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 }
  36
  37 Widget::Widget(EventDispatcher *event_dispatcher, RenderStyle *style,
  38                Direction direction, Cursor cursor, int bevel_width,
  39                bool override_redirect)
  40   : EventHandler(),
  41     _dirty(false),_focused(false),
  42     _parent(0), _style(style), _direction(direction), _cursor(cursor),
  43     _bevel_width(bevel_width), _ignore_config(0), _visible(false),
  44     _grabbed_mouse(false), _grabbed_keyboard(false),
  45     _stretchable_vert(false), _stretchable_horz(false), _texture(0),
  46     _bg_pixmap(0), _bg_pixel(0), _bcolor(0), _bwidth(0), _rect(0, 0, 1, 1),
  47     _screen(style->screen()), _fixed_width(false), _fixed_height(false),
  48     _surface(0),
  49     _event_dispatcher(event_dispatcher)
  50 {
  51   assert(event_dispatcher);
  52   assert(style);
  53   create(override_redirect);
  54   _event_dispatcher->registerHandler(_window, this);
  55 }
  56
  57 Widget::~Widget()
  58 {
  59   if (_visible)
  60     hide();
  61
  62   _event_dispatcher->clearHandler(_window);
  63
  64   std::for_each(_children.begin(), _children.end(), PointerAssassin());
  65
  66   if (_parent)
  67     _parent->removeChild(this);
  68
  69   XDestroyWindow(**display, _window);
  70 }
  71
  72 void Widget::create(bool override_redirect)
  73 {
  74   const ScreenInfo *scr_info = display->screenInfo(_screen);
  75   Window p_window = _parent ? _parent->window() : scr_info->rootWindow();
  76
  77   _rect.setRect(0, 0, 1, 1); // just some initial values
  78
  79   XSetWindowAttributes attrib_create;
  80   unsigned long create_mask = CWBackPixmap | CWBorderPixel | CWEventMask;
  81
  82   attrib_create.background_pixmap = None;
  83   attrib_create.colormap = scr_info->colormap();
  84   attrib_create.event_mask = ButtonPressMask | ButtonReleaseMask |
  85     ButtonMotionMask | ExposureMask | StructureNotifyMask;
  86
  87   if (override_redirect) {
  88     create_mask |= CWOverrideRedirect;
  89     attrib_create.override_redirect = true;
  90   }
  91
  92   if (_cursor) {
  93     create_mask |= CWCursor;
  94     attrib_create.cursor = _cursor;
  95   }
  96
  97   _window = XCreateWindow(**display, p_window, _rect.x(),
  98                           _rect.y(), _rect.width(), _rect.height(), 0,
  99                           scr_info->depth(), InputOutput,
 100                           scr_info->visual(), create_mask, &attrib_create);
 101   _ignore_config++;
 102 }
 103
 104 void Widget::setWidth(int w)
 105 {
 106   assert(w > 0);
 107   _fixed_width = true;
 108   setGeometry(_rect.x(), _rect.y(), w, _rect.height());
 109 }
 110
 111 void Widget::setHeight(int h)
 112 {
 113   assert(h > 0);
 114   _fixed_height = true;
 115   setGeometry(_rect.x(), _rect.y(), _rect.width(), h);
 116 }
 117
 118 void Widget::move(const Point &to)
 119 {
 120   move(to.x(), to.y());
 121 }
 122
 123 void Widget::move(int x, int y)
 124 {
 125   _rect.setPos(x, y);
 126   XMoveWindow(**display, _window, x, y);
 127   _ignore_config++;
 128 }
 129
 130 void Widget::resize(const Point &to)
 131 {
 132   resize(to.x(), to.y());
 133 }
 134
 135 void Widget::resize(int w, int h)
 136 {
 137   assert(w > 0 && h > 0);
 138   _fixed_width = _fixed_height = true;
 139   setGeometry(_rect.x(), _rect.y(), w, h);
 140 }
 141
 142 void Widget::setGeometry(const Rect &new_geom)
 143 {
 144   setGeometry(new_geom.x(), new_geom.y(), new_geom.width(), new_geom.height());
 145 }
 146
 147 void Widget::setGeometry(const Point &topleft, int width, int height)
 148 {
 149   setGeometry(topleft.x(), topleft.y(), width, height);
 150 }
 151
 152 void Widget::setGeometry(int x, int y, int width, int height)
 153 {
 154   _rect = Rect(x, y, width, height);
 155   _dirty = true;
 156
 157   // make all parents dirty too
 158   Widget *p = _parent;
 159   while (p) {
 160     p->_dirty = true;
 161     p = p->_parent;
 162   }
 163
 164   // don't use an XMoveResizeWindow here, because it doesn't seem to move
 165   // windows with StaticGravity? This works, that didn't.
 166   XResizeWindow(**display, _window, width, height);
 167   XMoveWindow(**display, _window, x, y);
 168   _ignore_config+=2;
 169 }
 170
 171 void Widget::show(bool recursive)
 172 {
 173   if (_visible)
 174     return;
 175
 176   // make sure the internal state isn't mangled
 177   if (_dirty)
 178     update();
 179
 180   if (recursive) {
 181     WidgetList::iterator it = _children.begin(), end = _children.end();
 182     for (; it != end; ++it)
 183       (*it)->show(recursive);
 184   }
 185
 186   XMapWindow(**display, _window);
 187   _visible = true;
 188 }
 189
 190 void Widget::hide(bool recursive)
 191 {
 192   if (! _visible)
 193     return;
 194
 195   if (recursive) {
 196     WidgetList::iterator it = _children.begin(), end = _children.end();
 197     for (; it != end; ++it)
 198       (*it)->hide();
 199   }
 200
 201   XUnmapWindow(**display, _window);
 202   _visible = false;
 203 }
 204
 205 void Widget::focus(void)
 206 {
 207   _focused = true;
 208
 209   Widget::WidgetList::iterator it = _children.begin(),
 210     end = _children.end();
 211   for (; it != end; ++it)
 212     (*it)->focus();
 213 }
 214
 215 void Widget::unfocus(void)
 216 {
 217   _focused = false;
 218
 219   Widget::WidgetList::iterator it = _children.begin(),
 220     end = _children.end();
 221   for (; it != end; ++it)
 222     (*it)->unfocus();
 223 }
 224
 225 bool Widget::grabMouse(void)
 226 {
 227   Status ret = XGrabPointer(**display, _window, True,
 228                             (ButtonPressMask | ButtonReleaseMask |
 229                              ButtonMotionMask | EnterWindowMask |
 230                              LeaveWindowMask | PointerMotionMask),
 231                             GrabModeSync, GrabModeAsync, None, None,
 232                             CurrentTime);
 233   _grabbed_mouse = (ret == GrabSuccess);
 234   return _grabbed_mouse;
 235 }
 236
 237 void Widget::ungrabMouse(void)
 238 {
 239   if (! _grabbed_mouse)
 240     return;
 241
 242   XUngrabPointer(**display, CurrentTime);
 243   _grabbed_mouse = false;
 244 }
 245
 246 bool Widget::grabKeyboard(void)
 247 {
 248   Status ret = XGrabKeyboard(**display, _window, True,
 249                              GrabModeSync, GrabModeAsync, CurrentTime);
 250   _grabbed_keyboard = (ret == GrabSuccess);
 251   return _grabbed_keyboard;
 252
 253 }
 254
 255 void Widget::ungrabKeyboard(void)
 256 {
 257   if (! _grabbed_keyboard)
 258     return;
 259
 260   XUngrabKeyboard(**display, CurrentTime);
 261   _grabbed_keyboard = false;
 262 }
 263
 264 void Widget::render(void)
 265 {
 266   if (!_texture) return;
 267
 268   Surface *s = _surface; // save the current surface
 269
 270   _surface = new Surface(_screen, _rect.size());
 271   display->renderControl(_screen)->drawBackground(*_surface, *_texture);
 272
 273   renderForeground(); // for inherited types to render onto the _surface
 274
 275   XSetWindowBackgroundPixmap(**display, _window, _surface->pixmap());
 276
 277   delete s; // delete the old surface *after* its pixmap isn't in use anymore
 278 }
 279
 280 void Widget::adjust(void)
 281 {
 282   if (_direction == Horizontal)
 283     adjustHorz();
 284   else
 285     adjustVert();
 286 }
 287
 288 void Widget::adjustHorz(void)
 289 {
 290   if (_children.size() == 0)
 291     return;
 292
 293   Widget *tmp;
 294   WidgetList::iterator it, end = _children.end();
 295
 296   int tallest = 0;
 297   int width = _bevel_width;
 298   WidgetList stretchable;
 299
 300   for (it = _children.begin(); it != end; ++it) {
 301     tmp = *it;
 302     if (tmp->isStretchableVert())
 303       tmp->setHeight(_rect.height() > _bevel_width * 2 ?
 304                      _rect.height() - _bevel_width * 2 : _bevel_width);
 305     if (tmp->isStretchableHorz())
 306       stretchable.push_back(tmp);
 307     else
 308       width += tmp->_rect.width() + _bevel_width;
 309
 310     if (tmp->_rect.height() > tallest)
 311       tallest = tmp->_rect.height();
 312   }
 313
 314   if (stretchable.size() > 0) {
 315     WidgetList::iterator str_it = stretchable.begin(),
 316       str_end = stretchable.end();
 317
 318     int str_width = _rect.width() - width / stretchable.size();
 319
 320     for (; str_it != str_end; ++str_it)
 321       (*str_it)->setWidth(str_width > _bevel_width ? str_width - _bevel_width
 322                           : _bevel_width);
 323   }
 324
 325   Widget *prev_widget = 0;
 326
 327   for (it = _children.begin(); it != end; ++it) {
 328     tmp = *it;
 329     int x, y;
 330
 331     if (prev_widget)
 332       x = prev_widget->_rect.x() + prev_widget->_rect.width() + _bevel_width;
 333     else
 334       x = _bevel_width;
 335     y = (tallest - tmp->_rect.height()) / 2 + _bevel_width;
 336
 337     tmp->move(x, y);
 338
 339     prev_widget = tmp;
 340   }
 341   internalResize(width, tallest + _bevel_width * 2);
 342 }
 343
 344 void Widget::adjustVert(void)
 345 {
 346   if (_children.size() == 0)
 347     return;
 348
 349   Widget *tmp;
 350   WidgetList::iterator it, end = _children.end();
 351
 352   int widest = 0;
 353   int height = _bevel_width;
 354   WidgetList stretchable;
 355
 356   for (it = _children.begin(); it != end; ++it) {
 357     tmp = *it;
 358     if (tmp->isStretchableHorz())
 359       tmp->setWidth(_rect.width() > _bevel_width * 2 ?
 360                     _rect.width() - _bevel_width * 2 : _bevel_width);
 361     if (tmp->isStretchableVert())
 362       stretchable.push_back(tmp);
 363     else
 364       height += tmp->_rect.height() + _bevel_width;
 365
 366     if (tmp->_rect.width() > widest)
 367       widest = tmp->_rect.width();
 368   }
 369
 370   if (stretchable.size() > 0) {
 371     WidgetList::iterator str_it = stretchable.begin(),
 372       str_end = stretchable.end();
 373
 374     int str_height = _rect.height() - height / stretchable.size();
 375
 376     for (; str_it != str_end; ++str_it)
 377       (*str_it)->setHeight(str_height > _bevel_width ?
 378                            str_height - _bevel_width : _bevel_width);
 379   }
 380
 381   Widget *prev_widget = 0;
 382
 383   for (it = _children.begin(); it != end; ++it) {
 384     tmp = *it;
 385     int x, y;
 386
 387     if (prev_widget)
 388       y = prev_widget->_rect.y() + prev_widget->_rect.height() + _bevel_width;
 389     else
 390       y = _bevel_width;
 391     x = (widest - tmp->_rect.width()) / 2 + _bevel_width;
 392
 393     tmp->move(x, y);
 394
 395     prev_widget = tmp;
 396   }
 397
 398   internalResize(widest + _bevel_width * 2, height);
 399 }
 400
 401 void Widget::update()
 402 {
 403   if (_dirty) {
 404     adjust();
 405     render();
 406     XClearWindow(**display, _window);
 407   }
 408
 409   WidgetList::iterator it = _children.begin(), end = _children.end();
 410   for (; it != end; ++it)
 411     (*it)->update();
 412
 413   _dirty = false;
 414 }
 415
 416 void Widget::internalResize(int w, int h)
 417 {
 418   assert(w > 0 && h > 0);
 419
 420   bool fw = _fixed_width, fh = _fixed_height;
 421
 422   if (! fw && ! fh)
 423     resize(w, h);
 424   else if (! fw)
 425     resize(w, _rect.height());
 426   else if (! fh)
 427     resize(_rect.width(), h);
 428
 429   _fixed_width = fw;
 430   _fixed_height = fh;
 431 }
 432
 433 void Widget::addChild(Widget *child, bool front)
 434 {
 435   assert(child);
 436   if (front)
 437     _children.push_front(child);
 438   else
 439     _children.push_back(child);
 440 }
 441
 442 void Widget::removeChild(Widget *child)
 443 {
 444   assert(child);
 445   WidgetList::iterator it, end = _children.end();
 446   for (it = _children.begin(); it != end; ++it) {
 447     if ((*it) == child)
 448       break;
 449   }
 450
 451   if (it != _children.end())
 452     _children.erase(it);
 453 }
 454
 455 void Widget::setStyle(RenderStyle *style)
 456 {
 457   assert(style);
 458   _style = style;
 459   _dirty = true;
 460
 461   WidgetList::iterator it, end = _children.end();
 462   for (it = _children.begin(); it != end; ++it)
 463     (*it)->setStyle(style);
 464 }
 465
 466
 467 void Widget::setEventDispatcher(EventDispatcher *disp)
 468 {
 469   if (_event_dispatcher)
 470     _event_dispatcher->clearHandler(_window);
 471   _event_dispatcher = disp;
 472   _event_dispatcher->registerHandler(_window, this);
 473 }
 474
 475 void Widget::exposeHandler(const XExposeEvent &e)
 476 {
 477   EventHandler::exposeHandler(e);
 478 //  XClearArea(**display, _window, e.x, e.y, e.width, e.height, false);
 479 }
 480
 481 void Widget::configureHandler(const XConfigureEvent &e)
 482 {
 483   EventHandler::configureHandler(e);
 484
 485   if (_ignore_config) {
 486     _ignore_config--;
 487   } else {
 488     int width = e.width;
 489     int height = e.height;
 490
 491     XEvent ev;
 492     while (XCheckTypedWindowEvent(**display, _window, ConfigureNotify, &ev)) {
 493       width = ev.xconfigure.width;
 494       height = ev.xconfigure.height;
 495     }
 496
 497     if (!(width == _rect.width() && height == _rect.height())) {
 498       _dirty = true;
 499       _rect.setSize(width, height);
 500     }
 501     update();
 502   }
 503 }
 504
 505 }