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CMStatus.pas
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224 lines (194 loc) · 6.51 KB
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unit CMStatus;
interface
uses windows, graphics, classes, sysutils;
type
PStatusMessage = ^TStatusMessage;
TStatusMessage = record
Nome: shortstring;
Menssage: shortstring;
Tempo: cardinal;
Decorrido: cardinal;
Cor: TColor;
Emergencia: Boolean;
RunTimes: cardinal;
Efeito: Boolean;
TickHelper: Cardinal;
end;
type
TMessageList = Class
constructor Create;
private
fList: TList;
fIndex: integer;
fLast: integer;
fEmergency: boolean;
public
Function CurrentMessage: TStatusMessage;
Procedure Add(Nome: AnsiString = ' '; Msg: AnsiString = ' '; Delay: Cardinal = 5000;
RunTimes: integer = 1; Cor: TColor = clBlack; Piscar: Boolean = false; Emergencia: Boolean = false);
Procedure Delete(Nome: AnsiString);
Function GetFreeName: AnsiString;
Function Tick(qnt: integer = 1): boolean;
Procedure IncHelper(qnt: integer = 1);
Function Next: TStatusMessage;
Function Empty: Boolean;
end;
implementation
{ **************************** TMessageList **********************************}
{ *********************** Mensagens para o Status ****************************}
{-----------------------------------------------------------------------------}
// Adiciona Mensagem na Liosta de Espera para o Status
{-----------------------------------------------------------------------------}
procedure TMessageList.Add(Nome: AnsiString = ' '; Msg: AnsiString = ' '; Delay: Cardinal = 5000;
RunTimes: integer = 1; Cor: TColor = clBlack; Piscar: Boolean = false; Emergencia: Boolean = false);
var
P: PStatusMessage;
begin
P := New(PStatusMessage);
P^.Nome := Nome;
P^.Tempo := Delay;
P^.Menssage := Msg;
P^.Cor := Cor;
P^.Emergencia := Emergencia;
P^.RunTimes := RunTimes;
P^.Efeito := Piscar;
fList.Add(p);
end;
{-----------------------------------------------------------------------------}
// Cria Lista de Espera
{-----------------------------------------------------------------------------}
constructor TMessageList.Create;
begin
fList := TList.Create;
end;
{-----------------------------------------------------------------------------}
// Mensagem Atual
{-----------------------------------------------------------------------------}
function TMessageList.CurrentMessage: TStatusMessage;
begin
Result := TStatusMessage(fList.Items[fIndex]^);
end;
{-----------------------------------------------------------------------------}
// Retira Mensagem da Lista
{-----------------------------------------------------------------------------}
procedure TMessageList.Delete(Nome: AnsiString);
var i:integer;
begin
for i:=0 to fList.Count-1 do
begin
if LowerCase(trim(TStatusMessage(fList.Items[i]^).Nome)) = LowerCase(trim(Nome)) then
begin
fList.Delete(i);
exit;
end;
end;
end;
{-----------------------------------------------------------------------------}
// Verifica se a lista de espera do Status está vazia
{-----------------------------------------------------------------------------}
function TMessageList.Empty: Boolean;
begin
Result := fList.Count = 0;
end;
{-----------------------------------------------------------------------------}
// Incrementa o campo Helper (para efeito vaga-lume)
{-----------------------------------------------------------------------------}
function TMessageList.GetFreeName: AnsiString;
var i,j:integer;
Flag: boolean;
Nome: AnsiString;
begin
j := 0;
Flag := true;
while flag do
begin
flag := false;
Nome := 'Mensagem'+IntToStr(j);
for i:=0 to fList.Count-1 do
begin
if LowerCase(trim(TStatusMessage(fList.Items[i]^).Nome)) = LowerCase(trim(Nome)) then
begin
flag := true;
end;
end;
inc(j);
end;
result := nome;
end;
procedure TMessageList.IncHelper(qnt: integer);
begin
TStatusMessage(fList.Items[fIndex]^).TickHelper := TStatusMessage(fList.Items[fIndex]^).TickHelper + qnt;
end;
function TMessageList.Next: TStatusMessage;
var i:integer;
ExisteEmergencia: boolean;
begin
TStatusMessage(fList.Items[fIndex]^).Decorrido := 0;
TStatusMessage(fList.Items[fIndex]^).TickHelper := 0;
//se o numero de amostragens atual for maior que zero ela não é infinita
if TStatusMessage(fList.Items[fIndex]^).RunTimes > 0 then
begin
//Decrementa o numero de amostragens da mensagem atual
dec(TStatusMessage(fList.Items[fIndex]^).RunTimes);
//Se apos decrementar o numero de amostragens, este for 0, remove da lista
if TStatusMessage(fList.Items[fIndex]^).RunTimes = 0 then
begin
fList.Delete(fIndex);
//inc(fIndex);
if fIndex+1 >= fList.Count then
begin
fIndex := 0;
if fList.Count > 0 then
result := TStatusMessage(fList.Items[fIndex]^);
exit;
end;
end;
end;
//Se for emergencia salva a posição atual e Fura a Fila de mensagens
ExisteEmergencia := false;
for i := 0 to fList.Count-1 do
begin
if TStatusMessage(fList.Items[i]^).Emergencia then
begin
ExisteEmergencia := true;
//se houver uma emergencia e a ultima msg não tiver sido uma,
//salva a posição da fila de mensagens
if not fEmergency then
fLast := fIndex;
findex := i;
break;
end;
end;
//Se não houver emergencias na lista
if not ExisteEmergencia then
begin
//se ja tiver havido uma emergencia na ultima mostrada
if fEmergency then
begin
fEmergency := false;
fIndex := fLast;
end else // senão incrementa a posição na fila
inc(fIndex);
end;
if fIndex >= fList.Count then
begin
fIndex := 0;
if fList.Count > 0 then
result := TStatusMessage(fList.Items[fIndex]^);
exit;
end;
Result := TStatusMessage(fList.Items[fIndex]^);
end;
{-----------------------------------------------------------------------------}
// Incrementa o Tempo de Amostragem
{-----------------------------------------------------------------------------}
Function TMessageList.Tick(qnt: integer = 1): boolean;
begin
if TStatusMessage(fList.Items[fIndex]^).Decorrido >= TStatusMessage(fList.Items[fIndex]^).Tempo then
result := false
else begin
inc(TStatusMessage(fList.Items[fIndex]^).Decorrido,qnt);
result := true;
end;
end;
end.