ScrollView
Scrolling the view area
main.cpp
#include <CtrlLib/CtrlLib.h>
using namespace Upp;
struct App : public TopWindow {
Point pos;
virtual void Paint(Draw &w)
{
Size sz = GetSize();
for(int i = pos.x / 50 - 50; (i * 50 - pos.y) < sz.cy; i++)
for(int j = pos.y / 50 - 50; (j * 50 - pos.x) < sz.cx; j++)
w.DrawRect(j * 50 - pos.x, i * 50 - pos.y, 50, 50,
Color(33 * j % 255, 11 * i % 255, 100));
}
virtual bool Key(dword key, int count)
{
if(key == K_SPACE) {
Size sz = GetSize();
Size delta(rand() % 50, rand() % 50);
pos += delta;
ScrollView(-delta);
}
return true;
}
App()
{
pos = Point(0, 0);
}
};
GUI_APP_MAIN
{
// Ctrl::ShowRepaint = 30;
App().Run();
}
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