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