CustomTitleBar
Demonstrates how to implement and use a custom title bar
main.cpp
#include <CtrlLib/CtrlLib.h>
using namespace Upp;
struct MyApp : TopWindow {
FrameTop<StaticRect> bararea; // we represent whole TitleBar area as frame
ParentCtrl barrect; // to do custom caption clipping
MenuBar menubar;
LineEdit editor;
Label title;
void MainMenu(Bar& bar)
{
bar.Sub("File", [=](Bar& bar) {
bar.Add("Exit", [=] { Break(); });
});
}
void SetMenuBar() {
menubar.Set([=](Bar& bar) {
MainMenu(bar);
});
}
bool IsCustomTitleBarDragArea(Point p) override
{ // identifies which titlebar areas can be clicked for dragging the window
p += GetScreenRect().TopLeft();
return !menubar.GetScreenRect().Contains(p);
}
MyApp() {
Sizeable().Zoomable();
Icon(CtrlImg::new_doc());
int h = menubar.GetStdHeight();
CustomTitleBar(h); // h is suggested minimum height
if(IsCustomTitleBar()) {
menubar.Transparent();
auto cm = GetCustomTitleBarMetrics();
bararea.Height(cm.height);
AddFrame(bararea);
bararea << barrect.VSizePos().HSizePos(cm.lm, cm.rm);
ImageBuffer m(1, 2);
m[0][0] = Blend(SWhite(), SLtCyan());
m[0][1] = Blend(SWhite(), SLtMagenta());
bararea.Background(Image(m)); // simple gradient
barrect << menubar;
SetMenuBar(); // run it here to get GetWidth
menubar.LeftPos(0, menubar.GetWidth()).TopPos((cm.height - h) / 2, h);
barrect << title.HSizePos(menubar.GetWidth(), cm.rm).VSizePos();
title.SetLabel("This is CustomTitleBar example");
title.AlignCenter();
title.AlignVCenter();
}
else { // if it is not supported
AddFrame(menubar);
SetMenuBar();
Title("This is CustomTitleBar example - CustomTitleBar not active");
}
Add(editor.SizePos());
};
};
GUI_APP_MAIN
{
MyApp().Run();
}
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