code.vuplus.com Git - vuplus_dvbapp/blob - 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::removeRootWidget(eWidget *root)
  15 {
  16         m_root.remove(root);
  17 }
  18
  19 void eWidgetDesktop::calcWidgetClipRegion(eWidget *widget, gRegion &parent_visible)
  20 {
  21                 /* start with our clip region, clipped with the parent's */
  22         if (widget->m_vis & eWidget::wVisShow)
  23         {
  24                 widget->m_visible_region = widget->m_clip_region;
  25                 widget->m_visible_region.moveBy(widget->position());
  26                 widget->m_visible_region &= parent_visible; // in parent space!
  27                         /* TODO: check transparency here! */
  28                         /* remove everything this widget will contain from parent's visible list */
  29                 parent_visible -= widget->m_visible_region; // will remove child regions too!
  30
  31                         /* now prepare for recursing to childs */
  32                 widget->m_visible_region.moveBy(-widget->position());            // now in local space
  33         } else
  34                 widget->m_visible_region = gRegion();
  35
  36         widget->m_visible_with_childs = widget->m_visible_region;
  37
  38         for (ePtrList<eWidget>::iterator i(widget->m_childs.begin()); i != widget->m_childs.end(); ++i)
  39                 calcWidgetClipRegion(*i, widget->m_visible_region);
  40 }
  41
  42 void eWidgetDesktop::recalcClipRegions()
  43 {
  44         gRegion screen = gRegion(eRect(ePoint(0, 0), m_screen_size));
  45
  46         for (ePtrList<eWidget>::iterator i(m_root.begin()); i != m_root.end(); ++i)
  47                 calcWidgetClipRegion(*i, screen);
  48 //      dumpRegion(screen);
  49 }
  50
  51 void eWidgetDesktop::invalidate(const gRegion &region)
  52 {
  53         m_dirty_region |= region;
  54 }
  55
  56 void eWidgetDesktop::paint()
  57 {
  58         gPainter painter(m_dc);
  59                 /* walk all root windows. */
  60         for (ePtrList<eWidget>::iterator i(m_root.begin()); i != m_root.end(); ++i)
  61                 i->doPaint(painter, m_dirty_region);
  62         m_dirty_region = gRegion();
  63 }
  64
  65 void eWidgetDesktop::setDC(gDC *dc)
  66 {
  67         m_dc = dc;
  68 }
  69
  70 eWidgetDesktop::eWidgetDesktop(eSize size): m_screen_size(size)
  71 {
  72 }
  73
  74 eWidgetDesktop::~eWidgetDesktop()
  75 {
  76 }
  77