autoheightspacer.c

Go to the documentation of this file.

// -----------------------------------------------------------
class AutoHeightSpacer : ScriptedWidgetEventHandler
{
 reference bool AlignChilds;
 reference int MinHeight;
 reference int MaxHeight;
 reference int Gap;
 reference float Top;
 protected Widget m_root;
 
 void Update()
 {
 float x = 0;
 float y = 0;
 float width = 0;
 float height = 0;
 float heightOld = 0;
 float top = Top;
 float rowRight;
 float rowHeight;
 float rowWidth;
 Widget child = m_root.GetChildren();
 
 //PrintString(m_root.GetName() + ": AutoHeightSpacer::Update()");
 
 if ( !AlignChilds ) top = -100000;
 
 if (child != NULL)
 {
 // first row init
 m_root.GetScreenSize(rowWidth, height);
 rowHeight = 0;
 rowRight = rowWidth;
 
 while (child)
 {
 if (child.IsVisible() == false || child.GetName() == "SelectedContainer" || child.GetName() == "Icon")
 {
 // skip invisible widgets
 child = child.GetSibling();
 continue;
 }
 
 child.GetScreenSize(width, height);
 
 if (AlignChilds)
 {
 child.SetFlags(WidgetFlags.EXACTPOS, false);
 
 // no space left in this row, move to next one
 if (rowRight < width)
 {
 top += rowHeight;
 if ( rowHeight > 0 ) top += Gap;
 rowRight = rowWidth;
 rowHeight = 0;
 }
 
 // increase row height if necessary
 if (height > rowHeight) rowHeight = height;
 
 child.SetPos(rowWidth - rowRight, top, false);
 rowRight -= width + Gap;
 }
 else
 {
 child.GetScreenPos(x, y);
 y += height;
 if (top < y) top = y;
 }
 
 child = child.GetSibling();
 }
 
 // add last row height;
 top += rowHeight;
 
 if (AlignChilds)
 {
 height = top;
 }
 else
 {
 m_root.GetScreenPos(x, y);
 height = top - y;
 }
 }
 
 m_root.GetSize(width, heightOld);
 
 if (MaxHeight > 0 && height > MaxHeight)
 {
 height = MaxHeight;
 }
 
 if (MinHeight > height)
 {
 height = MinHeight;
 }
 
 if (Math.AbsInt(heightOld - height) > 1)
 {
 m_root.SetSize(width, height);
 }
 else if (AlignChilds)
 {
 m_root.Update();
 }
 
 return;
 }
 
 void OnWidgetScriptInit(Widget w)
 {
 m_root = w;
 m_root.SetHandler(this);
 m_root.SetFlags(WidgetFlags.VEXACTPOS);
 Update();
 }
 
 override bool OnChildRemove( Widget w, Widget child) {
 if (w == m_root)
 {
 Update();
 }
 
 return false;
 }
};