/// <summary>resize the png image</summary>
/// <param name="sourceUrl">valid source image url</param>
/// <param name="destPath">destination image path that saved image there</param>
/// <param name="width">width that image resized to them</param>
/// <param name="height">height that image resized to them</param>
/// <param name="compress">compress image if that true</param>
/// <returns>return true if do correctly else return false</returns>
public static bool ResizePngForWeb(string sourceUrl, string destPath, int width, int height, bool compress = false)
{
try
{
if (String.IsNullOrEmpty(sourceUrl) || String.IsNullOrEmpty(destPath) || width <= 0 || height <= 0)
{
return(false);
}
using (WebP webp = new WebP())
{
Bitmap bmp = new Bitmap(Helper.DownloadImage(sourceUrl));
var webp_byte = webp.EncodeLossless(bmp);
if (compress)
{
bmp = webp.GetThumbnailFast(webp_byte, width, height);
}
else
{
bmp = webp.GetThumbnailQuality(webp_byte, width, height);
}
bmp.Save(destPath, System.Drawing.Imaging.ImageFormat.Png);
}
return(true);
}
catch { throw; }
}
/// <summary>convert webp image to png and resize image</summary>
/// <param name="sourceUrl">valid source image url</param>
/// <param name="destPath">destination image path that saved image there</param>
/// <param name="width">width that image resized to them</param>
/// <param name="height">height that image resized to them</param>
/// <param name="compress">compress image if that true</param>
/// <returns>return true if do correctly else return false</returns>
public static bool WebPToPngFromWeb(string sourceUrl, string destPath, int width, int height, bool compress = false)
{
try
{
if (String.IsNullOrEmpty(sourceUrl) || String.IsNullOrEmpty(destPath) || width <= 0 || height <= 0)
{
return(false);
}
using (WebP webp = new WebP())
{
var stream = Helper.DownloadImage(sourceUrl);
var webp_byte = Helper.ReadByte(stream);
Bitmap bmp;
if (compress)
{
bmp = webp.GetThumbnailFast(webp_byte, width, height);
}
else
{
bmp = webp.GetThumbnailQuality(webp_byte, width, height);
}
bmp.Save(destPath, System.Drawing.Imaging.ImageFormat.Png);
}
return(true);
}
catch { throw; }
}
/// <summary>convert webp image to png</summary>
/// <param name="sourceUrl">valid source image path</param>
/// <param name="destPath">destination image path that saved image there</param>
/// <param name="compress">compress image if that true</param>
/// <returns>return true if do correctly else return false</returns>
public static bool WebPToPng(string sourcePath, string destPath, bool compress = false)
{
try
{
if (String.IsNullOrEmpty(sourcePath) || String.IsNullOrEmpty(destPath))
{
return(false);
}
using (WebP webp = new WebP())
{
var bmp = webp.Load(sourcePath);
var webp_byte = webp.LoadByte(sourcePath);
if (compress)
{
bmp = webp.GetThumbnailFast(webp_byte, bmp.Width, bmp.Height);
}
else
{
bmp = webp.GetThumbnailQuality(webp_byte, bmp.Width, bmp.Height);
}
bmp.Save(destPath, System.Drawing.Imaging.ImageFormat.Png);
}
return(true);
}
catch { throw; }
}
/// <summary>resize the webp image</summary>
/// <param name="sourcePath">valid source image path</param>
/// <param name="destPath">destination image path that saved image there</param>
/// <param name="width">width that image resized to them</param>
/// <param name="height">height that image resized to them</param>
/// <param name="compress">compress image if that true</param>
/// <returns>return true if do correctly else return false</returns>
public static bool ResizeWebP(string sourcePath, string destPath, int width, int height, bool compress = false)
{
try
{
if (String.IsNullOrEmpty(sourcePath) || String.IsNullOrEmpty(destPath) || width <= 0 || height <= 0)
{
return(false);
}
using (WebP webp = new WebP())
{
var webp_byte = webp.LoadByte(sourcePath);
Bitmap bmp;
if (compress)
{
bmp = webp.GetThumbnailFast(webp_byte, width, height);
}
else
{
bmp = webp.GetThumbnailQuality(webp_byte, width, height);
}
webp.Save(bmp, destPath);
}
return(true);
}
catch { throw; }
}
/// <summary>convert png image to webp and resize image</summary>
/// <param name="sourceUrl">valid source image url</param>
/// <param name="destPath">destination image path that saved image there</param>
/// <param name="width">width that image resized to them</param>
/// <param name="height">height that image resized to them</param>
/// <param name="quality">quality of converted image, between 0 and 100 <para>min quality : 0 </para><para>max quality : 100</para></param>
/// <returns>return true if do correctly else return false</returns>
public static bool PngToWebPFromWeb(string sourceUrl, string destPath, int width, int height, int quality = 100)
{
try
{
if (String.IsNullOrEmpty(sourceUrl) || String.IsNullOrEmpty(destPath) || width <= 0 || height <= 0)
{
return(false);
}
if (quality <= 0 || quality > 100)
{
quality = 100;
}
using (WebP webp = new WebP())
{
Bitmap bmp = new Bitmap(Helper.DownloadImage(sourceUrl));
var webp_byte = webp.EncodeLossless(bmp);
bmp = webp.GetThumbnailQuality(webp_byte, width, height);
webp.Save(bmp, destPath, quality);
}
return(true);
}
catch { throw; }
}
/// <summary>
/// Test for load thumbnail function
/// </summary>
private void ButtonThumbnail_Click(object sender, EventArgs e)
{
try
{
using (OpenFileDialog openFileDialog = new OpenFileDialog())
{
openFileDialog.Filter = "WebP files (*.webp)|*.webp";
openFileDialog.FileName = "";
if (openFileDialog.ShowDialog() == DialogResult.OK)
{
string pathFileName = openFileDialog.FileName;
byte[] rawWebP = File.ReadAllBytes(pathFileName);
using (WebP webp = new WebP())
this.pictureBox.Image = webp.GetThumbnailQuality(rawWebP, 200, 150);
}
}
}
catch (Exception ex)
{
MessageBox.Show(ex.Message + "\r\nIn WebPExample.buttonThumbnail_Click", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}