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