#include <lib/gui/eslider.h>
#include <lib/actions/action.h>
-eListbox::eListbox(eWidget *parent)
- :eWidget(parent), m_prev_scrollbar_page(-1), m_content_changed(false)
- , m_scrollbar(NULL), m_scrollbar_mode(showNever)
+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());
+// setContent(new eListboxStringContent());
ePtr<eActionMap> ptr;
eActionMap::getInstance(ptr);
-
- m_itemheight = 25;
- m_selection_enabled = 1;
-
ptr->bindAction("ListboxActions", 0, 0, this);
}
eListbox::~eListbox()
{
+ if (m_scrollbar)
+ delete m_scrollbar;
+
ePtr<eActionMap> ptr;
eActionMap::getInstance(ptr);
ptr->unbindAction(this, 0);
void eListbox::setScrollbarMode(int mode)
{
m_scrollbar_mode = mode;
- if ( m_scrollbar_mode == showNever && m_scrollbar )
+ if (m_scrollbar)
{
- delete m_scrollbar;
- m_scrollbar=0;
+ if (m_scrollbar_mode == showNever)
+ {
+ delete m_scrollbar;
+ m_scrollbar=0;
+ }
}
- else if (!m_scrollbar)
+ else
{
m_scrollbar = new eSlider(this);
m_scrollbar->hide();
}
}
+void eListbox::setWrapAround(bool state)
+{
+ m_enabled_wrap_around = state;
+}
+
void eListbox::setContent(iListboxContent *content)
{
+ int oldsel = m_selected;
m_content = content;
if (content)
m_content->setListbox(this);
entryReset();
+ if (oldsel == m_selected)
+ /* emit */ selectionChanged();
+}
+
+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()
+{
+ /* 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(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;
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)
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())
- {
- m_top = m_content->cursorGet() - m_items_per_page + 1;
- if (m_top < 0)
- m_top = 0;
- }
+ moveToEnd();
break;
case justCheck:
break;
/* now, look wether the current selection is out of screen */
m_selected = m_content->cursorGet();
-
while (m_selected < m_top)
{
- eDebug("%d < %d", m_selected, m_top);
m_top -= m_items_per_page;
if (m_top < 0)
m_top = 0;
}
-
while (m_selected >= m_top + m_items_per_page)
- {
- eDebug("%d >= %d + %d", 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;
- }
+
+ 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);
}
-
- if (m_scrollbar_mode != showNever)
- updateScrollBar();
}
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()
{
+ 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));
- if ( !m_scrollbar->isVisible() )
- m_scrollbar->show();
+ m_scrollbar->show();
}
- else if ( m_scrollbar_mode != showAlways )
+ else
{
- if ( m_scrollbar->isVisible() )
- {
- m_content->setSize(eSize(width, m_itemheight));
- m_scrollbar->hide(); // why this hide dont work???
- }
+ m_content->setSize(eSize(width, m_itemheight));
+ m_scrollbar->hide();
}
}
- int curVisiblePage = m_top / m_items_per_page;
- if ( m_scrollbar->isVisible() &&
- m_prev_scrollbar_page != curVisiblePage)
+ if (m_items_per_page && entries)
{
- 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 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);
+ }
}
}
m_content->cursorMove(+1);
}
- if ( m_scrollbar && m_scrollbar->isVisible() )
+ if (m_scrollbar && m_scrollbar->isVisible())
{
painter.clip(eRect(m_scrollbar->position() - ePoint(5,0), eSize(5,m_scrollbar->size().height())));
painter.clear();
void eListbox::recalcSize()
{
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;
+
+ 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);
}
void eListbox::setItemHeight(int h)
m_selected = m_content->cursorGet();
moveSelection(justCheck);
-
+
if ((m_top <= index) && (index < (m_top + m_items_per_page)))
{
/* todo, calc exact invalidation... */
}
}
-void eListbox::entryReset()
+void eListbox::entryReset(bool selectionHome)
{
- m_content_changed=true;
- m_prev_scrollbar_page=-1;
- if (m_content)
- m_content->cursorHome();
- m_top = 0;
- m_selected = 0;
+ m_content_changed = true;
+ m_prev_scrollbar_page = -1;
+
+ 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);
+ selectionChanged();
+ }
+
moveSelection(justCheck);
invalidate();
}
git.cweiske.de / enigma2.git / blobdiff