To make my question clearer , I created a simple test class as below.
`public void create () {
stage = new Stage();
// GP
Texture texture1 = new Texture(Gdx.files.internal("data/badlogic.jpg"));
TextureRegion tr = new TextureRegion(texture1);
Image image = new Image(tr);
Group gp = new Group();
ImageButton ib = new ImageButton(new Image(tr).getDrawable());
ib.setSize(90, 256);
gp.addActor(ib);
gp.setPosition(0, 0);
stage.addActor(gp);
gp.debugAll();
}`
The size of badlogic logo is 256*256. I set it to 90*256 in the test.But the outcome looks like this http://imgsrc.baidu.com/forum/w%3D580/sign=fb0e4402d21373f0f53f6f97940e4b8b/0958c32397dda1448779b0cbb1b7d0a20df486e2.jpg
If i set the image size before sending it to imagebutton, then it will rendered as 256*256 ,the full original size. This function is so simple. I can not figure out where is going wrong.
First of all, last update of Libgdx project is 1.4.1: http://libgdx.badlogicgames.com/download.html
The problem is the Drawable object that you are sending to the ImageButton, if you want to change the size of the Image or Texture before adding it to the ImageButton (so you will solve the problem asked), you will just need to use the .setBounds() method
I write down a little example:
1. Initialize Image object with your image file:
`Image image = new Image( new Texture ( Gdx.Files.internal("yourPathFile.png") ) );`
2. .setBounds() javadoc: (x coordinate, y coordinate, width of the image, height of the image)
image.setBounds(0f, 0f, 50f, 60f)
then you can send the image to the ImageButton object as Drawable.
`ImageButton myButton = new ImageButton(image.getDrawable());'
That's all.
Here you have some constructors of ImageButton object from the Libgdx official javadoc.
See also:
Release versions: http://libgdx.badlogicgames.com/releases/
ImageButton javadoc: http://libgdx.badlogicgames.com/nightlies/docs/api/com/badlogic/gdx/scenes/scene2d/ui/ImageButton.html
Related
I am using libgdx + scene2d + box2d. Everything looked ok until I decided to replaced my TextButtons to ImageButton.
I can't get my ImageButton rezided, it always follows the image dimensions.
Here is my Stage:
stage = new Stage(new StretchViewport(camera.viewportWidth,camera.viewportHeight));
This how a create my Button:
ImageButtonStyle style = new ImageButtonStyle();
style.imageUp = new TextureRegionDrawable(textureButtonPlay);
ImageButton buttonPlay = new ImageButton(style);
buttonPlay.setSize(50, 20); //this does not work
This how a create my Window and add my Button to it:
WindowStyle windowStyle = new WindowStyle(new BitmapFont(), Color.WHITE, null);
windowTryAgain = new Window("", windowStyle);
windowTryAgain.setMovable(false);
//windowTryAgain.padTop(20);
windowTryAgain.setSize(150,150);
windowTryAgain.setPosition(camera.viewportWidth/2 - windowTryAgain.getWidth()/2,
camera.viewportHeight/2 - windowTryAgain.getHeight()/2);
windowTryAgain.row().fill().expandX();
windowTryAgain.add(buttonPlay).padTop(25).expandX().fillX();
windowTryAgain.center();
Is it possible to resize the Texture or TextureRegion? What would be the best approach?
My has issue has been resolved with following piece of code:
windowTryAgain.add(buttonMenu).width(100).height(100);
Then the image will resized accordiantly to the cell width and height.
Credits:
scene2d button scaling with libgdx
I need the ability to be able to create an image of size 400x400 on the fly in a Windows Phone app, which will have a color of ARGB values that a user selects from a color picker. For instance, the user will click on a HyperlinkButton to take them to a ColorPickerPage and then will select a color, and I will retrieve that value and create the image from it, and display this image back on the MainPage. How might something like this be accomplished one I have retrieved the ARGB value from the user? I have not had luck finding any resources on this particular issue.
EDIT**
I came across http://www.geekchamp.com/forums/windows-phone-development/how-to-correctly-save-uicontrol-with-opacity-to-writeablebitmap which creates a rectangle on the screen and then saves to WriteableBitmap, but how might I skip that step and just save the Rectangle to WriteableBitmap? Note, I only have a single rectangle that I Fill with a custom Color.
You can save any UI element as an image using the code below. Here rect is the name of the rectangle in your XAML. If the rectangle isn't present in the UI then simply create one using C#. I have added the code to create a rectangle using C# and commented it.
public void saveimage(int height, int width, String filename)
{
//Rectangle rect = new Rectangle();
//rect.Height = 40;
//rect.Width = 40;
//rect.Fill = new SolidColorBrush(System.Windows.Media.Colors.Cyan);
var bmp = new WriteableBitmap(width, height);
bmp.Render(rect, null);
bmp.Invalidate();
var isf = IsolatedStorageFile.GetUserStoreForApplication();
if (!isf.FileExists(filename))
{
using (var stream = isf.OpenFile(filename, System.IO.FileMode.OpenOrCreate, System.IO.FileAccess.ReadWrite))
{
bmp.SaveJpeg(stream, width, height, 0, 100);
stream.Close();
}
}
}
Did you try using the Drawing Class.
here's the reference from msdn.
These are some samples: System.Drawing and System.Drawing.Imaging alternatives for Windows Phone
http://code.msdn.microsoft.com/windowsapps/Multi-Touch-Drawing-744a0b48
Hope it helps!
I am using libGDX 1.0 and not sure if it is a bug or not.
My ImageButton is displayed correctly on a LG OPtimus and HTC Desire using TextureAtlas. However, on a Galaxy Tab2 the it becomes completely back, but it is still clickable.
If I load its texture from the AssetsManger, everything works fine on any device.
Here is the relevant part of the code:
stage = new Stage(new StretchViewport(fontCamera.viewportWidth,fontCamera.viewportHeight));
ImageButtonStyle styleButtonPlay = new ImageButtonStyle();
//this works
//textureButtonPlay = new TextureRegion(game.manager.get("data/ui/play.png",Texture.class));
//styleButtonPlay.imageUp = new TextureRegionDrawable(textureButtonPlay);
//this don't on Samsung Tab2
atlas = new TextureAtlas("data/shot/atlas.pack");
styleButtonPlay.imageUp = new TextureRegionDrawable(atlas.findRegion("ui/play"));
buttonPlay = new ImageButton(styleButtonPlay);
buttonPlay.addListener(
new ClickListener() {
public boolean touchDown(InputEvent event, float x, float y, int pointer, int button)
{
startGame();
return true;
}
});
buttonPlay.setSize(80, 60);
buttonPlay.setPosition(camera.viewportWidth/2 - buttonPlay.getWidth()/2,5);
stage.addActor(buttonPlay);
I now am concerned about packing all my sprites onto single imaged.
The problem has been resolved by creating a texturepack.png with the size smaller than 4096x4096.
For some reason it was ok only on some devices and no similar problem has been noticed on the desktop.
Hope this help someone...
see your code here:
atlas = new TextureAtlas("data/shot/atlas.pack");
style.imageUp = new TextureRegionDrawable(atlas.findRegion("ui/play"));
^^^^^
buttonPlay = new ImageButton(styleButtonPlay);
^^^^^^^^^^^^^^^
it looks like you assign the wrong style to your imageButton, try putting the drawable into the correct button style ("styleButtonPlay" instead "style"):
styleButtonPlay.imageUp = new TextureRegionDrawable(atlas.findRegion("ui/play"));
I have a com.badlogic.gdx.scenes.scene2d.ui.Image that is built from a Pixmap. The Pixmap is only one pixel because I'm using it to build an Image that functions as a background that can fade in and out.
Pixmap pmap = new Pixmap(1, 1, Pixmap.Format.RGBA8888);
pmap.setColor(1.0f, 1.0f, 1.0f, 1.0f);
pmap.drawPixel(0, 0);
bgImage = new Image(new Texture(pmap));
pmap.dispose();
bgImage.setSize(MyGame.VIRUAL_WIDTH, MyGame.VIRUAL_HEIGHT);
bgImage.getColor().a = 0.0f;
bgImage.addAction(Actions.sequence(Actions.fadeIn(1.0f),Actions.delay(3.0f),Actions.fadeOut(1.0f)));
stage.addActor(bgImage);
It works great but my concern is that the game might be paused while the actions are taking place. I assume the actions will continue upon resuming so I need to keep the same Image but the underlying Pixmap is not managed and therefore needs to be recreated upon resume. I'm having trouble figuring out how to reattach the Texture/Pixmap to the Image. Building the Pixmap itself is easy but getting an existing Image to use it is the problem.
My solution was as follows
Assume Pixmap pixmap = ...
TextureData texData = new PixmapTextureData(pixmap, Format.RGBA8888, false, false, true);
Texture texture = new Texture(texData);
Image image = new Image(texture);
The last flag in PixmapTextureData is "managed". It runs on mine.
You can check out the first portion of the following link to see what is managed and what is not. http://www.badlogicgames.com/wordpress/?p=1513
There is no setTexture method on an Image. Looking at the Image(Texture) constructor it wraps the texture in a drawable region:
this(new TextureRegionDrawable(new TextureRegion(texture)));
So you can do something similar and use the Image.setDrawable method to change the drawable object used. Something like this:
bgImage.setDrawable(new TextureRegionDrawable(new TextureRegion(new Texture(pmap))));
I think you can probably reuse the TextureRegion and all of its containers (so after generating a new pixmap, just wrap it in a Texture and push that into the saved TextureRegion from before the pause.
I am trying to build a portfolio application similar to the used by Whitevoid. I am using Flex 4 and Papervision3D 2. I have everything working except for one issue. When I try to load an external SWF as a material on one of the planes, I can see any native Flex or Flash components in their correct positions, but the papervision objects are not being rendered properly. It looks like the viewport is not being set in the nested swf. I have posted my code for loading the swf below.
private function loadMovie(path:String=""):void
{
loader = new Loader();
request = new URLRequest(path);
loader.contentLoaderInfo.addEventListener(Event.INIT, addMaterial);
loader.load(request);
}
private function addMaterial(e:Event):void
{
movie = new MovieClip();
movie.addChild(e.target.content);
var width:Number = 0;
var height:Number = 0;
width = loader.contentLoaderInfo.width;
height = loader.contentLoaderInfo.height;
//calculate the aspect ratio of the swf
var matAR:Number = width/height;
if (matAR > aspectRatio)
{
plane.scaleY = aspectRatio / matAR;
}
else if (matAR < aspectRatio)
{
plane.scaleX = matAR / aspectRatio;
}
var mat:MovieMaterial = new MovieMaterial(movie, false, true, false, new Rectangle(0, 0, width, height));
mat.interactive = true;
mat.smooth = true;
plane.material = mat;
}
Below I have posted two pictures. The first is a shot of the application running by itself. The second is the application as a MovieMaterial on a Plane. You can see how the button created as a spark object in the mxml stays in the correct position, but papervision sphere (which is rotating) is in the wrong location. Is there something I am missing here?
Man. I haven't seen that site in a while. Still one of the cooler PV projects...
What do you mean by:
I cannot properly see the scene rendered in Papervision
You say you can see the components in their appropriate positions, as in: you have a plane with what looks like the intended file loading up? But I'm guessing that you can't interact with it.
As far as I know, and I've spent a reasonable amount of time trying to make something similar work, the MovieMaterial (which I assume you're using) draws a Bitmap of whatever contents exist in your MovieClip, and if you set it to animated=true, then it will render out a series of bitmaps - equating animation. What it's not doing, is displaying an actual MovieClip (or SWF) on the plane. So you may see your components, but this is how:
MovieMaterial.as line 137
// ______________________________________________________________________ CREATE BITMAP
/**
*
* #param asset
* #return
*/
protected function createBitmapFromSprite( asset:DisplayObject ):BitmapData
{
// Set the new movie reference
movie = asset;
// initialize the bitmap since it's new
initBitmap( movie );
// Draw
drawBitmap();
// Call super.createBitmap to centralize the bitmap specific code.
// Here only MovieClip specific code, all bitmap code (maxUVs, AUTO_MIP_MAP, correctBitmap) in BitmapMaterial.
bitmap = super.createBitmap( bitmap );
return bitmap;
}
Note in the WhiteVoid you never actually interact with a movie until it "lands" = he's very likely swapping in a Movie on top of the bitmap textured plane.
The part that you are interacting with is probably another plane that holds the "button" that simply becomes visible on mouseover.
I think PV1.0 had access to real swfs as a material but this changed in 2.0. Sadly. Hopefully Molehill will.
cheers