Dogcows Code - chaz/openbox/blob - otk/widget.cc

   1 // -*- mode: C++; indent-tabs-mode: nil; c-basic-offset: 2; -*-
   2
   3 #ifdef    HAVE_CONFIG_H
   4 #  include "../config.h"
   5 #endif // HAVE_CONFIG_H
   6
   7 #include "widget.hh"
   8 #include "display.hh"
   9 #include "assassin.hh"
  10 #include "screeninfo.hh"
  11
  12 #include <algorithm>
  13 #include <iostream>
  14
  15 namespace otk {
  16
  17 Widget::Widget(Widget *parent, Direction direction)
  18   : EventHandler(),
  19     _dirty(false), _focused(false),
  20     _parent(parent), _style(parent->style()), _direction(direction),
  21     _cursor(parent->cursor()), _bevel_width(parent->bevelWidth()),
  22     _ignore_config(0),
  23     _visible(false), _grabbed_mouse(false),
  24     _grabbed_keyboard(false), _stretchable_vert(false),
  25     _stretchable_horz(false), _texture(0), _bg_pixmap(0), _bg_pixel(0),
  26     _bcolor(0), _bwidth(0), _screen(parent->screen()), _fixed_width(false),
  27     _fixed_height(false), _event_dispatcher(parent->eventDispatcher())
  28 {
  29   assert(parent);
  30   parent->addChild(this);
  31   create();
  32   _event_dispatcher->registerHandler(_window, this);
  33   setStyle(_style); // let the widget initialize stuff
  34 }
  35
  36 Widget::Widget(EventDispatcher *event_dispatcher, Style *style,
  37                      Direction direction, Cursor cursor, int bevel_width,
  38                      bool override_redirect)
  39   : EventHandler(),
  40     _dirty(false),_focused(false),
  41     _parent(0), _style(style), _direction(direction), _cursor(cursor),
  42     _bevel_width(bevel_width), _ignore_config(0), _visible(false),
  43     _grabbed_mouse(false), _grabbed_keyboard(false),
  44     _stretchable_vert(false), _stretchable_horz(false), _texture(0),
  45     _bg_pixmap(0), _bg_pixel(0), _bcolor(0), _bwidth(0),
  46     _screen(style->getScreen()), _fixed_width(false), _fixed_height(false),
  47     _event_dispatcher(event_dispatcher)
  48 {
  49   assert(event_dispatcher);
  50   assert(style);
  51   create(override_redirect);
  52   _event_dispatcher->registerHandler(_window, this);
  53   setStyle(_style); // let the widget initialize stuff
  54 }
  55
  56 Widget::~Widget()
  57 {
  58   if (_visible)
  59     hide();
  60
  61   _event_dispatcher->clearHandler(_window);
  62
  63   std::for_each(_children.begin(), _children.end(), PointerAssassin());
  64
  65   if (_parent)
  66     _parent->removeChild(this);
  67
  68   XDestroyWindow(**display, _window);
  69 }
  70
  71 void Widget::create(bool override_redirect)
  72 {
  73   const ScreenInfo *scr_info = display->screenInfo(_screen);
  74   Window p_window = _parent ? _parent->window() : scr_info->rootWindow();
  75
  76   _rect.setRect(0, 0, 1, 1); // just some initial values
  77
  78   XSetWindowAttributes attrib_create;
  79   unsigned long create_mask = CWBackPixmap | CWBorderPixel | CWEventMask;
  80
  81   attrib_create.background_pixmap = None;
  82   attrib_create.colormap = scr_info->colormap();
  83   attrib_create.event_mask = ButtonPressMask | ButtonReleaseMask |
  84     ButtonMotionMask | ExposureMask | StructureNotifyMask;
  85
  86   if (override_redirect) {
  87     create_mask |= CWOverrideRedirect;
  88     attrib_create.override_redirect = true;
  89   }
  90
  91   if (_cursor) {
  92     create_mask |= CWCursor;
  93     attrib_create.cursor = _cursor;
  94   }
  95
  96   _window = XCreateWindow(**display, p_window, _rect.x(),
  97                           _rect.y(), _rect.width(), _rect.height(), 0,
  98                           scr_info->depth(), InputOutput,
  99                           scr_info->visual(), create_mask, &attrib_create);
 100   _ignore_config++;
 101 }
 102
 103 void Widget::setWidth(int w)
 104 {
 105   assert(w > 0);
 106   _fixed_width = true;
 107   setGeometry(_rect.x(), _rect.y(), w, _rect.height());
 108 }
 109
 110 void Widget::setHeight(int h)
 111 {
 112   assert(h > 0);
 113   _fixed_height = true;
 114   setGeometry(_rect.x(), _rect.y(), _rect.width(), h);
 115 }
 116
 117 void Widget::move(const Point &to)
 118 {
 119   move(to.x(), to.y());
 120 }
 121
 122 void Widget::move(int x, int y)
 123 {
 124   _rect.setPos(x, y);
 125   XMoveWindow(**display, _window, x, y);
 126   _ignore_config++;
 127 }
 128
 129 void Widget::resize(const Point &to)
 130 {
 131   resize(to.x(), to.y());
 132 }
 133
 134 void Widget::resize(int w, int h)
 135 {
 136   assert(w > 0 && h > 0);
 137   _fixed_width = _fixed_height = true;
 138   setGeometry(_rect.x(), _rect.y(), w, h);
 139 }
 140
 141 void Widget::setGeometry(const Rect &new_geom)
 142 {
 143   setGeometry(new_geom.x(), new_geom.y(), new_geom.width(), new_geom.height());
 144 }
 145
 146 void Widget::setGeometry(const Point &topleft, int width, int height)
 147 {
 148   setGeometry(topleft.x(), topleft.y(), width, height);
 149 }
 150
 151 void Widget::setGeometry(int x, int y, int width, int height)
 152 {
 153   _rect = Rect(x, y, width, height);
 154   _dirty = true;
 155
 156   // don't use an XMoveResizeWindow here, because it doesn't seem to move
 157   // windows with StaticGravity? This works, that didn't.
 158   XResizeWindow(**display, _window, width, height);
 159   XMoveWindow(**display, _window, x, y);
 160   _ignore_config+=2;
 161 }
 162
 163 void Widget::show(bool recursive)
 164 {
 165   if (_visible)
 166     return;
 167
 168   // make sure the internal state isn't mangled
 169   if (_dirty)
 170     update();
 171
 172   if (recursive) {
 173     WidgetList::iterator it = _children.begin(), end = _children.end();
 174     for (; it != end; ++it)
 175       (*it)->show();
 176   }
 177
 178   XMapWindow(**display, _window);
 179   _visible = true;
 180 }
 181
 182 void Widget::hide(bool recursive)
 183 {
 184   if (! _visible)
 185     return;
 186
 187   if (recursive) {
 188     WidgetList::iterator it = _children.begin(), end = _children.end();
 189     for (; it != end; ++it)
 190       (*it)->hide();
 191   }
 192
 193   XUnmapWindow(**display, _window);
 194   _visible = false;
 195 }
 196
 197 void Widget::focus(void)
 198 {
 199   _focused = true;
 200
 201   Widget::WidgetList::iterator it = _children.begin(),
 202     end = _children.end();
 203   for (; it != end; ++it)
 204     (*it)->focus();
 205 }
 206
 207 void Widget::unfocus(void)
 208 {
 209   _focused = false;
 210
 211   Widget::WidgetList::iterator it = _children.begin(),
 212     end = _children.end();
 213   for (; it != end; ++it)
 214     (*it)->unfocus();
 215 }
 216
 217 bool Widget::grabMouse(void)
 218 {
 219   Status ret = XGrabPointer(**display, _window, True,
 220                             (ButtonPressMask | ButtonReleaseMask |
 221                              ButtonMotionMask | EnterWindowMask |
 222                              LeaveWindowMask | PointerMotionMask),
 223                             GrabModeSync, GrabModeAsync, None, None,
 224                             CurrentTime);
 225   _grabbed_mouse = (ret == GrabSuccess);
 226   return _grabbed_mouse;
 227 }
 228
 229 void Widget::ungrabMouse(void)
 230 {
 231   if (! _grabbed_mouse)
 232     return;
 233
 234   XUngrabPointer(**display, CurrentTime);
 235   _grabbed_mouse = false;
 236 }
 237
 238 bool Widget::grabKeyboard(void)
 239 {
 240   Status ret = XGrabKeyboard(**display, _window, True,
 241                              GrabModeSync, GrabModeAsync, CurrentTime);
 242   _grabbed_keyboard = (ret == GrabSuccess);
 243   return _grabbed_keyboard;
 244
 245 }
 246
 247 void Widget::ungrabKeyboard(void)
 248 {
 249   if (! _grabbed_keyboard)
 250     return;
 251
 252   XUngrabKeyboard(**display, CurrentTime);
 253   _grabbed_keyboard = false;
 254 }
 255
 256 void Widget::render(void)
 257 {
 258   if (!_texture) return;
 259
 260   _bg_pixmap = _texture->render(_rect.width(), _rect.height(), _bg_pixmap);
 261
 262   if (_bg_pixmap) {
 263     XSetWindowBackgroundPixmap(**display, _window, _bg_pixmap);
 264     _bg_pixel = None;
 265   } else {
 266     unsigned int pix = _texture->color().pixel();
 267     if (pix != _bg_pixel) {
 268       _bg_pixel = pix;
 269       XSetWindowBackground(**display, _window, pix);
 270     }
 271   }
 272 }
 273
 274 void Widget::adjust(void)
 275 {
 276   if (_direction == Horizontal)
 277     adjustHorz();
 278   else
 279     adjustVert();
 280 }
 281
 282 void Widget::adjustHorz(void)
 283 {
 284   if (_children.size() == 0)
 285     return;
 286
 287   Widget *tmp;
 288   WidgetList::iterator it, end = _children.end();
 289
 290   int tallest = 0;
 291   int width = _bevel_width;
 292   WidgetList stretchable;
 293
 294   for (it = _children.begin(); it != end; ++it) {
 295     tmp = *it;
 296     if (tmp->isStretchableVert())
 297       tmp->setHeight(_rect.height() > _bevel_width * 2 ?
 298                      _rect.height() - _bevel_width * 2 : _bevel_width);
 299     if (tmp->isStretchableHorz())
 300       stretchable.push_back(tmp);
 301     else
 302       width += tmp->_rect.width() + _bevel_width;
 303
 304     if (tmp->_rect.height() > tallest)
 305       tallest = tmp->_rect.height();
 306   }
 307
 308   if (stretchable.size() > 0) {
 309     WidgetList::iterator str_it = stretchable.begin(),
 310       str_end = stretchable.end();
 311
 312     int str_width = _rect.width() - width / stretchable.size();
 313
 314     for (; str_it != str_end; ++str_it)
 315       (*str_it)->setWidth(str_width > _bevel_width ? str_width - _bevel_width
 316                           : _bevel_width);
 317   }
 318
 319   Widget *prev_widget = 0;
 320
 321   for (it = _children.begin(); it != end; ++it) {
 322     tmp = *it;
 323     int x, y;
 324
 325     if (prev_widget)
 326       x = prev_widget->_rect.x() + prev_widget->_rect.width() + _bevel_width;
 327     else
 328       x = _rect.x() + _bevel_width;
 329     y = (tallest - tmp->_rect.height()) / 2 + _bevel_width;
 330
 331     tmp->move(x, y);
 332
 333     prev_widget = tmp;
 334   }
 335
 336   internalResize(width, tallest + _bevel_width * 2);
 337 }
 338
 339 void Widget::adjustVert(void)
 340 {
 341   if (_children.size() == 0)
 342     return;
 343
 344   Widget *tmp;
 345   WidgetList::iterator it, end = _children.end();
 346
 347   int widest = 0;
 348   int height = _bevel_width;
 349   WidgetList stretchable;
 350
 351   for (it = _children.begin(); it != end; ++it) {
 352     tmp = *it;
 353     if (tmp->isStretchableHorz())
 354       tmp->setWidth(_rect.width() > _bevel_width * 2 ?
 355                     _rect.width() - _bevel_width * 2 : _bevel_width);
 356     if (tmp->isStretchableVert())
 357       stretchable.push_back(tmp);
 358     else
 359       height += tmp->_rect.height() + _bevel_width;
 360
 361     if (tmp->_rect.width() > widest)
 362       widest = tmp->_rect.width();
 363   }
 364
 365   if (stretchable.size() > 0) {
 366     WidgetList::iterator str_it = stretchable.begin(),
 367       str_end = stretchable.end();
 368
 369     int str_height = _rect.height() - height / stretchable.size();
 370
 371     for (; str_it != str_end; ++str_it)
 372       (*str_it)->setHeight(str_height > _bevel_width ?
 373                            str_height - _bevel_width : _bevel_width);
 374   }
 375
 376   Widget *prev_widget = 0;
 377
 378   for (it = _children.begin(); it != end; ++it) {
 379     tmp = *it;
 380     int x, y;
 381
 382     if (prev_widget)
 383       y = prev_widget->_rect.y() + prev_widget->_rect.height() + _bevel_width;
 384     else
 385       y = _rect.y() + _bevel_width;
 386     x = (widest - tmp->_rect.width()) / 2 + _bevel_width;
 387
 388     tmp->move(x, y);
 389
 390     prev_widget = tmp;
 391   }
 392
 393   internalResize(widest + _bevel_width * 2, height);
 394 }
 395
 396 void Widget::update(void)
 397 {
 398   if (_dirty) {
 399     adjust();
 400     render();
 401     XClearWindow(**display, _window);
 402   }
 403
 404   WidgetList::iterator it = _children.begin(), end = _children.end();
 405   for (; it != end; ++it)
 406     (*it)->update();
 407
 408   _dirty = false;
 409 }
 410
 411 void Widget::internalResize(int w, int h)
 412 {
 413   assert(w > 0 && h > 0);
 414
 415   if (! _fixed_width && ! _fixed_height)
 416     resize(w, h);
 417   else if (! _fixed_width)
 418     resize(w, _rect.height());
 419   else if (! _fixed_height)
 420     resize(_rect.width(), h);
 421 }
 422
 423 void Widget::addChild(Widget *child, bool front)
 424 {
 425   assert(child);
 426   if (front)
 427     _children.push_front(child);
 428   else
 429     _children.push_back(child);
 430 }
 431
 432 void Widget::removeChild(Widget *child)
 433 {
 434   assert(child);
 435   WidgetList::iterator it, end = _children.end();
 436   for (it = _children.begin(); it != end; ++it) {
 437     if ((*it) == child)
 438       break;
 439   }
 440
 441   if (it != _children.end())
 442     _children.erase(it);
 443 }
 444
 445 void Widget::setStyle(Style *style)
 446 {
 447   assert(style);
 448   _style = style;
 449   _dirty = true;
 450
 451   WidgetList::iterator it, end = _children.end();
 452   for (it = _children.begin(); it != end; ++it)
 453     (*it)->setStyle(style);
 454 }
 455
 456
 457 void Widget::setEventDispatcher(EventDispatcher *disp)
 458 {
 459   if (_event_dispatcher)
 460     _event_dispatcher->clearHandler(_window);
 461   _event_dispatcher = disp;
 462   _event_dispatcher->registerHandler(_window, this);
 463 }
 464
 465 void Widget::exposeHandler(const XExposeEvent &e)
 466 {
 467   EventHandler::exposeHandler(e);
 468   _dirty = true;
 469   update();
 470 }
 471
 472 void Widget::configureHandler(const XConfigureEvent &e)
 473 {
 474   EventHandler::configureHandler(e);
 475   if (_ignore_config) {
 476     _ignore_config--;
 477   } else {
 478     if (!(e.width == _rect.width() && e.height == _rect.height())) {
 479       _dirty = true;
 480       _rect.setSize(e.width, e.height);
 481     }
 482     update();
 483   }
 484 }
 485
 486 }