tool/Unit1.pas

   1 unit Unit1;
   2
   3 interface
   4
   5 uses
   6   System.SysUtils, System.Types, System.UITypes, System.Classes,
   7   System.Variants,
   8   FMX.Types, FMX.Controls, FMX.Forms, FMX.Dialogs, FMX.Ani, FMX.Layouts,
   9   FMX.Gestures, FMX.Graphics, FMX.Surfaces,
  10   FireDAC.Stan.Intf, FireDAC.Stan.Option, FireDAC.Stan.Param,
  11   FireDAC.Stan.Error, FireDAC.DatS, FireDAC.Phys.Intf, FireDAC.DApt.Intf,
  12   FireDAC.Stan.Async, FireDAC.DApt, FireDAC.UI.Intf, FireDAC.Stan.Def,
  13   FireDAC.Stan.Pool, FireDAC.Phys, FireDAC.Phys.MySQL, FireDAC.Phys.MySQLDef,
  14   Data.Bind.Controls, Data.Bind.EngExt, FMX.Bind.DBEngExt, System.Rtti,
  15   System.Bindings.Outputs, FMX.Bind.Editors, Data.Bind.Components, Data.DB,
  16   FMX.Controls.Presentation, FMX.Edit, FMX.Bind.Navigator, Data.Bind.DBScope,
  17   FireDAC.Comp.Client, FireDAC.Comp.DataSet, FMX.Objects, FMX.StdCtrls,
  18   FireDAC.FMXUI.Wait, FireDAC.Comp.UI, FireDAC.Comp.BatchMove;
  19
  20 type
  21   TForm2 = class(TForm)
  22     Image1: TImage;
  23     FDTable1: TFDTable;
  24     FDConnection1: TFDConnection;
  25     Edit1: TEdit;
  26     BindingsList1: TBindingsList;
  27     FDGUIxWaitCursor1: TFDGUIxWaitCursor;
  28     BindSourceDB1: TBindSourceDB;
  29     NavigatorBindSourceDB12: TBindNavigator;
  30     LinkControlToField1: TLinkControlToField;
  31     Button1: TButton;
  32     OpenDialog1: TOpenDialog;
  33     Label1: TLabel;
  34     LinkPropertyToFieldText: TLinkPropertyToField;
  35     LinkPropertyToFieldBitmap: TLinkPropertyToField;
  36     FDQuery1: TFDQuery;
  37     Button2: TButton;
  38     FDBatchMove1: TFDBatchMove;
  39     procedure Button1Click(Sender: TObject);
  40     procedure FormCreate(Sender: TObject);
  41     procedure Button2Click(Sender: TObject);
  42   private
  43     { private \90é\8c¾ }
  44     procedure streamToField(stream, field: TStream);
  45   public
  46     { public \90é\8c¾ }
  47   end;
  48
  49 var
  50   Form2: TForm2;
  51
  52 implementation
  53
  54 {$R *.fmx}
  55
  56 procedure TForm2.Button1Click(Sender: TObject);
  57 var
  58   s: TStream;
  59   t: TMemoryStream;
  60 begin
  61   if OpenDialog1.Execute = true then
  62   begin
  63     FDTable1.Edit;
  64     s := FDTable1.CreateBlobStream(FDTable1.FieldByName('source'), bmWrite);
  65     t := TMemoryStream.Create;
  66     try
  67       t.LoadFromFile(OpenDialog1.FileName);
  68       streamToField(t, s);
  69       FDTable1.Post;
  70     finally
  71       s.Free;
  72       t.Free;
  73     end;
  74   end;
  75 end;
  76
  77 procedure TForm2.Button2Click(Sender: TObject);
  78 begin
  79   with FDQuery1.SQL do
  80   begin
  81     Clear;
  82     Add('drop table images;');
  83     Add('create table images(id int primary key, name varchar(10), source mediumblob);');
  84   end;
  85   FormCreate(Sender);
  86 end;
  87
  88 procedure TForm2.FormCreate(Sender: TObject);
  89 var
  90   i: Integer;
  91   s, t: TStream;
  92 begin
  93   FDQuery1.ExecSQL;
  94   FDTable1.Open;
  95   if FDTable1.RecordCount = 0 then
  96   begin
  97     for i := 1 to 50 do
  98       FDTable1.AppendRecord([i, Format('slide%d.jpg', [i]), nil]);
  99     FDTable1.First;
 100     for i := 1 to 10 do
 101     begin
 102       FDTable1.Edit;
 103       s := FDTable1.CreateBlobStream(FDTable1.FieldByName('source'), bmWrite);
 104       t := TResourceStream.Create(HInstance, Format('Resource_%d', [i]),
 105         RT_RCDATA);
 106       try
 107         streamToField(t,s);
 108         FDTable1.Post;
 109       finally
 110         s.Free;
 111       end;
 112       FDTable1.Next;
 113     end;
 114   end;
 115   FDTable1.First;
 116 end;
 117
 118 procedure TForm2.streamToField(stream, field: TStream);
 119 var
 120   bmp: TBitmapSurface;
 121   pm: TBitmapCodecSaveParams;
 122   img: TBitmap;
 123 begin
 124   pm.Quality := 100;
 125   bmp := TBitmapSurface.Create;
 126   img:=TBitmap.Create;
 127   try
 128     img.LoadFromStream(stream);
 129     bmp.Assign(img);
 130     TBitmapCodecManager.SaveToStream(field, bmp, '.jpg', @pm);
 131   finally
 132     bmp.Free;
 133     img.Free;
 134   end;
 135 end;
 136
 137 end.