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Potential solution to supporting transparent 'show more' buttons

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In this demonstration, we remove the cutting line (as it collides with the tile in a weird spot) and instead replace the tile with a placeholder when the text is about to collide with the avatar in the tile. We use a `round()` for this because through some amazing coincidence the collision happens at 0.47, which is close enough to 0.5 for people not to notice.
This commit is contained in:
Travis Ralston 2020-07-08 16:09:45 -06:00
parent 3abf1586f9
commit 8972cf9378
3 changed files with 13 additions and 21 deletions
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20
res/css/views/rooms/_RoomSublist2.scss
View file

@ -187,16 +187,16 @@ limitations under the License.
flex-direction: column;
overflow: hidden;
.mx_RoomSublist2_placeholder {
height: 44px; // Height of a room tile plus margins
}
.mx_RoomSublist2_showNButton {
cursor: pointer;
font-size: $font-13px;
line-height: $font-18px;
color: $roomtile2-preview-color;
// This is the same color as the left panel background because it needs
// to occlude the lastmost tile in the list.
background-color: $roomlist2-bg-color;
// Update the render() function for RoomSublist2 if these change
// Update the ListLayout class for minVisibleTiles if these change.
//
@ -209,7 +209,7 @@ limitations under the License.
// We force this to the bottom so it will overlap rooms as needed.
// We account for the space it takes up (24px) in the code through padding.
position: absolute;
bottom: 0; // the height of the resize handle
bottom: 0;
left: 0;
right: 0;
@ -236,16 +236,6 @@ limitations under the License.
.mx_RoomSublist2_showLessButtonChevron {
mask-image: url('$(res)/img/feather-customised/chevron-up.svg');
}
&.mx_RoomSublist2_isCutting::before {
content: '';
position: absolute;
top: 0;
left: 0;
right: 0;
height: 4px;
box-shadow: 0px -2px 3px rgba(46, 47, 50, 0.08);
}
}
// Class name comes from the ResizableBox component

10
src/components/views/rooms/RoomSublist2.tsx
View file

@ -560,10 +560,8 @@ export default class RoomSublist2 extends React.Component<IProps, IState> {
if (visibleTiles.length > 0) {
const layout = this.props.layout; // to shorten calls
const maxTilesFactored = layout.tilesWithResizerBoxFactor(this.numTiles);
const showMoreBtnClasses = classNames({
'mx_RoomSublist2_showNButton': true,
'mx_RoomSublist2_isCutting': this.state.isResizing && layout.visibleTiles < maxTilesFactored,
});
// If we're hiding rooms, show a 'show more' button to the user. This button
@ -642,6 +640,14 @@ export default class RoomSublist2 extends React.Component<IProps, IState> {
const tilesWithoutPadding = Math.min(relativeTiles, layout.visibleTiles);
const tilesPx = layout.calculateTilesToPixelsMin(relativeTiles, tilesWithoutPadding, padding);
// Now that we know our padding constraints, let's find out if we need to chop off the
// last rendered visible tile so it doesn't collide with the 'show more' button
let visibleUnpaddedTiles = Math.round(layout.visibleTiles - layout.pixelsToTiles(padding));
if (visibleUnpaddedTiles === visibleTiles.length - 1) {
const placeholder = <div className="mx_RoomSublist2_placeholder" key='placeholder' />;
visibleTiles.splice(visibleUnpaddedTiles, 1, placeholder);
}
const dimensions = {
height: tilesPx,
};

4
src/stores/room-list/ListLayout.ts
View file

@ -109,10 +109,6 @@ export class ListLayout {
return this.tilesToPixels(Math.min(maxTiles, n)) + padding;
}
public tilesWithResizerBoxFactor(n: number): number {
return n + RESIZER_BOX_FACTOR;
}
public tilesWithPadding(n: number, paddingPx: number): number {
return this.pixelsToTiles(this.tilesToPixelsWithPadding(n, paddingPx));
}