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 #include "focuslabel.hh"
  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), _rect(0, 0, 1, 1), _screen(parent->screen()),
  27     _fixed_width(false), _fixed_height(false),
  28     _surface(0),
  29     _event_dispatcher(parent->eventDispatcher())
  30 {
  31   assert(parent);
  32   parent->addChild(this);
  33   create();
  34   _event_dispatcher->registerHandler(_window, this);
  35   setStyle(_style); // let the widget initialize stuff
  36 }
  37
  38 Widget::Widget(EventDispatcher *event_dispatcher, RenderStyle *style,
  39                Direction direction, Cursor cursor, int bevel_width,
  40                bool override_redirect)
  41   : EventHandler(),
  42     _dirty(false),_focused(false),
  43     _parent(0), _style(style), _direction(direction), _cursor(cursor),
  44     _bevel_width(bevel_width), _ignore_config(0), _visible(false),
  45     _grabbed_mouse(false), _grabbed_keyboard(false),
  46     _stretchable_vert(false), _stretchable_horz(false), _texture(0),
  47     _bg_pixmap(0), _bg_pixel(0), _bcolor(0), _bwidth(0), _rect(0, 0, 1, 1),
  48     _screen(style->screen()), _fixed_width(false), _fixed_height(false),
  49     _surface(0),
  50     _event_dispatcher(event_dispatcher)
  51 {
  52   assert(event_dispatcher);
  53   assert(style);
  54   create(override_redirect);
  55   _event_dispatcher->registerHandler(_window, this);
  56   setStyle(_style); // let the widget initialize stuff
  57 }
  58
  59 Widget::~Widget()
  60 {
  61   if (_visible)
  62     hide();
  63
  64   _event_dispatcher->clearHandler(_window);
  65
  66   std::for_each(_children.begin(), _children.end(), PointerAssassin());
  67
  68   if (_parent)
  69     _parent->removeChild(this);
  70
  71   XDestroyWindow(**display, _window);
  72 }
  73
  74 void Widget::create(bool override_redirect)
  75 {
  76   const ScreenInfo *scr_info = display->screenInfo(_screen);
  77   Window p_window = _parent ? _parent->window() : scr_info->rootWindow();
  78
  79   _rect.setRect(0, 0, 1, 1); // just some initial values
  80
  81   XSetWindowAttributes attrib_create;
  82   unsigned long create_mask = CWBackPixmap | CWBorderPixel | CWEventMask;
  83
  84   attrib_create.background_pixmap = None;
  85   attrib_create.colormap = scr_info->colormap();
  86   attrib_create.event_mask = ButtonPressMask | ButtonReleaseMask |
  87     ButtonMotionMask | ExposureMask | StructureNotifyMask;
  88
  89   if (override_redirect) {
  90     create_mask |= CWOverrideRedirect;
  91     attrib_create.override_redirect = true;
  92   }
  93
  94   if (_cursor) {
  95     create_mask |= CWCursor;
  96     attrib_create.cursor = _cursor;
  97   }
  98
  99   _window = XCreateWindow(**display, p_window, _rect.x(),
 100                           _rect.y(), _rect.width(), _rect.height(), 0,
 101                           scr_info->depth(), InputOutput,
 102                           scr_info->visual(), create_mask, &attrib_create);
 103   _ignore_config++;
 104 }
 105
 106 void Widget::setWidth(int w)
 107 {
 108   assert(w > 0);
 109   _fixed_width = true;
 110   setGeometry(_rect.x(), _rect.y(), w, _rect.height());
 111 }
 112
 113 void Widget::setHeight(int h)
 114 {
 115   assert(h > 0);
 116   _fixed_height = true;
 117   setGeometry(_rect.x(), _rect.y(), _rect.width(), h);
 118 }
 119
 120 void Widget::move(const Point &to)
 121 {
 122   move(to.x(), to.y());
 123 }
 124
 125 void Widget::move(int x, int y)
 126 {
 127   _rect.setPos(x, y);
 128   XMoveWindow(**display, _window, x, y);
 129   _ignore_config++;
 130 }
 131
 132 void Widget::resize(const Point &to)
 133 {
 134   resize(to.x(), to.y());
 135 }
 136
 137 void Widget::resize(int w, int h)
 138 {
 139   assert(w > 0 && h > 0);
 140   _fixed_width = _fixed_height = true;
 141   setGeometry(_rect.x(), _rect.y(), w, h);
 142 }
 143
 144 void Widget::setGeometry(const Rect &new_geom)
 145 {
 146   setGeometry(new_geom.x(), new_geom.y(), new_geom.width(), new_geom.height());
 147 }
 148
 149 void Widget::setGeometry(const Point &topleft, int width, int height)
 150 {
 151   setGeometry(topleft.x(), topleft.y(), width, height);
 152 }
 153
 154 void Widget::setGeometry(int x, int y, int width, int height)
 155 {
 156   _rect = Rect(x, y, width, height);
 157   _dirty = true;
 158
 159   // don't use an XMoveResizeWindow here, because it doesn't seem to move
 160   // windows with StaticGravity? This works, that didn't.
 161   XResizeWindow(**display, _window, width, height);
 162   XMoveWindow(**display, _window, x, y);
 163   _ignore_config+=2;
 164 }
 165
 166 void Widget::show(bool recursive)
 167 {
 168   if (_visible)
 169     return;
 170
 171   // make sure the internal state isn't mangled
 172   if (_dirty)
 173     update();
 174
 175   if (recursive) {
 176     WidgetList::iterator it = _children.begin(), end = _children.end();
 177     for (; it != end; ++it)
 178       (*it)->show(recursive);
 179   }
 180
 181   XMapWindow(**display, _window);
 182   _visible = true;
 183 }
 184
 185 void Widget::hide(bool recursive)
 186 {
 187   if (! _visible)
 188     return;
 189
 190   if (recursive) {
 191     WidgetList::iterator it = _children.begin(), end = _children.end();
 192     for (; it != end; ++it)
 193       (*it)->hide();
 194   }
 195
 196   XUnmapWindow(**display, _window);
 197   _visible = false;
 198 }
 199
 200 void Widget::focus(void)
 201 {
 202   _focused = true;
 203
 204   Widget::WidgetList::iterator it = _children.begin(),
 205     end = _children.end();
 206   for (; it != end; ++it)
 207     (*it)->focus();
 208 }
 209
 210 void Widget::unfocus(void)
 211 {
 212   _focused = false;
 213
 214   Widget::WidgetList::iterator it = _children.begin(),
 215     end = _children.end();
 216   for (; it != end; ++it)
 217     (*it)->unfocus();
 218 }
 219
 220 bool Widget::grabMouse(void)
 221 {
 222   Status ret = XGrabPointer(**display, _window, True,
 223                             (ButtonPressMask | ButtonReleaseMask |
 224                              ButtonMotionMask | EnterWindowMask |
 225                              LeaveWindowMask | PointerMotionMask),
 226                             GrabModeSync, GrabModeAsync, None, None,
 227                             CurrentTime);
 228   _grabbed_mouse = (ret == GrabSuccess);
 229   return _grabbed_mouse;
 230 }
 231
 232 void Widget::ungrabMouse(void)
 233 {
 234   if (! _grabbed_mouse)
 235     return;
 236
 237   XUngrabPointer(**display, CurrentTime);
 238   _grabbed_mouse = false;
 239 }
 240
 241 bool Widget::grabKeyboard(void)
 242 {
 243   Status ret = XGrabKeyboard(**display, _window, True,
 244                              GrabModeSync, GrabModeAsync, CurrentTime);
 245   _grabbed_keyboard = (ret == GrabSuccess);
 246   return _grabbed_keyboard;
 247
 248 }
 249
 250 void Widget::ungrabKeyboard(void)
 251 {
 252   if (! _grabbed_keyboard)
 253     return;
 254
 255   XUngrabKeyboard(**display, CurrentTime);
 256   _grabbed_keyboard = false;
 257 }
 258
 259 void Widget::render(void)
 260 {
 261   if (!_texture) return;
 262
 263   Surface *s = _surface; // save the current surface
 264
 265   _surface = new Surface(_screen, _rect.size());
 266   display->renderControl(_screen)->drawBackground(*_surface, *_texture);
 267
 268   renderForeground(); // for inherited types to render onto the _surface
 269
 270   XSetWindowBackgroundPixmap(**display, _window, _surface->pixmap());
 271
 272   delete s; // delete the old surface *after* its pixmap isn't in use anymore
 273 }
 274
 275 void Widget::adjust(void)
 276 {
 277   if (_direction == Horizontal)
 278     adjustHorz();
 279   else
 280     adjustVert();
 281 }
 282
 283 void Widget::adjustHorz(void)
 284 {
 285   if (_children.size() == 0)
 286     return;
 287
 288   Widget *tmp;
 289   WidgetList::iterator it, end = _children.end();
 290
 291   int tallest = 0;
 292   int width = _bevel_width;
 293   WidgetList stretchable;
 294
 295   for (it = _children.begin(); it != end; ++it) {
 296     tmp = *it;
 297     if (tmp->isStretchableVert())
 298       tmp->setHeight(_rect.height() > _bevel_width * 2 ?
 299                      _rect.height() - _bevel_width * 2 : _bevel_width);
 300     if (tmp->isStretchableHorz())
 301       stretchable.push_back(tmp);
 302     else
 303       width += tmp->_rect.width() + _bevel_width;
 304
 305     if (tmp->_rect.height() > tallest)
 306       tallest = tmp->_rect.height();
 307   }
 308
 309   if (stretchable.size() > 0) {
 310     WidgetList::iterator str_it = stretchable.begin(),
 311       str_end = stretchable.end();
 312
 313     int str_width = _rect.width() - width / stretchable.size();
 314
 315     for (; str_it != str_end; ++str_it)
 316       (*str_it)->setWidth(str_width > _bevel_width ? str_width - _bevel_width
 317                           : _bevel_width);
 318   }
 319
 320   Widget *prev_widget = 0;
 321
 322   for (it = _children.begin(); it != end; ++it) {
 323     tmp = *it;
 324     int x, y;
 325
 326     if (prev_widget)
 327       x = prev_widget->_rect.x() + prev_widget->_rect.width() + _bevel_width;
 328     else
 329       x = _rect.x() + _bevel_width;
 330     y = (tallest - tmp->_rect.height()) / 2 + _bevel_width;
 331
 332     tmp->move(x, y);
 333
 334     prev_widget = tmp;
 335   }
 336
 337   internalResize(width, tallest + _bevel_width * 2);
 338 }
 339
 340 void Widget::adjustVert(void)
 341 {
 342   if (_children.size() == 0)
 343     return;
 344
 345   Widget *tmp;
 346   WidgetList::iterator it, end = _children.end();
 347
 348   int widest = 0;
 349   int height = _bevel_width;
 350   WidgetList stretchable;
 351
 352   for (it = _children.begin(); it != end; ++it) {
 353     tmp = *it;
 354     if (tmp->isStretchableHorz())
 355       tmp->setWidth(_rect.width() > _bevel_width * 2 ?
 356                     _rect.width() - _bevel_width * 2 : _bevel_width);
 357     if (tmp->isStretchableVert())
 358       stretchable.push_back(tmp);
 359     else
 360       height += tmp->_rect.height() + _bevel_width;
 361
 362     if (tmp->_rect.width() > widest)
 363       widest = tmp->_rect.width();
 364   }
 365
 366   if (stretchable.size() > 0) {
 367     WidgetList::iterator str_it = stretchable.begin(),
 368       str_end = stretchable.end();
 369
 370     int str_height = _rect.height() - height / stretchable.size();
 371
 372     for (; str_it != str_end; ++str_it)
 373       (*str_it)->setHeight(str_height > _bevel_width ?
 374                            str_height - _bevel_width : _bevel_width);
 375   }
 376
 377   Widget *prev_widget = 0;
 378
 379   for (it = _children.begin(); it != end; ++it) {
 380     tmp = *it;
 381     int x, y;
 382
 383     if (prev_widget)
 384       y = prev_widget->_rect.y() + prev_widget->_rect.height() + _bevel_width;
 385     else
 386       y = _rect.y() + _bevel_width;
 387     x = (widest - tmp->_rect.width()) / 2 + _bevel_width;
 388
 389     tmp->move(x, y);
 390
 391     prev_widget = tmp;
 392   }
 393
 394   internalResize(widest + _bevel_width * 2, height);
 395 }
 396
 397 void Widget::update(void)
 398 {
 399   if (_dirty) {
 400     adjust();
 401     render();
 402     XClearWindow(**display, _window);
 403   }
 404
 405   WidgetList::iterator it = _children.begin(), end = _children.end();
 406   for (; it != end; ++it)
 407     (*it)->update();
 408
 409   _dirty = false;
 410 }
 411
 412 void Widget::internalResize(int w, int h)
 413 {
 414   assert(w > 0 && h > 0);
 415
 416   if (! _fixed_width && ! _fixed_height)
 417     resize(w, h);
 418   else if (! _fixed_width)
 419     resize(w, _rect.height());
 420   else if (! _fixed_height)
 421     resize(_rect.width(), h);
 422 }
 423
 424 void Widget::addChild(Widget *child, bool front)
 425 {
 426   assert(child);
 427   if (front)
 428     _children.push_front(child);
 429   else
 430     _children.push_back(child);
 431 }
 432
 433 void Widget::removeChild(Widget *child)
 434 {
 435   assert(child);
 436   WidgetList::iterator it, end = _children.end();
 437   for (it = _children.begin(); it != end; ++it) {
 438     if ((*it) == child)
 439       break;
 440   }
 441
 442   if (it != _children.end())
 443     _children.erase(it);
 444 }
 445
 446 void Widget::setStyle(RenderStyle *style)
 447 {
 448   assert(style);
 449   _style = style;
 450   _dirty = true;
 451
 452   WidgetList::iterator it, end = _children.end();
 453   for (it = _children.begin(); it != end; ++it)
 454     (*it)->setStyle(style);
 455 }
 456
 457
 458 void Widget::setEventDispatcher(EventDispatcher *disp)
 459 {
 460   if (_event_dispatcher)
 461     _event_dispatcher->clearHandler(_window);
 462   _event_dispatcher = disp;
 463   _event_dispatcher->registerHandler(_window, this);
 464 }
 465
 466 void Widget::exposeHandler(const XExposeEvent &e)
 467 {
 468   EventHandler::exposeHandler(e);
 469 //  XClearArea(**display, _window, e.x, e.y, e.width, e.height, false);
 470 }
 471
 472 void Widget::configureHandler(const XConfigureEvent &e)
 473 {
 474   EventHandler::configureHandler(e);
 475
 476   if (_ignore_config) {
 477     _ignore_config--;
 478   } else {
 479     int width = e.width;
 480     int height = e.height;
 481
 482     XEvent ev;
 483     while (XCheckTypedWindowEvent(**display, _window, ConfigureNotify, &ev)) {
 484       width = ev.xconfigure.width;
 485       height = ev.xconfigure.height;
 486     }
 487
 488     if (!(width == _rect.width() && height == _rect.height())) {
 489       _dirty = true;
 490       _rect.setSize(width, height);
 491     }
 492     update();
 493   }
 494 }
 495
 496 }