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