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;
public:
HelloWorld& Text(const String& t) { text = t; Refresh(); return *this; }
HelloWorld();
};
HelloWorld::HelloWorld()
{
SetTimeCallback(-40, [=] { Refresh(); });
BackPaint();
Zoomable().Sizeable();
SetRect(0, 0, 1000, 300);
}
void HelloWorld::LeftDown(Point, dword)
{
EditText(text, "Text to display", "Text");
}
void HelloWorld::Paint(Draw& w)
{
Font fnt = Roman(64);
Size sz = GetSize();
w.DrawRect(sz, White);
Size tsz = GetTextSize(text, fnt);
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(GetTickCount() / 100.0 + i / 2.0) * (sz.cy - fnt.GetCy()) / 4,
~text + i, fnt, HsvColorf(q / 15.0, 1, 0.5), 1);
pos.x += fnt[text[i]];
}
}
GUI_APP_MAIN
{
HelloWorld hw;
hw.Title("Hello world example");
hw.Text(Nvl(Join(CommandLine(), " "), "Hello world !"));
hw.Run();
}
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