让禁用的菜单和工具栏图像看起来更好?

问题描述 投票:19回答:5

请看附件中的截图,它说明了我的一个程序的TToolBar。

enter image description here

请注意工具栏的最后两个图像,它们是禁用的。它们被绘制成禁用的方式不是很吸引人,事实上在Delphi IDE中,有些图像看起来是一样的。

我的问题是,我希望我的应用程序看起来更简洁。禁用项的绘制方式看起来不是很好。TToolBar允许设置一个禁用的TImageList,我试过把我的图片做成黑&白,但它们看起来不对,而且宁愿不用总是把图片做成黑和白(费时费力)。这个问题也显示在我的菜单和弹出式菜单中,反正这些菜单不允许禁用图像。

有没有办法把禁用项画得更好看?

如果可能的话,我宁愿不看使用第三方控件。我知道绝地组件允许禁用图像的菜单等,但更希望有一种方法,不要太求助于第三方组件,在可能的情况下,我更喜欢使用标准的问题VCL,特别是有时我使用TActionMainMenuBar来绘制Office风格的菜单,当DrawingStyle被设置为渐变时,它与TToolBar相匹配。

EDIT

我已经接受了RRUZ的答案,不过是否也可以接受David的答案,这两个答案都非常好,如果可以的话,希望他们之间能够共享答案。

谢谢。

image delphi menu toolbar
5个回答
21
投票

不久前,我写了一个补丁来修复这种行为。TCustomImageList.DoDraw 函数,所使用的技术类似于由 delphi-nice-toolbar 应用,但在这种情况下,我们不是在bpl IDE中打补丁,而是在内存中打补丁。

只要在你的项目中加入这个单元

unit uCustomImageDrawHook;

interface

uses
  Windows,
  SysUtils,
  Graphics,
  ImgList,
  CommCtrl,
  Math;

implementation

type
  TJumpOfs = Integer;
  PPointer = ^Pointer;

  PXRedirCode = ^TXRedirCode;
  TXRedirCode = packed record
    Jump: Byte;
    Offset: TJumpOfs;
  end;

  PAbsoluteIndirectJmp = ^TAbsoluteIndirectJmp;
  TAbsoluteIndirectJmp = packed record
    OpCode: Word;
    Addr: PPointer;
  end;


  TCustomImageListHack = class(TCustomImageList);

var
  DoDrawBackup   : TXRedirCode;

function GetActualAddr(Proc: Pointer): Pointer;
begin
  if Proc <> nil then
  begin
    if (Win32Platform = VER_PLATFORM_WIN32_NT) and (PAbsoluteIndirectJmp(Proc).OpCode = $25FF) then
      Result := PAbsoluteIndirectJmp(Proc).Addr^
    else
      Result := Proc;
  end
  else
    Result := nil;
end;

procedure HookProc(Proc, Dest: Pointer; var BackupCode: TXRedirCode);
var
  n: DWORD;
  Code: TXRedirCode;
begin
  Proc := GetActualAddr(Proc);
  Assert(Proc <> nil);
  if ReadProcessMemory(GetCurrentProcess, Proc, @BackupCode, SizeOf(BackupCode), n) then
  begin
    Code.Jump := $E9;
    Code.Offset := PAnsiChar(Dest) - PAnsiChar(Proc) - SizeOf(Code);
    WriteProcessMemory(GetCurrentProcess, Proc, @Code, SizeOf(Code), n);
  end;
end;

procedure UnhookProc(Proc: Pointer; var BackupCode: TXRedirCode);
var
  n: Cardinal;
begin
  if (BackupCode.Jump <> 0) and (Proc <> nil) then
  begin
    Proc := GetActualAddr(Proc);
    Assert(Proc <> nil);
    WriteProcessMemory(GetCurrentProcess, Proc, @BackupCode, SizeOf(BackupCode), n);
    BackupCode.Jump := 0;
  end;
end;


procedure Bitmap2GrayScale(const BitMap: TBitmap);
type
  TRGBArray = array[0..32767] of TRGBTriple;
  PRGBArray = ^TRGBArray;
var
  x, y, Gray: Integer;
  Row       : PRGBArray;
begin
  BitMap.PixelFormat := pf24Bit;
  for y := 0 to BitMap.Height - 1 do
  begin
    Row := BitMap.ScanLine[y];
    for x := 0 to BitMap.Width - 1 do
    begin
      Gray             := (Row[x].rgbtRed + Row[x].rgbtGreen + Row[x].rgbtBlue) div 3;
      Row[x].rgbtRed   := Gray;
      Row[x].rgbtGreen := Gray;
      Row[x].rgbtBlue  := Gray;
    end;
  end;
end;


//from ImgList.GetRGBColor
function GetRGBColor(Value: TColor): DWORD;
begin
  Result := ColorToRGB(Value);
  case Result of
    clNone:
      Result := CLR_NONE;
    clDefault:
      Result := CLR_DEFAULT;
  end;
end;


procedure New_Draw(Self: TObject; Index: Integer; Canvas: TCanvas; X, Y: Integer; Style: Cardinal; Enabled: Boolean);
var
  MaskBitMap : TBitmap;
  GrayBitMap : TBitmap;
begin
  with TCustomImageListHack(Self) do
  begin
    if not HandleAllocated then Exit;
    if Enabled then
      ImageList_DrawEx(Handle, Index, Canvas.Handle, X, Y, 0, 0, GetRGBColor(BkColor), GetRGBColor(BlendColor), Style)
    else
    begin
      GrayBitMap := TBitmap.Create;
      MaskBitMap := TBitmap.Create;
      try
        GrayBitMap.SetSize(Width, Height);
        MaskBitMap.SetSize(Width, Height);
        GetImages(Index, GrayBitMap, MaskBitMap);
        Bitmap2GrayScale(GrayBitMap);
        BitBlt(Canvas.Handle, X, Y, Width, Height, MaskBitMap.Canvas.Handle, 0, 0, SRCERASE);
        BitBlt(Canvas.Handle, X, Y, Width, Height, GrayBitMap.Canvas.Handle, 0, 0, SRCINVERT);
      finally
        GrayBitMap.Free;
        MaskBitMap.Free;
      end;
    end;
  end;
end;

procedure HookDraw;
begin
  HookProc(@TCustomImageListHack.DoDraw, @New_Draw, DoDrawBackup);
end;

procedure UnHookDraw;
begin
  UnhookProc(@TCustomImageListHack.DoDraw, DoDrawBackup);
end;


initialization
 HookDraw;
finalization
 UnHookDraw;
end.

而结果将是

enter image description here


7
投票

I 提交QC报告 一年多前的一个相关问题,但那是针对菜单的。 我从来没有见过这个 TToolbar 因为它是通用控件的封装器,而绘图是由Windows处理的。

然而,你所看到的图像显然是VCL调用了 TImageList.Draw 并通过 Enabled=False - 没有其他东西看起来那么糟糕! 你100%确定这真的是一个 TToolbar

解决办法肯定是避免 TImageList.Draw 并称 ImageList_DrawIndirect 随着 ILS_SATURATE.

你可能需要修改一些VCL源代码。 首先找到自定义绘制工具栏的位置,然后调用这个例程而不是调用 TImageList.Draw.

procedure DrawDisabledImage(DC: HDC; ImageList: TCustomImageList; Index, X, Y: Integer);
var
  Options: TImageListDrawParams;
begin
  ZeroMemory(@Options, SizeOf(Options));
  Options.cbSize := SizeOf(Options);
  Options.himl := ImageList.Handle;
  Options.i := Index;
  Options.hdcDst := DC;
  Options.x := X;
  Options.y := Y;
  Options.fState := ILS_SATURATE;
  ImageList_DrawIndirect(@Options);
end;

一个更好的修复方法是找出为什么工具栏被自定义绘制的原因,并找到一种方法让系统来绘制。


EDIT 1

我看了Delphi的源代码,我猜你是在自定义绘制工具栏,也许是因为它有一个渐变。 我甚至从来不知道TToolbar可以处理自定义绘图,但我只是一个普通的vanilla类型的家伙!

无论如何,我可以看到以下代码 TToolBar.GradientDrawButton 呼叫 TImageList.Draw 所以我认为上面的解释是对的。

我很确定,把我的 DrawDisabledImage 函数会给你更好的结果。 如果能找到一种方法,让你在调用 TImageList.Draw 那么,我想,这将是最好的修复,因为它将适用于批发。

EDIT 2

结合上面的功能和@RRUZ的答案,你有一个很好的解决方案。


2
投票

如果你在ActionToolBar中使用LargeImages,那么@RRUZ的解决方案就不适用了。我对@RRUZ的代码进行了修改,使其能够在ActionToolBar中使用LargeImages。

unit unCustomImageDrawHook;

interface

uses
  Windows,
  SysUtils,
  Graphics,
  ImgList,
  CommCtrl,
  Math,
  Vcl.ActnMan,
  System.Classes;

implementation

type
  TJumpOfs = Integer;
  PPointer = ^Pointer;

  PXRedirCode = ^TXRedirCode;
  TXRedirCode = packed record
    Jump: Byte;
    Offset: TJumpOfs;
  end;

  PAbsoluteIndirectJmp = ^TAbsoluteIndirectJmp;
  TAbsoluteIndirectJmp = packed record
    OpCode: Word;
    Addr: PPointer;
  end;


  TCustomImageListHack = class(TCustomImageList);
  TCustomActionControlHook = class(TCustomActionControl);

var
  DoDrawBackup   : TXRedirCode;
  DoDrawBackup2   : TXRedirCode;  

function GetActualAddr(Proc: Pointer): Pointer;
begin
  if Proc <> nil then
  begin
    if (Win32Platform = VER_PLATFORM_WIN32_NT) and (PAbsoluteIndirectJmp(Proc).OpCode = $25FF) then
      Result := PAbsoluteIndirectJmp(Proc).Addr^
    else
      Result := Proc;
  end
  else
    Result := nil;
end;

procedure HookProc(Proc, Dest: Pointer; var BackupCode: TXRedirCode);
var
  n: SIZE_T;
  Code: TXRedirCode;
begin
  Proc := GetActualAddr(Proc);
  Assert(Proc <> nil);
  if ReadProcessMemory(GetCurrentProcess, Proc, @BackupCode, SizeOf(BackupCode), n) then
  begin
    Code.Jump := $E9;
    Code.Offset := PAnsiChar(Dest) - PAnsiChar(Proc) - SizeOf(Code);
    WriteProcessMemory(GetCurrentProcess, Proc, @Code, SizeOf(Code), n);
  end;
end;

procedure UnhookProc(Proc: Pointer; var BackupCode: TXRedirCode);
var
  n: SIZE_T;
begin
  if (BackupCode.Jump <> 0) and (Proc <> nil) then
  begin
    Proc := GetActualAddr(Proc);
    Assert(Proc <> nil);
    WriteProcessMemory(GetCurrentProcess, Proc, @BackupCode, SizeOf(BackupCode), n);
    BackupCode.Jump := 0;
  end;
end;

procedure Bitmap2GrayScale(const BitMap: TBitmap);
type
  TRGBArray = array[0..32767] of TRGBTriple;
  PRGBArray = ^TRGBArray;
var
  x, y, Gray: Integer;
  Row       : PRGBArray;
begin
  BitMap.PixelFormat := pf24Bit;
  for y := 0 to BitMap.Height - 1 do
  begin
    Row := BitMap.ScanLine[y];
    for x := 0 to BitMap.Width - 1 do
    begin
      Gray             := (Row[x].rgbtRed + Row[x].rgbtGreen + Row[x].rgbtBlue) div 3;
      Row[x].rgbtRed   := Gray;
      Row[x].rgbtGreen := Gray;
      Row[x].rgbtBlue  := Gray;
    end;
  end;
end;


//from ImgList.GetRGBColor
function GetRGBColor(Value: TColor): DWORD;
begin
  Result := ColorToRGB(Value);
  case Result of
    clNone:
      Result := CLR_NONE;
    clDefault:
      Result := CLR_DEFAULT;
  end;
end;


procedure New_Draw(Self: TObject; Index: Integer; Canvas: TCanvas; X, Y: Integer; Style: Cardinal; Enabled: Boolean);
var
  MaskBitMap : TBitmap;
  GrayBitMap : TBitmap;
begin
  with TCustomImageListHack(Self) do
  begin
    if not HandleAllocated then Exit;
    if Enabled then
      ImageList_DrawEx(Handle, Index, Canvas.Handle, X, Y, 0, 0, GetRGBColor(BkColor), GetRGBColor(BlendColor), Style)
    else
    begin
      GrayBitMap := TBitmap.Create;
      MaskBitMap := TBitmap.Create;
      try
        GrayBitMap.SetSize(Width, Height);
        MaskBitMap.SetSize(Width, Height);
        GetImages(Index, GrayBitMap, MaskBitMap);
        Bitmap2GrayScale(GrayBitMap);
        BitBlt(Canvas.Handle, X, Y, Width, Height, MaskBitMap.Canvas.Handle, 0, 0, SRCERASE);
        BitBlt(Canvas.Handle, X, Y, Width, Height, GrayBitMap.Canvas.Handle, 0, 0, SRCINVERT);
      finally
        GrayBitMap.Free;
        MaskBitMap.Free;
      end;
    end;
  end;
end;


procedure New_Draw2(Self: TObject; const Location: TPoint);
var
  ImageList: TCustomImageList;
  DrawEnabled: Boolean;
  LDisabled: Boolean;
begin
  with TCustomActionControlHook(Self) do
  begin
    if not HasGlyph then Exit;
    ImageList := FindImageList(True, LDisabled, ActionClient.ImageIndex);
    if not Assigned(ImageList) then Exit;
    DrawEnabled := LDisabled or Enabled and (ActionClient.ImageIndex <> -1) or
      (csDesigning in ComponentState);
    ImageList.Draw(Canvas, Location.X, Location.Y, ActionClient.ImageIndex,
      dsTransparent, itImage, DrawEnabled);
  end;
end;


procedure HookDraw;
begin
  HookProc(@TCustomImageListHack.DoDraw, @New_Draw, DoDrawBackup);
  HookProc(@TCustomActionControlHook.DrawLargeGlyph, @New_Draw2, DoDrawBackup2);
end;

procedure UnHookDraw;
begin
  UnhookProc(@TCustomImageListHack.DoDraw, DoDrawBackup);
  UnhookProc(@TCustomActionControlHook.DrawLargeGlyph, DoDrawBackup2);
end;


initialization
  HookDraw;
finalization
  UnHookDraw;
end.

0
投票

请看一下 这个Delphi IDE修复. 也许你可以模仿它的实现。


0
投票

使用TActionToolbar,TActionmanager,Timagelist。

将动作管理器图像列表设置为时间列表,并将Disabledimages设置为另一个图像列表。

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