pnmixer-rust/src/gui.rs

extern crate gtk;
extern crate gtk_sys;
extern crate gdk;
extern crate gdk_sys;
extern crate glib;
extern crate ffi;
extern crate libc;

use gtk::prelude::*;
use gdk::DeviceExt;
use gdk::{GrabOwnership, GrabStatus, BUTTON_PRESS_MASK, KEY_PRESS_MASK};
use gdk_sys::GDK_CURRENT_TIME;

pub fn set_slider(vol_scale_adj: &gtk::Adjustment, scale: f64) {
    vol_scale_adj.set_value(scale);
}

pub fn grab_devices(window: &gtk::Window) {
    let m_device = gtk::get_current_event_device();
    if m_device.is_none() {
        warn!("Couldn't get current device");
        return;
    }

    let device = m_device.unwrap();
    let gdk_window = window.get_window().unwrap();

    /* Grab the mouse */
    let m_grab_status =
        device.grab(&gdk_window,
                    GrabOwnership::None,
                    true,
                    BUTTON_PRESS_MASK,
                    None,
                    GDK_CURRENT_TIME as u32);

    if m_grab_status != GrabStatus::Success {
        warn!("Could not grab {}", device.get_name().unwrap());
    }

    /* Grab the keyboard */
    let m_k_dev = device.get_associated_device();
    if m_k_dev.is_none() {
        warn!("Couldn't get associated device");
        return;
    }
    let k_dev = m_k_dev.unwrap();

    let k_grab_status = k_dev.grab(&gdk_window,
                                   GrabOwnership::None,
                                   true,
                                   KEY_PRESS_MASK,
                                   None,
                                   GDK_CURRENT_TIME as u32);
    if k_grab_status != GrabStatus::Success {
        warn!("Could not grab {}", k_dev.get_name().unwrap())
    }
}