there is a way for qt to image mosaicking?

[huifeidmeng]

hi , smart qter ! there is two picture a image & b image. and i got the image like c image . is a way for to get it ?
eg:
a image
bty1.png
b image
bty2.jpg
c image
2012033018123410.jpg

if there is a way , please tell me !
thks much for your kinds !

by
poor huifeidmeng

[d_stranz]

It is not clear at all what you are asking. Do you want to take two separate images and put them side-by-side in a single image? Do you want to take a side-by-side image and break it into two separate images? Look at the documentation for QImage.

[Vikram.Saralaya]

QImage aImage("aImg.png"); // say size = 40x40
QImage bImage("bImg.png"); // say size = 70x40

QImage aImage("aImg.png"); // say size = 40x40
QImage bImage("bImg.png"); // say size = 70x40

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To mosaick:
1. Create an image with the appropriate size.

QImage cImage(110, 40, QImage::Format_RGB32); // say size = 40x40

QImage cImage(110, 40, QImage::Format_RGB32); // say size = 40x40

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2. Read pixel data from aImage and bImage and store it in appropriate positions in cImage. This can be done by scanning line by line using QImage::scanLine().
Example, to copy 0th pixel of a specific row from bImage to cImage:

QRgb* bImgLine = (QRgb*)bImage.scanLine(row);
QRgb* cImgLine = (QRgb*)cImage.scanLine(row);
*(cImgLine+40) = *(bImgLine+0);

QRgb* bImgLine = (QRgb*)bImage.scanLine(row);
QRgb* cImgLine = (QRgb*)cImage.scanLine(row);
*(cImgLine+40) = *(bImgLine+0);

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[yeye_olive]

Example, to copy 0th pixel of a specific row from bImage to cImage:

QRgb* bImgLine = (QRgb*)bImage.scanLine(row);
QRgb* cImgLine = (QRgb*)cImage.scanLine(row);
*(cImgLine+40) = *(bImgLine+0);

QRgb* bImgLine = (QRgb*)bImage.scanLine(row);
QRgb* cImgLine = (QRgb*)cImage.scanLine(row);
*(cImgLine+40) = *(bImgLine+0);

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Be careful, your code assumes that bImage has the same format as cImage (QImage::Format_RGB32). You should convert bImage to that format first.