mirror of
https://github.com/riuson/lcd-image-converter.git
synced 2026-03-22 16:06:59 +01:00
92 lines
3.0 KiB
C++
92 lines
3.0 KiB
C++
#include "bitmaphelper.h"
|
|
//-----------------------------------------------------------------------------
|
|
#include <QPainter>
|
|
//-----------------------------------------------------------------------------
|
|
QImage BitmapHelper::transform(BitmapHelperTransformCodes type, QImage *source)
|
|
{
|
|
QImage result(*source);
|
|
switch (type)
|
|
{
|
|
case Rotate90:
|
|
result = rotate90(source);
|
|
break;
|
|
case Rotate180:
|
|
result = rotate180(source);
|
|
break;
|
|
case Rotate270:
|
|
result = rotate270(source);
|
|
break;
|
|
case FlipHorizontal:
|
|
result = flipHorizontal(source);
|
|
break;
|
|
case FlipVertical:
|
|
result = flipVertical(source);
|
|
break;
|
|
case Inverse:
|
|
result.invertPixels();
|
|
break;
|
|
}
|
|
return result;
|
|
}
|
|
//-----------------------------------------------------------------------------
|
|
QImage BitmapHelper::rotate90(QImage *source)
|
|
{
|
|
QImage result = QImage(source->height(), source->width(), source->format());
|
|
QPainter painter(&result);
|
|
painter.translate(QPoint(result.width(), 0));
|
|
painter.rotate(90);
|
|
painter.drawImage(0, 0, *source);
|
|
return result;
|
|
}
|
|
//-----------------------------------------------------------------------------
|
|
QImage BitmapHelper::rotate180(QImage *source)
|
|
{
|
|
QImage result = QImage(source->width(), source->height(), source->format());
|
|
QPainter painter(&result);
|
|
painter.translate(QPoint(result.width(), result.height()));
|
|
painter.rotate(180);
|
|
painter.drawImage(0, 0, *source);
|
|
return result;
|
|
}
|
|
//-----------------------------------------------------------------------------
|
|
QImage BitmapHelper::rotate270(QImage *source)
|
|
{
|
|
QImage result = QImage(source->height(), source->width(), source->format());
|
|
QPainter painter(&result);
|
|
painter.translate(QPoint(0, result.height()));
|
|
painter.rotate(270);
|
|
painter.drawImage(0, 0, *source);
|
|
return result;
|
|
}
|
|
//-----------------------------------------------------------------------------
|
|
QImage BitmapHelper::flipHorizontal(QImage *source)
|
|
{
|
|
QImage result = source->mirrored(true, false);
|
|
return result;
|
|
}
|
|
//-----------------------------------------------------------------------------
|
|
QImage BitmapHelper::flipVertical(QImage *source)
|
|
{
|
|
QImage result = source->mirrored(false, true);
|
|
return result;
|
|
}
|
|
//-----------------------------------------------------------------------------
|
|
QImage BitmapHelper::resize(QImage *source, int width, int height, int offsetX, int offsetY, bool center, const QColor &backColor)
|
|
{
|
|
QImage result = QImage(width, height, source->format());
|
|
QPainter painter(&result);
|
|
painter.fillRect(0, 0, width, height, backColor);
|
|
if (!center)
|
|
painter.drawImage(offsetX, offsetY, *source);
|
|
else
|
|
{
|
|
int centerX = width / 2;
|
|
int centerY = height / 2;
|
|
offsetX = centerX - source->width() / 2;
|
|
offsetY = centerY - source->height() / 2;
|
|
painter.drawImage(offsetX, offsetY, *source);
|
|
}
|
|
return result;
|
|
}
|
|
//-----------------------------------------------------------------------------
|