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<style>
:host {
/* Variables controlling the rendered post selection */
--post-selection-corner-width: 4px;
--post-selection-corner-hitbox-max-size: 40px;
position: relative;
}
#postSelectionScrim {
background-color: var(--color-scrim);
height: 100%;
opacity: 20%;
transition: opacity cubic-bezier(0.2, 0, 0, 1) 400ms;
width: 100%;
}
:host([region-selected-glow-enabled]) #postSelectionScrim {
/* Hide this scrim because its superfluous here - the region_selection scrim
* is already active and has transitioned to its post-selection opacity. */
display: none;
}
/** Render the selected part of the image again so it appears glowing over
the scrim */
#backgroundImageCanvas {
clip-path: rect(
var(--selection-top) calc(var(--selection-left) + var(--selection-width))
calc(var(--selection-top) + var(--selection-height)) var(--selection-left) round
var(--post-selection-cutout-corner-radius)
);
height: 100%;
inset: 0;
object-fit: contain;
position: absolute;
width: 100%;
}
:host([region-selected-glow-enabled]) #backgroundImageCanvas {
/* Do not use z-index once region-selection-glow-enabled is launched.
* Instead, move the backgroundImageCanvas higher in the DOM. */
z-index: 2;
}
#postSelection {
/* Scrim is rendered here too, so that the rendered screenshot is dark
* as if it were under the scrim as well. */
background-color: var(--color-scrim);
border-radius: var(--post-selection-cutout-corner-radius);
height: var(--selection-height);
left: var(--selection-left);
margin: auto;
opacity: 5%;
position: absolute;
top: var(--selection-top);
transition: opacity 100ms cubic-bezier(0.3, 0, 1, 1);
width: var(--selection-width);
}
:host([region-selected-glow-enabled]) #postSelection {
background-color: transparent;
opacity: 1;
transition: none;
}
:host([region-selected-glow-enabled]) #postSelection:before {
animation: postSelectionGlowFadeIn 120ms cubic-bezier(0, 0, 0, 1) forwards;
background: conic-gradient(
from 90deg at center,
var(--gradient-blue) 0deg,
var(--gradient-blue) 162deg,
var(--gradient-red) 216deg,
var(--gradient-yellow) 274deg,
var(--gradient-green) 331deg
);
content: "";
/* Generally blur should be avoided for performance reasons but it's ok here
* because it's only being calculated once */
filter: blur(var(--region-selected-glow-blur-radius, 0px));
inset: 0;
/* Set opacity to 0 to prevent the glow from being visible until the
* animation starts. */
opacity: 0;
position: absolute;
/* Necessary to position above the region selection scrim. */
z-index: 1;
}
@keyframes postSelectionGlowFadeIn {
0% {
opacity: 0;
}
100% {
opacity: 1;
}
}
:host([should-darken-scrim]:not([region-selected-glow-enabled])) #postSelection {
opacity: 20%;
}
#selectionCorners {
background-image: paint(post-selection);
forced-color-adjust: none;
height: calc(var(--selection-height) + (2 * var(--post-selection-corner-width)));
left: calc(var(--selection-left) - var(--post-selection-corner-width));
position: absolute;
top: calc(var(--selection-top) - var(--post-selection-corner-width));
width: calc(var(--selection-width) + (2 * var(--post-selection-corner-width)));
z-index: 5; /* Position above words. */
}
.corner-hit-box {
height: 50%;
max-height: var(--post-selection-corner-hitbox-max-size);
max-width: var(--post-selection-corner-hitbox-max-size);
min-height: var(--post-selection-corner-length);
min-width: var(--post-selection-corner-length);
pointer-events: all;
position: absolute;
width: 50%;
}
.corner-hit-box:focus-within {
outline: auto 5px -webkit-focus-ring-color;
}
#topLeft {
cursor: nw-resize;
left: 0;
top: 0;
transform: translate(-25%, -25%);
}
#topRight {
cursor: ne-resize;
top: 0;
right: 0;
transform: translate(25%, -25%);
}
#bottomRight {
cursor: se-resize;
bottom: 0;
right: 0;
transform: translate(25%, 25%);
}
#bottomLeft {
cursor: sw-resize;
bottom: 0;
left: 0;
transform: translate(-25%, 25%);
}
.slider {
height: inherit;
width: inherit;
pointer-events: none;
position: absolute;
opacity: 0;
}
</style>
<div id="postSelectionScrim" style$="[[getScrimStyleProperties(height, width)]]"></div>
<div hidden$="[[!hasSelection(height, width)]]">
<canvas
id="backgroundImageCanvas"
height="[[canvasPhysicalHeight]]"
width="[[canvasPhysicalWidth]]"
style$="height: [[canvasHeight]]px; width: [[canvasWidth]]px;"
>
</canvas>
<div
style$="[[getPostSelectionStyles(height, width, selectionOverlayRect)]]"
id="postSelection"
></div>
<div id="selectionCorners">
<template is="dom-repeat" items="[[cornerIds]]">
<div id="[[item]]" class="corner-hit-box">
<template is="dom-if" if="[[cornerSlidersEnabled]]">
<input
id="[[item]]Slider"
type="range"
tabindex="0"
min="-1"
max="101"
step="1"
class="slider"
on-change="handleSliderChange"
data-corner-id$="[[item]]"
/>
</template>
</div>
</template>
</div>
</div>
|
