| public SetVisualSize ( float width, float height ) : void | ||
| width | float | |
| height | float | |
| return | void | |
public void Arrange()
{
int j = flexItems.Count;
float curX = 0;
float curY = 0;
float availableW = AvaliableParentWidth;
for (int i = 0; i < j; ++i)
{
FlexItem flexItem = flexItems[i];
CssBox box = flexItem.Box;
box.SetLocation(curX, curY);
curX += flexItem.PlanWidth;
}
//-----------------------------------------------
if (curX < availableW)
{
//find box that can expand
List <FlexItem> widthResizableItems = new List <FlexItem>();
for (int i = 0; i < j; ++i)
{
FlexItem flexItem = flexItems[i];
if (!flexItem.ReachMaxHeight)
{
widthResizableItems.Add(flexItem);
}
}
//remain some space
//so expand it
if ((j = widthResizableItems.Count) > 0)
{
//how to expand it
//1. check grow feature
int totalExpandCount = 0;
for (int i = j - 1; i >= 0; --i)
{
totalExpandCount += widthResizableItems[i].FlexGrow;
}
if (totalExpandCount > 0)
{
float remainingW = availableW - curX;
float onePart = remainingW / totalExpandCount;
//add to plan width
for (int i = j - 1; i >= 0; --i)
{
widthResizableItems[i].PlanWidth += (onePart * widthResizableItems[i].FlexGrow);
}
//then rearrange the line again
curX = 0;//reset
for (int i = 0; i < j; ++i)
{
FlexItem flexItem = flexItems[i];
CssBox box = flexItem.Box;
box.SetLocation(curX, curY);
box.SetVisualSize(flexItem.PlanWidth, flexItem.PlanHeight);
curX += flexItem.PlanWidth;
}
}
}
}
else if (curX > availableW)
{
//use more than available width
//find if it can shrink?
}
this.LineWidthAfterArrange = curX;
//-----------------------------------------------
//check for height
float maxHeight = 0;
for (int i = flexItems.Count - 1; i >= 0; --i)
{
FlexItem flexItem = flexItems[i];
CssBox box = flexItem.Box;
if (maxHeight < box.VisualHeight)
{
maxHeight = box.VisualHeight;
}
}
if (maxHeight < this.AvaliableParentHeight)
{
//expand item or shrink
if (this.flexCssBox.Height.IsEmptyOrAuto)
{
//autoheight
//then set new height for parent
this.LineHeightAfterArrange = maxHeight;
}
else
{
//try expand flex item
for (int i = flexItems.Count - 1; i >= 0; --i)
{
FlexItem flexItem = flexItems[i];
if (!flexItem.ReachMaxHeight)
{
flexItem.Box.SetVisualHeight(this.AvaliableParentHeight);
}
}
this.LineHeightAfterArrange = this.AvaliableParentHeight;
}
}
}
public void PerformLayout(LayoutVisitor lay)
{
if (this._rootBox == null)
{
return;
}
//-----------------------
//reset
_actualWidth = _actualHeight = 0;
// if width is not restricted we set it to large value to get the actual later
_rootBox.SetLocation(0, 0);
_rootBox.SetVisualSize(this._maxWidth > 0 ? this._maxWidth : MAX_WIDTH, 0);
CssBox.ValidateComputeValues(_rootBox);
//-----------------------
//LayoutVisitor layoutArgs = new LayoutVisitor(this.GraphicsPlatform, this);
lay.PushContaingBlock(_rootBox);
//-----------------------
_rootBox.PerformLayout(lay);
if (this._maxWidth <= 0.1)
{
// in case the width is not restricted we need to double layout, first will find the width so second can layout by it (center alignment)
_rootBox.SetVisualWidth((int)Math.Ceiling(this._actualWidth));
_actualWidth = _actualHeight = 0;
_rootBox.PerformLayout(lay);
}
lay.PopContainingBlock();
//-----------------------
//TODO: review here again
FloatingContextStack floatStack = lay.GetFloatingContextStack();
List <FloatingContext> totalContexts = floatStack.GetTotalContexts();
int j = totalContexts.Count;
for (int i = 0; i < j; ++i)
{
FloatingContext floatingContext = totalContexts[i];
int floatBoxCount = floatingContext.FloatBoxCount;
if (floatBoxCount == 0)
{
continue;
}
CssBox floatingOwner = floatingContext.Owner;
float rfx, rfy;
floatingOwner.GetGlobalLocation(out rfx, out rfy);
CssBox prevParent = null;
//TODO: review here again
float extraAdjustX = 0; //temp fixed
for (int n = 0; n < floatBoxCount; ++n)
{
float bfx, bfy;
CssBox box = floatingContext.GetBox(n);
box.GetGlobalLocation(out bfx, out bfy);
//diff
float nx = bfx - rfx;
float ny = bfy - rfy;
if (prevParent != null && prevParent != box.ParentBox)
{
if (n > 0)
{
CssBox prevFloatChild = floatingContext.GetBox(n - 1);
//TODO: review here again
//temp fix
extraAdjustX = prevFloatChild.ActualMarginRight + box.ActualMarginLeft;
ny += box.ActualMarginTop;
}
}
box.SetLocation(nx + extraAdjustX, ny);
prevParent = box.ParentBox;
floatingOwner.AppendToAbsoluteLayer(box);
}
}
OnLayoutFinished();
//-----------------------
unchecked { layoutVersion++; }
//-----------------------
}
public void SetInnerBox(CssBox innerBox)
{
if (this.innerBox != null)
{
return;
}
this.innerBox = innerBox;
this.scrollView = new CssScrollWrapper(innerBox);
//scroll barwidth = 10;
bool needHScrollBar = false;
bool needVScrollBar = false;
int originalBoxW = (int)innerBox.VisualWidth;
int originalBoxH = (int)innerBox.VisualHeight;
int newW = originalBoxW;
int newH = originalBoxH;
const int scBarWidth = 10;
if (innerBox.InnerContentHeight > innerBox.ExpectedHeight)
{
needVScrollBar = true;
newW -= scBarWidth;
}
if (innerBox.InnerContentWidth > innerBox.ExpectedWidth)
{
needHScrollBar = true;
newH -= scBarWidth;
}
innerBox.SetVisualSize(newW, newH);
innerBox.SetExpectedSize(newW, newH);
this.AppendToAbsoluteLayer(innerBox);
//check if need vertical scroll and/or horizontal scroll
//vertical scrollbar
if (needVScrollBar)
{
this.vscbar = new ScrollBar(scBarWidth, needHScrollBar ? newH : originalBoxH);
vscbar.ScrollBarType = ScrollBarType.Vertical;
vscbar.MinValue = 0;
vscbar.MaxValue = innerBox.VisualHeight;
vscbar.SmallChange = 20;
//add relation between viewpanel and scroll bar
vscRelation = new ScrollingRelation(vscbar.SliderBox, scrollView);
//----------------------
var scBarWrapCssBox = LayoutFarm.Composers.CustomCssBoxGenerator.CreateWrapper(
this.vscbar,
this.vscbar.GetPrimaryRenderElement((RootGraphic)this.GetInternalRootGfx()),
CssBox.UnsafeGetBoxSpec(this), false);
scBarWrapCssBox.SetLocation(newW, 0);
this.AppendToAbsoluteLayer(scBarWrapCssBox);
}
if (needHScrollBar)
{
this.hscbar = new ScrollBar(needVScrollBar ? newW : originalBoxW, scBarWidth);
hscbar.ScrollBarType = ScrollBarType.Horizontal;
hscbar.MinValue = 0;
hscbar.MaxValue = innerBox.VisualHeight;
hscbar.SmallChange = 20;
//add relation between viewpanel and scroll bar
hscRelation = new ScrollingRelation(hscbar.SliderBox, scrollView);
//----------------------
var renderE = this.hscbar.GetPrimaryRenderElement((RootGraphic)this.GetInternalRootGfx());
var scBarWrapCssBox = LayoutFarm.Composers.CustomCssBoxGenerator.CreateWrapper(
this.hscbar,
this.hscbar.GetPrimaryRenderElement((RootGraphic)this.GetInternalRootGfx()),
CssBox.UnsafeGetBoxSpec(this), false);
scBarWrapCssBox.SetLocation(0, newH);
this.AppendToAbsoluteLayer(scBarWrapCssBox);
}
}
public void SetInnerBox(CssBox innerBox)
{
if (this.innerBox != null)
{
return;
}
this.innerBox = innerBox;
this.scrollView = new CssScrollWrapper(innerBox);
//scroll barwidth = 10;
bool needHScrollBar = false;
bool needVScrollBar = false;
int originalBoxW = (int)innerBox.VisualWidth;
int originalBoxH = (int)innerBox.VisualHeight;
int newW = originalBoxW;
int newH = originalBoxH;
const int scBarWidth = 10;
if (innerBox.InnerContentHeight > innerBox.ExpectedHeight)
{
needVScrollBar = true;
newW -= scBarWidth;
}
if (innerBox.InnerContentWidth > innerBox.ExpectedWidth)
{
needHScrollBar = true;
newH -= scBarWidth;
}
innerBox.SetVisualSize(newW, newH);
innerBox.SetExpectedSize(newW, newH);
this.AppendToAbsoluteLayer(innerBox);
//check if need vertical scroll and/or horizontal scroll
//vertical scrollbar
if (needVScrollBar)
{
this.vscbar = new ScrollBar(scBarWidth, needHScrollBar ? newH : originalBoxH);
vscbar.ScrollBarType = ScrollBarType.Vertical;
vscbar.MinValue = 0;
vscbar.MaxValue = innerBox.VisualHeight;
vscbar.SmallChange = 20;
//add relation between viewpanel and scroll bar
vscRelation = new ScrollingRelation(vscbar, scrollView);
//----------------------
var scBarWrapCssBox = LayoutFarm.Composers.CustomCssBoxGenerator.CreateWrapper(
this.vscbar,
this.vscbar.GetPrimaryRenderElement((RootGraphic)this.RootGfx),
CssBox.UnsafeGetBoxSpec(this), false);
scBarWrapCssBox.SetLocation(newW, 0);
this.AppendToAbsoluteLayer(scBarWrapCssBox);
}
if (needHScrollBar)
{
this.hscbar = new ScrollBar(needVScrollBar ? newW : originalBoxW, scBarWidth);
hscbar.ScrollBarType = ScrollBarType.Horizontal;
hscbar.MinValue = 0;
hscbar.MaxValue = innerBox.VisualHeight;
hscbar.SmallChange = 20;
//add relation between viewpanel and scroll bar
hscRelation = new ScrollingRelation(hscbar, scrollView);
//----------------------
var renderE = this.hscbar.GetPrimaryRenderElement((RootGraphic)this.RootGfx);
var scBarWrapCssBox = LayoutFarm.Composers.CustomCssBoxGenerator.CreateWrapper(
this.hscbar,
this.hscbar.GetPrimaryRenderElement((RootGraphic)this.RootGfx),
CssBox.UnsafeGetBoxSpec(this), false);
scBarWrapCssBox.SetLocation(0, newH);
this.AppendToAbsoluteLayer(scBarWrapCssBox);
}
}
