X-Git-Url: https://git.cweiske.de/enigma2.git/blobdiff_plain/7eab308715ea1130166915574e3b691e08eb4482..7373f39fe2ebe1b5007ed56ddd86d9ce0ad3efb7:/lib/gui/elistbox.cpp diff --git a/lib/gui/elistbox.cpp b/lib/gui/elistbox.cpp index 21394de5..c13114e8 100644 --- a/lib/gui/elistbox.cpp +++ b/lib/gui/elistbox.cpp @@ -3,18 +3,16 @@ #include #include -eListbox::eListbox(eWidget *parent) - :eWidget(parent), m_prev_scrollbar_page(-1), m_content_changed(false) - , m_scrollbar_mode(showNever), m_scrollbar(NULL) +eListbox::eListbox(eWidget *parent) : + eWidget(parent), m_scrollbar_mode(showNever), m_prev_scrollbar_page(-1), + m_content_changed(false), m_enabled_wrap_around(false), m_top(0), m_selected(0), m_itemheight(25), + m_items_per_page(0), m_selection_enabled(1), m_scrollbar(NULL) { - setContent(new eListboxStringContent()); + memset(&m_style, 0, sizeof(m_style)); +// setContent(new eListboxStringContent()); ePtr ptr; eActionMap::getInstance(ptr); - - m_itemheight = 25; - m_selection_enabled = 1; - ptr->bindAction("ListboxActions", 0, 0, this); } @@ -31,9 +29,9 @@ eListbox::~eListbox() void eListbox::setScrollbarMode(int mode) { m_scrollbar_mode = mode; - if ( m_scrollbar ) + if (m_scrollbar) { - if ( m_scrollbar_mode == showNever ) + if (m_scrollbar_mode == showNever) { delete m_scrollbar; m_scrollbar=0; @@ -49,6 +47,11 @@ void eListbox::setScrollbarMode(int mode) } } +void eListbox::setWrapAround(bool state) +{ + m_enabled_wrap_around = state; +} + void eListbox::setContent(iListboxContent *content) { m_content = content; @@ -57,31 +60,73 @@ void eListbox::setContent(iListboxContent *content) entryReset(); } -void eListbox::moveSelection(int dir) +bool eListbox::atBegin() +{ + if (m_content && !m_selected) + return true; + return false; +} + +bool eListbox::atEnd() +{ + if (m_content && m_content->size() == m_selected+1) + return true; + return false; +} + +void eListbox::moveToEnd() +{ + if (!m_content) + return; + /* move to last existing one ("end" is already invalid) */ + m_content->cursorEnd(); m_content->cursorMove(-1); + /* 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; + } +} + +void eListbox::moveSelection(long 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; int oldsel = m_selected; - /* first, move cursor */ switch (dir) { case moveUp: + { m_content->cursorMove(-1); + if (m_enabled_wrap_around && oldsel == m_content->cursorGet()) // must wrap around ? + moveToEnd(); break; + } case moveDown: m_content->cursorMove(1); - /* ok - we could have reached the end. we just go one back then. */ + /* ok - we could have reached the end. So we do wrap around. */ if (!m_content->cursorValid()) - m_content->cursorMove(-1); + { + if (m_enabled_wrap_around) + { + m_top = 0; + m_content->cursorHome(); + } + else + m_content->cursorMove(-1); + } break; case pageUp: if (m_content->cursorGet() >= m_items_per_page) @@ -100,38 +145,59 @@ void eListbox::moveSelection(int dir) 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); - /* 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; - } + moveToEnd(); break; case justCheck: break; } + if (m_content->cursorValid() && !m_content->currentCursorSelectable()) + { + /* ok, our cursor position is valid (i.e. in list), but not selectable. */ + + /* when moving up, continue until we found a valid position. */ + if ((dir == moveUp) || (dir == pageDown)) + { + while (m_content->cursorGet()) + { + m_content->cursorMove(-1); + if (m_content->currentCursorSelectable()) + { + break; + } + } + } else + { + /* else move down */ + while (m_content->cursorValid()) + { + m_content->cursorMove(+1); + if (m_content->currentCursorSelectable()) + { + break; + } + } + + if (!m_content->cursorValid()) + m_content->cursorMove(-1); + } + + if (!m_content->currentCursorSelectable()) + m_content->cursorSet(oldsel); + } + /* note that we could be on an invalid cursor position, but we don't care. this only happens on empty lists, and should have almost no side effects. */ /* now, look wether the current selection is out of screen */ m_selected = m_content->cursorGet(); - while (m_selected < m_top) { m_top -= m_items_per_page; @@ -142,26 +208,37 @@ void eListbox::moveSelection(int dir) /* m_top should be always valid here as it's selected */ m_top += m_items_per_page; + if (oldsel != m_selected) + /* emit */ selectionChanged(); + updateScrollBar(); if (m_top != oldtop) invalidate(); else if (m_selected != oldsel) { - - /* redraw the old and newly selected */ + /* redraw the old and newly selected */ gRegion inv = eRect(0, m_itemheight * (m_selected-m_top), size().width(), m_itemheight); inv |= eRect(0, m_itemheight * (oldsel-m_top), size().width(), m_itemheight); - invalidate(inv); } } void eListbox::moveSelectionTo(int index) { - m_content->cursorHome(); - m_content->cursorMove(index); - moveSelection(justCheck); + if (m_content) + { + m_content->cursorHome(); + m_content->cursorMove(index); + moveSelection(justCheck); + } +} + +int eListbox::getCurrentIndex() +{ + if (m_content && m_content->cursorValid()) + return m_content->cursorGet(); + return 0; } void eListbox::updateScrollBar() @@ -169,18 +246,18 @@ void eListbox::updateScrollBar() if (!m_content || m_scrollbar_mode == showNever ) return; int entries = m_content->size(); - if ( m_content_changed ) + 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 ) + if (entries > m_items_per_page || m_scrollbar_mode == showAlways) { int sbarwidth=width/16; - if ( sbarwidth < 18 ) - sbarwidth=18; - if ( sbarwidth > 22 ) - sbarwidth=22; + 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)); @@ -192,17 +269,17 @@ void eListbox::updateScrollBar() m_scrollbar->hide(); } } - if ( m_items_per_page && entries ) + 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 ) + 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); + int vis=(m_items_per_page*100+pages*m_items_per_page-1)/(pages*m_items_per_page); if (vis < 3) vis=3; m_scrollbar->setStartEnd(start,start+vis); @@ -210,6 +287,11 @@ void eListbox::updateScrollBar() } } +int eListbox::getEntryTop() +{ + return (m_selected - m_top) * m_itemheight; +} + int eListbox::event(int event, void *data, void *data2) { switch (event) @@ -220,7 +302,7 @@ int eListbox::event(int event, void *data, void *data2) if (!m_content) return eWidget::event(event, data, data2); - assert(m_content); + ASSERT(m_content); getStyle(style); @@ -232,14 +314,29 @@ int eListbox::event(int event, void *data, void *data2) m_content->cursorSave(); m_content->cursorMove(m_top - m_selected); + gRegion entryrect = eRect(0, 0, size().width(), m_itemheight); + const gRegion &paint_region = *(gRegion*)data; + 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->size() && m_selection_enabled); + gRegion entry_clip_rect = paint_region & entryrect; + + if (!entry_clip_rect.empty()) + m_content->paint(painter, *style, ePoint(0, y), m_selected == m_content->cursorGet() && m_content->size() && m_selection_enabled); + + /* (we could clip with entry_clip_rect, but + this shouldn't change the behavior of any + well behaving content, so it would just + degrade performance without any gain.) */ + m_content->cursorMove(+1); + entryrect.moveBy(ePoint(0, m_itemheight)); } - if ( m_scrollbar && m_scrollbar->isVisible() ) + // clear/repaint empty/unused space between scrollbar and listboxentrys + if (m_scrollbar && m_scrollbar->isVisible()) { + style->setStyle(painter, eWindowStyle::styleListboxNormal); painter.clip(eRect(m_scrollbar->position() - ePoint(5,0), eSize(5,m_scrollbar->size().height()))); painter.clear(); painter.clippop(); @@ -249,6 +346,7 @@ int eListbox::event(int event, void *data, void *data2) return 0; } + case evtChangedSize: recalcSize(); return eWidget::event(event, data, data2); @@ -256,7 +354,7 @@ int eListbox::event(int event, void *data, void *data2) case evtAction: if (isVisible()) { - moveSelection((int)data2); + moveSelection((long)data2); return 1; } return 0; @@ -269,8 +367,13 @@ void eListbox::recalcSize() { m_content_changed=true; m_prev_scrollbar_page=-1; - m_content->setSize(eSize(size().width(), m_itemheight)); + if (m_content) + m_content->setSize(eSize(size().width(), m_itemheight)); m_items_per_page = size().height() / m_itemheight; + + if (m_items_per_page < 0) /* TODO: whyever - our size could be invalid, or itemheigh could be wrongly specified. */ + m_items_per_page = 0; + moveSelection(justCheck); } @@ -293,7 +396,9 @@ void eListbox::setSelectionEnable(int en) void eListbox::entryAdded(int index) { - /* manage our local pointers. when the entry was added before the current position, we have to advance. */ + if (m_content && (m_content->size() % m_items_per_page) == 1) + m_content_changed=true; + /* manage our local pointers. when the entry was added before the current position, we have to advance. */ /* we need to check <= - when the new entry has the (old) index of the cursor, the cursor was just moved down. */ if (index <= m_selected) @@ -315,10 +420,16 @@ void eListbox::entryAdded(int index) void eListbox::entryRemoved(int index) { - if (index == m_selected) + if (m_content && !(m_content->size() % m_items_per_page)) + m_content_changed=true; + + if (index == m_selected && m_content) m_selected = m_content->cursorGet(); - moveSelection(justCheck); + if (m_content && m_content->cursorGet() >= m_content->size()) + moveSelection(moveUp); + else + moveSelection(justCheck); if ((m_top <= index) && (index < (m_top + m_items_per_page))) { @@ -336,17 +447,84 @@ void eListbox::entryChanged(int index) } } -void eListbox::entryReset(bool cursorHome) +void eListbox::entryReset(bool selectionHome) { - m_content_changed=true; - m_prev_scrollbar_page=-1; - if ( cursorHome ) + m_content_changed = true; + m_prev_scrollbar_page = -1; + int oldsel; + + if (selectionHome) { if (m_content) m_content->cursorHome(); m_top = 0; m_selected = 0; } + + if (m_content && (m_selected >= m_content->size())) + { + if (m_content->size()) + m_selected = m_content->size() - 1; + else + m_selected = 0; + m_content->cursorSet(m_selected); + } + + oldsel = m_selected; moveSelection(justCheck); + /* if oldsel != m_selected, selectionChanged was already + emitted in moveSelection. we want it in any case, so otherwise, + emit it now. */ + if (oldsel == m_selected) + /* emit */ selectionChanged(); invalidate(); } + +void eListbox::setBackgroundColor(gRGB &col) +{ + m_style.m_background_color = col; + m_style.m_background_color_set = 1; +} + +void eListbox::setBackgroundColorSelected(gRGB &col) +{ + m_style.m_background_color_selected = col; + m_style.m_background_color_selected_set = 1; +} + +void eListbox::setForegroundColor(gRGB &col) +{ + m_style.m_foreground_color = col; + m_style.m_foreground_color_set = 1; +} + +void eListbox::setForegroundColorSelected(gRGB &col) +{ + m_style.m_foreground_color_selected = col; + m_style.m_foreground_color_selected_set = 1; +} + +void eListbox::setBackgroundPicture(ePtr &pm) +{ + m_style.m_background = pm; +} + +void eListbox::setSelectionPicture(ePtr &pm) +{ + m_style.m_selection = pm; +} + +void eListbox::invalidate(const gRegion ®ion) +{ + gRegion tmp(region); + if (m_content) + m_content->updateClip(tmp); + eWidget::invalidate(tmp); +} + +struct eListboxStyle *eListbox::getLocalStyle(void) +{ + /* transparency is set directly in the widget */ + m_style.m_transparent_background = isTransparent(); + return &m_style; +}