screen center

[cassius]

I need to show a dialog box in center of screen no matter what size monitor is.Are there screenheight and screenwidth variables available?

[Josh]

See GetWidth() and GetHeight():

http://www.leadwerks.com/werkspace/page/api-reference/_/context/

[Slastraf]

you take the height and width and divide it by two

[cassius]

Thanks

[cassius]

I need more help on this if possible. I used context->GetHeight(); etc but now the dialog ( image) is showing in the lower right side of the screen

 

if (title_on)

{

int w = context->GetWidth();

int h = context->GetHeight();

context->SetBlendMode(Blend::Solid);

context->DrawImage(title, w/2, h/2);

}

[cassius]

if (title_on)

{

 

 

context->SetBlendMode(Blend::Solid);

 

context->DrawImage(title, 0, 0, context->GetWidth()/2, context->GetHeight() / 2);

 

}

 

This displays image top left of screen which is better but I want it in the middle.

[macklebee]

You have to take into account the width/height of the image as well if you are trying to center it.

 

so essentially (psuedocode):

context_w = Context:GetWidth()

context_h = Context:GetHeight()

image_w = Texture:GetWidth()

image_h = Texture:GetHeight()

Context:DrawImage( image, (context_w - image_w) / 2 , (context_h - image_h) / 2, image_w, image_h )

[Thirsty Panther]

if (title_on)

{

 

 

context->SetBlendMode(Blend::Solid);

 

context->DrawImage(title, 0, 0, context->GetWidth()/2, context->GetHeight() / 2);

 

}

 

This displays image top left of screen which is better but I want it in the middle.

 

It's in the top left corner because you are telling it to draw "title" at position 0,0 and its size is half the screen width and half the screen height.

For top of the centre of screen - title,W/2,0

For middle of screen - title, w/2,h/2

Rember that this is where the image will start to draw from so you may need to factor an offset so that the size of the image is accounted for.

If you check out Aggrors project Saturn health bar he explains it well.

Hope this helps.

 

[cassius]

Thanks mac I can use that. I am using "window" now instead of context but it shouldn;t make much difference.

[Thirsty Panther]

Too quick for me Mac.

[cassius]

Thanks thirsy panther.

[Josh]

If you don't supply the width and height parameters, it will just be the texture's own size, by default.

[cassius]

I have it filling the screen now which is better than my first intention. It looks ok.