Could you help me to fill the callback with the necessary functionality to
print the squares to a gif/png/jpg file (whatever is easiest)?
#include <stdio.h>
#include <FL/Fl.H>
#include <FL/fl_draw.H>
#include <FL/Fl_Button.H>
#include <FL/Fl_Double_Window.H>
class Draw : public Fl_Widget {
private:
int color_;
public:
Draw(int x, int y, int w, int h, const char *l=0, int c=FL_BLACK) :
Fl_Widget(x, y ,w ,h, l) {
color_ = c;
}
void draw() {
fl_color(color_);
fl_rectf(x(), y(), w(), h());
}
};
static void printimage_cb(Fl_Widget *w) {
printf("Printing image...\n"); // print squares above to
// .gif/.jpg/.pnm/.png file,
// whatever is easiest
}
int main() {
Fl_Double_Window win(200, 60, "draw");
Draw* draw;
draw = new Draw(10,10,10,10,NULL,FL_WHITE);
draw = new Draw(30,10,10,10,NULL,FL_GREEN);
draw = new Draw(50,10,10,10,NULL,FL_BLUE);
draw = new Draw(70,10,10,10,NULL,FL_RED);
Fl_Button printimage(10, 30, 100, 25, "Print Image!");
printimage.callback(printimage_cb);
win.show();
return(Fl::run());
}
Regards,
Jens
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