[GH-ISSUE #1314] Next Page for extra options in Display #660

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opened 2026-02-28 00:04:08 +03:00 by kerem · 2 comments

kerem commented

2026-02-28 00:04:08 +03:00

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Originally created by @LmfaoHax on GitHub (Sep 24, 2020).
Original GitHub issue: https://github.com/SpacehuhnTech/esp8266_deauther/issues/1314

hello there
how can we define if there is more menu nodes so it goes to next page?
for example if i add a new option on the menu so they become 6 options but only 5 can be displayed (while my oled is big enough and configured if there would be more content ) ?

i can see there are somethings about this in void DisplayUI::drawMenu()
but cant figure which part is designed for this ( going to next page if there are more options than 5 )

int row = (currentMenu->selected / 4) * 5; // /5

i edited the above value to 4 to check if the clock would go to next page and it kinda works but the problem is that when it goes to next page its blank and i cant see "CLOCK" option

and the real situation is that im configuring this on a 0.91 OLED device and the last unsolved thing about is that i need to force it go to the next page after 4 options but i dont know where this is defined in your code

Originally created by @LmfaoHax on GitHub (Sep 24, 2020). Original GitHub issue: https://github.com/SpacehuhnTech/esp8266_deauther/issues/1314 hello there how can we define if there is more menu nodes so it goes to next page? for example if i add a new option on the menu so they become 6 options but only 5 can be displayed (while my oled is big enough and configured if there would be more content ) ? i can see there are somethings about this in void DisplayUI::drawMenu() but cant figure which part is designed for this ( going to next page if there are more options than 5 ) int row = (currentMenu->selected / 4) * 5; // /5 i edited the above value to 4 to check if the clock would go to next page and it kinda works but the problem is that when it goes to next page its blank and i cant see "CLOCK" option and the real situation is that im configuring this on a 0.91 OLED device and the last unsolved thing about is that i need to force it go to the next page after 4 options but i dont know where this is defined in your code

kerem

2026-02-28 00:04:08 +03:00

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kerem commented

2026-02-28 00:04:08 +03:00

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@ghost commented on GitHub (Sep 28, 2020):

Hi! As far as I understand you don't know how the display will behave if there are a lot of items. Since I don't know the Arduino programming language, but I think this will help you https://www.youtube.com/watch?v=N0s2Qmrsu4A .
This video is in Russian, but I think it will still help you!

@ghost commented on GitHub (Sep 28, 2020): Hi! As far as I understand you don't know how the display will behave if there are a lot of items. Since I don't know the Arduino programming language, but I think this will help you https://www.youtube.com/watch?v=N0s2Qmrsu4A . This video is in Russian, but I think it will still help you!

kerem commented

2026-02-28 00:04:08 +03:00

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@LmfaoHax commented on GitHub (Sep 28, 2020):

Hi! As far as I understand you don't know how the display will behave if there are a lot of items. Since I don't know the Arduino programming language, but I think this will help you https://www.youtube.com/watch?v=N0s2Qmrsu4A .
This video is in Russian, but I think it will still help you!

Thanks that video really helped me out to figure whats really going on an oled

i also figured out how we can define how many options we want to be displayed by adjusting the following part in DisplayUI.cpp

void DisplayUI::drawMenu() {
    String tmp;
    int    tmpLen;
    int    row = (currentMenu->selected / 4) * 4; 

    // correct selected if it's off
    if (currentMenu->selected < 0) currentMenu->selected = 0;
    else if (currentMenu->selected >= currentMenu->list->size()) currentMenu->selected = currentMenu->list->size() - 1;

    // draw menu entries
    for (int i = row; i < currentMenu->list->size() && i < row + 4; i++) {
        tmp    = currentMenu->list->get(i).getStr();
        tmpLen = tmp.length();

        // horizontal scrolling
        if ((currentMenu->selected == i) && (tmpLen >= maxLen)) {
            tmp = tmp + tmp;
            tmp = tmp.substring(scrollCounter, scrollCounter + maxLen - 1);
            
            if ((scrollCounter > 0 && scrollTime < currentTime - scrollSpeed) || (scrollCounter == 0 && scrollTime < currentTime - scrollSpeed * 4)){
              scrollTime = currentTime;
              scrollCounter++;
            }
            
            if (scrollCounter > tmpLen) scrollCounter = 0;
        }

        tmp = (currentMenu->selected == i ? CURSOR : SPACE) + tmp;
        drawString(0, (i - row) * 8, tmp);
    }
}

change any "4" you see in above code which in above adjusted code the menu contains only 4 options and will go to the next page if you try to select 5th option and etc ...

btw i needed this for my 0.91 oled heltec device which all adjusted code is available >here<

@LmfaoHax commented on GitHub (Sep 28, 2020): > > > Hi! As far as I understand you don't know how the display will behave if there are a lot of items. Since I don't know the Arduino programming language, but I think this will help you https://www.youtube.com/watch?v=N0s2Qmrsu4A . > This video is in Russian, but I think it will still help you! Thanks that video really helped me out to figure whats really going on an oled i also figured out how we can define how many options we want to be displayed by adjusting the following part in DisplayUI.cpp ``` void DisplayUI::drawMenu() { String tmp; int tmpLen; int row = (currentMenu->selected / 4) * 4; // correct selected if it's off if (currentMenu->selected < 0) currentMenu->selected = 0; else if (currentMenu->selected >= currentMenu->list->size()) currentMenu->selected = currentMenu->list->size() - 1; // draw menu entries for (int i = row; i < currentMenu->list->size() && i < row + 4; i++) { tmp = currentMenu->list->get(i).getStr(); tmpLen = tmp.length(); // horizontal scrolling if ((currentMenu->selected == i) && (tmpLen >= maxLen)) { tmp = tmp + tmp; tmp = tmp.substring(scrollCounter, scrollCounter + maxLen - 1); if ((scrollCounter > 0 && scrollTime < currentTime - scrollSpeed) || (scrollCounter == 0 && scrollTime < currentTime - scrollSpeed * 4)){ scrollTime = currentTime; scrollCounter++; } if (scrollCounter > tmpLen) scrollCounter = 0; } tmp = (currentMenu->selected == i ? CURSOR : SPACE) + tmp; drawString(0, (i - row) * 8, tmp); } } ``` - change any "4" you see in above code which in above adjusted code the menu contains only 4 options and will go to the next page if you try to select 5th option and etc ... btw i needed this for my 0.91 oled heltec device which all adjusted code is available >[here](https://github.com/GrandJohnny/Heltec-deauther)<