void composeKeyPressed(char c, bool& exitFlag)
{
switch(c)
{
case 'q':
printf("quit compose program...\n");
exitFlag = true;
break;
case 'a':
printf("move left ...\n");
if(y >= 10)
y -= 10;
break;
case 'd':
printf("move right ...\n");
if(y < backImg.cols - 10)
y += 10;
break;
case 'w':
printf("move top ...\n");
if(x >= 10)
x -= 10;
break;
case 's':
printf("move down ...\n");
if(x < backImg.rows - 10)
x += 10;
break;
case 'e':
printf("zoom ...\n");
alpha += delta;
if(!zoomImage(foreImg, alpha))
alpha -= delta;
break;
case 'r':
printf("shrink ...\n");
alpha -= delta;
if(!zoomImage(foreImg, alpha))
alpha += delta;
break;
case 'c':
printf("save ...\n");
saveFlag = true;
break;
default:
break;
}
}
void WinImage::slotZoom()
{
double scale = _a_number->value();
scale = (scale==0) ? 1 : 1 / scale;
_image = zoomImage(_image, scale, 0);
update();
QString message = "Zoom scale: " + QString::number( _a_number->value());
statusBar()->showMessage( message);
}
