add eEnv::resolve() to resolve install paths at runtime

[enigma2.git] / lib / gui / elistbox.cpp

diff --git a/lib/gui/elistbox.cpp b/lib/gui/elistbox.cpp
index cfb3d5b456a90280f9f631d3601bdba8fcffc5d3..c13114e83ebbf8bc93df4571ef0e6029a7b621d2 100644 (file)
--- a/lib/gui/elistbox.cpp
+++ b/lib/gui/elistbox.cpp
@@ -8,6 +8,7 @@ eListbox::eListbox(eWidget *parent) :
        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)
 {
+       memset(&m_style, 0, sizeof(m_style));
 //     setContent(new eListboxStringContent());
 
        ePtr<eActionMap> ptr;
@@ -53,13 +54,10 @@ void eListbox::setWrapAround(bool 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()
@@ -78,6 +76,8 @@ bool eListbox::atEnd()
 
 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? */
@@ -93,7 +93,7 @@ void eListbox::moveToEnd()
        }
 }
 
-void eListbox::moveSelection(int dir)
+void eListbox::moveSelection(long dir)
 {
                /* refuse to do anything without a valid list. */
        if (!m_content)
@@ -220,7 +220,6 @@ void eListbox::moveSelection(int dir)
    /* 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);
        }
 }
@@ -280,7 +279,7 @@ void eListbox::updateScrollBar()
                        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);
@@ -288,6 +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)
@@ -298,7 +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);
                
@@ -312,7 +316,7 @@ int eListbox::event(int event, void *data, void *data2)
                
                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)
                {
                        gRegion entry_clip_rect = paint_region & entryrect;
@@ -321,7 +325,7 @@ int eListbox::event(int event, void *data, void *data2)
                                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 behaviour of any
+                                  this shouldn't change the behavior of any
                                   well behaving content, so it would just
                                   degrade performance without any gain.) */
 
@@ -350,7 +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;
@@ -363,7 +367,8 @@ 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. */
@@ -391,7 +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)
@@ -413,10 +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)))
        {
@@ -438,6 +451,7 @@ void eListbox::entryReset(bool selectionHome)
 {
        m_content_changed = true;
        m_prev_scrollbar_page = -1;
+       int oldsel;
 
        if (selectionHome)
        {
@@ -454,9 +468,63 @@ void eListbox::entryReset(bool selectionHome)
                else
                        m_selected = 0;
                m_content->cursorSet(m_selected);
-               selectionChanged();
        }
        
+       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<gPixmap> &pm)
+{
+       m_style.m_background = pm;
+}
+
+void eListbox::setSelectionPicture(ePtr<gPixmap> &pm)
+{
+       m_style.m_selection = pm;
+}
+
+void eListbox::invalidate(const gRegion &region)
+{
+       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;
+}