</li> |
| 104 * <li>ERROR_INVALID_SUBCLASS - if this class is not an allowed subclass</li> | |
| 105 * </ul> | |
| 106 * | |
| 71 | 107 * @see DWT#HORIZONTAL |
| 108 * @see DWT#VERTICAL | |
| 62 | 109 * @see Widget#checkSubclass |
| 110 * @see Widget#getStyle | |
| 111 */ | |
| 112 public this (Composite parent, int style) { | |
| 113 super (parent, checkStyle (style)); | |
| 114 } | |
| 115 | |
| 116 /** | |
| 117 * Adds the listener to the collection of listeners who will | |
| 118 * be notified when the user changes the receiver's value, by sending | |
| 119 * it one of the messages defined in the <code>SelectionListener</code> | |
| 120 * interface. | |
| 121 * <p> | |
| 122 * When <code>widgetSelected</code> is called, the event object detail field contains one of the following values: | |
| 71 | 123 * <code>DWT.NONE</code> - for the end of a drag. |
| 124 * <code>DWT.DRAG</code>. | |
| 125 * <code>DWT.HOME</code>. | |
| 126 * <code>DWT.END</code>. | |
| 127 * <code>DWT.ARROW_DOWN</code>. | |
| 128 * <code>DWT.ARROW_UP</code>. | |
| 129 * <code>DWT.PAGE_DOWN</code>. | |
| 130 * <code>DWT.PAGE_UP</code>. | |
| 62 | 131 * <code>widgetDefaultSelected</code> is not called. |
| 132 * </p> | |
| 133 * | |
| 134 * @param listener the listener which should be notified when the user changes the receiver's value | |
| 135 * | |
| 136 * @exception IllegalArgumentException <ul> | |
| 137 * <li>ERROR_NULL_ARGUMENT - if the listener is null</li> | |
| 138 * </ul> | |
| 71 | 139 * @exception DWTException <ul> |
| 62 | 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) { | |
| 149 checkWidget (); | |
| 71 | 150 if (listener is null) error (DWT.ERROR_NULL_ARGUMENT); |
| 62 | 151 TypedListener typedListener = new TypedListener (listener); |
| 71 | 152 addListener (DWT.Selection,typedListener); |
| 153 addListener (DWT.DefaultSelection,typedListener); | |
| 62 | 154 } |
| 155 | |
| 156 static int checkStyle (int style) { | |
| 71 | 157 return checkBits (style, DWT.HORIZONTAL, DWT.VERTICAL, 0, 0, 0, 0); |
| 62 | 158 } |
| 159 | |
| 160 override void createHandle (int index) { | |
| 161 state |= HANDLE; | |
| 162 fixedHandle = cast(GtkWidget*)OS.g_object_new (display.gtk_fixed_get_type (), null); | |
| 71 | 163 if (fixedHandle is null) error (DWT.ERROR_NO_HANDLES); |
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164 OS.gtk_fixed_set_has_window (fixedHandle, true); |
| 62 | 165 auto hAdjustment = OS.gtk_adjustment_new (0, 0, 100, 1, 10, 10); |
| 71 | 166 if (hAdjustment is null) error (DWT.ERROR_NO_HANDLES); |
| 167 if ((style & DWT.HORIZONTAL) !is 0) { | |
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168 handle = cast(GtkWidget*)OS.gtk_hscrollbar_new (hAdjustment); |
| 62 | 169 } else { |
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170 handle = cast(GtkWidget*)OS.gtk_vscrollbar_new (hAdjustment); |
| 62 | 171 } |
| 71 | 172 if (handle is null) error (DWT.ERROR_NO_HANDLES); |
| 240 | 173 /* |
| 174 * Bug in GTK. In GTK 2.10, the buttons on either end of | |
| 175 * a horizontal slider are created taller then the slider bar | |
| 176 * when the GTK_CAN_FOCUS flag is set. The fix is not to set | |
| 177 * the flag for horizontal bars in all versions of 2.10. Note | |
| 178 * that a bug has been logged with GTK about this issue. | |
| 179 * (http://bugzilla.gnome.org/show_bug.cgi?id=475909) | |
| 180 */ | |
| 181 if (OS.GTK_VERSION < OS.buildVERSION (2, 10, 0) || (style & DWT.VERTICAL) !is 0) { | |
| 182 OS.GTK_WIDGET_SET_FLAGS (handle, OS.GTK_CAN_FOCUS); | |
| 183 } | |
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184 OS.gtk_container_add (fixedHandle, handle); |
| 62 | 185 } |
| 186 | |
| 187 override int /*long*/ gtk_button_press_event (GtkWidget* widget, GdkEventButton* event) { | |
| 188 auto result = super.gtk_button_press_event (widget, event); | |
| 189 if (result !is 0) return result; | |
| 190 detail = OS.GTK_SCROLL_NONE; | |
| 191 dragSent = false; | |
| 192 return result; | |
| 193 } | |
| 194 | |
| 195 override int /*long*/ gtk_change_value (GtkWidget* widget, int /*long*/ scroll, int /*long*/ value1, int /*long*/ value2) { | |
| 196 detail = cast(int)/*64*/scroll; | |
| 197 return 0; | |
| 198 } | |
| 199 | |
| 200 override int /*long*/ gtk_value_changed (int /*long*/ adjustment) { | |
| 201 Event event = new Event (); | |
| 202 dragSent = detail is OS.GTK_SCROLL_JUMP; | |
| 203 switch (detail) { | |
| 71 | 204 case OS.GTK_SCROLL_NONE: event.detail = DWT.NONE; break; |
| 205 case OS.GTK_SCROLL_JUMP: event.detail = DWT.DRAG; break; | |
| 206 case OS.GTK_SCROLL_START: event.detail = DWT.HOME; break; | |
| 207 case OS.GTK_SCROLL_END: event.detail = DWT.END; break; | |
| 62 | 208 case OS.GTK_SCROLL_PAGE_DOWN: |
| 209 case OS.GTK_SCROLL_PAGE_RIGHT: | |
| 71 | 210 case OS.GTK_SCROLL_PAGE_FORWARD: event.detail = DWT.PAGE_DOWN; break; |
| 62 | 211 case OS.GTK_SCROLL_PAGE_UP: |
| 212 case OS.GTK_SCROLL_PAGE_LEFT: | |
| 71 | 213 case OS.GTK_SCROLL_PAGE_BACKWARD: event.detail = DWT.PAGE_UP; break; |
| 62 | 214 case OS.GTK_SCROLL_STEP_DOWN: |
| 215 case OS.GTK_SCROLL_STEP_RIGHT: | |
| 71 | 216 case OS.GTK_SCROLL_STEP_FORWARD: event.detail = DWT.ARROW_DOWN; break; |
| 62 | 217 case OS.GTK_SCROLL_STEP_UP: |
| 218 case OS.GTK_SCROLL_STEP_LEFT: | |
| 71 | 219 case OS.GTK_SCROLL_STEP_BACKWARD: event.detail = DWT.ARROW_UP; break; |
| 62 | 220 default: |
| 221 } | |
| 222 if (!dragSent) detail = OS.GTK_SCROLL_NONE; | |
| 71 | 223 postEvent (DWT.Selection, event); |
| 62 | 224 return 0; |
| 225 } | |
| 226 | |
| 227 override int /*long*/ gtk_event_after (GtkWidget* widget, GdkEvent* gdkEvent) { | |
| 228 switch (gdkEvent.type) { | |
| 229 case OS.GDK_BUTTON_RELEASE: { | |
| 230 GdkEventButton* gdkEventButton = cast(GdkEventButton*)gdkEvent; | |
| 71 | 231 if (gdkEventButton.button is 1 && detail is DWT.DRAG) { |
| 62 | 232 if (!dragSent) { |
| 233 Event event = new Event (); | |
| 71 | 234 event.detail = DWT.DRAG; |
| 235 postEvent (DWT.Selection, event); | |
| 62 | 236 } |
| 71 | 237 postEvent (DWT.Selection); |
| 62 | 238 } |
| 239 detail = OS.GTK_SCROLL_NONE; | |
| 240 dragSent = false; | |
| 241 break; | |
| 242 default: | |
| 243 } | |
| 244 } | |
| 245 return super.gtk_event_after (widget, gdkEvent); | |
| 246 } | |
| 247 | |
| 248 override void hookEvents () { | |
| 249 super.hookEvents (); | |
| 250 if (OS.GTK_VERSION >= OS.buildVERSION (2, 6, 0)) { | |
| 251 OS.g_signal_connect_closure (handle, OS.change_value.ptr, display.closures [CHANGE_VALUE], false); | |
| 252 } | |
| 253 OS.g_signal_connect_closure (handle, OS.value_changed.ptr, display.closures [VALUE_CHANGED], false); | |
| 254 } | |
| 255 | |
| 256 override void register () { | |
| 257 super.register (); | |
| 258 auto hAdjustment = OS.gtk_range_get_adjustment (cast(GtkRange*)handle); | |
| 259 display.addWidget (cast(GtkWidget*)hAdjustment, this); | |
| 260 } | |
| 261 | |
| 262 override void deregister () { | |
| 263 super.deregister (); | |
| 264 auto hAdjustment = OS.gtk_range_get_adjustment (cast(GtkRange*)handle); | |
| 265 display.removeWidget (cast(GtkWidget*)hAdjustment); | |
| 266 } | |
| 267 | |
| 268 override public Point computeSize (int wHint, int hHint, bool changed) { | |
| 269 checkWidget(); | |
| 71 | 270 if (wHint !is DWT.DEFAULT && wHint < 0) wHint = 0; |
| 271 if (hHint !is DWT.DEFAULT && hHint < 0) hHint = 0; | |
| 62 | 272 Point size = computeNativeSize(handle, wHint, hHint, changed); |
| 71 | 273 if ((style & DWT.HORIZONTAL) !is 0) { |
| 274 if (wHint is DWT.DEFAULT) size.x = 2 * size.x; | |
| 62 | 275 } else { |
| 71 | 276 if (hHint is DWT.DEFAULT) size.y = 2 * size.y; |
| 62 | 277 } |
| 278 return size; | |
| 279 } | |
| 280 | |
| 281 /** | |
| 282 * Returns the amount that the receiver's value will be | |
| 283 * modified by when the up/down (or right/left) arrows | |
| 284 * are pressed. | |
| 285 * | |
| 286 * @return the increment | |
| 287 * | |
| 71 | 288 * @exception DWTException <ul> |
| 62 | 289 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
| 290 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 291 * </ul> | |
| 292 */ | |
| 293 public int getIncrement () { | |
| 294 checkWidget (); | |
| 295 auto hAdjustment = OS.gtk_range_get_adjustment (cast(GtkRange*)handle); | |
| 296 return cast(int) hAdjustment.step_increment; | |
| 297 } | |
| 298 | |
| 299 /** | |
| 300 * Returns the maximum value which the receiver will allow. | |
| 301 * | |
| 302 * @return the maximum | |
| 303 * | |
| 71 | 304 * @exception DWTException <ul> |
| 62 | 305 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
| 306 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 307 * </ul> | |
| 308 */ | |
| 309 public int getMaximum () { | |
| 310 checkWidget (); | |
| 311 auto hAdjustment = OS.gtk_range_get_adjustment (cast(GtkRange*)handle); | |
| 312 return cast(int) hAdjustment.upper; | |
| 313 } | |
| 314 | |
| 315 /** | |
| 316 * Returns the minimum value which the receiver will allow. | |
| 317 * | |
| 318 * @return the minimum | |
| 319 * | |
| 71 | 320 * @exception DWTException <ul> |
| 62 | 321 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
| 322 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 323 * </ul> | |
| 324 */ | |
| 325 public int getMinimum () { | |
| 326 checkWidget (); | |
| 327 auto hAdjustment = OS.gtk_range_get_adjustment (cast(GtkRange*)handle); | |
| 328 return cast(int) hAdjustment.lower; | |
| 329 } | |
| 330 | |
| 331 /** | |
| 332 * Returns the amount that the receiver's value will be | |
| 333 * modified by when the page increment/decrement areas | |
| 334 * are selected. | |
| 335 * | |
| 336 * @return the page increment | |
| 337 * | |
| 71 | 338 * @exception DWTException <ul> |
| 62 | 339 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
| 340 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 341 * </ul> | |
| 342 */ | |
| 343 public int getPageIncrement () { | |
| 344 checkWidget (); | |
| 345 auto hAdjustment = OS.gtk_range_get_adjustment (cast(GtkRange*)handle); | |
| 346 return cast(int) hAdjustment.page_increment; | |
| 347 } | |
| 348 | |
| 349 /** | |
| 350 * Returns the 'selection', which is the receiver's value. | |
| 351 * | |
| 352 * @return the selection | |
| 353 * | |
| 71 | 354 * @exception DWTException <ul> |
| 62 | 355 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
| 356 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 357 * </ul> | |
| 358 */ | |
| 359 public int getSelection () { | |
| 360 checkWidget (); | |
| 361 auto hAdjustment = OS.gtk_range_get_adjustment (cast(GtkRange*)handle); | |
| 362 return cast(int) hAdjustment.value; | |
| 363 } | |
| 364 | |
| 365 /** | |
| 366 * Returns the size of the receiver's thumb relative to the | |
| 367 * difference between its maximum and minimum values. | |
| 368 * | |
| 369 * @return the thumb value | |
| 370 * | |
| 71 | 371 * @exception DWTException <ul> |
| 62 | 372 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
| 373 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 374 * </ul> | |
| 375 */ | |
| 376 public int getThumb () { | |
| 377 checkWidget (); | |
| 378 auto hAdjustment = OS.gtk_range_get_adjustment (cast(GtkRange*)handle); | |
| 379 return cast(int) hAdjustment.page_size; | |
| 380 } | |
| 381 | |
| 382 /** | |
| 383 * Removes the listener from the collection of listeners who will | |
| 384 * be notified when the user changes the receiver's value. | |
| 385 * | |
| 386 * @param listener the listener which should no longer be notified | |
| 387 * | |
| 388 * @exception IllegalArgumentException <ul> | |
| 389 * <li>ERROR_NULL_ARGUMENT - if the listener is null</li> | |
| 390 * </ul> | |
| 71 | 391 * @exception DWTException <ul> |
| 62 | 392 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
| 393 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 394 * </ul> | |
| 395 * | |
| 396 * @see SelectionListener | |
| 397 * @see #addSelectionListener | |
| 398 */ | |
| 399 public void removeSelectionListener (SelectionListener listener) { | |
| 400 checkWidget(); | |
| 71 | 401 if (listener is null) error (DWT.ERROR_NULL_ARGUMENT); |
| 62 | 402 if (eventTable is null) return; |
| 71 | 403 eventTable.unhook (DWT.Selection, listener); |
| 404 eventTable.unhook (DWT.DefaultSelection,listener); | |
| 62 | 405 } |
| 406 | |
| 407 /** | |
| 408 * Sets the amount that the receiver's value will be | |
| 409 * modified by when the up/down (or right/left) arrows | |
| 410 * are pressed to the argument, which must be at least | |
| 411 * one. | |
| 412 * | |
| 413 * @param value the new increment (must be greater than zero) | |
| 414 * | |
| 71 | 415 * @exception DWTException <ul> |
| 62 | 416 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
| 417 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 418 * </ul> | |
| 419 */ | |
| 420 public void setIncrement (int value) { | |
| 421 checkWidget (); | |
| 422 if (value < 1) return; | |
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423 OS.g_signal_handlers_block_matched (handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, null, null, udVALUE_CHANGED); |
| 62 | 424 OS.gtk_range_set_increments (cast(GtkRange*)handle, value, getPageIncrement ()); |
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425 OS.g_signal_handlers_unblock_matched (handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, null, null, udVALUE_CHANGED); |
| 62 | 426 } |
| 427 | |
| 428 /** | |
| 429 * Sets the maximum. If this value is negative or less than or | |
| 430 * equal to the minimum, the value is ignored. If necessary, first | |
| 431 * the thumb and then the selection are adjusted to fit within the | |
| 432 * new range. | |
| 433 * | |
| 434 * @param value the new maximum, which must be greater than the current minimum | |
| 435 * | |
| 71 | 436 * @exception DWTException <ul> |
| 62 | 437 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
| 438 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 439 * </ul> | |
| 440 */ | |
| 441 public void setMaximum (int value) { | |
| 442 checkWidget (); | |
| 443 auto adjustment = OS.gtk_range_get_adjustment (cast(GtkRange*)handle); | |
| 444 int minimum = cast(int) adjustment.lower; | |
| 445 if (value <= minimum) return; | |
| 446 adjustment.upper = value; | |
| 447 adjustment.page_size = Math.min (cast(int)adjustment.page_size, value - minimum); | |
| 448 adjustment.value = Math.min (cast(int)adjustment.value, cast(int)(value - adjustment.page_size)); | |
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449 OS.g_signal_handlers_block_matched (handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, null, null, udVALUE_CHANGED); |
| 62 | 450 OS.gtk_adjustment_changed (adjustment); |
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parents:
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451 OS.g_signal_handlers_unblock_matched (handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, null, null, udVALUE_CHANGED); |
| 62 | 452 } |
| 453 | |
| 454 /** | |
| 455 * Sets the minimum value. If this value is negative or greater | |
| 456 * than or equal to the maximum, the value is ignored. If necessary, | |
| 457 * first the thumb and then the selection are adjusted to fit within | |
| 458 * the new range. | |
| 459 * | |
| 460 * @param value the new minimum | |
| 461 * | |
| 71 | 462 * @exception DWTException <ul> |
| 62 | 463 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
| 464 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 465 * </ul> | |
| 466 */ | |
| 467 public void setMinimum (int value) { | |
| 468 checkWidget (); | |
| 469 if (value < 0) return; | |
| 470 auto adjustment = OS.gtk_range_get_adjustment (cast(GtkRange*)handle); | |
| 471 int maximum = cast(int) adjustment.upper; | |
| 472 if (value >= maximum) return; | |
| 473 adjustment.lower = value; | |
| 474 adjustment.page_size = Math.min (cast(int)adjustment.page_size, maximum - value); | |
| 475 adjustment.value = Math.max (cast(int)adjustment.value, value); | |
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Fixed signal blocking/unblocking:
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parents:
62
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changeset
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476 OS.g_signal_handlers_block_matched (handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, null, null, udVALUE_CHANGED); |
| 62 | 477 OS.gtk_adjustment_changed (adjustment); |
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parents:
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changeset
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478 OS.g_signal_handlers_unblock_matched (handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, null, null, udVALUE_CHANGED); |
| 62 | 479 } |
| 480 | |
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parents:
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481 override void setOrientation () { |
| 62 | 482 super.setOrientation (); |
| 71 | 483 if ((style & DWT.RIGHT_TO_LEFT) !is 0) { |
| 484 if ((style & DWT.HORIZONTAL) !is 0) { | |
| 62 | 485 OS.gtk_range_set_inverted (cast(GtkRange*)handle, true); |
| 486 } | |
| 487 } | |
| 488 } | |
| 489 | |
| 490 /** | |
| 491 * Sets the amount that the receiver's value will be | |
| 492 * modified by when the page increment/decrement areas | |
| 493 * are selected to the argument, which must be at least | |
| 494 * one. | |
| 495 * | |
| 496 * @param value the page increment (must be greater than zero) | |
| 497 * | |
| 71 | 498 * @exception DWTException <ul> |
| 62 | 499 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
| 500 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 501 * </ul> | |
| 502 */ | |
| 503 public void setPageIncrement (int value) { | |
| 504 checkWidget (); | |
| 505 if (value < 1) return; | |
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parents:
62
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changeset
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506 OS.g_signal_handlers_block_matched (handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, null, null, udVALUE_CHANGED); |
| 62 | 507 OS.gtk_range_set_increments (cast(GtkRange*)handle, getIncrement (), value); |
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parents:
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changeset
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508 OS.g_signal_handlers_unblock_matched (handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, null, null, udVALUE_CHANGED); |
| 62 | 509 } |
| 510 | |
| 511 /** | |
| 512 * Sets the 'selection', which is the receiver's | |
| 513 * value, to the argument which must be greater than or equal | |
| 514 * to zero. | |
| 515 * | |
| 516 * @param value the new selection (must be zero or greater) | |
| 517 * | |
| 71 | 518 * @exception DWTException <ul> |
| 62 | 519 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
| 520 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 521 * </ul> | |
| 522 */ | |
| 523 public void setSelection (int value) { | |
| 524 checkWidget (); | |
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Frank Benoit <benoit@tionex.de>
parents:
62
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changeset
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525 OS.g_signal_handlers_block_matched (handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, null, null, udVALUE_CHANGED); |
| 62 | 526 OS.gtk_range_set_value (cast(GtkRange*)handle, value); |
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parents:
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changeset
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527 OS.g_signal_handlers_unblock_matched (handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, null, null, udVALUE_CHANGED); |
| 62 | 528 } |
| 529 | |
| 530 /** | |
| 531 * Sets the size of the receiver's thumb relative to the | |
| 532 * difference between its maximum and minimum values. This new | |
| 533 * value will be ignored if it is less than one, and will be | |
| 534 * clamped if it exceeds the receiver's current range. | |
| 535 * | |
| 536 * @param value the new thumb value, which must be at least one and not | |
| 537 * larger than the size of the current range | |
| 538 * | |
| 71 | 539 * @exception DWTException <ul> |
| 62 | 540 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
| 541 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 542 * </ul> | |
| 543 */ | |
| 544 public void setThumb (int value) { | |
| 545 checkWidget (); | |
| 546 if (value < 1) return; | |
| 547 auto adjustment = OS.gtk_range_get_adjustment (cast(GtkRange*)handle); | |
| 548 value = cast(int) Math.min (value, cast(int)(adjustment.upper - adjustment.lower)); | |
| 549 adjustment.page_size = cast(double) value; | |
| 550 adjustment.value = Math.min (cast(int)adjustment.value, cast(int)(adjustment.upper - value)); | |
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Fixed signal blocking/unblocking:
Frank Benoit <benoit@tionex.de>
parents:
62
diff
changeset
|
551 OS.g_signal_handlers_block_matched (handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, null, null, udVALUE_CHANGED); |
| 62 | 552 OS.gtk_adjustment_changed (adjustment); |
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Fixed signal blocking/unblocking:
Frank Benoit <benoit@tionex.de>
parents:
62
diff
changeset
|
553 OS.g_signal_handlers_unblock_matched (handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, null, null, udVALUE_CHANGED); |
| 62 | 554 } |
| 555 | |
| 556 /** | |
| 557 * Sets the receiver's selection, minimum value, maximum | |
| 558 * value, thumb, increment and page increment all at once. | |
| 559 * <p> | |
| 560 * Note: This is similar to setting the values individually | |
| 561 * using the appropriate methods, but may be implemented in a | |
| 562 * more efficient fashion on some platforms. | |
| 563 * </p> | |
| 564 * | |
| 565 * @param selection the new selection value | |
| 566 * @param minimum the new minimum value | |
| 567 * @param maximum the new maximum value | |
| 568 * @param thumb the new thumb value | |
| 569 * @param increment the new increment value | |
| 570 * @param pageIncrement the new pageIncrement value | |
| 571 * | |
| 71 | 572 * @exception DWTException <ul> |
| 62 | 573 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
| 574 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 575 * </ul> | |
| 576 */ | |
| 577 public void setValues (int selection, int minimum, int maximum, int thumb, int increment, int pageIncrement) { | |
| 578 checkWidget (); | |
| 579 if (minimum < 0) return; | |
| 580 if (maximum < 0) return; | |
| 581 if (thumb < 1) return; | |
| 582 if (increment < 1) return; | |
| 583 if (pageIncrement < 1) return; | |
| 584 thumb = Math.min (thumb, maximum - minimum); | |
| 585 auto adjustment = OS.gtk_range_get_adjustment (cast(GtkRange*)handle); | |
| 586 adjustment.value = Math.min (Math.max (selection, minimum), maximum - thumb); | |
| 587 adjustment.lower = cast(double) minimum; | |
| 588 adjustment.upper = cast(double) maximum; | |
| 589 adjustment.page_size = cast(double) thumb; | |
| 590 adjustment.step_increment = cast(double) increment; | |
| 591 adjustment.page_increment = cast(double) pageIncrement; | |
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66
bb2217c09e61
Fixed signal blocking/unblocking:
Frank Benoit <benoit@tionex.de>
parents:
62
diff
changeset
|
592 OS.g_signal_handlers_block_matched (handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, null, null, udVALUE_CHANGED); |
| 62 | 593 OS.gtk_adjustment_changed (adjustment); |
| 594 OS.gtk_adjustment_value_changed (adjustment); | |
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Fixed signal blocking/unblocking:
Frank Benoit <benoit@tionex.de>
parents:
62
diff
changeset
|
595 OS.g_signal_handlers_unblock_matched (handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, null, null, udVALUE_CHANGED); |
| 62 | 596 } |
| 597 | |
| 598 } |