#include <extrafiltersplugin.h>
Inheritance diagram for ExtraFiltersPlugin:
Definition at line 33 of file extrafiltersplugin.h.
Public Member Functions | |
| QStringList | filters () const |
| QImage | filterImage (const QString &filter, const QImage &image, QWidget *parent) |
| QStringList ExtraFiltersPlugin::filters | ( | ) | const [virtual] |
Implements FilterInterface.
Definition at line 31 of file extrafiltersplugin.cpp.
00032 { 00033 return QStringList() << tr("Flip Horizontally") << tr("Flip Vertically") 00034 << tr("Smudge...") << tr("Threshold..."); 00035 }
| QImage ExtraFiltersPlugin::filterImage | ( | const QString & | filter, | |
| const QImage & | image, | |||
| QWidget * | parent | |||
| ) | [virtual] |
Implements FilterInterface.
Definition at line 37 of file extrafiltersplugin.cpp.
References alpha, Qt::blue, QImage::Format_RGB32, QInputDialog::getInteger(), green, QImage::height(), i, image, QObject::parent(), QImage::pixel(), qAlpha(), qBlue(), qGreen(), qRed(), qRgba(), red, QImage::setPixel(), QImage::width(), x, and y.
00039 { 00040 QImage original = image.convertToFormat(QImage::Format_RGB32); 00041 QImage result = original; 00042 00043 if (filter == tr("Flip Horizontally")) { 00044 for (int y = 0; y < original.height(); ++y) { 00045 for (int x = 0; x < original.width(); ++x) { 00046 int pixel = original.pixel(original.width() - x - 1, y); 00047 result.setPixel(x, y, pixel); 00048 } 00049 } 00050 } else if (filter == tr("Flip Vertically")) { 00051 for (int y = 0; y < original.height(); ++y) { 00052 for (int x = 0; x < original.width(); ++x) { 00053 int pixel = original.pixel(x, original.height() - y - 1); 00054 result.setPixel(x, y, pixel); 00055 } 00056 } 00057 } else if (filter == tr("Smudge...")) { 00058 bool ok; 00059 int numIters = QInputDialog::getInteger(parent, tr("Smudge Filter"), 00060 tr("Enter number of iterations:"), 00061 5, 1, 20, 1, &ok); 00062 if (ok) { 00063 for (int i = 0; i < numIters; ++i) { 00064 for (int y = 1; y < original.height() - 1; ++y) { 00065 for (int x = 1; x < original.width() - 1; ++x) { 00066 int p1 = original.pixel(x, y); 00067 int p2 = original.pixel(x, y + 1); 00068 int p3 = original.pixel(x, y - 1); 00069 int p4 = original.pixel(x + 1, y); 00070 int p5 = original.pixel(x - 1, y); 00071 00072 int red = (qRed(p1) + qRed(p2) + qRed(p3) + qRed(p4) 00073 + qRed(p5)) / 5; 00074 int green = (qGreen(p1) + qGreen(p2) + qGreen(p3) 00075 + qGreen(p4) + qGreen(p5)) / 5; 00076 int blue = (qBlue(p1) + qBlue(p2) + qBlue(p3) 00077 + qBlue(p4) + qBlue(p5)) / 5; 00078 int alpha = (qAlpha(p1) + qAlpha(p2) + qAlpha(p3) 00079 + qAlpha(p4) + qAlpha(p5)) / 5; 00080 00081 result.setPixel(x, y, qRgba(red, green, blue, alpha)); 00082 } 00083 } 00084 } 00085 } 00086 } else if (filter == tr("Threshold...")) { 00087 bool ok; 00088 int threshold = QInputDialog::getInteger(parent, tr("Threshold Filter"), 00089 tr("Enter threshold:"), 00090 10, 1, 256, 1, &ok); 00091 if (ok) { 00092 int factor = 256 / threshold; 00093 for (int y = 0; y < original.height(); ++y) { 00094 for (int x = 0; x < original.width(); ++x) { 00095 int pixel = original.pixel(x, y); 00096 result.setPixel(x, y, qRgba(qRed(pixel) / factor * factor, 00097 qGreen(pixel) / factor * factor, 00098 qBlue(pixel) / factor * factor, 00099 qAlpha(pixel))); 00100 } 00101 } 00102 } 00103 } 00104 return result; 00105 }
Here is the call graph for this function:
1.5.1