Changeset 467 for Common/UScaleDPI.pas

Timestamp:

Dec 4, 2014, 5:19:20 PM (10 years ago)

Author:

chronos

Message:

• Fixed: TScaleDPI can now also use lower DPI then original.
• Fixed: TScaleDPI DPI can be different for horizontal and vertical direction.
• Modified: Register TScaleDPI as design component to Common group.

File:

• Common/UScaleDPI.pas (modified) (6 diffs)

Common/UScaleDPI.pas

@@ -14 +14 @@
   { TScaleDPI }
 
-  TScaleDPI = class
+  TScaleDPI = class(TComponent)
   private
     FAutoDetect: Boolean;
@@ -27 +27 @@
     function ScaleX(Size: Integer; FromDPI: Integer): Integer;
     function ScaleY(Size: Integer; FromDPI: Integer): Integer;
-    constructor Create;
+    constructor Create(AOwner: TComponent);
+  published
     property AutoDetect: Boolean read FAutoDetect write SetAutoDetect;
   end;
 
+procedure Register;
 
 implementation
+
+procedure Register;
+begin
+  RegisterComponents('Common', [TScaleDPI]);
+end;
 
 procedure TScaleDPI.SetAutoDetect(AValue: Boolean);
@@ -59 +66 @@
   I: Integer;
 begin
-  if (DPI.X <= FromDPI.X * 1.1) or (DPI.Y <= FromDPI.Y * 1.1) then Exit;
-
   NewWidth := ScaleX(ImgList.Width, FromDPI.X);
   NewHeight := ScaleY(ImgList.Height, FromDPI.Y);
@@ -97 +102 @@
 function TScaleDPI.ScaleX(Size: Integer; FromDPI: Integer): Integer;
 begin
-  if DPI.X <= FromDPI then
-    Result := Size
-  else
-    Result := MulDiv(Size, DPI.X, FromDPI);
+  Result := MulDiv(Size, DPI.X, FromDPI);
 end;
 
 function TScaleDPI.ScaleY(Size: Integer; FromDPI: Integer): Integer;
 begin
-  if Screen.PixelsPerInch <= FromDPI then
-    Result := Size
-  else
-    Result := MulDiv(Size, DPI.Y, FromDPI);
+  Result := MulDiv(Size, DPI.Y, FromDPI);
 end;
 
@@ -117 +116 @@
 end;
 
-constructor TScaleDPI.Create;
+constructor TScaleDPI.Create(AOwner: TComponent);
 begin
+  inherited;
   DPI := Point(96, 96);
   DesignDPI := Point(96, 96);
@@ -129 +129 @@
   ToolBarControl: TToolBar;
 begin
-  if (DPI.X <= FromDPI.X) or (DPI.Y <= FromDPI.Y) then Exit;
-
   with Control do begin
     Left := ScaleX(Left, FromDPI.X);