X-Git-Url: https://git.cweiske.de/enigma2.git/blobdiff_plain/3af66122574386a2856e83ba9c5d73d27a6f3710..ce507f3fbf0e8491aaea32e1322996f23ab316f2:/lib/gui/elistbox.cpp diff --git a/lib/gui/elistbox.cpp b/lib/gui/elistbox.cpp index a6fe45f1..9b876c8c 100644 --- a/lib/gui/elistbox.cpp +++ b/lib/gui/elistbox.cpp @@ -1,14 +1,20 @@ #include #include +#include #include -eListbox::eListbox(eWidget *parent): eWidget(parent) +eListbox::eListbox(eWidget *parent) + :eWidget(parent), m_prev_scrollbar_page(-1), m_content_changed(false) + , m_scrollbar_mode(showNever), m_scrollbar(NULL) { setContent(new eListboxStringContent()); ePtr ptr; eActionMap::getInstance(ptr); + m_itemheight = 25; + m_selection_enabled = 1; + ptr->bindAction("ListboxActions", 0, 0, this); } @@ -19,6 +25,27 @@ eListbox::~eListbox() ptr->unbindAction(this, 0); } +void eListbox::setScrollbarMode(int mode) +{ + m_scrollbar_mode = mode; + if ( m_scrollbar ) + { + if ( m_scrollbar_mode == showNever ) + { + delete m_scrollbar; + m_scrollbar=0; + } + } + else + { + m_scrollbar = new eSlider(this); + m_scrollbar->hide(); + m_scrollbar->setBorderWidth(1); + m_scrollbar->setOrientation(eSlider::orVertical); + m_scrollbar->setRange(0,100); + } +} + void eListbox::setContent(iListboxContent *content) { m_content = content; @@ -32,6 +59,10 @@ void eListbox::moveSelection(int dir) /* refuse to do anything without a valid list. */ if (!m_content) return; + + /* if our list does not have one entry, don't do anything. */ + if (!m_items_per_page) + return; /* we need the old top/sel to see what we have to redraw */ int oldtop = m_top; @@ -49,17 +80,43 @@ void eListbox::moveSelection(int dir) if (!m_content->cursorValid()) m_content->cursorMove(-1); break; + case pageUp: + if (m_content->cursorGet() >= m_items_per_page) + { + m_content->cursorMove(-m_items_per_page); + m_top -= m_items_per_page; + if (m_top < 0) + m_top = 0; + } else + { + m_top = 0; + m_content->cursorHome(); + } + break; case moveTop: m_content->cursorHome(); m_top = 0; /* align with top, speeds up process */ break; + + case pageDown: + m_content->cursorMove(m_items_per_page); + if (m_content->cursorValid()) + break; + /* fall through */ case moveEnd: /* move to last existing one ("end" is already invalid) */ m_content->cursorEnd(); m_content->cursorMove(-1); - - m_top = m_content->cursorGet() - m_items_per_page + 1; - if (m_top < 0) - m_top = 0; + /* current selection invisible? */ + if (m_top + m_items_per_page <= m_content->cursorGet()) + { + int rest = m_content->size() % m_items_per_page; + if ( rest ) + m_top = m_content->cursorGet() - rest + 1; + else + m_top = m_content->cursorGet() - m_items_per_page + 1; + if (m_top < 0) + m_top = 0; + } break; case justCheck: break; @@ -71,17 +128,18 @@ void eListbox::moveSelection(int dir) /* now, look wether the current selection is out of screen */ m_selected = m_content->cursorGet(); - - if (m_selected < m_top) + + while (m_selected < m_top) { m_top -= m_items_per_page; if (m_top < 0) m_top = 0; - } else if (m_selected >= m_top + m_items_per_page) - { - /* m_top should be always valid here as it's selected */ - m_top += m_items_per_page; } + while (m_selected >= m_top + m_items_per_page) + /* m_top should be always valid here as it's selected */ + m_top += m_items_per_page; + + updateScrollBar(); if (m_top != oldtop) invalidate(); @@ -96,6 +154,59 @@ void eListbox::moveSelection(int dir) } } +void eListbox::moveSelectionTo(int index) +{ + m_content->cursorHome(); + m_content->cursorMove(index); + moveSelection(justCheck); +} + +void eListbox::updateScrollBar() +{ + if (!m_content || m_scrollbar_mode == showNever ) + return; + int entries = m_content->size(); + if ( m_content_changed ) + { + int width = size().width(); + int height = size().height(); + m_content_changed = false; + if ( entries > m_items_per_page || m_scrollbar_mode == showAlways ) + { + int sbarwidth=width/16; + if ( sbarwidth < 18 ) + sbarwidth=18; + if ( sbarwidth > 22 ) + sbarwidth=22; + m_scrollbar->move(ePoint(width-sbarwidth, 0)); + m_scrollbar->resize(eSize(sbarwidth, height)); + m_content->setSize(eSize(width-sbarwidth-5, m_itemheight)); + m_scrollbar->show(); + } + else + { + m_content->setSize(eSize(width, m_itemheight)); + m_scrollbar->hide(); + } + } + if ( m_items_per_page && entries ) + { + int curVisiblePage = m_top / m_items_per_page; + if (m_prev_scrollbar_page != curVisiblePage) + { + m_prev_scrollbar_page = curVisiblePage; + int pages = entries / m_items_per_page; + if ( (pages*m_items_per_page) < entries ) + ++pages; + int start=(m_top*100)/(pages*m_items_per_page); + int vis=(m_items_per_page*100)/(pages*m_items_per_page); + if (vis < 3) + vis=3; + m_scrollbar->setStartEnd(start,start+vis); + } + } +} + int eListbox::event(int event, void *data, void *data2) { switch (event) @@ -107,7 +218,6 @@ int eListbox::event(int event, void *data, void *data2) if (!m_content) return eWidget::event(event, data, data2); assert(m_content); - recalcSize(); // move to event getStyle(style); @@ -119,19 +229,34 @@ int eListbox::event(int event, void *data, void *data2) m_content->cursorSave(); m_content->cursorMove(m_top - m_selected); - for (int y = 0, i = 0; i < m_items_per_page; y += m_itemheight, ++i) + for (int y = 0, i = 0; i <= m_items_per_page; y += m_itemheight, ++i) { - m_content->paint(painter, *style, ePoint(0, y), m_selected == m_content->cursorGet()); + m_content->paint(painter, *style, ePoint(0, y), m_selected == m_content->cursorGet() && m_content->size() && m_selection_enabled); m_content->cursorMove(+1); } - + + if ( m_scrollbar && m_scrollbar->isVisible() ) + { + painter.clip(eRect(m_scrollbar->position() - ePoint(5,0), eSize(5,m_scrollbar->size().height()))); + painter.clear(); + painter.clippop(); + } + m_content->cursorRestore(); - + return 0; } + case evtChangedSize: + recalcSize(); + return eWidget::event(event, data, data2); + case evtAction: - moveSelection((int)data2); - return 1; + if (isVisible()) + { + moveSelection((int)data2); + return 1; + } + return 0; default: return eWidget::event(event, data, data2); } @@ -139,9 +264,28 @@ int eListbox::event(int event, void *data, void *data2) void eListbox::recalcSize() { - m_itemheight = 20; + m_content_changed=true; + m_prev_scrollbar_page=-1; m_content->setSize(eSize(size().width(), m_itemheight)); m_items_per_page = size().height() / m_itemheight; + updateScrollBar(); +} + +void eListbox::setItemHeight(int h) +{ + if (h) + m_itemheight = h; + else + m_itemheight = 20; + recalcSize(); +} + +void eListbox::setSelectionEnable(int en) +{ + if (m_selection_enabled == en) + return; + m_selection_enabled = en; + entryChanged(m_selected); /* redraw current entry */ } void eListbox::entryAdded(int index) @@ -172,7 +316,7 @@ void eListbox::entryRemoved(int index) m_selected = m_content->cursorGet(); moveSelection(justCheck); - + if ((m_top <= index) && (index < (m_top + m_items_per_page))) { /* todo, calc exact invalidation... */ @@ -191,9 +335,13 @@ void eListbox::entryChanged(int index) void eListbox::entryReset() { + m_content_changed=true; + m_prev_scrollbar_page=-1; if (m_content) m_content->cursorHome(); m_top = 0; m_selected = 0; + moveSelection(justCheck); + updateScrollBar(); invalidate(); }