+ var canvas = document.createElement("canvas");
+
+ var context = canvas.getContext("2d");
+
+ canvas.width = this.minWidth;
+ canvas.height = this.minHeight;
+
+ switch (this.rotate) {
+ case 0 :
+
+ var width = (this.thumbEl.getWidth() / this.getScaleLevel() > this.imageEl.OriginWidth) ? this.imageEl.OriginWidth : (this.thumbEl.getWidth() / this.getScaleLevel());
+ var height = (this.thumbEl.getHeight() / this.getScaleLevel() > this.imageEl.OriginHeight) ? this.imageEl.OriginHeight : (this.thumbEl.getHeight() / this.getScaleLevel());
+
+ var x = (this.thumbEl.getLeft(true) > this.previewEl.getLeft(true)) ? 0 : ((this.previewEl.getLeft(true) - this.thumbEl.getLeft(true)) / this.getScaleLevel());
+ var y = (this.thumbEl.getTop(true) > this.previewEl.getTop(true)) ? 0 : ((this.previewEl.getTop(true) - this.thumbEl.getTop(true)) / this.getScaleLevel());
+
+ var targetWidth = this.minWidth - 2 * x;
+ var targetHeight = this.minHeight - 2 * y;
+
+ var scale = 1;
+
+ if((x == 0 && y == 0) || (x == 0 && y > 0)){
+ scale = targetWidth / width;
+ }
+
+ if(x > 0 && y == 0){
+ scale = targetHeight / height;
+ }
+
+ if(x > 0 && y > 0){
+ scale = targetWidth / width;
+
+ if(width < height){
+ scale = targetHeight / height;
+ }
+ }
+
+ context.scale(scale, scale);
+
+ var sx = Math.min(this.canvasEl.width - this.thumbEl.getWidth(), this.thumbEl.getLeft(true) - this.previewEl.getLeft(true));
+ var sy = Math.min(this.canvasEl.height - this.thumbEl.getHeight(), this.thumbEl.getTop(true) - this.previewEl.getTop(true));
+
+ sx = sx < 0 ? 0 : (sx / this.getScaleLevel());
+ sy = sy < 0 ? 0 : (sy / this.getScaleLevel());
+
+ context.drawImage(imageCanvas, sx, sy, width, height, x, y, width, height);
+
+ break;
+ case 90 :
+
+ var width = (this.thumbEl.getWidth() / this.getScaleLevel() > this.imageEl.OriginHeight) ? this.imageEl.OriginHeight : (this.thumbEl.getWidth() / this.getScaleLevel());
+ var height = (this.thumbEl.getHeight() / this.getScaleLevel() > this.imageEl.OriginWidth) ? this.imageEl.OriginWidth : (this.thumbEl.getHeight() / this.getScaleLevel());
+
+ var x = (this.thumbEl.getLeft(true) > this.previewEl.getLeft(true)) ? 0 : ((this.previewEl.getLeft(true) - this.thumbEl.getLeft(true)) / this.getScaleLevel());
+ var y = (this.thumbEl.getTop(true) > this.previewEl.getTop(true)) ? 0 : ((this.previewEl.getTop(true) - this.thumbEl.getTop(true)) / this.getScaleLevel());
+
+ var targetWidth = this.minWidth - 2 * x;
+ var targetHeight = this.minHeight - 2 * y;
+
+ var scale = 1;
+
+ if((x == 0 && y == 0) || (x == 0 && y > 0)){
+ scale = targetWidth / width;
+ }
+
+ if(x > 0 && y == 0){
+ scale = targetHeight / height;
+ }
+
+ if(x > 0 && y > 0){
+ scale = targetWidth / width;
+
+ if(width < height){
+ scale = targetHeight / height;
+ }
+ }
+
+ context.scale(scale, scale);
+
+ var sx = Math.min(this.canvasEl.width - this.thumbEl.getWidth(), this.thumbEl.getLeft(true) - this.previewEl.getLeft(true));
+ var sy = Math.min(this.canvasEl.height - this.thumbEl.getHeight(), this.thumbEl.getTop(true) - this.previewEl.getTop(true));
+
+ sx = sx < 0 ? 0 : (sx / this.getScaleLevel());
+ sy = sy < 0 ? 0 : (sy / this.getScaleLevel());
+
+ sx += (this.imageEl.OriginWidth > this.imageEl.OriginHeight) ? Math.abs(this.imageEl.OriginWidth - this.imageEl.OriginHeight) : 0;
+
+ context.drawImage(imageCanvas, sx, sy, width, height, x, y, width, height);
+
+ break;
+ case 180 :
+
+ var width = (this.thumbEl.getWidth() / this.getScaleLevel() > this.imageEl.OriginWidth) ? this.imageEl.OriginWidth : (this.thumbEl.getWidth() / this.getScaleLevel());
+ var height = (this.thumbEl.getHeight() / this.getScaleLevel() > this.imageEl.OriginHeight) ? this.imageEl.OriginHeight : (this.thumbEl.getHeight() / this.getScaleLevel());
+
+ var x = (this.thumbEl.getLeft(true) > this.previewEl.getLeft(true)) ? 0 : ((this.previewEl.getLeft(true) - this.thumbEl.getLeft(true)) / this.getScaleLevel());
+ var y = (this.thumbEl.getTop(true) > this.previewEl.getTop(true)) ? 0 : ((this.previewEl.getTop(true) - this.thumbEl.getTop(true)) / this.getScaleLevel());
+
+ var targetWidth = this.minWidth - 2 * x;
+ var targetHeight = this.minHeight - 2 * y;
+
+ var scale = 1;
+
+ if((x == 0 && y == 0) || (x == 0 && y > 0)){
+ scale = targetWidth / width;
+ }
+
+ if(x > 0 && y == 0){
+ scale = targetHeight / height;
+ }
+
+ if(x > 0 && y > 0){
+ scale = targetWidth / width;
+
+ if(width < height){
+ scale = targetHeight / height;
+ }
+ }
+
+ context.scale(scale, scale);
+
+ var sx = Math.min(this.canvasEl.width - this.thumbEl.getWidth(), this.thumbEl.getLeft(true) - this.previewEl.getLeft(true));
+ var sy = Math.min(this.canvasEl.height - this.thumbEl.getHeight(), this.thumbEl.getTop(true) - this.previewEl.getTop(true));
+
+ sx = sx < 0 ? 0 : (sx / this.getScaleLevel());
+ sy = sy < 0 ? 0 : (sy / this.getScaleLevel());
+
+ sx += (this.imageEl.OriginWidth > this.imageEl.OriginHeight) ? 0 : Math.abs(this.imageEl.OriginWidth - this.imageEl.OriginHeight);
+ sy += (this.imageEl.OriginWidth > this.imageEl.OriginHeight) ? Math.abs(this.imageEl.OriginWidth - this.imageEl.OriginHeight) : 0;
+
+ context.drawImage(imageCanvas, sx, sy, width, height, x, y, width, height);
+
+ break;
+ case 270 :
+
+ var width = (this.thumbEl.getWidth() / this.getScaleLevel() > this.imageEl.OriginHeight) ? this.imageEl.OriginHeight : (this.thumbEl.getWidth() / this.getScaleLevel());
+ var height = (this.thumbEl.getHeight() / this.getScaleLevel() > this.imageEl.OriginWidth) ? this.imageEl.OriginWidth : (this.thumbEl.getHeight() / this.getScaleLevel());
+
+ var x = (this.thumbEl.getLeft(true) > this.previewEl.getLeft(true)) ? 0 : ((this.previewEl.getLeft(true) - this.thumbEl.getLeft(true)) / this.getScaleLevel());
+ var y = (this.thumbEl.getTop(true) > this.previewEl.getTop(true)) ? 0 : ((this.previewEl.getTop(true) - this.thumbEl.getTop(true)) / this.getScaleLevel());
+
+ var targetWidth = this.minWidth - 2 * x;
+ var targetHeight = this.minHeight - 2 * y;
+
+ var scale = 1;
+
+ if((x == 0 && y == 0) || (x == 0 && y > 0)){
+ scale = targetWidth / width;
+ }
+
+ if(x > 0 && y == 0){
+ scale = targetHeight / height;
+ }
+
+ if(x > 0 && y > 0){
+ scale = targetWidth / width;
+
+ if(width < height){
+ scale = targetHeight / height;
+ }
+ }
+
+ context.scale(scale, scale);
+
+ var sx = Math.min(this.canvasEl.width - this.thumbEl.getWidth(), this.thumbEl.getLeft(true) - this.previewEl.getLeft(true));
+ var sy = Math.min(this.canvasEl.height - this.thumbEl.getHeight(), this.thumbEl.getTop(true) - this.previewEl.getTop(true));
+
+ sx = sx < 0 ? 0 : (sx / this.getScaleLevel());
+ sy = sy < 0 ? 0 : (sy / this.getScaleLevel());
+
+ sy += (this.imageEl.OriginWidth > this.imageEl.OriginHeight) ? 0 : Math.abs(this.imageEl.OriginWidth - this.imageEl.OriginHeight);
+
+ context.drawImage(imageCanvas, sx, sy, width, height, x, y, width, height);
+
+ break;
+ default :
+ break;
+ }