/// <summary>
/// 布局文本和图片,每调用一次,执行一次布局操作
/// </summary>
/// <param name="layout">布局对象</param>
public static void LayoutTextAndImage(LayoutData layout)
{
if (((layout.ImageSize == Size.Empty) || (layout.Text == null)) || ((layout.Text.Length == 0) || (layout.CurrentTextImageRelation == TextImageRelation.Overlay)))
{
Size imageSize = layout.ImageSize;
Size textSize = GetTextSize(layout, layout.CurrentClientRectangle.Size);
layout.OutImageBounds = LayoutUtils.Align(imageSize, layout.CurrentClientRectangle, layout.CurrentImageAlign);
layout.OutTextBounds = LayoutUtils.Align(textSize, layout.CurrentClientRectangle, layout.CurrentTextAlign);
}
else
{
Size proposedSize = LayoutUtils.SubAlignedRegion(layout.CurrentClientRectangle.Size, layout.ImageSize, layout.CurrentTextImageRelation); //减去图片空间后的大小
Size textSize = GetTextSize(layout, proposedSize); //文本大小
Size textImageSize = LayoutUtils.AddAlignedRegion(textSize, layout.ImageSize, layout.CurrentTextImageRelation); //两个大小相加
Rectangle containerRect = layout.CurrentClientRectangle; //能包含layout.CurrentClientRectangle,textImageSize的最小容器
containerRect.Size = LayoutUtils.UnionSizes(layout.CurrentClientRectangle.Size, textImageSize); //获取两个Size中的最大值(分别计算宽和高)
Rectangle textImageRect = LayoutUtils.Align(textImageSize, containerRect, ContentAlignment.MiddleCenter); //居中
bool imageNoOverlay = (ImageAlignToRelation(layout.CurrentImageAlign) & layout.CurrentTextImageRelation) != TextImageRelation.Overlay;
bool textNoOverlay = (TextAlignToRelation(layout.CurrentTextAlign) & layout.CurrentTextImageRelation) != TextImageRelation.Overlay;
Rectangle imageBounds;
Rectangle textBounds;
if (imageNoOverlay)
{
LayoutUtils.SplitRegion(containerRect, layout.ImageSize, (AnchorStyles)layout.CurrentTextImageRelation, out imageBounds, out textBounds);
}
else if (textNoOverlay)
{
LayoutUtils.SplitRegion(containerRect, textSize, (AnchorStyles)LayoutUtils.GetOppositeTextImageRelation(layout.CurrentTextImageRelation), out textBounds, out imageBounds);
}
else
{
LayoutUtils.SplitRegion(textImageRect, layout.ImageSize, (AnchorStyles)layout.CurrentTextImageRelation, out imageBounds, out textBounds);
LayoutUtils.ExpandRegionsToFillBounds(containerRect, (AnchorStyles)layout.CurrentTextImageRelation, ref imageBounds, ref textBounds);//扩展
}
layout.OutImageBounds = LayoutUtils.Align(layout.ImageSize, imageBounds, layout.CurrentImageAlign);
layout.OutTextBounds = LayoutUtils.Align(textSize, textBounds, layout.CurrentTextAlign);
}
//调整
switch (layout.CurrentTextImageRelation)
{
case TextImageRelation.TextBeforeImage:
case TextImageRelation.ImageBeforeText:
{
int num = Math.Min(layout.OutTextBounds.Bottom, layout.CurrentClientRectangle.Bottom);
layout.OutTextBounds.Y = Math.Max(Math.Min(layout.OutTextBounds.Y, layout.CurrentClientRectangle.Y + ((layout.CurrentClientRectangle.Height - layout.OutTextBounds.Height) / 2)), layout.CurrentClientRectangle.Y);
layout.OutTextBounds.Height = num - layout.OutTextBounds.Y;
break;
}
case TextImageRelation.TextAboveImage:
case TextImageRelation.ImageAboveText:
{
int num2 = Math.Min(layout.OutTextBounds.Right, layout.CurrentClientRectangle.Right);
layout.OutTextBounds.X = Math.Max(Math.Min(layout.OutTextBounds.X, layout.CurrentClientRectangle.X + ((layout.CurrentClientRectangle.Width - layout.OutTextBounds.Width) / 2)), layout.CurrentClientRectangle.X);
layout.OutTextBounds.Width = num2 - layout.OutTextBounds.X;
break;
}
default:
break;
}
if ((layout.CurrentTextImageRelation == TextImageRelation.ImageBeforeText) && (layout.OutImageBounds.Size.Width != 0))
{
layout.OutImageBounds.Width = Math.Max(0, Math.Min(layout.CurrentClientRectangle.Width - layout.OutTextBounds.Width, layout.OutImageBounds.Width));
layout.OutTextBounds.X = layout.OutImageBounds.X + layout.OutImageBounds.Width;
}
if ((layout.CurrentTextImageRelation == TextImageRelation.ImageAboveText) && (layout.OutImageBounds.Size.Height != 0))
{
layout.OutImageBounds.Height = Math.Max(0, Math.Min(layout.CurrentClientRectangle.Height - layout.OutTextBounds.Height, layout.OutImageBounds.Height));
layout.OutTextBounds.Y = layout.OutImageBounds.Y + layout.OutImageBounds.Height;
}
layout.OutTextBounds = Rectangle.Intersect(layout.OutTextBounds, layout.CurrentClientRectangle);
//
int num3 = Math.Min(layout.OutTextBounds.Bottom, layout.CurrentClientRectangle.Bottom);
layout.OutTextBounds.Y = Math.Max(layout.OutTextBounds.Y, layout.CurrentClientRectangle.Y);
layout.OutTextBounds.Height = num3 - layout.OutTextBounds.Y;
//偏移
layout.OutImageBounds.Offset(layout.ImageOffset);
layout.OutTextBounds.Offset(layout.TextOffset);
}
/// <summary>
/// 测试文本大小
/// </summary>
/// <param name="layout">布局对象</param>
/// <param name="proposedSize">可提供的大小</param>
/// <returns>文本大小</returns>
public static Size GetTextSize(LayoutData layout, Size proposedSize)
{
return(Size.Ceiling(layout.Graphics.MeasureString(layout.Text, layout.Font, new SizeF((float)proposedSize.Width, (float)proposedSize.Height), layout.CurrentStringFormat)));
}