How I set automatic size of combobox (comboDropList) by count text rows and text extent... without scrollbar.
I made method(down), but it is very complicated...
Exist something like in CEGUI?
void GUIScreen::setAutomaticSizeOfCombobox(const CEGUI::String& sComboBoxName, const char* sfontName)
{
CEGUI::Combobox* pCombo = static_cast<Combobox*> (getChildByName(sComboBoxName));
pCombo->getDropList()->setClippedByParent(false);
pCombo->getDropList()->setFont(sfontName);
CEGUI::Font* font = pCombo->getDropList()->getFont();
int resolutionHeight = (int)System::getSingleton().getRenderer()->getRect().d_bottom;
int maxWidth = (int)pCombo->getPixelRect().d_right -5;//-5 correction
int minWidth = (int)pCombo->getPixelSize().d_width;
int maxHeight = (int)(resolutionHeight - pCombo->getPixelRect().d_top-5);//-5 correction
//set height of combobox
int totalItemHeight = (int)pCombo->getDropList()->getTotalItemsHeight();
int editboxHeight = (int)pCombo->getEditbox()->getPixelSize().d_height;
//set corrections
int topBorderHeight = pCombo->getDropList()->getListRenderArea().d_top;
int correctionHor = pCombo->getDropList()->getListRenderArea().d_left*2; //this is correction because of DropList's borders (left,right)
int correctionVer = 0; //this is correction because of DropList's borders (top,bottom)
switch(resolutionHeight)
{
case 600:correctionVer = topBorderHeight*3;break;
case 768:correctionVer = topBorderHeight*2;break;
default: correctionVer = topBorderHeight*1.5;break;
}
int correctionScrollbar =0;
int newComboBoxHeight = totalItemHeight+correctionVer+editboxHeight;
//set height of combobox
if (newComboBoxHeight > maxHeight)
{
pCombo->setHeight(UDim(0, maxHeight));
correctionScrollbar = correctionVer*3;
}
else
{
pCombo->setHeight(UDim(0, newComboBoxHeight));
}
//set width of comboDropList
if (pCombo->getItemCount()>0)
{
int longestTextPix = (int)font->getTextExtent(pCombo->getDropList()->getListboxItemFromIndex(0)->getText());
for (int i=0; i< (int)pCombo->getItemCount(); i++)
{
int actualTextPix = (int)font->getTextExtent(pCombo->getDropList()->getListboxItemFromIndex(i)->getText());
if (actualTextPix > longestTextPix)
longestTextPix = actualTextPix;
}
longestTextPix += correctionHor + correctionScrollbar;
char buff[10];
if (longestTextPix > maxWidth)
{
itoa(maxWidth, buff, 10);
pCombo->setProperty("DropListWidth",buff);
//and set height because of Horz. scrollbar
int actuallHeight = (int)pCombo->getPixelSize().d_height;
correctionScrollbar = correctionVer*3;
pCombo->setHeight(UDim(0,actuallHeight + correctionScrollbar));
}
else if (longestTextPix > minWidth)
{
itoa(longestTextPix, buff, 10);
pCombo->setProperty("DropListWidth",buff);
}
else
{
itoa(minWidth, buff, 10);
pCombo->setProperty("DropListWidth",buff);
}
}
pCombo->setShowHorzScrollbar(false);
pCombo->setShowVertScrollbar(false);
pCombo->setAlwaysOnTop(true);
}