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- unit CoolButton;
-
- {$S-,W-,R-}
- {$C PRELOAD}
-
- interface
-
- uses Windows, Messages, Classes, Controls, Forms, Graphics, StdCtrls,
- ExtCtrls, CommCtrl;
-
- type
- TButtonLayout = (blGlyphLeft, blGlyphRight, blGlyphTop, blGlyphBottom);
- TButtonState = (bsUp, bsDisabled, bsDown, bsExclusive);
- TButtonStyle = (bsAutoDetect, bsWin31, bsNew);
- TNumGlyphs = 1..4;
-
- TCoolButton = class(TGraphicControl)
- private
- FGroupIndex: Integer;
- FGlyph: Pointer;
- FDown: Boolean;
- FDragging: Boolean;
- FAllowAllUp: Boolean;
- FLayout: TButtonLayout;
- FSpacing: Integer;
- FMargin: Integer;
- FMouseInControl: Boolean;
- // FMouseinMask: 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 SetAllowAllUp(Value: Boolean);
- procedure SetGroupIndex(Value: Integer);
- procedure SetLayout(Value: TButtonLayout);
- procedure SetSpacing(Value: Integer);
- 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 CMMouseLeave(var Message: TMessage); message CM_MOUSELEAVE;
- procedure WMEraseBkgnd( var message:TWMEraseBkgnd); message WM_ERASEBKGND;
- procedure WMPaint( var message:TWMPaint); message WM_PAINT;
- procedure WMNCPaint( var message:TWMNCPaint); message WM_NCPAINT;
- protected
- FState: TButtonState;
- 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;
- public
- constructor Create(AOwner: TComponent); override;
- destructor Destroy; override;
- procedure Click; override;
- published
- property AllowAllUp: Boolean read FAllowAllUp write SetAllowAllUp default False;
- property GroupIndex: Integer read FGroupIndex write SetGroupIndex default 0;
- property Down: Boolean read FDown write SetDown default False;
- property Caption;
- property Enabled;
- 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 4;
- property ParentFont;
- property ParentShowHint;
- property ShowHint;
- property Spacing: Integer read FSpacing write SetSpacing default 4;
- property Visible;
- property OnClick;
- property OnDblClick;
- property OnMouseDown;
- property OnMouseMove;
- property OnMouseUp;
- end;
-
- function DrawButtonFace(Canvas: TCanvas; const Client: TRect;
- BevelWidth: Integer; Style: TButtonStyle; IsRounded, IsDown,
- IsFocused: Boolean): TRect;
-
- procedure Register;
-
- implementation
-
- uses Consts, SysUtils;
-
-
- procedure Register;
- begin
- RegisterComponents('Cool!', [TCoolButton]);
- end;
-
-
-
- { DrawButtonFace - returns the remaining usable area inside the Client rect.}
- function DrawButtonFace(Canvas: TCanvas; const Client: TRect;
- BevelWidth: Integer; Style: TButtonStyle; IsRounded, IsDown,
- IsFocused: Boolean): TRect;
- var
- NewStyle: Boolean;
- R: TRect;
- DC: THandle;
- begin
- NewStyle := ((Style = bsAutoDetect) and NewStyleControls) or (Style = bsNew);
-
- R := Client;
- with Canvas do
- begin
- if NewStyle then
- begin
- Brush.Color := clBtnFace;
- Brush.Style := bsSolid;
- DC := Canvas.Handle; { Reduce calls to GetHandle }
-
- if IsDown then
- begin { DrawEdge is faster than Polyline }
- DrawEdge(DC, R, BDR_SUNKENINNER, BF_TOPLEFT); { black }
- DrawEdge(DC, R, BDR_SUNKENOUTER, BF_BOTTOMRIGHT); { btnhilite }
- Dec(R.Bottom);
- Dec(R.Right);
- Inc(R.Top);
- Inc(R.Left);
- DrawEdge(DC, R, BDR_SUNKENOUTER, BF_TOPLEFT or BF_MIDDLE); { btnshadow }
- end
- else
- begin
- DrawEdge(DC, R, BDR_RAISEDOUTER, BF_BOTTOMRIGHT); { black }
- Dec(R.Bottom);
- Dec(R.Right);
- DrawEdge(DC, R, BDR_RAISEDINNER, BF_TOPLEFT); { btnhilite }
- Inc(R.Top);
- Inc(R.Left);
- DrawEdge(DC, R, BDR_RAISEDINNER, BF_BOTTOMRIGHT or BF_MIDDLE); { btnshadow }
- end;
- end
- else
- begin
- Pen.Color := clWindowFrame;
- Brush.Color := clBtnFace;
- Brush.Style := bsSolid;
- Rectangle(R.Left, R.Top, R.Right, R.Bottom);
-
- { round the corners - only applies to Win 3.1 style buttons }
- if IsRounded then
- begin
- Pixels[R.Left, R.Top] := clBtnFace;
- Pixels[R.Left, R.Bottom - 1] := clBtnFace;
- Pixels[R.Right - 1, R.Top] := clBtnFace;
- Pixels[R.Right - 1, R.Bottom - 1] := clBtnFace;
- end;
-
- if IsFocused then
- begin
- InflateRect(R, -1, -1);
- Brush.Style := bsClear;
- Rectangle(R.Left, R.Top, R.Right, R.Bottom);
- end;
-
- InflateRect(R, -1, -1);
- if not IsDown then
- Frame3D(Canvas, R, clBtnHighlight, clBtnShadow, BevelWidth)
- else
- begin
- Pen.Color := clBtnShadow;
- PolyLine([Point(R.Left, R.Bottom - 1), Point(R.Left, R.Top),
- Point(R.Right, R.Top)]);
- end;
- end;
- end;
-
- Result := Rect(Client.Left + 1, Client.Top + 1,
- Client.Right - 2, Client.Bottom - 2);
- if IsDown then OffsetRect(Result, 1, 1);
- end;
-
-
- type
- 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;
-
- 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;
-
- TButtonGlyph = class
- private
- FOriginal: TBitmap;
- FGlyphList: TGlyphList;
- FIndexs: array[TButtonState] of Integer;
- FTransparentColor: TColor;
- FNumGlyphs: TNumGlyphs;
- FOnChange: TNotifyEvent;
- 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);
- procedure CalcButtonLayout(Canvas: TCanvas; const Client: TRect;
- const Offset: TPoint; const Caption: string; Layout: TButtonLayout;
- Margin, Spacing: Integer; var GlyphPos: TPoint; var TextBounds: TRect);
- public
- constructor Create;
- 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): TRect;
- property Glyph: TBitmap read FOriginal write SetGlyph;
- property NumGlyphs: TNumGlyphs read FNumGlyphs write SetNumGlyphs;
- property OnChange: TNotifyEvent read FOnChange write FOnChange;
- 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;
- Pattern: TBitmap = nil;
- ButtonCount: Integer = 0;
-
- procedure CreateBrushPattern;
- var
- X, Y: Integer;
- begin
- Pattern := TBitmap.Create;
- Pattern.Width := 8;
- Pattern.Height := 8;
- with Pattern.Canvas do
- begin
- Brush.Style := bsSolid;
- Brush.Color := clBtnFace;
- FillRect(Rect(0, 0, Pattern.Width, Pattern.Height));
- for Y := 0 to 7 do
- for X := 0 to 7 do
- if (Y mod 2) = (X mod 2) then { toggles between even/odd pixles }
- Pixels[X, Y] := clBtnHighlight; { on even/odd rows }
- end;
- end;
-
-
- { TButtonGlyph }
-
- constructor TButtonGlyph.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;
- end;
-
- destructor TButtonGlyph.Destroy;
- begin
- FOriginal.Free;
- Invalidate;
- if Assigned(GlyphCache) and GlyphCache.Empty then
- begin
- GlyphCache.Free;
- GlyphCache := nil;
- end;
- inherited Destroy;
- end;
-
- procedure TButtonGlyph.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 TButtonGlyph.GlyphChanged(Sender: TObject);
- begin
- if Sender = FOriginal then
- begin
- FTransparentColor := FOriginal.TransparentColor;
- Invalidate;
- if Assigned(FOnChange) then FOnChange(Self);
- end;
- end;
-
- procedure TButtonGlyph.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 TButtonGlyph.SetNumGlyphs(Value: TNumGlyphs);
- begin
- if (Value <> FNumGlyphs) and (Value > 0) then
- begin
- Invalidate;
- FNumGlyphs := Value;
- GlyphChanged(Glyph);
- end;
- end;
-
- function TButtonGlyph.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 TButtonGlyph.DrawButtonGlyph(Canvas: TCanvas; const GlyphPos: TPoint;
- State: TButtonState; Transparent: Boolean);
- var
- Index: Integer;
- begin
- if FOriginal = nil then Exit;
- if (FOriginal.Width = 0) or (FOriginal.Height = 0) then Exit;
- Index := CreateButtonGlyph(State);
- with GlyphPos do
- if Transparent or (State = bsExclusive) then
- ImageList_DrawEx(FGlyphList.Handle, Index, Canvas.Handle, X, Y, 0, 0,
- clNone, clNone, ILD_Transparent)
- else
- ImageList_DrawEx(FGlyphList.Handle, Index, Canvas.Handle, X, Y, 0, 0,
- clNone, clNone, ILD_Transparent);
- end;
-
- procedure TButtonGlyph.DrawButtonText(Canvas: TCanvas; const Caption: string;
- TextBounds: TRect; State: TButtonState);
- 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, 0);
- OffsetRect(TextBounds, -1, -1);
- Font.Color := clBtnShadow;
- DrawText(Handle, PChar(Caption), Length(Caption), TextBounds, 0);
- end else
- DrawText(Handle, PChar(Caption), Length(Caption), TextBounds,
- DT_CENTER or DT_VCENTER or DT_SINGLELINE);
- end;
- end;
-
- procedure TButtonGlyph.CalcButtonLayout(Canvas: TCanvas; const Client: TRect;
- const Offset: TPoint; const Caption: string; Layout: TButtonLayout; Margin,
- Spacing: Integer; var GlyphPos: TPoint; var TextBounds: TRect);
- var
- TextPos: TPoint;
- ClientSize, GlyphSize, TextSize: TPoint;
- TotalSize: TPoint;
- begin
- { 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);
- 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 Layout in [blGlyphLeft, blGlyphRight] then
- begin
- GlyphPos.Y := 0;
- TextPos.Y := (ClientSize.Y - TextSize.Y + 1) div 2;
- end
- else
- begin
- GlyphPos.X := 0;
- 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;
- OffsetRect(TextBounds, TextPos.X + Client.Left + Offset.X,
- TextPos.Y + Client.Top + Offset.X);
- end;
-
- function TButtonGlyph.Draw(Canvas: TCanvas; const Client: TRect;
- const Offset: TPoint; const Caption: string; Layout: TButtonLayout;
- Margin, Spacing: Integer; State: TButtonState; Transparent: Boolean): TRect;
- var
- GlyphPos: TPoint;
- begin
- CalcButtonLayout(Canvas, Client, Offset, Caption, Layout, Margin, Spacing,
- GlyphPos, Result);
- DrawButtonGlyph(Canvas, GlyphPos, State, Transparent);
- DrawButtonText(Canvas, Caption, Result, State);
- end;
-
- { TCoolButton }
-
- constructor TCoolButton.Create(AOwner: TComponent);
- begin
- inherited Create(AOwner);
- SetBounds(0, 0, 25, 25);
- ControlStyle := [csCaptureMouse, csOpaque, csDoubleClicks];
- FGlyph := TButtonGlyph.Create;
- TButtonGlyph(FGlyph).OnChange := GlyphChanged;
- ParentFont := True;
- FSpacing := 4;
- FMargin := -1;
- FLayout := blGlyphLeft;
- Inc(ButtonCount);
- numglyphs:=4;
- end;
-
- destructor TCoolButton.Destroy;
- begin
- TButtonGlyph(FGlyph).Free;
- Dec(ButtonCount);
- if ButtonCount = 0 then
- begin
- Pattern.Free;
- Pattern := nil;
- end;
- inherited Destroy;
- end;
-
- procedure TCoolButton.Paint;
- const
- DownStyles: array[Boolean] of Integer = (BDR_RAISEDINNER, BDR_SUNKENOUTER);
- FillStyles: array[Boolean] of Integer = (0, 0);
- var
- PaintRect: TRect;
- Offset: TPoint;
- begin
- { if not Enabled then
- begin
- FState := bsDisabled;
- FDragging := False;
- end
- else if FState = bsDisabled then
- begin
- if FDown and (GroupIndex <> 0) then
- FState := bsExclusive
- else
- FState := bsUp;
- end else
- if FState<>bsDown then if FMouseIncontrol then FState:=bsExclusive else FState:=bsUp;
- }
- if Enabled then
- begin
- if FMouseInControl then
- begin
- if FState<>bsDown then FState:=bsExclusive;
- end else Fstate:=bsUp;
- end else FState:=bsDisabled;
- Canvas.Font := Self.Font;
- PaintRect := Rect(0, 0, Width, Height);
- if (FState in [bsDown, bsExclusive]) or
- (FMouseInControl and (FState <> bsDisabled)) or
- (csDesigning in ComponentState) then
- if csDesigning in ComponentState then DrawEdge(Canvas.Handle, PaintRect, DownStyles[FState in [bsDown, bsExclusive]],
- FillStyles[true] or BF_RECT);
- if FState in [bsDown, bsExclusive] then
- begin
- if (FState = bsExclusive) and (not FMouseInControl) then
- begin
- // if Pattern = nil then CreateBrushPattern;
- // Canvas.Brush.Bitmap := Pattern;
- // Canvas.FillRect(PaintRect);
- end;
- Offset.X := 0;
- Offset.Y := 0;
- end
- else
- begin
- Offset.X := 0;
- Offset.Y := 0;
- end;
- TButtonGlyph(FGlyph).Draw(Canvas, PaintRect, Offset, Caption, FLayout, FMargin,
- FSpacing, FState,true);
- end;
-
- procedure TCoolButton.UpdateTracking;
- var
- P: TPoint;
- begin
- if Enabled then
- begin
- GetCursorPos(P);
- FMouseInControl := not (FindDragTarget(P, True) = Self);
- if FMouseInControl then
- Perform(CM_MOUSELEAVE, 0, 0);
- end;
- end;
-
- procedure TCoolButton.Loaded;
- var
- State: TButtonState;
- begin
- inherited Loaded;
- if Enabled then
- State := bsUp
- else
- State := bsDisabled;
- TButtonGlyph(FGlyph).CreateButtonGlyph(State);
- end;
-
- procedure TCoolButton.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 TCoolButton.MouseMove(Shift: TShiftState; X, Y: Integer);
- var
- NewState : TButtonState;
- P, P2 : TPoint;
- OldState : Boolean;
-
- begin
- OldState := FMouseInControl;
- GetCursorPos(P);
- P2 := ScreenToClient (P);
- FMouseInControl := (TButtonGlyph(FGlyph).Glyph.Canvas.Pixels[P2.x, P2.y] <> TButtonGlyph(FGlyph).Glyph.Canvas.Pixels[0, Glyph.Height - 1]) and
- (P2.X < Glyph.Width) and (P2.Y < Glyph.Height) and (FindDragTarget(P, True) = Self);
- 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;
- end;
- end;
- If (OldState <> FMouseInControl) then Invalidate;
- end;
-
- procedure TCoolButton.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 TCoolButton.Click;
- begin
- inherited Click;
- end;
-
- function TCoolButton.GetPalette: HPALETTE;
- begin
- Result := Glyph.Palette;
- end;
-
- function TCoolButton.GetGlyph: TBitmap;
- begin
- Result := TButtonGlyph(FGlyph).Glyph;
- end;
-
- procedure TCoolButton.SetGlyph(Value: TBitmap);
- begin
- TButtonGlyph(FGlyph).Glyph := Value;
- Invalidate;
- end;
-
- function TCoolButton.GetNumGlyphs: TNumGlyphs;
- begin
- Result := TButtonGlyph(FGlyph).NumGlyphs;
- end;
-
- procedure TCoolButton.SetNumGlyphs(Value: TNumGlyphs);
- begin
- if Value < 0 then Value := 1
- else if Value > 4 then Value := 4;
- if Value <> TButtonGlyph(FGlyph).NumGlyphs then
- begin
- TButtonGlyph(FGlyph).NumGlyphs := Value;
- Invalidate;
- end;
- end;
-
- procedure TCoolButton.GlyphChanged(Sender: TObject);
- begin
- Invalidate;
- end;
-
- procedure TCoolButton.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 TCoolButton.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 TCoolButton.SetGroupIndex(Value: Integer);
- begin
- if FGroupIndex <> Value then
- begin
- FGroupIndex := Value;
- UpdateExclusive;
- end;
- end;
-
- procedure TCoolButton.SetLayout(Value: TButtonLayout);
- begin
- if FLayout <> Value then
- begin
- FLayout := Value;
- Invalidate;
- end;
- end;
-
- procedure TCoolButton.SetMargin(Value: Integer);
- begin
- if (Value <> FMargin) and (Value >= -1) then
- begin
- FMargin := Value;
- Invalidate;
- end;
- end;
-
- procedure TCoolButton.SetSpacing(Value: Integer);
- begin
- if Value <> FSpacing then
- begin
- FSpacing := Value;
- Invalidate;
- end;
- end;
-
- procedure TCoolButton.SetAllowAllUp(Value: Boolean);
- begin
- if FAllowAllUp <> Value then
- begin
- FAllowAllUp := Value;
- UpdateExclusive;
- end;
- end;
-
- procedure TCoolButton.WMLButtonDblClk(var Message: TWMLButtonDown);
- begin
- inherited;
- if FDown then DblClick;
- end;
-
- procedure TCoolButton.CMEnabledChanged(var Message: TMessage);
- const
- NewState: array[Boolean] of TButtonState = (bsDisabled, bsUp);
- begin
- TButtonGlyph(FGlyph).CreateButtonGlyph(NewState[Enabled]);
- UpdateTracking;
- Repaint;
- end;
-
- procedure TCoolButton.CMButtonPressed(var Message: TMessage);
- var
- Sender: TCoolButton;
- begin
- if Message.WParam = FGroupIndex then
- begin
- Sender := TCoolButton(Message.LParam);
- if Sender <> Self then
- begin
- if Sender.Down and FDown then
- begin
- FDown := False;
- FState := bsUp;
- Invalidate;
- end;
- FAllowAllUp := Sender.AllowAllUp;
- end;
- end;
- end;
-
- procedure TCoolButton.CMDialogChar(var Message: TCMDialogChar);
- begin
- with Message do
- if IsAccel(CharCode, Caption) and Enabled then
- begin
- Click;
- Result := 1;
- end else
- inherited;
- end;
-
- procedure TCoolButton.CMFontChanged(var Message: TMessage);
- begin
- Invalidate;
- end;
-
- procedure TCoolButton.CMTextChanged(var Message: TMessage);
- begin
- Invalidate;
- end;
-
- procedure TCoolButton.CMSysColorChange(var Message: TMessage);
- begin
- with TButtonGlyph(FGlyph) do
- begin
- Invalidate;
- CreateButtonGlyph(FState);
- end;
- end;
-
- procedure TCoolButton.WMEraseBkgnd( var message:TWMEraseBkgnd);
- begin
- message.Result:=0;
- end;
-
-
-
- procedure TCoolButton.CMMouseLeave(var Message: TMessage);
- begin
- inherited;
- if FMouseInControl and Enabled and not FDragging then
- begin
- FMouseInControl := False;
- Invalidate;
- end;
- end;
-
- procedure TCoolButton.WMPaint( var message:TWMPaint);
- begin
- Paint;
- message.Result:=0;
- end;
- procedure TCoolButton.WMNCPaint( var message:TWMNCPaint);
- begin
- Paint;
- message.Result:=0;
- end;
-
-
- end.
-