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   : Surface(parent->screen()),
  19     EventHandler(),
  20     _dirty(false), _focused(false),
  21     _parent(parent), _style(parent->style()), _direction(direction),
  22     _cursor(parent->cursor()), _bevel_width(parent->bevelWidth()),
  23     _ignore_config(0),
  24     _visible(false), _grabbed_mouse(false),
  25     _grabbed_keyboard(false), _stretchable_vert(false),
  26     _stretchable_horz(false), _texture(0), _bg_pixmap(0), _bg_pixel(0),
  27     _bcolor(0), _bwidth(0), _pos(0,0), _screen(parent->screen()),
  28     _fixed_width(false), _fixed_height(false),
  29     _event_dispatcher(parent->eventDispatcher())
  30 {
  31   assert(parent);
  32   parent->addChild(this);
  33   create();
  34   _event_dispatcher->registerHandler(_window, this);
  35   setStyle(_style); // let the widget initialize stuff
  36 }
  37
  38 Widget::Widget(EventDispatcher *event_dispatcher, Style *style,
  39                      Direction direction, Cursor cursor, int bevel_width,
  40                      bool override_redirect)
  41   : Surface(style->getScreen()),
  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), _pos(0,0),
  49     _screen(style->getScreen()), _fixed_width(false), _fixed_height(false),
  50     _event_dispatcher(event_dispatcher)
  51 {
  52   assert(event_dispatcher);
  53   assert(style);
  54   create(override_redirect);
  55   _event_dispatcher->registerHandler(_window, this);
  56   setStyle(_style); // let the widget initialize stuff
  57 }
  58
  59 Widget::~Widget()
  60 {
  61   if (_visible)
  62     hide();
  63
  64   _event_dispatcher->clearHandler(_window);
  65
  66   std::for_each(_children.begin(), _children.end(), PointerAssassin());
  67
  68   if (_parent)
  69     _parent->removeChild(this);
  70
  71   XDestroyWindow(**display, _window);
  72 }
  73
  74 void Widget::create(bool override_redirect)
  75 {
  76   const ScreenInfo *scr_info = display->screenInfo(_screen);
  77   Window p_window = _parent ? _parent->window() : scr_info->rootWindow();
  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, _pos.x(),
  98                           _pos.y(), width(), 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(_pos.x(), _pos.y(), w, height());
 109 }
 110
 111 void Widget::setHeight(int h)
 112 {
 113   assert(h > 0);
 114   _fixed_height = true;
 115   setGeometry(_pos.x(), _pos.y(), _pos.x(), 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   _pos.setPoint(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(_pos.x(), _pos.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   _pos.setPoint(x, y);
 155   setSize(width, height);
 156   _dirty = true;
 157
 158   // don't use an XMoveResizeWindow here, because it doesn't seem to move
 159   // windows with StaticGravity? This works, that didn't.
 160   XResizeWindow(**display, _window, width, height);
 161   XMoveWindow(**display, _window, x, y);
 162   _ignore_config+=2;
 163 }
 164
 165 void Widget::show(bool recursive)
 166 {
 167   if (_visible)
 168     return;
 169
 170   // make sure the internal state isn't mangled
 171   if (_dirty)
 172     update();
 173
 174   if (recursive) {
 175     WidgetList::iterator it = _children.begin(), end = _children.end();
 176     for (; it != end; ++it)
 177       (*it)->show();
 178   }
 179
 180   XMapWindow(**display, _window);
 181   _visible = true;
 182 }
 183
 184 void Widget::hide(bool recursive)
 185 {
 186   if (! _visible)
 187     return;
 188
 189   if (recursive) {
 190     WidgetList::iterator it = _children.begin(), end = _children.end();
 191     for (; it != end; ++it)
 192       (*it)->hide();
 193   }
 194
 195   XUnmapWindow(**display, _window);
 196   _visible = false;
 197 }
 198
 199 void Widget::focus(void)
 200 {
 201   _focused = true;
 202
 203   Widget::WidgetList::iterator it = _children.begin(),
 204     end = _children.end();
 205   for (; it != end; ++it)
 206     (*it)->focus();
 207 }
 208
 209 void Widget::unfocus(void)
 210 {
 211   _focused = false;
 212
 213   Widget::WidgetList::iterator it = _children.begin(),
 214     end = _children.end();
 215   for (; it != end; ++it)
 216     (*it)->unfocus();
 217 }
 218
 219 bool Widget::grabMouse(void)
 220 {
 221   Status ret = XGrabPointer(**display, _window, True,
 222                             (ButtonPressMask | ButtonReleaseMask |
 223                              ButtonMotionMask | EnterWindowMask |
 224                              LeaveWindowMask | PointerMotionMask),
 225                             GrabModeSync, GrabModeAsync, None, None,
 226                             CurrentTime);
 227   _grabbed_mouse = (ret == GrabSuccess);
 228   return _grabbed_mouse;
 229 }
 230
 231 void Widget::ungrabMouse(void)
 232 {
 233   if (! _grabbed_mouse)
 234     return;
 235
 236   XUngrabPointer(**display, CurrentTime);
 237   _grabbed_mouse = false;
 238 }
 239
 240 bool Widget::grabKeyboard(void)
 241 {
 242   Status ret = XGrabKeyboard(**display, _window, True,
 243                              GrabModeSync, GrabModeAsync, CurrentTime);
 244   _grabbed_keyboard = (ret == GrabSuccess);
 245   return _grabbed_keyboard;
 246
 247 }
 248
 249 void Widget::ungrabKeyboard(void)
 250 {
 251   if (! _grabbed_keyboard)
 252     return;
 253
 254   XUngrabKeyboard(**display, CurrentTime);
 255   _grabbed_keyboard = false;
 256 }
 257
 258 void Widget::render(void)
 259 {
 260   if (!_texture) return;
 261
 262   _bg_pixmap = _texture->render(width(), height(), _bg_pixmap);
 263
 264   if (_bg_pixmap) {
 265     XSetWindowBackgroundPixmap(**display, _window, _bg_pixmap);
 266     _bg_pixel = None;
 267   } else {
 268     unsigned int pix = _texture->color().pixel();
 269     if (pix != _bg_pixel) {
 270       _bg_pixel = pix;
 271       XSetWindowBackground(**display, _window, pix);
 272     }
 273   }
 274 }
 275
 276 void Widget::adjust(void)
 277 {
 278   if (_direction == Horizontal)
 279     adjustHorz();
 280   else
 281     adjustVert();
 282 }
 283
 284 void Widget::adjustHorz(void)
 285 {
 286   if (_children.size() == 0)
 287     return;
 288
 289   Widget *tmp;
 290   WidgetList::iterator it, end = _children.end();
 291
 292   int tallest = 0;
 293   int width = _bevel_width;
 294   WidgetList stretchable;
 295
 296   for (it = _children.begin(); it != end; ++it) {
 297     tmp = *it;
 298     if (tmp->isStretchableVert())
 299       tmp->setHeight(height() > _bevel_width * 2 ?
 300                      height() - _bevel_width * 2 : _bevel_width);
 301     if (tmp->isStretchableHorz())
 302       stretchable.push_back(tmp);
 303     else
 304       width += tmp->width() + _bevel_width;
 305
 306     if (tmp->height() > tallest)
 307       tallest = tmp->height();
 308   }
 309
 310   if (stretchable.size() > 0) {
 311     WidgetList::iterator str_it = stretchable.begin(),
 312       str_end = stretchable.end();
 313
 314     int str_width = Surface::width() - width / stretchable.size();
 315
 316     for (; str_it != str_end; ++str_it)
 317       (*str_it)->setWidth(str_width > _bevel_width ? str_width - _bevel_width
 318                           : _bevel_width);
 319   }
 320
 321   Widget *prev_widget = 0;
 322
 323   for (it = _children.begin(); it != end; ++it) {
 324     tmp = *it;
 325     int x, y;
 326
 327     if (prev_widget)
 328       x = prev_widget->_pos.x() + prev_widget->width() + _bevel_width;
 329     else
 330       x = _pos.x() + _bevel_width;
 331     y = (tallest - tmp->height()) / 2 + _bevel_width;
 332
 333     tmp->move(x, y);
 334
 335     prev_widget = tmp;
 336   }
 337
 338   internalResize(width, tallest + _bevel_width * 2);
 339 }
 340
 341 void Widget::adjustVert(void)
 342 {
 343   if (_children.size() == 0)
 344     return;
 345
 346   Widget *tmp;
 347   WidgetList::iterator it, end = _children.end();
 348
 349   int widest = 0;
 350   int height = _bevel_width;
 351   WidgetList stretchable;
 352
 353   for (it = _children.begin(); it != end; ++it) {
 354     tmp = *it;
 355     if (tmp->isStretchableHorz())
 356       tmp->setWidth(width() > _bevel_width * 2 ?
 357                     width() - _bevel_width * 2 : _bevel_width);
 358     if (tmp->isStretchableVert())
 359       stretchable.push_back(tmp);
 360     else
 361       height += tmp->height() + _bevel_width;
 362
 363     if (tmp->width() > widest)
 364       widest = tmp->width();
 365   }
 366
 367   if (stretchable.size() > 0) {
 368     WidgetList::iterator str_it = stretchable.begin(),
 369       str_end = stretchable.end();
 370
 371     int str_height = Surface::height() - height / stretchable.size();
 372
 373     for (; str_it != str_end; ++str_it)
 374       (*str_it)->setHeight(str_height > _bevel_width ?
 375                            str_height - _bevel_width : _bevel_width);
 376   }
 377
 378   Widget *prev_widget = 0;
 379
 380   for (it = _children.begin(); it != end; ++it) {
 381     tmp = *it;
 382     int x, y;
 383
 384     if (prev_widget)
 385       y = prev_widget->_pos.y() + prev_widget->height() + _bevel_width;
 386     else
 387       y = _pos.y() + _bevel_width;
 388     x = (widest - tmp->width()) / 2 + _bevel_width;
 389
 390     tmp->move(x, y);
 391
 392     prev_widget = tmp;
 393   }
 394
 395   internalResize(widest + _bevel_width * 2, height);
 396 }
 397
 398 void Widget::update(void)
 399 {
 400   if (_dirty) {
 401     adjust();
 402     render();
 403     XClearWindow(**display, _window);
 404   }
 405
 406   WidgetList::iterator it = _children.begin(), end = _children.end();
 407   for (; it != end; ++it)
 408     (*it)->update();
 409
 410   _dirty = false;
 411 }
 412
 413 void Widget::internalResize(int w, int h)
 414 {
 415   assert(w > 0 && h > 0);
 416
 417   if (! _fixed_width && ! _fixed_height)
 418     resize(w, h);
 419   else if (! _fixed_width)
 420     resize(w, height());
 421   else if (! _fixed_height)
 422     resize(width(), h);
 423 }
 424
 425 void Widget::addChild(Widget *child, bool front)
 426 {
 427   assert(child);
 428   if (front)
 429     _children.push_front(child);
 430   else
 431     _children.push_back(child);
 432 }
 433
 434 void Widget::removeChild(Widget *child)
 435 {
 436   assert(child);
 437   WidgetList::iterator it, end = _children.end();
 438   for (it = _children.begin(); it != end; ++it) {
 439     if ((*it) == child)
 440       break;
 441   }
 442
 443   if (it != _children.end())
 444     _children.erase(it);
 445 }
 446
 447 void Widget::setStyle(Style *style)
 448 {
 449   assert(style);
 450   _style = style;
 451   _dirty = true;
 452
 453   WidgetList::iterator it, end = _children.end();
 454   for (it = _children.begin(); it != end; ++it)
 455     (*it)->setStyle(style);
 456 }
 457
 458
 459 void Widget::setEventDispatcher(EventDispatcher *disp)
 460 {
 461   if (_event_dispatcher)
 462     _event_dispatcher->clearHandler(_window);
 463   _event_dispatcher = disp;
 464   _event_dispatcher->registerHandler(_window, this);
 465 }
 466
 467 void Widget::exposeHandler(const XExposeEvent &e)
 468 {
 469   EventHandler::exposeHandler(e);
 470   _dirty = true;
 471   update();
 472 }
 473
 474 void Widget::configureHandler(const XConfigureEvent &e)
 475 {
 476   EventHandler::configureHandler(e);
 477   if (_ignore_config) {
 478     _ignore_config--;
 479   } else {
 480     if (!(e.width == width() && e.height == height())) {
 481       _dirty = true;
 482       _pos.setPoint(e.x, e.y);
 483       setSize(e.width, e.height);
 484     }
 485     update();
 486   }
 487 }
 488
 489 }