Play/Pause Button - Change Icon When Pressed in Button With Icon - TouchGFX

[MMoha.3]

Hello,

I have a button with a pause icon on it in TouchGFX, and I want to know how I can change the pause icon into a play icon after it is pressed. TouchGFX only gives me an option to change the icon while the icon is being pressed.

[Xzhiy.1]

TouchGFX Designer can't do this for you, you must make code by yourself, fortunately, there is many demo can help us, for example demo "audio_player_screen", my board is STM32H747i-DSCO. the demo can download from github.

following code extact from "audio_player_screen":

ClickListener<Button> playButton;//in header of view Class, you should use ClickListener other than use Button directly

playButton.setAction(playCallback);//in Constructor

playButton.setClickAction(playTouchedCallback);//in Constructor

void AudioPlayerView::playButtonTouched(const Button&, const ClickEvent& evt)

{

    coverImage.setTouched(evt.getType() == ClickEvent::PRESSED);

}

void AudioPlayerView::playButtonClicked(const AbstractButton& btn)

{

    presenter->playPauseClicked();

    playerState = presenter->isAudioPlaying() ? PLAYING : PAUSED;

    if (playerState == PLAYING)

    {

        playButton.setBitmaps(Bitmap(BITMAP_PAUSE_BUTTON_ID), Bitmap(BITMAP_PAUSE_BUTTON_ID));

    }

    else

    {

        playButton.setBitmaps(Bitmap(BITMAP_PLAY_BUTTON_ID), Bitmap(BITMAP_PLAY_BUTTON_ID));

    }

    playButton.invalidate();

...

}​

[MMoha.3 · Accepted solution]

Thank you, so I was able to do the task by using the setBitmaps function. Here's the code I came up with:

if (OSC_Status.Running_Stat == Stopped) { //from pause to play:
    	OSC_Status.Running_Stat = Running;
		RunButton.setBitmaps(touchgfx::Bitmap(BITMAP_DARK_BUTTONS_SQUARE_ICON_BUTTON_ID),
				touchgfx::Bitmap(BITMAP_DARK_BUTTONS_SQUARE_ICON_BUTTON_ID),
				touchgfx::Bitmap(BITMAP_BLUE_ICONS_PAUSE_32_ID),
				touchgfx::Bitmap(BITMAP_BLUE_ICONS_PAUSE_32_ID));
 // don't forget to invalidate
} else {					//from play to pause
    	OSC_Status.Running_Stat = Stopped;
		RunButton.setBitmaps(touchgfx::Bitmap(BITMAP_DARK_BUTTONS_SQUARE_ICON_BUTTON_ID),
				touchgfx::Bitmap(BITMAP_DARK_BUTTONS_SQUARE_ICON_BUTTON_ID),
				touchgfx::Bitmap(BITMAP_PLAY_32_ID),
				touchgfx::Bitmap(BITMAP_PLAY_32_ID));
 // don't forget to invalidate
}

also include "BitmapDatabase.hpp".

the bitmap id can be found in the images section of TouchGFX: