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