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   XResizeWindow(**display, _window, width, height);
 157   XMoveWindow(**display, _window, x, y);
 158   _ignore_config+=2;
 159 }
 160
 161 void Widget::show(bool recursive)
 162 {
 163   if (_visible)
 164     return;
 165
 166   // make sure the internal state isn't mangled
 167   if (_dirty)
 168     update();
 169
 170   if (recursive) {
 171     WidgetList::iterator it = _children.begin(), end = _children.end();
 172     for (; it != end; ++it)
 173       (*it)->show();
 174   }
 175
 176   XMapWindow(**display, _window);
 177   _visible = true;
 178 }
 179
 180 void Widget::hide(bool recursive)
 181 {
 182   if (! _visible)
 183     return;
 184
 185   if (recursive) {
 186     WidgetList::iterator it = _children.begin(), end = _children.end();
 187     for (; it != end; ++it)
 188       (*it)->hide();
 189   }
 190
 191   XUnmapWindow(**display, _window);
 192   _visible = false;
 193 }
 194
 195 void Widget::focus(void)
 196 {
 197   _focused = true;
 198
 199   Widget::WidgetList::iterator it = _children.begin(),
 200     end = _children.end();
 201   for (; it != end; ++it)
 202     (*it)->focus();
 203 }
 204
 205 void Widget::unfocus(void)
 206 {
 207   _focused = false;
 208
 209   Widget::WidgetList::iterator it = _children.begin(),
 210     end = _children.end();
 211   for (; it != end; ++it)
 212     (*it)->unfocus();
 213 }
 214
 215 bool Widget::grabMouse(void)
 216 {
 217   Status ret = XGrabPointer(**display, _window, True,
 218                             (ButtonPressMask | ButtonReleaseMask |
 219                              ButtonMotionMask | EnterWindowMask |
 220                              LeaveWindowMask | PointerMotionMask),
 221                             GrabModeSync, GrabModeAsync, None, None,
 222                             CurrentTime);
 223   _grabbed_mouse = (ret == GrabSuccess);
 224   return _grabbed_mouse;
 225 }
 226
 227 void Widget::ungrabMouse(void)
 228 {
 229   if (! _grabbed_mouse)
 230     return;
 231
 232   XUngrabPointer(**display, CurrentTime);
 233   _grabbed_mouse = false;
 234 }
 235
 236 bool Widget::grabKeyboard(void)
 237 {
 238   Status ret = XGrabKeyboard(**display, _window, True,
 239                              GrabModeSync, GrabModeAsync, CurrentTime);
 240   _grabbed_keyboard = (ret == GrabSuccess);
 241   return _grabbed_keyboard;
 242
 243 }
 244
 245 void Widget::ungrabKeyboard(void)
 246 {
 247   if (! _grabbed_keyboard)
 248     return;
 249
 250   XUngrabKeyboard(**display, CurrentTime);
 251   _grabbed_keyboard = false;
 252 }
 253
 254 void Widget::render(void)
 255 {
 256   if (!_texture) return;
 257
 258   _bg_pixmap = _texture->render(_rect.width(), _rect.height(), _bg_pixmap);
 259
 260   if (_bg_pixmap) {
 261     XSetWindowBackgroundPixmap(**display, _window, _bg_pixmap);
 262     _bg_pixel = None;
 263   } else {
 264     unsigned int pix = _texture->color().pixel();
 265     if (pix != _bg_pixel) {
 266       _bg_pixel = pix;
 267       XSetWindowBackground(**display, _window, pix);
 268     }
 269   }
 270 }
 271
 272 void Widget::adjust(void)
 273 {
 274   if (_direction == Horizontal)
 275     adjustHorz();
 276   else
 277     adjustVert();
 278 }
 279
 280 void Widget::adjustHorz(void)
 281 {
 282   if (_children.size() == 0)
 283     return;
 284
 285   Widget *tmp;
 286   WidgetList::iterator it, end = _children.end();
 287
 288   int tallest = 0;
 289   int width = _bevel_width;
 290   WidgetList stretchable;
 291
 292   for (it = _children.begin(); it != end; ++it) {
 293     tmp = *it;
 294     if (tmp->isStretchableVert())
 295       tmp->setHeight(_rect.height() > _bevel_width * 2 ?
 296                      _rect.height() - _bevel_width * 2 : _bevel_width);
 297     if (tmp->isStretchableHorz())
 298       stretchable.push_back(tmp);
 299     else
 300       width += tmp->_rect.width() + _bevel_width;
 301
 302     if (tmp->_rect.height() > tallest)
 303       tallest = tmp->_rect.height();
 304   }
 305
 306   if (stretchable.size() > 0) {
 307     WidgetList::iterator str_it = stretchable.begin(),
 308       str_end = stretchable.end();
 309
 310     int str_width = _rect.width() - width / stretchable.size();
 311
 312     for (; str_it != str_end; ++str_it)
 313       (*str_it)->setWidth(str_width > _bevel_width ? str_width - _bevel_width
 314                           : _bevel_width);
 315   }
 316
 317   Widget *prev_widget = 0;
 318
 319   for (it = _children.begin(); it != end; ++it) {
 320     tmp = *it;
 321     int x, y;
 322
 323     if (prev_widget)
 324       x = prev_widget->_rect.x() + prev_widget->_rect.width() + _bevel_width;
 325     else
 326       x = _rect.x() + _bevel_width;
 327     y = (tallest - tmp->_rect.height()) / 2 + _bevel_width;
 328
 329     tmp->move(x, y);
 330
 331     prev_widget = tmp;
 332   }
 333
 334   internalResize(width, tallest + _bevel_width * 2);
 335 }
 336
 337 void Widget::adjustVert(void)
 338 {
 339   if (_children.size() == 0)
 340     return;
 341
 342   Widget *tmp;
 343   WidgetList::iterator it, end = _children.end();
 344
 345   int widest = 0;
 346   int height = _bevel_width;
 347   WidgetList stretchable;
 348
 349   for (it = _children.begin(); it != end; ++it) {
 350     tmp = *it;
 351     if (tmp->isStretchableHorz())
 352       tmp->setWidth(_rect.width() > _bevel_width * 2 ?
 353                     _rect.width() - _bevel_width * 2 : _bevel_width);
 354     if (tmp->isStretchableVert())
 355       stretchable.push_back(tmp);
 356     else
 357       height += tmp->_rect.height() + _bevel_width;
 358
 359     if (tmp->_rect.width() > widest)
 360       widest = tmp->_rect.width();
 361   }
 362
 363   if (stretchable.size() > 0) {
 364     WidgetList::iterator str_it = stretchable.begin(),
 365       str_end = stretchable.end();
 366
 367     int str_height = _rect.height() - height / stretchable.size();
 368
 369     for (; str_it != str_end; ++str_it)
 370       (*str_it)->setHeight(str_height > _bevel_width ?
 371                            str_height - _bevel_width : _bevel_width);
 372   }
 373
 374   Widget *prev_widget = 0;
 375
 376   for (it = _children.begin(); it != end; ++it) {
 377     tmp = *it;
 378     int x, y;
 379
 380     if (prev_widget)
 381       y = prev_widget->_rect.y() + prev_widget->_rect.height() + _bevel_width;
 382     else
 383       y = _rect.y() + _bevel_width;
 384     x = (widest - tmp->_rect.width()) / 2 + _bevel_width;
 385
 386     tmp->move(x, y);
 387
 388     prev_widget = tmp;
 389   }
 390
 391   internalResize(widest + _bevel_width * 2, height);
 392 }
 393
 394 void Widget::update(void)
 395 {
 396   if (_dirty) {
 397     adjust();
 398     render();
 399     XClearWindow(**display, _window);
 400   }
 401
 402   WidgetList::iterator it = _children.begin(), end = _children.end();
 403   for (; it != end; ++it)
 404     (*it)->update();
 405
 406   _dirty = false;
 407 }
 408
 409 void Widget::internalResize(int w, int h)
 410 {
 411   assert(w > 0 && h > 0);
 412
 413   if (! _fixed_width && ! _fixed_height)
 414     resize(w, h);
 415   else if (! _fixed_width)
 416     resize(w, _rect.height());
 417   else if (! _fixed_height)
 418     resize(_rect.width(), h);
 419 }
 420
 421 void Widget::addChild(Widget *child, bool front)
 422 {
 423   assert(child);
 424   if (front)
 425     _children.push_front(child);
 426   else
 427     _children.push_back(child);
 428 }
 429
 430 void Widget::removeChild(Widget *child)
 431 {
 432   assert(child);
 433   WidgetList::iterator it, end = _children.end();
 434   for (it = _children.begin(); it != end; ++it) {
 435     if ((*it) == child)
 436       break;
 437   }
 438
 439   if (it != _children.end())
 440     _children.erase(it);
 441 }
 442
 443 void Widget::setStyle(Style *style)
 444 {
 445   assert(style);
 446   _style = style;
 447   _dirty = true;
 448
 449   WidgetList::iterator it, end = _children.end();
 450   for (it = _children.begin(); it != end; ++it)
 451     (*it)->setStyle(style);
 452 }
 453
 454
 455 void Widget::setEventDispatcher(EventDispatcher *disp)
 456 {
 457   if (_event_dispatcher)
 458     _event_dispatcher->clearHandler(_window);
 459   _event_dispatcher = disp;
 460   _event_dispatcher->registerHandler(_window, this);
 461 }
 462
 463 void Widget::exposeHandler(const XExposeEvent &e)
 464 {
 465   EventHandler::exposeHandler(e);
 466   _dirty = true;
 467   update();
 468 }
 469
 470 void Widget::configureHandler(const XConfigureEvent &e)
 471 {
 472   EventHandler::configureHandler(e);
 473   if (_ignore_config) {
 474     _ignore_config--;
 475   } else {
 476     if (!(e.width == _rect.width() && e.height == _rect.height())) {
 477       _dirty = true;
 478       _rect.setSize(e.width, e.height);
 479     }
 480     update();
 481   }
 482 }
 483
 484 }