Added: initial class icon implementation

Fixed: Delphi 7 compatibility

Packages/D7/UnitSwitcher.dpk

@@ -47,6 +47,8 @@ contains
   UnSwReg in '..\..\Source\UnSwReg.pas',
   BaseSwObjects in '..\..\Source\BaseSwObjects.pas',
   BaseSwFilters in '..\..\Source\BaseSwFilters.pas',
-  BaseSwDialog in '..\..\Source\BaseSwDialog.pas' {frmBaseSwDialog};
+  BaseSwDialog in '..\..\Source\BaseSwDialog.pas' {frmBaseSwDialog},
+  CmpSwObjects in '..\..\Source\CmpSwObjects.pas',
+  CmpSwDialog in '..\..\Source\CmpSwDialog.pas' {frmCmpSwDialog};
 
 end.

Source/BaseSwDialog.dfm

@@ -1,10 +1,10 @@
 object frmBaseSwDialog: TfrmBaseSwDialog
   Left = 284
   Top = 120
+  Width = 320
+  Height = 425
   BorderIcons = [biSystemMenu]
   Caption = 'UnitSwitcher'
-  ClientHeight = 398
-  ClientWidth = 312
   Color = clBtnFace
   Constraints.MinHeight = 240
   Constraints.MinWidth = 290

Source/CmpSwDialog.dfm

@@ -4,148 +4,11 @@ inherited frmCmpSwDialog: TfrmCmpSwDialog
   TextHeight = 13
   inherited pnlMain: TPanel
     inherited lstItems: TListBox
-      ExplicitTop = 47
+      ItemHeight = 30
     end
   end
   inherited ilsTypes: TImageList
-    Bitmap = {
+    Height = 24
-      494C010101000200040010001000FFFFFFFFFF10FFFFFFFFFFFFFFFF424D3600
+    Width = 24
-      0000000000003600000028000000400000001000000001002000000000000010
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-      0000C0936B00C9936200CE8B4F00CF813900CB7B3600C57B3B00C07E4C00B77A
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-      000000000000000000000000000000000000424D3E000000000000003E000000
-      2800000040000000100000000100010000000000800000000000000000000000
-      000000000000000000000000FFFFFF00FFFF000000000000FFC7000000000000
-      E003000000000000800100000000000080010000000000008001000000000000
-      800100000000000080010000000000008001000000000000E00F000000000000
-      F00F000000000000F00F000000000000F00F000000000000F00F000000000000
-      F00F000000000000FFFF00000000000000000000000000000000000000000000
-      000000000000}
   end
 end

Source/CmpSwDialog.pas

@@ -8,6 +8,7 @@ uses
   Controls,
   ExtCtrls,
   ImgList,
+  IniFiles,
   Menus,
   StdCtrls,
 
@@ -17,11 +18,20 @@ uses
 
 type
   TCmpSwStyleVisitor  = class(TBaseSwStyleVisitor)
+  private
+    FImageList: TImageList;
+    FImageMap: TStringHash;
   protected
     procedure VisitItem(const AItem: TBaseSwItem); override;
+
+    function GetComponentPackage(const AClassName: String): String;
+    function LoadComponentImage(const APackageName, AClassName: String): Integer;
+  public
+    constructor Create(AImageList: TImageList);
+    destructor Destroy(); override;
   end;
 
-  
+
   TfrmCmpSwDialog = class(TfrmBaseSwDialog)
   protected
     function CreateStyleVisitor(): TBaseSwStyleVisitor; override;
@@ -29,24 +39,119 @@ type
 
 
 implementation
+uses
+  CommCtrl,
+  SysUtils,
+  ToolsAPI,
+  Windows,
+
+  CmpSwObjects;
 
 
 {$R *.dfm}
 
 
 { TCmpSwStyleVisitor }
+constructor TCmpSwStyleVisitor.Create(AImageList: TImageList);
+begin
+  inherited Create();
+
+  FImageList  := AImageList;
+  FImageMap   := TStringHash.Create();
+end;
+
+
+destructor TCmpSwStyleVisitor.Destroy();
+begin
+  FreeAndNil(FImageMap);
+
+  inherited;
+end;
+
+
 procedure TCmpSwStyleVisitor.VisitItem(const AItem: TBaseSwItem);
+var
+  component:  TCmpSwComponent;
+  package:    String;
+
 begin
   inherited;
 
-  ImageIndex  := 0;
+  component   := (AItem as TCmpSwComponent);
+  ImageIndex  := FImageMap.ValueOf(component.ComponentClass);
+
+  if ImageIndex = -1 then
+  begin
+    package   := GetComponentPackage(component.ComponentClass);
+    if Length(package) > 0 then
+      ImageIndex  := LoadComponentImage(package, component.ComponentClass);
+  end;
+
+  if ImageIndex = -2 then
+    ImageIndex := 0;
+end;
+
+
+function TCmpSwStyleVisitor.GetComponentPackage(const AClassName: String): String;
+var
+  packageServices:    IOTAPackageServices;
+  packageIndex:       Integer;
+  componentIndex:     Integer;
+
+begin
+  Result          := '';
+  packageServices := (BorlandIDEServices as IOTAPackageServices);
+
+  for packageIndex := Pred(packageServices.PackageCount) downto 0 do
+  begin
+    for componentIndex := Pred(packageServices.ComponentCount[packageIndex]) downto 0 do
+    begin
+      if SameText(packageServices.ComponentNames[packageIndex, componentIndex],
+                  AClassName) then
+      begin
+        Result := packageServices.PackageNames[packageIndex] + '.bpl';
+        Break;
+      end;
+    end;
+  end;
+end;
+
+
+function TCmpSwStyleVisitor.LoadComponentImage(const APackageName, AClassName: String): Integer;
+var
+  packageHandle:    THandle;
+  bitmapHandle:     THandle;
+  bitmap:           TBitmap;
+
+begin
+  Result        := -1;
+  packageHandle := LoadLibrary(PChar(APackageName));
+
+  if packageHandle <> 0 then
+  try
+    bitmapHandle  := LoadBitmap(packageHandle, PChar(AClassName));
+    if bitmapHandle <> 0 then
+    begin
+      bitmap  ;=
+      // #ToDo1 (MvR) 10-12-2007: proper transparency
+      Result := ImageList_AddMasked(FImageList.Handle, bitmapHandle,
+                                    GetTransparentColor(bitmapHandle));
+    end;
+  finally
+    FreeLibrary(packageHandle);
+  end;
+
+  if Result = -1 then
+    Result := -2;
+
+  FImageMap.Add(AClassName, Result);
 end;
 
 
 { TfrmCmpSwDialog }
 function TfrmCmpSwDialog.CreateStyleVisitor(): TBaseSwStyleVisitor;
 begin
-  Result  := TCmpSwStyleVisitor.Create();
+  Result  := TCmpSwStyleVisitor.Create(ilsTypes);
 end;
 
 end.

Source/CmpSwObjects.pas

@@ -10,16 +10,18 @@ uses
 type
   TCmpSwComponent = class(TBaseSwItem)
   private
-    FComponent:   IOTAComponent;
+    FComponent:       IOTAComponent;
-    FName:        String;
+    FComponentClass:  String;
+    FName:            String;
   protected
     function GetName(): String; override;
   public
     constructor Create(AComponent: IOTAComponent);
-
-    procedure Activate(const AClearSelection: Boolean); 
-
     class function TryCreate(AComponent: IOTAComponent): TCmpSwComponent;
+
+    procedure Activate(const AClearSelection: Boolean);
+
+    property ComponentClass:  String  read FComponentClass;
   end;
 
 
@@ -41,8 +43,9 @@ constructor TCmpSwComponent.Create(AComponent: IOTAComponent);
 begin
   inherited Create();
 
-  FComponent  := AComponent;
+  FComponent      := AComponent;
   FComponent.GetPropValueByName('Name', FName);
+  FComponentClass := FComponent.GetComponentType();
 end;
 
 

Source/UnSwDialog.dfm

@@ -1,14 +1,10 @@
 inherited frmUnSwDialog: TfrmUnSwDialog
-  ExplicitHeight = 425
   PixelsPerInch = 96
   TextHeight = 13
   inherited pnlMain: TPanel
     Height = 307
-    ExplicitHeight = 307
     inherited lstItems: TListBox
       Height = 254
-      ExplicitTop = 47
-      ExplicitHeight = 254
     end
   end
   inherited pnlButtons: TPanel
@@ -73,7 +69,7 @@ inherited frmUnSwDialog: TfrmUnSwDialog
   end
   inherited ilsTypes: TImageList
     Bitmap = {
-      494C010106000900040010001000FFFFFFFFFF00FFFFFFFFFFFFFFFF424D3600
+      494C010106000900040010001000FFFFFFFFFF10FFFFFFFFFFFFFFFF424D3600
       0000000000003600000028000000400000003000000001002000000000000030
       0000000000000000000000000000000000000000000000000000000000000000
       0000000000000000000000000000000000000000000000000000000000000000
@@ -473,7 +469,8 @@ inherited frmUnSwDialog: TfrmUnSwDialog
       E000E0000000AC0FE000E0000000BF3FE000E0000000FFFFE000600000001000
       E000200000001000E00000000000B000E00020000000F000E00060000000F000
       E000E0000000F000E000E0000000F000E000E0000000F000E001E0010000F000
-      E003E003FFFFF000E007E007FFFFF000}
+      E003E003FFFFF000E007E007FFFFF00000000000000000000000000000000000
+      000000000000}
   end
   inherited alMain: TActionList
     object actSortByName: TAction