canvas board vs stretched canvas

(R.menu.main, menu); return true;} Handle Menu Event @overridepublic boolean onoptionsitemselected (MenuItem item) {Drawview Drawview = (drawview) Findviewbyid ( R.ID.DRAWVIEW1), switch (Item.getitemid ()) {//sets the method to run for the menu subkey with ID menu_exit.Case R.id.menu1_sub1:drawview.paint.setstrokewidth (1); Break;case R.id.menu1_sub2:drawview.paint.setstrokewidth (5 ); Break;case r.id.menu1_sub3:drawview.paint.setstrokewidth (Break;case); R.ID.MENU1_SUB4: DrawView.paint.setStro

minus Getboundingclientrect method returns the left, top value.Here is the implementation code:Just such a simple mouse painting function is completed, the shortcomings are also, for example, can not draw a point ... I personally think that using canvas to do drawing or relatively weak, some of the complex features are not very good to achieve, but you can also try to, for example, to add a method to save the picture, define Draw.prototype.save = fun

) { 36 that.drawing(event); 37 }; 38 document.onmouseup = this.drawEnd; 39 }, 40 drawing: function(e) { 41 varstage_info = this.canvas.getBoundingClientRect(); 42 this.context.lineTo( 43 e.clientX - stage_info.left,

"Spectrum.js" The value assignment is in JSON mode, using "Jquery.json-2.4.js" When using JSON assignment, because I have a JS wrapper class for graphics, and with their own definition of the method, so at the time of assignment there will be a problem of the definition of their own method, the original because of parsing JSON, the object will be parsed as object instead of my definition of objects, so it is necessary to deal with the human All code +html A total of 600 lines, which in

HTML5 Canvas: initial Canvas, html5 initial canvas Canvas and HTML 5 can be used to do many things, such as drawing, animation, and game development. Canvas Element Canvas. In addition to common attributes, the

Before using canvas to paint, are directly in the canvas label directly written on the width of the high, no problem, but also did not explore why the width of the canvas directly in the label, because the various data examples are so written. Today, Mr Wang raises a question: If you write the width and height in 1. Width: 400, High: 300, direct write in 2, delet

Canvas learning diary 1: canvas learning Diary As a result of my work, canvas is one of the most powerful elements of html5. Using it can do some wonderful things in the browser. You have heard more or less about the powerful use of canvas. I will not go into details here. The powerful function of

, Canvas.height/2 + the); Ctx.stroketext ("Hello Canvas Stroke", Canvas.width/2-200, Canvas.height/2 + the); Script> Body>HTML>The result we expect is this:and the actual results of the implementation:from the execution results, it's really a magnified Hello , what is this for? In fact, I think I can understand it this way, it is a projection cloth, because the real drawing is not on it, but on a drawing boar