scale to fill all available space, preserve aspect ratio Created Nov 12, 2009

sometimes it would be nice to scale preview pictures to max available space without black borders.

this patch implements a "overstretch" option for this:

Index: src/actionscript/org/flowplayer/model/MediaSize.as
===================================================================
--- src/actionscript/org/flowplayer/model/MediaSize.as  (revision 334)
+++ src/actionscript/org/flowplayer/model/MediaSize.as  (working copy)
@@ -29,6 +29,7 @@
                public static const HALF_FROM_ORIGINAL:MediaSize = new MediaSize("half");
                public static const ORIGINAL:MediaSize = new MediaSize("orig");
                public static const FILLED_TO_AVAILABLE_SPACE:MediaSize = new MediaSize("scale");
+               public static const FILL_MAX_SPACE:MediaSize = new MediaSize("overstretch");

                public static var ALL_VALUES:Dictionary = new Dictionary();
                {
@@ -36,6 +37,7 @@
                ALL_VALUES[HALF_FROM_ORIGINAL._value] = HALF_FROM_ORIGINAL;
                ALL_VALUES[ORIGINAL._value] = ORIGINAL;
                ALL_VALUES[FILLED_TO_AVAILABLE_SPACE._value] = FILLED_TO_AVAILABLE_SPACE;
+               ALL_VALUES[FILL_MAX_SPACE._value] = FILL_MAX_SPACE;
                }

                private static var enumCreated:Boolean;
Index: src/actionscript/org/flowplayer/view/MediaResizer.as
===================================================================
--- src/actionscript/org/flowplayer/view/MediaResizer.as        (revision 334)
+++ src/actionscript/org/flowplayer/view/MediaResizer.as        (working copy)
@@ -56,6 +56,8 @@
                                resized = resizeToHalfAvailableSize();
                        } else if (sizingOption == MediaSize.ORIGINAL) {
                                resized = resizeToOrig(force);
+                       } else if (sizingOption == MediaSize.FILL_MAX_SPACE) {
+                               resized = resizeToMaxFill();
                        } else if (sizingOption == MediaSize.FILLED_TO_AVAILABLE_SPACE) {
                                resized = resizeToMax();
                        }
@@ -80,6 +82,23 @@
                        return true;
                }

+               private function resizeToMaxFill():Boolean {
+                       if (origHeight == 0 || origHeight == 0) {
+                               log.warn("resizeToFit: original sizes not available, will not resize");
+                               return false;
+                       }
+                       log.debug("resize to fill max");
+
+                       var xRatio:Number = _maxWidth / origWidth;
+
+                       if (xRatio * origHeight <= _maxHeight) {
+                               scale(_maxHeight / origHeight);
+                       } else {
+                               scale(xRatio);
+                       }
+                       return true;
+               }
+
                public function scale(scalingFactor:Number):void {
                        resize(scalingFactor * origWidth, scalingFactor * origHeight);
                }