void _showCaretOnScreen()
{
if (this._showCaretOnScreenScheduled)
{
return;
}
this._showCaretOnScreenScheduled = true;
SchedulerBinding.instance.addPostFrameCallback(_ => {
this._showCaretOnScreenScheduled = false;
if (this._currentCaretRect == null || !this._scrollController.hasClients)
{
return;
}
float scrollOffsetForCaret = this._getScrollOffsetForCaret(this._currentCaretRect);
this._scrollController.animateTo(scrollOffsetForCaret,
duration: _caretAnimationDuration,
curve: _caretAnimationCurve);
Rect newCaretRect = this._getCaretRectAtScrollOffset(this._currentCaretRect, scrollOffsetForCaret);
// Enlarge newCaretRect by scrollPadding to ensure that caret is not positioned directly at the edge after scrolling.
Rect inflatedRect = Rect.fromLTRB(
newCaretRect.left - this.widget.scrollPadding.left,
newCaretRect.top - this.widget.scrollPadding.top,
newCaretRect.right + this.widget.scrollPadding.right,
newCaretRect.bottom + this.widget.scrollPadding.bottom
);
this._editableKey.currentContext.findRenderObject().showOnScreen(
rect: inflatedRect,
duration: _caretAnimationDuration,
curve: _caretAnimationCurve
);
});
}
public Rect getRowBox(int row)
{
D.assert(row >= 0);
D.assert(row < rows);
D.assert(!debugNeedsLayout);
return(Rect.fromLTRB(0.0f, _rowTops[row], size.width, _rowTops[row + 1]));
}
Rect _adjustRect(Rect rect)
{
if (circleness == 0.0 || rect.width == rect.height)
{
return(rect);
}
if (rect.width < rect.height)
{
float delta = circleness * (rect.height - rect.width) / 2.0f;
return(Rect.fromLTRB(
rect.left,
rect.top + delta,
rect.right,
rect.bottom - delta
));
}
else
{
float delta = circleness * (rect.width - rect.height) / 2.0f;
return(Rect.fromLTRB(
rect.left + delta,
rect.top,
rect.right - delta,
rect.bottom
));
}
}
Rect getRowBox(int row)
{
D.assert(row >= 0);
D.assert(row < this.rows);
return(Rect.fromLTRB(0.0f, this._rowTops[row], this.size.width, this._rowTops[row + 1]));
}
public override void paint(PaintingContext context, Offset offset)
{
Canvas canvas = context.canvas;
float currentValue = _state.position.value;
float currentReactionValue = _state._reaction.value;
float visualPosition = 0.0f;
switch (textDirection)
{
case TextDirection.rtl:
visualPosition = 1.0f - currentValue;
break;
case TextDirection.ltr:
visualPosition = currentValue;
break;
}
Paint paint = new Paint()
{
color = Color.lerp(trackColor, activeColor, currentValue)
};
Rect trackRect = Rect.fromLTWH(
offset.dx + (size.width - CupertinoSwitchUtils._kTrackWidth) / 2.0f,
offset.dy + (size.height - CupertinoSwitchUtils._kTrackHeight) / 2.0f,
CupertinoSwitchUtils._kTrackWidth,
CupertinoSwitchUtils._kTrackHeight
);
RRect trackRRect = RRect.fromRectAndRadius(trackRect, Radius.circular(CupertinoSwitchUtils._kTrackRadius));
canvas.drawRRect(trackRRect, paint);
float currentThumbExtension = CupertinoThumbPainter.extension * currentReactionValue;
float thumbLeft = MathUtils.lerpNullableFloat(
trackRect.left + CupertinoSwitchUtils._kTrackInnerStart - CupertinoThumbPainter.radius,
trackRect.left + CupertinoSwitchUtils._kTrackInnerEnd - CupertinoThumbPainter.radius -
currentThumbExtension,
visualPosition
);
float thumbRight = MathUtils.lerpNullableFloat(
trackRect.left + CupertinoSwitchUtils._kTrackInnerStart + CupertinoThumbPainter.radius +
currentThumbExtension,
trackRect.left + CupertinoSwitchUtils._kTrackInnerEnd + CupertinoThumbPainter.radius,
visualPosition
);
float thumbCenterY = offset.dy + size.height / 2.0f;
Rect thumbBounds = Rect.fromLTRB(
thumbLeft,
thumbCenterY - CupertinoThumbPainter.radius,
thumbRight,
thumbCenterY + CupertinoThumbPainter.radius
);
context.pushClipRRect(needsCompositing, Offset.zero, thumbBounds, trackRRect,
(PaintingContext innerContext, Offset offset1) => {
CupertinoThumbPainter.switchThumb().paint(innerContext.canvas, thumbBounds);
});
}
public Rect toRect(Rect container)
{
return(Rect.fromLTRB(
this.left + container.left,
this.top + container.top,
container.right - this.right,
container.bottom - this.bottom));
}
public Rect toSize(Size container)
{
return(Rect.fromLTRB(
left,
top,
container.width - right,
container.height - bottom));
}
public Rect toSize(Size container)
{
return(Rect.fromLTRB(
this.left,
this.top,
container.width - this.right,
container.height - this.bottom));
}
public static Rect fromCenter(Offset center, float width, float height)
{
return(Rect.fromLTRB(
center.dx - width / 2,
center.dy - height / 2,
center.dx + width / 2,
center.dy + height / 2
));
}
public GlyphInfo(CharacterInfo info)
{
this.rect = Rect.fromLTRB(info.minX, -info.maxY, info.maxX, -info.minY);
this.advance = info.advance;
this.glyphHeight = info.glyphHeight;
this.uvTopLeft = info.uvTopLeft;
this.uvTopRight = info.uvTopRight;
this.uvBottomLeft = info.uvBottomLeft;
this.uvBottomRight = info.uvBottomRight;
}
public override void paint(
PaintingContext context,
Offset offset,
RenderBox parentBox = null,
SliderThemeData sliderTheme = null,
Animation <float> enableAnimation = null,
Offset thumbCenter = null,
bool?isEnabled = null,
bool?isDiscrete = null)
{
if (sliderTheme.trackHeight == 0)
{
return;
}
ColorTween activeTrackColorTween = new ColorTween(begin: sliderTheme.disabledActiveTrackColor,
end: sliderTheme.activeTrackColor);
ColorTween inactiveTrackColorTween = new ColorTween(begin: sliderTheme.disabledInactiveTrackColor,
end: sliderTheme.inactiveTrackColor);
Paint activePaint = new Paint {
color = activeTrackColorTween.evaluate(enableAnimation)
};
Paint inactivePaint = new Paint {
color = inactiveTrackColorTween.evaluate(enableAnimation)
};
Paint leftTrackPaint = activePaint;
Paint rightTrackPaint = inactivePaint;
float horizontalAdjustment = 0.0f;
if (!isEnabled.Value)
{
float disabledThumbRadius = sliderTheme.thumbShape.getPreferredSize(false, isDiscrete).width / 2.0f;
float gap = this.disabledThumbGapWidth * (1.0f - enableAnimation.value);
horizontalAdjustment = disabledThumbRadius + gap;
}
Rect trackRect = this.getPreferredRect(
parentBox: parentBox,
offset: offset,
sliderTheme: sliderTheme,
isEnabled: isEnabled,
isDiscrete: isDiscrete
);
Rect leftTrackSegment = Rect.fromLTRB(trackRect.left, trackRect.top, thumbCenter.dx - horizontalAdjustment,
trackRect.bottom);
context.canvas.drawRect(leftTrackSegment, leftTrackPaint);
Rect rightTrackSegment = Rect.fromLTRB(thumbCenter.dx + horizontalAdjustment, trackRect.top,
trackRect.right, trackRect.bottom);
context.canvas.drawRect(rightTrackSegment, rightTrackPaint);
}
void paintBackground(Canvas canvas, PaintRecord record, Offset baseOffset)
{
if (record.style.background == null)
{
return;
}
var metrics = record.metrics;
Rect rect = Rect.fromLTRB(0, metrics.ascent, record.runWidth, metrics.descent);
rect = rect.shift(record.shiftedOffset(baseOffset));
canvas.drawRect(rect, record.style.background);
}
Rect _getRectFromUpstream(int offset, Rect caretPrototype)
{
string flattenedText = _text.toPlainText(includePlaceholders: false);
var prevCodeUnit = _text.codeUnitAt(Mathf.Max(0, offset - 1));
if (prevCodeUnit == null)
{
return(null);
}
bool needsSearch = _isUtf16Surrogate(prevCodeUnit.Value) || _text.codeUnitAt(offset) == _zwjUtf16 ||
_isUnicodeDirectionality(prevCodeUnit);
int graphemeClusterLength = needsSearch ? 2 : 1;
List <TextBox> boxes = null;
while ((boxes == null || boxes.isEmpty()) && flattenedText != null)
{
int prevRuneOffset = offset - graphemeClusterLength;
boxes = _paragraph.getBoxesForRange(prevRuneOffset, offset, boxHeightStyle: BoxHeightStyle.strut);
if (boxes.isEmpty())
{
if (!needsSearch)
{
break;
}
if (prevRuneOffset < -flattenedText.Length)
{
break;
}
graphemeClusterLength *= 2;
continue;
}
TextBox box = boxes[0];
const int NEWLINE_CODE_UNIT = 10;
if (prevCodeUnit == NEWLINE_CODE_UNIT)
{
return(Rect.fromLTRB(_emptyOffset.dx, box.bottom,
_emptyOffset.dx, box.bottom + box.bottom - box.top));
}
float caretEnd = box.end;
float dx = box.direction == TextDirection.rtl ? caretEnd - caretPrototype.width : caretEnd;
return(Rect.fromLTRB(Mathf.Min(dx, _paragraph.width()), box.top,
Mathf.Min(dx, _paragraph.width()), box.bottom));
}
return(null);
}
public static Rect transformRect(Matrix4x4 transform, Rect rect)
{
Offset point1 = transformPoint(transform, rect.topLeft);
Offset point2 = transformPoint(transform, rect.topRight);
Offset point3 = transformPoint(transform, rect.bottomLeft);
Offset point4 = transformPoint(transform, rect.bottomRight);
return(Rect.fromLTRB(
_min4(point1.dx, point2.dx, point3.dx, point4.dx),
_min4(point1.dy, point2.dy, point3.dy, point4.dy),
_max4(point1.dx, point2.dx, point3.dx, point4.dx),
_max4(point1.dy, point2.dy, point3.dy, point4.dy)
));
}
internal static Rect _safeTransformRect(Matrix4 transform, Rect rect)
{
float[] storage = transform.storage;
bool isAffine = storage[3] == 0.0 &&
storage[7] == 0.0 &&
storage[15] == 1.0;
_minMax = _minMax ?? new float[4];
_accumulate(storage, rect.left, rect.top, true, isAffine);
_accumulate(storage, rect.right, rect.top, false, isAffine);
_accumulate(storage, rect.left, rect.bottom, false, isAffine);
_accumulate(storage, rect.right, rect.bottom, false, isAffine);
return(Rect.fromLTRB(_minMax[0], _minMax[1], _minMax[2], _minMax[3]));
}
public void addPerformanceOverlay(int enabledOptions, Rect bounds)
{
if (this._currentLayer == null)
{
return;
}
var layer = new PerformanceOverlayLayer(enabledOptions);
layer.paintBounds = Rect.fromLTRB(
bounds.left,
bounds.top,
bounds.right,
bounds.bottom
);
this._currentLayer.add(layer);
}
public void doLayout(float offset, string text, int start, int count, TextStyle style)
{
this._text = text;
this._advances.Clear();
this._positions.Clear();
this._count = count;
var font = FontManager.instance.getOrCreate(style.fontFamily).font;
font.RequestCharactersInTexture(this._text.Substring(start, count),
style.UnityFontSize,
style.UnityFontStyle);
this._advance = 0;
this._bounds = null;
for (int i = 0; i < count; i++)
{
int charIndex = start + i;
var ch = text[charIndex];
CharacterInfo characterInfo;
font.GetCharacterInfo(ch, out characterInfo, style.UnityFontSize, style.UnityFontStyle);
var rect = Rect.fromLTRB(characterInfo.minX, -characterInfo.maxY, characterInfo.maxX,
-characterInfo.minY);
rect = rect.translate(this._advance, 0);
if (this._bounds == null || this._bounds.isEmpty)
{
this._bounds = rect;
}
else
{
this._bounds = this._bounds.expandToInclude(rect);
}
this._positions.Add(this._advance);
float advance = characterInfo.advance;
if (ch == '\t')
{
advance = this._tabStops.nextTab((this._advance + offset)) - this._advance;
}
this._advances.Add(advance);
this._advance += advance;
}
}
Rect _getRectFromDownStream(int offset, Rect caretPrototype)
{
string flattenedText = _text.toPlainText(includePlaceholders: false);
var nextCodeUnit =
_text.codeUnitAt(Mathf.Min(offset, flattenedText == null ? 0 : flattenedText.Length - 1));
if (nextCodeUnit == null)
{
return(null);
}
bool needsSearch = _isUtf16Surrogate(nextCodeUnit.Value) || nextCodeUnit == _zwjUtf16;
int graphemeClusterLength = needsSearch ? 2 : 1;
List <TextBox> boxes = null;
while ((boxes == null || boxes.isEmpty()) && flattenedText != null)
{
int nextRuneOffset = offset + graphemeClusterLength;
boxes = _paragraph.getBoxesForRange(offset, nextRuneOffset, boxHeightStyle: BoxHeightStyle.strut);
if (boxes.isEmpty())
{
if (!needsSearch)
{
break;
}
if (nextRuneOffset >= flattenedText.Length << 1)
{
break;
}
graphemeClusterLength *= 2;
continue;
}
TextBox box = boxes[boxes.Count - 1];
float caretStart = box.start;
float dx = box.direction == TextDirection.rtl ? caretStart - caretPrototype.width : caretStart;
return(Rect.fromLTRB(Mathf.Min(dx, _paragraph.width()), box.top,
Mathf.Min(dx, _paragraph.width()), box.bottom));
}
return(null);
}
public override void paint(Canvas canvas, Size size)
{
float selectedItemOffset = getSelectedItemOffset();
FloatTween top = new FloatTween(
begin: selectedItemOffset.clamp(0.0f, size.height - material_._kMenuItemHeight),
end: 0.0f
);
FloatTween bottom = new FloatTween(
begin: (top.begin + material_._kMenuItemHeight).clamp(material_._kMenuItemHeight,
size.height),
end: size.height
);
Rect rect = Rect.fromLTRB(0.0f, top.evaluate(resize), size.width, bottom.evaluate(resize));
_painter.paint(canvas, rect.topLeft, new ImageConfiguration(size: rect.size));
}
public override void paint(Canvas canvas, Size size)
{
float selectedItemOffset = this.selectedIndex ?? 0 * DropdownConstants._kMenuItemHeight +
Constants.kMaterialListPadding.top;
FloatTween top = new FloatTween(
begin: selectedItemOffset.clamp(0.0f, size.height - DropdownConstants._kMenuItemHeight),
end: 0.0f
);
FloatTween bottom = new FloatTween(
begin: (top.begin + DropdownConstants._kMenuItemHeight).clamp(DropdownConstants._kMenuItemHeight,
size.height),
end: size.height
);
Rect rect = Rect.fromLTRB(0.0f, top.evaluate(this.resize), size.width, bottom.evaluate(this.resize));
this._painter.paint(canvas, rect.topLeft, new ImageConfiguration(size: rect.size));
}
public Rect toRect() {
return Rect.fromLTRB(this.left, this.top, this.right, this.bottom);
}
public static Rect transformRect(Matrix4 transform, Rect rect)
{
float[] storage = transform.storage;
float x = rect.left;
float y = rect.top;
float w = rect.right - x;
float h = rect.bottom - y;
if (!w.isFinite() || !h.isFinite())
{
return(_safeTransformRect(transform, rect));
}
float wx = storage[0] * w;
float hx = storage[4] * h;
float rx = storage[0] * x + storage[4] * y + storage[12];
float wy = storage[1] * w;
float hy = storage[5] * h;
float ry = storage[1] * x + storage[5] * y + storage[13];
if (storage[3] == 0.0f && storage[7] == 0.0f && storage[15] == 1.0f)
{
float left = rx;
float right = rx;
if (wx < 0)
{
left += wx;
}
else
{
right += wx;
}
if (hx < 0)
{
left += hx;
}
else
{
right += hx;
}
float top = ry;
float bottom = ry;
if (wy < 0)
{
top += wy;
}
else
{
bottom += wy;
}
if (hy < 0)
{
top += hy;
}
else
{
bottom += hy;
}
return(Rect.fromLTRB(left, top, right, bottom));
}
else
{
float ww = storage[3] * w;
float hw = storage[7] * h;
float rw = storage[3] * x + storage[7] * y + storage[15];
float ulx = rx / rw;
float uly = ry / rw;
float urx = (rx + wx) / (rw + ww);
float ury = (ry + wy) / (rw + ww);
float llx = (rx + hx) / (rw + hw);
float lly = (ry + hy) / (rw + hw);
float lrx = (rx + wx + hx) / (rw + ww + hw);
float lry = (ry + wy + hy) / (rw + ww + hw);
return(Rect.fromLTRB(
_min4(ulx, urx, llx, lrx),
_min4(uly, ury, lly, lry),
_max4(ulx, urx, llx, lrx),
_max4(uly, ury, lly, lry)
));
}
}
void _drawValueIndicator(
RenderBox parentBox,
Canvas canvas,
Offset center,
Paint paint,
float scale,
TextPainter labelPainter
)
{
canvas.save();
canvas.translate(center.dx, center.dy);
float textScaleFactor = labelPainter.height / _labelTextDesignSize;
float overallScale = scale * textScaleFactor;
canvas.scale(overallScale, overallScale);
float inverseTextScale = textScaleFactor != 0 ? 1.0f / textScaleFactor : 0.0f;
float labelHalfWidth = labelPainter.width / 2.0f;
float halfWidthNeeded = Mathf.Max(
0.0f,
inverseTextScale * labelHalfWidth - (_topLobeRadius - _labelPadding)
);
float shift = this._getIdealOffset(parentBox, halfWidthNeeded, overallScale, center);
float leftWidthNeeded;
float rightWidthNeeded;
if (shift < 0.0)
{
shift = Mathf.Max(shift, -halfWidthNeeded);
}
else
{
shift = Mathf.Min(shift, halfWidthNeeded);
}
rightWidthNeeded = halfWidthNeeded + shift;
leftWidthNeeded = halfWidthNeeded - shift;
Path path = new Path();
Offset bottomLobeEnd = this._addBottomLobe(path);
float neckTriangleBase = _topNeckRadius - bottomLobeEnd.dx;
float leftAmount = Mathf.Max(0.0f, Mathf.Min(1.0f, leftWidthNeeded / neckTriangleBase));
float rightAmount = Mathf.Max(0.0f, Mathf.Min(1.0f, rightWidthNeeded / neckTriangleBase));
float leftTheta = (1.0f - leftAmount) * _thirtyDegrees;
float rightTheta = (1.0f - rightAmount) * _thirtyDegrees;
Offset neckLeftCenter = new Offset(
-neckTriangleBase,
_topLobeCenter.dy + Mathf.Cos(leftTheta) * _neckTriangleHypotenuse
);
Offset neckRightCenter = new Offset(
neckTriangleBase,
_topLobeCenter.dy + Mathf.Cos(rightTheta) * _neckTriangleHypotenuse
);
float leftNeckArcAngle = _ninetyDegrees - leftTheta;
float rightNeckArcAngle = Mathf.PI + _ninetyDegrees - rightTheta;
float neckStretchBaseline = bottomLobeEnd.dy - Mathf.Max(neckLeftCenter.dy, neckRightCenter.dy);
float t = Mathf.Pow(inverseTextScale, 3.0f);
float stretch = (neckStretchBaseline * t).clamp(0.0f, 10.0f * neckStretchBaseline);
Offset neckStretch = new Offset(0.0f, neckStretchBaseline - stretch);
D.assert(() => {
if (!_debuggingLabelLocation)
{
return(true);
}
#pragma warning disable 0162
Offset leftCenter = _topLobeCenter - new Offset(leftWidthNeeded, 0.0f) + neckStretch;
Offset rightCenter = _topLobeCenter + new Offset(rightWidthNeeded, 0.0f) + neckStretch;
Rect valueRect = Rect.fromLTRB(
leftCenter.dx - _topLobeRadius,
leftCenter.dy - _topLobeRadius,
rightCenter.dx + _topLobeRadius,
rightCenter.dy + _topLobeRadius
);
Paint outlinePaint = new Paint();
outlinePaint.color = new Color(0xffff0000);
outlinePaint.style = PaintingStyle.stroke;
outlinePaint.strokeWidth = 1.0f;
canvas.drawRect(valueRect, outlinePaint);
return(true);
#pragma warning restore 0162
});
_addArc(
path,
neckLeftCenter + neckStretch,
_topNeckRadius,
0.0f,
-leftNeckArcAngle
);
_addArc(
path,
_topLobeCenter - new Offset(leftWidthNeeded, 0.0f) + neckStretch,
_topLobeRadius,
_ninetyDegrees + leftTheta,
_twoSeventyDegrees
);
_addArc(
path,
_topLobeCenter + new Offset(rightWidthNeeded, 0.0f) + neckStretch,
_topLobeRadius,
_twoSeventyDegrees,
_twoSeventyDegrees + Mathf.PI - rightTheta
);
_addArc(
path,
neckRightCenter + neckStretch,
_topNeckRadius,
rightNeckArcAngle,
Mathf.PI
);
canvas.drawPath(path, paint);
canvas.save();
canvas.translate(shift, -_distanceBetweenTopBottomCenters + neckStretch.dy);
canvas.scale(inverseTextScale, inverseTextScale);
labelPainter.paint(canvas, Offset.zero - new Offset(labelHalfWidth, labelPainter.height / 2.0f));
canvas.restore();
canvas.restore();
}
bool _applyClip(Rect queryBounds)
{
var layer = this._currentLayer;
var layerBounds = layer.layerBounds;
ReducedClip reducedClip = new ReducedClip(layer.clipStack, layerBounds, queryBounds);
if (reducedClip.isEmpty())
{
return(false);
}
var scissor = reducedClip.scissor;
var physicalRect = Rect.fromLTRB(0, 0, layer.width, layer.height);
if (scissor == layerBounds)
{
this._tryAddScissor(layer, null);
}
else
{
var deviceScissor = Rect.fromLTRB(
scissor.left - layerBounds.left, layerBounds.bottom - scissor.bottom,
scissor.right - layerBounds.left, layerBounds.bottom - scissor.top
).scale(layer.width / layerBounds.width, layer.height / layerBounds.height);
deviceScissor = deviceScissor.roundOut();
deviceScissor = deviceScissor.intersect(physicalRect);
if (deviceScissor.isEmpty)
{
return(false);
}
this._tryAddScissor(layer, deviceScissor);
}
var maskGenID = reducedClip.maskGenID();
if (this._mustRenderClip(maskGenID, reducedClip.scissor))
{
if (maskGenID == ClipStack.wideOpenGenID)
{
layer.ignoreClip = true;
}
else
{
layer.ignoreClip = false;
var boundsMesh = new MeshMesh(reducedClip.scissor);
layer.draws.Add(CanvasShader.stencilClear(layer, boundsMesh));
foreach (var maskElement in reducedClip.maskElements)
{
layer.draws.Add(CanvasShader.stencil0(layer, maskElement.mesh));
layer.draws.Add(CanvasShader.stencil1(layer, boundsMesh));
}
}
this._setLastClipGenId(maskGenID, reducedClip.scissor);
}
return(true);
}
public override void paint(PaintingContext context, Offset offset)
{
Canvas canvas = context.canvas;
float currentValue = this._position.value;
float currentReactionValue = this._reaction.value;
float visualPosition = 0f;
switch (this.textDirection)
{
case TextDirection.rtl:
visualPosition = 1.0f - currentValue;
break;
case TextDirection.ltr:
visualPosition = currentValue;
break;
}
Color trackColor = this._value ? this.activeColor : CupertinoSwitchUtils._kTrackColor;
float borderThickness =
1.5f + (CupertinoSwitchUtils._kTrackRadius - 1.5f) * Mathf.Max(currentReactionValue, currentValue);
Paint paint = new Paint();
paint.color = trackColor;
Rect trackRect = Rect.fromLTWH(
offset.dx + (this.size.width - CupertinoSwitchUtils._kTrackWidth) / 2.0f,
offset.dy + (this.size.height - CupertinoSwitchUtils._kTrackHeight) / 2.0f,
CupertinoSwitchUtils._kTrackWidth,
CupertinoSwitchUtils._kTrackHeight
);
RRect outerRRect = RRect.fromRectAndRadius(trackRect, Radius.circular(CupertinoSwitchUtils
._kTrackRadius));
RRect innerRRect = RRect.fromRectAndRadius(trackRect.deflate(borderThickness), Radius.circular
(CupertinoSwitchUtils._kTrackRadius));
canvas.drawDRRect(outerRRect, innerRRect, paint);
float currentThumbExtension = CupertinoThumbPainter.extension * currentReactionValue;
float thumbLeft = MathUtils.lerpFloat(
trackRect.left + CupertinoSwitchUtils._kTrackInnerStart - CupertinoThumbPainter.radius,
trackRect.left + CupertinoSwitchUtils._kTrackInnerEnd - CupertinoThumbPainter.radius -
currentThumbExtension,
visualPosition
);
float thumbRight = MathUtils.lerpFloat(
trackRect.left + CupertinoSwitchUtils._kTrackInnerStart + CupertinoThumbPainter.radius +
currentThumbExtension,
trackRect.left + CupertinoSwitchUtils._kTrackInnerEnd + CupertinoThumbPainter.radius,
visualPosition
);
float thumbCenterY = offset.dy + this.size.height / 2.0f;
this._thumbPainter.paint(canvas, Rect.fromLTRB(
thumbLeft,
thumbCenterY - CupertinoThumbPainter.radius,
thumbRight,
thumbCenterY + CupertinoThumbPainter.radius
));
}
public override void paint(PaintingContext context, Offset offset)
{
Canvas canvas = context.canvas;
float trackLength = this.size.width - 2 * _overlayRadius;
float value = this._state.positionController.value;
ColorTween activeTrackEnableColor = new ColorTween(begin: this._sliderTheme.disabledActiveTrackColor,
end: this._sliderTheme.activeTrackColor);
ColorTween inactiveTrackEnableColor = new ColorTween(begin: this._sliderTheme.disabledInactiveTrackColor,
end: this._sliderTheme.inactiveTrackColor);
ColorTween activeTickMarkEnableColor = new ColorTween(begin: this._sliderTheme.disabledActiveTickMarkColor,
end: this._sliderTheme.activeTickMarkColor);
ColorTween inactiveTickMarkEnableColor =
new ColorTween(begin: this._sliderTheme.disabledInactiveTickMarkColor,
end: this._sliderTheme.inactiveTickMarkColor);
Paint activeTrackPaint = new Paint {
color = activeTrackEnableColor.evaluate(this._enableAnimation)
};
Paint inactiveTrackPaint = new Paint {
color = inactiveTrackEnableColor.evaluate(this._enableAnimation)
};
Paint activeTickMarkPaint = new Paint {
color = activeTickMarkEnableColor.evaluate(this._enableAnimation)
};
Paint inactiveTickMarkPaint = new Paint
{
color = inactiveTickMarkEnableColor.evaluate(this._enableAnimation)
};
float visualPosition = value;
Paint leftTrackPaint = activeTrackPaint;
Paint rightTrackPaint = inactiveTrackPaint;
Paint leftTickMarkPaint = activeTickMarkPaint;
Paint rightTickMarkPaint = inactiveTickMarkPaint;
float trackRadius = _trackHeight / 2.0f;
float thumbGap = 2.0f;
float trackVerticalCenter = offset.dy + (this.size.height) / 2.0f;
float trackLeft = offset.dx + _overlayRadius;
float trackTop = trackVerticalCenter - trackRadius;
float trackBottom = trackVerticalCenter + trackRadius;
float trackRight = trackLeft + trackLength;
float trackActive = trackLeft + trackLength * visualPosition;
float thumbRadius =
this._sliderTheme.thumbShape.getPreferredSize(this.isInteractive, this.isDiscrete).width / 2.0f;
float trackActiveLeft = Mathf.Max(0.0f,
trackActive - thumbRadius - thumbGap * (1.0f - this._enableAnimation.value));
float trackActiveRight =
Mathf.Min(trackActive + thumbRadius + thumbGap * (1.0f - this._enableAnimation.value), trackRight);
Rect trackLeftRect = Rect.fromLTRB(trackLeft, trackTop, trackActiveLeft, trackBottom);
Rect trackRightRect = Rect.fromLTRB(trackActiveRight, trackTop, trackRight, trackBottom);
Offset thumbCenter = new Offset(trackActive, trackVerticalCenter);
if (visualPosition > 0.0)
{
canvas.drawRect(trackLeftRect, leftTrackPaint);
}
if (visualPosition < 1.0)
{
canvas.drawRect(trackRightRect, rightTrackPaint);
}
this._paintOverlay(canvas, thumbCenter);
this._paintTickMarks(
canvas,
trackLeftRect,
trackRightRect,
leftTickMarkPaint,
rightTickMarkPaint
);
if (this.isInteractive && this.label != null &&
this._valueIndicatorAnimation.status != AnimationStatus.dismissed)
{
if (this.showValueIndicator)
{
this._sliderTheme.valueIndicatorShape.paint(
context,
thumbCenter,
activationAnimation: this._valueIndicatorAnimation,
enableAnimation: this._enableAnimation,
isDiscrete: this.isDiscrete,
labelPainter: this._labelPainter,
parentBox: this,
sliderTheme: this._sliderTheme,
value: this._value
);
}
}
this._sliderTheme.thumbShape.paint(
context,
thumbCenter,
activationAnimation: this._valueIndicatorAnimation,
enableAnimation: this._enableAnimation,
isDiscrete: this.isDiscrete,
labelPainter: this._labelPainter,
parentBox: this,
sliderTheme: this._sliderTheme,
value: this._value
);
}
public override void paint(PaintingContext context, Offset offset)
{
base.paint(context, offset);
Offset bottomRight = size.bottomRight(offset);
Rect outer = Rect.fromLTRB(offset.dx, offset.dy, bottomRight.dx, bottomRight.dy);
Rect center = outer.deflate(horizontalBorderSide.width / 2.0f);
const float sweepAngle = Mathf.PI / 2.0f;
RRect rrect = RRect.fromRectAndCorners(
center,
topLeft: borderRadius.topLeft,
topRight: borderRadius.topRight,
bottomLeft: borderRadius.bottomLeft,
bottomRight: borderRadius.bottomRight
).scaleRadii();
Rect tlCorner = Rect.fromLTWH(
rrect.left,
rrect.top,
rrect.tlRadiusX * 2.0f,
rrect.tlRadiusY * 2.0f
);
Rect blCorner = Rect.fromLTWH(
rrect.left,
rrect.bottom - (rrect.blRadiusY * 2.0f),
rrect.blRadiusX * 2.0f,
rrect.blRadiusY * 2.0f
);
Rect trCorner = Rect.fromLTWH(
rrect.right - (rrect.trRadiusX * 2.0f),
rrect.top,
rrect.trRadiusX * 2.0f,
rrect.trRadiusY * 2.0f
);
Rect brCorner = Rect.fromLTWH(
rrect.right - (rrect.brRadiusX * 2.0f),
rrect.bottom - (rrect.brRadiusY * 2.0f),
rrect.brRadiusX * 2.0f,
rrect.brRadiusY * 2.0f
);
Paint leadingPaint = leadingBorderSide.toPaint();
switch (textDirection)
{
case TextDirection.ltr: {
if (isLastButton)
{
Path leftPath = new Path();
leftPath.moveTo(rrect.left, rrect.bottom + leadingBorderSide.width / 2);
leftPath.lineTo(rrect.left, rrect.top - leadingBorderSide.width / 2);
context.canvas.drawPath(leftPath, leadingPaint);
Paint endingPaint = trailingBorderSide.toPaint();
Path endingPath = new Path();
endingPath.moveTo(rrect.left + horizontalBorderSide.width / 2.0f, rrect.top);
endingPath.lineTo(rrect.right - rrect.trRadiusX, rrect.top);
endingPath.addArc(trCorner, Mathf.PI * 3.0f / 2.0f, sweepAngle);
endingPath.lineTo(rrect.right, rrect.bottom - rrect.brRadiusY);
endingPath.addArc(brCorner, 0, sweepAngle);
endingPath.lineTo(rrect.left + horizontalBorderSide.width / 2.0f, rrect.bottom);
context.canvas.drawPath(endingPath, endingPaint);
}
else if (isFirstButton)
{
Path leadingPath = new Path();
leadingPath.moveTo(outer.right, rrect.bottom);
leadingPath.lineTo(rrect.left + rrect.blRadiusX, rrect.bottom);
leadingPath.addArc(blCorner, Mathf.PI / 2.0f, sweepAngle);
leadingPath.lineTo(rrect.left, rrect.top + rrect.tlRadiusY);
leadingPath.addArc(tlCorner, Mathf.PI, sweepAngle);
leadingPath.lineTo(outer.right, rrect.top);
context.canvas.drawPath(leadingPath, leadingPaint);
}
else
{
Path leadingPath = new Path();
leadingPath.moveTo(rrect.left, rrect.bottom + leadingBorderSide.width / 2);
leadingPath.lineTo(rrect.left, rrect.top - leadingBorderSide.width / 2);
context.canvas.drawPath(leadingPath, leadingPaint);
Paint horizontalPaint = horizontalBorderSide.toPaint();
Path horizontalPaths = new Path();
horizontalPaths.moveTo(rrect.left + horizontalBorderSide.width / 2.0f, rrect.top);
horizontalPaths.lineTo(outer.right - rrect.trRadiusX, rrect.top);
horizontalPaths.moveTo(rrect.left + horizontalBorderSide.width / 2.0f + rrect.tlRadiusX,
rrect.bottom);
horizontalPaths.lineTo(outer.right - rrect.trRadiusX, rrect.bottom);
context.canvas.drawPath(horizontalPaths, horizontalPaint);
}
break;
}
case TextDirection.rtl: {
if (isLastButton)
{
Path leadingPath = new Path();
leadingPath.moveTo(rrect.right, rrect.bottom + leadingBorderSide.width / 2);
leadingPath.lineTo(rrect.right, rrect.top - leadingBorderSide.width / 2);
context.canvas.drawPath(leadingPath, leadingPaint);
Paint endingPaint = trailingBorderSide.toPaint();
Path endingPath = new Path();
endingPath.moveTo(rrect.right - horizontalBorderSide.width / 2.0f, rrect.top);
endingPath.lineTo(rrect.left + rrect.tlRadiusX, rrect.top);
endingPath.addArc(tlCorner, Mathf.PI * 3.0f / 2.0f, -sweepAngle);
endingPath.lineTo(rrect.left, rrect.bottom - rrect.blRadiusY);
endingPath.addArc(blCorner, Mathf.PI, -sweepAngle);
endingPath.lineTo(rrect.right - horizontalBorderSide.width / 2.0f, rrect.bottom);
context.canvas.drawPath(endingPath, endingPaint);
}
else if (isFirstButton)
{
Path leadingPath = new Path();
leadingPath.moveTo(outer.left, rrect.bottom);
leadingPath.lineTo(rrect.right - rrect.brRadiusX, rrect.bottom);
leadingPath.addArc(brCorner, Mathf.PI / 2.0f, -sweepAngle);
leadingPath.lineTo(rrect.right, rrect.top + rrect.trRadiusY);
leadingPath.addArc(trCorner, 0, -sweepAngle);
leadingPath.lineTo(outer.left, rrect.top);
context.canvas.drawPath(leadingPath, leadingPaint);
}
else
{
Path leadingPath = new Path();
leadingPath.moveTo(rrect.right, rrect.bottom + leadingBorderSide.width / 2);
leadingPath.lineTo(rrect.right, rrect.top - leadingBorderSide.width / 2);
context.canvas.drawPath(leadingPath, leadingPaint);
Paint horizontalPaint = horizontalBorderSide.toPaint();
Path horizontalPaths = new Path();
horizontalPaths.moveTo(rrect.right - horizontalBorderSide.width / 2.0f, rrect.top);
horizontalPaths.lineTo(outer.left - rrect.tlRadiusX, rrect.top);
horizontalPaths.moveTo(rrect.right - horizontalBorderSide.width / 2.0f + rrect.trRadiusX,
rrect.bottom);
horizontalPaths.lineTo(outer.left - rrect.tlRadiusX, rrect.bottom);
context.canvas.drawPath(horizontalPaths, horizontalPaint);
}
break;
}
}
}
public Rect inflateRect(Rect rect)
{
return(Rect.fromLTRB(
rect.left - left, rect.top - top,
rect.right + right, rect.bottom + bottom));
}
public Rect deflateRect(Rect rect)
{
return(Rect.fromLTRB(
rect.left + left, rect.top + top,
rect.right - right, rect.bottom - bottom));
}
