Dogcows Code - chaz/openbox/blob - otk/widget.cc

   1 #include "widget.hh"
   2 #include "display.hh"
   3 #include "assassin.hh"
   4 #include "screeninfo.hh"
   5
   6 #include <algorithm>
   7 #include <iostream>
   8
   9 namespace otk {
  10
  11 OtkWidget::OtkWidget(OtkWidget *parent, Direction direction)
  12   : _parent(parent), _style(parent->getStyle()), _direction(direction),
  13     _cursor(parent->getCursor()), _bevel_width(parent->getBevelWidth()),
  14     _visible(false), _focused(false), _grabbed_mouse(false),
  15     _grabbed_keyboard(false), _stretchable_vert(false),
  16     _stretchable_horz(false), _texture(0), _bg_pixmap(0), _bg_pixel(0),
  17     _screen(parent->getScreen()), _fixed_width(false), _fixed_height(false),
  18     _dirty(false)
  19 {
  20   parent->addChild(this);
  21   create();
  22 }
  23
  24 OtkWidget::OtkWidget(Style *style, Direction direction,
  25                      Cursor cursor, int bevel_width)
  26   : _parent(0), _style(style), _direction(direction), _cursor(cursor),
  27     _bevel_width(bevel_width), _visible(false),
  28     _focused(false), _grabbed_mouse(false), _grabbed_keyboard(false),
  29     _stretchable_vert(false), _stretchable_horz(false), _texture(0),
  30     _bg_pixmap(0), _bg_pixel(0), _screen(style->getScreen()),
  31     _fixed_width(false), _fixed_height(false), _dirty(false)
  32 {
  33   assert(style);
  34   create();
  35 }
  36
  37 OtkWidget::~OtkWidget()
  38 {
  39   if (_visible)
  40     hide();
  41
  42   std::for_each(_children.begin(), _children.end(), PointerAssassin());
  43
  44   if (_parent)
  45     _parent->removeChild(this);
  46
  47   XDestroyWindow(otk::OBDisplay::display, _window);
  48 }
  49
  50 void OtkWidget::create(void)
  51 {
  52   const ScreenInfo *scr_info = otk::OBDisplay::screenInfo(_screen);
  53   Window p_window = _parent ? _parent->getWindow() : scr_info->getRootWindow();
  54
  55   _rect.setRect(0, 0, 1, 1); // just some initial values
  56
  57   XSetWindowAttributes attrib_create;
  58   unsigned long create_mask = CWBackPixmap | CWBorderPixel | CWEventMask;
  59
  60   attrib_create.background_pixmap = None;
  61   attrib_create.colormap = scr_info->getColormap();
  62   attrib_create.event_mask = ButtonPressMask | ButtonReleaseMask |
  63     ButtonMotionMask | ExposureMask | StructureNotifyMask;
  64
  65   if (_cursor) {
  66     create_mask |= CWCursor;
  67     attrib_create.cursor = _cursor;
  68   }
  69
  70   _window = XCreateWindow(otk::OBDisplay::display, p_window, _rect.x(),
  71                           _rect.y(), _rect.width(), _rect.height(), 0,
  72                           scr_info->getDepth(), InputOutput,
  73                           scr_info->getVisual(), create_mask, &attrib_create);
  74 }
  75
  76 void OtkWidget::setWidth(int w)
  77 {
  78   assert(w > 0);
  79   _fixed_width = true;
  80   setGeometry(_rect.x(), _rect.y(), w, _rect.height());
  81 }
  82
  83 void OtkWidget::setHeight(int h)
  84 {
  85   assert(h > 0);
  86   _fixed_height = true;
  87   setGeometry(_rect.x(), _rect.y(), _rect.width(), h);
  88 }
  89
  90 void OtkWidget::move(const Point &to)
  91 {
  92   move(to.x(), to.y());
  93 }
  94
  95 void OtkWidget::move(int x, int y)
  96 {
  97   _rect.setPos(x, y);
  98   XMoveWindow(otk::OBDisplay::display, _window, x, y);
  99 }
 100
 101 void OtkWidget::resize(const Point &to)
 102 {
 103   resize(to.x(), to.y());
 104 }
 105
 106 void OtkWidget::resize(int w, int h)
 107 {
 108   assert(w > 0 && h > 0);
 109   _fixed_width = _fixed_height = true;
 110   setGeometry(_rect.x(), _rect.y(), w, h);
 111 }
 112
 113 void OtkWidget::setGeometry(const Rect &new_geom)
 114 {
 115   setGeometry(new_geom.x(), new_geom.y(), new_geom.width(), new_geom.height());
 116 }
 117
 118 void OtkWidget::setGeometry(const Point &topleft, int width, int height)
 119 {
 120   setGeometry(topleft.x(), topleft.y(), width, height);
 121 }
 122
 123 void OtkWidget::setGeometry(int x, int y, int width, int height)
 124 {
 125   _rect = Rect(x, y, width, height);
 126   _dirty = true;
 127
 128   XMoveResizeWindow(otk::OBDisplay::display, _window, x, y, width, height);
 129 }
 130
 131 void OtkWidget::show(void)
 132 {
 133   if (_visible)
 134     return;
 135
 136   // make sure the internal state isn't mangled
 137   if (_dirty)
 138     update();
 139
 140   OtkWidgetList::iterator it = _children.begin(), end = _children.end();
 141   for (; it != end; ++it)
 142     (*it)->show();
 143
 144   XMapWindow(otk::OBDisplay::display, _window);
 145   _visible = true;
 146 }
 147
 148 void OtkWidget::hide(void)
 149 {
 150   if (! _visible)
 151     return;
 152
 153   OtkWidgetList::iterator it = _children.begin(), end = _children.end();
 154   for (; it != end; ++it)
 155     (*it)->hide();
 156
 157   XUnmapWindow(otk::OBDisplay::display, _window);
 158   _visible = false;
 159 }
 160
 161 void OtkWidget::focus(void)
 162 {
 163   if (! _visible)
 164     return;
 165
 166   XSetInputFocus(otk::OBDisplay::display, _window, RevertToPointerRoot,
 167                  CurrentTime);
 168 }
 169
 170 bool OtkWidget::grabMouse(void)
 171 {
 172   Status ret = XGrabPointer(otk::OBDisplay::display, _window, True,
 173                             (ButtonPressMask | ButtonReleaseMask |
 174                              ButtonMotionMask | EnterWindowMask |
 175                              LeaveWindowMask | PointerMotionMask),
 176                             GrabModeSync, GrabModeAsync, None, None,
 177                             CurrentTime);
 178   _grabbed_mouse = (ret == GrabSuccess);
 179   return _grabbed_mouse;
 180 }
 181
 182 void OtkWidget::ungrabMouse(void)
 183 {
 184   if (! _grabbed_mouse)
 185     return;
 186
 187   XUngrabPointer(otk::OBDisplay::display, CurrentTime);
 188   _grabbed_mouse = false;
 189 }
 190
 191 bool OtkWidget::grabKeyboard(void)
 192 {
 193   Status ret = XGrabKeyboard(otk::OBDisplay::display, _window, True,
 194                              GrabModeSync, GrabModeAsync, CurrentTime);
 195   _grabbed_keyboard = (ret == GrabSuccess);
 196   return _grabbed_keyboard;
 197
 198 }
 199
 200 void OtkWidget::ungrabKeyboard(void)
 201 {
 202   if (! _grabbed_keyboard)
 203     return;
 204
 205   XUngrabKeyboard(otk::OBDisplay::display, CurrentTime);
 206   _grabbed_keyboard = false;
 207 }
 208
 209 void OtkWidget::render(void)
 210 {
 211   Pixmap old = _bg_pixmap;
 212
 213   _bg_pixmap = _texture->render(_rect.width(), _rect.height(), _bg_pixmap);
 214
 215   if (_bg_pixmap && _bg_pixmap != old)
 216     XSetWindowBackgroundPixmap(otk::OBDisplay::display, _window, _bg_pixmap);
 217   else {
 218     unsigned int pix = _texture->color().pixel();
 219     if (pix != _bg_pixel) {
 220       _bg_pixel = pix;
 221       XSetWindowBackground(otk::OBDisplay::display, _window, pix);
 222     }
 223   }
 224 }
 225
 226 void OtkWidget::adjust(void)
 227 {
 228   if (_direction == Horizontal)
 229     adjustHorz();
 230   else
 231     adjustVert();
 232 }
 233
 234 void OtkWidget::adjustHorz(void)
 235 {
 236   if (_children.size() == 0)
 237     return;
 238
 239   OtkWidget *tmp;
 240   OtkWidgetList::iterator it, end = _children.end();
 241
 242   int tallest = 0;
 243   int width = _bevel_width;
 244   OtkWidgetList stretchable;
 245
 246   for (it = _children.begin(); it != end; ++it) {
 247     tmp = *it;
 248     if (tmp->isStretchableHorz() && _fixed_width)
 249       stretchable.push_back(tmp);
 250     else
 251       width += tmp->_rect.width() + _bevel_width;
 252
 253     if (tmp->_rect.height() > tallest)
 254       tallest = tmp->_rect.height();
 255   }
 256
 257   if (stretchable.size() > 0) {
 258     OtkWidgetList::iterator str_it = stretchable.begin(),
 259       str_end = stretchable.end();
 260
 261     int str_width = _rect.width() - width / stretchable.size();
 262
 263     for (; str_it != str_end; ++str_it) {
 264       (*str_it)->setWidth(str_width - _bevel_width);
 265       (*str_it)->update();
 266     }
 267   }
 268
 269   OtkWidget *prev_widget = 0;
 270
 271   for (it = _children.begin(); it != end; ++it) {
 272     tmp = *it;
 273     int x, y;
 274
 275     if (prev_widget)
 276       x = prev_widget->_rect.x() + prev_widget->_rect.width() + _bevel_width;
 277     else
 278       x = _rect.x() + _bevel_width;
 279     y = (tallest - tmp->_rect.height()) / 2 + _bevel_width;
 280
 281     tmp->move(x, y);
 282
 283     prev_widget = tmp;
 284   }
 285
 286   internalResize(width, tallest + _bevel_width * 2);
 287 }
 288
 289 void OtkWidget::adjustVert(void)
 290 {
 291   if (_children.size() == 0)
 292     return;
 293
 294   OtkWidget *tmp;
 295   OtkWidgetList::iterator it, end = _children.end();
 296
 297   int widest = 0;
 298   int height = _bevel_width;
 299   for (it = _children.begin(); it != end; ++it) {
 300     tmp = *it;
 301     if (tmp->_rect.width() > widest)
 302       widest = tmp->_rect.width();
 303     height += tmp->_rect.height() + _bevel_width;
 304   }
 305
 306   OtkWidget *prev_widget = 0;
 307
 308   for (it = _children.begin(); it != end; ++it) {
 309     tmp = *it;
 310     int x, y;
 311
 312     if (prev_widget)
 313       y = prev_widget->_rect.y() + prev_widget->_rect.height() + _bevel_width;
 314     else
 315       y = _rect.y() + _bevel_width;
 316     x = (widest - tmp->_rect.width()) / 2 + _bevel_width;
 317
 318     tmp->move(x, y);
 319
 320     prev_widget = tmp;
 321   }
 322
 323   internalResize(widest + _bevel_width * 2, height);
 324 }
 325
 326 void OtkWidget::update(void)
 327 {
 328   if (_dirty) {
 329     adjust();
 330     render();
 331     XClearWindow(OBDisplay::display, _window);
 332   }
 333   _dirty = false;
 334 }
 335
 336 void OtkWidget::internalResize(int w, int h)
 337 {
 338   assert(w > 0 && h > 0);
 339
 340   if (! _fixed_width && ! _fixed_height)
 341     resize(w, h);
 342   else if (! _fixed_width)
 343     resize(w, _rect.height());
 344   else if (! _fixed_height)
 345     resize(_rect.width(), h);
 346 }
 347
 348 void OtkWidget::addChild(OtkWidget *child, bool front)
 349 {
 350   assert(child);
 351   if (front)
 352     _children.push_front(child);
 353   else
 354     _children.push_back(child);
 355 }
 356
 357 void OtkWidget::removeChild(OtkWidget *child)
 358 {
 359   assert(child);
 360   OtkWidgetList::iterator it, end = _children.end();
 361   for (it = _children.begin(); it != end; ++it) {
 362     if ((*it) == child)
 363       break;
 364   }
 365
 366   if (it != _children.end())
 367     _children.erase(it);
 368 }
 369
 370 }