/// <summary>
/// 解析精灵和精灵动画占位符信息
/// </summary>
/// <param name="str">字符串</param>
public void ParsingSprite(string str)
{
//解析标签属性
m_QuadPlaceHolderInfos.Clear();
foreach (Match match in RichTextConst.SpriteRegex.Matches(str))
{
QuadPlaceholder teamQuadInfo = new QuadPlaceholder();
teamQuadInfo.isAnimate = false;
teamQuadInfo.sprite = match.Groups[1].Value;
teamQuadInfo.length = match.Length;
teamQuadInfo.index = match.Index * 4;
teamQuadInfo.size = new Vector2(fontSize, fontSize);
m_QuadPlaceHolderInfos.Add(teamQuadInfo.index, teamQuadInfo);
}
foreach (Match match in RichTextConst.AnimateRegex.Matches(str))
{
QuadPlaceholder teamQuadInfo = new QuadPlaceholder();
teamQuadInfo.isAnimate = true;
teamQuadInfo.sprite = "1";
teamQuadInfo.rate = int.Parse(match.Groups[2].Value);
teamQuadInfo.animateName = match.Groups[1].Value;
teamQuadInfo.length = match.Length;
teamQuadInfo.index = match.Index * 4;
teamQuadInfo.size = new Vector2(fontSize, fontSize);
m_QuadPlaceHolderInfos.Add(teamQuadInfo.index, teamQuadInfo);
}
}
/// <summary>
/// 生成uv信息
/// </summary>
/// <param name="info"></param>
/// <param name="startVertex"></param>
/// <param name="unitsPerPixel"></param>
/// <returns></returns>
public int GenerateVertices(QuadPlaceholder info, Vector3 postion, int startVertex, float unitsPerPixel)
{
TextMeshInfo tempUv = new TextMeshInfo();
tempUv.startPos = postion * unitsPerPixel;
//设置图片的位置
tempUv.vertices = new Vector3[4];
tempUv.vertices[0] = new Vector3(0, 0, 0) + tempUv.startPos;
tempUv.vertices[1] = new Vector3(info.size.x, info.size.y, 0) + tempUv.startPos;
tempUv.vertices[2] = new Vector3(info.size.x, 0, 0) + tempUv.startPos;
tempUv.vertices[3] = new Vector3(0, info.size.y, 0) + tempUv.startPos;
TexturePackSprite sprite = null;
if (info.isAnimate)
{
RichTextAnimate textAnimate = textSpriteAsset.GetAnimateListByName(info.animateName);
if (textAnimate != null)
{
sprite = textAnimate.spriteList[0];
}
}
else if (textSpriteAsset.spriteInfoList != null)
{
int index = int.Parse(info.sprite);
if (textSpriteAsset.spriteInfoList.Count > index)
{
sprite = textSpriteAsset.spriteInfoList[index];
}
}
Vector2 texSize = Vector2.zero;
if (sprite == null)
{
startVertex += 4 * info.length - 1;
return(startVertex);
}
//计算其uv
texSize = new Vector2(textSpriteAsset.spriteSheet.width, textSpriteAsset.spriteSheet.height);
tempUv.uv = new Vector2[4];
if (!sprite.rotated)
{
tempUv.uv[0] = new Vector2(sprite.x / texSize.x, sprite.y / texSize.y);
tempUv.uv[1] = new Vector2((sprite.x + sprite.width) / texSize.x, (sprite.y + sprite.width) / texSize.y);
tempUv.uv[2] = new Vector2((sprite.x + sprite.width) / texSize.x, sprite.y / texSize.y);
tempUv.uv[3] = new Vector2(sprite.x / texSize.x, (sprite.y + sprite.width) / texSize.y);
}
else
{
tempUv.uv[0] = new Vector2(sprite.x / texSize.x, sprite.y / texSize.y);
tempUv.uv[1] = new Vector2((sprite.x + sprite.width) / texSize.x, (sprite.y + sprite.width) / texSize.y);
tempUv.uv[2] = new Vector2((sprite.x + sprite.width) / texSize.x, sprite.y / texSize.y);
tempUv.uv[3] = new Vector2(sprite.x / texSize.x, (sprite.y + sprite.width) / texSize.y);
}
//声明三角顶点所需要的数组
tempUv.triangles = new int[6];
startVertex += 4 * info.length - 1;
RendererInfo rendererInfo = new RendererInfo();
rendererInfo.uvInfo = tempUv;
rendererInfo.placeholder = info;
m_RendererInfo.Add(rendererInfo);
return(startVertex);
}
/// <summary>
/// 重写绘制
/// </summary>
/// <param name="toFill">模型</param>
protected override void OnPopulateMesh(VertexHelper toFill)
{
if (font == null)
{
return;
}
// We don't care if we the font Texture changes while we are doing our Update.
// The end result of cachedTextGenerator will be valid for this instance.
// Otherwise we can get issues like Case 619238.
m_DisableFontTextureRebuiltCallback = true;
Vector2 extents = rectTransform.rect.size;
var settings = GetGenerationSettings(extents);
bool error = cachedTextGenerator.PopulateWithErrors(m_Content, settings, gameObject);
// Apply the offset to the vertices
IList <UIVertex> verts = cachedTextGenerator.verts;
float unitsPerPixel = 1 / pixelsPerUnit;
//Last 4 verts are always a new line... (\n)
int vertCount = verts.Count - 4;
Vector2 roundingOffset = new Vector2(verts[0].position.x, verts[0].position.y) * unitsPerPixel;
roundingOffset = PixelAdjustPoint(roundingOffset) - roundingOffset;
toFill.Clear();
//偏移情况，目前不考虑
if (roundingOffset != Vector2.zero)
{
for (int i = 0; i < vertCount; ++i)
{
int tempVertsIndex = i & 3;
m_TempVerts[tempVertsIndex] = verts[i];
m_TempVerts[tempVertsIndex].position *= unitsPerPixel;
m_TempVerts[tempVertsIndex].position.x += roundingOffset.x;
m_TempVerts[tempVertsIndex].position.y += roundingOffset.y;
if (tempVertsIndex == 3)
{
toFill.AddUIVertexQuad(m_TempVerts);
}
}
}
else
{ //绘制表情替换占位符的顶点
m_TextureUvInfos.Clear();
if (m_RichTextSpriteRender != null)
{
m_RichTextSpriteRender.Clear();
}
for (int idx = 0; idx < vertCount; idx++)
{
QuadPlaceholder info = null;
if (m_RichTextSpriteRender != null && supportRichText && m_QuadPlaceHolderInfos.TryGetValue(idx, out info))
{
//占位符的其实定点在左上角，+3 第四个顶点在左下角
if (verts.Count <= info.index + 3)
{
continue;
}
idx = m_RichTextSpriteRender.GenerateVertices(info, verts[info.index + 3].position, idx, unitsPerPixel);
}
else
{ //继续绘制字体
int tempVertsIndex = idx & 3;
m_TempVerts[tempVertsIndex] = verts[idx];
m_TempVerts[tempVertsIndex].position *= unitsPerPixel;
if (tempVertsIndex == 3)
{
toFill.AddUIVertexQuad(m_TempVerts);
}
}
}
}
m_DisableFontTextureRebuiltCallback = false;
if (!supportRichText)
{
return;
}
//绘制下划线
if (m_UnderLineInfos != null && m_UnderLineInfos.Count > 0)
{
OnDrawUnderLine(toFill, settings, verts);
}
if (m_LinkInfos != null && m_LinkInfos.Count > 0)
{
OnDealLinkerBoundsBox(toFill, verts);
}
//网格重绘
if (m_TextureUvInfos != null && m_RichTextSpriteRender != null)
{
m_RichTextSpriteRender.Draw();
}
}