lib/gui/ewidgetdesktop.cpp

   1 #include <lib/gui/ewidgetdesktop.h>
   2 #include <lib/gui/ewidget.h>
   3
   4 void eWidgetDesktop::addRootWidget(eWidget *root, int top)
   5 {
   6         assert(!root->m_desktop);
   7         if (!top)
   8                 m_root.push_back(root);
   9         else
  10                 m_root.push_front(root);
  11         root->m_desktop = this;
  12 }
  13
  14 void eWidgetDesktop::calcWidgetClipRegion(eWidget *widget, gRegion &parent_visible)
  15 {
  16                 /* start with our clip region, clipped with the parent's */
  17         if (widget->m_vis & eWidget::wVisShow)
  18         {
  19                 widget->m_visible_region = widget->m_clip_region;
  20                 widget->m_visible_region.moveBy(widget->position());
  21                 widget->m_visible_region &= parent_visible; // in parent space!
  22                         /* TODO: check transparency here! */
  23                         /* remove everything this widget will contain from parent's visible list */
  24                 parent_visible -= widget->m_visible_region; // will remove child regions too!
  25
  26                         /* now prepare for recursing to childs */
  27                 widget->m_visible_region.moveBy(-widget->position());            // now in local space
  28         } else
  29                 widget->m_visible_region = gRegion();
  30
  31         widget->m_visible_with_childs = widget->m_visible_region;
  32
  33         for (ePtrList<eWidget>::iterator i(widget->m_childs.begin()); i != widget->m_childs.end(); ++i)
  34                 calcWidgetClipRegion(*i, widget->m_visible_region);
  35 }
  36
  37 void eWidgetDesktop::recalcClipRegions()
  38 {
  39         gRegion screen = gRegion(eRect(ePoint(0, 0), m_screen_size));
  40
  41         for (ePtrList<eWidget>::iterator i(m_root.begin()); i != m_root.end(); ++i)
  42                 calcWidgetClipRegion(*i, screen);
  43 //      dumpRegion(screen);
  44 }
  45
  46 void eWidgetDesktop::invalidate(const gRegion &region)
  47 {
  48         m_dirty_region |= region;
  49 }
  50
  51 void eWidgetDesktop::paint()
  52 {
  53         gPainter painter(m_dc);
  54                 /* walk all root windows. */
  55         for (ePtrList<eWidget>::iterator i(m_root.begin()); i != m_root.end(); ++i)
  56                 i->doPaint(painter, m_dirty_region);
  57         m_dirty_region = gRegion();
  58 }
  59
  60 void eWidgetDesktop::setDC(gDC *dc)
  61 {
  62         m_dc = dc;
  63 }
  64
  65 eWidgetDesktop::eWidgetDesktop(eSize size): m_screen_size(size)
  66 {
  67 }
  68
  69 eWidgetDesktop::~eWidgetDesktop()
  70 {
  71 }
  72