I try to get a group inside a scroll and inside the group I have for smaller
groups. All have their own drawing routines.
If I resize the outer window and scroll, the drawing is totally corrupted, a
lot of pixels are missing.
Can someone explain how to handle scroll/draw in a correct way?
----
#include <iostream>
using namespace std;
#include <FL/Fl.H>
#include <FL/Fl_Window.H>
#include <FL/Fl_Double_Window.H>
#include <FL/Fl_Button.H>
#include <FL/Fl.H>
#include <FL/Fl_Scroll.H>
#include <FL/fl_draw.H>
#include <FL/Fl_Group.H>
#include <FL/Fl_Menu_Bar.H>
static const unsigned int MENU_HEIGHT= 25;
class MyBox: public Fl_Group
{
private:
string name;
public:
MyBox( int x, int y, int w, int h, string _name):
Fl_Group( x,y,w,h ),
name(_name)
{}
void draw()
{
cout << "Draw name " << name << endl;
cout << "Position " << x() << " " << y() << endl;
cout << "Size " << w() << " " << h() << endl;
fl_color(fl_rgb_color(0,0,0));
fl_line(x() ,y(), x()+w(), y()+h() );
fl_line(x() ,y()+h(), x()+w(), y() );
Fl_Group::draw();
cout << "End draw" << endl;
}
void resize(int x, int y, int w, int h)
{
cout << "resize called for " << name << " " << x << " " << y << "
" << w << " " << h << endl;
Fl_Group::resize(x,y,w,h);
}
};
void Do(Fl_Widget*, void* obj) { } // dummy only
int main()
{
Fl_Double_Window win(400,400, "Test1");
Fl_Menu_Bar menubar(0,0, 400, MENU_HEIGHT);
Fl_Scroll scroll(0,MENU_HEIGHT,400,400-MENU_HEIGHT);
menubar.add( "Hallo",0, Do,(void*)&win);
MyBox box(0, MENU_HEIGHT, 400, 400-MENU_HEIGHT, "master");
MyBox littleBox00( 0, MENU_HEIGHT, 50,50, "sub00");
MyBox littleBox01( 0, MENU_HEIGHT+50, 50,50, "sub01");
MyBox littleBox10( 50, MENU_HEIGHT, 50,50, "sub10");
MyBox littleBox11( 50, MENU_HEIGHT+50, 50,50, "sub11");
scroll.end();
win.end();
win.resizable(box);
win.show();
return Fl::run();
}
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