yog-runtime 0.111.0

//! Textures the runtime makes (rasterized SVGs, text in Yog's fonts):
//! handed to the host as dynamic textures, drawn like any other.

use jni::JNIEnv;
use yog_abi::YogStr;
use yog_gfx::{Color, Rect};

use crate::jni::call::jcall;

/// Hands the host texture `id`: `w`×`h` RGBA pixels (straight alpha); whether it took it.
pub(crate) fn register(env: &mut JNIEnv, id: &str, w: u32, h: u32, rgba: &[u8]) -> bool {
    let ok: Option<bool> = unsafe {
        jcall!(
            env,
            "dev/yog/render/NativeDraw",
            "registerTexture",
            [
                S(YogStr::from_str(id)),
                I(w as i32),
                I(h as i32),
                Bytes(rgba)
            ]
        )
    };
    ok == Some(true)
}

/// Replaces texture `id`'s pixels (`w`×`h` RGBA) — kept when its size is
/// the same, else made anew (a video's frame each frame); whether it took them.
pub(crate) fn update(env: &mut JNIEnv, id: &str, w: u32, h: u32, rgba: &[u8]) -> bool {
    let ok: Option<bool> = unsafe {
        jcall!(
            env,
            "dev/yog/render/NativeDraw",
            "updateTexture",
            [
                S(YogStr::from_str(id)),
                I(w as i32),
                I(h as i32),
                Bytes(rgba)
            ]
        )
    };
    ok == Some(true)
}

/// Lets go of texture `id`.
pub(crate) fn release(env: &mut JNIEnv, id: &str) {
    let _: Option<()> = unsafe {
        jcall!(
            env,
            "dev/yog/render/NativeDraw",
            "releaseTexture",
            [S(YogStr::from_str(id))]
        )
    };
}

/// Draws the whole of texture `id` (`size` its pixels) into `dest` GUI pixels, colors times `tint`.
pub(crate) fn draw(env: &mut JNIEnv, id: &str, size: (u32, u32), dest: Rect, tint: Color) {
    let (fw, fh) = (size.0 as f32, size.1 as f32);
    let Rect { x, y, w, h } = dest;
    let _: Option<()> = unsafe {
        jcall!(
            env,
            "dev/yog/render/NativeDraw",
            "drawImage",
            [
                S(YogStr::from_str(id)),
                F(x),
                F(y),
                F(w),
                F(h),
                F(0.0),
                F(0.0),
                F(fw),
                F(fh),
                F(fw),
                F(fh),
                I(tint.0 as i32)
            ]
        )
    };
}