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 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), _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 Widget::Widget(EventDispatcher *event_dispatcher, Style *style,
  37                      Direction direction, Cursor cursor, int bevel_width,
  38                      bool override_redirect)
  39   : EventHandler(),
  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(override_redirect);
  52   _event_dispatcher->registerHandler(_window, this);
  53   setStyle(_style); // let the widget initialize stuff
  54 }
  55
  56 Widget::~Widget()
  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(**display, _window);
  69 }
  70
  71 void Widget::create(bool override_redirect)
  72 {
  73   const ScreenInfo *scr_info = display->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
  81   attrib_create.background_pixmap = None;
  82   attrib_create.colormap = scr_info->colormap();
  83   attrib_create.event_mask = ButtonPressMask | ButtonReleaseMask |
  84     ButtonMotionMask | ExposureMask | StructureNotifyMask;
  85
  86   if (override_redirect) {
  87     create_mask |= CWOverrideRedirect;
  88     attrib_create.override_redirect = true;
  89   }
  90
  91   if (_cursor) {
  92     create_mask |= CWCursor;
  93     attrib_create.cursor = _cursor;
  94   }
  95
  96   _window = XCreateWindow(**display, p_window, _rect.x(),
  97                           _rect.y(), _rect.width(), _rect.height(), 0,
  98                           scr_info->depth(), InputOutput,
  99                           scr_info->visual(), create_mask, &attrib_create);
 100   _ignore_config++;
 101 }
 102
 103 void Widget::setWidth(int w)
 104 {
 105   assert(w > 0);
 106   _fixed_width = true;
 107   setGeometry(_rect.x(), _rect.y(), w, _rect.height());
 108 }
 109
 110 void Widget::setHeight(int h)
 111 {
 112   assert(h > 0);
 113   _fixed_height = true;
 114   setGeometry(_rect.x(), _rect.y(), _rect.width(), h);
 115 }
 116
 117 void Widget::move(const Point &to)
 118 {
 119   move(to.x(), to.y());
 120 }
 121
 122 void Widget::move(int x, int y)
 123 {
 124   _rect.setPos(x, y);
 125   XMoveWindow(**display, _window, x, y);
 126   _ignore_config++;
 127 }
 128
 129 void Widget::resize(const Point &to)
 130 {
 131   resize(to.x(), to.y());
 132 }
 133
 134 void Widget::resize(int w, int h)
 135 {
 136   assert(w > 0 && h > 0);
 137   _fixed_width = _fixed_height = true;
 138   setGeometry(_rect.x(), _rect.y(), w, h);
 139 }
 140
 141 void Widget::setGeometry(const Rect &new_geom)
 142 {
 143   setGeometry(new_geom.x(), new_geom.y(), new_geom.width(), new_geom.height());
 144 }
 145
 146 void Widget::setGeometry(const Point &topleft, int width, int height)
 147 {
 148   setGeometry(topleft.x(), topleft.y(), width, height);
 149 }
 150
 151 void Widget::setGeometry(int x, int y, int width, int height)
 152 {
 153   _rect = Rect(x, y, width, height);
 154   _dirty = true;
 155
 156   XMoveResizeWindow(**display, _window, x, y, width, height);
 157   _ignore_config++;
 158 }
 159
 160 void Widget::show(bool recursive)
 161 {
 162   if (_visible)
 163     return;
 164
 165   // make sure the internal state isn't mangled
 166   if (_dirty)
 167     update();
 168
 169   if (recursive) {
 170     WidgetList::iterator it = _children.begin(), end = _children.end();
 171     for (; it != end; ++it)
 172       (*it)->show();
 173   }
 174
 175   XMapWindow(**display, _window);
 176   _visible = true;
 177 }
 178
 179 void Widget::hide(bool recursive)
 180 {
 181   if (! _visible)
 182     return;
 183
 184   if (recursive) {
 185     WidgetList::iterator it = _children.begin(), end = _children.end();
 186     for (; it != end; ++it)
 187       (*it)->hide();
 188   }
 189
 190   XUnmapWindow(**display, _window);
 191   _visible = false;
 192 }
 193
 194 void Widget::focus(void)
 195 {
 196   _focused = true;
 197
 198   Widget::WidgetList::iterator it = _children.begin(),
 199     end = _children.end();
 200   for (; it != end; ++it)
 201     (*it)->focus();
 202 }
 203
 204 void Widget::unfocus(void)
 205 {
 206   _focused = false;
 207
 208   Widget::WidgetList::iterator it = _children.begin(),
 209     end = _children.end();
 210   for (; it != end; ++it)
 211     (*it)->unfocus();
 212 }
 213
 214 bool Widget::grabMouse(void)
 215 {
 216   Status ret = XGrabPointer(**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 Widget::ungrabMouse(void)
 227 {
 228   if (! _grabbed_mouse)
 229     return;
 230
 231   XUngrabPointer(**display, CurrentTime);
 232   _grabbed_mouse = false;
 233 }
 234
 235 bool Widget::grabKeyboard(void)
 236 {
 237   Status ret = XGrabKeyboard(**display, _window, True,
 238                              GrabModeSync, GrabModeAsync, CurrentTime);
 239   _grabbed_keyboard = (ret == GrabSuccess);
 240   return _grabbed_keyboard;
 241
 242 }
 243
 244 void Widget::ungrabKeyboard(void)
 245 {
 246   if (! _grabbed_keyboard)
 247     return;
 248
 249   XUngrabKeyboard(**display, CurrentTime);
 250   _grabbed_keyboard = false;
 251 }
 252
 253 void Widget::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(**display, _window, _bg_pixmap);
 261     _bg_pixel = None;
 262   } else {
 263     unsigned int pix = _texture->color().pixel();
 264     if (pix != _bg_pixel) {
 265       _bg_pixel = pix;
 266       XSetWindowBackground(**display, _window, pix);
 267     }
 268   }
 269 }
 270
 271 void Widget::adjust(void)
 272 {
 273   if (_direction == Horizontal)
 274     adjustHorz();
 275   else
 276     adjustVert();
 277 }
 278
 279 void Widget::adjustHorz(void)
 280 {
 281   if (_children.size() == 0)
 282     return;
 283
 284   Widget *tmp;
 285   WidgetList::iterator it, end = _children.end();
 286
 287   int tallest = 0;
 288   int width = _bevel_width;
 289   WidgetList stretchable;
 290
 291   for (it = _children.begin(); it != end; ++it) {
 292     tmp = *it;
 293     if (tmp->isStretchableVert())
 294       tmp->setHeight(_rect.height() > _bevel_width * 2 ?
 295                      _rect.height() - _bevel_width * 2 : _bevel_width);
 296     if (tmp->isStretchableHorz())
 297       stretchable.push_back(tmp);
 298     else
 299       width += tmp->_rect.width() + _bevel_width;
 300
 301     if (tmp->_rect.height() > tallest)
 302       tallest = tmp->_rect.height();
 303   }
 304
 305   if (stretchable.size() > 0) {
 306     WidgetList::iterator str_it = stretchable.begin(),
 307       str_end = stretchable.end();
 308
 309     int str_width = _rect.width() - width / stretchable.size();
 310
 311     for (; str_it != str_end; ++str_it)
 312       (*str_it)->setWidth(str_width > _bevel_width ? str_width - _bevel_width
 313                           : _bevel_width);
 314   }
 315
 316   Widget *prev_widget = 0;
 317
 318   for (it = _children.begin(); it != end; ++it) {
 319     tmp = *it;
 320     int x, y;
 321
 322     if (prev_widget)
 323       x = prev_widget->_rect.x() + prev_widget->_rect.width() + _bevel_width;
 324     else
 325       x = _rect.x() + _bevel_width;
 326     y = (tallest - tmp->_rect.height()) / 2 + _bevel_width;
 327
 328     tmp->move(x, y);
 329
 330     prev_widget = tmp;
 331   }
 332
 333   internalResize(width, tallest + _bevel_width * 2);
 334 }
 335
 336 void Widget::adjustVert(void)
 337 {
 338   if (_children.size() == 0)
 339     return;
 340
 341   Widget *tmp;
 342   WidgetList::iterator it, end = _children.end();
 343
 344   int widest = 0;
 345   int height = _bevel_width;
 346   WidgetList stretchable;
 347
 348   for (it = _children.begin(); it != end; ++it) {
 349     tmp = *it;
 350     if (tmp->isStretchableHorz())
 351       tmp->setWidth(_rect.width() > _bevel_width * 2 ?
 352                     _rect.width() - _bevel_width * 2 : _bevel_width);
 353     if (tmp->isStretchableVert())
 354       stretchable.push_back(tmp);
 355     else
 356       height += tmp->_rect.height() + _bevel_width;
 357
 358     if (tmp->_rect.width() > widest)
 359       widest = tmp->_rect.width();
 360   }
 361
 362   if (stretchable.size() > 0) {
 363     WidgetList::iterator str_it = stretchable.begin(),
 364       str_end = stretchable.end();
 365
 366     int str_height = _rect.height() - height / stretchable.size();
 367
 368     for (; str_it != str_end; ++str_it)
 369       (*str_it)->setHeight(str_height > _bevel_width ?
 370                            str_height - _bevel_width : _bevel_width);
 371   }
 372
 373   Widget *prev_widget = 0;
 374
 375   for (it = _children.begin(); it != end; ++it) {
 376     tmp = *it;
 377     int x, y;
 378
 379     if (prev_widget)
 380       y = prev_widget->_rect.y() + prev_widget->_rect.height() + _bevel_width;
 381     else
 382       y = _rect.y() + _bevel_width;
 383     x = (widest - tmp->_rect.width()) / 2 + _bevel_width;
 384
 385     tmp->move(x, y);
 386
 387     prev_widget = tmp;
 388   }
 389
 390   internalResize(widest + _bevel_width * 2, height);
 391 }
 392
 393 void Widget::update(void)
 394 {
 395   if (_dirty) {
 396     adjust();
 397     render();
 398     XClearWindow(**display, _window);
 399   }
 400
 401   WidgetList::iterator it = _children.begin(), end = _children.end();
 402   for (; it != end; ++it)
 403     (*it)->update();
 404
 405   _dirty = false;
 406 }
 407
 408 void Widget::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 Widget::addChild(Widget *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 Widget::removeChild(Widget *child)
 430 {
 431   assert(child);
 432   WidgetList::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 Widget::setStyle(Style *style)
 443 {
 444   assert(style);
 445   _style = style;
 446   _dirty = true;
 447
 448   WidgetList::iterator it, end = _children.end();
 449   for (it = _children.begin(); it != end; ++it)
 450     (*it)->setStyle(style);
 451 }
 452
 453
 454 void Widget::setEventDispatcher(EventDispatcher *disp)
 455 {
 456   if (_event_dispatcher)
 457     _event_dispatcher->clearHandler(_window);
 458   _event_dispatcher = disp;
 459   _event_dispatcher->registerHandler(_window, this);
 460 }
 461
 462 void Widget::exposeHandler(const XExposeEvent &e)
 463 {
 464   EventHandler::exposeHandler(e);
 465   _dirty = true;
 466   update();
 467 }
 468
 469 void Widget::configureHandler(const XConfigureEvent &e)
 470 {
 471   EventHandler::configureHandler(e);
 472   if (_ignore_config) {
 473     _ignore_config--;
 474   } else {
 475     if (!(e.width == _rect.width() && e.height == _rect.height())) {
 476       _dirty = true;
 477       _rect.setSize(e.width, e.height);
 478     }
 479     update();
 480   }
 481 }
 482
 483 }