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MouseArea::on_release doesn't work when image::Viewer is the child #2743

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4 tasks done
rhysd opened this issue Jan 23, 2025 · 0 comments · May be fixed by #2744
Open
4 tasks done

MouseArea::on_release doesn't work when image::Viewer is the child #2743

rhysd opened this issue Jan 23, 2025 · 0 comments · May be fixed by #2744
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bug Something isn't working

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@rhysd
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rhysd commented Jan 23, 2025

Is your issue REALLY a bug?

  • My issue is indeed a bug!
  • I am not crazy! I will not fill out this form just to ask a question or request a feature. Pinky promise.

Is there an existing issue for this?

  • I have searched the existing issues.

Is this issue related to iced?

  • My hardware is compatible and my graphics drivers are up-to-date.

What happened?

I want to capture a mouse click inside image::Viewer and emit some message. However image::Viewer captures both the pressed and released events inside the widget so the events cannot be captured by the parent MouseArea.

Here is a reproduction:

use iced::widget::image::viewer::Viewer;
use iced::widget::image::Handle;
use iced::widget::{container, mouse_area, Container};
use iced::Length::Fill;
use std::env;

#[derive(Debug, Clone)]
enum Message {
    Clicked,
}

struct App(Handle);

impl Default for App {
    fn default() -> Self {
        Self(Handle::from_path(env::args_os().nth(1).unwrap()))
    }
}

impl App {
    fn update(&mut self, message: Message) {
        println!("{message:?}");
    }

    fn view(&self) -> Container<Message> {
        container(
            mouse_area(Viewer::new(&self.0).width(Fill).height(Fill))
                .on_release(Message::Clicked),
        )
        .center(Fill)
    }
}

fn main() -> iced::Result {
    iced::run("Test", App::update, App::view)
}

What is the expected behavior?

Prints Clicked when clicking inside the image viewer.

Version

master

Operating System

macOS

Do you have any log output?

@rhysd rhysd added the bug Something isn't working label Jan 23, 2025
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