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