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