Changeset 12 for trunk/Packages/Kernel

Timestamp:

Sep 6, 2017, 6:47:49 PM (7 years ago)

Author:

chronos

Message:

• Modified: Separate API command to be kernel and user space. Execute API command through single callback function.

Location:

trunk/Packages/Kernel

Files:

• UAPI.pas (modified) (9 diffs)
• UApp.pas (modified) (2 diffs)
• UKernel.pas (modified) (6 diffs)

trunk/Packages/Kernel/UAPI.pas

@@ -10 +10 @@
 
 type
-
-  { TAPI }
-
-  TAPI = class
+  TApiCommand = (acNone, acWriteText, acDrawText, acDrawLine, acDrawRect, acSleep,
+    acReadMessage, acWindowCreate, acWindowSetAttr);
+
+  TDrawTextParams = record
+    P: TPoint;
+    Text: string;
+    Color: TColor;
+  end;
+
+  TDrawLineParams = record
+    P1: TPoint;
+    P2: TPoint;
+    Color: TColor;
+  end;
+
+  TWindowSetAttrParams = record
+    Size: TPoint;
+    Visible: Boolean;
+  end;
+
+  TDrawRectParams = record
+    Rect: TRect;
+    Color: TColor;
+  end;
+
+  { TKernelApi }
+
+  TKernelApi = class
     Kernel: TObject; //TKernel;
+    function Call(Command: TApiCommand; Data: Pointer): Pointer;
     procedure WriteText(Text: string);
     procedure DrawText(P: TPoint; Text: string; Color: TColor);
@@ -22 +47 @@
     procedure ReadMessage(Message: TIPCMessage);
     function WindowCreate: Integer;
-    procedure WindowSetAttr(SizeX, SizeY: Integer; Visible: Boolean);
+    procedure WindowSetAttr(Size: TPoint; Visible: Boolean);
+  end;
+
+  TApiCall = function (Command: TApiCommand; Data: Pointer): Pointer of object;
+
+  { TUserApi }
+
+  TUserApi = class
+    KernelApiCallback: TApiCall;
+    function Call(Command: TApiCommand; Data: Pointer): Pointer;
+    procedure WriteText(Text: string);
+    procedure DrawText(P: TPoint; Text: string; Color: TColor);
+    procedure DrawLine(P1, P2: TPoint; Color: TColor);
+    procedure DrawRect(Rect: TRect; Color: TColor);
+    procedure Sleep(Time: TDateTime);
+    procedure ReadMessage(Message: TIPCMessage);
+    function WindowCreate: Integer;
+    procedure WindowSetAttr(Size: TPoint; Visible: Boolean);
   end;
 
@@ -31 +73 @@
   UKernel;
 
-{ TAPI }
-
-procedure TAPI.WriteText(Text: string);
+{ TUserApi }
+
+function TUserApi.Call(Command: TApiCommand; Data: Pointer
+  ): Pointer;
+begin
+  Result := KernelApiCallback(Command, Data);
+end;
+
+procedure TUserApi.WriteText(Text: string);
+begin
+  Call(acWriteText, Pointer(Text));
+end;
+
+procedure TUserApi.DrawText(P: TPoint; Text: string; Color: TColor);
+var
+  Params: TDrawTextParams;
+begin
+  Params.P := P;
+  Params.Text := Text;
+  Params.Color := Color;
+  Call(acDrawText, @Params);
+end;
+
+procedure TUserApi.DrawLine(P1, P2: TPoint; Color: TColor);
+var
+  Params: TDrawLineParams;
+begin
+  Params.P1 := P1;
+  Params.P2 := P2;
+  Params.Color := Color;
+  Call(acDrawLine, @Params);
+end;
+
+procedure TUserApi.DrawRect(Rect: TRect; Color: TColor);
+var
+  Params: TDrawRectParams;
+begin
+  Params.Rect := Rect;
+  Params.Color := Color;
+  Call(acDrawRect, @Params);
+end;
+
+procedure TUserApi.Sleep(Time: TDateTime);
+begin
+  Call(acSleep, @Time);
+end;
+
+procedure TUserApi.ReadMessage(Message: TIPCMessage);
+begin
+  Call(acReadMessage, Message);
+end;
+
+function TUserApi.WindowCreate: Integer;
+begin
+  Call(acWindowCreate, nil);
+end;
+
+procedure TUserApi.WindowSetAttr(Size: TPoint; Visible: Boolean);
+var
+  Params: TWindowSetAttrParams;
+begin
+  Params.Size := Size;
+  Params.Visible := Visible;
+  Call(acWindowSetAttr, @Params);
+end;
+
+{ TKernelApi }
+
+function TKernelApi.Call(Command: TApiCommand; Data: Pointer
+  ): Pointer;
+begin
+  case Command of
+    acDrawLine: DrawLine(TDrawLineParams(Data^).P1, TDrawLineParams(Data^).P2,
+      TDrawLineParams(Data^).Color);
+    acDrawRect: DrawRect(TDrawRectParams(Data^).Rect, TDrawRectParams(Data^).Color);
+    acDrawText: DrawText(TDrawTextParams(Data^).P, TDrawTextParams(Data^).Text,
+      TDrawTextParams(Data^).Color);
+    acSleep: Sleep(TDateTime(Data^));
+    acWindowCreate: Result := Pointer(WindowCreate);
+    acWindowSetAttr: WindowSetAttr(TWindowSetAttrParams(Data^).Size,
+      TWindowSetAttrParams(Data^).Visible);
+    acWriteText: WriteText(string(Data));
+    acReadMessage: ReadMessage(Data);
+  end;
+end;
+
+procedure TKernelApi.WriteText(Text: string);
 var
   Device: TDeviceSerial;
@@ -43 +169 @@
 end;
 
-procedure TAPI.DrawText(P: TPoint; Text: string; Color: TColor);
+procedure TKernelApi.DrawText(P: TPoint; Text: string; Color: TColor);
 var
   Screen: TScreen;
@@ -51 +177 @@
 end;
 
-procedure TAPI.DrawLine(P1, P2: TPoint; Color: TColor);
+procedure TKernelApi.DrawLine(P1, P2: TPoint; Color: TColor);
 var
   Screen: TScreen;
@@ -59 +185 @@
 end;
 
-procedure TAPI.DrawRect(Rect: TRect; Color: TColor);
+procedure TKernelApi.DrawRect(Rect: TRect; Color: TColor);
 var
   Screen: TScreen;
@@ -67 +193 @@
 end;
 
-procedure TAPI.Sleep(Time: TDateTime);
+procedure TKernelApi.Sleep(Time: TDateTime);
 var
   Task: TTask;
@@ -75 +201 @@
 end;
 
-procedure TAPI.ReadMessage(Message: TIPCMessage);
+procedure TKernelApi.ReadMessage(Message: TIPCMessage);
 var
   Task: TTask;
@@ -83 +209 @@
 end;
 
-function TAPI.WindowCreate: Integer;
-begin
-
-end;
-
-procedure TAPI.WindowSetAttr(SizeX, SizeY: Integer; Visible: Boolean);
+function TKernelApi.WindowCreate: Integer;
+begin
+
+end;
+
+procedure TKernelApi.WindowSetAttr(Size: TPoint; Visible: Boolean);
 begin
 

trunk/Packages/Kernel/UApp.pas

@@ -12 +12 @@
 
   TApp = class(TNamedObject)
-    API: TAPI;
+    API: TUserApi;
     Terminated: Boolean;
     constructor Create; virtual;
@@ -27 +27 @@
 begin
   inherited Create;
-  API := TAPI.Create;
+  API := TUserApi.Create;
 end;
 

trunk/Packages/Kernel/UKernel.pas

@@ -7 +7 @@
 uses
   Classes, Math, SysUtils, UList, Contnrs, UFileSystem, UMemory, UScreen, UDevice,
-  fgl, UApp, UScheduler;
+  fgl, UApp, UScheduler, UApi;
 
 type
@@ -26 +26 @@
   TKernel = class
   private
+    Api: TKernelApi;
     procedure InitVideo;
+    function KernelApiExecute(Command: TApiCommand; Data: Pointer): Pointer;
   public
     Apps: TNamedObjectList<TApp>;
@@ -88 +90 @@
 end;
 
+function TKernel.KernelApiExecute(Command: TApiCommand;
+  Data: Pointer): Pointer;
+begin
+  Result := Api.Call(Command, Data);
+end;
+
 procedure TKernel.AppExecute(AFile: TFile);
 var
@@ -94 +102 @@
   App := TApp(Apps.FindByName(AFile.Name));
   if Assigned(App) then begin
-    App.API.Kernel := Self;
+    App.API.KernelApiCallback := KernelApiExecute;
     Scheduler.AddTask(App.Name, App.Run);
   end else raise Exception.Create('Application ''' + AFile.Name + ''' no found');
@@ -119 +127 @@
   NewFile.Name := 'Clock2';
   NewDrive.FileSystem.TopDirectory.Items.Add(NewFile);
-InitVideo;
+  InitVideo;
 end;
 
@@ -149 +157 @@
   Scheduler := TScheduler.Create;
   Screens := TFPGObjectList<TScreen>.Create;
+  Api := TKernelApi.Create;
+  Api.Kernel := Self;
 end;
 
 destructor TKernel.Destroy;
 begin
-  Screens.Free;
-  Scheduler.Free;
-  Apps.Free;
-  Drives.Free;
-  Devices.Free;
+  FreeAndNil(Api);
+  FreeAndNil(Screens);
+  FreeAndNil(Scheduler);
+  FreeAndNil(Apps);
+  FreeAndNil(Drives);
+  FreeAndNil(Devices);
   inherited Destroy;
 end;