fccombobutton.pas
上传用户:hylc_2004
上传日期:2014-01-23
资源大小:46800k
文件大小:37k
- unit fccombobutton;
- {$include fcifdef.pas}
- interface
- uses Windows, Messages, Classes, Controls, Forms, Graphics, StdCtrls,
- ExtCtrls, CommCtrl, buttons,
- fccommon;
- type
- // TButtonLayout = (blGlyphLeft, blGlyphRight, blGlyphTop, blGlyphBottom);
- // TButtonState = (bsUp, bsDisabled, bsDown, bsExclusive);
- // TButtonStyle = (bsAutoDetect, bsWin31, bsNew);
- // TNumGlyphs = 1..4;
- TfcComboButton = class;
- TfcComboButtonActionLink = class(TControlActionLink)
- protected
- FClient: TSpeedButton;
- procedure AssignClient(AClient: TObject); override;
- function IsCheckedLinked: Boolean; override;
- {$ifdef fcDelphi6Up}
- function IsGroupIndexLinked: Boolean; override;
- procedure SetGroupIndex(Value: Integer); override;
- {$endif}
- procedure SetChecked(Value: Boolean); override;
- end;
- TfcComboButton = class(TGraphicControl)
- private
- FGroupIndex: Integer;
- FDown: Boolean;
- FDragging: Boolean;
- FAllowAllUp: Boolean;
- FLayout: TButtonLayout;
- FSpacing: Integer;
- FTransparent: Boolean;
- FMargin: Integer;
- FFlat: Boolean;
- FMouseInControl: Boolean;
- FEllipsis: boolean;
- procedure GlyphChanged(Sender: TObject);
- procedure UpdateExclusive;
- function GetGlyph: TBitmap;
- procedure SetGlyph(Value: TBitmap);
- function GetNumGlyphs: TNumGlyphs;
- procedure SetNumGlyphs(Value: TNumGlyphs);
- procedure SetDown(Value: Boolean);
- procedure SetFlat(Value: Boolean);
- procedure SetAllowAllUp(Value: Boolean);
- procedure SetGroupIndex(Value: Integer);
- procedure SetLayout(Value: TButtonLayout);
- procedure SetSpacing(Value: Integer);
- procedure SetTransparent(Value: Boolean);
- procedure SetMargin(Value: Integer);
- procedure UpdateTracking;
- procedure WMLButtonDblClk(var Message: TWMLButtonDown); message WM_LBUTTONDBLCLK;
- procedure CMEnabledChanged(var Message: TMessage); message CM_ENABLEDCHANGED;
- procedure CMButtonPressed(var Message: TMessage); message CM_BUTTONPRESSED;
- procedure CMDialogChar(var Message: TCMDialogChar); message CM_DIALOGCHAR;
- procedure CMFontChanged(var Message: TMessage); message CM_FONTCHANGED;
- procedure CMTextChanged(var Message: TMessage); message CM_TEXTCHANGED;
- procedure CMSysColorChange(var Message: TMessage); message CM_SYSCOLORCHANGE;
- procedure CMMouseEnter(var Message: TMessage); message CM_MOUSEENTER;
- procedure CMMouseLeave(var Message: TMessage); message CM_MOUSELEAVE;
- protected
- FGlyph: Pointer;
- FState: TButtonState;
- procedure ActionChange(Sender: TObject; CheckDefaults: Boolean); override;
- function GetActionLinkClass: TControlActionLinkClass; override;
- function GetPalette: HPALETTE; override;
- procedure Loaded; override;
- procedure MouseDown(Button: TMouseButton; Shift: TShiftState;
- X, Y: Integer); override;
- procedure MouseMove(Shift: TShiftState; X, Y: Integer); override;
- procedure MouseUp(Button: TMouseButton; Shift: TShiftState;
- X, Y: Integer); override;
- procedure Paint; override;
- property MouseInControl: Boolean read FMouseInControl;
- property Ellipsis: boolean read FEllipsis write FEllipsis;
- public
- constructor Create(AOwner: TComponent); override;
- destructor Destroy; override;
- procedure Click; override;
- published
- property Action;
- property AllowAllUp: Boolean read FAllowAllUp write SetAllowAllUp default False;
- property Anchors;
- property BiDiMode;
- property Constraints;
- property GroupIndex: Integer read FGroupIndex write SetGroupIndex default 0;
- property Down: Boolean read FDown write SetDown default False;
- property Caption;
- property Enabled;
- property Flat: Boolean read FFlat write SetFlat default False;
- property Font;
- property Glyph: TBitmap read GetGlyph write SetGlyph;
- property Layout: TButtonLayout read FLayout write SetLayout default blGlyphLeft;
- property Margin: Integer read FMargin write SetMargin default -1;
- property NumGlyphs: TNumGlyphs read GetNumGlyphs write SetNumGlyphs default 1;
- property ParentFont;
- property ParentShowHint;
- property ParentBiDiMode;
- property PopupMenu;
- property ShowHint;
- property Spacing: Integer read FSpacing write SetSpacing default 4;
- property Transparent: Boolean read FTransparent write SetTransparent default True;
- property Visible;
- property OnClick;
- property OnDblClick;
- property OnMouseDown;
- property OnMouseMove;
- property OnMouseUp;
- end;
- TGlyphList = class(TImageList)
- private
- Used: TBits;
- FCount: Integer;
- function AllocateIndex: Integer;
- public
- constructor CreateSize(AWidth, AHeight: Integer);
- destructor Destroy; override;
- function AddMasked(Image: TBitmap; MaskColor: TColor): Integer;
- procedure Delete(Index: Integer);
- property Count: Integer read FCount;
- end;
- TfcComboButtonGlyph = class
- private
- FOriginal: TBitmap;
- FGlyphList: TGlyphList;
- FIndexs: array[TButtonState] of Integer;
- FTransparentColor: TColor;
- FNumGlyphs: TNumGlyphs;
- FOnChange: TNotifyEvent;
- FComboButton: TControl;
- procedure GlyphChanged(Sender: TObject);
- procedure SetGlyph(Value: TBitmap);
- procedure SetNumGlyphs(Value: TNumGlyphs);
- procedure Invalidate;
- function CreateButtonGlyph(State: TButtonState): Integer;
- procedure DrawButtonGlyph(Canvas: TCanvas; const GlyphPos: TPoint;
- State: TButtonState; Transparent: Boolean);
- procedure DrawButtonText(Canvas: TCanvas; const Caption: string;
- TextBounds: TRect; State: TButtonState; BiDiFlags: Longint);
- procedure CalcButtonLayout(Canvas: TCanvas; const Client: TRect;
- const Offset: TPoint; const Caption: string; Layout: TButtonLayout;
- Margin, Spacing: Integer; var GlyphPos: TPoint; var TextBounds: TRect;
- BiDiFlags: Longint);
- public
- property ComboButton: TControl read FComboButton;
- constructor Create(AComboButton: TControl);
- destructor Destroy; override;
- { return the text rectangle }
- function Draw(Canvas: TCanvas; const Client: TRect; const Offset: TPoint;
- const Caption: string; Layout: TButtonLayout; Margin, Spacing: Integer;
- State: TButtonState; Transparent: Boolean; BiDiFlags: Longint): TRect;
- property Glyph: TBitmap read FOriginal write SetGlyph;
- property NumGlyphs: TNumGlyphs read FNumGlyphs write SetNumGlyphs;
- property OnChange: TNotifyEvent read FOnChange write FOnChange;
- end;
- implementation
- uses Consts, SysUtils, ActnList,
- {$ifdef fcDelphi7Up}
- Themes,
- {$endif}
- {$ifdef ThemeManager}
- thememgr, themesrv, uxtheme,
- {$endif}
- ImgList;
- //{$R Buttons.res}
- {function GetBitBtnGlyph(Kind: TBitBtnKind): TBitmap;
- begin
- if BitBtnGlyphs[Kind] = nil then
- begin
- BitBtnGlyphs[Kind] := TBitmap.Create;
- BitBtnGlyphs[Kind].LoadFromResourceName(HInstance, BitBtnResNames[Kind]);
- end;
- Result := BitBtnGlyphs[Kind];
- end;
- }
- type
- TGlyphCache = class
- private
- GlyphLists: TList;
- public
- constructor Create;
- destructor Destroy; override;
- function GetList(AWidth, AHeight: Integer): TGlyphList;
- procedure ReturnList(List: TGlyphList);
- function Empty: Boolean;
- end;
-
- { TGlyphList }
-
- constructor TGlyphList.CreateSize(AWidth, AHeight: Integer);
- begin
- inherited CreateSize(AWidth, AHeight);
- Used := TBits.Create;
- end;
-
- destructor TGlyphList.Destroy;
- begin
- Used.Free;
- inherited Destroy;
- end;
-
- function TGlyphList.AllocateIndex: Integer;
- begin
- Result := Used.OpenBit;
- if Result >= Used.Size then
- begin
- Result := inherited Add(nil, nil);
- Used.Size := Result + 1;
- end;
- Used[Result] := True;
- end;
- function TGlyphList.AddMasked(Image: TBitmap; MaskColor: TColor): Integer;
- begin
- Result := AllocateIndex;
- ReplaceMasked(Result, Image, MaskColor);
- Inc(FCount);
- end;
-
- procedure TGlyphList.Delete(Index: Integer);
- begin
- if Used[Index] then
- begin
- Dec(FCount);
- Used[Index] := False;
- end;
- end;
-
- { TGlyphCache }
-
- constructor TGlyphCache.Create;
- begin
- inherited Create;
- GlyphLists := TList.Create;
- end;
-
- destructor TGlyphCache.Destroy;
- begin
- GlyphLists.Free;
- inherited Destroy;
- end;
- function TGlyphCache.GetList(AWidth, AHeight: Integer): TGlyphList;
- var
- I: Integer;
- begin
- for I := GlyphLists.Count - 1 downto 0 do
- begin
- Result := GlyphLists[I];
- with Result do
- if (AWidth = Width) and (AHeight = Height) then Exit;
- end;
- Result := TGlyphList.CreateSize(AWidth, AHeight);
- GlyphLists.Add(Result);
- end;
-
- procedure TGlyphCache.ReturnList(List: TGlyphList);
- begin
- if List = nil then Exit;
- if List.Count = 0 then
- begin
- GlyphLists.Remove(List);
- List.Free;
- end;
- end;
-
- function TGlyphCache.Empty: Boolean;
- begin
- Result := GlyphLists.Count = 0;
- end;
-
- var
- GlyphCache: TGlyphCache = nil;
- ButtonCount: Integer = 0;
- { TfcComboButtonGlyph }
- constructor TfcComboButtonGlyph.Create;
- var
- I: TButtonState;
- begin
- inherited Create;
- FOriginal := TBitmap.Create;
- FOriginal.OnChange := GlyphChanged;
- FTransparentColor := clOlive;
- FNumGlyphs := 1;
- for I := Low(I) to High(I) do
- FIndexs[I] := -1;
- if GlyphCache = nil then GlyphCache := TGlyphCache.Create;
- FComboButton:= AComboButton;
- end;
- destructor TfcComboButtonGlyph.Destroy;
- begin
- FOriginal.Free;
- Invalidate;
- if Assigned(GlyphCache) and GlyphCache.Empty then
- begin
- GlyphCache.Free;
- GlyphCache := nil;
- end;
- inherited Destroy;
- end;
-
- procedure TfcComboButtonGlyph.Invalidate;
- var
- I: TButtonState;
- begin
- for I := Low(I) to High(I) do
- begin
- if FIndexs[I] <> -1 then FGlyphList.Delete(FIndexs[I]);
- FIndexs[I] := -1;
- end;
- GlyphCache.ReturnList(FGlyphList);
- FGlyphList := nil;
- end;
-
- procedure TfcComboButtonGlyph.GlyphChanged(Sender: TObject);
- begin
- if Sender = FOriginal then
- begin
- FTransparentColor := FOriginal.TransparentColor;
- Invalidate;
- if Assigned(FOnChange) then FOnChange(Self);
- end;
- end;
-
- procedure TfcComboButtonGlyph.SetGlyph(Value: TBitmap);
- var
- Glyphs: Integer;
- begin
- Invalidate;
- FOriginal.Assign(Value);
- if (Value <> nil) and (Value.Height > 0) then
- begin
- FTransparentColor := Value.TransparentColor;
- if Value.Width mod Value.Height = 0 then
- begin
- Glyphs := Value.Width div Value.Height;
- if Glyphs > 4 then Glyphs := 1;
- SetNumGlyphs(Glyphs);
- end;
- end;
- end;
-
- procedure TfcComboButtonGlyph.SetNumGlyphs(Value: TNumGlyphs);
- begin
- if (Value <> FNumGlyphs) and (Value > 0) then
- begin
- Invalidate;
- FNumGlyphs := Value;
- GlyphChanged(Glyph);
- end;
- end;
-
- function TfcComboButtonGlyph.CreateButtonGlyph(State: TButtonState): Integer;
- const
- ROP_DSPDxax = $00E20746;
- var
- TmpImage, DDB, MonoBmp: TBitmap;
- IWidth, IHeight: Integer;
- IRect, ORect: TRect;
- I: TButtonState;
- DestDC: HDC;
- begin
- if (State = bsDown) and (NumGlyphs < 3) then State := bsUp;
- Result := FIndexs[State];
- if Result <> -1 then Exit;
- if (FOriginal.Width or FOriginal.Height) = 0 then Exit;
- IWidth := FOriginal.Width div FNumGlyphs;
- IHeight := FOriginal.Height;
- if FGlyphList = nil then
- begin
- if GlyphCache = nil then GlyphCache := TGlyphCache.Create;
- FGlyphList := GlyphCache.GetList(IWidth, IHeight);
- end;
- TmpImage := TBitmap.Create;
- try
- TmpImage.Width := IWidth;
- TmpImage.Height := IHeight;
- IRect := Rect(0, 0, IWidth, IHeight);
- TmpImage.Canvas.Brush.Color := clBtnFace;
- TmpImage.Palette := CopyPalette(FOriginal.Palette);
- I := State;
- if Ord(I) >= NumGlyphs then I := bsUp;
- ORect := Rect(Ord(I) * IWidth, 0, (Ord(I) + 1) * IWidth, IHeight);
- case State of
- bsUp, bsDown,
- bsExclusive:
- begin
- TmpImage.Canvas.CopyRect(IRect, FOriginal.Canvas, ORect);
- if FOriginal.TransparentMode = tmFixed then
- FIndexs[State] := FGlyphList.AddMasked(TmpImage, FTransparentColor)
- else
- FIndexs[State] := FGlyphList.AddMasked(TmpImage, clDefault);
- end;
- bsDisabled:
- begin
- MonoBmp := nil;
- DDB := nil;
- try
- MonoBmp := TBitmap.Create;
- DDB := TBitmap.Create;
- DDB.Assign(FOriginal);
- DDB.HandleType := bmDDB;
- if NumGlyphs > 1 then
- with TmpImage.Canvas do
- begin { Change white & gray to clBtnHighlight and clBtnShadow }
- CopyRect(IRect, DDB.Canvas, ORect);
- MonoBmp.Monochrome := True;
- MonoBmp.Width := IWidth;
- MonoBmp.Height := IHeight;
-
- { Convert white to clBtnHighlight }
- DDB.Canvas.Brush.Color := clWhite;
- MonoBmp.Canvas.CopyRect(IRect, DDB.Canvas, ORect);
- Brush.Color := clBtnHighlight;
- DestDC := Handle;
- SetTextColor(DestDC, clBlack);
- SetBkColor(DestDC, clWhite);
- BitBlt(DestDC, 0, 0, IWidth, IHeight,
- MonoBmp.Canvas.Handle, 0, 0, ROP_DSPDxax);
- { Convert gray to clBtnShadow }
- DDB.Canvas.Brush.Color := clGray;
- MonoBmp.Canvas.CopyRect(IRect, DDB.Canvas, ORect);
- Brush.Color := clBtnShadow;
- DestDC := Handle;
- SetTextColor(DestDC, clBlack);
- SetBkColor(DestDC, clWhite);
- BitBlt(DestDC, 0, 0, IWidth, IHeight,
- MonoBmp.Canvas.Handle, 0, 0, ROP_DSPDxax);
-
- { Convert transparent color to clBtnFace }
- DDB.Canvas.Brush.Color := ColorToRGB(FTransparentColor);
- MonoBmp.Canvas.CopyRect(IRect, DDB.Canvas, ORect);
- Brush.Color := clBtnFace;
- DestDC := Handle;
- SetTextColor(DestDC, clBlack);
- SetBkColor(DestDC, clWhite);
- BitBlt(DestDC, 0, 0, IWidth, IHeight,
- MonoBmp.Canvas.Handle, 0, 0, ROP_DSPDxax);
- end
- else
- begin
- { Create a disabled version }
- with MonoBmp do
- begin
- Assign(FOriginal);
- HandleType := bmDDB;
- Canvas.Brush.Color := clBlack;
- Width := IWidth;
- if Monochrome then
- begin
- Canvas.Font.Color := clWhite;
- Monochrome := False;
- Canvas.Brush.Color := clWhite;
- end;
- Monochrome := True;
- end;
- with TmpImage.Canvas do
- begin
- Brush.Color := clBtnFace;
- FillRect(IRect);
- Brush.Color := clBtnHighlight;
- SetTextColor(Handle, clBlack);
- SetBkColor(Handle, clWhite);
- BitBlt(Handle, 1, 1, IWidth, IHeight,
- MonoBmp.Canvas.Handle, 0, 0, ROP_DSPDxax);
- Brush.Color := clBtnShadow;
- SetTextColor(Handle, clBlack);
- SetBkColor(Handle, clWhite);
- BitBlt(Handle, 0, 0, IWidth, IHeight,
- MonoBmp.Canvas.Handle, 0, 0, ROP_DSPDxax);
- end;
- end;
- finally
- DDB.Free;
- MonoBmp.Free;
- end;
- FIndexs[State] := FGlyphList.AddMasked(TmpImage, clDefault);
- end;
- end;
- finally
- TmpImage.Free;
- end;
- Result := FIndexs[State];
- FOriginal.Dormant;
- end;
- procedure TfcComboButtonGlyph.DrawButtonGlyph(Canvas: TCanvas; const GlyphPos: TPoint;
- State: TButtonState; Transparent: Boolean);
- var
- Index: Integer;
- {$ifdef fcUseThemeManager}
- Details: TThemedElementDetails;
- R: TRect;
- Button: TThemedButton;
- {$endif}
- begin
- if FOriginal = nil then Exit;
- if (FOriginal.Width = 0) or (FOriginal.Height = 0) then Exit;
- Index := CreateButtonGlyph(State);
- with GlyphPos do
- begin
- if fcUseThemes(ComboButton) then
- begin
- {$ifdef fcUseThemeManager}
- R.TopLeft := GlyphPos;
- R.Right := R.Left + FOriginal.Width div FNumGlyphs;
- R.Bottom := R.Top + FOriginal.Height;
- case State of
- bsDisabled:
- Button := tbPushButtonDisabled;
- bsDown,
- bsExclusive:
- Button := tbPushButtonPressed;
- else
- // bsUp
- Button := tbPushButtonNormal;
- end;
- Details := ThemeServices.GetElementDetails(Button);
- ThemeServices.DrawIcon(Canvas.Handle, Details, R, FGlyphList.Handle, Index);
- {$endif}
- end
- else
- if Transparent or (State = bsExclusive) then
- begin
- ImageList_DrawEx(FGlyphList.Handle, Index, Canvas.Handle, X, Y, 0, 0,
- clNone, clNone, ILD_Transparent)
- end
- else
- ImageList_DrawEx(FGlyphList.Handle, Index, Canvas.Handle, X, Y, 0, 0,
- ColorToRGB(clBtnFace), clNone, ILD_Normal);
- end;
- end;
- procedure TfcComboButtonGlyph.DrawButtonText(Canvas: TCanvas; const Caption: string;
- TextBounds: TRect; State: TButtonState; BiDiFlags: LongInt);
- begin
- with Canvas do
- begin
- Brush.Style := bsClear;
- if State = bsDisabled then
- begin
- OffsetRect(TextBounds, 1, 1);
- Font.Color := clBtnHighlight;
- DrawText(Handle, PChar(Caption), Length(Caption), TextBounds,
- DT_CENTER or DT_VCENTER or BiDiFlags);
- OffsetRect(TextBounds, -1, -1);
- Font.Color := clBtnShadow;
- DrawText(Handle, PChar(Caption), Length(Caption), TextBounds,
- DT_CENTER or DT_VCENTER or BiDiFlags);
- end else
- DrawText(Handle, PChar(Caption), Length(Caption), TextBounds,
- DT_CENTER or DT_VCENTER or BiDiFlags);
- end;
- end;
-
- procedure TfcComboButtonGlyph.CalcButtonLayout(Canvas: TCanvas; const Client: TRect;
- const Offset: TPoint; const Caption: string; Layout: TButtonLayout; Margin,
- Spacing: Integer; var GlyphPos: TPoint; var TextBounds: TRect;
- BiDiFlags: LongInt);
- var
- TextPos: TPoint;
- ClientSize, GlyphSize, TextSize: TPoint;
- TotalSize: TPoint;
- begin
- if (BiDiFlags and DT_RIGHT) = DT_RIGHT then
- if Layout = blGlyphLeft then Layout := blGlyphRight
- else
- if Layout = blGlyphRight then Layout := blGlyphLeft;
- { calculate the item sizes }
- ClientSize := Point(Client.Right - Client.Left, Client.Bottom -
- Client.Top);
-
- if FOriginal <> nil then
- GlyphSize := Point(FOriginal.Width div FNumGlyphs, FOriginal.Height) else
- GlyphSize := Point(0, 0);
-
- if Length(Caption) > 0 then
- begin
- TextBounds := Rect(0, 0, Client.Right - Client.Left, 0);
- DrawText(Canvas.Handle, PChar(Caption), Length(Caption), TextBounds,
- DT_CALCRECT or BiDiFlags);
- TextSize := Point(TextBounds.Right - TextBounds.Left, TextBounds.Bottom -
- TextBounds.Top);
- end
- else
- begin
- TextBounds := Rect(0, 0, 0, 0);
- TextSize := Point(0,0);
- end;
-
- { If the layout has the glyph on the right or the left, then both the
- text and the glyph are centered vertically. If the glyph is on the top
- or the bottom, then both the text and the glyph are centered horizontally.}
- if Layout in [blGlyphLeft, blGlyphRight] then
- begin
- GlyphPos.Y := (ClientSize.Y - GlyphSize.Y + 1) div 2;
- TextPos.Y := (ClientSize.Y - TextSize.Y + 1) div 2;
- end
- else
- begin
- GlyphPos.X := (ClientSize.X - GlyphSize.X + 1) div 2;
- TextPos.X := (ClientSize.X - TextSize.X + 1) div 2;
- end;
-
- { if there is no text or no bitmap, then Spacing is irrelevant }
- if (TextSize.X = 0) or (GlyphSize.X = 0) then
- Spacing := 0;
-
- { adjust Margin and Spacing }
- if Margin = -1 then
- begin
- if Spacing = -1 then
- begin
- TotalSize := Point(GlyphSize.X + TextSize.X, GlyphSize.Y + TextSize.Y);
- if Layout in [blGlyphLeft, blGlyphRight] then
- Margin := (ClientSize.X - TotalSize.X) div 3
- else
- Margin := (ClientSize.Y - TotalSize.Y) div 3;
- Spacing := Margin;
- end
- else
- begin
- TotalSize := Point(GlyphSize.X + Spacing + TextSize.X, GlyphSize.Y +
- Spacing + TextSize.Y);
- if Layout in [blGlyphLeft, blGlyphRight] then
- Margin := (ClientSize.X - TotalSize.X + 1) div 2
- else
- Margin := (ClientSize.Y - TotalSize.Y + 1) div 2;
- end;
- end
- else
- begin
- if Spacing = -1 then
- begin
- TotalSize := Point(ClientSize.X - (Margin + GlyphSize.X), ClientSize.Y -
- (Margin + GlyphSize.Y));
- if Layout in [blGlyphLeft, blGlyphRight] then
- Spacing := (TotalSize.X - TextSize.X) div 2
- else
- Spacing := (TotalSize.Y - TextSize.Y) div 2;
- end;
- end;
-
- case Layout of
- blGlyphLeft:
- begin
- GlyphPos.X := Margin;
- TextPos.X := GlyphPos.X + GlyphSize.X + Spacing;
- end;
- blGlyphRight:
- begin
- GlyphPos.X := ClientSize.X - Margin - GlyphSize.X;
- TextPos.X := GlyphPos.X - Spacing - TextSize.X;
- end;
- blGlyphTop:
- begin
- GlyphPos.Y := Margin;
- TextPos.Y := GlyphPos.Y + GlyphSize.Y + Spacing;
- end;
- blGlyphBottom:
- begin
- GlyphPos.Y := ClientSize.Y - Margin - GlyphSize.Y;
- TextPos.Y := GlyphPos.Y - Spacing - TextSize.Y;
- end;
- end;
-
- { fixup the result variables }
- with GlyphPos do
- begin
- Inc(X, Client.Left + Offset.X);
- Inc(Y, Client.Top + Offset.Y);
- end;
- { Themed text is not shifted, but gets a different color. }
- { Themed text is not shifted, but gets a different color. }
- if fcUseThemes(ComboButton) then
- OffsetRect(TextBounds, TextPos.X + Client.Left, TextPos.Y + Client.Top)
- else
- OffsetRect(TextBounds, TextPos.X + Client.Left + Offset.X, TextPos.Y + Client.Top + Offset.Y);
- end;
-
- function TfcComboButtonGlyph.Draw(Canvas: TCanvas; const Client: TRect;
- const Offset: TPoint; const Caption: string; Layout: TButtonLayout;
- Margin, Spacing: Integer; State: TButtonState; Transparent: Boolean;
- BiDiFlags: LongInt): TRect;
- var
- GlyphPos: TPoint;
- begin
- CalcButtonLayout(Canvas, Client, Offset, Caption, Layout, Margin, Spacing,
- GlyphPos, Result, BiDiFlags);
- DrawButtonGlyph(Canvas, GlyphPos, State, Transparent);
- DrawButtonText(Canvas, Caption, Result, State, BiDiFlags);
- end;
- procedure TfcComboButtonActionLink.AssignClient(AClient: TObject);
- begin
- inherited AssignClient(AClient);
- FClient := AClient as TSpeedButton;
- end;
- function TfcComboButtonActionLink.IsCheckedLinked: Boolean;
- begin
- Result := inherited IsCheckedLinked and (FClient.GroupIndex <> 0) and
- FClient.AllowAllUp and (FClient.Down = (Action as TCustomAction).Checked);
- end;
- {$ifdef fcDelphi6Up}
- function TfcComboButtonActionLink.IsGroupIndexLinked: Boolean;
- begin
- Result := (FClient is TSpeedButton) and
- (TSpeedButton(FClient).GroupIndex = (Action as TCustomAction).GroupIndex);
- end;
- {$endif}
- procedure TfcComboButtonActionLink.SetChecked(Value: Boolean);
- begin
- if IsCheckedLinked then TSpeedButton(FClient).Down := Value;
- end;
- {$ifdef fcDelphi6Up}
- procedure TfcComboButtonActionLink.SetGroupIndex(Value: Integer);
- begin
- if IsGroupIndexLinked then TSpeedButton(FClient).GroupIndex := Value;
- end;
- {$endif}
- { TfcComboButton }
- constructor TfcComboButton.Create(AOwner: TComponent);
- begin
- FGlyph := TfcComboButtonGlyph.Create(self);
- TfcComboButtonGlyph(FGlyph).OnChange := GlyphChanged;
- inherited Create(AOwner);
- SetBounds(0, 0, 23, 22);
- ControlStyle := [csCaptureMouse, csDoubleClicks];
- ParentFont := True;
- Color := clBtnFace;
- FSpacing := 4;
- FMargin := -1;
- FLayout := blGlyphLeft;
- FTransparent := True;
- Inc(ButtonCount);
- end;
-
- destructor TfcComboButton.Destroy;
- begin
- Dec(ButtonCount);
- inherited Destroy;
- TfcComboButtonGlyph(FGlyph).Free;
- end;
- {$ifdef ThemeManager}
- procedure PerformEraseBackground(Control: TControl; DC: HDC);
- var
- LastOrigin: TPoint;
- begin
- GetWindowOrgEx(DC, LastOrigin);
- SetWindowOrgEx(DC, LastOrigin.X + Control.Left, LastOrigin.Y + Control.Top, nil);
- Control.Parent.Perform(WM_ERASEBKGND, Integer(DC), Integer(DC));
- SetWindowOrgEx(DC, LastOrigin.X, LastOrigin.Y, nil);
- end;
- {$endif}
- // Should likely support button style as well as combobutton
- procedure TfcComboButton.Paint;
- const
- DownStyles: array[Boolean] of Integer = (BDR_RAISEDINNER, BDR_SUNKENOUTER);
- FillStyles: array[Boolean] of Integer = (BF_MIDDLE, 0);
- var
- PaintRect: TRect;
- DrawFlags: Integer;
- Offset: TPoint;
- {$ifdef fcUseThemeManager}
- ComboBox: TThemedCombobox;
- Details: TThemedElementDetails;
- W, X, Y: Integer;
- R: TRect;
- Pressed: boolean;
- {$endif}
- begin
- if not Enabled then
- begin
- FState := bsDisabled;
- FDragging := False;
- end
- else if FState = bsDisabled then
- if FDown and (GroupIndex <> 0) then
- FState := bsExclusive
- else
- FState := bsUp;
- Canvas.Font := Self.Font;
- if fcUseThemes(self) then
- begin
- {$ifdef fcUseThemeManager}
- PerformEraseBackground(Self, Canvas.Handle);
- if Ellipsis then begin
- Pressed:= FState in [bsDown, bsExclusive];
- if Pressed then
- Details := ThemeServices.GetElementDetails(tbPushButtonPressed)
- else
- if MouseInControl then
- Details := ThemeServices.GetElementDetails(tbPushButtonHot)
- else
- Details := ThemeServices.GetElementDetails(tbPushButtonNormal);
- PaintRect := ClientRect;
- ThemeServices.DrawElement(Canvas.Handle, Details, PaintRect);
- R:= PaintRect;
- X := R.Left + ((R.Right - R.Left) shr 1) - 1;
- Y := R.Top + ((R.Bottom - R.Top) shr 1) - 1;
- W := ClientWidth shr 3;
- if W = 0 then W := 1;
- PatBlt(Canvas.Handle, X, Y, W, W, BLACKNESS);
- PatBlt(Canvas.handle, X - (W * 2), Y, W, W, BLACKNESS);
- PatBlt(Canvas.Handle, X + (W * 2), Y, W, W, BLACKNESS);
- end
- else begin
- if not Enabled then // Not ellpisis
- ComboBox:= tcDropDownButtonDisabled
- else
- if FState in [bsDown, bsExclusive] then
- ComboBox:= tcDropDownButtonPressed
- else
- if MouseInControl then
- ComboBox:= tcDropDownButtonHot
- else
- ComboBox:= tcDropDownButtonNormal;
- PaintRect := ClientRect;
- if (parent.parent<>nil) and (parent.parent.parent<>nil) and
- not fcIsClass(parent.parent.parent.classtype, 'TCustomGrid') then
- begin
- PaintRect.Top:= PaintRect.Top-1;
- PaintRect.Bottom:= PaintRect.Bottom+1;
- PaintRect.Right:= PaintRect.Right+1;
- PaintRect.Left:= PaintRect.Left+1;
- end
- else begin // parent of combo is grid
- PaintRect.Bottom:= PaintRect.Bottom+1;
- end;
- Details := ThemeServices.GetElementDetails(ComboBox);
- ThemeServices.DrawElement(Canvas.Handle, Details, PaintRect);
- PaintRect := ThemeServices.ContentRect(Canvas.Handle, Details, PaintRect);
- if ComboBox = tcDropDownButtonPressed then
- begin
- Offset := Point(0, 0);
- end
- else
- Offset := Point(0, 0);
- TfcComboButtonGlyph(FGlyph).Draw(Canvas, PaintRect, Offset, Caption, FLayout, FMargin, FSpacing, FState, Transparent,
- DrawTextBiDiModeFlags(0));
- end
- {$endif}
- end
- else
- begin
- PaintRect := Rect(0, 0, Width, Height);
- if not FFlat then
- begin
- DrawFlags := DFCS_BUTTONPUSH or DFCS_ADJUSTRECT;
- if FState in [bsDown, bsExclusive] then
- DrawFlags := DrawFlags or DFCS_PUSHED;
- DrawFrameControl(Canvas.Handle, PaintRect, DFC_BUTTON, DrawFlags);
- end
- else
- begin
- if (FState in [bsDown, bsExclusive]) or
- (FMouseInControl and (FState <> bsDisabled)) or
- (csDesigning in ComponentState) then
- DrawEdge(Canvas.Handle, PaintRect, DownStyles[FState in [bsDown, bsExclusive]],
- FillStyles[Transparent] or BF_RECT)
- else if not Transparent then
- begin
- Canvas.Brush.Color := Color;
- Canvas.FillRect(PaintRect);
- end;
- InflateRect(PaintRect, -1, -1);
- end;
- if FState in [bsDown, bsExclusive] then
- begin
- if (FState = bsExclusive) and (not FFlat or not FMouseInControl) then
- begin
- Canvas.Brush.Bitmap := AllocPatternBitmap(clBtnFace, clBtnHighlight);
- Canvas.FillRect(PaintRect);
- end;
- Offset.X := 1;
- Offset.Y := 1;
- end
- else
- begin
- Offset.X := 0;
- Offset.Y := 0;
- end;
- TfcComboButtonGlyph(FGlyph).Draw(Canvas, PaintRect, Offset, Caption, FLayout, FMargin,
- FSpacing, FState, Transparent, DrawTextBiDiModeFlags(0));
- end;
- end;
- procedure TfcComboButton.UpdateTracking;
- var
- P: TPoint;
- begin
- if FFlat then
- begin
- if Enabled then
- begin
- GetCursorPos(P);
- FMouseInControl := not (FindDragTarget(P, True) = Self);
- if FMouseInControl then
- Perform(CM_MOUSELEAVE, 0, 0)
- else
- Perform(CM_MOUSEENTER, 0, 0);
- end;
- end;
- end;
-
- procedure TfcComboButton.Loaded;
- var
- State: TButtonState;
- begin
- inherited Loaded;
- if Enabled then
- State := bsUp
- else
- State := bsDisabled;
- TfcComboButtonGlyph(FGlyph).CreateButtonGlyph(State);
- end;
- procedure TfcComboButton.MouseDown(Button: TMouseButton; Shift: TShiftState;
- X, Y: Integer);
- begin
- inherited MouseDown(Button, Shift, X, Y);
- if (Button = mbLeft) and Enabled then
- begin
- if not FDown then
- begin
- FState := bsDown;
- Invalidate;
- end;
- FDragging := True;
- end;
- end;
- procedure TfcComboButton.MouseMove(Shift: TShiftState; X, Y: Integer);
- var
- NewState: TButtonState;
- begin
- inherited MouseMove(Shift, X, Y);
- if FDragging then
- begin
- if not FDown then NewState := bsUp
- else NewState := bsExclusive;
- if (X >= 0) and (X < ClientWidth) and (Y >= 0) and (Y <= ClientHeight) then
- if FDown then NewState := bsExclusive else NewState := bsDown;
- if NewState <> FState then
- begin
- FState := NewState;
- Invalidate;
- end;
- end
- else if not FMouseInControl then
- UpdateTracking;
- end;
-
- procedure TfcComboButton.MouseUp(Button: TMouseButton; Shift: TShiftState;
- X, Y: Integer);
- var
- DoClick: Boolean;
- begin
- inherited MouseUp(Button, Shift, X, Y);
- if FDragging then
- begin
- FDragging := False;
- DoClick := (X >= 0) and (X < ClientWidth) and (Y >= 0) and (Y <= ClientHeight);
- if FGroupIndex = 0 then
- begin
- { Redraw face in-case mouse is captured }
- FState := bsUp;
- FMouseInControl := False;
- if DoClick and not (FState in [bsExclusive, bsDown]) then
- Invalidate;
- end
- else
- if DoClick then
- begin
- SetDown(not FDown);
- if FDown then Repaint;
- end
- else
- begin
- if FDown then FState := bsExclusive;
- Repaint;
- end;
- if DoClick then Click;
- UpdateTracking;
- end;
- end;
-
- procedure TfcComboButton.Click;
- begin
- inherited Click;
- end;
- function TfcComboButton.GetPalette: HPALETTE;
- begin
- Result := Glyph.Palette;
- end;
- function TfcComboButton.GetActionLinkClass: TControlActionLinkClass;
- begin
- Result := TfcComboButtonActionLink;
- end;
- function TfcComboButton.GetGlyph: TBitmap;
- begin
- Result := TfcComboButtonGlyph(FGlyph).Glyph;
- end;
- procedure TfcComboButton.SetGlyph(Value: TBitmap);
- begin
- TfcComboButtonGlyph(FGlyph).Glyph := Value;
- Invalidate;
- end;
-
- function TfcComboButton.GetNumGlyphs: TNumGlyphs;
- begin
- Result := TfcComboButtonGlyph(FGlyph).NumGlyphs;
- end;
-
- procedure TfcComboButton.SetNumGlyphs(Value: TNumGlyphs);
- begin
- if Value < 0 then Value := 1
- else if Value > 4 then Value := 4;
- if Value <> TfcComboButtonGlyph(FGlyph).NumGlyphs then
- begin
- TfcComboButtonGlyph(FGlyph).NumGlyphs := Value;
- Invalidate;
- end;
- end;
-
- procedure TfcComboButton.GlyphChanged(Sender: TObject);
- begin
- Invalidate;
- end;
-
- procedure TfcComboButton.UpdateExclusive;
- var
- Msg: TMessage;
- begin
- if (FGroupIndex <> 0) and (Parent <> nil) then
- begin
- Msg.Msg := CM_BUTTONPRESSED;
- Msg.WParam := FGroupIndex;
- Msg.LParam := Longint(Self);
- Msg.Result := 0;
- Parent.Broadcast(Msg);
- end;
- end;
- procedure TfcComboButton.SetDown(Value: Boolean);
- begin
- if FGroupIndex = 0 then Value := False;
- if Value <> FDown then
- begin
- if FDown and (not FAllowAllUp) then Exit;
- FDown := Value;
- if Value then
- begin
- if FState = bsUp then Invalidate;
- FState := bsExclusive
- end
- else
- begin
- FState := bsUp;
- Repaint;
- end;
- if Value then UpdateExclusive;
- end;
- end;
-
- procedure TfcComboButton.SetFlat(Value: Boolean);
- begin
- if Value <> FFlat then
- begin
- FFlat := Value;
- Invalidate;
- end;
- end;
-
- procedure TfcComboButton.SetGroupIndex(Value: Integer);
- begin
- if FGroupIndex <> Value then
- begin
- FGroupIndex := Value;
- UpdateExclusive;
- end;
- end;
-
- procedure TfcComboButton.SetLayout(Value: TButtonLayout);
- begin
- if FLayout <> Value then
- begin
- FLayout := Value;
- Invalidate;
- end;
- end;
-
- procedure TfcComboButton.SetMargin(Value: Integer);
- begin
- if (Value <> FMargin) and (Value >= -1) then
- begin
- FMargin := Value;
- Invalidate;
- end;
- end;
-
- procedure TfcComboButton.SetSpacing(Value: Integer);
- begin
- if Value <> FSpacing then
- begin
- FSpacing := Value;
- Invalidate;
- end;
- end;
- procedure TfcComboButton.SetTransparent(Value: Boolean);
- begin
- if Value <> FTransparent then
- begin
- FTransparent := Value;
- if Value then
- ControlStyle := ControlStyle - [csOpaque] else
- ControlStyle := ControlStyle + [csOpaque];
- Invalidate;
- end;
- end;
- procedure TfcComboButton.SetAllowAllUp(Value: Boolean);
- begin
- if FAllowAllUp <> Value then
- begin
- FAllowAllUp := Value;
- UpdateExclusive;
- end;
- end;
-
- procedure TfcComboButton.WMLButtonDblClk(var Message: TWMLButtonDown);
- begin
- inherited;
- if FDown then DblClick;
- end;
- procedure TfcComboButton.CMEnabledChanged(var Message: TMessage);
- const
- NewState: array[Boolean] of TButtonState = (bsDisabled, bsUp);
- begin
- TfcComboButtonGlyph(FGlyph).CreateButtonGlyph(NewState[Enabled]);
- UpdateTracking;
- Repaint;
- end;
-
- procedure TfcComboButton.CMButtonPressed(var Message: TMessage);
- var
- Sender: TfcComboButton;
- begin
- if Message.WParam = FGroupIndex then
- begin
- Sender := TfcComboButton(Message.LParam);
- if Sender <> Self then
- begin
- if Sender.Down and FDown then
- begin
- FDown := False;
- FState := bsUp;
- if (Action is TCustomAction) then
- TCustomAction(Action).Checked := False;
- Invalidate;
- end;
- FAllowAllUp := Sender.AllowAllUp;
- end;
- end;
- end;
- procedure TfcComboButton.CMDialogChar(var Message: TCMDialogChar);
- begin
- with Message do
- if IsAccel(CharCode, Caption) and Enabled and Visible and
- (Parent <> nil) and Parent.Showing then
- begin
- Click;
- Result := 1;
- end else
- inherited;
- end;
-
- procedure TfcComboButton.CMFontChanged(var Message: TMessage);
- begin
- Invalidate;
- end;
-
- procedure TfcComboButton.CMTextChanged(var Message: TMessage);
- begin
- Invalidate;
- end;
-
- procedure TfcComboButton.CMSysColorChange(var Message: TMessage);
- begin
- with TfcComboButtonGlyph(FGlyph) do
- begin
- Invalidate;
- CreateButtonGlyph(FState);
- end;
- end;
-
- procedure TfcComboButton.CMMouseEnter(var Message: TMessage);
- var
- NeedRepaint: Boolean;
- begin
- inherited;
- { Don't draw a border if DragMode <> dmAutomatic since this button is meant to
- be used as a dock client. }
- NeedRepaint := FFlat and not FMouseInControl and Enabled and (DragMode <> dmAutomatic) and (GetCapture = 0);
- { Windows XP introduced hot states also for non-flat buttons. }
- if (NeedRepaint or fcUseThemes(self)) and not (csDesigning in ComponentState) then
- begin
- FMouseInControl := True;
- if Enabled then
- Repaint;
- end;
- end;
- procedure TfcComboButton.CMMouseLeave(var Message: TMessage);
- var
- NeedRepaint: Boolean;
- begin
- inherited;
- NeedRepaint := FFlat and FMouseInControl and Enabled and not FDragging;
- { Windows XP introduced hot states also for non-flat buttons. }
- if NeedRepaint or fcUseThemes(self) then
- begin
- FMouseInControl := False;
- if Enabled then
- Repaint;
- end;
- end;
- procedure TfcComboButton.ActionChange(Sender: TObject; CheckDefaults: Boolean);
- procedure CopyImage(ImageList: TCustomImageList; Index: Integer);
- begin
- with Glyph do
- begin
- Width := ImageList.Width;
- Height := ImageList.Height;
- Canvas.Brush.Color := clFuchsia;//! for lack of a better color
- Canvas.FillRect(Rect(0,0, Width, Height));
- ImageList.Draw(Canvas, 0, 0, Index);
- end;
- end;
- begin
- inherited ActionChange(Sender, CheckDefaults);
- if Sender is TCustomAction then
- with TCustomAction(Sender) do
- begin
- if CheckDefaults or (Self.GroupIndex = 0) then
- Self.GroupIndex := GroupIndex;
- { Copy image from action's imagelist }
- if (Glyph.Empty) and (ActionList <> nil) and (ActionList.Images <> nil) and
- (ImageIndex >= 0) and (ImageIndex < ActionList.Images.Count) then
- CopyImage(ActionList.Images, ImageIndex);
- end;
- end;
- initialization
- // FillChar(BitBtnGlyphs, SizeOf(BitBtnGlyphs), 0);
- finalization
- // DestroyLocals;
- end.