Merge branch 'master' of https://github.com/fluttercandies/flutter_image_editor

Author: CaiJingLong

ios/Classes/FIUIImageHandler.m

@@ -248,7 +248,7 @@ - (void)scale:(FIScaleOption *)option {
     return;
   }
 
-  UIGraphicsBeginImageContext(outImage.size);
+  UIGraphicsBeginImageContext(CGSizeMake(option.width, option.height));
 
   CGContextRef ctx = UIGraphicsGetCurrentContext();
   if (!ctx) {
@@ -292,14 +292,14 @@ - (void)addText:(FIAddTextOption *)option {
     UIColor *color = [UIColor colorWithRed:(text.r / 255.0) green:(text.g / 255.0) blue:(text.b / 255.0) alpha:(text.a / 255.0)];
 
     UIFont *font;
-      
+
       if ([@"" isEqualToString: text.fontName ]){
         font = [UIFont systemFontOfSize:text.fontSizePx];
       }else{
           font = [UIFont fontWithName:text.fontName size:text.fontSizePx];
       }
 
-      
+
     NSDictionary *attr = @{
             NSFontAttributeName: font,
             NSForegroundColorAttributeName: color,