日期:2014-05-17 浏览次数:20453 次
function read() { a = "AjaxDataPage/GetIndexPic.aspx"; b = ""; c = "get"; var ajax = new AJAXTRANSA(a, { enabled: true }); ajax.SubValue(a, b, c); ajax.AJAX_SUBMIT(); ajax.Return = function (a) { var obj = a.responseText; alert(obj); strimag = obj.split("<")[0];
/// <summary> /// 获取一个图片按等比例缩小后的大小。 /// </summary> /// <param name="maxWidth">需要缩小到的宽度</param> /// <param name="maxHeight">需要缩小到的高度</param> /// <param name="imageOriginalWidth">图片的原始宽度</param> /// <param name="imageOriginalHeight">图片的原始高度</param> /// <returns>返回图片按等比例缩小后的实际大小</returns> public static Size GetNewSize(int maxWidth, int maxHeight, int imageOriginalWidth, int imageOriginalHeight) { double w = 0.0; double h = 0.0; double sw = Convert.ToDouble(imageOriginalWidth); double sh = Convert.ToDouble(imageOriginalHeight); double mw = Convert.ToDouble(maxWidth); double mh = Convert.ToDouble(maxHeight); if (sw < mw && sh < mh) { w = sw; h = sh; } else if ((sw / sh) > (mw / mh)) { w = maxWidth; h = (w * sh) / sw; } else { h = maxHeight; w = (h * sw) / sh; } return new Size(Convert.ToInt32(w), Convert.ToInt32(h)); }
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///<summary> /// 生成缩略图 /// </summary> /// <param name="originalImagePath">源图路径(物理路径)</param> /// <param name="thumbnailPath">缩略图路径(物理路径)</param> /// <param name="width">缩略图宽度</param> /// <param name="height">缩略图高度</param> /// <param name="mode">生成缩略图的方式</param> /// <param name="outthumbnailPath"></param> private void MakeThumbnail(string originalImagePath, string thumbnailPath, int width, int height, string mode, out string outthumbnailPath) { System.Drawing.Image originalImage = System.Drawing.Image.FromFile(originalImagePath); int towidth = width; int toheight = height; int x = 0; int y = 0; int ow = originalImage.Width; int oh = originalImage.Height; switch (mode) { case "HW"://指定高宽缩放(可能变形) break; case "W"://指定宽,高按比例 toheight = originalImage.Height * width / originalImage.Width; break; case "H"://指定高,宽按比例 towidth = originalImage.Width * height / originalImage.Height; break; case "Cut"://指定高宽裁减(不变形) if ((double)originalImage.Width / (double)originalImage.Height > (double)towidth / (double)toheight) { oh = originalImage.Height; ow = originalImage.Height * towid