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(void)
 151 {
 152   if (_visible)
 153     return;
 154
 155   // make sure the internal state isn't mangled
 156   if (_dirty)
 157     update();
 158
 159   OtkWidgetList::iterator it = _children.begin(), end = _children.end();
 160   for (; it != end; ++it)
 161     (*it)->show();
 162
 163   XMapWindow(otk::OBDisplay::display, _window);
 164   _visible = true;
 165 }
 166
 167 void OtkWidget::hide(void)
 168 {
 169   if (! _visible)
 170     return;
 171
 172   OtkWidgetList::iterator it = _children.begin(), end = _children.end();
 173   for (; it != end; ++it)
 174     (*it)->hide();
 175
 176   XUnmapWindow(otk::OBDisplay::display, _window);
 177   _visible = false;
 178 }
 179
 180 void OtkWidget::focus(void)
 181 {
 182   if (! _visible)
 183     return;
 184
 185   XSetInputFocus(otk::OBDisplay::display, _window, RevertToPointerRoot,
 186                  CurrentTime);
 187 }
 188
 189 bool OtkWidget::grabMouse(void)
 190 {
 191   Status ret = XGrabPointer(otk::OBDisplay::display, _window, True,
 192                             (ButtonPressMask | ButtonReleaseMask |
 193                              ButtonMotionMask | EnterWindowMask |
 194                              LeaveWindowMask | PointerMotionMask),
 195                             GrabModeSync, GrabModeAsync, None, None,
 196                             CurrentTime);
 197   _grabbed_mouse = (ret == GrabSuccess);
 198   return _grabbed_mouse;
 199 }
 200
 201 void OtkWidget::ungrabMouse(void)
 202 {
 203   if (! _grabbed_mouse)
 204     return;
 205
 206   XUngrabPointer(otk::OBDisplay::display, CurrentTime);
 207   _grabbed_mouse = false;
 208 }
 209
 210 bool OtkWidget::grabKeyboard(void)
 211 {
 212   Status ret = XGrabKeyboard(otk::OBDisplay::display, _window, True,
 213                              GrabModeSync, GrabModeAsync, CurrentTime);
 214   _grabbed_keyboard = (ret == GrabSuccess);
 215   return _grabbed_keyboard;
 216
 217 }
 218
 219 void OtkWidget::ungrabKeyboard(void)
 220 {
 221   if (! _grabbed_keyboard)
 222     return;
 223
 224   XUngrabKeyboard(otk::OBDisplay::display, CurrentTime);
 225   _grabbed_keyboard = false;
 226 }
 227
 228 void OtkWidget::render(void)
 229 {
 230   _bg_pixmap = _texture->render(_rect.width(), _rect.height(), _bg_pixmap);
 231
 232   if (_bg_pixmap)
 233     XSetWindowBackgroundPixmap(otk::OBDisplay::display, _window, _bg_pixmap);
 234   else {
 235     unsigned int pix = _texture->color().pixel();
 236     if (pix != _bg_pixel) {
 237       _bg_pixel = pix;
 238       XSetWindowBackground(otk::OBDisplay::display, _window, pix);
 239     }
 240   }
 241 }
 242
 243 void OtkWidget::adjust(void)
 244 {
 245   if (_direction == Horizontal)
 246     adjustHorz();
 247   else
 248     adjustVert();
 249 }
 250
 251 void OtkWidget::adjustHorz(void)
 252 {
 253   if (_children.size() == 0)
 254     return;
 255
 256   OtkWidget *tmp;
 257   OtkWidgetList::iterator it, end = _children.end();
 258
 259   int tallest = 0;
 260   int width = _bevel_width;
 261   OtkWidgetList stretchable;
 262
 263   for (it = _children.begin(); it != end; ++it) {
 264     tmp = *it;
 265     if (tmp->isStretchableVert())
 266       tmp->setHeight(_rect.height() > _bevel_width * 2 ?
 267                      _rect.height() - _bevel_width * 2 : _bevel_width);
 268     if (tmp->isStretchableHorz())
 269       stretchable.push_back(tmp);
 270     else
 271       width += tmp->_rect.width() + _bevel_width;
 272
 273     if (tmp->_rect.height() > tallest)
 274       tallest = tmp->_rect.height();
 275   }
 276
 277   if (stretchable.size() > 0) {
 278     OtkWidgetList::iterator str_it = stretchable.begin(),
 279       str_end = stretchable.end();
 280
 281     int str_width = _rect.width() - width / stretchable.size();
 282
 283     for (; str_it != str_end; ++str_it)
 284       (*str_it)->setWidth(str_width > _bevel_width ? str_width - _bevel_width
 285                           : _bevel_width);
 286   }
 287
 288   OtkWidget *prev_widget = 0;
 289
 290   for (it = _children.begin(); it != end; ++it) {
 291     tmp = *it;
 292     int x, y;
 293
 294     if (prev_widget)
 295       x = prev_widget->_rect.x() + prev_widget->_rect.width() + _bevel_width;
 296     else
 297       x = _rect.x() + _bevel_width;
 298     y = (tallest - tmp->_rect.height()) / 2 + _bevel_width;
 299
 300     tmp->move(x, y);
 301
 302     prev_widget = tmp;
 303   }
 304
 305   internalResize(width, tallest + _bevel_width * 2);
 306 }
 307
 308 void OtkWidget::adjustVert(void)
 309 {
 310   if (_children.size() == 0)
 311     return;
 312
 313   OtkWidget *tmp;
 314   OtkWidgetList::iterator it, end = _children.end();
 315
 316   int widest = 0;
 317   int height = _bevel_width;
 318   OtkWidgetList stretchable;
 319
 320   for (it = _children.begin(); it != end; ++it) {
 321     tmp = *it;
 322     if (tmp->isStretchableHorz())
 323       tmp->setWidth(_rect.width() > _bevel_width * 2 ?
 324                     _rect.width() - _bevel_width * 2 : _bevel_width);
 325     if (tmp->isStretchableVert())
 326       stretchable.push_back(tmp);
 327     else
 328       height += tmp->_rect.height() + _bevel_width;
 329
 330     if (tmp->_rect.width() > widest)
 331       widest = tmp->_rect.width();
 332   }
 333
 334   if (stretchable.size() > 0) {
 335     OtkWidgetList::iterator str_it = stretchable.begin(),
 336       str_end = stretchable.end();
 337
 338     int str_height = _rect.height() - height / stretchable.size();
 339
 340     for (; str_it != str_end; ++str_it)
 341       (*str_it)->setHeight(str_height > _bevel_width ?
 342                            str_height - _bevel_width : _bevel_width);
 343   }
 344
 345   OtkWidget *prev_widget = 0;
 346
 347   for (it = _children.begin(); it != end; ++it) {
 348     tmp = *it;
 349     int x, y;
 350
 351     if (prev_widget)
 352       y = prev_widget->_rect.y() + prev_widget->_rect.height() + _bevel_width;
 353     else
 354       y = _rect.y() + _bevel_width;
 355     x = (widest - tmp->_rect.width()) / 2 + _bevel_width;
 356
 357     tmp->move(x, y);
 358
 359     prev_widget = tmp;
 360   }
 361
 362   internalResize(widest + _bevel_width * 2, height);
 363 }
 364
 365 void OtkWidget::update(void)
 366 {
 367   if (_dirty) {
 368     adjust();
 369     render();
 370     XClearWindow(OBDisplay::display, _window);
 371   }
 372
 373   OtkWidgetList::iterator it = _children.begin(), end = _children.end();
 374   for (; it != end; ++it)
 375     (*it)->update();
 376
 377   _dirty = false;
 378 }
 379
 380 void OtkWidget::internalResize(int w, int h)
 381 {
 382   assert(w > 0 && h > 0);
 383
 384   if (! _fixed_width && ! _fixed_height)
 385     resize(w, h);
 386   else if (! _fixed_width)
 387     resize(w, _rect.height());
 388   else if (! _fixed_height)
 389     resize(_rect.width(), h);
 390 }
 391
 392 void OtkWidget::addChild(OtkWidget *child, bool front)
 393 {
 394   assert(child);
 395   if (front)
 396     _children.push_front(child);
 397   else
 398     _children.push_back(child);
 399 }
 400
 401 void OtkWidget::removeChild(OtkWidget *child)
 402 {
 403   assert(child);
 404   OtkWidgetList::iterator it, end = _children.end();
 405   for (it = _children.begin(); it != end; ++it) {
 406     if ((*it) == child)
 407       break;
 408   }
 409
 410   if (it != _children.end())
 411     _children.erase(it);
 412 }
 413
 414 void OtkWidget::setEventDispatcher(OtkEventDispatcher *disp)
 415 {
 416   if (_event_dispatcher)
 417     _event_dispatcher->clearHandler(_window);
 418   _event_dispatcher = disp;
 419   _event_dispatcher->registerHandler(_window, this);
 420 }
 421
 422 void OtkWidget::exposeHandler(const XExposeEvent &e)
 423 {
 424   OtkEventHandler::exposeHandler(e);
 425   _dirty = true;
 426   update();
 427 }
 428
 429 void OtkWidget::configureHandler(const XConfigureEvent &e)
 430 {
 431   OtkEventHandler::configureHandler(e);
 432   if (_ignore_config) {
 433     _ignore_config--;
 434   } else {
 435     if (!(e.width == _rect.width() && e.height == _rect.height())) {
 436       _dirty = true;
 437       _rect.setSize(e.width, e.height);
 438     }
 439     update();
 440   }
 441 }
 442
 443 }