mirror of
https://github.com/mealie-recipes/mealie.git
synced 2025-12-02 16:44:05 -05:00
feat (WIP): bring png OCR scanning support (#1670)
* Add pytesseract * Add simple ocr endpoint replace extension argument * feat/ocr-editor gui * fix frontend linting issues * Add service unit tests * Add split text modes & single ingredient/instruction editing * make split mode really reactive * Remove default step and ingredient * make the linter haappy * Accept only image uploads * Add automatic recipe title suggestion * Correct regex * fix incorrect array.map method usage * make the linter happy again * Swap route to use asset name * Rearange buttons * fix test data * feat: Allow making image the recipe image * Add translation * Make the linter happy * Restrict function setPropertyValueByPath generic * Restrict template literal type * Add a more friendly icon to creation page * update poetry lock file * Correct sloppy ocr classes * Make MyPy happy * Rewrite safer tests * Add tesseract to backend test CI container dependencies * Make canvas element a component global * Remove unwanted spaces in selected text * Add way to know if recipe was created with ocr * Access to ocr-editor for ocr recipes * Update Alembic revision * Make the frontend build * Fix scrolling offset bug * Allow creation of recipes with custom settings * Fix rebasing mistakes * Add format_tsv_output test * Exclude the tests data directory only * Enforce camelCase for frontend functions * Remove import of unused component * Fix type and class initialization * Add multi-language support * Highlight words in mount * Fix image ratio bug * Better ocr creation page * Revert awkward feature to scroll in Selection mode * Rebasing alembic migrations sux * Remove obsolete getShared function * Add function docstring * Move down ocr creation option * Make toolbar icons more generic * Show help at the bottom of the page * move ocr types to own file * Use template ref for the canvas * Use i18n.tc to get strings directly * Correct naming mistake * Move Ocr editor to own directory * Create Ocr Editor parts * Safeguard recipe properties access * Add loading frontend animation due to longer request time * minor cleanup chores Co-authored-by: Miroito <alban.vachette@gmail.com>
This commit is contained in:
Hayden
GitHub
@@ -0,0 +1,484 @@
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<template>
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<v-card flat tile>
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<v-toolbar v-for="(section, idx) in toolbarIcons" :key="section.sectionTitle" dense style="float: left">
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<v-toolbar-title bottom>
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{{ section.sectionTitle }}
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</v-toolbar-title>
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<v-tooltip v-for="icon in section.icons" :key="icon.name" bottom>
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<template #activator="{ on, attrs }">
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<v-btn icon @click="section.eventHandler(icon.name)">
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<v-icon :color="section.highlight === icon.name ? 'primary' : 'default'" v-bind="attrs" v-on="on">
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{{ icon.icon }}
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</v-icon>
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</v-btn>
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</template>
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<span>{{ icon.tooltip }}</span>
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</v-tooltip>
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<v-divider v-if="idx != toolbarIcons.length - 1" vertical class="mx-2" />
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</v-toolbar>
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<v-toolbar dense style="float: right">
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<BaseButton class="ml-1 mr-1" save @click="updateRecipe()">
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{{ $t("general.save") }}
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</BaseButton>
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<BaseButton cancel @click="closeEditor()">
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{{ $t("general.close") }}
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</BaseButton>
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</v-toolbar>
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<canvas
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ref="canvas"
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@mousedown="handleMouseDown"
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@mouseup="handleMouseUp"
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@mousemove="handleMouseMove"
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@wheel="handleMouseScroll"
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>
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</canvas>
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<span style="white-space: pre-wrap">
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{{ selectedText }}
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</span>
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</v-card>
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</template>
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<script lang="ts">
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import { defineComponent, reactive, useContext, ref, toRefs, watch } from "@nuxtjs/composition-api";
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import { onMounted } from "vue-demi";
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import { OcrTsvResponse } from "~/types/api-types/ocr";
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import { CanvasModes, SelectedTextSplitModes, ImagePosition, Mouse, CanvasRect, ToolbarIcons } from "~/types/ocr-types";
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export default defineComponent({
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props: {
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image: {
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type: HTMLImageElement,
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required: true,
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},
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tsv: {
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type: Array as () => OcrTsvResponse[],
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required: true,
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},
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},
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setup(props, context) {
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const state = reactive({
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canvas: null as HTMLCanvasElement | null,
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ctx: null as CanvasRenderingContext2D | null,
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canvasRect: null as DOMRect | null,
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rect: {
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startX: 0,
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startY: 0,
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w: 0,
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h: 0,
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},
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mouse: {
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current: {
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x: 0,
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y: 0,
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},
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down: false,
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},
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selectedText: "",
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canvasMode: "selection" as CanvasModes,
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imagePosition: {
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sx: 0,
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sy: 0,
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sWidth: 0,
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sHeight: 0,
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dx: 0,
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dy: 0,
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dWidth: 0,
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dHeight: 0,
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scale: 1,
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panStartPoint: {
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x: 0,
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y: 0,
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},
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} as ImagePosition,
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isImageSmallerThanCanvas: false,
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selectedTextSplitMode: "lineNum" as SelectedTextSplitModes,
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});
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watch(
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() => state.selectedText,
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(value) => {
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context.emit("text-selected", value);
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}
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);
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onMounted(() => {
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if (state.canvas === null) return; // never happens because the ref "canvas" is in the template
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state.ctx = state.canvas.getContext("2d") as CanvasRenderingContext2D;
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state.ctx.imageSmoothingEnabled = false;
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state.canvasRect = state.canvas.getBoundingClientRect();
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state.canvas.width = state.canvasRect.width;
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if (props.image.width < state.canvas.width) {
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state.isImageSmallerThanCanvas = true;
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}
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state.imagePosition.dWidth = state.canvas.width;
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updateImageScale();
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state.canvas.height = Math.min(props.image.height * state.imagePosition.scale, 700); // Max height of 700px
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state.imagePosition.sWidth = props.image.width;
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state.imagePosition.sHeight = props.image.height;
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state.imagePosition.dWidth = state.canvas.width;
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drawImage(state.ctx);
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drawWordBoxesOnCanvas(props.tsv);
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});
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function handleMouseDown(event: MouseEvent) {
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if (state.canvasRect === null || state.canvas === null || state.ctx === null) return;
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state.mouse.down = true;
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updateMousePos(event);
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if (state.canvasMode === "selection") {
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if (isMouseInRect(state.mouse, state.rect)) {
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context.emit("setText", state.selectedText);
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} else {
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state.ctx.fillStyle = "rgb(255, 255, 255)";
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state.ctx.fillRect(0, 0, state.canvas.width, state.canvas.height);
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drawImage(state.ctx);
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state.rect.startX = state.mouse.current.x;
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state.rect.startY = state.mouse.current.y;
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resetSelection();
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}
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return;
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}
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if (state.canvasMode === "panAndZoom") {
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state.imagePosition.panStartPoint.x = state.mouse.current.x - state.imagePosition.dx;
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state.imagePosition.panStartPoint.y = state.mouse.current.y - state.imagePosition.dy;
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resetSelection();
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}
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}
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function handleMouseUp(_event: MouseEvent) {
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if (state.canvasRect === null) return;
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state.mouse.down = false;
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state.selectedText = getWordsInSelection(props.tsv, state.rect);
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}
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function handleMouseMove(event: MouseEvent) {
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if (state.canvasRect === null || state.canvas === null || state.ctx === null) return;
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updateMousePos(event);
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if (state.mouse.down) {
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if (state.canvasMode === "selection") {
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state.rect.w = state.mouse.current.x - state.rect.startX;
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state.rect.h = state.mouse.current.y - state.rect.startY;
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draw();
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return;
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}
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if (state.canvasMode === "panAndZoom") {
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state.canvas.style.cursor = "move";
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state.imagePosition.dx = state.mouse.current.x - state.imagePosition.panStartPoint.x;
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state.imagePosition.dy = state.mouse.current.y - state.imagePosition.panStartPoint.y;
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keepImageInCanvas();
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state.ctx.fillStyle = "rgb(255, 255, 255)";
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state.ctx.fillRect(0, 0, state.canvas.width, state.canvas.height);
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drawImage(state.ctx);
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return;
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}
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}
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if (isMouseInRect(state.mouse, state.rect) && state.canvasMode === "selection") {
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state.canvas.style.cursor = "pointer";
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} else {
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state.canvas.style.cursor = "default";
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}
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}
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const scrollSensitivity = 0.05;
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function handleMouseScroll(event: WheelEvent) {
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if (state.isImageSmallerThanCanvas) return;
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if (state.canvasRect === null || state.canvas === null || state.ctx === null) return;
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if (state.canvasMode === "panAndZoom") {
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event.preventDefault();
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updateMousePos(event);
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const m = Math.sign(event.deltaY);
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const ndx = state.imagePosition.dx + m * state.imagePosition.dWidth * scrollSensitivity;
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const ndy = state.imagePosition.dy + m * state.imagePosition.dHeight * scrollSensitivity;
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const ndw = state.imagePosition.dWidth + -m * state.imagePosition.dWidth * scrollSensitivity * 2;
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const ndh = state.imagePosition.dHeight + -m * state.imagePosition.dHeight * scrollSensitivity * 2;
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if (ndw < props.image.width) {
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state.imagePosition.dx = ndx;
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state.imagePosition.dy = ndy;
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state.imagePosition.dWidth = ndw;
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state.imagePosition.dHeight = ndh;
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}
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keepImageInCanvas();
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updateImageScale();
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state.ctx.fillStyle = "rgb(255, 255, 255)";
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state.ctx.fillRect(0, 0, state.canvas.width, state.canvas.height);
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drawImage(state.ctx);
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}
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}
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function draw() {
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if (state.canvasRect === null || state.canvas === null || state.ctx === null) return;
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if (state.mouse.down) {
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state.ctx.imageSmoothingEnabled = false;
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state.ctx.fillStyle = "rgb(255, 255, 255)";
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state.ctx.fillRect(0, 0, state.canvas.width, state.canvas.height);
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drawImage(state.ctx);
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state.ctx.fillStyle = "rgba(255, 255, 255, 0.1)";
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state.ctx.setLineDash([6]);
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state.ctx.fillRect(state.rect.startX, state.rect.startY, state.rect.w, state.rect.h);
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state.ctx.strokeRect(state.rect.startX, state.rect.startY, state.rect.w, state.rect.h);
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}
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}
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function drawImage(ctx: CanvasRenderingContext2D) {
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ctx.drawImage(
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props.image,
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state.imagePosition.sx,
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state.imagePosition.sy,
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state.imagePosition.sWidth,
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state.imagePosition.sHeight,
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state.imagePosition.dx,
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state.imagePosition.dy,
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state.imagePosition.dWidth,
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state.imagePosition.dHeight
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);
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}
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function keepImageInCanvas() {
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if (state.canvasRect === null || state.canvas === null) return;
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// Prevent image from being smaller than the canvas width
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if (state.imagePosition.dWidth - state.canvas.width < 0) {
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state.imagePosition.dWidth = state.canvas.width;
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}
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// Prevent image from being smaller than the canvas height
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if (state.imagePosition.dHeight - state.canvas.height < 0) {
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state.imagePosition.dHeight = props.image.height * state.imagePosition.scale;
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}
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// Prevent to move the image too much to the left
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if (state.canvas.width - state.imagePosition.dx - state.imagePosition.dWidth > 0) {
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state.imagePosition.dx = state.canvas.width - state.imagePosition.dWidth;
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}
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// Prevent to move the image too much to the top
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if (state.canvas.height - state.imagePosition.dy - state.imagePosition.dHeight > 0) {
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state.imagePosition.dy = state.canvas.height - state.imagePosition.dHeight;
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}
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// Prevent to move the image too much to the right
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if (state.imagePosition.dx > 0) {
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state.imagePosition.dx = 0;
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}
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// Prevent to move the image too much to the bottom
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if (state.imagePosition.dy > 0) {
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state.imagePosition.dy = 0;
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}
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}
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function updateImageScale() {
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state.imagePosition.scale = state.imagePosition.dWidth / props.image.width;
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// force the original ratio to be respected
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state.imagePosition.dHeight = props.image.height * state.imagePosition.scale;
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||||
// Don't let images bigger than the canvas be zoomed in more than 1:1 scale
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// Meaning only let images smaller than the canvas to have a scale > 1
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if (!state.isImageSmallerThanCanvas && state.imagePosition.scale > 1) {
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state.imagePosition.scale = 1;
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}
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}
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function resetSelection() {
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if (state.canvasRect === null) return;
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state.rect.w = 0;
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||||
state.rect.h = 0;
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||||
state.selectedText = "";
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}
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|
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function updateMousePos<T extends MouseEvent>(event: T) {
|
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if (state.canvas === null) return;
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state.canvasRect = state.canvas.getBoundingClientRect();
|
||||
state.mouse.current = {
|
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x: event.clientX - state.canvasRect.left,
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y: event.clientY - state.canvasRect.top,
|
||||
};
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||||
}
|
||||
|
||||
function isMouseInRect(mouse: Mouse, rect: CanvasRect) {
|
||||
if (state.canvasRect === null) return;
|
||||
const correctRect = correctRectCoordinates(rect);
|
||||
|
||||
return (
|
||||
mouse.current.x > correctRect.startX &&
|
||||
mouse.current.x < correctRect.startX + correctRect.w &&
|
||||
mouse.current.y > correctRect.startY &&
|
||||
mouse.current.y < correctRect.startY + correctRect.h
|
||||
);
|
||||
}
|
||||
|
||||
/**
|
||||
* Returns rectangle coordinates with positive dimensions
|
||||
* @param rect A rectangle
|
||||
* @returns An equivalent rectangle with width and height > 0
|
||||
*/
|
||||
function correctRectCoordinates(rect: CanvasRect) {
|
||||
if (rect.w < 0) {
|
||||
rect.startX = rect.startX + rect.w;
|
||||
rect.w = -rect.w;
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||||
}
|
||||
|
||||
if (rect.h < 0) {
|
||||
rect.startY = rect.startY + rect.h;
|
||||
rect.h = -rect.h;
|
||||
}
|
||||
return rect;
|
||||
}
|
||||
|
||||
function drawWordBoxesOnCanvas(tsv: OcrTsvResponse[]) {
|
||||
if (state.canvasRect === null || state.canvas === null || state.ctx === null) return;
|
||||
|
||||
state.ctx.fillStyle = "rgb(255, 255, 255, 0.3)";
|
||||
tsv
|
||||
.filter((element) => element.level === 5)
|
||||
.forEach((element) => {
|
||||
if (state.canvasRect === null || state.canvas === null || state.ctx === null) return;
|
||||
state.ctx.fillRect(
|
||||
element.left * state.imagePosition.scale,
|
||||
element.top * state.imagePosition.scale,
|
||||
element.width * state.imagePosition.scale,
|
||||
element.height * state.imagePosition.scale
|
||||
);
|
||||
});
|
||||
}
|
||||
|
||||
// Event emitters
|
||||
const updateRecipe = function () {
|
||||
context.emit("update-recipe");
|
||||
};
|
||||
|
||||
const closeEditor = function () {
|
||||
context.emit("close-editor");
|
||||
};
|
||||
|
||||
// TOOLBAR STUFF
|
||||
|
||||
const { $globals, i18n } = useContext();
|
||||
|
||||
const toolbarIcons = ref<ToolbarIcons<CanvasModes | SelectedTextSplitModes>>([
|
||||
{
|
||||
sectionTitle: "Toolbar",
|
||||
eventHandler: switchCanvasMode,
|
||||
highlight: state.canvasMode,
|
||||
icons: [
|
||||
{
|
||||
name: "selection",
|
||||
icon: $globals.icons.selectMode,
|
||||
tooltip: i18n.tc("ocr-editor.selection-mode"),
|
||||
},
|
||||
{
|
||||
name: "panAndZoom",
|
||||
icon: $globals.icons.panAndZoom,
|
||||
tooltip: i18n.tc("ocr-editor.pan-and-zoom-picture"),
|
||||
},
|
||||
],
|
||||
},
|
||||
{
|
||||
sectionTitle: i18n.tc("ocr-editor.split-text"),
|
||||
eventHandler: switchSplitTextMode,
|
||||
highlight: state.selectedTextSplitMode,
|
||||
icons: [
|
||||
{
|
||||
name: "lineNum",
|
||||
icon: $globals.icons.preserveLines,
|
||||
tooltip: i18n.tc("ocr-editor.preserve-line-breaks"),
|
||||
},
|
||||
{
|
||||
name: "blockNum",
|
||||
icon: $globals.icons.preserveBlocks,
|
||||
tooltip: i18n.tc("ocr-editor.split-by-block"),
|
||||
},
|
||||
{
|
||||
name: "flatten",
|
||||
icon: $globals.icons.flatten,
|
||||
tooltip: i18n.tc("ocr-editor.flatten"),
|
||||
},
|
||||
],
|
||||
},
|
||||
]);
|
||||
|
||||
function switchCanvasMode(mode: CanvasModes) {
|
||||
if (state.canvasRect === null || state.canvas === null) return;
|
||||
state.canvasMode = mode;
|
||||
toolbarIcons.value[0].highlight = mode;
|
||||
if (mode === "panAndZoom") {
|
||||
state.canvas.style.cursor = "pointer";
|
||||
} else {
|
||||
state.canvas.style.cursor = "default";
|
||||
}
|
||||
}
|
||||
|
||||
function switchSplitTextMode(mode: SelectedTextSplitModes) {
|
||||
if (state.canvasRect === null) return;
|
||||
state.selectedTextSplitMode = mode;
|
||||
toolbarIcons.value[1].highlight = mode;
|
||||
state.selectedText = getWordsInSelection(props.tsv, state.rect);
|
||||
}
|
||||
|
||||
/**
|
||||
* Using rectangle coordinates, filters the tsv to get text elements contained
|
||||
* inside the rectangle
|
||||
* Additionaly adds newlines depending on the current "text split" mode
|
||||
* @param tsv An Object containing tesseracts tsv fields
|
||||
* @param rect Coordinates of a rectangle
|
||||
* @returns Text from tsv contained in the rectangle
|
||||
*/
|
||||
function getWordsInSelection(tsv: OcrTsvResponse[], rect: CanvasRect) {
|
||||
const correctedRect = correctRectCoordinates(rect);
|
||||
|
||||
return tsv
|
||||
.filter(
|
||||
(element) =>
|
||||
element.level === 5 &&
|
||||
correctedRect.startY - state.imagePosition.dy < element.top * state.imagePosition.scale &&
|
||||
correctedRect.startX - state.imagePosition.dx < element.left * state.imagePosition.scale &&
|
||||
correctedRect.startX + correctedRect.w >
|
||||
(element.left + element.width) * state.imagePosition.scale + state.imagePosition.dx &&
|
||||
correctedRect.startY + correctedRect.h >
|
||||
(element.top + element.height) * state.imagePosition.scale + state.imagePosition.dy
|
||||
)
|
||||
.map((element, index, array) => {
|
||||
let separator = " ";
|
||||
if (
|
||||
state.selectedTextSplitMode !== "flatten" &&
|
||||
index !== array.length - 1 &&
|
||||
element[state.selectedTextSplitMode] !== array[index + 1][state.selectedTextSplitMode]
|
||||
) {
|
||||
separator = "\n";
|
||||
}
|
||||
return element.text + separator;
|
||||
})
|
||||
.join("");
|
||||
}
|
||||
|
||||
return {
|
||||
...toRefs(state),
|
||||
handleMouseDown,
|
||||
handleMouseUp,
|
||||
handleMouseMove,
|
||||
handleMouseScroll,
|
||||
toolbarIcons,
|
||||
updateRecipe,
|
||||
closeEditor,
|
||||
};
|
||||
},
|
||||
});
|
||||
</script>
|
||||
@@ -0,0 +1,54 @@
|
||||
<template>
|
||||
<v-card>
|
||||
<v-app-bar dense dark color="primary" class="mb-2">
|
||||
<v-icon large left>
|
||||
{{ $globals.icons.help }}
|
||||
</v-icon>
|
||||
<v-toolbar-title class="headline"> Help </v-toolbar-title>
|
||||
<v-spacer></v-spacer>
|
||||
</v-app-bar>
|
||||
<v-card-text>
|
||||
<h1>Mouse modes</h1>
|
||||
<v-divider class="mb-2 mt-1" />
|
||||
<h2 class="my-2">
|
||||
<v-icon> {{ $globals.icons.selectMode }} </v-icon>{{ $t("ocr-editor.help.selection-mode") }}
|
||||
</h2>
|
||||
<p class="my-1">{{ $t("ocr-editor.help.selection-mode") }}</p>
|
||||
<ol>
|
||||
<li>{{ $t("ocr-editor.help.selection-mode-steps.draw") }}</li>
|
||||
<li>{{ $t("ocr-editor.help.selection-mode-steps.click") }}</li>
|
||||
<li>{{ $t("ocr-editor.help.selection-mode-steps.result") }}</li>
|
||||
</ol>
|
||||
<h2 class="my-2">
|
||||
<v-icon> {{ $globals.icons.panAndZoom }} </v-icon>{{ $t("ocr-editor.help.pan-and-zoom-mode") }}
|
||||
</h2>
|
||||
{{ $t("ocr-editor.help.pan-and-zoom-desc") }}
|
||||
<h1 class="mt-5">{{ $t("ocr-editor.help.split-text-mode") }}</h1>
|
||||
<v-divider class="mb-2 mt-1" />
|
||||
<h2 class="my-2">
|
||||
<v-icon> {{ $globals.icons.preserveLines }} </v-icon>
|
||||
{{ $t("ocr-editor.help.split-modes.line-mode") }}
|
||||
</h2>
|
||||
<p>
|
||||
{{ $t("ocr-editor.help.split-modes.line-mode-desc") }}
|
||||
</p>
|
||||
<h2 class="my-2">
|
||||
<v-icon> {{ $globals.icons.preserveBlocks }} </v-icon>
|
||||
{{ $t("ocr-editor.help.split-modes.block-mode") }}
|
||||
</h2>
|
||||
<p>
|
||||
{{ $t("ocr-editor.help.split-modes.block-mode-desc") }}
|
||||
</p>
|
||||
<h2 class="my-2">
|
||||
<v-icon> {{ $globals.icons.flatten }} </v-icon> {{ $t("ocr-editor.help.split-modes.flat-mode") }}
|
||||
</h2>
|
||||
<p>{{ $t("ocr-editor.help.split-modes.flat-mode-desc") }}</p>
|
||||
</v-card-text>
|
||||
</v-card>
|
||||
</template>
|
||||
|
||||
<script lang="ts">
|
||||
import { defineComponent } from "@nuxtjs/composition-api";
|
||||
|
||||
export default defineComponent({});
|
||||
</script>
|
||||
Reference in New Issue
Block a user