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   // don't use an XMoveResizeWindow here, because it doesn't seem to move
 158   // windows with StaticGravity? This works, that didn't.
 159   XResizeWindow(**display, _window, width, height);
 160   XMoveWindow(**display, _window, x, y);
 161   _ignore_config+=2;
 162 }
 163
 164 void Widget::show(bool recursive)
 165 {
 166   if (_visible)
 167     return;
 168
 169   // make sure the internal state isn't mangled
 170   if (_dirty)
 171     update();
 172
 173   if (recursive) {
 174     WidgetList::iterator it = _children.begin(), end = _children.end();
 175     for (; it != end; ++it)
 176       (*it)->show(recursive);
 177   }
 178
 179   XMapWindow(**display, _window);
 180   _visible = true;
 181 }
 182
 183 void Widget::hide(bool recursive)
 184 {
 185   if (! _visible)
 186     return;
 187
 188   if (recursive) {
 189     WidgetList::iterator it = _children.begin(), end = _children.end();
 190     for (; it != end; ++it)
 191       (*it)->hide();
 192   }
 193
 194   XUnmapWindow(**display, _window);
 195   _visible = false;
 196 }
 197
 198 void Widget::focus(void)
 199 {
 200   _focused = true;
 201
 202   Widget::WidgetList::iterator it = _children.begin(),
 203     end = _children.end();
 204   for (; it != end; ++it)
 205     (*it)->focus();
 206 }
 207
 208 void Widget::unfocus(void)
 209 {
 210   _focused = false;
 211
 212   Widget::WidgetList::iterator it = _children.begin(),
 213     end = _children.end();
 214   for (; it != end; ++it)
 215     (*it)->unfocus();
 216 }
 217
 218 bool Widget::grabMouse(void)
 219 {
 220   Status ret = XGrabPointer(**display, _window, True,
 221                             (ButtonPressMask | ButtonReleaseMask |
 222                              ButtonMotionMask | EnterWindowMask |
 223                              LeaveWindowMask | PointerMotionMask),
 224                             GrabModeSync, GrabModeAsync, None, None,
 225                             CurrentTime);
 226   _grabbed_mouse = (ret == GrabSuccess);
 227   return _grabbed_mouse;
 228 }
 229
 230 void Widget::ungrabMouse(void)
 231 {
 232   if (! _grabbed_mouse)
 233     return;
 234
 235   XUngrabPointer(**display, CurrentTime);
 236   _grabbed_mouse = false;
 237 }
 238
 239 bool Widget::grabKeyboard(void)
 240 {
 241   Status ret = XGrabKeyboard(**display, _window, True,
 242                              GrabModeSync, GrabModeAsync, CurrentTime);
 243   _grabbed_keyboard = (ret == GrabSuccess);
 244   return _grabbed_keyboard;
 245
 246 }
 247
 248 void Widget::ungrabKeyboard(void)
 249 {
 250   if (! _grabbed_keyboard)
 251     return;
 252
 253   XUngrabKeyboard(**display, CurrentTime);
 254   _grabbed_keyboard = false;
 255 }
 256
 257 void Widget::render(void)
 258 {
 259   if (!_texture) return;
 260
 261   Surface *s = _surface; // save the current surface
 262
 263   _surface = new Surface(_screen, _rect.size());
 264   display->renderControl(_screen)->drawBackground(*_surface, *_texture);
 265
 266   renderForeground(); // for inherited types to render onto the _surface
 267
 268   XSetWindowBackgroundPixmap(**display, _window, _surface->pixmap());
 269
 270   delete s; // delete the old surface *after* its pixmap isn't in use anymore
 271 }
 272
 273 void Widget::adjust(void)
 274 {
 275   if (_direction == Horizontal)
 276     adjustHorz();
 277   else
 278     adjustVert();
 279 }
 280
 281 void Widget::adjustHorz(void)
 282 {
 283   if (_children.size() == 0)
 284     return;
 285
 286   Widget *tmp;
 287   WidgetList::iterator it, end = _children.end();
 288
 289   int tallest = 0;
 290   int width = _bevel_width;
 291   WidgetList stretchable;
 292
 293   for (it = _children.begin(); it != end; ++it) {
 294     tmp = *it;
 295     if (tmp->isStretchableVert())
 296       tmp->setHeight(_rect.height() > _bevel_width * 2 ?
 297                      _rect.height() - _bevel_width * 2 : _bevel_width);
 298     if (tmp->isStretchableHorz())
 299       stretchable.push_back(tmp);
 300     else
 301       width += tmp->_rect.width() + _bevel_width;
 302
 303     if (tmp->_rect.height() > tallest)
 304       tallest = tmp->_rect.height();
 305   }
 306
 307   if (stretchable.size() > 0) {
 308     WidgetList::iterator str_it = stretchable.begin(),
 309       str_end = stretchable.end();
 310
 311     int str_width = _rect.width() - width / stretchable.size();
 312
 313     for (; str_it != str_end; ++str_it)
 314       (*str_it)->setWidth(str_width > _bevel_width ? str_width - _bevel_width
 315                           : _bevel_width);
 316   }
 317
 318   Widget *prev_widget = 0;
 319
 320   for (it = _children.begin(); it != end; ++it) {
 321     tmp = *it;
 322     int x, y;
 323
 324     if (prev_widget)
 325       x = prev_widget->_rect.x() + prev_widget->_rect.width() + _bevel_width;
 326     else
 327       x = _bevel_width;
 328     y = (tallest - tmp->_rect.height()) / 2 + _bevel_width;
 329
 330     tmp->move(x, y);
 331
 332     prev_widget = tmp;
 333   }
 334
 335   internalResize(width, tallest + _bevel_width * 2);
 336 }
 337
 338 void Widget::adjustVert(void)
 339 {
 340   if (_children.size() == 0)
 341     return;
 342
 343   Widget *tmp;
 344   WidgetList::iterator it, end = _children.end();
 345
 346   int widest = 0;
 347   int height = _bevel_width;
 348   WidgetList stretchable;
 349
 350   for (it = _children.begin(); it != end; ++it) {
 351     tmp = *it;
 352     if (tmp->isStretchableHorz())
 353       tmp->setWidth(_rect.width() > _bevel_width * 2 ?
 354                     _rect.width() - _bevel_width * 2 : _bevel_width);
 355     if (tmp->isStretchableVert())
 356       stretchable.push_back(tmp);
 357     else
 358       height += tmp->_rect.height() + _bevel_width;
 359
 360     if (tmp->_rect.width() > widest)
 361       widest = tmp->_rect.width();
 362   }
 363
 364   if (stretchable.size() > 0) {
 365     WidgetList::iterator str_it = stretchable.begin(),
 366       str_end = stretchable.end();
 367
 368     int str_height = _rect.height() - height / stretchable.size();
 369
 370     for (; str_it != str_end; ++str_it)
 371       (*str_it)->setHeight(str_height > _bevel_width ?
 372                            str_height - _bevel_width : _bevel_width);
 373   }
 374
 375   Widget *prev_widget = 0;
 376
 377   for (it = _children.begin(); it != end; ++it) {
 378     tmp = *it;
 379     int x, y;
 380
 381     if (prev_widget)
 382       y = prev_widget->_rect.y() + prev_widget->_rect.height() + _bevel_width;
 383     else
 384       y = _bevel_width;
 385     x = (widest - tmp->_rect.width()) / 2 + _bevel_width;
 386
 387     tmp->move(x, y);
 388
 389     prev_widget = tmp;
 390   }
 391
 392   internalResize(widest + _bevel_width * 2, height);
 393 }
 394
 395 void Widget::update(void)
 396 {
 397   if (_dirty) {
 398     adjust();
 399     render();
 400     XClearWindow(**display, _window);
 401   }
 402
 403   WidgetList::iterator it = _children.begin(), end = _children.end();
 404   for (; it != end; ++it)
 405     (*it)->update();
 406
 407   _dirty = false;
 408 }
 409
 410 void Widget::internalResize(int w, int h)
 411 {
 412   assert(w > 0 && h > 0);
 413
 414   if (! _fixed_width && ! _fixed_height)
 415     resize(w, h);
 416   else if (! _fixed_width)
 417     resize(w, _rect.height());
 418   else if (! _fixed_height)
 419     resize(_rect.width(), h);
 420 }
 421
 422 void Widget::addChild(Widget *child, bool front)
 423 {
 424   assert(child);
 425   if (front)
 426     _children.push_front(child);
 427   else
 428     _children.push_back(child);
 429 }
 430
 431 void Widget::removeChild(Widget *child)
 432 {
 433   assert(child);
 434   WidgetList::iterator it, end = _children.end();
 435   for (it = _children.begin(); it != end; ++it) {
 436     if ((*it) == child)
 437       break;
 438   }
 439
 440   if (it != _children.end())
 441     _children.erase(it);
 442 }
 443
 444 void Widget::setStyle(RenderStyle *style)
 445 {
 446   assert(style);
 447   _style = style;
 448   _dirty = true;
 449
 450   WidgetList::iterator it, end = _children.end();
 451   for (it = _children.begin(); it != end; ++it)
 452     (*it)->setStyle(style);
 453 }
 454
 455
 456 void Widget::setEventDispatcher(EventDispatcher *disp)
 457 {
 458   if (_event_dispatcher)
 459     _event_dispatcher->clearHandler(_window);
 460   _event_dispatcher = disp;
 461   _event_dispatcher->registerHandler(_window, this);
 462 }
 463
 464 void Widget::exposeHandler(const XExposeEvent &e)
 465 {
 466   EventHandler::exposeHandler(e);
 467 //  XClearArea(**display, _window, e.x, e.y, e.width, e.height, false);
 468 }
 469
 470 void Widget::configureHandler(const XConfigureEvent &e)
 471 {
 472   EventHandler::configureHandler(e);
 473
 474   if (_ignore_config) {
 475     _ignore_config--;
 476   } else {
 477     int width = e.width;
 478     int height = e.height;
 479
 480     XEvent ev;
 481     while (XCheckTypedWindowEvent(**display, _window, ConfigureNotify, &ev)) {
 482       width = ev.xconfigure.width;
 483       height = ev.xconfigure.height;
 484     }
 485
 486     if (!(width == _rect.width() && height == _rect.height())) {
 487       _dirty = true;
 488       _rect.setSize(width, height);
 489     }
 490     update();
 491   }
 492 }
 493
 494 }