CanvasRenderingContext2D.save() - Web APIs 编辑

The CanvasRenderingContext2D.save() method of the Canvas 2D API saves the entire state of the canvas by pushing the current state onto a stack.

The drawing state

The drawing state that gets saved onto a stack consists of:

• The current transformation matrix.
• The current clipping region.
• The current dash list.
• The current values of the following attributes: strokeStyle, fillStyle, globalAlpha, lineWidth, lineCap, lineJoin, miterLimit, lineDashOffset, shadowOffsetX, shadowOffsetY, shadowBlur, shadowColor, globalCompositeOperation, font, textAlign, textBaseline, direction, imageSmoothingEnabled.

Syntax

void ctx.save();

Examples

Saving the drawing state

This example uses the save() method to save the default state and restore() to restore it later, so that you are able to draw a rect with the default state later.

HTML

<canvas id="canvas"></canvas>

JavaScript

const canvas = document.getElementById('canvas');
const ctx = canvas.getContext('2d');

// Save the default state
ctx.save();

ctx.fillStyle = 'green';
ctx.fillRect(10, 10, 100, 100);

// Restore the default state
ctx.restore();

ctx.fillRect(150, 40, 100, 100);

Result

Specifications

Browser compatibility

BCD tables only load in the browser

See also

• The interface defining this method: CanvasRenderingContext2D
• CanvasRenderingContext2D.restore()