From: Brendan Hansen <brendan.f.hansen@gmail.com>
Date: Tue, 16 Feb 2021 19:57:12 +0000 (-0600)
Subject: added basic font rendering
X-Git-Url: https://git.brendanfh.com/?a=commitdiff_plain;h=64e5feb095e3c396a020809f82b8581c6878004c;p=onyx-prez.git

added basic font rendering
---

diff --git a/dist/index.js b/dist/index.js
index df5e9cb..345ee1f 100644
--- a/dist/index.js
+++ b/dist/index.js
@@ -33,6 +33,16 @@ let canvas_import_obj = {
     fillRect(canvas, x, y, w, h, r, g, b, a) {
         canvasCtx.fillStyle = `rgba(${r * 255}, ${g * 255}, ${b * 255}, ${a})`; 
         canvasCtx.fillRect(x, y, w, h);
+    },
+
+    fillText(canvas, text_ptr, text_len, x, y, max_width) {
+        const data = new Uint8Array(wasm_instance.exports.memory.buffer, text_ptr, text_len);
+        const str  = new TextDecoder().decode(data);
+
+        canvasCtx.fillStyle = "#ffffff";
+        
+        if (max_width > 0) canvasCtx.fillText(str, x, y, max_width);
+        else               canvasCtx.fillText(str, x, y);
     }
 }
 
diff --git a/src/prez.onyx b/src/prez.onyx
index 8487335..56af482 100644
--- a/src/prez.onyx
+++ b/src/prez.onyx
@@ -11,6 +11,8 @@ Canvas :: struct {
     fill_rect :: (handle: Handle,
         x: f32, y: f32, w: f32, h: f32,
         r: f32, g: f32, b: f32, a := 1.0f) -> void #foreign "canvas" "fillRect" ---
+
+    fill_text :: (handle: Handle, text: str, x: f32, y: f32, max_width: f32 = -1.0f) -> void #foreign "canvas" "fillText" ---
 }
 
 setup_canvas :: () {
@@ -26,6 +28,8 @@ setup_canvas :: () {
 
     width, height := cast(f32) get_width(canvas), cast(f32) get_height(canvas);
     fill_rect(canvas, width / 2, height / 2, width / 2, height / 2, 1, 0, 0);
+
+    fill_text(canvas, "Hello, World!!", width / 2, height / 2);
 }
 
 main :: (args: [] cstr) {