AnimatedHello
Animated Hello world example
This is "enhanced version" of Hello world example - text is colored and animated.
Hello.cpp
// This is Upp conversion of Qt example, see
// http://doc.trolltech.com/3.0/hello-example.html
#include <CtrlLib/CtrlLib.h>
using namespace Upp;
class HelloWorld : public TopWindow {
public:
virtual void LeftDown(Point, dword);
virtual void Paint(Draw& w);
private:
String text;
void Animate() { Refresh(); }
public:
typedef HelloWorld CLASSNAME;
HelloWorld& Text(const String& t) { text = t; Refresh(); return *this; }
HelloWorld();
};
HelloWorld::HelloWorld()
{
SetTimeCallback(-40, THISBACK(Animate));
BackPaint();
Zoomable().Sizeable();
SetRect(0, 0, 260, 80);
}
void HelloWorld::LeftDown(Point, dword)
{
Close();
}
void HelloWorld::Paint(Draw& w)
{
Size sz = GetSize();
static int sin_tbl[16] = {
0, 38, 71, 92, 100, 92, 71, 38, 0, -38, -71, -92, -100, -92, -71, -38
};
w.DrawRect(sz, White);
Size tsz = GetTextSize(text, Roman(32));
Point pos = (sz - tsz) / 2;
for(int i = 0; i < text.GetLength(); i++) {
int q = (i + GetTickCount() / 40) & 15;
w.DrawText(pos.x, pos.y + sin_tbl[q] * (sz.cy - 32) / 200,
~text + i, Roman(32), HsvColorf(q / 15.0, 1, 0.5), 1);
pos.x += Roman(32).Info()[text[i]];
}
}
GUI_APP_MAIN
{
HelloWorld hw;
hw.Title("Hello world example");
hw.Text(Nvl(Join(CommandLine(), " "), "Hello world !"));
hw.Run();
}
|