Compare commits
4 Commits
| Author | SHA1 | Date | |
|---|---|---|---|
| fe577a674c | |||
| 8760377927 | |||
| 7f9235dbdc | |||
| bb3ac1c946 |
@@ -6,16 +6,17 @@
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* --td-column-gap value, so it is not in this static stylesheet.
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*
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* Below: click-and-drag horizontal scrolling (added by Asset/js/drag-scroll.js when the
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* "Drag the board background to scroll" setting is enabled). The .td-drag-scroll class is
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* set on #board-container by the script, so these rules are inert when disabled. A grab
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* "Drag the board background to scroll" setting is enabled). The .td-drag-scroll marker is
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* set on <body> by the script (not on #board-container, which Kanboard replaces on every
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* card move), so these rules are inert when disabled and survive board rebuilds. A grab
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* cursor advertises the empty background; cards keep the normal cursor since pressing them
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* does a card drag, not a pan.
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*/
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#board-container.td-drag-scroll {
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body.td-drag-scroll #board-container {
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cursor: grab;
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}
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#board-container.td-drag-scroll .task-board {
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body.td-drag-scroll #board-container .task-board {
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cursor: default;
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}
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167
Asset/js/drag-autoscroll.js
Normal file
167
Asset/js/drag-autoscroll.js
Normal file
@@ -0,0 +1,167 @@
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/*
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* TweakDrag -- auto-scroll the board while dragging a card near a screen edge.
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*
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* Kanboard drags cards with jQuery UI sortable. The board does not scroll during a drag
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* (jQuery UI's autoscroll is unreliable, and on touch the bundled Touch Punch shim
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* suppresses native scrolling while a card is held), so you can only drop where already on
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* screen. While a card drag is active and the pointer nears an edge, this scrolls toward it
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* with a smooth continuous speed that grows toward the edge:
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*
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* - Horizontal: scrolls #board-container (near its left/right edge).
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* - Vertical: scrolls the window/page (near the viewport top/bottom). This matters when
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* the vertical-collapse view is OFF and the whole page scrolls; when collapse is ON the
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* page is not scrollable so window scrolling no-ops and the per-column scroll stays
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* native.
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*
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* The edge zone is a percentage of each axis (clamped), so it adapts to screen size and
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* orientation: a narrow phone width gets a small horizontal zone, a tall phone height a
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* larger vertical one, a wide desktop the reverse -- with no device detection.
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*
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* It only acts during an active card drag near an edge, so it is harmless when idle. Works
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* on desktop (mouse) and mobile (touch, via Touch Punch). No core changes.
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*/
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(function () {
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"use strict";
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var EDGE_ZONE_PCT = 0.15; // edge zone = 15% of the axis length...
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var EDGE_ZONE_MIN = 30; // ...clamped to at least 30px...
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var EDGE_ZONE_MAX = 160; // ...and at most 160px.
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var MAX_SPEED = 22; // px per animation frame at the very edge
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var EASE = 1; // 1 = linear ramp, 2 = gentle-then-fast
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var jq = window.jQuery;
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if (!jq) {
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return;
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}
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var dragging = false;
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var rafId = 0;
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var lastX = 0;
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var lastY = 0;
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function onMove(e) {
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if (e.touches && e.touches.length) {
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lastX = e.touches[0].clientX;
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lastY = e.touches[0].clientY;
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} else {
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lastX = e.clientX;
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lastY = e.clientY;
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}
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}
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// Edge zone for an axis of the given length (px), 15% clamped to [30, 160].
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function zoneFor(length) {
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var z = length * EDGE_ZONE_PCT;
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if (z < EDGE_ZONE_MIN) { z = EDGE_ZONE_MIN; }
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if (z > EDGE_ZONE_MAX) { z = EDGE_ZONE_MAX; }
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return z;
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}
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// Distance is px from the edge; 0 at the zone border up to MAX_SPEED at the edge.
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function speedFor(distance, zone) {
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var p = (zone - distance) / zone;
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if (p <= 0) {
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return 0;
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}
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if (p > 1) {
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p = 1;
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}
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if (EASE !== 1) {
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p = Math.pow(p, EASE);
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}
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return MAX_SPEED * p;
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}
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function step() {
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if (!dragging) {
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return;
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}
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var moved = false;
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// Horizontal: scroll the board container near its left/right edge.
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var c = document.getElementById("board-container");
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if (c) {
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var rect = c.getBoundingClientRect();
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var zoneH = zoneFor(rect.width);
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var hspeed = 0;
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var dLeft = lastX - rect.left;
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var dRight = rect.right - lastX;
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if (dLeft < zoneH) {
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hspeed = -speedFor(dLeft, zoneH);
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} else if (dRight < zoneH) {
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hspeed = speedFor(dRight, zoneH);
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}
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if (hspeed !== 0) {
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var beforeX = c.scrollLeft;
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c.scrollLeft = beforeX + hspeed;
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if (c.scrollLeft !== beforeX) {
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moved = true;
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}
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}
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}
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// Vertical: scroll the window near the viewport top/bottom (collapse-off case;
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// a natural no-op when the page is not scrollable).
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var zoneV = zoneFor(window.innerHeight);
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var vspeed = 0;
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var dTop = lastY;
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var dBottom = window.innerHeight - lastY;
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if (dTop < zoneV) {
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vspeed = -speedFor(dTop, zoneV);
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} else if (dBottom < zoneV) {
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vspeed = speedFor(dBottom, zoneV);
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}
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if (vspeed !== 0) {
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var beforeY = window.pageYOffset;
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window.scrollBy(0, vspeed);
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if (window.pageYOffset !== beforeY) {
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moved = true;
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}
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}
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// When the board/page actually moved, nudge jQuery UI to recompute drop positions
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// so the placeholder follows onto the newly revealed area (either axis).
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if (moved) {
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document.dispatchEvent(new MouseEvent("mousemove", {
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clientX: lastX,
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clientY: lastY,
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bubbles: true
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}));
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}
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rafId = window.requestAnimationFrame(step);
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}
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function startLoop() {
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if (!document.getElementById("board-container")) {
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return;
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}
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dragging = true;
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if (!rafId) {
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rafId = window.requestAnimationFrame(step);
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}
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}
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function stopLoop() {
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dragging = false;
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if (rafId) {
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window.cancelAnimationFrame(rafId);
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rafId = 0;
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}
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}
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// Track the pointer at all times (cheap; only used while dragging).
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document.addEventListener("mousemove", onMove, true);
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document.addEventListener("touchmove", onMove, true);
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document.addEventListener("pointermove", onMove, true);
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// A card drag started / stopped. jQuery UI sortable fires these (on touch too, via
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// Touch Punch); delegated on the document so board redraws need no rebinding.
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jq(document).on("sortstart", startLoop);
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jq(document).on("sortstop", stopLoop);
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})();
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@@ -6,6 +6,13 @@
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* pressing a task card, a drag handle, or any interactive control is ignored, so this
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* never interferes with Kanboard's own card and column drag-and-drop.
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*
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* Resilience note: after a card drag Kanboard rebuilds the board with
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* `$("#board-container").replaceWith(data)` (BoardDragAndDrop.refresh), destroying the
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* element. So we must NOT bind to #board-container directly: we listen on `document` and
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* re-resolve the container on each press, and the grab-cursor marker lives on <body>
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* (which is never replaced). Previously the mousedown listener and the cursor class were
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* on the container, so background dragging stopped working after every card move.
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*
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* Loaded only when the "Drag the board background to scroll" setting is enabled.
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*/
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(function () {
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@@ -21,34 +28,40 @@
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}
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function init() {
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var container = document.getElementById("board-container");
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if (!container || container.getAttribute("data-td-drag") === "1") {
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if (!document.getElementById("board-container") || document.body.getAttribute("data-td-drag") === "1") {
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return;
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}
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container.setAttribute("data-td-drag", "1");
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container.classList.add("td-drag-scroll");
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// Marker on <body> (stable) enables the grab cursor via CSS, surviving board rebuilds.
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document.body.setAttribute("data-td-drag", "1");
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document.body.classList.add("td-drag-scroll");
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var dragging = false;
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var container = null;
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var startX = 0;
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var startScrollLeft = 0;
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container.addEventListener("mousedown", function (e) {
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// Left button only, and only on empty board background.
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if (e.button !== 0 || isIgnored(e.target)) {
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document.addEventListener("mousedown", function (e) {
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if (e.button !== 0) {
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return;
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}
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// Re-resolve the current container and only act on its empty background.
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var c = document.getElementById("board-container");
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if (!c || !c.contains(e.target) || isIgnored(e.target)) {
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return;
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}
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container = c;
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dragging = true;
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startX = e.clientX;
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startScrollLeft = container.scrollLeft;
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container.classList.add("td-grabbing");
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startScrollLeft = c.scrollLeft;
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document.body.classList.add("td-grabbing");
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e.preventDefault();
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});
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document.addEventListener("mousemove", function (e) {
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if (!dragging) {
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if (!dragging || !container) {
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return;
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}
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container.scrollLeft = startScrollLeft - (e.clientX - startX);
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@@ -60,7 +73,8 @@
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return;
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}
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dragging = false;
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container.classList.remove("td-grabbing");
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container = null;
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document.body.classList.remove("td-grabbing");
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}
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document.addEventListener("mouseup", stop);
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@@ -25,6 +25,12 @@ class Plugin extends Base
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'template' => 'plugins/TweakDrag/Asset/js/drag-scroll.js',
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));
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}
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// Auto-scroll the board while dragging a card near a screen edge. Always loaded;
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// it only acts during an active card drag.
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$this->hook->on('template:layout:js', array(
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'template' => 'plugins/TweakDrag/Asset/js/drag-autoscroll.js',
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));
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}
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public function getPluginName()
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@@ -44,7 +50,7 @@ class Plugin extends Base
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public function getPluginVersion()
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{
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return '0.3.0';
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return '1.2.0';
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}
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public function getPluginHomepage()
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13
README.md
13
README.md
@@ -9,6 +9,10 @@ A Kanboard plugin that groups board dragging and spacing tweaks, configurable un
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apart and to touch.
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- **Mobile drag handle size** -- enlarge the card drag handle Kanboard shows on mobile so
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it is easy to grab with a finger.
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- **Drag auto-scroll** -- while dragging a card, the board scrolls when the pointer nears a
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screen edge, so you can reach a column or row that is off screen. Horizontal scrolls the
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board; vertical scrolls the page (when the vertical-collapse view is off). Works on
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desktop and mobile.
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These options were originally part of the ShrinkVertically plugin and moved here so that
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drag/touch behaviour can grow on its own (planned: mobile drag-to-move cards, and a drag
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@@ -30,6 +34,15 @@ movement threshold so ending a drag does not open the task) without bloating tha
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is hard to grab. FontAwesome icons are sized by `font-size`, so a single rule scales the
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handle from the `--td-handle-size` CSS variable. It is inert on desktop, where Kanboard
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keeps the handle hidden.
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- **Drag auto-scroll**: a script (`Asset/js/drag-autoscroll.js`) listens for jQuery UI
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sortable's `sortstart`/`sortstop` (which also fire on touch via Kanboard's bundled Touch
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Punch) and, while a card drag is active, scrolls toward whichever edge the pointer nears:
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the board (`#board-container`) horizontally, and the window/page vertically (for the
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collapse-off view; a no-op when the page does not scroll). Speed ramps up smoothly toward
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the edge. The edge zone is 15% of each axis, clamped to 30-160px, so it adapts to screen
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size and orientation. After each scroll step it dispatches a synthetic `mousemove` so
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jQuery UI moves the drop placeholder onto the newly revealed area. It only acts during an
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active drag, so it is idle otherwise.
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## Requirements
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Reference in New Issue
Block a user