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     _event_mask(ButtonPressMask | ButtonReleaseMask | ButtonMotionMask |
  29                 ExposureMask | StructureNotifyMask),
  30     _surface(0),
  31     _event_dispatcher(parent->eventDispatcher())
  32 {
  33   assert(parent);
  34   parent->addChild(this);
  35   create();
  36   _event_dispatcher->registerHandler(_window, this);
  37 }
  38
  39 Widget::Widget(EventDispatcher *event_dispatcher, RenderStyle *style,
  40                Direction direction, Cursor cursor, int bevel_width,
  41                bool override_redirect)
  42   : EventHandler(),
  43     _dirty(false),_focused(false),
  44     _parent(0), _style(style), _direction(direction), _cursor(cursor),
  45     _bevel_width(bevel_width), _ignore_config(0), _visible(false),
  46     _grabbed_mouse(false), _grabbed_keyboard(false),
  47     _stretchable_vert(false), _stretchable_horz(false), _texture(0),
  48     _bg_pixmap(0), _bg_pixel(0), _bcolor(0), _bwidth(0), _rect(0, 0, 1, 1),
  49     _screen(style->screen()), _fixed_width(false), _fixed_height(false),
  50     _event_mask(ButtonPressMask | ButtonReleaseMask | ButtonMotionMask |
  51                 ExposureMask | StructureNotifyMask),
  52     _surface(0),
  53     _event_dispatcher(event_dispatcher)
  54 {
  55   assert(event_dispatcher);
  56   assert(style);
  57   create(override_redirect);
  58   _event_dispatcher->registerHandler(_window, this);
  59 }
  60
  61 Widget::~Widget()
  62 {
  63   if (_visible)
  64     hide();
  65
  66   if (_surface)
  67     delete _surface;
  68
  69   _event_dispatcher->clearHandler(_window);
  70
  71   std::for_each(_children.begin(), _children.end(), PointerAssassin());
  72
  73   if (_parent)
  74     _parent->removeChild(this);
  75
  76   XDestroyWindow(**display, _window);
  77 }
  78
  79 void Widget::create(bool override_redirect)
  80 {
  81   const ScreenInfo *scr_info = display->screenInfo(_screen);
  82   Window p_window = _parent ? _parent->window() : scr_info->rootWindow();
  83
  84   _rect.setRect(0, 0, 1, 1); // just some initial values
  85
  86   XSetWindowAttributes attrib_create;
  87   unsigned long create_mask = CWBackPixmap | CWBorderPixel | CWEventMask;
  88
  89   attrib_create.background_pixmap = None;
  90   attrib_create.colormap = scr_info->colormap();
  91   attrib_create.event_mask = _event_mask;
  92
  93   if (override_redirect) {
  94     create_mask |= CWOverrideRedirect;
  95     attrib_create.override_redirect = true;
  96   }
  97
  98   if (_cursor) {
  99     create_mask |= CWCursor;
 100     attrib_create.cursor = _cursor;
 101   }
 102
 103   _window = XCreateWindow(**display, p_window, _rect.x(),
 104                           _rect.y(), _rect.width(), _rect.height(), 0,
 105                           scr_info->depth(), InputOutput,
 106                           scr_info->visual(), create_mask, &attrib_create);
 107   _ignore_config++;
 108 }
 109
 110 void Widget::setEventMask(long e)
 111 {
 112   XSelectInput(**display, _window, e);
 113   _event_mask = e;
 114 }
 115
 116 void Widget::setWidth(int w)
 117 {
 118   assert(w > 0);
 119   _fixed_width = true;
 120   setGeometry(_rect.x(), _rect.y(), w, _rect.height());
 121 }
 122
 123 void Widget::setHeight(int h)
 124 {
 125   assert(h > 0);
 126   _fixed_height = true;
 127   setGeometry(_rect.x(), _rect.y(), _rect.width(), h);
 128 }
 129
 130 void Widget::move(const Point &to)
 131 {
 132   move(to.x(), to.y());
 133 }
 134
 135 void Widget::move(int x, int y)
 136 {
 137   _rect.setPos(x, y);
 138   XMoveWindow(**display, _window, x, y);
 139   _ignore_config++;
 140 }
 141
 142 void Widget::resize(const Point &to)
 143 {
 144   resize(to.x(), to.y());
 145 }
 146
 147 void Widget::resize(int w, int h)
 148 {
 149   assert(w > 0 && h > 0);
 150   _fixed_width = _fixed_height = true;
 151   setGeometry(_rect.x(), _rect.y(), w, h);
 152 }
 153
 154 void Widget::setGeometry(const Rect &new_geom)
 155 {
 156   setGeometry(new_geom.x(), new_geom.y(), new_geom.width(), new_geom.height());
 157 }
 158
 159 void Widget::setGeometry(const Point &topleft, int width, int height)
 160 {
 161   setGeometry(topleft.x(), topleft.y(), width, height);
 162 }
 163
 164 void Widget::setGeometry(int x, int y, int width, int height)
 165 {
 166   _rect = Rect(x, y, width, height);
 167   _dirty = true;
 168
 169   // make all parents dirty too
 170   Widget *p = _parent;
 171   while (p) {
 172     p->_dirty = true;
 173     p = p->_parent;
 174   }
 175
 176   // don't use an XMoveResizeWindow here, because it doesn't seem to move
 177   // windows with StaticGravity? This works, that didn't.
 178   XResizeWindow(**display, _window, width, height);
 179   XMoveWindow(**display, _window, x, y);
 180   _ignore_config+=2;
 181 }
 182
 183 void Widget::show(bool recursive)
 184 {
 185   if (_visible)
 186     return;
 187
 188   // make sure the internal state isn't mangled
 189   if (_dirty)
 190     update();
 191
 192   if (recursive) {
 193     WidgetList::iterator it = _children.begin(), end = _children.end();
 194     for (; it != end; ++it)
 195       (*it)->show(recursive);
 196   }
 197
 198   XMapWindow(**display, _window);
 199   _visible = true;
 200 }
 201
 202 void Widget::hide(bool recursive)
 203 {
 204   if (! _visible)
 205     return;
 206
 207   if (recursive) {
 208     WidgetList::iterator it = _children.begin(), end = _children.end();
 209     for (; it != end; ++it)
 210       (*it)->hide();
 211   }
 212
 213   XUnmapWindow(**display, _window);
 214   _visible = false;
 215 }
 216
 217 void Widget::focus(void)
 218 {
 219   _focused = true;
 220
 221   Widget::WidgetList::iterator it = _children.begin(),
 222     end = _children.end();
 223   for (; it != end; ++it)
 224     (*it)->focus();
 225 }
 226
 227 void Widget::unfocus(void)
 228 {
 229   _focused = false;
 230
 231   Widget::WidgetList::iterator it = _children.begin(),
 232     end = _children.end();
 233   for (; it != end; ++it)
 234     (*it)->unfocus();
 235 }
 236
 237 bool Widget::grabMouse(void)
 238 {
 239   Status ret = XGrabPointer(**display, _window, True,
 240                             (ButtonPressMask | ButtonReleaseMask |
 241                              ButtonMotionMask | EnterWindowMask |
 242                              LeaveWindowMask | PointerMotionMask),
 243                             GrabModeSync, GrabModeAsync, None, None,
 244                             CurrentTime);
 245   _grabbed_mouse = (ret == GrabSuccess);
 246   return _grabbed_mouse;
 247 }
 248
 249 void Widget::ungrabMouse(void)
 250 {
 251   if (! _grabbed_mouse)
 252     return;
 253
 254   XUngrabPointer(**display, CurrentTime);
 255   _grabbed_mouse = false;
 256 }
 257
 258 bool Widget::grabKeyboard(void)
 259 {
 260   Status ret = XGrabKeyboard(**display, _window, True,
 261                              GrabModeSync, GrabModeAsync, CurrentTime);
 262   _grabbed_keyboard = (ret == GrabSuccess);
 263   return _grabbed_keyboard;
 264
 265 }
 266
 267 void Widget::ungrabKeyboard(void)
 268 {
 269   if (! _grabbed_keyboard)
 270     return;
 271
 272   XUngrabKeyboard(**display, CurrentTime);
 273   _grabbed_keyboard = false;
 274 }
 275
 276 void Widget::render(void)
 277 {
 278   if (!_texture) {
 279     XSetWindowBackgroundPixmap(**display, _window, ParentRelative);
 280     return;
 281   }
 282
 283   Surface *s = _surface; // save the current surface
 284
 285   _surface = new Surface(_screen, _rect.size());
 286   display->renderControl(_screen)->drawBackground(*_surface, *_texture);
 287
 288   renderForeground(); // for inherited types to render onto the _surface
 289
 290   XSetWindowBackgroundPixmap(**display, _window, _surface->pixmap());
 291
 292   if (s)
 293     delete s; // delete the old surface *after* its pixmap isn't in use anymore
 294 }
 295
 296 void Widget::adjust(void)
 297 {
 298   if (_direction == Horizontal)
 299     adjustHorz();
 300   else
 301     adjustVert();
 302 }
 303
 304 void Widget::adjustHorz(void)
 305 {
 306   if (_children.size() == 0)
 307     return;
 308
 309   Widget *tmp;
 310   WidgetList::iterator it, end = _children.end();
 311
 312   int tallest = 0;
 313   int width = _bevel_width;
 314   WidgetList stretchable;
 315
 316   for (it = _children.begin(); it != end; ++it) {
 317     tmp = *it;
 318     if (tmp->isStretchableVert())
 319       tmp->setHeight(_rect.height() > _bevel_width * 2 ?
 320                      _rect.height() - _bevel_width * 2 : _bevel_width);
 321     if (tmp->isStretchableHorz())
 322       stretchable.push_back(tmp);
 323     else
 324       width += tmp->_rect.width() + _bevel_width;
 325
 326     if (tmp->_rect.height() > tallest)
 327       tallest = tmp->_rect.height();
 328   }
 329
 330   if (stretchable.size() > 0) {
 331     WidgetList::iterator str_it = stretchable.begin(),
 332       str_end = stretchable.end();
 333
 334     int str_width = _rect.width() - width / stretchable.size();
 335
 336     for (; str_it != str_end; ++str_it)
 337       (*str_it)->setWidth(str_width > _bevel_width ? str_width - _bevel_width
 338                           : _bevel_width);
 339   }
 340
 341   Widget *prev_widget = 0;
 342
 343   for (it = _children.begin(); it != end; ++it) {
 344     tmp = *it;
 345     int x, y;
 346
 347     if (prev_widget)
 348       x = prev_widget->_rect.x() + prev_widget->_rect.width() + _bevel_width;
 349     else
 350       x = _bevel_width;
 351     y = (tallest - tmp->_rect.height()) / 2 + _bevel_width;
 352
 353     tmp->move(x, y);
 354
 355     prev_widget = tmp;
 356   }
 357   internalResize(width, tallest + _bevel_width * 2);
 358 }
 359
 360 void Widget::adjustVert(void)
 361 {
 362   if (_children.size() == 0)
 363     return;
 364
 365   Widget *tmp;
 366   WidgetList::iterator it, end = _children.end();
 367
 368   int widest = 0;
 369   int height = _bevel_width;
 370   WidgetList stretchable;
 371
 372   for (it = _children.begin(); it != end; ++it) {
 373     tmp = *it;
 374     if (tmp->isStretchableHorz())
 375       tmp->setWidth(_rect.width() > _bevel_width * 2 ?
 376                     _rect.width() - _bevel_width * 2 : _bevel_width);
 377     if (tmp->isStretchableVert())
 378       stretchable.push_back(tmp);
 379     else
 380       height += tmp->_rect.height() + _bevel_width;
 381
 382     if (tmp->_rect.width() > widest)
 383       widest = tmp->_rect.width();
 384   }
 385
 386   if (stretchable.size() > 0) {
 387     WidgetList::iterator str_it = stretchable.begin(),
 388       str_end = stretchable.end();
 389
 390     int str_height = _rect.height() - height / stretchable.size();
 391
 392     for (; str_it != str_end; ++str_it)
 393       (*str_it)->setHeight(str_height > _bevel_width ?
 394                            str_height - _bevel_width : _bevel_width);
 395   }
 396   if (stretchable.size() > 0)
 397     height = _rect.height();
 398
 399   Widget *prev_widget = 0;
 400
 401   for (it = _children.begin(); it != end; ++it) {
 402     tmp = *it;
 403     int x, y;
 404
 405     if (prev_widget)
 406       y = prev_widget->_rect.y() + prev_widget->_rect.height() + _bevel_width;
 407     else
 408       y = _bevel_width;
 409     x = (widest - tmp->_rect.width()) / 2 + _bevel_width;
 410
 411     tmp->move(x, y);
 412
 413     prev_widget = tmp;
 414   }
 415
 416   internalResize(widest + _bevel_width * 2, height);
 417 }
 418
 419 void Widget::update()
 420 {
 421   WidgetList::iterator it = _children.begin(), end = _children.end();
 422   for (; it != end; ++it)
 423     (*it)->update();
 424
 425   if (_dirty) {
 426     adjust();
 427     render();
 428     XClearWindow(**display, _window);
 429   }
 430
 431   _dirty = false;
 432 }
 433
 434 void Widget::internalResize(int w, int h)
 435 {
 436   assert(w > 0 && h > 0);
 437
 438   bool fw = _fixed_width, fh = _fixed_height;
 439
 440   if (! fw && ! fh)
 441     resize(w, h);
 442   else if (! fw)
 443     resize(w, _rect.height());
 444   else if (! fh)
 445     resize(_rect.width(), h);
 446
 447   _fixed_width = fw;
 448   _fixed_height = fh;
 449 }
 450
 451 void Widget::addChild(Widget *child, bool front)
 452 {
 453   assert(child);
 454   if (front)
 455     _children.push_front(child);
 456   else
 457     _children.push_back(child);
 458 }
 459
 460 void Widget::removeChild(Widget *child)
 461 {
 462   assert(child);
 463   WidgetList::iterator it, end = _children.end();
 464   for (it = _children.begin(); it != end; ++it) {
 465     if ((*it) == child)
 466       break;
 467   }
 468
 469   if (it != _children.end())
 470     _children.erase(it);
 471 }
 472
 473 void Widget::setStyle(RenderStyle *style)
 474 {
 475   assert(style);
 476   _style = style;
 477   _dirty = true;
 478
 479   WidgetList::iterator it, end = _children.end();
 480   for (it = _children.begin(); it != end; ++it)
 481     (*it)->setStyle(style);
 482 }
 483
 484
 485 void Widget::setEventDispatcher(EventDispatcher *disp)
 486 {
 487   if (_event_dispatcher)
 488     _event_dispatcher->clearHandler(_window);
 489   _event_dispatcher = disp;
 490   _event_dispatcher->registerHandler(_window, this);
 491 }
 492
 493 void Widget::exposeHandler(const XExposeEvent &e)
 494 {
 495   EventHandler::exposeHandler(e);
 496 //  XClearArea(**display, _window, e.x, e.y, e.width, e.height, false);
 497 }
 498
 499 void Widget::configureHandler(const XConfigureEvent &e)
 500 {
 501   EventHandler::configureHandler(e);
 502
 503   if (_ignore_config) {
 504     _ignore_config--;
 505   } else {
 506     int width = e.width;
 507     int height = e.height;
 508
 509     XEvent ev;
 510     while (XCheckTypedWindowEvent(**display, _window, ConfigureNotify, &ev)) {
 511       width = ev.xconfigure.width;
 512       height = ev.xconfigure.height;
 513     }
 514
 515     if (!(width == _rect.width() && height == _rect.height())) {
 516       _dirty = true;
 517       _rect.setSize(width, height);
 518     }
 519     update();
 520   }
 521 }
 522
 523 }