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), _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   setStyle(_style); // let the widget initialize stuff
  36 }
  37
  38 Widget::Widget(EventDispatcher *event_dispatcher, RenderStyle *style,
  39                Direction direction, Cursor cursor, int bevel_width,
  40                bool override_redirect)
  41   : EventHandler(),
  42     _dirty(false),_focused(false),
  43     _parent(0), _style(style), _direction(direction), _cursor(cursor),
  44     _bevel_width(bevel_width), _ignore_config(0), _visible(false),
  45     _grabbed_mouse(false), _grabbed_keyboard(false),
  46     _stretchable_vert(false), _stretchable_horz(false), _texture(0),
  47     _bg_pixmap(0), _bg_pixel(0), _bcolor(0), _bwidth(0), _rect(0, 0, 1, 1),
  48     _screen(style->screen()), _fixed_width(false), _fixed_height(false),
  49     _surface(0),
  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   _rect.setRect(0, 0, 1, 1); // just some initial values
  80
  81   XSetWindowAttributes attrib_create;
  82   unsigned long create_mask = CWBackPixmap | CWBorderPixel | CWEventMask;
  83
  84   attrib_create.background_pixmap = None;
  85   attrib_create.colormap = scr_info->colormap();
  86   attrib_create.event_mask = ButtonPressMask | ButtonReleaseMask |
  87     ButtonMotionMask | ExposureMask | StructureNotifyMask;
  88
  89   if (override_redirect) {
  90     create_mask |= CWOverrideRedirect;
  91     attrib_create.override_redirect = true;
  92   }
  93
  94   if (_cursor) {
  95     create_mask |= CWCursor;
  96     attrib_create.cursor = _cursor;
  97   }
  98
  99   _window = XCreateWindow(**display, p_window, _rect.x(),
 100                           _rect.y(), _rect.width(), _rect.height(), 0,
 101                           scr_info->depth(), InputOutput,
 102                           scr_info->visual(), create_mask, &attrib_create);
 103   _ignore_config++;
 104 }
 105
 106 void Widget::setWidth(int w)
 107 {
 108   assert(w > 0);
 109   _fixed_width = true;
 110   setGeometry(_rect.x(), _rect.y(), w, _rect.height());
 111 }
 112
 113 void Widget::setHeight(int h)
 114 {
 115   assert(h > 0);
 116   _fixed_height = true;
 117   setGeometry(_rect.x(), _rect.y(), _rect.width(), h);
 118 }
 119
 120 void Widget::move(const Point &to)
 121 {
 122   move(to.x(), to.y());
 123 }
 124
 125 void Widget::move(int x, int y)
 126 {
 127   _rect.setPos(x, y);
 128   XMoveWindow(**display, _window, x, y);
 129   _ignore_config++;
 130 }
 131
 132 void Widget::resize(const Point &to)
 133 {
 134   resize(to.x(), to.y());
 135 }
 136
 137 void Widget::resize(int w, int h)
 138 {
 139   assert(w > 0 && h > 0);
 140   _fixed_width = _fixed_height = true;
 141   setGeometry(_rect.x(), _rect.y(), w, h);
 142 }
 143
 144 void Widget::setGeometry(const Rect &new_geom)
 145 {
 146   setGeometry(new_geom.x(), new_geom.y(), new_geom.width(), new_geom.height());
 147 }
 148
 149 void Widget::setGeometry(const Point &topleft, int width, int height)
 150 {
 151   setGeometry(topleft.x(), topleft.y(), width, height);
 152 }
 153
 154 void Widget::setGeometry(int x, int y, int width, int height)
 155 {
 156   _rect = Rect(x, y, width, height);
 157   _dirty = true;
 158
 159   // don't use an XMoveResizeWindow here, because it doesn't seem to move
 160   // windows with StaticGravity? This works, that didn't.
 161   XResizeWindow(**display, _window, width, height);
 162   XMoveWindow(**display, _window, x, y);
 163   _ignore_config+=2;
 164 }
 165
 166 void Widget::show(bool recursive)
 167 {
 168   if (_visible)
 169     return;
 170
 171   // make sure the internal state isn't mangled
 172   if (_dirty)
 173     update();
 174
 175   if (recursive) {
 176     WidgetList::iterator it = _children.begin(), end = _children.end();
 177     for (; it != end; ++it)
 178       (*it)->show();
 179   }
 180
 181   XMapWindow(**display, _window);
 182   _visible = true;
 183 }
 184
 185 void Widget::hide(bool recursive)
 186 {
 187   if (! _visible)
 188     return;
 189
 190   if (recursive) {
 191     WidgetList::iterator it = _children.begin(), end = _children.end();
 192     for (; it != end; ++it)
 193       (*it)->hide();
 194   }
 195
 196   XUnmapWindow(**display, _window);
 197   _visible = false;
 198 }
 199
 200 void Widget::focus(void)
 201 {
 202   _focused = true;
 203
 204   Widget::WidgetList::iterator it = _children.begin(),
 205     end = _children.end();
 206   for (; it != end; ++it)
 207     (*it)->focus();
 208 }
 209
 210 void Widget::unfocus(void)
 211 {
 212   _focused = false;
 213
 214   Widget::WidgetList::iterator it = _children.begin(),
 215     end = _children.end();
 216   for (; it != end; ++it)
 217     (*it)->unfocus();
 218 }
 219
 220 bool Widget::grabMouse(void)
 221 {
 222   Status ret = XGrabPointer(**display, _window, True,
 223                             (ButtonPressMask | ButtonReleaseMask |
 224                              ButtonMotionMask | EnterWindowMask |
 225                              LeaveWindowMask | PointerMotionMask),
 226                             GrabModeSync, GrabModeAsync, None, None,
 227                             CurrentTime);
 228   _grabbed_mouse = (ret == GrabSuccess);
 229   return _grabbed_mouse;
 230 }
 231
 232 void Widget::ungrabMouse(void)
 233 {
 234   if (! _grabbed_mouse)
 235     return;
 236
 237   XUngrabPointer(**display, CurrentTime);
 238   _grabbed_mouse = false;
 239 }
 240
 241 bool Widget::grabKeyboard(void)
 242 {
 243   Status ret = XGrabKeyboard(**display, _window, True,
 244                              GrabModeSync, GrabModeAsync, CurrentTime);
 245   _grabbed_keyboard = (ret == GrabSuccess);
 246   return _grabbed_keyboard;
 247
 248 }
 249
 250 void Widget::ungrabKeyboard(void)
 251 {
 252   if (! _grabbed_keyboard)
 253     return;
 254
 255   XUngrabKeyboard(**display, CurrentTime);
 256   _grabbed_keyboard = false;
 257 }
 258
 259 void Widget::render(void)
 260 {
 261   if (!_texture) return;
 262   printf("RENDER\n");
 263
 264   Surface *s = _surface; // save the current surface
 265
 266   _surface = new Surface(_screen, _rect.size());
 267   display->renderControl(_screen)->drawBackground(*_surface, *_texture);
 268
 269   renderForeground();
 270
 271   XSetWindowBackgroundPixmap(**display, _window, _surface->pixmap());
 272
 273   delete s; // delete the old surface *after* its pixmap isn't in use anymore
 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(_rect.height() > _bevel_width * 2 ?
 300                      _rect.height() - _bevel_width * 2 : _bevel_width);
 301     if (tmp->isStretchableHorz())
 302       stretchable.push_back(tmp);
 303     else
 304       width += tmp->_rect.width() + _bevel_width;
 305
 306     if (tmp->_rect.height() > tallest)
 307       tallest = tmp->_rect.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 = _rect.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->_rect.x() + prev_widget->_rect.width() + _bevel_width;
 329     else
 330       x = _rect.x() + _bevel_width;
 331     y = (tallest - tmp->_rect.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(_rect.width() > _bevel_width * 2 ?
 357                     _rect.width() - _bevel_width * 2 : _bevel_width);
 358     if (tmp->isStretchableVert())
 359       stretchable.push_back(tmp);
 360     else
 361       height += tmp->_rect.height() + _bevel_width;
 362
 363     if (tmp->_rect.width() > widest)
 364       widest = tmp->_rect.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 = _rect.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->_rect.y() + prev_widget->_rect.height() + _bevel_width;
 386     else
 387       y = _rect.y() + _bevel_width;
 388     x = (widest - tmp->_rect.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, _rect.height());
 421   else if (! _fixed_height)
 422     resize(_rect.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(RenderStyle *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 //  XClearArea(**display, _window, e.x, e.y, e.width, e.height, false);
 471 }
 472
 473 void Widget::configureHandler(const XConfigureEvent &e)
 474 {
 475   EventHandler::configureHandler(e);
 476
 477   if (_ignore_config) {
 478     _ignore_config--;
 479   } else {
 480     int width = e.width;
 481     int height = e.height;
 482
 483     XEvent ev;
 484     while (XCheckTypedWindowEvent(**display, _window, ConfigureNotify, &ev)) {
 485       width = ev.xconfigure.width;
 486       height = ev.xconfigure.height;
 487     }
 488
 489     if (!(width == _rect.width() && height == _rect.height())) {
 490       _dirty = true;
 491       _rect.setSize(width, height);
 492     }
 493     update();
 494   }
 495 }
 496
 497 }