@clr/angular
Version:
Angular components for Clarity
179 lines • 20.8 kB
JavaScript
/*
* Copyright (c) 2016-2023 VMware, Inc. All Rights Reserved.
* This software is released under MIT license.
* The full license information can be found in LICENSE in the root directory of this project.
*/
import { ClrAlignment } from './enums/alignment.enum';
import { ClrViewportViolation } from './enums/viewport-violation.enum';
export const flipSides = position => {
return {
...position,
side: -1 * position.side,
};
};
// This could be used in more advanced positioning algorithms.
// flipAxisFlipSideAndNudgeContent(flipAxis, flipSide, nudge, nudgeForward?): ClrTransform {...}
// I would like to keep it for now.
export const flipAxis = position => {
return {
...position,
axis: position.axis === 0 ? 1 : 0,
};
};
export const nudgeContent = (position, forward) => {
const nextAlignment = position.content + (forward ? 0.5 : -0.5);
if (nextAlignment < 0 || nextAlignment > 1) {
return position;
}
else {
return {
...position,
content: nextAlignment,
};
}
};
export function flipSidesAndNudgeContent(flip, nudge, nudgeBack) {
return (position) => nudge(flip(position), nudgeBack);
}
export function align(position, anchor, content) {
let xDiff = anchor.left;
let yDiff = anchor.top;
// When ClrAxis is VERTICAL BEFORE = left, AFTER = right
// When ClrAxis is HORIZONTAL BEFORE is top, AFTER is bottom
switch (position.axis + position.side) {
case -1: {
// ClrAxis.VERTICAL + ClrSide.BEFORE
xDiff += alignHorizontal(position, anchor, content);
yDiff -= content.height; // pull content up to the top of the anchor
break;
}
case 1: {
// ClrAxis.VERTICAL + ClrSide.AFTER
xDiff += alignHorizontal(position, anchor, content);
yDiff += anchor.height; // push the content down to below the anchor
break;
}
case 0: {
// ClrAxis.HORIZONTAL + ClrSide.BEFORE
xDiff -= content.width; // pull the content left of the anchor
yDiff += alignVertical(position, anchor, content);
break;
}
case 2: {
// ClrAxis.HORIZONTAL + ClrSide.AFTER
xDiff += anchor.width; // push the content right of of the anchor
yDiff += alignVertical(position, anchor, content);
break;
}
default: {
break;
}
}
return { xOffset: xDiff, yOffset: yDiff };
}
function alignHorizontal(position, anchor, content) {
let horizontalOffset = 0;
// horizontal offset for the anchor position
switch (position.anchor /*calculate for the anchor alignment*/) {
case ClrAlignment.START: {
// nothing to calculate here
break;
}
case ClrAlignment.CENTER: {
horizontalOffset += anchor.width / 2; // push content over 1/2 anchor width
break;
}
case ClrAlignment.END: {
horizontalOffset += anchor.width; // push content over width of the anchor
break;
}
default: {
break;
}
}
// horizontal offsets for anchor alignment
switch (position.content // calculate for the content alignment
) {
case ClrAlignment.START: {
// Nothing to calculate here
break;
}
case ClrAlignment.CENTER: {
horizontalOffset -= content.width / 2; // pull content left by a value of 1/2 content width
break;
}
case ClrAlignment.END: {
// subtract the width of currentContent from horizontalOffset to pull it back
horizontalOffset -= content.width;
break;
}
default: {
break;
}
}
return horizontalOffset;
}
function alignVertical(position, anchor, content) {
// y axis offsets for anchor alignment
let verticalOffset = 0;
// Calculate y offset for anchor position
switch (position.anchor) {
case ClrAlignment.START: {
// nothing to calculate here
break;
}
case ClrAlignment.CENTER: {
verticalOffset += anchor.height / 2; // push content down to the middle of the anchor rect
break;
}
case ClrAlignment.END: {
verticalOffset += anchor.height; // push content down to the bottom of the anchor
break;
}
default: {
break;
}
}
// Calculate y offsets for content alignment
switch (position.content) {
case ClrAlignment.START: {
// aligned to the top of the content rect
break;
}
case ClrAlignment.CENTER: {
verticalOffset -= content.height / 2; // pull content back up to the middle of the content rect
break;
}
case ClrAlignment.END: {
verticalOffset -= content.height; // pull content back up to the bottom of the content rect
break;
}
default: {
break;
}
}
return verticalOffset;
}
export function testVisibility(offset, content) {
const violations = [];
const mockCoords = {
bottom: offset.yOffset + content.height,
left: offset.xOffset,
right: offset.xOffset + content.width,
top: offset.yOffset,
};
if (!(mockCoords.top >= 0)) {
violations.push(ClrViewportViolation.TOP);
}
if (!(mockCoords.left >= 0)) {
violations.push(ClrViewportViolation.LEFT);
}
if (!(mockCoords.bottom <= (window.innerHeight || document.documentElement.clientHeight))) {
violations.push(ClrViewportViolation.BOTTOM);
}
if (!(mockCoords.right <= (window.innerWidth || document.documentElement.clientWidth))) {
violations.push(ClrViewportViolation.RIGHT);
}
return violations;
}
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All Rights Reserved.\n * This software is released under MIT license.\n * The full license information can be found in LICENSE in the root directory of this project.\n */\n\nimport { ClrAlignment } from './enums/alignment.enum';\nimport { ClrViewportViolation } from './enums/viewport-violation.enum';\nimport { ClrPopoverContentOffset } from './interfaces/popover-content-offset.interface';\nimport { ClrPopoverPosition } from './interfaces/popover-position.interface';\nimport { ClrVisibilityCoords } from './interfaces/visibility-coords.interface';\n\n// Put the forward arg here but it is only needed when nudging content or anchors.\nexport type ClrTransform = (position: ClrPopoverPosition, back?: boolean) => ClrPopoverPosition;\n\nexport const flipSides: ClrTransform = position => {\n  return {\n    ...position,\n    side: -1 * position.side,\n  };\n};\n\n// This could be used in more advanced positioning algorithms.\n// flipAxisFlipSideAndNudgeContent(flipAxis, flipSide, nudge, nudgeForward?): ClrTransform {...}\n// I would like to keep it for now.\nexport const flipAxis: ClrTransform = position => {\n  return {\n    ...position,\n    axis: position.axis === 0 ? 1 : 0,\n  };\n};\n\nexport const nudgeContent: ClrTransform = (position, forward) => {\n  const nextAlignment = position.content + (forward ? 0.5 : -0.5);\n  if (nextAlignment < 0 || nextAlignment > 1) {\n    return position;\n  } else {\n    return {\n      ...position,\n      content: nextAlignment,\n    };\n  }\n};\n\nexport function flipSidesAndNudgeContent(flip: ClrTransform, nudge: ClrTransform, nudgeBack?: boolean): ClrTransform {\n  return (position: ClrPopoverPosition): ClrPopoverPosition => nudge(flip(position), nudgeBack);\n}\n\nexport function align(position: ClrPopoverPosition, anchor: ClientRect, content: ClientRect): ClrPopoverContentOffset {\n  let xDiff = anchor.left;\n  let yDiff = anchor.top;\n\n  // When ClrAxis is VERTICAL BEFORE = left, AFTER = right\n  // When ClrAxis is HORIZONTAL BEFORE is top, AFTER is bottom\n  switch (position.axis + position.side) {\n    case -1: {\n      // ClrAxis.VERTICAL + ClrSide.BEFORE\n      xDiff += alignHorizontal(position, anchor, content);\n      yDiff -= content.height; // pull content up to the top of the anchor\n      break;\n    }\n    case 1: {\n      // ClrAxis.VERTICAL + ClrSide.AFTER\n      xDiff += alignHorizontal(position, anchor, content);\n      yDiff += anchor.height; // push the content down to below the anchor\n      break;\n    }\n    case 0: {\n      // ClrAxis.HORIZONTAL + ClrSide.BEFORE\n      xDiff -= content.width; // pull the content left of the anchor\n      yDiff += alignVertical(position, anchor, content);\n      break;\n    }\n    case 2: {\n      // ClrAxis.HORIZONTAL + ClrSide.AFTER\n      xDiff += anchor.width; // push the content right of of the anchor\n      yDiff += alignVertical(position, anchor, content);\n      break;\n    }\n    default: {\n      break;\n    }\n  }\n  return { xOffset: xDiff, yOffset: yDiff };\n}\n\nfunction alignHorizontal(position: ClrPopoverPosition, anchor: ClientRect, content: ClientRect): number {\n  let horizontalOffset = 0;\n  // horizontal offset for the anchor position\n  switch (position.anchor /*calculate for the anchor alignment*/) {\n    case ClrAlignment.START: {\n      // nothing to calculate here\n      break;\n    }\n    case ClrAlignment.CENTER: {\n      horizontalOffset += anchor.width / 2; // push content over 1/2 anchor width\n      break;\n    }\n    case ClrAlignment.END: {\n      horizontalOffset += anchor.width; //  push content over width of the anchor\n      break;\n    }\n    default: {\n      break;\n    }\n  }\n\n  // horizontal offsets for anchor alignment\n  switch (\n    position.content // calculate for the content alignment\n  ) {\n    case ClrAlignment.START: {\n      // Nothing to calculate here\n      break;\n    }\n    case ClrAlignment.CENTER: {\n      horizontalOffset -= content.width / 2; // pull content left by a value of 1/2 content width\n      break;\n    }\n    case ClrAlignment.END: {\n      // subtract the width of currentContent from horizontalOffset to pull it back\n      horizontalOffset -= content.width;\n      break;\n    }\n    default: {\n      break;\n    }\n  }\n\n  return horizontalOffset;\n}\n\nfunction alignVertical(position: ClrPopoverPosition, anchor: ClientRect, content: ClientRect): number {\n  // y axis offsets for anchor alignment\n  let verticalOffset = 0;\n\n  // Calculate y offset for anchor position\n  switch (position.anchor) {\n    case ClrAlignment.START: {\n      // nothing to calculate here\n      break;\n    }\n    case ClrAlignment.CENTER: {\n      verticalOffset += anchor.height / 2; // push content down to the middle of the anchor rect\n      break;\n    }\n    case ClrAlignment.END: {\n      verticalOffset += anchor.height; // push content down to the bottom of the anchor\n      break;\n    }\n    default: {\n      break;\n    }\n  }\n\n  // Calculate y offsets for content alignment\n  switch (position.content) {\n    case ClrAlignment.START: {\n      // aligned to the top of the content rect\n      break;\n    }\n    case ClrAlignment.CENTER: {\n      verticalOffset -= content.height / 2; // pull content back up to the middle of the content rect\n      break;\n    }\n    case ClrAlignment.END: {\n      verticalOffset -= content.height; // pull content back up to the bottom of the content rect\n      break;\n    }\n    default: {\n      break;\n    }\n  }\n  return verticalOffset;\n}\n\nexport function testVisibility(offset: ClrPopoverContentOffset, content: ClientRect): ClrViewportViolation[] {\n  const violations: ClrViewportViolation[] = [];\n  const mockCoords: ClrVisibilityCoords = {\n    bottom: offset.yOffset + content.height,\n    left: offset.xOffset,\n    right: offset.xOffset + content.width,\n    top: offset.yOffset,\n  };\n\n  if (!(mockCoords.top >= 0)) {\n    violations.push(ClrViewportViolation.TOP);\n  }\n  if (!(mockCoords.left >= 0)) {\n    violations.push(ClrViewportViolation.LEFT);\n  }\n  if (!(mockCoords.bottom <= (window.innerHeight || document.documentElement.clientHeight))) {\n    violations.push(ClrViewportViolation.BOTTOM);\n  }\n  if (!(mockCoords.right <= (window.innerWidth || document.documentElement.clientWidth))) {\n    violations.push(ClrViewportViolation.RIGHT);\n  }\n\n  return violations;\n}\n"]}