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