Dogcows Code - chaz/openbox/blob - otk/widget.cc

   1 #include "widget.hh"
   2 #include "display.hh"
   3 #include "assassin.hh"
   4 #include "screeninfo.hh"
   5
   6 #include <algorithm>
   7 #include <iostream>
   8
   9 namespace otk {
  10
  11 OtkWidget::OtkWidget(OtkWidget *parent, Direction direction)
  12   : OtkEventHandler(),
  13     _parent(parent), _style(parent->getStyle()), _direction(direction),
  14     _cursor(parent->getCursor()), _bevel_width(parent->getBevelWidth()),
  15     _ignore_config(0),
  16     _visible(false), _focused(false), _grabbed_mouse(false),
  17     _grabbed_keyboard(false), _stretchable_vert(false),
  18     _stretchable_horz(false), _texture(0), _bg_pixmap(0), _bg_pixel(0),
  19     _screen(parent->getScreen()), _fixed_width(false), _fixed_height(false),
  20     _dirty(false), _event_dispatcher(parent->getEventDispatcher())
  21 {
  22   parent->addChild(this);
  23   create();
  24   _event_dispatcher->registerHandler(_window, this);
  25 }
  26
  27 OtkWidget::OtkWidget(OtkApplication *app, Direction direction,
  28                      Cursor cursor, int bevel_width)
  29   : OtkEventHandler(),
  30     _parent(0), _style(app->getStyle()), _direction(direction), _cursor(cursor),
  31     _bevel_width(bevel_width), _ignore_config(0), _visible(false),
  32     _focused(false), _grabbed_mouse(false), _grabbed_keyboard(false),
  33     _stretchable_vert(false), _stretchable_horz(false), _texture(0),
  34     _bg_pixmap(0), _bg_pixel(0), _screen(app->getStyle()->getScreen()),
  35     _fixed_width(false), _fixed_height(false), _dirty(false),
  36     _event_dispatcher(app)
  37 {
  38   assert(app);
  39   create();
  40   _event_dispatcher->registerHandler(_window, this);
  41 }
  42
  43 OtkWidget::OtkWidget(Style *style, Direction direction,
  44                      Cursor cursor, int bevel_width)
  45   : OtkEventHandler(),
  46     _parent(0), _style(style), _direction(direction), _cursor(cursor),
  47     _bevel_width(bevel_width), _ignore_config(0), _visible(false),
  48     _focused(false), _grabbed_mouse(false), _grabbed_keyboard(false),
  49     _stretchable_vert(false), _stretchable_horz(false), _texture(0),
  50     _bg_pixmap(0), _bg_pixel(0), _screen(style->getScreen()),
  51     _fixed_width(false), _fixed_height(false), _dirty(false)
  52 {
  53   assert(style);
  54   create();
  55 }
  56
  57 OtkWidget::~OtkWidget()
  58 {
  59   if (_visible)
  60     hide();
  61
  62   std::for_each(_children.begin(), _children.end(), PointerAssassin());
  63
  64   if (_parent)
  65     _parent->removeChild(this);
  66
  67   XDestroyWindow(otk::OBDisplay::display, _window);
  68 }
  69
  70 void OtkWidget::create(void)
  71 {
  72   const ScreenInfo *scr_info = otk::OBDisplay::screenInfo(_screen);
  73   Window p_window = _parent ? _parent->getWindow() : scr_info->getRootWindow();
  74
  75   _rect.setRect(0, 0, 1, 1); // just some initial values
  76
  77   XSetWindowAttributes attrib_create;
  78   unsigned long create_mask = CWBackPixmap | CWBorderPixel | CWEventMask;
  79
  80   attrib_create.background_pixmap = None;
  81   attrib_create.colormap = scr_info->getColormap();
  82   attrib_create.event_mask = ButtonPressMask | ButtonReleaseMask |
  83     ButtonMotionMask | ExposureMask | StructureNotifyMask;
  84
  85   if (_cursor) {
  86     create_mask |= CWCursor;
  87     attrib_create.cursor = _cursor;
  88   }
  89
  90   _window = XCreateWindow(otk::OBDisplay::display, p_window, _rect.x(),
  91                           _rect.y(), _rect.width(), _rect.height(), 0,
  92                           scr_info->getDepth(), InputOutput,
  93                           scr_info->getVisual(), create_mask, &attrib_create);
  94   _ignore_config++;
  95 }
  96
  97 void OtkWidget::setWidth(int w)
  98 {
  99   assert(w > 0);
 100   _fixed_width = true;
 101   setGeometry(_rect.x(), _rect.y(), w, _rect.height());
 102 }
 103
 104 void OtkWidget::setHeight(int h)
 105 {
 106   assert(h > 0);
 107   _fixed_height = true;
 108   setGeometry(_rect.x(), _rect.y(), _rect.width(), h);
 109 }
 110
 111 void OtkWidget::move(const Point &to)
 112 {
 113   move(to.x(), to.y());
 114 }
 115
 116 void OtkWidget::move(int x, int y)
 117 {
 118   _rect.setPos(x, y);
 119   XMoveWindow(otk::OBDisplay::display, _window, x, y);
 120   _ignore_config++;
 121 }
 122
 123 void OtkWidget::resize(const Point &to)
 124 {
 125   resize(to.x(), to.y());
 126 }
 127
 128 void OtkWidget::resize(int w, int h)
 129 {
 130   assert(w > 0 && h > 0);
 131   _fixed_width = _fixed_height = true;
 132   setGeometry(_rect.x(), _rect.y(), w, h);
 133 }
 134
 135 void OtkWidget::setGeometry(const Rect &new_geom)
 136 {
 137   setGeometry(new_geom.x(), new_geom.y(), new_geom.width(), new_geom.height());
 138 }
 139
 140 void OtkWidget::setGeometry(const Point &topleft, int width, int height)
 141 {
 142   setGeometry(topleft.x(), topleft.y(), width, height);
 143 }
 144
 145 void OtkWidget::setGeometry(int x, int y, int width, int height)
 146 {
 147   _rect = Rect(x, y, width, height);
 148   _dirty = true;
 149
 150   XMoveResizeWindow(otk::OBDisplay::display, _window, x, y, width, height);
 151   _ignore_config++;
 152 }
 153
 154 void OtkWidget::show(void)
 155 {
 156   if (_visible)
 157     return;
 158
 159   // make sure the internal state isn't mangled
 160   if (_dirty)
 161     update();
 162
 163   OtkWidgetList::iterator it = _children.begin(), end = _children.end();
 164   for (; it != end; ++it)
 165     (*it)->show();
 166
 167   XMapWindow(otk::OBDisplay::display, _window);
 168   _visible = true;
 169 }
 170
 171 void OtkWidget::hide(void)
 172 {
 173   if (! _visible)
 174     return;
 175
 176   OtkWidgetList::iterator it = _children.begin(), end = _children.end();
 177   for (; it != end; ++it)
 178     (*it)->hide();
 179
 180   XUnmapWindow(otk::OBDisplay::display, _window);
 181   _visible = false;
 182 }
 183
 184 void OtkWidget::focus(void)
 185 {
 186   if (! _visible)
 187     return;
 188
 189   XSetInputFocus(otk::OBDisplay::display, _window, RevertToPointerRoot,
 190                  CurrentTime);
 191 }
 192
 193 bool OtkWidget::grabMouse(void)
 194 {
 195   Status ret = XGrabPointer(otk::OBDisplay::display, _window, True,
 196                             (ButtonPressMask | ButtonReleaseMask |
 197                              ButtonMotionMask | EnterWindowMask |
 198                              LeaveWindowMask | PointerMotionMask),
 199                             GrabModeSync, GrabModeAsync, None, None,
 200                             CurrentTime);
 201   _grabbed_mouse = (ret == GrabSuccess);
 202   return _grabbed_mouse;
 203 }
 204
 205 void OtkWidget::ungrabMouse(void)
 206 {
 207   if (! _grabbed_mouse)
 208     return;
 209
 210   XUngrabPointer(otk::OBDisplay::display, CurrentTime);
 211   _grabbed_mouse = false;
 212 }
 213
 214 bool OtkWidget::grabKeyboard(void)
 215 {
 216   Status ret = XGrabKeyboard(otk::OBDisplay::display, _window, True,
 217                              GrabModeSync, GrabModeAsync, CurrentTime);
 218   _grabbed_keyboard = (ret == GrabSuccess);
 219   return _grabbed_keyboard;
 220
 221 }
 222
 223 void OtkWidget::ungrabKeyboard(void)
 224 {
 225   if (! _grabbed_keyboard)
 226     return;
 227
 228   XUngrabKeyboard(otk::OBDisplay::display, CurrentTime);
 229   _grabbed_keyboard = false;
 230 }
 231
 232 void OtkWidget::render(void)
 233 {
 234   _bg_pixmap = _texture->render(_rect.width(), _rect.height(), _bg_pixmap);
 235
 236   if (_bg_pixmap)
 237     XSetWindowBackgroundPixmap(otk::OBDisplay::display, _window, _bg_pixmap);
 238   else {
 239     unsigned int pix = _texture->color().pixel();
 240     if (pix != _bg_pixel) {
 241       _bg_pixel = pix;
 242       XSetWindowBackground(otk::OBDisplay::display, _window, pix);
 243     }
 244   }
 245 }
 246
 247 void OtkWidget::adjust(void)
 248 {
 249   if (_direction == Horizontal)
 250     adjustHorz();
 251   else
 252     adjustVert();
 253 }
 254
 255 void OtkWidget::adjustHorz(void)
 256 {
 257   if (_children.size() == 0)
 258     return;
 259
 260   OtkWidget *tmp;
 261   OtkWidgetList::iterator it, end = _children.end();
 262
 263   int tallest = 0;
 264   int width = _bevel_width;
 265   OtkWidgetList stretchable;
 266
 267   for (it = _children.begin(); it != end; ++it) {
 268     tmp = *it;
 269     if (tmp->isStretchableVert())
 270       tmp->setHeight(_rect.height() > _bevel_width * 2 ?
 271                      _rect.height() - _bevel_width * 2 : _bevel_width);
 272     if (tmp->isStretchableHorz())
 273       stretchable.push_back(tmp);
 274     else
 275       width += tmp->_rect.width() + _bevel_width;
 276
 277     if (tmp->_rect.height() > tallest)
 278       tallest = tmp->_rect.height();
 279   }
 280
 281   if (stretchable.size() > 0) {
 282     OtkWidgetList::iterator str_it = stretchable.begin(),
 283       str_end = stretchable.end();
 284
 285     int str_width = _rect.width() - width / stretchable.size();
 286
 287     for (; str_it != str_end; ++str_it)
 288       (*str_it)->setWidth(str_width > _bevel_width ? str_width - _bevel_width
 289                           : _bevel_width);
 290   }
 291
 292   OtkWidget *prev_widget = 0;
 293
 294   for (it = _children.begin(); it != end; ++it) {
 295     tmp = *it;
 296     int x, y;
 297
 298     if (prev_widget)
 299       x = prev_widget->_rect.x() + prev_widget->_rect.width() + _bevel_width;
 300     else
 301       x = _rect.x() + _bevel_width;
 302     y = (tallest - tmp->_rect.height()) / 2 + _bevel_width;
 303
 304     tmp->move(x, y);
 305
 306     prev_widget = tmp;
 307   }
 308
 309   internalResize(width, tallest + _bevel_width * 2);
 310 }
 311
 312 void OtkWidget::adjustVert(void)
 313 {
 314   if (_children.size() == 0)
 315     return;
 316
 317   OtkWidget *tmp;
 318   OtkWidgetList::iterator it, end = _children.end();
 319
 320   int widest = 0;
 321   int height = _bevel_width;
 322   OtkWidgetList stretchable;
 323
 324   for (it = _children.begin(); it != end; ++it) {
 325     tmp = *it;
 326     if (tmp->isStretchableHorz())
 327       tmp->setWidth(_rect.width() > _bevel_width * 2 ?
 328                     _rect.width() - _bevel_width * 2 : _bevel_width);
 329     if (tmp->isStretchableVert())
 330       stretchable.push_back(tmp);
 331     else
 332       height += tmp->_rect.height() + _bevel_width;
 333
 334     if (tmp->_rect.width() > widest)
 335       widest = tmp->_rect.width();
 336   }
 337
 338   if (stretchable.size() > 0) {
 339     OtkWidgetList::iterator str_it = stretchable.begin(),
 340       str_end = stretchable.end();
 341
 342     int str_height = _rect.height() - height / stretchable.size();
 343
 344     for (; str_it != str_end; ++str_it)
 345       (*str_it)->setHeight(str_height > _bevel_width ?
 346                            str_height - _bevel_width : _bevel_width);
 347   }
 348
 349   OtkWidget *prev_widget = 0;
 350
 351   for (it = _children.begin(); it != end; ++it) {
 352     tmp = *it;
 353     int x, y;
 354
 355     if (prev_widget)
 356       y = prev_widget->_rect.y() + prev_widget->_rect.height() + _bevel_width;
 357     else
 358       y = _rect.y() + _bevel_width;
 359     x = (widest - tmp->_rect.width()) / 2 + _bevel_width;
 360
 361     tmp->move(x, y);
 362
 363     prev_widget = tmp;
 364   }
 365
 366   internalResize(widest + _bevel_width * 2, height);
 367 }
 368
 369 void OtkWidget::update(void)
 370 {
 371   if (_dirty) {
 372     adjust();
 373     render();
 374     XClearWindow(OBDisplay::display, _window);
 375   }
 376
 377   OtkWidgetList::iterator it = _children.begin(), end = _children.end();
 378   for (; it != end; ++it)
 379     (*it)->update();
 380
 381   _dirty = false;
 382 }
 383
 384 void OtkWidget::internalResize(int w, int h)
 385 {
 386   assert(w > 0 && h > 0);
 387
 388   if (! _fixed_width && ! _fixed_height)
 389     resize(w, h);
 390   else if (! _fixed_width)
 391     resize(w, _rect.height());
 392   else if (! _fixed_height)
 393     resize(_rect.width(), h);
 394 }
 395
 396 void OtkWidget::addChild(OtkWidget *child, bool front)
 397 {
 398   assert(child);
 399   if (front)
 400     _children.push_front(child);
 401   else
 402     _children.push_back(child);
 403 }
 404
 405 void OtkWidget::removeChild(OtkWidget *child)
 406 {
 407   assert(child);
 408   OtkWidgetList::iterator it, end = _children.end();
 409   for (it = _children.begin(); it != end; ++it) {
 410     if ((*it) == child)
 411       break;
 412   }
 413
 414   if (it != _children.end())
 415     _children.erase(it);
 416 }
 417
 418 void OtkWidget::setEventDispatcher(OtkEventDispatcher *disp)
 419 {
 420   if (_event_dispatcher)
 421     _event_dispatcher->clearHandler(_window);
 422   _event_dispatcher = disp;
 423   _event_dispatcher->registerHandler(_window, this);
 424 }
 425
 426 int OtkWidget::exposeHandler(const XExposeEvent &e)
 427 {
 428   OtkEventHandler::exposeHandler(e);
 429   if (e.window == _window) {
 430     _dirty = true;
 431     update();
 432     return true;
 433   }
 434   return false;
 435 }
 436
 437 int OtkWidget::configureHandler(const XConfigureEvent &e)
 438 {
 439   OtkEventHandler::configureHandler(e);
 440   if (e.window == _window) {
 441     if (_ignore_config) {
 442       _ignore_config--;
 443     } else {
 444       if (!(e.width == _rect.width() && e.height == _rect.height())) {
 445         _dirty = true;
 446         _rect.setSize(e.width, e.height);
 447       }
 448       update();
 449     }
 450     return true;
 451   }
 452
 453   return false;
 454 }
 455
 456 }