I'm working on a puzzle game using text to arrange, for the blocks themselves I create a children DisplayObject which contains a Texfield and I set the size of the texfield using a variable because each frame has a different font size, for example:
var sizeOfTF = 35;
var my_text_format: TextFormat = new TextFormat();
my_text_format.size = sizeOfTF ; // set size
puzzle.text.defaultTextFormat = my_text_format;
puzzle.text.setTextFormat(my_text_format);
puzzle.text.autoSize = TextFieldAutoSize.LEFT;
stage.addChild(DisplayObject(puzzle));
then I have a project with a stage size of 720x1280 and the text appears normally, when I change the stage to 390x 694 with content scale enabled, the children do not change and the text size remains the same as at 720x1280.
how to know the font-size difference if the stage changes?
or how to make children responsive adjust the size of the stage?
Previously I used scaleX and scaleY to set the font size but it only worked in one frame.
Related
I've seen in all canvas image creating documentation (https://developer.mozilla.org/en-US/docs/Web/API/Canvas_API/Tutorial/Using_images) that the new image constructor, e.g. myImg = new Image();, is used just like that with no parameters. However, I know that it takes optional parameters for width and height, e.g. myImg = new Image(400,300);.
Is it good practice to specify those parameters if you know the width and height of the image beforehand?
After the constructor I use myImg.src = 'myurl.jpg'; and myImg.onload = function() { ctx.drawImage(myImg, x, y)...};
If you're going to draw the new image to the canvas, then there's no need to specify the image size in the image's constructor. Javascript will know the image's native size after the image is fully loaded in myImg.onload.
When you draw the image on the canvas using context.drawImage, by default the image will be drawn at its native size. But you can also specify a different image size with extra arguments to drawImage:
// draw myImg on the canvas in the top-left corner
// and resize the image to half-size
context.drawImage(myImg, 0,0, myImg.width/2, myImg.height/2);
If you want the canvas to be the same size as your image, you must resize the canvas inside your myImg.onload which is the first time javascript knows the native size of the image:
// create the canvas element its context
var canvas=document.createElement('canvas');
var context=canvas.getContext('2d');
// create the image object
var img=new Image();
img.onload=start;
img.src="myImage.png";
function start(){
// The native image size is now known,
// so resize the canvas to the same size as the image
canvas.width=img.width;
canvas.height=img.height;
// draw the image on the canvas
context.drawImage(img,0,0);
}
I'm using Scene2d to build ui for my screen.
Stage stage = new Stage(new StretchViewport(Gdx.graphics.getWidth(), Gdx.graphics.getHeight()));
Skin skin = ResourceManager.getSkin("uiskin");
Label label = new Label("my text", skin);
When stage.draw() has called, the label appeared in left bottom corner of the screen. But I want to use the viewport with unit size.
float ratio = (float)Gdx.graphics.getWidth() / Gdx.graphics.getHeight();
Stage stage = new Stage(new StretchViewport(ratio, 1));
In this way I can define size of other actors in percents of screen height - 0.5 , 0,23 ect. And it works well for other Actors, ImageActors, but how I can properly change size of my label? Label draw in the same place, I think, but it is tremendous for the stage, be cause its size is in pixel 183 *10 ect. And
label.setBounds(.....);
isn't working.
You need to set the scale on the font. I'm not sure why it doesn't happen automatically, but the fix is to add a line like:
font.GetData().setScale(<viewport width>/Gdx.graphics.getWidth(), <viewport height>/Gdx.graphics.getHeight());
Basically I've got a bitmap which is an image that the user captures from a webcam which was previously stored as bitmapdata which I converted into a bitmap and added it onto the stage..
From here I want the bitmap to be selectable so I can do other things to it, so I realised I would need to add this into sprite in order to add event listeners onto it.
Having done so, for some reason my application ain't wanting to recognise the events added?
Here is the code I've got..
Bitmap..
//Create a new bitmap from the video capture
image = new Bitmap(bitmap,"auto",true);
//Set the width and height properties
image.width=150;
image.height=125;
//Set the stage position
image.x = 430;
image.y = 280;
stage.addChild(image);
Sprite..
var imageSprite:Sprite;
imageSprite = new Sprite();
imageSprite.x = 200;
imageSprite.y = 50;
imageSprite.addChild(image);
stage.addChild(imageSprite);
Event listener:
imageSprite.addEventListener(MouseEvent.MOUSE_DOWN, SelectWebImage1);
Function:
function SelectWebImage1(e:MouseEvent): void {
trace("Clicked");
}
I receive no errors from this but I noticed that when I have that code written in my application, all of the code underneath it doesn't seem to function?
I really don't know what i'm doing wrong, any help appreciated thanks!
When you set Sprite's dimensions, you implicitly set its scale, and also if you place some graphics by using width and height, the width and height includes any sprite's children, accounting for their position. You should place that bitmap into imageSprite and not set x,y proerties for the bitmap, this way you won't have to account for its position inside the sprite to position the bitmap.
I've read tons of posts about setting the size of a TextField to match the width of the string containing it. I'm looking for a way to do it the other way around. The TextField in my application should have a fixed with and I want to squeeze the text in it by changing the width of a single character.
The solution I'm working width now decreases the size of the font until it fits into the TextField, but I want to squeeze the text (so decreasing just width, not height) until it fits in the TextField. Any ideas how to achieve this?
I don't think it's possible to scale font on a single axis.
The only thing i could think of is to bake the text field and scale the resulting bitmap:
var tf:TextField = new TextField();
tf.text = "bitmap text";
var myBitmapData:BitmapData = new BitmapData(80, 20);
myBitmapData.draw(tf);
var bmp:Bitmap = new Bitmap(myBitmapData);
this.addChild(bmp);
Source
I'm trying to create a TextField which will look smooth enough when animated. The only option, when I can get smoothly-animated textfield, is setting antiAliasType property to AntiAliasType.NORMAL; But I'd like to play with text antialiasing to make letters a little bit thicker. So I change the antiAliasType to AntiAliasType.ADVANCED.
After that the textfield looks jumpy when animated (it looks like glyphs are being snapped to pixel-grid). Change of property gridFitType of the textField doesn't make any sense.
Has anyone achieved smooth text-field animation when antiAliasType is switched to AntiAliasType.ADVANCED? (The jumpy text occurs when switching to TLF text fields either)
Here is my short code:
var p:TextField = new TextField();
var font:Font = new Font1XXX();
// font is embedded int the library and exported as Font1XXX class
var tfor:TextFormat = new TextFormat();
tfor.font = font.fontName;
tfor.size = 15;
tfor.color = 0xFFFFFF;
p.defaultTextFormat = tfor;
p.autoSize = TextFieldAutoSize.LEFT;
p.antiAliasType = AntiAliasType.ADVANCED;
p.gridFitType = GridFitType.NONE;
// change to GridFitType.NONE does not make any sense;
p.selectable = false;
p.embedFonts = true;
p.text = "HELLO WORLD";
addChild(p);
If you don't need selectable text, draw the textfield into a bitmap and add the bitmap to the stage instead of the textfield.
Every text in flash is snapped to whole pixels, resulting in any animation in regards to them will feel "jagged".
Workarounds are to convert any "static text" into a shape and place inside movieclip or to "copy" the text into a bitmap and animate that bitmap. Depending on what type of animation you want to do, different solutions are required for best visual experience.
For instance, scrolling text, it would probably be best to cache it as bitmap and then move it along the axis.
Scaling up/down a text (if it is scaled a lot). This sucks, I haven't found a good way to resolve this without visual artifacts. Best solution is usually to copy the text into another clip, hide the text and then animate quickly or try to cover it with other effects so focus is taken away from the text itself.