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{
*****************************************************************************
* WSShellCtrls.pp *
* ------------- *
* *
* *
*****************************************************************************
*****************************************************************************
This file is part of the Lazarus Component Library (LCL)
See the file COPYING.modifiedLGPL.txt, included in this distribution,
for details about the license.
*****************************************************************************
}
unit win32wsshellctrls;
{$mode objfpc}{$H+}
{$I win32defines.inc}
interface
uses
SysUtils, Classes, ComCtrls, ShellCtrls, Types,
////////////////////////////////////////////////////
// To get as little as posible circles,
// uncomment only when needed for registration
////////////////////////////////////////////////////
// Graphics, ImgList, Controls, ShellCtrls,
////////////////////////////////////////////////////
WSShellCtrls;
type
{ TWin32WSCustomShellTreeView }
TWin32WSCustomShellTreeView = class(TWSCustomShellTreeView)
published
class function DrawBuiltInIcon(ATreeView: TCustomShellTreeView; ANode: TTreeNode;
ARect: TRect): TSize; override;
class function GetBuiltinIconSize: TSize; override;
end;
{ TWin32WSCustomShellListView }
TWin32WSCustomShellListView = class(TWSCustomShellListView)
published
class function GetBuiltInImageIndex(AListView: TCustomShellListView;
const AFileName: String; ALargeImage: Boolean): Integer; override;
end;
implementation
uses
windows, shellapi, graphics;
var
ShellIconSize: TSize = (CX: -1; CY: -1);
function GetShellIcon(const AFileName: WideString): TIcon;
var
FileInfo: TSHFileInfoW;
imgHandle: DWORD_PTR;
begin
imgHandle := SHGetFileInfoW(PWideChar(AFileName), 0, FileInfo, SizeOf(FileInfo),
SHGFI_ICON or SHGFI_SMALLICON or SHGFI_SYSICONINDEX);
if imgHandle <> 0 then
begin
Result := TIcon.Create;
Result.Handle := FileInfo.hIcon;
end else
Result := nil;
end;
{ TWin32WSCustomShellTreeView }
class function TWin32WSCustomShellTreeView.DrawBuiltInIcon(ATreeView: TCustomShellTreeView;
ANode: TTreeNode; ARect: TRect): TSize;
var
filename: WideString;
ico: TIcon;
begin
fileName := WideString(ATreeView.GetPathFromNode(ANode));
ico := GetShellIcon(fileName);
if ico = nil then
begin
Result := Types.Size(0, 0);
exit;
end;
try
ATreeView.Canvas.Draw(ARect.Left, (ARect.Top + ARect.Bottom - ico.Height) div 2, ico);
Result := Types.Size(ico.Width, ico.Height);
finally
ico.Free;
end;
end;
class function TWin32WSCustomShellTreeView.GetBuiltinIconSize: TSize;
var
ico: TIcon;
begin
if (ShellIconSize.CX = -1) and (ShellIconSize.CY = -1) then
begin
ico := GetShellIcon(WideString('C:'));
if ico = nil then
begin
Result := Types.Size(0, 0);
exit;
end;
try
Result := Types.Size(ico.Width, ico.Height);
ShellIconSize := Result;
finally
ico.Free;
end;
end else
Result := ShellIconSize;
end;
{ TWin32WSCustomShellListView }
class function TWin32WSCustomShellListView.GetBuiltInImageIndex(
AListView: TCustomShellListView; const AFileName: String;
ALargeImage: Boolean): Integer;
var
fullName: WideString;
info: TSHFILEINFOW;
sysImageHandle: DWORD_PTR;
listHandle: HWND;
flags: DWord;
lvsil: LongInt;
attr: LongInt;
begin
Result := -1;
fullName := WideString(AFileName);
attr := FileGetAttr(fullName);
if ALargeImage then begin
flags := SHGFI_LARGEICON or SHGFI_SYSICONINDEX or SHGFI_USEFILEATTRIBUTES;
lvsil := LVSIL_NORMAL;
end else
begin
flags := SHGFI_SMALLICON or SHGFI_SYSICONINDEX or SHGFI_USEFILEATTRIBUTES;
lvsil := LVSIL_SMALL;
end;
sysImageHandle := SHGetFileInfoW(PWideChar(fullName), attr, info, SizeOf(info), flags);
if sysImageHandle = 0 then
Exit;
listHandle := AListView.Handle;
if ListView_GetImageList(ListHandle, lvsil) = 0 then
begin
SetWindowLongPtrW(listHandle, GWL_STYLE,
GetWindowLong(listHandle, GWL_STYLE) or LVS_SHAREIMAGELISTS);
ListView_SetImageList(listHandle, sysImageHandle, lvsil);
end;
Result := info.iIcon;
end;
end.
|
