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