| 1 | /* compile with
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| 2 | moc webkit-image.cpp >webkit-image.h
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| 3 | g++ webkit-image.cpp -o webkit-image -lQtCore -lQtWebKit -lQtGui
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| 4 | */
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| 5 |
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| 6 | #include <QtGui/QApplication>
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| 7 | #include <QtCore/QFile>
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| 8 | #include <QtCore/QString>
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| 9 | #include <QtCore/QDebug>
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| 10 | #include <QtWebKit/QWebView>
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| 11 |
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| 12 | /* using mingw to set binary mode */
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| 13 | #ifdef WIN32
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| 14 | #include <io.h>
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| 15 | #include <fcntl.h>
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| 16 | #define BINARYSTDOUT setmode(fileno(stdout), O_BINARY);
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| 17 | #else
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| 18 | #define BINARYSTDOUT
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| 19 | #endif
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| 20 |
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| 21 | #define WIDTH 2000
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| 22 |
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| 23 | class Save : public QObject
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| 24 | {
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| 25 | Q_OBJECT
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| 26 | public:
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| 27 | Save(QWebView *v) : view(v) {};
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| 28 |
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| 29 | public slots:
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| 30 | void loaded(bool ok)
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| 31 | {
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| 32 | if(ok)
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| 33 | {
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| 34 | QImage im = QPixmap::grabWidget(view).toImage();
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| 35 | QRgb white = QColor(255,255,255).rgb();
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| 36 |
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| 37 | /* didn't find a way to reduce image directly, so we scan for white background */
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| 38 | bool iswhite = true;
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| 39 | int xsize = WIDTH;
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| 40 | int ysize = WIDTH;
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| 41 | for(int x = xsize-1; iswhite && x > 0; --x)
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| 42 | {
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| 43 | for(int y = 0; iswhite && y < ysize; ++y)
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| 44 | {
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| 45 | if(im.pixel(x, y) != white)
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| 46 | iswhite = false;
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| 47 | }
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| 48 | if(iswhite)
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| 49 | xsize = x;
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| 50 | }
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| 51 | iswhite = true;
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| 52 | for(int y = ysize-1; iswhite && y > 0; --y)
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| 53 | {
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| 54 | for(int x = 0; iswhite && x < xsize; ++x)
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| 55 | {
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| 56 | if(im.pixel(x, y) != white)
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| 57 | iswhite = false;
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| 58 | }
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| 59 | if(iswhite)
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| 60 | ysize = y;
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| 61 | }
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| 62 | /* didn't find a way to clip the QImage directly, so we reload it */
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| 63 | QPixmap p = QPixmap::grabWidget(view, 0,0,xsize,ysize);
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| 64 | QFile f;
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| 65 | BINARYSTDOUT
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| 66 | if(f.open(stdout, QIODevice::WriteOnly|QIODevice::Unbuffered))
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| 67 | p.save(&f, "PNG");
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| 68 | }
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| 69 | emit finish();
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| 70 | }
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| 71 | signals:
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| 72 | void finish(void);
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| 73 |
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| 74 | private:
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| 75 | QWebView *view;
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| 76 | };
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| 77 |
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| 78 | #include "webkit-image.h"
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| 79 |
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| 80 | int main(int argc, char **argv)
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| 81 | {
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| 82 | if(argc != 2)
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| 83 | return 20;
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| 84 | QString url = QString(argv[1]);
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| 85 |
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| 86 | QApplication a( argc, argv );
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| 87 | QWebView *view = new QWebView();
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| 88 | Save *s = new Save(view);
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| 89 |
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| 90 | QObject::connect(view, SIGNAL(loadFinished(bool)), s, SLOT(loaded(bool)));
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| 91 | QObject::connect(s, SIGNAL(finish(void)), &a, SLOT(quit()));
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| 92 | view->resize(WIDTH,WIDTH);
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| 93 | view->load(QUrl(url));
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| 94 | return a.exec();
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| 95 | }
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