René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"Adding image to annotation labels!","articleBody":"Hi SciChart team,\r\n\r\nI would like to add and image to annotation without any text. Here is my code to create annotation:\r\n\r\n`        triggerHorizontalLine.set(y1: 0.0)\r\n\r\n        triggerHorizontalLine.set(x1: 0.0)\r\n\r\n        triggerHorizontalLine.isEditable = true\r\n\r\n        triggerHorizontalLine.xAxisId = axisId\r\n\r\n        triggerHorizontalLine.horizontalAlignment = .fillHorizontal\r\n\r\n        triggerHorizontalLine.stroke =  SCISolidPenStyle(colorCode: SciChartColours.horizontalLineStyle, thickness: 2.5, strokeDashArray: [2.0, 4.0, 2.0, 4.0], antiAliasing: false)\r\n\r\n        let lineAnnotationLabel = SCIAnnotationLabel()\r\n\r\n        lineAnnotationLabel.labelPlacement = .topLeft\r\n\r\n        triggerHorizontalLine.annotationSurface = .aboveChart\r\n\r\n        triggerHorizontalLine.annotationLabels.add(lineAnnotationLabel)`\r\n\r\n\r\nAnd also I added an extension:\r\n\r\n`import SciChart\r\n\r\nextension SCIAnnotationLabel {\r\n    \r\n    func addImage(imageName: String) {\r\n        let iconsSize = CGRect(x: 0, y: 0, width: 130, height: 130)\r\n        let imageAttachement:NSTextAttachment = NSTextAttachment()\r\n        imageAttachement.image = UIImage(named: imageName)\r\n        imageAttachement.bounds = iconsSize\r\n        self.attributedText = NSAttributedString(attachment: imageAttachement)\r\n    }\r\n}`\r\n\r\nAnd then later I add an image \r\n\r\n`self.triggerLineList[self.selectedTabIndex].annotationLabels.firstObject.addImage(imageName: ImageNames.btnDutyImage)`\r\n\r\nApp is crashing in the library and here is the debug output:\r\n\r\n```\r\n2020-08-12 10:33:12.258598+1000 PokitMeter - Dev[339:20686] [Unknown process name] CGContextSetTextMatrix: invalid context 0x0. If you want to see the backtrace, please set CG_CONTEXT_SHOW_BACKTRACE environmental variable.\r\n2020-08-12 10:33:12.258833+1000 PokitMeter - Dev[339:20686] [Unknown process name] CGContextTranslateCTM: invalid context 0x0. If you want to see the backtrace, please set CG_CONTEXT_SHOW_BACKTRACE environmental variable.\r\n2020-08-12 10:33:12.258948+1000 PokitMeter - Dev[339:20686] [Unknown process name] CGContextRotateCTM: invalid context 0x0. If you want to see the backtrace, please set CG_CONTEXT_SHOW_BACKTRACE environmental variable.\r\n2020-08-12 10:33:12.259041+1000 PokitMeter - Dev[339:20686] [Unknown process name] CGContextTranslateCTM: invalid context 0x0. If you want to see the backtrace, please set CG_CONTEXT_SHOW_BACKTRACE environmental variable.\r\n2020-08-12 10:33:12.259352+1000 PokitMeter - Dev[339:20686] validateTextureDimensions, line 1226: error 'MTLTextureDescriptor has width of zero.'\r\nvalidateTextureDimensions:1226: failed assertion `MTLTextureDescriptor has width of zero.'\r\n\r\n```\r\n\r\n\r\nIf I add text to the attributed string crash issue is getting fixed but it does not show my image:\r\n```\r\n\r\nextension SCIAnnotationLabel {\r\n    \r\n    func addImage(imageName: String) {\r\n        let iconsSize = CGRect(x: 0, y: 0, width: 130, height: 130)\r\n        let imageAttachement:NSTextAttachment = NSTextAttachment()\r\n\r\n        imageAttachement.image = UIImage(named: imageName)\r\n        imageAttachement.bounds = iconsSize\r\n        \r\n        let myString:NSMutableAttributedString = NSMutableAttributedString(string: \"RISING TRIGGER\")\r\n        myString.append(NSAttributedString(attachment: imageAttachement))\r\n        \r\n        \r\n        self.attributedText = myString\r\n    }\r\n}\r\n```\r\n\r\nIt would be great if you could show me how to add image to annotation labels.\r\n\r\nThanks","author":{"url":"https://github.com/bernard-ingenuity","@type":"Person","name":"bernard-ingenuity"},"datePublished":"2020-08-12T00:38:29.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":1},"url":"https://github.com/10/SciChart.iOS.Examples/issues/10"}