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The HTML <canvas> element is used to draw graphics on a web page. The graphic to the left is created with <canvas>. It shows four elements: a red rectangle, a gradient rectangle, a multicolor rectangle, and a multicolor text.
The examples below embeds canvas directly into the HTML code. HTML Canvas is supported in all major browsers.
The three most used methods for drawing rectangles in canvas are: The rect () method. The fillRect () method. The strokeRect () method. The rect () Method. The rect () method defines a rectangle. The rect () method has the following parameters: Example. Use rect () to define a 150*100 pixels rectangle, starting in position (10,10).
15 paź 2015 · In order to draw a border around your text, your context needs to know what font is currently set. After you establish that, you can call ctx.measureText(text) . This will compute the width of the text, and the height measurements can be determined with the bounding ascent and descent values.
17 maj 2023 · Let’s create an example where we transform an image on the canvas: <!DOCTYPE html> <html> <body> <canvas id="myCanvas"></canvas> <script> const canvas = document.getElementById('myCanvas'); const context = canvas.getContext('2d'); const image = new Image(); image.src = 'image.jpg'; image.onload = function() { context.translate(canvas.width ...
30 lis 2023 · The HTML Canvas Rectangles facilitate the rect () method to draw rectangles on canvas. There are various attributes in the rect (x, y, width, height) method such as x and y defining the coordinates of the upper-left corner of the rectangle, width defining the width of the rectangle, and height defining the height of the rectangle.
25 mar 2019 · drawImage(image,dx,dy): Copies the image-source into the canvas at (dx,dy). The whole image is copied. drawImage(image,dx,dy,dw,dh): Copies the image-source into the rectangle in the canvas...
