public void Calculate(int desiredWidth)
{
_posArray.Clear();
Positions.Clear();
int count = Messages.Count;
if (count <= 1)
{
return;
}
int totalWidth = 0;
float totalHeight = 0.0f;
_scale = (float)desiredWidth / _maxSizeWidth;
_maxSizeWidth = desiredWidth;
int firstSpanAdditionalSize = (int)(200 * _scale);
int minHeight = (int)(120 * _scale);
int minWidth = (int)(96 * _scale);
int paddingsWidth = (int)(32 * _scale);
float maxSizeHeight = 814.0f * _scale;
StringBuilder proportions = new StringBuilder();
float averageAspectRatio = 1.0f;
bool isOut = false;
int maxX = 0;
bool forceCalc = false;
for (int a = 0; a < count; a++)
{
int w = 0;
int h = 0;
var decryptedMessageObject = Messages[a] as TLDecryptedMessage;
if (decryptedMessageObject != null)
{
TLVector <TLPhotoSizeBase> photoThumbs = null;
var photoMedia = decryptedMessageObject.Media as TLDecryptedMessageMediaPhoto;
var documentMedia = decryptedMessageObject.Media as TLDecryptedMessageMediaDocument;
var videoMedia = decryptedMessageObject.Media as TLDecryptedMessageMediaVideo;
if (photoMedia != null)
{
photoThumbs = new TLVector <TLPhotoSizeBase> {
new TLPhotoSize {
W = photoMedia.W, H = photoMedia.H
}
};
}
else if (documentMedia != null)
{
photoThumbs = new TLVector <TLPhotoSizeBase> {
new TLPhotoSize {
W = documentMedia.ThumbW.Value > 0 ? documentMedia.ThumbW : new TLInt(90), H = documentMedia.ThumbH.Value > 0 ? documentMedia.ThumbH : new TLInt(90)
}
};
}
else if (videoMedia != null)
{
photoThumbs = new TLVector <TLPhotoSizeBase> {
new TLPhotoSize {
W = videoMedia.W.Value > 0 ? videoMedia.W : new TLInt(90), H = videoMedia.H.Value > 0 ? videoMedia.H : new TLInt(90)
}
};
}
TLPhotoSizeBase photoSize = GetClosestPhotoSizeWithSize(photoThumbs, 1280);
var size = photoSize as TLPhotoSize;
var cachedSize = photoSize as TLPhotoCachedSize;
if (size != null)
{
w = size.W.Value;
h = size.H.Value;
}
else if (cachedSize != null)
{
w = cachedSize.W.Value;
h = cachedSize.H.Value;
}
GroupedMessagePosition position = new GroupedMessagePosition();
position.IsLast = a == count - 1;
position.AspectRatio = w / (float)h;
if (position.AspectRatio > 1.2f)
{
proportions.Append("w");
}
else if (position.AspectRatio < 0.8f)
{
proportions.Append("n");
}
else
{
proportions.Append("q");
}
averageAspectRatio += position.AspectRatio;
if (position.AspectRatio > 2.0f)
{
forceCalc = true;
}
Positions[decryptedMessageObject] = position;
_posArray.Add(position);
}
var messageObject = Messages[a] as TLMessage;
if (messageObject != null)
{
TLVector <TLPhotoSizeBase> photoThumbs = null;
var photoMedia = messageObject.Media as TLMessageMediaPhoto;
var documentMedia = messageObject.Media as TLMessageMediaDocument;
if (photoMedia != null)
{
var photo = photoMedia.Photo as TLPhoto;
if (photo != null)
{
photoThumbs = photo.Sizes;
}
}
else if (documentMedia != null)
{
var document = documentMedia.Document as TLDocument;
if (document != null)
{
photoThumbs = new TLVector <TLPhotoSizeBase> {
document.Thumb
};
}
}
TLPhotoSizeBase photoSize = GetClosestPhotoSizeWithSize(photoThumbs, 1280);
var size = photoSize as TLPhotoSize;
var cachedSize = photoSize as TLPhotoCachedSize;
if (size != null)
{
w = size.W.Value;
h = size.H.Value;
}
else if (cachedSize != null)
{
w = cachedSize.W.Value;
h = cachedSize.H.Value;
}
GroupedMessagePosition position = new GroupedMessagePosition();
position.IsLast = a == count - 1;
position.AspectRatio = w / (float)h;
if (position.AspectRatio > 1.2f)
{
proportions.Append("w");
}
else if (position.AspectRatio < 0.8f)
{
proportions.Append("n");
}
else
{
proportions.Append("q");
}
averageAspectRatio += position.AspectRatio;
if (position.AspectRatio > 2.0f)
{
forceCalc = true;
}
Positions[messageObject] = position;
_posArray.Add(position);
}
}
//int minHeight = AndroidUtilities.dp(120);
//int minWidth = (int)(AndroidUtilities.dp(120) / (Math.Min(AndroidUtilities.displaySize.x, AndroidUtilities.displaySize.y) / (float)_maxSizeWidth));
//int paddingsWidth = (int)(AndroidUtilities.dp(40) / (Math.Min(AndroidUtilities.displaySize.x, AndroidUtilities.displaySize.y) / (float)_maxSizeWidth));
float maxAspectRatio = _maxSizeWidth / maxSizeHeight;
averageAspectRatio = averageAspectRatio / count;
if (!forceCalc && (count == 2 || count == 3 || count == 4))
{
if (count == 2)
{
GroupedMessagePosition position1 = _posArray[0];
GroupedMessagePosition position2 = _posArray[1];
String pString = proportions.ToString();
if (pString.Equals("ww") && averageAspectRatio > 1.4 * maxAspectRatio && position1.AspectRatio - position2.AspectRatio < 0.2)
{
float height = (float)Math.Round(Math.Min(_maxSizeWidth / position1.AspectRatio, Math.Min(_maxSizeWidth / position2.AspectRatio, maxSizeHeight / 2.0f))) / maxSizeHeight;
position1.Set(0, 0, 0, 0, _maxSizeWidth, height, POSITION_FLAG_LEFT | POSITION_FLAG_RIGHT | POSITION_FLAG_TOP);
position2.Set(0, 0, 1, 1, _maxSizeWidth, height, POSITION_FLAG_LEFT | POSITION_FLAG_RIGHT | POSITION_FLAG_BOTTOM);
totalWidth = _maxSizeWidth;
totalHeight = height * 2;
}
else if (pString.Equals("ww") || pString.Equals("qq"))
{
int width = _maxSizeWidth / 2;
float height = (float)Math.Round(Math.Min(width / position1.AspectRatio, Math.Min(width / position2.AspectRatio, maxSizeHeight))) / maxSizeHeight;
position1.Set(0, 0, 0, 0, width, height, POSITION_FLAG_LEFT | POSITION_FLAG_BOTTOM | POSITION_FLAG_TOP);
position2.Set(1, 1, 0, 0, width, height, POSITION_FLAG_RIGHT | POSITION_FLAG_BOTTOM | POSITION_FLAG_TOP);
maxX = 1;
totalWidth = width + width;
totalHeight = height;
}
else
{
int secondWidth = (int)Math.Max(0.4f * _maxSizeWidth, Math.Round((_maxSizeWidth / position1.AspectRatio / (1.0f / position1.AspectRatio + 1.0f / position2.AspectRatio))));
int firstWidth = _maxSizeWidth - secondWidth;
if (firstWidth < minWidth)
{
int diff = minWidth - firstWidth;
firstWidth = minWidth;
secondWidth -= diff;
}
float height = (float)Math.Min(maxSizeHeight, Math.Round(Math.Min(firstWidth / position1.AspectRatio, secondWidth / position2.AspectRatio))) / maxSizeHeight;
position1.Set(0, 0, 0, 0, firstWidth, height, POSITION_FLAG_LEFT | POSITION_FLAG_BOTTOM | POSITION_FLAG_TOP);
position2.Set(1, 1, 0, 0, secondWidth, height, POSITION_FLAG_RIGHT | POSITION_FLAG_BOTTOM | POSITION_FLAG_TOP);
maxX = 1;
totalWidth = firstWidth + secondWidth;
totalHeight = height;
}
}
else if (count == 3)
{
GroupedMessagePosition position1 = _posArray[0];
GroupedMessagePosition position2 = _posArray[1];
GroupedMessagePosition position3 = _posArray[2];
if (proportions[0] == 'n')
{
float thirdHeight = (float)Math.Min(maxSizeHeight * 0.5f, Math.Round(position2.AspectRatio * _maxSizeWidth / (position3.AspectRatio + position2.AspectRatio)));
float secondHeight = maxSizeHeight - thirdHeight;
int rightWidth = (int)Math.Max(minWidth, Math.Min(_maxSizeWidth * 0.5f, Math.Round(Math.Min(thirdHeight * position3.AspectRatio, secondHeight * position2.AspectRatio))));
int leftWidth = (int)Math.Round(Math.Min(maxSizeHeight * position1.AspectRatio + paddingsWidth, _maxSizeWidth - rightWidth));
position1.Set(0, 0, 0, 1, leftWidth, 1.0f, POSITION_FLAG_LEFT | POSITION_FLAG_BOTTOM | POSITION_FLAG_TOP);
position2.Set(1, 1, 0, 0, rightWidth, secondHeight / maxSizeHeight, POSITION_FLAG_RIGHT | POSITION_FLAG_TOP);
position3.Set(0, 1, 1, 1, rightWidth, thirdHeight / maxSizeHeight, POSITION_FLAG_RIGHT | POSITION_FLAG_BOTTOM);
position3.SpanSize = _maxSizeWidth;
position1.SiblingHeights = new float[] { thirdHeight / maxSizeHeight, secondHeight / maxSizeHeight };
if (isOut)
{
position1.SpanSize = _maxSizeWidth - rightWidth;
}
else
{
position2.SpanSize = _maxSizeWidth - leftWidth;
position3.LeftSpanOffset = leftWidth;
}
HasSibling = true;
maxX = 1;
totalWidth = leftWidth + rightWidth;
totalHeight = 1.0f;
}
else
{
float firstHeight = (float)Math.Round(Math.Min(_maxSizeWidth / position1.AspectRatio, (maxSizeHeight) * 0.66f)) / maxSizeHeight;
position1.Set(0, 1, 0, 0, _maxSizeWidth, firstHeight, POSITION_FLAG_LEFT | POSITION_FLAG_RIGHT | POSITION_FLAG_TOP);
int width = _maxSizeWidth / 2;
float secondHeight = (float)Math.Min(maxSizeHeight - firstHeight, Math.Round(Math.Min(width / position2.AspectRatio, width / position3.AspectRatio))) / maxSizeHeight;
position2.Set(0, 0, 1, 1, width, secondHeight, POSITION_FLAG_LEFT | POSITION_FLAG_BOTTOM);
position3.Set(1, 1, 1, 1, width, secondHeight, POSITION_FLAG_RIGHT | POSITION_FLAG_BOTTOM);
maxX = 1;
totalWidth = _maxSizeWidth;
totalHeight = firstHeight + secondHeight;
}
}
else if (count == 4)
{
GroupedMessagePosition position1 = _posArray[0];
GroupedMessagePosition position2 = _posArray[1];
GroupedMessagePosition position3 = _posArray[2];
GroupedMessagePosition position4 = _posArray[3];
if (proportions[0] == 'w')
{
float h0 = (float)Math.Round(Math.Min(_maxSizeWidth / position1.AspectRatio, maxSizeHeight * 0.66f)) / maxSizeHeight;
position1.Set(0, 2, 0, 0, _maxSizeWidth, h0, POSITION_FLAG_LEFT | POSITION_FLAG_RIGHT | POSITION_FLAG_TOP);
float h = (float)Math.Round(_maxSizeWidth / (position2.AspectRatio + position3.AspectRatio + position4.AspectRatio));
int w0 = (int)Math.Max(minWidth, Math.Min(_maxSizeWidth * 0.4f, h * position2.AspectRatio));
int w2 = (int)Math.Max(Math.Max(minWidth, _maxSizeWidth * 0.33f), h * position4.AspectRatio);
int w1 = _maxSizeWidth - w0 - w2;
h = Math.Min(maxSizeHeight - h0, h);
h /= maxSizeHeight;
position2.Set(0, 0, 1, 1, w0, h, POSITION_FLAG_LEFT | POSITION_FLAG_BOTTOM);
position3.Set(1, 1, 1, 1, w1, h, POSITION_FLAG_BOTTOM);
position4.Set(2, 2, 1, 1, w2, h, POSITION_FLAG_RIGHT | POSITION_FLAG_BOTTOM);
maxX = 2;
totalWidth = _maxSizeWidth;
totalHeight = h0 + h;
}
else
{
int w = (int)Math.Max(minWidth, Math.Round(maxSizeHeight / (1.0f / position2.AspectRatio + 1.0f / position3.AspectRatio + 1.0f / _posArray[3].AspectRatio)));
float h0 = Math.Min(0.33f, Math.Max(minHeight, w / position2.AspectRatio) / maxSizeHeight);
float h1 = Math.Min(0.33f, Math.Max(minHeight, w / position3.AspectRatio) / maxSizeHeight);
float h2 = 1.0f - h0 - h1;
int w0 = (int)Math.Round(Math.Min(maxSizeHeight * position1.AspectRatio + paddingsWidth, _maxSizeWidth - w));
position1.Set(0, 0, 0, 2, w0, h0 + h1 + h2, POSITION_FLAG_LEFT | POSITION_FLAG_TOP | POSITION_FLAG_BOTTOM);
position2.Set(1, 1, 0, 0, w, h0, POSITION_FLAG_RIGHT | POSITION_FLAG_TOP);
position3.Set(0, 1, 1, 1, w, h1, POSITION_FLAG_RIGHT);
position3.SpanSize = _maxSizeWidth;
position4.Set(0, 1, 2, 2, w, h2, POSITION_FLAG_RIGHT | POSITION_FLAG_BOTTOM);
position4.SpanSize = _maxSizeWidth;
if (isOut)
{
position1.SpanSize = _maxSizeWidth - w;
}
else
{
position2.SpanSize = _maxSizeWidth - w0;
position3.LeftSpanOffset = w0;
position4.LeftSpanOffset = w0;
}
position1.SiblingHeights = new float[] { h0, h1, h2 };
HasSibling = true;
maxX = 1;
totalWidth = w + w0;
totalHeight = h0 + h1 + h2;
}
}
}
else
{
float[] croppedRatios = new float[_posArray.Count];
for (int a = 0; a < count; a++)
{
if (averageAspectRatio > 1.1f)
{
croppedRatios[a] = Math.Max(1.0f, _posArray[a].AspectRatio);
}
else
{
croppedRatios[a] = Math.Min(1.0f, _posArray[a].AspectRatio);
}
croppedRatios[a] = Math.Max(0.66667f, Math.Min(1.7f, croppedRatios[a]));
}
int firstLine;
int secondLine;
int thirdLine;
int fourthLine;
List <MessageGroupedLayoutAttempt> attempts = new List <MessageGroupedLayoutAttempt>();
for (firstLine = 1; firstLine < croppedRatios.Length; firstLine++)
{
secondLine = croppedRatios.Length - firstLine;
if (firstLine > 3 || secondLine > 3)
{
continue;
}
attempts.Add(new MessageGroupedLayoutAttempt(firstLine, secondLine, MultiHeight(croppedRatios, 0, firstLine), MultiHeight(croppedRatios, firstLine, croppedRatios.Length)));
}
for (firstLine = 1; firstLine < croppedRatios.Length - 1; firstLine++)
{
for (secondLine = 1; secondLine < croppedRatios.Length - firstLine; secondLine++)
{
thirdLine = croppedRatios.Length - firstLine - secondLine;
if (firstLine > 3 || secondLine > (averageAspectRatio < 0.85f ? 4 : 3) || thirdLine > 3)
{
continue;
}
attempts.Add(new MessageGroupedLayoutAttempt(firstLine, secondLine, thirdLine, MultiHeight(croppedRatios, 0, firstLine), MultiHeight(croppedRatios, firstLine, firstLine + secondLine), MultiHeight(croppedRatios, firstLine + secondLine, croppedRatios.Length)));
}
}
for (firstLine = 1; firstLine < croppedRatios.Length - 2; firstLine++)
{
for (secondLine = 1; secondLine < croppedRatios.Length - firstLine; secondLine++)
{
for (thirdLine = 1; thirdLine < croppedRatios.Length - firstLine - secondLine; thirdLine++)
{
fourthLine = croppedRatios.Length - firstLine - secondLine - thirdLine;
if (firstLine > 3 || secondLine > 3 || thirdLine > 3 || fourthLine > 3)
{
continue;
}
attempts.Add(new MessageGroupedLayoutAttempt(firstLine, secondLine, thirdLine, fourthLine, MultiHeight(croppedRatios, 0, firstLine), MultiHeight(croppedRatios, firstLine, firstLine + secondLine), MultiHeight(croppedRatios, firstLine + secondLine, firstLine + secondLine + thirdLine), MultiHeight(croppedRatios, firstLine + secondLine + thirdLine, croppedRatios.Length)));
}
}
}
MessageGroupedLayoutAttempt optimal = null;
float optimalDiff = 0.0f;
float maxHeight = _maxSizeWidth / 3 * 4;
for (int a = 0; a < attempts.Count; a++)
{
MessageGroupedLayoutAttempt attempt = attempts[a];
float height = 0;
float minLineHeight = float.MaxValue;
for (int b = 0; b < attempt.Heights.Length; b++)
{
height += attempt.Heights[b];
if (attempt.Heights[b] < minLineHeight)
{
minLineHeight = attempt.Heights[b];
}
}
float diff = Math.Abs(height - maxHeight);
if (attempt.LineCounts.Length > 1)
{
if (attempt.LineCounts[0] > attempt.LineCounts[1] || (attempt.LineCounts.Length > 2 && attempt.LineCounts[1] > attempt.LineCounts[2]) || (attempt.LineCounts.Length > 3 && attempt.LineCounts[2] > attempt.LineCounts[3]))
{
diff *= 1.5f;
}
}
if (minLineHeight < minWidth)
{
diff *= 1.5f;
}
if (optimal == null || diff < optimalDiff)
{
optimal = attempt;
optimalDiff = diff;
}
}
if (optimal == null)
{
return;
}
int index = 0;
float y = 0.0f;
for (int i = 0; i < optimal.LineCounts.Length; i++)
{
int c = optimal.LineCounts[i];
float lineHeight = optimal.Heights[i];
int spanLeft = _maxSizeWidth;
GroupedMessagePosition posToFix = null;
maxX = Math.Max(maxX, c - 1);
for (int k = 0; k < c; k++)
{
float ratio = croppedRatios[index];
int width = (int)(ratio * lineHeight);
spanLeft -= width;
GroupedMessagePosition pos = _posArray[index];
int flags = 0;
if (i == 0)
{
flags |= POSITION_FLAG_TOP;
}
if (i == optimal.LineCounts.Length - 1)
{
flags |= POSITION_FLAG_BOTTOM;
}
if (k == 0)
{
flags |= POSITION_FLAG_LEFT;
if (isOut)
{
posToFix = pos;
}
}
if (k == c - 1)
{
flags |= POSITION_FLAG_RIGHT;
if (!isOut)
{
posToFix = pos;
}
}
pos.Set(k, k, i, i, width, lineHeight / maxSizeHeight, flags);
index++;
}
posToFix.Width += spanLeft;
posToFix.SpanSize += spanLeft;
y += lineHeight;
}
totalWidth = _maxSizeWidth;
totalHeight = y / maxSizeHeight;
}
int avatarOffset = 108;
for (int a = 0; a < count; a++)
{
//GroupedMessagePosition pos = _posArray[a];
//if (isOut)
//{
// if (pos.MinX == 0)
// {
// pos.SpanSize += firstSpanAdditionalSize;
// }
// if ((pos.Flags & POSITION_FLAG_RIGHT) != 0)
// {
// pos.IsEdge = true;
// }
//}
//else
//{
// if (pos.MaxX == maxX || (pos.Flags & POSITION_FLAG_RIGHT) != 0)
// {
// pos.SpanSize += firstSpanAdditionalSize;
// }
// if ((pos.Flags & POSITION_FLAG_LEFT) != 0)
// {
// pos.IsEdge = true;
// }
//}
//TLMessage messageObject = Messages[a];
//if (!isOut && messageObject.needDrawAvatar())
//{
// if (pos.IsEdge)
// {
// if (pos.SpanSize != 1000)
// {
// pos.SpanSize += avatarOffset;
// }
// pos.Width += avatarOffset;
// }
// else if ((pos.Flags & POSITION_FLAG_RIGHT) != 0)
// {
// if (pos.SpanSize != 1000)
// {
// pos.SpanSize -= avatarOffset;
// }
// else if (pos.LeftSpanOffset != 0)
// {
// pos.LeftSpanOffset += avatarOffset;
// }
// }
//}
}
Width = totalWidth;
Height = totalHeight;
}
private void UpdatePhotoLayout(IMessageMediaGroup media)
{
if (LayoutRoot.Children.Count > 0)
{
_previousPanel = LayoutRoot.Children.FirstOrDefault() as StackPanel;
}
LayoutRoot.Children.Clear();
if (media != null && media.GroupCommon != null && media.GroupCommon.Count > 0)
{
var groupedMessages = new GroupedMessages();
foreach (var messageBase in media.GroupCommon)
{
var message = messageBase as TLMessage;
if (message != null)
{
if (message.IsExpired())
{
continue;
}
groupedMessages.Messages.Add(message);
}
var decryptedMessage = messageBase as TLDecryptedMessage;
if (decryptedMessage != null)
{
//if (decryptedMessage.IsExpired())
//{
// continue;
//}
groupedMessages.Messages.Add(decryptedMessage);
}
}
if (groupedMessages.Messages.Count == 0)
{
}
else if (groupedMessages.Messages.Count == 1)
{
var decryptedMessage = groupedMessages.Messages[0] as TLDecryptedMessage;
if (decryptedMessage != null)
{
var mediaPhoto = decryptedMessage.Media as TLDecryptedMessageMediaPhoto;
if (mediaPhoto != null)
{
var stackPanel = new StackPanel {
Background = new SolidColorBrush(Colors.Transparent)
};
var converter = new PhotoToDimensionConverter();
var width = (double)converter.Convert(mediaPhoto, null, "Width", null);
var height = (double)converter.Convert(mediaPhoto, null, "Height", null);
var groupedMessagePosition = new GroupedMessagePosition();
groupedMessagePosition.Set(0, 0, 0, 0, (int)width, 1.0f, 0);
var position = new KeyValuePair <TLObject, GroupedMessagePosition>(groupedMessages.Messages[0], groupedMessagePosition);
var border = GetControl(_previousPanel, position, 1.0, height, 0.0, 0.0);
stackPanel.Children.Add(border);
if (stackPanel.Children.Count > 0)
{
LayoutRoot.Children.Add(stackPanel);
}
}
if (decryptedMessage.IsVideo())
{
var stackPanel = new StackPanel {
Background = new SolidColorBrush(Colors.Transparent)
};
var width = 230.0;
var height = 145.0;
var groupedMessagePosition = new GroupedMessagePosition();
groupedMessagePosition.Set(0, 0, 0, 0, (int)width, 1.0f, 0);
var position = new KeyValuePair <TLObject, GroupedMessagePosition>(groupedMessages.Messages[0], groupedMessagePosition);
var border = GetControl(_previousPanel, position, 1.0, height, 0.0, 0.0);
stackPanel.Children.Add(border);
if (stackPanel.Children.Count > 0)
{
LayoutRoot.Children.Add(stackPanel);
}
}
}
var message = groupedMessages.Messages[0] as TLMessage;
if (message != null)
{
var mediaPhoto = message.Media as TLMessageMediaPhoto;
if (mediaPhoto != null)
{
var stackPanel = new StackPanel {
Background = new SolidColorBrush(Colors.Transparent)
};
var converter = new PhotoToDimensionConverter();
var width = (double)converter.Convert(mediaPhoto, null, "Width", null);
var height = (double)converter.Convert(mediaPhoto, null, "Height", null);
var groupedMessagePosition = new GroupedMessagePosition();
groupedMessagePosition.Set(0, 0, 0, 0, (int)width, 1.0f, 0);
var position = new KeyValuePair <TLObject, GroupedMessagePosition>(groupedMessages.Messages[0], groupedMessagePosition);
var border = GetControl(_previousPanel, position, 1.0, height, 0.0, 0.0);
stackPanel.Children.Add(border);
if (stackPanel.Children.Count > 0)
{
LayoutRoot.Children.Add(stackPanel);
}
}
var mediaDocument = message.Media as TLMessageMediaDocument;
if (mediaDocument != null)
{
var stackPanel = new StackPanel {
Background = new SolidColorBrush(Colors.Transparent)
};
var width = 230.0;
var height = 145.0;
var groupedMessagePosition = new GroupedMessagePosition();
groupedMessagePosition.Set(0, 0, 0, 0, (int)width, 1.0f, 0);
var position = new KeyValuePair <TLObject, GroupedMessagePosition>(groupedMessages.Messages[0], groupedMessagePosition);
var border = GetControl(_previousPanel, position, 1.0, height, 0.0, 0.0);
stackPanel.Children.Add(border);
if (stackPanel.Children.Count > 0)
{
LayoutRoot.Children.Add(stackPanel);
}
}
}
}
else if (groupedMessages.Messages.Count > 0)
{
var height = 320;
groupedMessages.Calculate(height);
var stackPanel = new StackPanel {
Background = new SolidColorBrush(Colors.Transparent)
};
var positions = groupedMessages.Positions.ToList();
for (var i = 0; i < positions.Count; i++)
{
var position = positions[i];
var top = 0.0;
var left = 0.0;
if (i > 0)
{
var pos = positions[i - 1];
// in one row
if (pos.Value.MinY == position.Value.MinY)
{
top = -(height * pos.Value.Height);
for (var j = i - 1; j >= 0; j--)
{
pos = positions[j];
if (pos.Value.MinY == position.Value.MinY)
{
left += pos.Value.Width;
}
}
}
// in one column
else if (position.Value.SpanSize == groupedMessages.MaxSizeWidth)
{
left = position.Value.LeftSpanOffset;
// find common big message
KeyValuePair <TLObject, GroupedMessagePosition>?leftColumn = null;
for (var j = i - 1; j >= 0; j--)
{
pos = positions[j];
if (pos.Value.SiblingHeights != null)
{
leftColumn = pos;
break;
}
else
{
top += (height * pos.Value.Height);
}
}
// set top
if (leftColumn != null)
{
top -= (leftColumn.Value.Value.Height * height);
}
else
{
top = 0;
}
}
}
var border = GetControl(_previousPanel, position, 0.65, height, left, top);
stackPanel.Children.Add(border);
}
if (stackPanel.Children.Count > 0)
{
LayoutRoot.Children.Add(stackPanel);
}
}
}
}