X-Git-Url: https://git.cweiske.de/enigma2.git/blobdiff_plain/d63d2c3c6cbbd574dda4f8b00ebe6c661735edd5..6f55cd01cf53108209c299e66c2fe189dc61a344:/lib/gui/ewidget.cpp diff --git a/lib/gui/ewidget.cpp b/lib/gui/ewidget.cpp index e69de29b..3bc6e663 100644 --- a/lib/gui/ewidget.cpp +++ b/lib/gui/ewidget.cpp @@ -0,0 +1,345 @@ +#include +#include + +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_z_position = 0; + + m_client_offset = eSize(0, 0); + + if (m_parent) + m_vis = wVisShow; + + if (m_parent) + { + insertIntoParent(); + 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; + + /* ?? what about native move support? */ + invalidate(); + + 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; + if (!root) + return; + 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::setZPosition(int z) +{ + m_z_position = z; + if (!m_parent) + return; + + m_parent->m_childs.remove(this); + + insertIntoParent(); /* now at the new Z position */ +} + +void eWidget::setTransparent(int transp) +{ + if (transp) + m_vis |= wVisTransparent; + else + m_vis &=~wVisTransparent; +} + +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; + + /* tell all childs that the parent is not anymore existing */ + ePtrList::iterator i(m_childs.begin()); + while (i != m_childs.end()) + { + (*i)->parentRemoved(); + i = m_childs.erase(i); + } +} + +void eWidget::insertIntoParent() +{ + ePtrList::iterator i = m_parent->m_childs.begin(); + + for(;;) + { + if ((i == m_parent->m_childs.end()) || (i->m_z_position > m_z_position)) + { + m_parent->m_childs.insert(i, this); + return; + } + ++i; + } +} + +void eWidget::doPaint(gPainter &painter, const gRegion &r) +{ + if (m_visible_with_childs.empty()) + return; + + gRegion region = r, childs = r; + /* we were in parent's space, now we are in local space */ + region.moveBy(-position()); + + painter.moveOffset(position()); + + /* check if there's anything for us to paint */ + region &= m_visible_region; + + if (!region.empty()) + { + painter.resetClip(region); + event(evtPaint, ®ion, &painter); + } + + childs.moveBy(-position()); + /* walk all childs */ + for (ePtrList::iterator i(m_childs.begin()); i != m_childs.end(); ++i) + i->doPaint(painter, childs); + + 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); +} + +void eWidget::parentRemoved() +{ + m_parent = 0; +} + +int eWidget::event(int event, void *data, void *data2) +{ + switch (event) + { + case evtPaint: + { + gPainter &painter = *(gPainter*)data2; + +// eDebug("eWidget::evtPaint"); +// dumpRegion(*(gRegion*)data); + if (!isTransparent()) + { + if (!m_have_background_color) + { + ePtr style; + if (!getStyle(style)) + style->paintBackground(painter, ePoint(0, 0), size()); + } else + { + painter.setBackgroundColor(m_background_color); + painter.clear(); + } + } else + { + if (m_have_background_color) + painter.setBackgroundColor(m_background_color); + } + break; + } + case evtKey: + break; + case evtWillChangeSize: + m_size = *static_cast(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); +} +