#include <TChain.h>
#include <TCanvas.h>
#include <TPaveText.h>

void dstar_dm() {
    TChain *chain = new TChain("Dstar");

    // Add input files to the chain
    chain->Add("/home/g_vikas_raj/Downloads/root/SVD/splots/new_ccbar_Dstar.root");
    chain->Add("/home/g_vikas_raj/Downloads/root/SVD/splots/new_ddbar_Dstar.root");
    chain->Add("/home/g_vikas_raj/Downloads/root/SVD/splots/new_ssbar_Dstar.root");
    chain->Add("/home/g_vikas_raj/Downloads/root/SVD/splots/new_uubar_Dstar.root");
    chain->Add("/home/g_vikas_raj/Downloads/root/SVD/splots/new_mixed_Dstar.root");
    chain->Add("/home/g_vikas_raj/Downloads/root/SVD/splots/new_charged_Dstar.root");

    // Define default cut
    TCut cut = "D0_InvM > 1.85 && D0_InvM < 1.88 && InvM > 1.95 && InvM < 2.05 && (InvM-D0_InvM) >= 0.139545 && (InvM-D0_InvM) <= 0.151";

    // Create a canvas
    TCanvas *canvas = new TCanvas("canvas", "Canvas", 800, 600);

    // Create a TPaveText object for the title
    TPaveText *title = new TPaveText(0.1, 0.96, 0.9, 0.99, "NDC");
    title->AddText("My Custom Title");
    title->SetFillColor(0);
    title->SetTextSize(0.04);
    title->SetTextAlign(22);
    title->Draw();

    // Draw histogram with default cut
    chain->Draw("InvM-D0_InvM", cut);

    // Save canvas as PNG
    canvas->SaveAs("output_default.png");
}