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fix: safeguards against invalid values

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This commit is contained in:
Igor Randjelovic
2021-02-26 18:49:50 +01:00
committed by Nathan Walker
parent 1dfa5a6025
commit f5db58414a
6 changed files with 154 additions and 54 deletions
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24
packages/core/ui/styling/background.ios.ts
View File

@@ -134,6 +134,7 @@ function unsubscribeFromScrollNotifications(view: View) {
view.off('scroll', onScroll);
}
}
function subscribeForScrollNotifications(view: View) {
if (view.nativeViewProtected instanceof UIScrollView) {
view.on('scroll', onScroll);
@@ -170,6 +171,7 @@ function clearNonUniformBorders(nativeView: NativeView): void {
}
const pattern = /url\(('|")(.*?)\1\)/;
function setUIColorFromImage(view: View, nativeView: UIView, callback: (uiColor: UIColor) => void, flip?: boolean): void {
const frame = nativeView.frame;
const boundsWidth = view.scaleX ? frame.size.width / view.scaleX : frame.size.width;
@@ -733,15 +735,24 @@ function drawBoxShadow(nativeView: NativeView, view: View, boxShadow: CSSShadow,
}
// shadow opacity is handled on the shadow's color instance
layer.shadowOpacity = boxShadow.color?.a ? boxShadow.color?.a / 255 : 1;
layer.shadowRadius = Length.toDevicePixels(boxShadow.blurRadius);
layer.shadowRadius = Length.toDevicePixels(boxShadow.blurRadius, 0.0);
layer.shadowColor = boxShadow.color.ios.CGColor;
layer.shadowOffset = CGSizeMake(Length.toDevicePixels(boxShadow.offsetX), Length.toDevicePixels(boxShadow.offsetY));
// prettier-ignore
layer.shadowOffset = CGSizeMake(
Length.toDevicePixels(boxShadow.offsetX, 0.0),
Length.toDevicePixels(boxShadow.offsetY, 0.0)
);
// this should match the view's border radius
const cornerRadius = Length.toDevicePixels(<LengthType>view.style.borderRadius);
const cornerRadius = Length.toDevicePixels(<LengthType>view.style.borderRadius, 0.0);
// apply spreadRadius by expanding shadow layer bounds
const bounds = boxShadow.spreadRadius ? CGRectInset(nativeView.bounds, -Length.toDevicePixels(boxShadow.spreadRadius), -Length.toDevicePixels(boxShadow.spreadRadius)) : nativeView.bounds;
// prettier-ignore
const bounds = CGRectInset(nativeView.bounds,
-Length.toDevicePixels(boxShadow.spreadRadius, 0.0),
-Length.toDevicePixels(boxShadow.spreadRadius, 0.0)
);
// This has the nice glow with box shadow of 0,0
layer.shadowPath = UIBezierPath.bezierPathWithRoundedRectCornerRadius(bounds, cornerRadius).CGPath;
@@ -749,7 +760,10 @@ function drawBoxShadow(nativeView: NativeView, view: View, boxShadow: CSSShadow,
function clearBoxShadow(nativeView: NativeView) {
nativeView.clipsToBounds = true;
const layer: CALayer = iOSNativeHelper.getShadowLayer(nativeView, 'ns-box-shadow');
const layer: CALayer = iOSNativeHelper.getShadowLayer(nativeView, 'ns-box-shadow', false);
if (!layer) {
return;
}
layer.masksToBounds = true;
layer.shadowOffset = CGSizeMake(0, 0);
layer.shadowColor = UIColor.clearColor.CGColor;

2
packages/core/ui/styling/css-shadow.ts
View File

@@ -34,7 +34,7 @@ const isLength = (v) => v === '0' || LENGTH_RE.test(v);
* @param value
*/
export function parseCSSShadow(value: string): CSSShadow {
const parts = value.split(PARTS_RE);
const parts = value.trim().split(PARTS_RE);
const inset = parts.includes('inset');
const first = parts[0];
const last = parts[parts.length - 1];

3
packages/core/utils/native-helper.d.ts vendored
View File

@@ -171,8 +171,9 @@ export namespace iOSNativeHelper {
/**
* @param nativeView UIView to find shadow layer with
* @param name Name of the shadow layer if looking for specifically named layer
* @param create should we create a new layer if not found
*/
export function getShadowLayer(nativeView: any /* UIView */, name?: string): any; /* CALayer */
export function getShadowLayer(nativeView: any /* UIView */, name?: string, create?: boolean): any; /* CALayer */
/**
* Create a UIDocumentInteractionControllerDelegate implementation for use with UIDocumentInteractionController

110
packages/core/utils/native-helper.ios.ts
View File

@@ -120,44 +120,86 @@ export namespace iOSNativeHelper {
return transform;
}
export function getShadowLayer(nativeView: UIView, name?: string): CALayer {
let layer: CALayer;
name = name || 'ns-shadow-layer';
if (nativeView) {
if (nativeView.layer) {
if (nativeView.layer.name === name) {
console.log('- found shadow layer - reusing.');
return nativeView.layer;
} else {
if (nativeView.layer.sublayers && nativeView.layer.sublayers.count) {
console.log('nativeView.layer.sublayers.count:', nativeView.layer.sublayers.count);
for (let i = 0; i < nativeView.layer.sublayers.count; i++) {
console.log(`layer ${i}:`, nativeView.layer.sublayers.objectAtIndex(i));
console.log(`layer ${i} name:`, nativeView.layer.sublayers.objectAtIndex(i).name);
if (nativeView.layer.sublayers.objectAtIndex(i).name === name) {
return nativeView.layer.sublayers.objectAtIndex(i);
}
}
if (nativeView instanceof UITextView) {
layer = nativeView.layer.sublayers.objectAtIndex(1);
} else {
layer = nativeView.layer.sublayers.objectAtIndex(nativeView.layer.sublayers.count - 1);
}
} else {
layer = nativeView.layer;
}
export function getShadowLayer(nativeView: UIView, name: string = 'ns-shadow-layer', create: boolean = true): CALayer {
return nativeView.layer;
console.log(`--- ${create ? 'CREATE' : 'READ'}`);
/**
* UIView
* -> Shadow
*
*
* UIView
* -> UIView
* -> Shadow
*/
if (!nativeView) {
return null;
}
if (!nativeView.layer) {
// should never hit this?
console.log('- no layer! -');
return null;
}
// if the nativeView's layer is the shadow layer?
if (nativeView.layer.name === name) {
console.log('- found shadow layer - reusing.');
return nativeView.layer;
}
console.log('>> layer :', nativeView.layer);
if (nativeView.layer.sublayers?.count) {
const count = nativeView.layer.sublayers.count;
for (let i = 0; i < count; i++) {
const subLayer = nativeView.layer.sublayers.objectAtIndex(i);
console.log(`>> subLayer ${i + 1}/${count} :`, subLayer);
console.log(`>> subLayer ${i + 1}/${count} name :`, subLayer.name);
if (subLayer.name === name) {
console.log('- found shadow sublayer - reusing.');
return subLayer;
}
} else {
// could this occur?
console.log('no layer!');
}
// if (nativeView instanceof UITextView) {
// return nativeView.layer.sublayers.objectAtIndex(1);
// } else {
// return nativeView.layer.sublayers.objectAtIndex(nativeView.layer.sublayers.count - 1);
// }
}
console.log('layer.name:', layer.name);
if (!layer.name) {
// only explicitly name if the developer had not named it themselves and/or some other integration
layer.name = name;
// else {
// layer = nativeView.layer;
// }
// we're not interested in creating a new layer
if (!create) {
return null;
}
return layer;
console.log(`- adding a new layer for - ${name}`);
const viewLayer = nativeView.layer;
const newLayer = CALayer.layer();
newLayer.name = name;
newLayer.zPosition = 0.0;
// nativeView.layer.insertSublayerBelow(newLayer, nativeView.layer)
// newLayer.insertSublayerAtIndex(nativeView.layer, 0)
// nativeView.layer.zPosition = 1.0;
// nativeView.layer.addSublayer(newLayer);
// nativeView.layer = CALayer.layer()
nativeView.layer.insertSublayerAtIndex(newLayer, 0);
// nativeView.layer.insertSublayerAtIndex(viewLayer, 1)
// nativeView.layer.replaceSublayerWith(newLayer, nativeView.layer);
return newLayer;
}
export function createUIDocumentInteractionControllerDelegate(): NSObject {