# \[Android\] Can you make a slide for the screen?
**URL:** https://discourse.processing.org/t/android-can-you-make-a-slide-for-the-screen/35284
**Category:** Processing for Android
**Created:** [February 19, 2022, 2:23am UTC](https://discourse.processing.org/t/android-can-you-make-a-slide-for-the-screen/35284 "2022-02-19T02:23:27Z")
**Posts on this page:** 8
**Page:** 1
### Author:  [@GWAK](https://discourse.processing.org/u/GWAK)
#### Post date: [February 19, 2022, 2:23am UTC](https://discourse.processing.org/t/android-can-you-make-a-slide-for-the-screen/35284/1 "2022-02-19T02:23:27Z")
Can you make a slide for the screen?
Hello. I want to put a slide function on the screen like the picture above.
Is it possible to create a slide view in ‘android’ using ‘processing’?
---
### Author:  [@jafal](https://discourse.processing.org/u/jafal)
#### Post date: [February 19, 2022, 4:26am UTC](https://discourse.processing.org/t/android-can-you-make-a-slide-for-the-screen/35284/2 "2022-02-19T04:26:38Z")
hi
this is close for what you want
> **[Scrollbar / Examples](https://processing.org/examples/scrollbar.html)**
>
> Move the scrollbars left and right to change the positions of the images.
you can adapt it for up down
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### Author:  [@GWAK](https://discourse.processing.org/u/GWAK)
#### Post date: [February 19, 2022, 9:33am UTC](https://discourse.processing.org/t/android-can-you-make-a-slide-for-the-screen/35284/3 "2022-02-19T09:33:35Z")
@jafal
Thank you for your kind and quick reply.
1. First off, the example file is a solution for landscape.
2. Is it correct to weave the solution for vertical as above? Or is there another way?
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### Author:  [@GWAK](https://discourse.processing.org/u/GWAK)
#### Post date: [February 19, 2022, 11:02am UTC](https://discourse.processing.org/t/android-can-you-make-a-slide-for-the-screen/35284/4 "2022-02-19T11:02:56Z")
Link : [Scrollbars up and down to change the positions of the text - #10 by Chrisir](https://discourse.processing.org/t/scrollbars-up-and-down-to-change-the-positions-of-the-text/13521/10)
@Chrisir
If you look at the link above, you see the code for ‘Chrisir’.
Is there no ‘library’ or other method other than how to create a scrollbar through the code above?
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### Author:  [@Chrisir](https://discourse.processing.org/u/Chrisir)
#### Post date: [February 19, 2022, 11:27am UTC](https://discourse.processing.org/t/android-can-you-make-a-slide-for-the-screen/35284/5 "2022-02-19T11:27:20Z")
See also [Scrollbar / Examples / Processing.org](https://processing.org/examples/scrollbar.html)
See also libraries and GUI section therein
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### Author:  [@jafal](https://discourse.processing.org/u/jafal)
#### Post date: [February 19, 2022, 10:04pm UTC](https://discourse.processing.org/t/android-can-you-make-a-slide-for-the-screen/35284/6 "2022-02-19T22:04:48Z")
hi
change this line the image moves up/down
```auto
image(img2, height/2, width/2-img2.width/2 + img2Pos*1.5);
```
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### Author:  [@jafal](https://discourse.processing.org/u/jafal)
#### Post date: [February 19, 2022, 10:13pm UTC](https://discourse.processing.org/t/android-can-you-make-a-slide-for-the-screen/35284/7 "2022-02-19T22:13:36Z")
```auto
/**
* Scrollbar.
*
* Move the scrollbars left and right to change the positions of the images.
*/
HScrollbar hs1, hs2; // Two scrollbars
PImage img1, img2; // Two images to load
void setup() {
size(640, 360);
noStroke();
hs1 = new HScrollbar(0, height/2-8, width, 16, 16);
hs2 = new HScrollbar(0, height/2+8, width, 16, 16);
// Load images
img1 = loadImage("seedTop.jpg");
img2 = loadImage("seedBottom.jpg");
}
void draw() {
background(255);
// Get the position of the img1 scrollbar
// and convert to a value to display the img1 image
float img1Pos = hs1.getPos()-width/2;
fill(255);
image(img1, width/2-img1.width/2 + img1Pos*1.5, 0);
// Get the position of the img2 scrollbar
// and convert to a value to display the img2 image
float img2Pos = hs2.getPos()-width/2;
fill(255);
//image(img2, width/2-img2.width/2 + img2Pos*1.5, height/2);
image(img2, height/2, width/2-img2.width/2 + img2Pos*1.5);
hs1.update();
hs2.update();
hs1.display();
hs2.display();
stroke(0);
line(0, height/2, width, height/2);
}
class HScrollbar {
int swidth, sheight; // width and height of bar
float xpos, ypos; // x and y position of bar
float spos, newspos; // x position of slider
float sposMin, sposMax; // max and min values of slider
int loose; // how loose/heavy
boolean over; // is the mouse over the slider?
boolean locked;
float ratio;
HScrollbar (float xp, float yp, int sw, int sh, int l) {
swidth = sw;
sheight = sh;
int widthtoheight = sw - sh;
ratio = (float)sw / (float)widthtoheight;
xpos = xp;
ypos = yp-sheight/2;
spos = xpos + swidth/2 - sheight/2;
newspos = spos;
sposMin = xpos;
sposMax = xpos + swidth - sheight;
loose = l;
}
void update() {
if (overEvent()) {
over = true;
} else {
over = false;
}
if (mousePressed && over) {
locked = true;
}
if (!mousePressed) {
locked = false;
}
if (locked) {
newspos = constrain(mouseX-sheight/2, sposMin, sposMax);
}
if (abs(newspos - spos) > 1) {
spos = spos + (newspos-spos)/loose;
}
}
float constrain(float val, float minv, float maxv) {
return min(max(val, minv), maxv);
}
boolean overEvent() {
if (mouseX > xpos && mouseX < xpos+swidth &&
mouseY > ypos && mouseY < ypos+sheight) {
return true;
} else {
return false;
}
}
void display() {
noStroke();
fill(204);
rect(xpos, ypos, swidth, sheight);
if (over || locked) {
fill(0, 0, 0);
} else {
fill(102, 102, 102);
}
rect(spos, ypos, sheight, sheight);
}
float getPos() {
// Convert spos to be values between
// 0 and the total width of the scrollbar
return spos * ratio;
}
}
```
---
### Author:  [@GWAK](https://discourse.processing.org/u/GWAK)
#### Post date: [February 20, 2022, 1:44am UTC](https://discourse.processing.org/t/android-can-you-make-a-slide-for-the-screen/35284/8 "2022-02-20T01:44:31Z")
@jafal@Chrisir
> [@Scrollbars up and down to change the positions of the text](https://discourse.processing.org/t/scrollbars-up-and-down-to-change-the-positions-of-the-text/13521/9):
>
> From the example you need to init the class and display the scroll bar This is the core line: // Get the position of the img1 scrollbar // and convert to a value to display the img1 image float img1Pos = hs1.getPos()-width/2; When you say println(img1Pos); you will see the values Now use this value before text() command: translate (0, img1Pos); text( „Hello“, 22, 100);
If you look at the link above, there is a ‘vertical’ source code made by ‘Chrisir’.
However, I wonder if it is actually made using this way. Is it to make vertical scrolling like this in ‘Android’? Or is there another way?