public override void clear()
{
this.textBlob = null;
ObjectPool <uiMeshMesh> .release(this._mesh);
this._mesh = null;
this._resolved = false;
}
public void drawTextBlob(TextBlob textBlob, Offset offset, Paint paint)
{
this._recorder.addDrawCmd(new DrawTextBlob {
textBlob = textBlob,
offset = offset,
paint = new Paint(paint),
});
}
public void drawTextBlob(TextBlob textBlob, Offset offset, Paint paint)
{
this._recorder.addDrawCmd(uiDrawTextBlob.create(
textBlob: textBlob,
offset: uiOffset.fromOffset(offset),
paint: uiPaint.fromPaint(paint)
));
}
public TextBlob make()
{
var result = new TextBlob(this._text, this._textOffset,
this._size, this.positions, this._bounds, this._style);
this.positions = null;
return(result);
}
public static TextBlobMesh create(TextBlob textBlob, float scale, uiMatrix3 matrix)
{
TextBlobMesh newMesh = ObjectPool <TextBlobMesh> .alloc();
newMesh.textBlob = textBlob;
newMesh.scale = scale;
newMesh.matrix = matrix;
return(newMesh);
}
void _drawTextBlob(TextBlob textBlob, Offset offset, Paint paint)
{
D.assert(textBlob != null);
D.assert(offset != null);
D.assert(paint != null);
var state = this._currentLayer.currentState;
var scale = state.scale * this._devicePixelRatio;
var matrix = new Matrix3(state.matrix);
matrix.preTranslate(offset.dx, offset.dy);
var mesh = new TextBlobMesh(textBlob, scale, matrix);
// request font texture so text mesh could be generated correctly
var font = FontManager.instance.getOrCreate(textBlob.style.fontFamily).font;
var style = textBlob.style;
var fontSizeToLoad = Mathf.CeilToInt(style.UnityFontSize * scale);
var subText = textBlob.text.Substring(textBlob.textOffset, textBlob.textSize);
font.RequestCharactersInTexture(subText, fontSizeToLoad, style.UnityFontStyle);
var tex = font.material.mainTexture;
Action <Paint> drawMesh = (Paint p) => {
if (!this._applyClip(textBlob.bounds))
{
return;
}
var layer = this._currentLayer;
layer.draws.Add(CanvasShader.texAlpha(layer, p, mesh, tex));
};
if (paint.maskFilter != null && paint.maskFilter.sigma != 0)
{
this._drawWithMaskFilter(textBlob.bounds, drawMesh, paint, paint.maskFilter);
return;
}
drawMesh(paint);
}
void _drawTextBlob(TextBlob textBlob, Offset offset, Paint paint)
{
D.assert(textBlob != null);
D.assert(offset != null);
D.assert(paint != null);
var state = this._currentLayer.currentState;
var scale = state.scale * this._devicePixelRatio;
var matrix = new Matrix3(state.matrix);
matrix.preTranslate(offset.dx, offset.dy);
var mesh = MeshGenerator.generateMesh(textBlob, scale)?.transform(matrix);
if (mesh == null)
{
return;
}
var font = FontManager.instance.getOrCreate(textBlob.style.fontFamily).font;
var tex = font.material.mainTexture;
Action <Paint> drawMesh = (Paint p) => {
if (!this._applyClip(mesh.bounds))
{
return;
}
var layer = this._currentLayer;
layer.draws.Add(CanvasShader.texAlpha(layer, p, mesh, tex));
};
if (paint.maskFilter != null && paint.maskFilter.sigma != 0)
{
this._drawWithMaskFilter(mesh.bounds, drawMesh, paint, paint.maskFilter);
return;
}
drawMesh(paint);
}
void _drawTextBlob(TextBlob textBlob, uiOffset offset, uiPaint paint)
{
D.assert(textBlob != null);
var state = this._currentLayer.currentState;
var scale = state.scale * this._devicePixelRatio;
var matrix = new uiMatrix3(state.matrix.Value);
matrix.preTranslate(offset.dx, offset.dy);
var mesh = TextBlobMesh.create(textBlob, scale, matrix);
var textBlobBounds = matrix.mapRect(uiRectHelper.fromRect(textBlob.boundsInText));
// request font texture so text mesh could be generated correctly
var style = textBlob.style;
var font = FontManager.instance.getOrCreate(style.fontFamily, style.fontWeight, style.fontStyle).font;
var fontSizeToLoad = Mathf.CeilToInt(style.UnityFontSize * scale);
var subText = textBlob.text.Substring(textBlob.textOffset, textBlob.textSize);
Texture tex = null;
bool notEmoji = !char.IsHighSurrogate(subText[0]) && !EmojiUtils.isSingleCharEmoji(subText[0]);
if (notEmoji)
{
font.RequestCharactersInTextureSafe(subText, fontSizeToLoad, style.UnityFontStyle);
tex = font.material.mainTexture;
}
if (paint.maskFilter != null && paint.maskFilter.Value.sigma != 0)
{
this._drawWithMaskFilter(textBlobBounds, paint, paint.maskFilter.Value, null, false, 0, tex,
textBlobBounds, mesh, notEmoji, this.___drawTextDrawMeshCallback);
return;
}
this._drawTextDrawMeshCallback(paint, null, false, 0, tex, textBlobBounds, mesh, notEmoji);
}
public TextBlobMesh(TextBlob textBlob, float scale, Matrix3 transform)
{
this._textBlob = textBlob;
this._scale = scale;
this._transform = transform;
}
public static MeshMesh generateMesh(TextBlob textBlob, float scale)
{
var style = textBlob.style;
var fontInfo = FontManager.instance.getOrCreate(style.fontFamily);
var key = new MeshKey(textBlob.instanceId, scale);
_meshes.TryGetValue(key, out var meshInfo);
if (meshInfo != null && meshInfo.textureVersion == fontInfo.textureVersion)
{
meshInfo.touch();
return(meshInfo.mesh);
}
var font = fontInfo.font;
var length = textBlob.textSize;
var text = textBlob.text;
var fontSizeToLoad = Mathf.CeilToInt(style.UnityFontSize * scale);
var subText = textBlob.text.Substring(textBlob.textOffset, textBlob.textSize);
font.RequestCharactersInTexture(subText, fontSizeToLoad, style.UnityFontStyle);
var vertices = new List <Vector3>(length * 4);
var triangles = new List <int>(length * 6);
var uv = new List <Vector2>(length * 4);
for (int charIndex = 0; charIndex < length; ++charIndex)
{
var ch = text[charIndex + textBlob.textOffset];
// first char as origin for mesh position
var position = textBlob.positions[charIndex];
if (LayoutUtils.isWordSpace(ch) || LayoutUtils.isLineEndSpace(ch) || ch == '\t')
{
continue;
}
CharacterInfo charInfo;
font.GetCharacterInfo(ch, out charInfo, fontSizeToLoad, style.UnityFontStyle);
var minX = charInfo.minX / scale;
var maxX = charInfo.maxX / scale;
var minY = charInfo.minY / scale;
var maxY = charInfo.maxY / scale;
var baseIndex = vertices.Count;
vertices.Add(new Vector3((float)(position.x + minX), (float)(position.y - maxY), 0));
vertices.Add(new Vector3((float)(position.x + maxX), (float)(position.y - maxY), 0));
vertices.Add(new Vector3((float)(position.x + maxX), (float)(position.y - minY), 0));
vertices.Add(new Vector3((float)(position.x + minX), (float)(position.y - minY), 0));
triangles.Add(baseIndex);
triangles.Add(baseIndex + 1);
triangles.Add(baseIndex + 2);
triangles.Add(baseIndex);
triangles.Add(baseIndex + 2);
triangles.Add(baseIndex + 3);
uv.Add(charInfo.uvTopLeft);
uv.Add(charInfo.uvTopRight);
uv.Add(charInfo.uvBottomRight);
uv.Add(charInfo.uvBottomLeft);
}
if (vertices.Count == 0)
{
return(null);
}
MeshMesh mesh = vertices.Count > 0 ? new MeshMesh(null, vertices, triangles, uv) : null;
_meshes[key] = new MeshInfo(key, mesh, fontInfo.textureVersion);
return(mesh);
}
public TextBlobMesh(TextBlob textBlob, float scale, Matrix3 matrix)
{
this.textBlob = textBlob;
this.scale = scale;
this.matrix = matrix;
}
