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This article mainly explains "how Weixin Mini Programs (Mini) draw the description in the drawing context into canvas." Interested friends may wish to have a look. The method introduced in this paper is simple, fast and practical. Let's let Xiaobian take you to learn how to draw the description in the drawing context into canvas by Weixin Mini Programs (Mini).

canvasContext.draw Definition

Draws the description (path, deformation, style) previously in the drawing context to canvas.

Tip: The drawing context needs to be created by wx.createCanvasContext(canvasId).

Parameter Parameter Type Description reserveBoolean Not required. If the reserve parameter is false, the native layer should clear the canvas before calling drawCanvas to draw. If the reserve parameter is true, the content on the current canvas will be retained. The content drawn by drawCanvas will be overwritten on it. Default false Example const ctx = wx.createCanvasContext ('myCanvas')ctx.setFillStyle('red')ctx.fillRect (10, 10, 150, 100)ctx.draw()ctx.fillRect (50, 50, 150, 100)ctx.draw() Example const ctx = wx.createCanvasContext ('myCanvas')ctx.setFillStyle('red')ctx.fillRect (10, 10, 150, 100)ctx.draw()ctx.fillRect(50, 50, 150, 100)ctx.draw(true) At this point, I believe everyone has a deeper understanding of "how Weixin Mini Programs (Mini) draw descriptions in the context of drawings into canvas." Let's do some actual operation! Here is the website, more related content can enter the relevant channels for inquiry, pay attention to us, continue to learn!

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