Вот кусок примерчика из демки фтп-клиента (замени idFtp1 на idHTTP1 и объяви переменные):
| Код |
procedure TMainForm.IdFTP1Work(Sender: TObject; AWorkMode: TWorkMode;
const AWorkCount: Integer);
Var
S: String;
TotalTime: TDateTime;
// RemainingTime: TDateTime;
H, M, Sec, MS: Word;
DLTime: Double;
begin
TotalTime := Now - STime;
DecodeTime(TotalTime, H, M, Sec, MS);
Sec := Sec + M * 60 + H * 3600;
DLTime := Sec + MS / 1000;
if DLTime > 0 then
AverageSpeed := {(AverageSpeed + }(AWorkCount / 1024) / DLTime{) / 2};
if AverageSpeed > 0 then begin
Sec := Trunc(((ProgressBar1.Max - AWorkCount) / 1024) / AverageSpeed);
S := Format('%2d:%2d:%2d', [Sec div 3600, (Sec div 60) mod 60, Sec mod 60]);
S := 'Time remaining ' + S;
end
else S := '';
S := FormatFloat('0.00 KB/s', AverageSpeed) + '; ' + S;
case AWorkMode of
wmRead: StatusBar1.Panels[1].Text := 'Download speed ' + S;
wmWrite: StatusBar1.Panels[1].Text := 'Uploade speed ' + S;
end;
ProgressBar1.Position := AWorkCount;
AbortTransfer := false;
end;
procedure TMainForm.IdFTP1WorkBegin(Sender: TObject; AWorkMode: TWorkMode;
const AWorkCountMax: Integer);
begin
TransferrignData := true;
STime := Now;
if AWorkCountMax > 0 then ProgressBar1.Max := AWorkCountMax
else ProgressBar1.Max := BytesToTransfer;
AverageSpeed := 0;
end;
procedure TMainForm.IdFTP1WorkEnd(Sender: TObject; AWorkMode: TWorkMode);
begin
StatusBar1.Panels[1].Text := 'Transfer complete.';
BytesToTransfer := 0;
TransferrignData := false;
ProgressBar1.Position := 0;
AverageSpeed := 0;
end;
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