+#include <lib/gui/ewidget.h>
+#include <lib/gui/ewidgetdesktop.h>
+
+extern void dumpRegion(const gRegion ®ion);
+
+eWidget::eWidget(eWidget *parent): m_animation(this), m_parent(parent ? parent->child() : 0)
+{
+ m_vis = 0;
+ m_desktop = 0;
+ m_have_background_color = 0;
+
+ m_client_offset = eSize(0, 0);
+
+ if (m_parent)
+ m_vis = wVisShow;
+
+ if (m_parent)
+ {
+ m_parent->m_childs.push_back(this);
+ m_parent->getStyle(m_style);
+ }
+
+ m_current_focus = 0;
+ m_focus_owner = 0;
+}
+
+void eWidget::move(ePoint pos)
+{
+ pos = pos + m_client_offset;
+
+ if (m_position == pos)
+ return;
+
+ m_position = pos;
+
+ event(evtChangedPosition);
+ recalcClipRegionsWhenVisible();
+
+ /* try native move if supported. */
+ if ((m_vis & wVisShow) && ((!m_desktop) || m_desktop->movedWidget(this)))
+ invalidate();
+}
+
+void eWidget::resize(eSize size)
+{
+ /* same strategy as with move: we first check if
+ the size changed at all, and if it did, we
+ invalidate both the old and new area.
+ TODO: check if either the old or new area
+ fits into the other completely, and invalidate
+ only once. */
+ eSize old_size = m_size;
+ eSize old_offset = m_client_offset;
+ m_client_offset = eSize(0, 0);
+ event(evtWillChangeSize, &size, &m_client_offset);
+ if (old_size == m_size)
+ return;
+
+ move(position() - old_offset);
+
+ invalidate();
+ event(evtChangedSize);
+ recalcClipRegionsWhenVisible();
+ invalidate();
+}
+
+void eWidget::invalidate(const gRegion ®ion)
+{
+ /* we determine the area to redraw, and re-position this
+ area to the absolute position, and then call the
+ desktop's invalidate() with that, which adds this
+ area into the dirty region. */
+ gRegion res = m_visible_with_childs;
+ if (region.valid())
+ res &= region;
+
+ if (res.empty())
+ return;
+
+ eWidget *root = this;
+ ePoint abspos = position();
+ while (root && !root->m_desktop)
+ {
+ root = root->m_parent;
+ assert(root);
+ abspos += root->position();
+ }
+
+ res.moveBy(abspos);
+// eDebug("region to invalidate:");
+// dumpRegion(res);
+ root->m_desktop->invalidate(res);
+}
+
+void eWidget::show()
+{
+ if (m_vis & wVisShow)
+ return;
+
+ m_vis |= wVisShow;
+
+ /* TODO: optimize here to only recalc what's required. possibly merge with hide. */
+ eWidget *root = this;
+ ePoint abspos = position();
+ while (root && !root->m_desktop)
+ {
+ root = root->m_parent;
+ assert(root);
+ abspos += root->position();
+ }
+
+ root->m_desktop->recalcClipRegions(root);
+
+ gRegion abs = m_visible_with_childs;
+ abs.moveBy(abspos);
+ root->m_desktop->invalidate(abs);
+}
+
+void eWidget::hide()
+{
+ /* TODO: when hiding an upper level widget, widgets get hidden but keep the */
+ /* wVisShow flag (because when the widget is shown again, the widgets must */
+ /* become visible again. */
+ if (!(m_vis & wVisShow))
+ return;
+ m_vis &= ~wVisShow;
+
+ /* this is a workaround to the above problem. when we are in the delete phase,
+ don't hide childs. */
+ if (!(m_parent || m_desktop))
+ return;
+
+ /* TODO: optimize here to only recalc what's required. possibly merge with show. */
+ eWidget *root = this;
+ ePoint abspos = position();
+ while (root && !root->m_desktop)
+ {
+ root = root->m_parent;
+ abspos += root->position();
+ }
+ assert(root->m_desktop);
+
+ gRegion abs = m_visible_with_childs;
+ abs.moveBy(abspos);
+
+ root->m_desktop->recalcClipRegions(root);
+ root->m_desktop->invalidate(abs);
+}
+
+void eWidget::destruct()
+{
+ if (m_parent)
+ m_parent->m_childs.remove(this);
+ delete this;
+}
+
+void eWidget::setBackgroundColor(const gRGB &col)
+{
+ m_background_color = col;
+ m_have_background_color = 1;
+}
+
+void eWidget::clearBackgroundColor()
+{
+ m_have_background_color = 0;
+}
+
+void eWidget::mayKillFocus()
+{
+ setFocus(0);
+ /* when we have the focus, remove it first. */
+ if (m_focus_owner)
+ m_focus_owner->setFocus(0);
+}
+
+eWidget::~eWidget()
+{
+ hide();
+
+ if (m_parent)
+ m_parent->m_childs.remove(this);
+
+ m_parent = 0;
+
+ /* destroy all childs */
+ ePtrList<eWidget>::iterator i(m_childs.begin());
+ while (i != m_childs.end())
+ {
+ (*i)->m_parent = 0;
+ delete *i;
+ i = m_childs.erase(i);
+ }
+}
+
+void eWidget::doPaint(gPainter &painter, const gRegion &r)
+{
+ if (m_visible_with_childs.empty())
+ return;
+
+ gRegion region = r;
+ /* we were in parent's space, now we are in local space */
+ region.moveBy(-position());
+
+ painter.moveOffset(position());
+ /* walk all childs */
+ for (ePtrList<eWidget>::iterator i(m_childs.begin()); i != m_childs.end(); ++i)
+ i->doPaint(painter, region);
+
+ /* check if there's anything for us to paint */
+ region &= m_visible_region;
+
+ if (!region.empty())
+ {
+ painter.resetClip(region);
+ event(evtPaint, ®ion, &painter);
+ }
+
+ painter.moveOffset(-position());
+}
+
+void eWidget::recalcClipRegionsWhenVisible()
+{
+ eWidget *t = this;
+ do
+ {
+ if (!(t->m_vis & wVisShow))
+ break;
+ if (t->m_desktop)
+ {
+ t->m_desktop->recalcClipRegions(t);
+ break;
+ }
+ t = t->m_parent;
+ assert(t);
+ } while(1);
+}
+
+int eWidget::event(int event, void *data, void *data2)
+{
+ switch (event)
+ {
+ case evtPaint:
+ {
+ gPainter &painter = *(gPainter*)data2;
+
+// eDebug("eWidget::evtPaint");
+// dumpRegion(*(gRegion*)data);
+ if (!m_have_background_color)
+ {
+ ePtr<eWindowStyle> style;
+ if (!getStyle(style))
+ style->paintBackground(painter, ePoint(0, 0), size());
+ } else
+ {
+ painter.setBackgroundColor(m_background_color);
+ painter.clear();
+ }
+ break;
+ }
+ case evtKey:
+ break;
+ case evtWillChangeSize:
+ m_size = *static_cast<eSize*>(data);
+ break;
+ case evtChangedSize:
+ {
+ m_clip_region = gRegion(eRect(ePoint(0, 0), m_size));
+ break;
+ }
+ case evtFocusGot:
+ m_focus_owner = (eWidget*)data;
+ break;
+ case evtFocusLost:
+ m_focus_owner = 0;
+ break;
+ default:
+ return -1;
+ }
+ return 0;
+}
+
+void eWidget::setFocus(eWidget *focus)
+{
+ if (m_current_focus)
+ m_current_focus->event(evtFocusLost, this);
+
+ m_current_focus = focus;
+
+ if (m_current_focus)
+ m_current_focus->event(evtFocusGot, this);
+}
+
git.cweiske.de / enigma2.git / blobdiff