تبدیل عکس به آیکون - نسخه قابل چاپ

کد:
private Icon MakeIcon(Image img, int size, bool keepAspectRatio)



        {



            Bitmap square = new Bitmap(size, size); // create new bitmap



            Graphics g = Graphics.FromImage(square); // allow drawing to it



 



            int x, y, w, h; // dimensions for new image



 



            if (!keepAspectRatio || img.Height == img.Width)



            {



                // just fill the square



                x = y = 0; // set x and y to 0



                w = h = size; // set width and height to size



            }



            else



            {



                // work out the aspect ratio



                float r = (float)img.Width / (float)img.Height;



 



                // set dimensions accordingly to fit inside size^2 square



                if (r > 1)



                { // w is bigger, so divide h by r



                    w = size;



                    h = (int)((float)size / r);



                    x = 0; y = (size - h) / 2; // center the image



                }



                else



                { // h is bigger, so multiply w by r



                    w = (int)((float)size * r);



                    h = size;



                    y = 0; x = (size - w) / 2; // center the image



                }



            }



 



            // make the image shrink nicely by using HighQualityBicubic mode



            g.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.HighQualityBicubic;



            g.DrawImage(img, x, y, w, h); // draw image with specified dimensions



            g.Flush(); // make sure all drawing operations complete before we get the icon



 



            // following line would work directly on any image, but then



            // it wouldn't look as nice.



            return Icon.FromHandle(square.GetHicon());



        }

+ نوشته شده در  جمعه یازدهم مرداد 1387ساعت 15:9  توسط گروه نرم افزاری قو  |  آرشیو نظرات

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public Image Resize(Image img, int percentage)



        {



            //get the height and width of the image



            int originalW = img.Width;



            int originalH = img.Height;



 



            //get the new size based on the percentage change



            int resizedW = (int)(originalW * percentage);



            int resizedH = (int)(originalH * percentage);



 



            //create a new Bitmap the size of the new image



            Bitmap bmp = new Bitmap(resizedW, resizedH);



            //create a new graphic from the Bitmap



            Graphics graphic = Graphics.FromImage((Image)bmp);



            graphic.InterpolationMode = InterpolationMode.HighQualityBicubic;



            //draw the newly resized image



            graphic.DrawImage(img, 0, 0, resizedW, resizedH);



            //dispose and free up the resources



            graphic.Dispose();



            //return the image



            return (Image)bmp;



        }