![]() I know I could have the image stay fine by using integer scaling, instead of float scaling, but I need the width to be 100% filled.Īlso, I know about an ImageView's Gravity.CENTER_CROP capability, however, that also uses integer scaling, so it cuts off the width of the image when it shouldn't. Is there a library out there or some better code that can do this better? I would like the image to look as crisp as possible, but I knew that my function wouldn't provide a great result. ![]() Transformation.postTranslate(xTranslation, yTranslation) Ĭanvas.drawBitmap(originalImage, transformation, null) Step 3: Input a numerical value for the width and/or height and press Enter. Try using the Standard menu size options to get the desired aspect ratio based on your original image size and maintain as much quality as possible. If you select a preset size to resize your image and it might affect the image quality, you’ll notice a warning banner appear. Step 2: Lock or unlock the aspect ratio and choose your units of measurement. Sizing down shouldn’t reduce image quality but sizing up can. Here is how I'm doing it: Bitmap background = Bitmap.createBitmap((int)width, (int)height, Config.ARGB_8888) įloat originalWidth = originalImage.getWidth(), originalHeight = originalImage.getHeight() įloat xTranslation = 0.0f, yTranslation = (height - originalHeight * scale)/2.0f Step 1: Click on your image with the Select Tool to select it. When you want to upload your images to a certain site, it may require you to resize your images to smaller sizes. I tried the other methods suggested and none of them look any better. Press the 'Resize Now' button to resize your image without losing quality. Resize your image by percentage or pixels. You can upload an image in JPEG, PNG, BMP or GIF format. I'm currently redrawing the bitmap myself by creating a Bitmap of all 0 alpha pixels and drawing the image Bitmap on top of it, scaling to the exact specified width and maintaining the aspect ratio, however, it ends up losing/screwing up the pixel data. Select an image from your computer or mobile device. Var vRatio = canvas.height / img.height Ĭtx.drawImage(img, 0,0, img.width, img.height, 0,0,img.width*ratio, img.I would like to scale a Bitmap to a runtime dependant width and height, where the aspect ratio is maintained and the Bitmap fills the entire width and centers the image vertically, either cropping the excess or filling in the gap with 0 alpha pixels. ![]() You made the error, for the second call, to set the size of source to the size of the target.Īnyway i bet that you want the same aspect ratio for the scaled image, so you need to compute it : var hRatio = canvas.width / img.width What am I missing here? Can anyone point me in the right direction please? I need to maintain that size to pass beck to the server when the form is submitted, but only want a smaller view of it to appear in the canvas for the user. So for the code above, the width and heights are 1142x856, as that is the final image size. I need the whole image 'scaled' to fit on the canvas, despite the actual image size being larger than the 320x240 canvas size. ![]() I only get part of the image on the canvas, in this case the top left corner. where canvas.width and canvas.height is the image height and width x a scaling factor based on the size of the original image.īut when I go to use the code: ctx.drawImage(img, 0, 0, canvas.width, canvas.height, 0, 0, canvas.width, canvas.height This code will render the scaled image on the canvas, with the canvas of size 320 x 240px: ctx.drawImage(img, 0, 0, canvas.width, canvas.height) To do this, we place it on the canvas and manipulate it there. Once the image is loaded, we perform some scaling on it in order to reduce its filesize before we pass it back to the server. I have a form that allows a user to upload an image.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |