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NaBian committed 2020-09-05 14:51:27 +08:00
1 parent 0cc7c097da
commit d07e1a3d87
1 file changed
+147 -50
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src/Shared/HandyControl_Shared/Controls/Panel/FlexPanel.cs
+147 -50
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@@ -6,6 +6,7 @@ using System.Windows.Media;
using HandyControl.Data;
using HandyControl.Expression.Drawing;
using HandyControl.Tools;
using HandyControl.Tools.Extension;
namespace HandyControl.Controls
{
@@ -20,7 +21,8 @@ namespace HandyControl.Controls
#region Item
public static readonly DependencyProperty OrderProperty = DependencyProperty.RegisterAttached(
"Order", typeof(int), typeof(FlexPanel), new FrameworkPropertyMetadata(ValueBoxes.Int0Box, OnItemPropertyChanged));
"Order", typeof(int), typeof(FlexPanel),
new FrameworkPropertyMetadata(ValueBoxes.Int0Box, OnItemPropertyChanged));
public static void SetOrder(DependencyObject element, int value)
=> element.SetValue(OrderProperty, value);
@@ -29,7 +31,9 @@ namespace HandyControl.Controls
=> (int)element.GetValue(OrderProperty);
public static readonly DependencyProperty FlexGrowProperty = DependencyProperty.RegisterAttached(
"FlexGrow", typeof(double), typeof(FlexPanel), new FrameworkPropertyMetadata(ValueBoxes.Double0Box, OnItemPropertyChanged), ValidateHelper.IsInRangeOfPosDoubleIncludeZero);
"FlexGrow", typeof(double), typeof(FlexPanel),
new FrameworkPropertyMetadata(ValueBoxes.Double0Box, OnItemPropertyChanged),
ValidateHelper.IsInRangeOfPosDoubleIncludeZero);
public static void SetFlexGrow(DependencyObject element, double value)
=> element.SetValue(FlexGrowProperty, value);
@@ -38,7 +42,9 @@ namespace HandyControl.Controls
=> (double)element.GetValue(FlexGrowProperty);
public static readonly DependencyProperty FlexShrinkProperty = DependencyProperty.RegisterAttached(
"FlexShrink", typeof(double), typeof(FlexPanel), new FrameworkPropertyMetadata(ValueBoxes.Double1Box, OnItemPropertyChanged));
"FlexShrink", typeof(double), typeof(FlexPanel),
new FrameworkPropertyMetadata(ValueBoxes.Double1Box, OnItemPropertyChanged),
ValidateHelper.IsInRangeOfPosDoubleIncludeZero);
public static void SetFlexShrink(DependencyObject element, double value)
=> element.SetValue(FlexShrinkProperty, value);
@@ -47,7 +53,8 @@ namespace HandyControl.Controls
=> (double)element.GetValue(FlexShrinkProperty);
public static readonly DependencyProperty FlexBasisProperty = DependencyProperty.RegisterAttached(
"FlexBasis", typeof(double), typeof(FlexPanel), new FrameworkPropertyMetadata(double.NaN, OnItemPropertyChanged));
"FlexBasis", typeof(double), typeof(FlexPanel),
new FrameworkPropertyMetadata(double.NaN, OnItemPropertyChanged));
public static void SetFlexBasis(DependencyObject element, double value)
=> element.SetValue(FlexBasisProperty, value);
@@ -56,7 +63,8 @@ namespace HandyControl.Controls
=> (double)element.GetValue(FlexBasisProperty);
public static readonly DependencyProperty AlignSelfProperty = DependencyProperty.RegisterAttached(
"AlignSelf", typeof(FlexItemAlignment), typeof(FlexPanel), new FrameworkPropertyMetadata(default(FlexItemAlignment), OnItemPropertyChanged));
"AlignSelf", typeof(FlexItemAlignment), typeof(FlexPanel),
new FrameworkPropertyMetadata(default(FlexItemAlignment), OnItemPropertyChanged));
public static void SetAlignSelf(DependencyObject element, FlexItemAlignment value)
=> element.SetValue(AlignSelfProperty, value);
@@ -69,7 +77,8 @@ namespace HandyControl.Controls
=> (FlexItemAlignment)element.GetValue(AlignSelfProperty);
public static readonly DependencyProperty FlexDirectionProperty = DependencyProperty.Register(
"FlexDirection", typeof(FlexDirection), typeof(FlexPanel), new FrameworkPropertyMetadata(default(FlexDirection), FrameworkPropertyMetadataOptions.AffectsMeasure));
"FlexDirection", typeof(FlexDirection), typeof(FlexPanel),
new FrameworkPropertyMetadata(default(FlexDirection), FrameworkPropertyMetadataOptions.AffectsMeasure));
public FlexDirection FlexDirection
{
@@ -78,7 +87,8 @@ namespace HandyControl.Controls
}
public static readonly DependencyProperty FlexWrapProperty = DependencyProperty.Register(
"FlexWrap", typeof(FlexWrap), typeof(FlexPanel), new FrameworkPropertyMetadata(default(FlexWrap), FrameworkPropertyMetadataOptions.AffectsMeasure));
"FlexWrap", typeof(FlexWrap), typeof(FlexPanel),
new FrameworkPropertyMetadata(default(FlexWrap), FrameworkPropertyMetadataOptions.AffectsMeasure));
public FlexWrap FlexWrap
{
@@ -87,7 +97,9 @@ namespace HandyControl.Controls
}
public static readonly DependencyProperty JustifyContentProperty = DependencyProperty.Register(
"JustifyContent", typeof(FlexContentJustify), typeof(FlexPanel), new FrameworkPropertyMetadata(default(FlexContentJustify), FrameworkPropertyMetadataOptions.AffectsMeasure));
"JustifyContent", typeof(FlexContentJustify), typeof(FlexPanel),
new FrameworkPropertyMetadata(default(FlexContentJustify),
FrameworkPropertyMetadataOptions.AffectsMeasure));
public FlexContentJustify JustifyContent
{
@@ -96,7 +108,9 @@ namespace HandyControl.Controls
}
public static readonly DependencyProperty AlignItemsProperty = DependencyProperty.Register(
"AlignItems", typeof(FlexItemsAlignment), typeof(FlexPanel), new FrameworkPropertyMetadata(default(FlexItemsAlignment), FrameworkPropertyMetadataOptions.AffectsMeasure));
"AlignItems", typeof(FlexItemsAlignment), typeof(FlexPanel),
new FrameworkPropertyMetadata(default(FlexItemsAlignment),
FrameworkPropertyMetadataOptions.AffectsMeasure));
public FlexItemsAlignment AlignItems
{
@@ -105,7 +119,9 @@ namespace HandyControl.Controls
}
public static readonly DependencyProperty AlignContentProperty = DependencyProperty.Register(
"AlignContent", typeof(FlexContentAlignment), typeof(FlexPanel), new FrameworkPropertyMetadata(default(FlexContentAlignment), FrameworkPropertyMetadataOptions.AffectsMeasure));
"AlignContent", typeof(FlexContentAlignment), typeof(FlexPanel),
new FrameworkPropertyMetadata(default(FlexContentAlignment),
FrameworkPropertyMetadataOptions.AffectsMeasure));
public FlexContentAlignment AlignContent
{
@@ -143,6 +159,7 @@ namespace HandyControl.Controls
_orderList.Add(new FlexItemInfo(i, GetOrder(child)));
}
_orderList.Sort();
for (var i = 0; i < children.Count; i++)
@@ -150,6 +167,11 @@ namespace HandyControl.Controls
var child = children[_orderList[i].Index];
if (child == null) continue;
var flexBasis = GetFlexBasis(child);
if (!flexBasis.IsNaN())
{
child.SetCurrentValue(WidthProperty, flexBasis);
}
child.Measure(childConstraint);
var sz = new UVSize(FlexDirection, child.DesiredSize);
@@ -260,6 +282,7 @@ namespace HandyControl.Controls
{
freeV -= flexSize.V;
}
var freeItemV = freeV;
// calculate status
@@ -277,13 +300,10 @@ namespace HandyControl.Controls
accumulatedV = FlexWrap == FlexWrap.WrapReverse ? uvFinalSize.V - curLineSizeArr[0].V - lineFreeVArr[0] : 0;
}
break;
case FlexContentAlignment.FlexStart:
if (FlexWrap == FlexWrap.WrapReverse)
{
wrapReverseAdd = 1;
}
wrapReverseAdd = FlexWrap == FlexWrap.WrapReverse ? 0 : 1;
if (_lineCount > 1)
{
accumulatedV = FlexWrap == FlexWrap.WrapReverse ? uvFinalSize.V - curLineSizeArr[0].V : 0;
@@ -292,13 +312,10 @@ namespace HandyControl.Controls
{
wrapReverseAdd = 0;
}
break;
case FlexContentAlignment.FlexEnd:
if (FlexWrap != FlexWrap.WrapReverse)
{
wrapReverseAdd = 1;
}
wrapReverseAdd = FlexWrap == FlexWrap.WrapReverse ? 1 : 0;
if (_lineCount > 1)
{
accumulatedV = FlexWrap == FlexWrap.WrapReverse ? uvFinalSize.V - curLineSizeArr[0].V - freeV : freeV;
@@ -307,12 +324,14 @@ namespace HandyControl.Controls
{
wrapReverseAdd = 0;
}
break;
case FlexContentAlignment.Center:
if (_lineCount > 1)
{
accumulatedV = FlexWrap == FlexWrap.WrapReverse ? uvFinalSize.V - curLineSizeArr[0].V - freeV * 0.5 : freeV * 0.5;
}
break;
case FlexContentAlignment.SpaceBetween:
if (_lineCount > 1)
@@ -325,6 +344,7 @@ namespace HandyControl.Controls
accumulatedV = FlexWrap == FlexWrap.WrapReverse ? uvFinalSize.V - curLineSizeArr[0].V : 0;
}
break;
case FlexContentAlignment.SpaceAround:
if (_lineCount > 1)
@@ -337,6 +357,7 @@ namespace HandyControl.Controls
accumulatedV = FlexWrap == FlexWrap.WrapReverse ? uvFinalSize.V - curLineSizeArr[0].V - freeItemV : freeItemV;
}
break;
}
@@ -371,7 +392,8 @@ namespace HandyControl.Controls
lineIndex++;
itemsU = 0;
if (i >= lastInLineArr[lineIndex]) //the element is wider then the constraint - give it a separate line
if (i >= lastInLineArr[lineIndex]
) //the element is wider then the constraint - give it a separate line
{
//switch to next line which only contain one element
ArrangeLine(new FlexLineInfo
@@ -390,6 +412,7 @@ namespace HandyControl.Controls
lineIndex++;
itemsU = 0;
}
firstInLine = i;
}
}
@@ -420,6 +443,10 @@ namespace HandyControl.Controls
{
var isHorizontal = FlexDirection == FlexDirection.Row || FlexDirection == FlexDirection.RowReverse;
var isReverse = FlexDirection == FlexDirection.RowReverse || FlexDirection == FlexDirection.ColumnReverse;
var itemCount = lineInfo.ItemEndIndex - lineInfo.ItemStartIndex;
var children = InternalChildren;
var lineFreeU = lineInfo.LineU - lineInfo.ItemsU;
var constraintFreeU = _uvConstraint.U - lineInfo.ItemsU;
// calculate initial u
var u = .0;
@@ -439,43 +466,120 @@ namespace HandyControl.Controls
{
u = JustifyContent switch
{
FlexContentJustify.FlexEnd => lineInfo.LineU - lineInfo.ItemsU,
FlexContentJustify.Center => (lineInfo.LineU - lineInfo.ItemsU) * 0.5,
FlexContentJustify.FlexEnd => lineFreeU,
FlexContentJustify.Center => lineFreeU * 0.5,
_ => u
};
}
u *= lineInfo.ScaleU;
// calculate offset u
var itemCount = lineInfo.ItemEndIndex - lineInfo.ItemStartIndex;
var offsetUArr = new double[itemCount];
if (JustifyContent == FlexContentJustify.SpaceBetween)
// apply FlexGrow
var flexGrowUArr = new double[itemCount];
if (constraintFreeU > 0)
{
var freeItemU = (lineInfo.LineU - lineInfo.ItemsU) / (itemCount - 1);
for (var i = 1; i < itemCount; i++)
var ignoreFlexGrow = true;
var flexGrowSum = .0;
for (var i = 0; i < itemCount; i++)
{
offsetUArr[i] = freeItemU;
var flexGrow = GetFlexGrow(children[_orderList[i].Index]);
ignoreFlexGrow &= MathHelper.IsVerySmall(flexGrow);
flexGrowUArr[i] = flexGrow;
flexGrowSum += flexGrow;
}
}
else if (JustifyContent == FlexContentJustify.SpaceAround)
{
var freeItemU = (lineInfo.LineU - lineInfo.ItemsU) / itemCount * 0.5;
offsetUArr[0] = freeItemU;
for (var i = 1; i < itemCount; i++)
if (!ignoreFlexGrow)
{
offsetUArr[i] = freeItemU * 2;
var flexGrowItem = .0;
if (flexGrowSum > 0)
{
flexGrowItem = constraintFreeU / flexGrowSum;
lineInfo.ScaleU = 1;
lineFreeU = 0; //line free U was used up
}
for (var i = 0; i < itemCount; i++)
{
flexGrowUArr[i] *= flexGrowItem;
}
}
else
{
flexGrowUArr = new double[itemCount];
}
}
var children = InternalChildren;
// apply FlexShrink
var flexShrinkUArr = new double[itemCount];
if (constraintFreeU < 0)
{
var ignoreFlexShrink = true;
var flexShrinkSum = .0;
for (var i = 0; i < itemCount; i++)
{
var flexShrink = GetFlexShrink(children[_orderList[i].Index]);
ignoreFlexShrink &= MathHelper.IsVerySmall(flexShrink - 1);
flexShrinkUArr[i] = flexShrink;
flexShrinkSum += flexShrink;
}
if (!ignoreFlexShrink)
{
var flexShrinkItem = .0;
if (flexShrinkSum > 0)
{
flexShrinkItem = constraintFreeU / flexShrinkSum;
lineInfo.ScaleU = 1;
lineFreeU = 0; //line free U was used up
}
for (var i = 0; i < itemCount; i++)
{
flexShrinkUArr[i] *= flexShrinkItem;
}
}
else
{
flexShrinkUArr = new double[itemCount];
}
}
// calculate offset u
var offsetUArr = new double[itemCount];
if (lineFreeU > 0)
{
if (JustifyContent == FlexContentJustify.SpaceBetween)
{
var freeItemU = lineFreeU / (itemCount - 1);
for (var i = 1; i < itemCount; i++)
{
offsetUArr[i] = freeItemU;
}
}
else if (JustifyContent == FlexContentJustify.SpaceAround)
{
var freeItemU = lineFreeU / itemCount * 0.5;
offsetUArr[0] = freeItemU;
for (var i = 1; i < itemCount; i++)
{
offsetUArr[i] = freeItemU * 2;
}
}
}
// arrange item
for (int i = lineInfo.ItemStartIndex, j = 0; i < lineInfo.ItemEndIndex; i++, j++)
{
var child = children[_orderList[i].Index];
if (child == null) continue;
var childSize = new UVSize(FlexDirection, isHorizontal ?
new Size(child.DesiredSize.Width * lineInfo.ScaleU, child.DesiredSize.Height) :
new Size(child.DesiredSize.Width, child.DesiredSize.Height * lineInfo.ScaleU));
var childSize = new UVSize(FlexDirection, isHorizontal
? new Size(child.DesiredSize.Width * lineInfo.ScaleU, child.DesiredSize.Height)
: new Size(child.DesiredSize.Width, child.DesiredSize.Height * lineInfo.ScaleU));
childSize.U += flexGrowUArr[j] + flexShrinkUArr[j];
if (isReverse)
{
@@ -489,15 +593,7 @@ namespace HandyControl.Controls
var v = lineInfo.OffsetV;
var alignSelf = GetAlignSelf(child);
FlexItemsAlignment alignment;
if (alignSelf == FlexItemAlignment.Auto)
{
alignment = AlignItems;
}
else
{
alignment = (FlexItemsAlignment)alignSelf;
}
var alignment = alignSelf == FlexItemAlignment.Auto ? AlignItems : (FlexItemsAlignment)alignSelf;
switch (alignment)
{
@@ -510,6 +606,7 @@ namespace HandyControl.Controls
{
childSize.V = lineInfo.LineV;
}
break;
case FlexItemsAlignment.FlexEnd:
v += lineInfo.LineV - childSize.V;