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