Add the posibility to specify buffer for CGContext

2017-04-04 15:40:32 +02:00
parent a4d3c12cb5
commit 81ded0d8ab
1 changed files with 3 additions and 2 deletions
@@ -88,7 +88,8 @@ impl TCFType<CGContextRef> for CGContext {
 }

 impl CGContext {
-    pub fn create_bitmap_context(width: size_t,
+    pub fn create_bitmap_context(data: Option<*mut c_void>,
+                                 width: size_t,
                                 height: size_t,
                                 bits_per_component: size_t,
                                 bytes_per_row: size_t,
@@ -96,7 +97,7 @@ impl CGContext {
                                 bitmap_info: u32)
                                 -> CGContext {
        unsafe {
-            let result = CGBitmapContextCreate(ptr::null_mut(),
+            let result = CGBitmapContextCreate(data.unwrap_or(ptr::null_mut()),
                                               width,
                                               height,
                                               bits_per_component,