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Remake Eyedropper tool to sample pixel colors from viewport canvas (#801)

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* Remake Eyedropper tool to sample pixel colors from viewport canvas

* Bug fixes

* Reorder export buttons

* Remove the larger primary/secondary ring

* Add aborting with Escape
This commit is contained in:
Keavon Chambers
2022-10-21 01:50:02 -07:00
committed by GitHub
parent 30719bdc72
commit f2db20f061
17 changed files with 454 additions and 131 deletions
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frontend/src/components/floating-menus/EyedropperPreview.vue
+125
View File
@@ -0,0 +1,125 @@
<template>
<FloatingMenu
:open="true"
class="eyedropper-preview"
:type="'Cursor'"
:style="{ '--ring-color-primary': primaryColor, '--ring-color-secondary': secondaryColor, '--ring-color-choice': colorChoice }"
>
<div class="ring">
<div class="canvas-container">
<canvas ref="zoomPreviewCanvas"></canvas>
<div class="pixel-outline"></div>
</div>
</div>
</FloatingMenu>
</template>
<style lang="scss">
.eyedropper-preview {
pointer-events: none;
.ring {
transform: translate(0, -50%) rotate(45deg);
position: relative;
background: var(--ring-color-choice);
padding: 16px;
border: 8px solid;
border-radius: 50%;
border-top-color: var(--ring-color-primary);
border-left-color: var(--ring-color-primary);
border-bottom-color: var(--ring-color-secondary);
border-right-color: var(--ring-color-secondary);
box-shadow: 0 0 8px rgba(0, 0, 0, 0.25);
.canvas-container {
transform: rotate(-45deg);
canvas {
width: 110px;
height: 110px;
border-radius: 50%;
image-rendering: pixelated;
}
&::after {
content: "";
position: absolute;
top: 0;
left: 0;
width: 100%;
height: 100%;
border-radius: 50%;
box-shadow: inset 0 0 8px rgba(0, 0, 0, 0.25);
}
.pixel-outline {
position: absolute;
left: 50%;
top: 50%;
transform: translate(-50%, -50%);
--outline-width: 2;
margin-top: calc(-1px * (var(--outline-width) / 2));
width: calc(10px - (var(--outline-width) * 1px));
height: calc(10px - var(--outline-width) * 1px);
border: calc(var(--outline-width) * 1px) solid var(--color-0-black);
}
}
}
}
</style>
<script lang="ts">
import { defineComponent, type PropType } from "vue";
import FloatingMenu from "@/components/floating-menus/FloatingMenu.vue";
// Should be equal to the width and height of the canvas in the CSS above
const ZOOM_WINDOW_DIMENSIONS_EXPANDED = 110;
// SHould be equal to the width and height of the `.pixel-outline` div in the CSS above, and should be evenly divisible into the number above
const UPSCALE_FACTOR = 10;
export const ZOOM_WINDOW_DIMENSIONS = ZOOM_WINDOW_DIMENSIONS_EXPANDED / UPSCALE_FACTOR;
const temporaryCanvas = document.createElement("canvas");
export default defineComponent({
props: {
imageData: { type: Object as PropType<ImageData> },
colorChoice: { type: String as PropType<string>, required: true },
primaryColor: { type: String as PropType<string>, required: true },
secondaryColor: { type: String as PropType<string>, required: true },
},
mounted() {
this.displayImageDataPreview(this.imageData);
},
watch: {
imageData(imageData: ImageData | undefined) {
this.displayImageDataPreview(imageData);
},
},
methods: {
displayImageDataPreview(imageData: ImageData | undefined) {
const canvas = this.$refs.zoomPreviewCanvas as HTMLCanvasElement;
canvas.width = ZOOM_WINDOW_DIMENSIONS;
canvas.height = ZOOM_WINDOW_DIMENSIONS;
const context = canvas.getContext("2d");
temporaryCanvas.width = ZOOM_WINDOW_DIMENSIONS;
temporaryCanvas.height = ZOOM_WINDOW_DIMENSIONS;
const temporaryContext = temporaryCanvas.getContext("2d");
if (!imageData || !context || !temporaryContext) return;
temporaryContext.putImageData(imageData, 0, 0, 0, 0, ZOOM_WINDOW_DIMENSIONS, ZOOM_WINDOW_DIMENSIONS);
context.fillStyle = "black";
context.fillRect(0, 0, ZOOM_WINDOW_DIMENSIONS, ZOOM_WINDOW_DIMENSIONS);
context.drawImage(temporaryCanvas, 0, 0);
},
},
components: {
FloatingMenu,
},
});
</script>
frontend/src/components/floating-menus/FloatingMenu.vue
+10 -1
View File
@@ -110,6 +110,13 @@
--floating-menu-content-border-radius: 4px;
}
&.cursor .floating-menu-container .floating-menu-content {
background: none;
box-shadow: none;
border-radius: 0;
padding: 0;
}
&.center {
justify-content: center;
align-items: center;
@@ -180,7 +187,7 @@ import { defineComponent, nextTick, type PropType } from "vue";
import LayoutCol from "@/components/layout/LayoutCol.vue";
export type MenuDirection = "Top" | "Bottom" | "Left" | "Right" | "TopLeft" | "TopRight" | "BottomLeft" | "BottomRight" | "Center";
export type MenuType = "Popover" | "Dropdown" | "Dialog";
export type MenuType = "Popover" | "Dropdown" | "Dialog" | "Cursor";
const POINTER_STRAY_DISTANCE = 100;
@@ -235,6 +242,8 @@ export default defineComponent({
this.minWidthParentWidth = entries[0].contentRect.width;
},
positionAndStyleFloatingMenu() {
if (this.type === "Cursor") return;
const workspace = document.querySelector("[data-workspace]");
const floatingMenuContainer = this.$refs.floatingMenuContainer as HTMLElement;
const floatingMenuContentComponent = this.$refs.floatingMenuContent as typeof LayoutCol;