From 91a6cdb9dc827de86d124721ce47d0e9c15ae383 Mon Sep 17 00:00:00 2001
From: JunsuChoi <jsuya.choi@samsung.com>
Date: Wed, 14 Sep 2022 13:23:20 +0900
Subject: [PATCH] wasm: Update size calculation logic

revised the logic to align svg images in the center of the view.
this is the subsequent changes to 3939b61770c14602d7e349ba0baa21d9f4d97a44.
---
 src/wasm/thorvgwasm.cpp | 14 +++++++++++++-
 1 file changed, 13 insertions(+), 1 deletion(-)

diff --git a/src/wasm/thorvgwasm.cpp b/src/wasm/thorvgwasm.cpp
index 2fb74311..d8bcaf64 100644
--- a/src/wasm/thorvgwasm.cpp
+++ b/src/wasm/thorvgwasm.cpp
@@ -255,7 +255,19 @@ private:
         mBuffer = make_unique<uint8_t[]>(mWidth * mHeight * 4);
         mSwCanvas->target((uint32_t *)mBuffer.get(), mWidth, mWidth, mHeight, SwCanvas::ARGB8888);
 
-        if (mPicture) mPicture->size(width, height);
+        if (mPicture) {
+            float scale;
+            float shiftX = 0.0f, shiftY = 0.0f;
+            if (mOriginalSize[0] > mOriginalSize[1]) {
+                scale = width / mOriginalSize[0];
+                shiftY = (height - mOriginalSize[1] * scale) * 0.5f;
+            } else {
+                scale = height / mOriginalSize[1];
+                shiftX = (width - mOriginalSize[0] * scale) * 0.5f;
+            }
+            mPicture->scale(scale);
+            mPicture->translate(shiftX, shiftY);
+        }
     }
 
     struct Layer