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),
  20     _parent(parent), _style(parent->getStyle()), _direction(direction),
  21     _cursor(parent->getCursor()), _bevel_width(parent->getBevelWidth()),
  22     _ignore_config(0),
  23     _visible(false), _focused(false), _grabbed_mouse(false),
  24     _grabbed_keyboard(false), _stretchable_vert(false),
  25     _stretchable_horz(false), _texture(0), _bg_pixmap(0), _bg_pixel(0),
  26     _screen(parent->getScreen()), _fixed_width(false), _fixed_height(false),
  27     _event_dispatcher(parent->getEventDispatcher()), _application(0)
  28 {
  29   assert(parent);
  30   parent->addChild(this);
  31   create();
  32   _event_dispatcher->registerHandler(_window, this);
  33 }
  34
  35 OtkWidget::OtkWidget(OtkEventDispatcher *event_dispatcher, Style *style,
  36                      Direction direction, Cursor cursor, int bevel_width)
  37   : OtkEventHandler(),
  38     _dirty(false),
  39     _parent(0), _style(style), _direction(direction), _cursor(cursor),
  40     _bevel_width(bevel_width), _ignore_config(0), _visible(false),
  41     _focused(false), _grabbed_mouse(false), _grabbed_keyboard(false),
  42     _stretchable_vert(false), _stretchable_horz(false), _texture(0),
  43     _bg_pixmap(0), _bg_pixel(0), _screen(style->getScreen()),
  44     _fixed_width(false), _fixed_height(false),
  45     _event_dispatcher(event_dispatcher), _application(0)
  46 {
  47   assert(event_dispatcher);
  48   assert(style);
  49   create();
  50   _event_dispatcher->registerHandler(_window, this);
  51 }
  52
  53 OtkWidget::~OtkWidget()
  54 {
  55   if (_visible)
  56     hide();
  57
  58   _event_dispatcher->clearHandler(_window);
  59
  60   std::for_each(_children.begin(), _children.end(), PointerAssassin());
  61
  62   if (_parent)
  63     _parent->removeChild(this);
  64
  65   XDestroyWindow(otk::OBDisplay::display, _window);
  66 }
  67
  68 void OtkWidget::create(void)
  69 {
  70   const ScreenInfo *scr_info = otk::OBDisplay::screenInfo(_screen);
  71   Window p_window = _parent ? _parent->getWindow() : scr_info->getRootWindow();
  72
  73   _rect.setRect(0, 0, 1, 1); // just some initial values
  74
  75   XSetWindowAttributes attrib_create;
  76   unsigned long create_mask = CWBackPixmap | CWBorderPixel | CWEventMask;
  77
  78   attrib_create.background_pixmap = None;
  79   attrib_create.colormap = scr_info->getColormap();
  80   attrib_create.event_mask = ButtonPressMask | ButtonReleaseMask |
  81     ButtonMotionMask | ExposureMask | StructureNotifyMask;
  82
  83   if (_cursor) {
  84     create_mask |= CWCursor;
  85     attrib_create.cursor = _cursor;
  86   }
  87
  88   _window = XCreateWindow(otk::OBDisplay::display, p_window, _rect.x(),
  89                           _rect.y(), _rect.width(), _rect.height(), 0,
  90                           scr_info->getDepth(), InputOutput,
  91                           scr_info->getVisual(), create_mask, &attrib_create);
  92   _ignore_config++;
  93 }
  94
  95 void OtkWidget::setWidth(int w)
  96 {
  97   assert(w > 0);
  98   _fixed_width = true;
  99   setGeometry(_rect.x(), _rect.y(), w, _rect.height());
 100 }
 101
 102 void OtkWidget::setHeight(int h)
 103 {
 104   assert(h > 0);
 105   _fixed_height = true;
 106   setGeometry(_rect.x(), _rect.y(), _rect.width(), h);
 107 }
 108
 109 void OtkWidget::move(const Point &to)
 110 {
 111   move(to.x(), to.y());
 112 }
 113
 114 void OtkWidget::move(int x, int y)
 115 {
 116   _rect.setPos(x, y);
 117   XMoveWindow(otk::OBDisplay::display, _window, x, y);
 118   _ignore_config++;
 119 }
 120
 121 void OtkWidget::resize(const Point &to)
 122 {
 123   resize(to.x(), to.y());
 124 }
 125
 126 void OtkWidget::resize(int w, int h)
 127 {
 128   assert(w > 0 && h > 0);
 129   _fixed_width = _fixed_height = true;
 130   setGeometry(_rect.x(), _rect.y(), w, h);
 131 }
 132
 133 void OtkWidget::setGeometry(const Rect &new_geom)
 134 {
 135   setGeometry(new_geom.x(), new_geom.y(), new_geom.width(), new_geom.height());
 136 }
 137
 138 void OtkWidget::setGeometry(const Point &topleft, int width, int height)
 139 {
 140   setGeometry(topleft.x(), topleft.y(), width, height);
 141 }
 142
 143 void OtkWidget::setGeometry(int x, int y, int width, int height)
 144 {
 145   _rect = Rect(x, y, width, height);
 146   _dirty = true;
 147
 148   XMoveResizeWindow(otk::OBDisplay::display, _window, x, y, width, height);
 149   _ignore_config++;
 150 }
 151
 152 void OtkWidget::show(bool recursive)
 153 {
 154   if (_visible)
 155     return;
 156
 157   // make sure the internal state isn't mangled
 158   if (_dirty)
 159     update();
 160
 161   if (recursive) {
 162     OtkWidgetList::iterator it = _children.begin(), end = _children.end();
 163     for (; it != end; ++it)
 164       (*it)->show();
 165   }
 166
 167   XMapWindow(otk::OBDisplay::display, _window);
 168   _visible = true;
 169 }
 170
 171 void OtkWidget::hide(bool recursive)
 172 {
 173   if (! _visible)
 174     return;
 175
 176   if (recursive) {
 177     OtkWidgetList::iterator it = _children.begin(), end = _children.end();
 178     for (; it != end; ++it)
 179       (*it)->hide();
 180   }
 181
 182   XUnmapWindow(otk::OBDisplay::display, _window);
 183   _visible = false;
 184 }
 185
 186 void OtkWidget::focus(void)
 187 {
 188   if (! _visible)
 189     return;
 190
 191   XSetInputFocus(otk::OBDisplay::display, _window, RevertToPointerRoot,
 192                  CurrentTime);
 193 }
 194
 195 bool OtkWidget::grabMouse(void)
 196 {
 197   Status ret = XGrabPointer(otk::OBDisplay::display, _window, True,
 198                             (ButtonPressMask | ButtonReleaseMask |
 199                              ButtonMotionMask | EnterWindowMask |
 200                              LeaveWindowMask | PointerMotionMask),
 201                             GrabModeSync, GrabModeAsync, None, None,
 202                             CurrentTime);
 203   _grabbed_mouse = (ret == GrabSuccess);
 204   return _grabbed_mouse;
 205 }
 206
 207 void OtkWidget::ungrabMouse(void)
 208 {
 209   if (! _grabbed_mouse)
 210     return;
 211
 212   XUngrabPointer(otk::OBDisplay::display, CurrentTime);
 213   _grabbed_mouse = false;
 214 }
 215
 216 bool OtkWidget::grabKeyboard(void)
 217 {
 218   Status ret = XGrabKeyboard(otk::OBDisplay::display, _window, True,
 219                              GrabModeSync, GrabModeAsync, CurrentTime);
 220   _grabbed_keyboard = (ret == GrabSuccess);
 221   return _grabbed_keyboard;
 222
 223 }
 224
 225 void OtkWidget::ungrabKeyboard(void)
 226 {
 227   if (! _grabbed_keyboard)
 228     return;
 229
 230   XUngrabKeyboard(otk::OBDisplay::display, CurrentTime);
 231   _grabbed_keyboard = false;
 232 }
 233
 234 void OtkWidget::render(void)
 235 {
 236   if (!_texture) return;
 237
 238   _bg_pixmap = _texture->render(_rect.width(), _rect.height(), _bg_pixmap);
 239
 240   if (_bg_pixmap)
 241     XSetWindowBackgroundPixmap(otk::OBDisplay::display, _window, _bg_pixmap);
 242   else {
 243     unsigned int pix = _texture->color().pixel();
 244     if (pix != _bg_pixel) {
 245       _bg_pixel = pix;
 246       XSetWindowBackground(otk::OBDisplay::display, _window, pix);
 247     }
 248   }
 249 }
 250
 251 void OtkWidget::adjust(void)
 252 {
 253   if (_direction == Horizontal)
 254     adjustHorz();
 255   else
 256     adjustVert();
 257 }
 258
 259 void OtkWidget::adjustHorz(void)
 260 {
 261   if (_children.size() == 0)
 262     return;
 263
 264   OtkWidget *tmp;
 265   OtkWidgetList::iterator it, end = _children.end();
 266
 267   int tallest = 0;
 268   int width = _bevel_width;
 269   OtkWidgetList stretchable;
 270
 271   for (it = _children.begin(); it != end; ++it) {
 272     tmp = *it;
 273     if (tmp->isStretchableVert())
 274       tmp->setHeight(_rect.height() > _bevel_width * 2 ?
 275                      _rect.height() - _bevel_width * 2 : _bevel_width);
 276     if (tmp->isStretchableHorz())
 277       stretchable.push_back(tmp);
 278     else
 279       width += tmp->_rect.width() + _bevel_width;
 280
 281     if (tmp->_rect.height() > tallest)
 282       tallest = tmp->_rect.height();
 283   }
 284
 285   if (stretchable.size() > 0) {
 286     OtkWidgetList::iterator str_it = stretchable.begin(),
 287       str_end = stretchable.end();
 288
 289     int str_width = _rect.width() - width / stretchable.size();
 290
 291     for (; str_it != str_end; ++str_it)
 292       (*str_it)->setWidth(str_width > _bevel_width ? str_width - _bevel_width
 293                           : _bevel_width);
 294   }
 295
 296   OtkWidget *prev_widget = 0;
 297
 298   for (it = _children.begin(); it != end; ++it) {
 299     tmp = *it;
 300     int x, y;
 301
 302     if (prev_widget)
 303       x = prev_widget->_rect.x() + prev_widget->_rect.width() + _bevel_width;
 304     else
 305       x = _rect.x() + _bevel_width;
 306     y = (tallest - tmp->_rect.height()) / 2 + _bevel_width;
 307
 308     tmp->move(x, y);
 309
 310     prev_widget = tmp;
 311   }
 312
 313   internalResize(width, tallest + _bevel_width * 2);
 314 }
 315
 316 void OtkWidget::adjustVert(void)
 317 {
 318   if (_children.size() == 0)
 319     return;
 320
 321   OtkWidget *tmp;
 322   OtkWidgetList::iterator it, end = _children.end();
 323
 324   int widest = 0;
 325   int height = _bevel_width;
 326   OtkWidgetList stretchable;
 327
 328   for (it = _children.begin(); it != end; ++it) {
 329     tmp = *it;
 330     if (tmp->isStretchableHorz())
 331       tmp->setWidth(_rect.width() > _bevel_width * 2 ?
 332                     _rect.width() - _bevel_width * 2 : _bevel_width);
 333     if (tmp->isStretchableVert())
 334       stretchable.push_back(tmp);
 335     else
 336       height += tmp->_rect.height() + _bevel_width;
 337
 338     if (tmp->_rect.width() > widest)
 339       widest = tmp->_rect.width();
 340   }
 341
 342   if (stretchable.size() > 0) {
 343     OtkWidgetList::iterator str_it = stretchable.begin(),
 344       str_end = stretchable.end();
 345
 346     int str_height = _rect.height() - height / stretchable.size();
 347
 348     for (; str_it != str_end; ++str_it)
 349       (*str_it)->setHeight(str_height > _bevel_width ?
 350                            str_height - _bevel_width : _bevel_width);
 351   }
 352
 353   OtkWidget *prev_widget = 0;
 354
 355   for (it = _children.begin(); it != end; ++it) {
 356     tmp = *it;
 357     int x, y;
 358
 359     if (prev_widget)
 360       y = prev_widget->_rect.y() + prev_widget->_rect.height() + _bevel_width;
 361     else
 362       y = _rect.y() + _bevel_width;
 363     x = (widest - tmp->_rect.width()) / 2 + _bevel_width;
 364
 365     tmp->move(x, y);
 366
 367     prev_widget = tmp;
 368   }
 369
 370   internalResize(widest + _bevel_width * 2, height);
 371 }
 372
 373 void OtkWidget::update(void)
 374 {
 375   if (_dirty) {
 376     if (! _unmanaged)
 377     adjust();
 378     render();
 379     XClearWindow(OBDisplay::display, _window);
 380   }
 381
 382   OtkWidgetList::iterator it = _children.begin(), end = _children.end();
 383   for (; it != end; ++it)
 384     (*it)->update();
 385
 386   _dirty = false;
 387 }
 388
 389 void OtkWidget::internalResize(int w, int h)
 390 {
 391   assert(w > 0 && h > 0);
 392
 393   if (! _fixed_width && ! _fixed_height)
 394     resize(w, h);
 395   else if (! _fixed_width)
 396     resize(w, _rect.height());
 397   else if (! _fixed_height)
 398     resize(_rect.width(), h);
 399 }
 400
 401 void OtkWidget::addChild(OtkWidget *child, bool front)
 402 {
 403   assert(child);
 404   if (front)
 405     _children.push_front(child);
 406   else
 407     _children.push_back(child);
 408 }
 409
 410 void OtkWidget::removeChild(OtkWidget *child)
 411 {
 412   assert(child);
 413   OtkWidgetList::iterator it, end = _children.end();
 414   for (it = _children.begin(); it != end; ++it) {
 415     if ((*it) == child)
 416       break;
 417   }
 418
 419   if (it != _children.end())
 420     _children.erase(it);
 421 }
 422
 423 void OtkWidget::setStyle(Style *style)
 424 {
 425   assert(style);
 426   _style = style;
 427   _dirty = true;
 428   OtkWidgetList::iterator it, end = _children.end();
 429   for (it = _children.begin(); it != end; ++it)
 430     (*it)->setStyle(style);
 431 }
 432
 433
 434 void OtkWidget::setEventDispatcher(OtkEventDispatcher *disp)
 435 {
 436   if (_event_dispatcher)
 437     _event_dispatcher->clearHandler(_window);
 438   _event_dispatcher = disp;
 439   _event_dispatcher->registerHandler(_window, this);
 440 }
 441
 442 void OtkWidget::exposeHandler(const XExposeEvent &e)
 443 {
 444   OtkEventHandler::exposeHandler(e);
 445   _dirty = true;
 446   update();
 447 }
 448
 449 void OtkWidget::configureHandler(const XConfigureEvent &e)
 450 {
 451   OtkEventHandler::configureHandler(e);
 452   if (_ignore_config) {
 453     _ignore_config--;
 454   } else {
 455     if (!(e.width == _rect.width() && e.height == _rect.height())) {
 456       _dirty = true;
 457       _rect.setSize(e.width, e.height);
 458     }
 459     update();
 460   }
 461 }
 462
 463 }