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