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Graphite/frontend/src/components/window/Panel.svelte

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Svelte

<script lang="ts">
import { getContext, onDestroy, tick } from "svelte";
import LayoutCol from "/src/components/layout/LayoutCol.svelte";
import LayoutRow from "/src/components/layout/LayoutRow.svelte";
import Data from "/src/components/panels/Data.svelte";
import Document from "/src/components/panels/Document.svelte";
import Layers from "/src/components/panels/Layers.svelte";
import Properties from "/src/components/panels/Properties.svelte";
import Welcome from "/src/components/panels/Welcome.svelte";
import IconButton from "/src/components/widgets/buttons/IconButton.svelte";
import TextLabel from "/src/components/widgets/labels/TextLabel.svelte";
import { panelDrag, startCrossPanelDrag, endCrossPanelDrag, updateCrossPanelHover, updateDockingHover } from "/src/stores/panel-drag";
import type { DockingEdge } from "/src/stores/panel-drag";
import type { DockingSplitDirection, EditorWrapper, PanelType } from "/wrapper/pkg/graphite_wasm_wrapper";
const PANEL_COMPONENTS = {
Welcome,
Document,
Layers,
Properties,
Data,
};
const BUTTON_LEFT = 0;
const BUTTON_MIDDLE = 1;
const BUTTON_RIGHT = 2;
const DRAG_ACTIVATION_DISTANCE = 5;
const editor = getContext<EditorWrapper>("editor");
export let tabMinWidths = false;
export let tabCloseButtons = false;
export let tabLabels: { name: string; unsaved?: boolean; tooltipLabel?: string; tooltipDescription?: string; tooltipShortcut?: string }[];
export let tabActiveIndex: number;
export let panelTypes: PanelType[];
export let panelId: string;
export let clickAction: ((index: number) => void) | undefined = undefined;
export let closeAction: ((index: number) => void) | undefined = undefined;
export let reorderAction: ((oldIndex: number, newIndex: number) => void) | undefined = undefined;
export let renameAction: ((index: number, newName: string) => void) | undefined = undefined;
export let emptySpaceAction: (() => void) | undefined = undefined;
export let crossPanelDropAction: ((sourcePanelId: string, targetPanelId: string, insertIndex: number) => void) | undefined = undefined;
export let groupDropAction: ((sourcePanelId: string, targetPanelId: string, insertIndex: number) => void) | undefined = undefined;
export let splitDropAction: ((targetPanelId: string, direction: DockingSplitDirection, tabs: PanelType[], activeTabIndex: number) => void) | undefined = undefined;
let className = "";
export { className as class };
export let classes: Record<string, boolean> = {};
let styleName = "";
export { styleName as style };
export let styles: Record<string, string | number | undefined> = {};
let tabElements: (LayoutRow | undefined)[] = [];
// Document tab rename state
let editingNameTabIndex: number | undefined = undefined;
let editingNameText = "";
let editingNameInputElement: HTMLInputElement | undefined = undefined;
async function setEditingTabName(tabIndex: number, currentName: string) {
editingNameText = currentName;
editingNameTabIndex = tabIndex;
await tick();
editingNameInputElement?.focus();
editingNameInputElement?.select();
}
function commitEditingTabName(event: Event) {
if (editingNameTabIndex === undefined || !(event.target instanceof HTMLInputElement)) return;
renameAction?.(editingNameTabIndex, event.target.value);
editingNameTabIndex = undefined;
}
// Tab drag-and-drop state
let dragStartState: { tabIndex: number; pointerX: number; pointerY: number; isGroupDrag: boolean } | undefined = undefined;
let dragging = false;
let insertionIndex: number | undefined = undefined;
let insertionMarkerLeft: number | undefined = undefined;
let lastPointerX = 0;
let tabGroupElement: LayoutRow | undefined = undefined;
onDestroy(() => {
endDrag();
});
function onEmptySpaceAction(e: MouseEvent) {
if (e.target !== e.currentTarget) return;
if (e.button === BUTTON_MIDDLE || (e.button === BUTTON_LEFT && e.detail === 2)) emptySpaceAction?.();
}
function tabBarPointerDown(e: PointerEvent) {
// Only start a group drag from the tab bar background (not from a tab or button)
if (e.button !== BUTTON_LEFT) return;
if (e.target !== e.currentTarget) return;
if (!crossPanelDropAction && !splitDropAction) return;
dragStartState = { tabIndex: tabActiveIndex, pointerX: e.clientX, pointerY: e.clientY, isGroupDrag: true };
dragging = false;
insertionIndex = undefined;
insertionMarkerLeft = undefined;
addDragListeners();
}
export async function scrollTabIntoView(newIndex: number) {
await tick();
tabElements[newIndex]?.div?.()?.scrollIntoView();
}
// Tab drag-and-drop handlers
function tabPointerDown(e: PointerEvent, tabIndex: number) {
if (e.button !== BUTTON_LEFT) return;
if (e.target instanceof Element && e.target.closest("[data-close-button]")) return;
// Activate the tab upon pointer down
clickAction?.(tabIndex);
// Allow within-panel reorder if there are multiple tabs, or cross-panel drag if this panel supports docking
const canReorder = reorderAction && tabLabels.length > 1;
const canCrossPanelDrag = crossPanelDropAction !== undefined;
if (!canReorder && !canCrossPanelDrag) return;
dragStartState = { tabIndex, pointerX: e.clientX, pointerY: e.clientY, isGroupDrag: false };
dragging = false;
insertionIndex = undefined;
insertionMarkerLeft = undefined;
addDragListeners();
}
function dragPointerMove(e: PointerEvent) {
if (!dragStartState) return;
// Activate drag after moving beyond threshold
if (!dragging) {
const deltaX = Math.abs(e.clientX - dragStartState.pointerX);
const deltaY = Math.abs(e.clientY - dragStartState.pointerY);
if (deltaX < DRAG_ACTIVATION_DISTANCE && deltaY < DRAG_ACTIVATION_DISTANCE) return;
dragging = true;
// Group drags enter cross-panel state for edge docking even without crossPanelDropAction
if (dragStartState.isGroupDrag && (crossPanelDropAction || splitDropAction)) {
startCrossPanelDrag(panelId, [...panelTypes], tabActiveIndex, true);
} else if (!dragStartState.isGroupDrag && crossPanelDropAction) {
const draggedTab = panelTypes[dragStartState.tabIndex];
startCrossPanelDrag(panelId, [draggedTab], dragStartState.tabIndex, false);
}
}
lastPointerX = e.clientX;
// Exit early in here after we show the insertion marker, if we're within our own tab bar
if (pointerIsInsideTabBar(e)) {
calculateInsertionIndex(lastPointerX);
updateCrossPanelHover(undefined, undefined, undefined);
return;
}
// Clear local insertion marker since we're outside our own tab bar
insertionIndex = undefined;
insertionMarkerLeft = undefined;
// Skip cross-panel hover detection for sources that can't dock anywhere
if (!crossPanelDropAction && !splitDropAction) return;
if (crossPanelDropAction) {
const tabBarTarget = Array.from(document.querySelectorAll("[data-panel-tab-bar]")).find((element) => {
const targetPanelId = element.getAttribute("data-panel-tab-bar");
if (!targetPanelId || targetPanelId === panelId) return false;
const rect = element.getBoundingClientRect();
return e.clientX >= rect.left && e.clientX <= rect.right && e.clientY >= rect.top && e.clientY <= rect.bottom;
});
const tabBarTargetId = tabBarTarget?.getAttribute("data-panel-tab-bar");
if (tabBarTarget instanceof HTMLDivElement && tabBarTargetId) {
calculateForeignInsertionIndex(e.clientX, tabBarTargetId, tabBarTarget);
return;
}
}
// Check for edge-zone split docking
const panelBody = Array.from(document.querySelectorAll("[data-panel-body]")).find((element) => {
const rect = element.getBoundingClientRect();
return e.clientX >= rect.left && e.clientX <= rect.right && e.clientY >= rect.top && e.clientY <= rect.bottom;
});
const bodyPanelId = panelBody && panelBody.getAttribute("data-panel-body");
if (bodyPanelId) {
const rect = panelBody.getBoundingClientRect();
let edge: DockingEdge | undefined = detectDockingEdge(e.clientX, e.clientY, rect);
// Center drops between different panels require both to be cross-panel-dockable (self-drops are always allowed as a no-op)
if (edge === "Center" && bodyPanelId !== panelId) {
const targetIsDockable = panelBody.hasAttribute("data-panel-dockable");
const sourceIsDockable = crossPanelDropAction !== undefined;
if (!sourceIsDockable || !targetIsDockable) edge = undefined;
}
if (edge) {
updateDockingHover(bodyPanelId, edge);
return;
}
}
// Not hovering any drop target
updateCrossPanelHover(undefined, undefined, undefined);
updateDockingHover(undefined, undefined);
}
function dragPointerUp() {
if (dragging && dragStartState) {
const crossPanelState = $panelDrag;
// Center drop: append tabs to the target panel group
if (crossPanelState.active && crossPanelState.hoverDockingPanelId && crossPanelState.hoverDockingEdge === "Center") {
const dropAction = crossPanelState.draggingGroup ? groupDropAction : crossPanelDropAction;
dropAction?.(panelId, crossPanelState.hoverDockingPanelId, Number.MAX_SAFE_INTEGER);
}
// Edge docking drop: create a new split adjacent to the target panel
else if (crossPanelState.active && crossPanelState.hoverDockingPanelId && crossPanelState.hoverDockingEdge && crossPanelState.hoverDockingEdge !== "Center") {
splitDropAction?.(
crossPanelState.hoverDockingPanelId,
crossPanelState.hoverDockingEdge,
crossPanelState.draggedTabs,
crossPanelState.draggingGroup ? crossPanelState.sourceTabIndex : 0,
);
}
// Cross-panel tab bar drop: insert as a tab in the target panel group
else if (
crossPanelDropAction &&
crossPanelState.active &&
crossPanelState.hoverTargetPanelId &&
crossPanelState.hoverTargetPanelId !== panelId &&
crossPanelState.hoverInsertionIndex !== undefined
) {
const dropAction = crossPanelState.draggingGroup ? groupDropAction : crossPanelDropAction;
dropAction?.(panelId, crossPanelState.hoverTargetPanelId, crossPanelState.hoverInsertionIndex);
}
// Within-panel reorder
else if (insertionIndex !== undefined) {
const oldIndex = dragStartState.tabIndex;
// Adjust for the fact that removing the dragged tab shifts indices
let newIndex = insertionIndex;
if (newIndex > oldIndex) newIndex -= 1;
if (oldIndex !== newIndex) {
reorderAction?.(oldIndex, newIndex);
}
}
}
endDrag();
}
function dragAbort(e: MouseEvent | KeyboardEvent) {
if (e instanceof MouseEvent && e.button === BUTTON_RIGHT) endDrag();
if (e instanceof KeyboardEvent && e.key === "Escape") endDrag();
}
function dragScroll() {
if (dragging && insertionIndex !== undefined) {
calculateInsertionIndex(lastPointerX);
}
}
function endDrag() {
dragStartState = undefined;
dragging = false;
insertionIndex = undefined;
insertionMarkerLeft = undefined;
endCrossPanelDrag();
removeDragListeners();
}
function pointerIsInsideTabBar(e: PointerEvent): boolean {
const groupDiv = tabGroupElement?.div?.();
if (!groupDiv) return false;
const rect = groupDiv.getBoundingClientRect();
return e.clientX >= rect.left && e.clientX <= rect.right && e.clientY >= rect.top && e.clientY <= rect.bottom;
}
/// Detect which zone the pointer is in: the nearest edge (by diagonal quadrant) if within the 25% border, or center if interior.
function detectDockingEdge(clientX: number, clientY: number, rect: DOMRect): DockingEdge {
const distLeft = clientX - rect.left;
const distRight = rect.right - clientX;
const distTop = clientY - rect.top;
const distBottom = rect.bottom - clientY;
const minDist = Math.min(distLeft, distRight, distTop, distBottom);
// If the nearest edge is beyond the 25% threshold, it's the center zone
const THRESHOLD = 0.25;
const edgeThresholdX = rect.width * THRESHOLD;
const edgeThresholdY = rect.height * THRESHOLD;
if (distLeft > edgeThresholdX && distRight > edgeThresholdX && distTop > edgeThresholdY && distBottom > edgeThresholdY) return "Center";
// Return whichever edge is closest (diagonal dividing lines between quadrants)
if (minDist === distLeft) return "Left";
if (minDist === distRight) return "Right";
if (minDist === distTop) return "Top";
return "Bottom";
}
// Calculate the insertion position for a foreign panel's tab bar
function calculateForeignInsertionIndex(pointerX: number, targetPanelId: string, tabBarDiv: HTMLDivElement) {
const tabBarRect = tabBarDiv.getBoundingClientRect();
const tabs = tabBarDiv.querySelectorAll(":scope > [data-tab]");
let bestIndex = 0;
let bestMarkerLeft = 0;
for (let i = 0; i < tabs.length; i++) {
const tabRect = tabs[i].getBoundingClientRect();
const tabCenter = tabRect.left + tabRect.width / 2;
if (pointerX > tabCenter) {
bestIndex = i + 1;
bestMarkerLeft = tabRect.right - tabBarRect.left;
} else {
bestMarkerLeft = tabRect.left - tabBarRect.left;
break;
}
}
// Must be at least 2px from the left so its left half doesn't get cut off along the left of the tab bar
updateCrossPanelHover(targetPanelId, bestIndex, Math.max(2, bestMarkerLeft));
}
function calculateInsertionIndex(pointerX: number) {
const groupDiv = tabGroupElement?.div?.();
if (!dragStartState || !groupDiv) return;
const groupRect = groupDiv.getBoundingClientRect();
let bestIndex = 0;
let bestMarkerLeft = 0;
// Walk through each tab to find the insertion point closest to the pointer
for (let i = 0; i < tabLabels.length; i++) {
const tabDiv = tabElements[i]?.div?.();
if (!tabDiv) continue;
const tabRect = tabDiv.getBoundingClientRect();
const tabMidpoint = tabRect.left + tabRect.width / 2;
if (pointerX > tabMidpoint) {
bestIndex = i + 1;
bestMarkerLeft = tabRect.right - groupRect.left;
} else {
bestIndex = i;
bestMarkerLeft = tabRect.left - groupRect.left;
break;
}
}
insertionIndex = bestIndex;
insertionMarkerLeft = Math.max(2, bestMarkerLeft);
}
function addDragListeners() {
document.addEventListener("pointermove", dragPointerMove);
document.addEventListener("pointerup", dragPointerUp);
document.addEventListener("mousedown", dragAbort);
document.addEventListener("keydown", dragAbort);
tabGroupElement?.div?.()?.addEventListener("scroll", dragScroll);
}
function removeDragListeners() {
document.removeEventListener("pointermove", dragPointerMove);
document.removeEventListener("pointerup", dragPointerUp);
document.removeEventListener("mousedown", dragAbort);
document.removeEventListener("keydown", dragAbort);
tabGroupElement?.div?.()?.removeEventListener("scroll", dragScroll);
}
</script>
<LayoutCol
on:pointerdown={() => panelTypes[tabActiveIndex] && editor.setActivePanel(panelTypes[tabActiveIndex])}
class={`panel ${className}`.trim()}
{classes}
style={styleName}
{styles}
data-panel-body={panelId}
data-panel-dockable={crossPanelDropAction ? "" : undefined}
>
<LayoutRow class="tab-bar" classes={{ "min-widths": tabMinWidths }}>
<LayoutRow
class="tab-group"
scrollableX={true}
data-panel-tab-bar={crossPanelDropAction ? panelId : undefined}
on:pointerdown={tabBarPointerDown}
on:click={onEmptySpaceAction}
on:auxclick={onEmptySpaceAction}
bind:this={tabGroupElement}
>
{#each tabLabels as tabLabel, tabIndex}
<LayoutRow
class="tab"
classes={{ active: tabIndex === tabActiveIndex }}
data-tab
tooltipLabel={tabLabel.tooltipLabel}
tooltipDescription={tabLabel.tooltipDescription}
on:pointerdown={(e) => tabPointerDown(e, tabIndex)}
on:click={(e) => e.stopPropagation()}
on:auxclick={(e) => {
// Middle mouse button click
if (e.button === BUTTON_MIDDLE) {
e.stopPropagation();
closeAction?.(tabIndex);
}
}}
bind:this={tabElements[tabIndex]}
>
<LayoutRow class="name">
{#if editingNameTabIndex !== tabIndex}
<TextLabel class="text" on:dblclick={() => renameAction && setEditingTabName(tabIndex, tabLabel.name)}>{tabLabel.name}</TextLabel>
{:else}
<input
type="text"
bind:this={editingNameInputElement}
bind:value={editingNameText}
on:pointerdown|stopPropagation
on:dblclick|stopPropagation
on:blur={commitEditingTabName}
on:keydown={(e) => {
// Stop propagation when we handle the key ourselves so the global keyboard forwarder doesn't dispatch them and trigger unrelated bindings
if (e.key === "Enter") {
commitEditingTabName(e);
e.stopPropagation();
} else if (e.key === "Escape") {
editingNameTabIndex = undefined;
e.stopPropagation();
}
}}
/>
{/if}
{#if tabLabel.unsaved}
<TextLabel classes={{ hidden: editingNameTabIndex === tabIndex }}>*</TextLabel>
{/if}
</LayoutRow>
{#if tabCloseButtons}
<IconButton
action={(e) => {
e?.stopPropagation();
closeAction?.(tabIndex);
}}
icon="CloseX"
size={16}
data-close-button
/>
{/if}
</LayoutRow>
{/each}
</LayoutRow>
{#if dragging && insertionMarkerLeft !== undefined}
<div class="tab-insertion-mark" style:left={`${insertionMarkerLeft}px`}></div>
{/if}
{#if !dragging && crossPanelDropAction && $panelDrag.active && $panelDrag.hoverTargetPanelId === panelId && $panelDrag.hoverInsertionMarkerLeft !== undefined}
<div class="tab-insertion-mark" style:left={`${$panelDrag.hoverInsertionMarkerLeft}px`}></div>
{/if}
</LayoutRow>
<LayoutCol class="panel-body">
{#if panelTypes[tabActiveIndex]}
<svelte:component this={PANEL_COMPONENTS[panelTypes[tabActiveIndex]]} />
{/if}
</LayoutCol>
{#if $panelDrag.active && $panelDrag.hoverDockingPanelId === panelId && $panelDrag.hoverDockingEdge}
<div
class="docking-ghost"
class:left={$panelDrag.hoverDockingEdge === "Left"}
class:right={$panelDrag.hoverDockingEdge === "Right"}
class:top={$panelDrag.hoverDockingEdge === "Top"}
class:bottom={$panelDrag.hoverDockingEdge === "Bottom"}
class:center={$panelDrag.hoverDockingEdge === "Center"}
></div>
{/if}
</LayoutCol>
<style lang="scss">
.panel {
background: var(--color-1-nearblack);
border-radius: 6px;
overflow: hidden;
position: relative;
.tab-bar {
position: relative;
height: 28px;
min-height: auto;
background: var(--color-1-nearblack); // Needed for the viewport hole punch on desktop
flex-shrink: 0;
&.min-widths .tab-group .tab {
min-width: 120px;
max-width: 360px;
}
.tab-group {
flex: 1 1 100%;
position: relative;
// This always hangs out at the end of the last tab, providing 16px (15px plus the 1px reserved for the separator line) to the right of the tabs.
// When the last tab is selected, its bottom rounded fillet adds 16px to the width, which stretches the scrollbar width allocation in only that situation.
// This pseudo-element ensures we always reserve that space to prevent the scrollbar from jumping when the last tab is selected.
// There is unfortunately no apparent way to remove that 16px gap from the end of the scroll container, since negative margin does not reduce the scrollbar allocation.
&::after {
content: "";
width: 15px;
flex: 0 0 auto;
}
.tab {
flex: 0 1 auto;
height: 28px;
padding: 0 8px;
align-items: center;
position: relative;
&.active {
background: var(--color-3-darkgray);
border-radius: 6px 6px 0 0;
position: relative;
&:not(:first-child)::before,
&::after {
content: "";
width: 16px;
height: 8px;
position: absolute;
bottom: 0;
}
&:not(:first-child)::before {
left: -16px;
border-bottom-right-radius: 8px;
box-shadow: 8px 0 0 0 var(--color-3-darkgray);
}
&::after {
right: -16px;
border-bottom-left-radius: 8px;
box-shadow: -8px 0 0 0 var(--color-3-darkgray);
}
}
.name {
flex: 1 1 100%;
.text-label {
// Height and line-height required because https://stackoverflow.com/a/21611191/775283
height: 28px;
line-height: 28px;
flex: 0 0 auto;
&.text {
overflow-x: hidden;
white-space: pre;
text-overflow: ellipsis;
flex-shrink: 1;
}
}
input {
color: inherit;
border: none;
outline: none;
margin: 0 -4px;
padding: 0 4px;
height: 20px;
border-radius: 2px;
background: var(--color-1-nearblack);
field-sizing: content;
align-self: center;
// Stack above the absolutely-positioned close button so it doesn't intercept clicks at the input's right edge.
position: relative;
z-index: 1;
}
.text-label.hidden {
visibility: hidden;
}
}
.icon-button {
margin-left: 8px;
}
& + .tab {
margin-left: 1px;
}
&:not(.active) + .tab:not(.active)::before {
content: "";
position: absolute;
left: -1px;
width: 1px;
height: 16px;
background: var(--color-5-dullgray);
}
&:last-of-type {
margin-right: 1px;
&:not(.active)::after {
content: "";
position: absolute;
right: -1px;
width: 1px;
height: 16px;
background: var(--color-5-dullgray);
}
}
}
}
&:has(.tab-insertion-mark) .tab .icon-button {
pointer-events: none;
}
.tab-insertion-mark {
position: absolute;
top: 4px;
bottom: 4px;
width: 3px;
margin-left: -2px;
z-index: 1;
background: var(--color-e-nearwhite);
pointer-events: none;
}
}
.panel-body {
background: var(--color-3-darkgray);
flex: 1 1 100%;
flex-direction: column;
> div {
padding-bottom: 4px;
}
}
&:has(.docking-ghost) .tab-bar,
&:has(.docking-ghost) .panel-body {
pointer-events: none;
}
.docking-ghost {
position: absolute;
background: rgb(from var(--color-f-white) r g b / 0.2);
border-radius: 6px;
pointer-events: none;
z-index: 1;
transition:
top 0.2s ease,
left 0.2s ease,
width 0.2s ease,
height 0.2s ease;
&.left {
top: 0;
left: 0;
width: 50%;
height: 100%;
}
&.right {
top: 0;
left: 50%;
width: 50%;
height: 100%;
}
&.top {
top: 0;
left: 0;
width: 100%;
height: 50%;
}
&.bottom {
top: 50%;
left: 0;
width: 100%;
height: 50%;
}
&.center {
top: 6px;
left: 6px;
width: calc(100% - 12px);
height: calc(100% - 12px);
}
}
}
// Needed for the viewport hole punch on desktop
.viewport-hole-punch .panel.document-panel,
.viewport-hole-punch .panel.document-panel .panel-body:not(:has(.welcome-panel)) {
background: none;
}
</style>