private int AddZone()
{
GridZone zone;
if (Model != null)
{
IList <int> freeZones = Model.FreeZones;
// first check free list
if (freeZones.Count > 0)
{
int freeIndex = freeZones[0];
freeZones.RemoveAt(0);
zone = (GridZone)Preview.Children[freeIndex];
zone.Visibility = Visibility.Visible;
return(freeIndex);
}
}
zone = new GridZone();
zone.Split += OnSplit;
zone.MergeDrag += OnMergeDrag;
zone.MergeComplete += OnMergeComplete;
zone.FullSplit += OnFullSplit;
Preview.Children.Add(zone);
return(Preview.Children.Count - 1);
}
private void HandleGridZoneKeyUp(GridZone gridZone, KeyEventArgs e)
{
if (e.Key != Key.S)
{
return;
}
Orientation orient = Orientation.Horizontal;
Debug.Assert(Preview.Children.Count > Preview.Children.IndexOf(gridZone), "Zone index out of range");
int offset;
if (((App)Application.Current).MainWindowSettings.IsShiftKeyPressed)
{
orient = Orientation.Vertical;
offset = gridZone.SnapAtHalfX();
}
else
{
offset = gridZone.SnapAtHalfY();
}
gridZone.DoSplit(orient, offset);
}
private void SetZonePanelSize(GridZone panel, GridData.Zone zone)
{
Size actualSize = WorkAreaSize();
double spacing = Model.ShowSpacing ? Model.Spacing : 0;
double topSpacing = zone.Top == 0 ? spacing : spacing / 2;
double bottomSpacing = zone.Bottom == GridData.Multiplier ? spacing : spacing / 2;
double leftSpacing = zone.Left == 0 ? spacing : spacing / 2;
double rightSpacing = zone.Right == GridData.Multiplier ? spacing : spacing / 2;
Canvas.SetTop(panel, (actualSize.Height * zone.Top / GridData.Multiplier) + topSpacing);
Canvas.SetLeft(panel, (actualSize.Width * zone.Left / GridData.Multiplier) + leftSpacing);
panel.MinWidth = Math.Max(1, (actualSize.Width * (zone.Right - zone.Left) / GridData.Multiplier) - leftSpacing - rightSpacing);
panel.MinHeight = Math.Max(1, (actualSize.Height * (zone.Bottom - zone.Top) / GridData.Multiplier) - topSpacing - bottomSpacing);
}
private void DeleteZone(int index)
{
IList <int> freeZones = Model.FreeZones;
if (freeZones.Contains(index))
{
return;
}
freeZones.Add(index);
GridZone zone = (GridZone)Preview.Children[index];
zone.Visibility = Visibility.Hidden;
zone.MinHeight = 0;
zone.MinWidth = 0;
}
public void ArrangeZones(UIElementCollection zones, int spacing)
{
if (zones.Count == 0)
{
return;
}
int rows = _model.Rows;
int cols = _model.Columns;
int[,] cells = _model.CellChildMap;
if (cells.Length < rows * cols)
{
// Merge was not finished yet, rows and cols values are invalid
return;
}
double left, top;
for (int row = 0; row < rows; row++)
{
for (int col = 0; col < cols; col++)
{
int i = cells[row, col];
if (((row == 0) || (cells[row - 1, col] != i)) &&
((col == 0) || (cells[row, col - 1] != i)))
{
// this is not a continuation of a span
GridZone zone = (GridZone)zones[i];
left = _colInfo[col].Start;
top = _rowInfo[row].Start;
Canvas.SetLeft(zone, left);
Canvas.SetTop(zone, top);
zone.LabelID.Content = i + 1;
int maxRow = row;
while (((maxRow + 1) < rows) && (cells[maxRow + 1, col] == i))
{
maxRow++;
}
zone.HorizontalSnapPoints = null;
if (maxRow > row)
{
zone.HorizontalSnapPoints = new double[maxRow - row];
int pointsIndex = 0;
for (int walk = row; walk < maxRow; walk++)
{
zone.HorizontalSnapPoints[pointsIndex++] = _rowInfo[walk].End + (spacing / 2) - top;
}
}
int maxCol = col;
while (((maxCol + 1) < cols) && (cells[row, maxCol + 1] == i))
{
maxCol++;
}
zone.VerticalSnapPoints = null;
if (maxCol > col)
{
zone.VerticalSnapPoints = new double[maxCol - col];
int pointsIndex = 0;
for (int walk = col; walk < maxCol; walk++)
{
zone.VerticalSnapPoints[pointsIndex++] = _colInfo[walk].End + (spacing / 2) - left;
}
}
zone.MinWidth = _colInfo[maxCol].End - left;
zone.MinHeight = _rowInfo[maxRow].End - top;
}
}
}
}
private void OnSplit(object o, SplitEventArgs e)
{
MergeCancelClick(null, null);
UIElementCollection previewChildren = Preview.Children;
GridZone splitee = (GridZone)o;
int spliteeIndex = previewChildren.IndexOf(splitee);
GridLayoutModel model = Model;
int rows = model.Rows;
int cols = model.Columns;
Tuple <int, int> rowCol = _data.RowColByIndex(spliteeIndex);
int foundRow = rowCol.Item1;
int foundCol = rowCol.Item2;
int newChildIndex = AddZone();
double offset = e.Offset;
double space = e.Space;
if (e.Orientation == Orientation.Vertical)
{
if (splitee.VerticalSnapPoints != null)
{
offset += Canvas.GetLeft(splitee);
int count = splitee.VerticalSnapPoints.Length;
bool foundExistingSplit = false;
int splitCol = foundCol;
for (int i = 0; i <= count; i++)
{
if (foundExistingSplit)
{
int walkRow = foundRow;
while ((walkRow < rows) && (_data.GetIndex(walkRow, foundCol + i) == spliteeIndex))
{
_data.SetIndex(walkRow++, foundCol + i, newChildIndex);
}
}
if (_data.ColumnBottom(foundCol + i) == offset)
{
foundExistingSplit = true;
splitCol = foundCol + i;
// use existing division
}
}
if (foundExistingSplit)
{
_data.ReplaceIndicesToMaintainOrder(Preview.Children.Count);
_dragHandles.UpdateForExistingVerticalSplit(model, foundRow, splitCol);
OnGridDimensionsChanged();
return;
}
while (_data.ColumnBottom(foundCol) < offset)
{
foundCol++;
}
offset -= _data.ColumnTop(foundCol);
}
_dragHandles.UpdateAfterVerticalSplit(foundCol);
_data.SplitColumn(foundCol, spliteeIndex, newChildIndex, space, offset, ActualWidth);
_dragHandles.AddDragHandle(Orientation.Vertical, foundRow, foundCol, model);
}
else
{
// Horizontal
if (splitee.HorizontalSnapPoints != null)
{
offset += Canvas.GetTop(splitee);
int count = splitee.HorizontalSnapPoints.Length;
bool foundExistingSplit = false;
int splitRow = foundRow;
for (int i = 0; i <= count; i++)
{
if (foundExistingSplit)
{
int walkCol = foundCol;
while ((walkCol < cols) && (_data.GetIndex(foundRow + i, walkCol) == spliteeIndex))
{
_data.SetIndex(foundRow + i, walkCol++, newChildIndex);
}
}
if (_data.RowEnd(foundRow + i) == offset)
{
foundExistingSplit = true;
splitRow = foundRow + i;
// use existing division
}
}
if (foundExistingSplit)
{
_data.ReplaceIndicesToMaintainOrder(Preview.Children.Count);
_dragHandles.UpdateForExistingHorizontalSplit(model, splitRow, foundCol);
OnGridDimensionsChanged();
return;
}
while (_data.RowEnd(foundRow) < offset)
{
foundRow++;
}
offset -= _data.RowStart(foundRow);
}
_dragHandles.UpdateAfterHorizontalSplit(foundRow);
_data.SplitRow(foundRow, spliteeIndex, newChildIndex, space, offset, ActualHeight);
_dragHandles.AddDragHandle(Orientation.Horizontal, foundRow, foundCol, model);
}
Size actualSize = new Size(ActualWidth, ActualHeight);
ArrangeGridRects(actualSize);
}
private void SetupUI()
{
Size actualSize = WorkAreaSize();
if (actualSize.Width < 1 || _data == null || _data.Zones == null || Model == null)
{
return;
}
int spacing = Model.ShowSpacing ? Model.Spacing : 0;
_data.MinZoneWidth = Convert.ToInt32(GridData.Multiplier / actualSize.Width * (MinZoneSize + (2 * spacing)));
_data.MinZoneHeight = Convert.ToInt32(GridData.Multiplier / actualSize.Height * (MinZoneSize + (2 * spacing)));
Preview.Children.Clear();
AdornerLayer.Children.Clear();
Preview.Width = actualSize.Width;
Preview.Height = actualSize.Height;
MagneticSnap snapX = new MagneticSnap(GridData.PrefixSum(Model.ColumnPercents).GetRange(1, Model.ColumnPercents.Count - 1), actualSize.Width);
MagneticSnap snapY = new MagneticSnap(GridData.PrefixSum(Model.RowPercents).GetRange(1, Model.RowPercents.Count - 1), actualSize.Height);
for (int zoneIndex = 0; zoneIndex < _data.Zones.Count; zoneIndex++)
{
// this is needed for the lambda
int zoneIndexCopy = zoneIndex;
var zone = _data.Zones[zoneIndex];
var zonePanel = new GridZone(spacing, snapX, snapY, (orientation, offset) => _data.CanSplit(zoneIndexCopy, offset, orientation), zone);
zonePanel.UpdateShiftState(((App)Application.Current).MainWindowSettings.IsShiftKeyPressed);
Preview.Children.Add(zonePanel);
zonePanel.Split += OnSplit;
zonePanel.MergeDrag += OnMergeDrag;
zonePanel.MergeComplete += OnMergeComplete;
SetZonePanelSize(zonePanel, zone);
zonePanel.LabelID.Content = zoneIndex + 1;
}
foreach (var resizer in _data.Resizers)
{
var resizerThumb = new GridResizer();
resizerThumb.DragStarted += Resizer_DragStarted;
resizerThumb.DragDelta += Resizer_DragDelta;
resizerThumb.DragCompleted += Resizer_DragCompleted;
resizerThumb.Orientation = resizer.Orientation;
AdornerLayer.Children.Add(resizerThumb);
if (resizer.Orientation == Orientation.Horizontal)
{
resizerThumb.LeftReferenceZone = resizer.PositiveSideIndices[0];
resizerThumb.RightReferenceZone = resizer.PositiveSideIndices.Last();
resizerThumb.TopReferenceZone = resizer.PositiveSideIndices[0];
resizerThumb.BottomReferenceZone = resizer.NegativeSideIndices[0];
}
else
{
resizerThumb.LeftReferenceZone = resizer.PositiveSideIndices[0];
resizerThumb.RightReferenceZone = resizer.NegativeSideIndices[0];
resizerThumb.TopReferenceZone = resizer.PositiveSideIndices[0];
resizerThumb.BottomReferenceZone = resizer.PositiveSideIndices.Last();
}
PlaceResizer(resizerThumb);
}
}
private void ArrangeGridRects(Size arrangeSize)
{
GridLayoutModel model = Model;
if (model == null)
{
return;
}
Settings settings = ((App)Application.Current).ZoneSettings;
int spacing, gutter;
spacing = gutter = settings.ShowSpacing ? settings.Spacing : 0;
int cols = model.Columns;
int rows = model.Rows;
double totalWidth = arrangeSize.Width - (gutter * 2) - (spacing * (cols - 1));
double totalHeight = arrangeSize.Height - (gutter * 2) - (spacing * (rows - 1));
double top = gutter;
for (int row = 0; row < rows; row++)
{
double cellHeight = _rowInfo[row].Recalculate(top, totalHeight);
top += cellHeight + spacing;
}
double left = gutter;
for (int col = 0; col < cols; col++)
{
double cellWidth = _colInfo[col].Recalculate(left, totalWidth);
left += cellWidth + spacing;
}
for (int row = 0; row < rows; row++)
{
for (int col = 0; col < cols; col++)
{
int i = model.CellChildMap[row, col];
if (((row == 0) || (model.CellChildMap[row - 1, col] != i)) &&
((col == 0) || (model.CellChildMap[row, col - 1] != i)))
{
// this is not a continuation of a span
GridZone zone = (GridZone)Preview.Children[i];
left = _colInfo[col].Start;
top = _rowInfo[row].Start;
Canvas.SetLeft(zone, left);
Canvas.SetTop(zone, top);
int maxRow = row;
while (((maxRow + 1) < rows) && (model.CellChildMap[maxRow + 1, col] == i))
{
maxRow++;
}
zone.HorizontalSnapPoints = null;
if (maxRow > row)
{
zone.HorizontalSnapPoints = new double[maxRow - row];
int pointsIndex = 0;
for (int walk = row; walk < maxRow; walk++)
{
zone.HorizontalSnapPoints[pointsIndex++] = _rowInfo[walk].End + (spacing / 2) - top;
}
}
int maxCol = col;
while (((maxCol + 1) < cols) && (model.CellChildMap[row, maxCol + 1] == i))
{
maxCol++;
}
zone.VerticalSnapPoints = null;
if (maxCol > col)
{
zone.VerticalSnapPoints = new double[maxCol - col];
int pointsIndex = 0;
for (int walk = col; walk < maxCol; walk++)
{
zone.VerticalSnapPoints[pointsIndex++] = _colInfo[walk].End + (spacing / 2) - left;
}
}
zone.MinWidth = _colInfo[maxCol].End - left;
zone.MinHeight = _rowInfo[maxRow].End - top;
}
}
}
AddDragHandles();
int childIndex = 0;
UIElementCollection adornerChildren = AdornerLayer.Children;
for (int row = 0; row < rows - 1; row++)
{
GridResizer resizer = (GridResizer)adornerChildren[childIndex++];
int startCol = -1;
int endCol = cols - 1;
for (int col = 0; col < cols; col++)
{
if ((startCol == -1) && (model.CellChildMap[row, col] != model.CellChildMap[row + 1, col]))
{
startCol = col;
}
else if ((startCol != -1) && (model.CellChildMap[row, col] == model.CellChildMap[row + 1, col]))
{
endCol = col - 1;
break;
}
}
if (startCol != -1)
{
// hard coding this as (resizer.ActualHeight / 2) will still evaluate to 0 here ... a layout hasn't yet happened
Canvas.SetTop(resizer, _rowInfo[row].End + (spacing / 2) - 24);
Canvas.SetLeft(resizer, (_colInfo[endCol].End + _colInfo[startCol].Start) / 2);
}
else
{
resizer.Visibility = Visibility.Collapsed;
}
}
for (int col = 0; col < cols - 1; col++)
{
GridResizer resizer = (GridResizer)adornerChildren[childIndex++];
int startRow = -1;
int endRow = rows - 1;
for (int row = 0; row < rows; row++)
{
if ((startRow == -1) && (model.CellChildMap[row, col] != model.CellChildMap[row, col + 1]))
{
startRow = row;
}
else if ((startRow != -1) && (model.CellChildMap[row, col] == model.CellChildMap[row, col + 1]))
{
endRow = row - 1;
break;
}
}
if (startRow != -1)
{
Canvas.SetLeft(resizer, _colInfo[col].End + (spacing / 2) - 24); // hard coding this as (resizer.ActualWidth / 2) will still evaluate to 0 here ... a layout hasn't yet happened
Canvas.SetTop(resizer, (_rowInfo[endRow].End + _rowInfo[startRow].Start) / 2);
}
else
{
resizer.Visibility = Visibility.Collapsed;
}
}
}
private void OnSplit(object o, SplitEventArgs e)
{
UIElementCollection previewChildren = Preview.Children;
GridZone splitee = (GridZone)o;
int spliteeIndex = previewChildren.IndexOf(splitee);
GridLayoutModel model = Model;
int rows = model.Rows;
int cols = model.Columns;
int foundRow = -1;
int foundCol = -1;
for (int row = 0; row < rows; row++)
{
for (int col = 0; col < cols; col++)
{
if (model.CellChildMap[row, col] == spliteeIndex)
{
foundRow = row;
foundCol = col;
break;
}
}
if (foundRow != -1)
{
break;
}
}
int newChildIndex = AddZone();
double offset = e.Offset;
if (e.Orientation == Orientation.Vertical)
{
if (splitee.VerticalSnapPoints != null)
{
offset += Canvas.GetLeft(splitee);
int count = splitee.VerticalSnapPoints.Length;
bool foundExistingSplit = false;
for (int i = 0; i <= count; i++)
{
if (foundExistingSplit)
{
int walkRow = foundRow;
while ((walkRow < rows) && (model.CellChildMap[walkRow, foundCol + i] == spliteeIndex))
{
model.CellChildMap[walkRow++, foundCol + i] = newChildIndex;
}
}
if (_colInfo[foundCol + i].End == offset)
{
foundExistingSplit = true;
// use existing division
}
}
if (foundExistingSplit)
{
OnGridDimensionsChanged();
return;
}
while (_colInfo[foundCol].End < offset)
{
foundCol++;
}
offset -= _colInfo[foundCol].Start;
}
AddDragHandle(Orientation.Vertical, cols - 1);
cols++;
int[,] newCellChildMap = new int[rows, cols];
int[] newColPercents = new int[cols];
RowColInfo[] newColInfo = new RowColInfo[cols];
int sourceCol = 0;
for (int col = 0; col < cols; col++)
{
for (int row = 0; row < rows; row++)
{
if ((col > foundCol) && (model.CellChildMap[row, sourceCol] == spliteeIndex))
{
newCellChildMap[row, col] = newChildIndex;
}
else
{
newCellChildMap[row, col] = model.CellChildMap[row, sourceCol];
}
}
if (col != foundCol)
{
sourceCol++;
}
}
model.CellChildMap = newCellChildMap;
sourceCol = 0;
for (int col = 0; col < cols; col++)
{
if (col == foundCol)
{
RowColInfo[] split = _colInfo[col].Split(offset);
newColPercents[col] = split[0].Percent;
newColInfo[col++] = split[0];
newColPercents[col] = split[1].Percent;
newColInfo[col] = split[1];
sourceCol++;
}
else
{
newColPercents[col] = model.ColumnPercents[sourceCol];
newColInfo[col] = _colInfo[sourceCol++];
}
}
_colInfo = newColInfo;
model.ColumnPercents = newColPercents;
model.Columns++;
}
else
{
// Horizontal
if (splitee.HorizontalSnapPoints != null)
{
offset += Canvas.GetTop(splitee);
int count = splitee.HorizontalSnapPoints.Length;
bool foundExistingSplit = false;
for (int i = 0; i <= count; i++)
{
if (foundExistingSplit)
{
int walkCol = foundCol;
while ((walkCol < cols) && (model.CellChildMap[foundRow + i, walkCol] == spliteeIndex))
{
model.CellChildMap[foundRow + i, walkCol] = newChildIndex;
}
}
if (_rowInfo[foundRow + i].End == offset)
{
foundExistingSplit = true;
// use existing division
}
}
if (foundExistingSplit)
{
OnGridDimensionsChanged();
return;
}
while (_rowInfo[foundRow].End < offset)
{
foundRow++;
}
offset -= _rowInfo[foundRow].Start;
}
AddDragHandle(Orientation.Horizontal, rows - 1);
rows++;
int[,] newCellChildMap = new int[rows, cols];
int[] newRowPercents = new int[rows];
RowColInfo[] newRowInfo = new RowColInfo[rows];
int sourceRow = 0;
for (int row = 0; row < rows; row++)
{
for (int col = 0; col < cols; col++)
{
if ((row > foundRow) && (model.CellChildMap[sourceRow, col] == spliteeIndex))
{
newCellChildMap[row, col] = newChildIndex;
}
else
{
newCellChildMap[row, col] = model.CellChildMap[sourceRow, col];
}
}
if (row != foundRow)
{
sourceRow++;
}
}
model.CellChildMap = newCellChildMap;
sourceRow = 0;
for (int row = 0; row < rows; row++)
{
if (row == foundRow)
{
RowColInfo[] split = _rowInfo[row].Split(offset);
newRowPercents[row] = split[0].Percent;
newRowInfo[row++] = split[0];
newRowPercents[row] = split[1].Percent;
newRowInfo[row] = split[1];
sourceRow++;
}
else
{
newRowPercents[row] = model.RowPercents[sourceRow];
newRowInfo[row] = _rowInfo[sourceRow++];
}
}
_rowInfo = newRowInfo;
model.RowPercents = newRowPercents;
model.Rows++;
}
}