Comments: This article describes in detail the text effects of HTML5 Canvas Fill and Stroke. The code for how to implement texture filling and Stroke, color filling and Stroke Based on Canvas is as follows, if you are interested, you can refer to the following: I hope to help demonstrate the HTML5 Canvas Fill and Stroke text effects, and how to implement texture filling and Stroke Based on Canvas.
I. Color filling and stroke
Color filling can be achieved through fillStyle, and stroke color can be achieved through strokeStyle. Simple Example
As follows:
The Code is as follows:
// Fill and stroke text
Ctx. font = '60pt Calibri ';
Ctx. lineWidth = 3;
Ctx. strokeStyle = 'green ';
Ctx. strokeText ('Hello World! ', 20,100 );
Ctx. fillStyle = 'red ';
Ctx. fillText ('Hello World! ', 20,100 );
2. Texture filling and stroke
HTML5 Canvas also supports texture filling. By loading a texture image and then creating the paint brush mode, the API for creating the texture mode is ctx. createPattern (imageTexture, "repeat"); the second parameter supports four values: "repeat-x", "repeat-y", "repeat ", "no-repeat" indicates that the texture is repeated or not repeated along the X axis, Y axis, and XY directions. The code for texture stroke and filling is as follows:
The Code is as follows:
Var woodfill = ctx. createPattern (imageTexture, "repeat ");
Ctx. strokeStyle = woodfill;
Ctx. strokeText ('Hello World! ', 20,200 );
// Fill rectangle
Ctx. fillStyle = woodfill;
Ctx. fillRect (60,240,260,440 );
Texture Image:
Iii. Running Effect
Code:
The Code is as follows:
<! DOCTYPE html>
<Html>
<Head>
<Meta http-equiv = "X-UA-Compatible" content = "chrome = IE8">
<Meta http-equiv = "Content-type" content = "text/html; charset = UTF-8">
<Title> Canvas Fill And Stroke Text Demo </title>
<Link href = "default.css" rel = "stylesheet"/>
<Script>
Var ctx = null; // global variable 2d context
Var imageTexture = null;
Window. onload = function (){
Var canvas = document. getElementById ("text_canvas ");
Console. log (canvas. parentNode. clientWidth );
Canvas. width = canvas. parentNode. clientWidth;
Canvas. height = canvas. parentNode. clientHeight;
If (! Canvas. getContext ){
Console. log ("Canvas not supported. Please install a HTML5 compatible browser .");
Return;
}
// Get 2D context of canvas and draw rectangel
Ctx = canvas. getContext ("2d ");
Ctx. fillStyle = "black ";
Ctx. fillRect (0, 0, canvas. width, canvas. height );
// Fill and stroke text
Ctx. font = '60pt Calibri ';
Ctx. lineWidth = 3;
Ctx. strokeStyle = 'green ';
Ctx. strokeText ('Hello World! ', 20,100 );
Ctx. fillStyle = 'red ';
Ctx. fillText ('Hello World! ', 20,100 );
// Fill and stroke by pattern
ImageTexture = document. createElement ('img ');
ImageTexture. src = "../pattern.png ";
ImageTexture. onload = loaded ();
}
Function loaded (){
// Delay to image loaded
SetTimeout (FIG, 1000/30 );
}
Function textureFill (){
// Var woodfill = ctx. createPattern (imageTexture, "repeat-x ");
// Var woodfill = ctx. createPattern (imageTexture, "repeat-y ");
// Var woodfill = ctx. createPattern (imageTexture, "no-repeat ");
Var woodfill = ctx. createPattern (imageTexture, "repeat ");
Ctx. strokeStyle = woodfill;
Ctx. strokeText ('Hello World! ', 20,200 );
// Fill rectangle
Ctx. fillStyle = woodfill;
Ctx. fillRect (60,240,260,440 );
}
</Script>
</Head>
<Body>
<H1> HTML5 Canvas Text Demo-By Gloomy Fish <Pre> Fill And Stroke </pre>
<Div id = "my_painter">
<Canvas id = "text_canvas"> </canvas>
</Div>
</Body>
</Html>
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