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| {%MainUnit ../buttons.pp}
{******************************************************************************
TCustomSpeedButton
******************************************************************************
*****************************************************************************
* *
* This file is part of the Lazarus Component Library (LCL) *
* *
* See the file COPYING.modifiedLGPL.txt, included in this distribution, *
* for details about the copyright. *
* *
* This program is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. *
* *
*****************************************************************************
}
{$IFOPT C-}
// Uncomment for local trace
// {$C+}
// {$DEFINE ASSERT_IS_ON}
{$ENDIF}
const
UpState: array[Boolean] of TButtonState =
(
{False} bsUp, // mouse in control = false
{True } bsHot // mouse in contorl = true
);
{------------------------------------------------------------------------------
Method: TCustomSpeedButton.Create
Params: none
Returns: Nothing
Constructor for the class.
------------------------------------------------------------------------------}
constructor TCustomSpeedButton.Create(AOwner: TComponent);
begin
inherited Create(AOwner);
FGlyph := TButtonGlyph.Create;
FGlyph.IsDesigning := csDesigning in ComponentState;
FGlyph.ShowMode := gsmAlways;
FGlyph.SetTransparentMode(gtmTransparent);
FGlyph.OnChange := @GlyphChanged;
with GetControlClassDefaultSize do
SetInitialBounds(0, 0, CX, CY);
ControlStyle := ControlStyle + [csCaptureMouse]-[csSetCaption, csClickEvents, csOpaque];
FLayout := blGlyphLeft;
FAllowAllUp := False;
FMouseInControl := False;
FDragging := False;
FShowAccelChar := True;
FSpacing := 4;
FMargin := -1;
Color := clBtnFace;
FShowCaption := true;
end;
{------------------------------------------------------------------------------
Method: TCustomSpeedButton.Destroy
Params: None
Returns: Nothing
Destructor for the class.
------------------------------------------------------------------------------}
destructor TCustomSpeedButton.Destroy;
begin
FreeAndNil(FGlyph);
inherited Destroy;
end;
{------------------------------------------------------------------------------
Method: TCustomSpeedButton.FindDownButton: TCustomSpeedButton;
Searches the speed button with Down=true and the same GroupIndex.
------------------------------------------------------------------------------}
function TCustomSpeedButton.FindDownButton: TCustomSpeedButton;
function FindDown(AWinControl: TWinControl): TCustomSpeedButton;
var
i: Integer;
Child: TControl;
Button: TCustomSpeedButton;
begin
if AWinControl=nil then exit(nil);
for i:=0 to AWinControl.ControlCount-1 do begin
Child:=AWinControl.Controls[i];
if Child is TCustomSpeedButton then begin
Button:=TCustomSpeedButton(Child);
if (Button.GroupIndex=GroupIndex)
and (Button.Down) then
exit(Button);
end;
if Child is TWinControl then begin
Result:=FindDown(TWinControl(Child));
if Result<>nil then exit;
end;
end;
Result:=nil;
end;
begin
if Down or (GroupIndex=0) then exit(Self);
Result:=FindDown(GetFirstParentForm(Self));
end;
procedure TCustomSpeedButton.Click;
begin
inherited Click;
end;
{------------------------------------------------------------------------------
Method: TCustomSpeedButton.SetAllowAllUp
Params: Value:
Returns: nothing
------------------------------------------------------------------------------}
procedure TCustomSpeedButton.SetAllowAllUp(Value : Boolean);
begin
if FAllowAllUp <> Value
then begin
FAllowAllUp := Value;
UpdateExclusive;
end;
end;
{------------------------------------------------------------------------------
Method: TCustomSpeedButton.SetDown
Params: Value:
Returns: nothing
------------------------------------------------------------------------------}
procedure TCustomSpeedButton.SetDown(Value : Boolean);
var
OldState: TButtonState;
OldDown: Boolean;
begin
//since Down needs GroupIndex, then we need to wait that all properties
//loaded before we continue
if (csLoading in ComponentState) then
begin
FDownLoaded := Value;
exit;
end else
begin
if FGroupIndex = 0 then
Value:= false;
if FDown <> Value then
begin
if FDown and not FAllowAllUp then
Exit;
OldDown := FDown;
FDown := Value;
OldState := FState;
if FDown then
FState := bsExclusive
else
FState := UpState[FMouseInControl];
if (OldDown <> FDown) or (OldState <> FState) then
Invalidate;
if Value then
UpdateExclusive;
end;
end;
end;
{------------------------------------------------------------------------------
Method: TCustomSpeedButton.SetFlat
Params: Value:
Returns: nothing
------------------------------------------------------------------------------}
procedure TCustomSpeedButton.SetFlat(const Value : boolean);
begin
if FFlat <> Value then
begin
FFlat := Value;
Invalidate;
end;
end;
{------------------------------------------------------------------------------
Method: TCustomSpeedButton.SetGlyph
Params: Value:
Returns: nothing
------------------------------------------------------------------------------}
procedure TCustomSpeedButton.SetGlyph(Value : TBitmap);
begin
FGlyph.Glyph := Value;
Invalidate;
end;
{------------------------------------------------------------------------------
Method: TCustomSpeedButton.SetGroupIndex
Params: Value:
Returns: nothing
------------------------------------------------------------------------------}
procedure TCustomSpeedButton.SetGroupIndex(const Value : Integer);
begin
if FGroupIndex <> Value then begin
FGroupIndex := Value;
UpdateExclusive;
end;
end;
{------------------------------------------------------------------------------
Method: TCustomSpeedButton.SetMargin
Params: Value:
Returns: nothing
------------------------------------------------------------------------------}
procedure TCustomSpeedButton.SetMargin(const Value : Integer);
begin
if FMargin <> Value then begin
FMargin := Value;
Invalidate;
end;
end;
{------------------------------------------------------------------------------
Method: TCustomSpeedButton.SetNumGlyphs
Params: Value : Integer = Number of glyphs in the file/resource
Returns: nothing
------------------------------------------------------------------------------}
procedure TCustomSpeedButton.SetNumGlyphs(Value : integer);
Begin
if Value < 0 then Value := 1;
if Value > High(TNumGlyphs) then Value := High(TNumGlyphs);
if Value <> TButtonGlyph(fGlyph).NumGlyphs then
Begin
TButtonGlyph(fGlyph).NumGlyphs := TNumGlyphs(Value);
Invalidate;
end;
end;
{------------------------------------------------------------------------------
Method: TCustomSpeedButton.SetSpacing
Params: Value:
Returns: nothing
------------------------------------------------------------------------------}
procedure TCustomSpeedButton.SetSpacing(const Value : Integer);
begin
if FSpacing <> Value then begin
FSpacing := Value;
Invalidate;
end;
end;
procedure TCustomSpeedButton.SetShowAccelChar(Value : Boolean);
begin
If FShowAccelChar <> Value then begin
FShowAccelChar := Value;
Invalidate;
end;
end;
{------------------------------------------------------------------------------
procedure TCustomSpeedButton.RealSetText(const Value: TCaption);
------------------------------------------------------------------------------}
procedure TCustomSpeedButton.RealSetText(const Value: TCaption);
begin
if Caption = Value then Exit;
inherited RealSetText(Value);
Invalidate;
end;
{------------------------------------------------------------------------------
procedure TCustomSpeedButton.UpdateState(InvalidateOnChange: boolean);
------------------------------------------------------------------------------}
procedure TCustomSpeedButton.UpdateState(InvalidateOnChange: boolean);
var
OldState: TButtonState;
begin
OldState := FState;
if not Enabled then
begin
FState := bsDisabled;
FDragging := False;
end else
begin
if FState = bsDisabled then
begin
if FDown and (GroupIndex <> 0) then
FState := bsExclusive
else
FState := UpState[FMouseInControl];
end
else
if (FState in [bsHot, bsDown]) and (not FMouseInControl) and (not FDragging) and (not FDown) then
begin
// return to normal
FState := bsUp;
end
else
if (FState = bsUp) and FMouseInControl then
FState := bsHot;
end;
if FState <> OldState then
if (Action is TCustomAction) then
TCustomAction(Action).Checked := FState = bsDown;
//if InvalidateOnChange then DebugLn(['TCustomSpeedButton.UpdateState ',DbgSName(Self),' InvalidateOnChange=',InvalidateOnChange,' StateChange=',FState<>OldState]);
if InvalidateOnChange and
(
(FState <> OldState) or
not ThemedElementDetailsEqual(FLastDrawDetails, GetDrawDetails)
)
then
Invalidate;
end;
{------------------------------------------------------------------------------
function TCustomSpeedButton.GetDrawDetails: TThemedElementDetails;
------------------------------------------------------------------------------}
function TCustomSpeedButton.GetDrawDetails: TThemedElementDetails;
function ButtonPart: TThemedButton;
begin
// tbPushButtonNormal, tbPushButtonHot, tbPushButtonPressed,
// tbPushButtonDisabled, tbPushButtonDefaulted
// no check states available
Result := tbPushButtonNormal;
if not Enabled then
Result := tbPushButtonDisabled
else
if FState in [bsDown, bsExclusive] then
Result := tbPushButtonPressed
else
if FState = bsHot then
Result := tbPushButtonHot
else
Result := tbPushButtonNormal
end;
function ToolButtonPart: TThemedToolBar;
begin
// ttbButtonNormal, ttbButtonHot, ttbButtonPressed, ttbButtonDisabled
// ttbButtonChecked, ttbButtonCheckedHot
if not Enabled then
Result := ttbButtonDisabled
else
begin
if Down then
begin // checked states
if FMouseInControl then
Result := ttbButtonCheckedHot
else
Result := ttbButtonChecked
end
else
begin
if FState in [bsDown, bsExclusive] then
Result := ttbButtonPressed else
if FState = bsHot then
Result := ttbButtonHot
else
Result := ttbButtonNormal
end;
end;
end;
begin
if Flat then
Result := ThemeServices.GetElementDetails(ToolButtonPart)
else
Result := ThemeServices.GetElementDetails(ButtonPart)
end;
procedure TCustomSpeedButton.ActionChange(Sender: TObject;
CheckDefaults: Boolean);
begin
inherited ActionChange(Sender,CheckDefaults);
if Sender is TCustomAction then begin
with TCustomAction(Sender) do begin
if CheckDefaults or (Self.GroupIndex = 0) then
Self.GroupIndex := GroupIndex;
if (Glyph.Empty) and (ActionList <> nil) and (ActionList.Images <> nil)
and (ImageIndex >= 0) and (ImageIndex < ActionList.Images.Count) then
ActionList.Images.GetBitmap(ImageIndex, Glyph);
end;
end;
end;
function TCustomSpeedButton.GetActionLinkClass: TControlActionLinkClass;
begin
Result := TSpeedButtonActionLink;
end;
class function TCustomSpeedButton.GetControlClassDefaultSize: TSize;
begin
Result.CX := 23;
Result.CY := 22;
end;
{------------------------------------------------------------------------------
Method: TCustomSpeedButton.UpdateExclusive
Params: none
Returns: nothing
------------------------------------------------------------------------------}
procedure TCustomSpeedButton.UpdateExclusive;
var
msg : TLMessage;
begin
if (FGroupIndex <> 0) and (Parent <> nil)
and (not (csLoading in ComponentState))
then begin
Msg.Msg := CM_ButtonPressed;
Msg.WParam := FGroupIndex;
Msg.LParam := PtrInt(Self);
Msg.Result := 0;
Parent.Broadcast(Msg);
end;
end;
{------------------------------------------------------------------------------
Function: TCustomSpeedButton.GetGlyph
Params: none
Returns: The bitmap
------------------------------------------------------------------------------}
function TCustomSpeedButton.GetGlyph : TBitmap;
begin
Result := FGlyph.Glyph;
end;
procedure TCustomSpeedButton.SetShowCaption(const AValue: boolean);
begin
if FShowCaption=AValue then exit;
FShowCaption:=AValue;
invalidate;
end;
{------------------------------------------------------------------------------
Method: TCustomSpeedButton.GetNumGlyphs
Params: none
Returns: The number stored in TButtonGlyph(FGlyph).NumGlyphs
------------------------------------------------------------------------------}
function TCustomSpeedButton.GetNumGlyphs : Integer;
Begin
Result := TButtonGlyph(fGlyph).NumGlyphs;
end;
{------------------------------------------------------------------------------
Method: TCustomSpeedButton.GlyphChanged
Params: Sender - The glyph that changed
Returns: zippo
------------------------------------------------------------------------------}
procedure TCustomSpeedButton.GlyphChanged(Sender : TObject);
Begin
//redraw the button;
Invalidate;
end;
function TCustomSpeedButton.DialogChar(var Message: TLMKey): boolean;
begin
Result := False;
Assert(Message.Msg = LM_SYSCHAR, '*** Warning: non LM_SYSCHAR passed to TCustomSpeedButton.DialogChar ! ***');
if not FShowAccelChar then Exit;
if IsAccel(Message.CharCode, Caption) then
begin
Result := True;
if GroupIndex <> 0 then
SetDown(not FDown);
Click;
end else
Result := inherited DialogChar(Message);
end;
{------------------------------------------------------------------------------
Method: TCustomSpeedButton.Paint
Params: none
Returns: nothing
------------------------------------------------------------------------------}
procedure TCustomSpeedButton.Paint;
var
PaintRect: TRect;
GlyphWidth, GlyphHeight: Integer;
Offset, OffsetCap: TPoint;
ClientSize, TotalSize, TextSize, GlyphSize: TSize;
M, S : integer;
SIndex : Longint;
TMP : String;
TextFlags: Integer;
begin
UpdateState(false);
if FGlyph = nil then exit;
PaintRect:=ClientRect;
FLastDrawDetails := GetDrawDetails;
PaintBackground(PaintRect);
GlyphSize := GetGlyphSize(PaintRect);
GlyphWidth := GlyphSize.CX;
if TButtonGlyph(FGlyph).NumGlyphs > 1 then
GlyphWidth:=GlyphWidth div NumGlyphs;
GlyphHeight := GlyphSize.CY;
ClientSize.cx:= PaintRect.Right - PaintRect.Left;
ClientSize.cy:= PaintRect.Bottom - PaintRect.Top;
TextSize := GetTextSize(PaintRect);
if Caption <> '' then
begin
TMP := Caption;
SIndex := DeleteAmpersands(TMP);
If SIndex > 0 then
If SIndex <= Length(TMP) then begin
FShortcut := Ord(TMP[SIndex]);
end;
end;
if (GlyphWidth = 0) or (GlyphHeight = 0)
or (TextSize.cx = 0) or (TextSize.cy = 0)
then
S:= 0
else
S:= Spacing;
// Calculate caption and glyph layout
if Margin = -1 then begin
if S = -1 then begin
TotalSize.cx:= TextSize.cx + GlyphWidth;
TotalSize.cy:= TextSize.cy + GlyphHeight;
if Layout in [blGlyphLeft, blGlyphRight] then
M:= (ClientSize.cx - TotalSize.cx) div 3
else
M:= (ClientSize.cy - TotalSize.cy) div 3;
S:= M;
end else begin
TotalSize.cx:= GlyphWidth + S + TextSize.cx;
TotalSize.cy:= GlyphHeight + S + TextSize.cy;
if Layout in [blGlyphLeft, blGlyphRight] then
M:= (ClientSize.cx - TotalSize.cx) div 2
else
M:= (ClientSize.cy - TotalSize.cy) div 2;
end;
end else begin
if S = -1 then begin
TotalSize.cx:= ClientSize.cx - (Margin + GlyphWidth);
TotalSize.cy:= ClientSize.cy - (Margin + GlyphHeight);
if Layout in [blGlyphLeft, blGlyphRight] then
S:= (TotalSize.cx - TextSize.cx) div 2
else
S:= (TotalSize.cy - TextSize.cy) div 2;
end;
M:= Margin;
end;
case BidiAdjustButtonLayout(UseRightToLeftReading, Layout) of
blGlyphLeft : begin
Offset.X:= M;
Offset.Y:= (ClientSize.cy - GlyphHeight) div 2;
OffsetCap.X:= Offset.X + GlyphWidth + S;
OffsetCap.Y:= (ClientSize.cy - TextSize.cy) div 2;
end;
blGlyphRight : begin
Offset.X:= ClientSize.cx - M - GlyphWidth;
Offset.Y:= (ClientSize.cy - GlyphHeight) div 2;
OffsetCap.X:= Offset.X - S - TextSize.cx;
OffsetCap.Y:= (ClientSize.cy - TextSize.cy) div 2;
end;
blGlyphTop : begin
Offset.X:= (ClientSize.cx - GlyphWidth) div 2;
Offset.Y:= M;
OffsetCap.X:= (ClientSize.cx - TextSize.cx) div 2;
OffsetCap.Y:= Offset.Y + GlyphHeight + S;
end;
blGlyphBottom : begin
Offset.X:= (ClientSize.cx - GlyphWidth) div 2;
Offset.Y:= ClientSize.cy - M - GlyphHeight;
OffsetCap.X:= (ClientSize.cx - TextSize.cx) div 2;
OffsetCap.Y:= Offset.Y - S - TextSize.cy;
end;
end;
DrawGlyph(Canvas, PaintRect, Offset, FState, Transparent, 0);
if FShowCaption and (Caption <> '') then
begin
with PaintRect, OffsetCap do
begin
Left := Left + X;
Top := Top + Y;
end;
TextFlags := DT_LEFT or DT_TOP;
if UseRightToLeftReading then
TextFlags := TextFlags or DT_RTLREADING;
ThemeServices.DrawText(Canvas, FLastDrawDetails, Caption, PaintRect,
TextFlags, 0);
end;
inherited Paint;
end;
procedure TCustomSpeedButton.PaintBackground(var PaintRect: TRect);
begin
if not Transparent and ThemeServices.HasTransparentParts(FLastDrawDetails) then
begin
Canvas.Brush.Color := Color;
Canvas.FillRect(PaintRect);
end;
ThemeServices.DrawElement(Canvas.Handle, FLastDrawDetails, PaintRect);
PaintRect := ThemeServices.ContentRect(Canvas.Handle, FLastDrawDetails, PaintRect);
end;
{------------------------------------------------------------------------------
Method: TCustomSpeedButton.MouseDown
Params: Button:
Shift:
X, Y:
Returns: nothing
------------------------------------------------------------------------------}
procedure TCustomSpeedButton.MouseDown(Button: TMouseButton; Shift: TShiftState;
X, Y: Integer);
begin
inherited MouseDown(Button, Shift, X, Y);
if csDesigning in ComponentState then exit;
if (Button = mbLeft) and Enabled then
begin
if not FDown then
begin
FState := bsDown;
if (Action is TCustomAction) then
TCustomAction(Action).Checked := False;
Invalidate;
end;
FDragging := True;
end;
end;
{------------------------------------------------------------------------------
Method: TCustomSpeedButton.MouseMove
Params: Shift:
X, Y:
Returns: nothing
------------------------------------------------------------------------------}
procedure TCustomSpeedButton.MouseMove(Shift: TShiftState; X, Y: Integer);
var
NewState: TButtonState;
begin
inherited MouseMove(Shift, X, Y);
if csDesigning in ComponentState then exit;
if FDragging then
begin
Assert(False,'Trace:FDragging is true');
if FDown then
NewState := bsExclusive
else
begin
if (X >= 0) and (X < Width)
and (Y >= 0) and (Y < Height)
then
NewState := bsDown
else
NewState := UpState[FMouseInControl];
end;
if NewState <> FState then
begin
//debugln(['TCustomSpeedButton.MouseMove ',DbgSName(Self),' fState=',ord(fstate),' NewState=',ord(NewState)]);
FState := NewState;
Invalidate;
end;
end;
end;
{------------------------------------------------------------------------------
Method: TCustomSpeedButton.MouseUp
Params: Button:
Shift:
X, Y:
Returns: nothing
------------------------------------------------------------------------------}
procedure TCustomSpeedButton.MouseUp(Button: TMouseButton; Shift: TShiftState;
X, Y: Integer);
begin
inherited MouseUp(Button, Shift, X, Y);
end;
{------------------------------------------------------------------------------
procedure TCustomSpeedButton.DoBeforeMouseMessage;
------------------------------------------------------------------------------}
procedure TCustomSpeedButton.DoBeforeMouseMessage;
begin
if Application<>nil then
Application.DoBeforeMouseMessage(Self);
end;
{------------------------------------------------------------------------------
TCustomSpeedButton DoMouseUp "Event Handler"
------------------------------------------------------------------------------}
procedure TCustomSpeedButton.DoMouseUp(var Message: TLMMouse; Button: TMouseButton);
begin
if not (csNoStdEvents in ControlStyle)
then with Message do
MouseUp(Button, KeysToShiftState(Keys), XPos, YPos);
end;
procedure TCustomSpeedButton.WMLButtonDown(var Message: TLMLButtonDown);
begin
inherited;
// because csClickEvents is not set no csClicked is set in the inherited method
Include(FControlState, csClicked);
end;
procedure TCustomSpeedButton.WMLButtonDBLCLK(var Message: TLMLButtonDblClk);
begin
inherited;
// if in a group, raise dblclick event, otherwise translate to click event
if Down
then DblClick
else Click;
end;
class procedure TCustomSpeedButton.WSRegisterClass;
begin
inherited WSRegisterClass;
RegisterCustomSpeedButton;
end;
{------------------------------------------------------------------------------
Method: TCustomSpeedButton.WMLButtonUp
Params: Message
Returns: Nothing
Mouse event handler
------------------------------------------------------------------------------}
procedure TCustomSpeedButton.WMLButtonUp(var Message: TLMLButtonUp);
var
OldState: TButtonState;
begin
DoBeforeMouseMessage;
//DebugLn('TCustomSpeedButton.WMLButtonUp A ',DbgSName(Self),' csCaptureMouse=',DbgS(csCaptureMouse in ControlStyle),' csClicked=',DbgS(csClicked in ControlState));
if (csCaptureMouse in ControlStyle) and (mbLeft in CaptureMouseButtons) then
begin
{$IFDEF VerboseMouseCapture}
DebugLn('TCustomSpeedButton.WMLButtonUp ',Name,':',ClassName);
{$ENDIF}
MouseCapture := False;
end;
if not (csDesigning in ComponentState) and FDragging then
begin
OldState := FState;
FDragging := False;
if FGroupIndex = 0 then
begin
FState := UpState[FMouseInControl];
if OldState <> FState then
Invalidate;
end
else if (Message.XPos >= 0) and (Message.XPos < Width)
and (Message.YPos >= 0) and (Message.YPos < Height) then
SetDown(not FDown);
end;
DoMouseUp(Message, mbLeft);
if csClicked in ControlState then
begin
Exclude(FControlState, csClicked);
//DebugLn('TCustomSpeedButton.WMLButtonUp B ',dbgs(ClientRect.Left),',',dbgs(ClientRect.Top),',',dbgs(ClientRect.Right),',',dbgs(ClientRect.Bottom),' ',dbgs(Message.Pos.X),',',dbgs(Message.Pos.Y));
if PtInRect(ClientRect, SmallPointToPoint(Message.Pos))
then begin
//DebugLn('TCustomSpeedButton.WMLButtonUp C');
// Important: Calling Click can invoke modal dialogs, so call this as last
Click;
end;
end;
//DebugLn('TCustomSpeedButton.WMLButtonUp END');
end;
{------------------------------------------------------------------------------
Method: TCustomSpeedButton.SetLayout
Params: Value: new layout value
Returns: nothing
------------------------------------------------------------------------------}
procedure TCustomSpeedButton.SetLayout(const Value : TButtonLayout);
begin
if Value <> FLayout then begin
FLayout:= Value;
Invalidate;
end;
end;
{------------------------------------------------------------------------------
Method: TCustomSpeedButton.SetTransparent
Params: Value: new transparency value
Returns: nothing
------------------------------------------------------------------------------}
procedure TCustomSpeedButton.SetTransparent(const AValue: boolean);
const
MODE: array[Boolean] of TGlyphTransparencyMode = (gtmOpaque, gtmTransparent);
begin
if AValue = Transparent then Exit;
if AValue then
ControlStyle := ControlStyle - [csOpaque]
else
ControlStyle := ControlStyle + [csOpaque];
FGlyph.SetTransparentMode(MODE[AValue]);
Invalidate;
end;
{------------------------------------------------------------------------------
Method: TCustomSpeedButton.CMButtonPressed
Params: Message:
Returns: nothing
------------------------------------------------------------------------------}
procedure TCustomSpeedButton.CMButtonPressed(var Message : TLMessage);
var
Sender : TCustomSpeedButton;
begin
if csDestroying in ComponentState then exit;
if Message.WParam = WParam(FGroupIndex)
then begin
Sender := TCustomSpeedButton(Message.LParam);
if Sender <> Self
then begin
if Sender.Down and FDown
then begin
FDown := False;
FState := UpState[FMouseInControl];
Invalidate;
end;
FAllowAllUp := Sender.AllowAllUp;
end;
end;
end;
procedure TCustomSpeedButton.Loaded;
begin
inherited Loaded;
UpdateExclusive;
if FDownLoaded then
SetDown(FDownLoaded);
end;
procedure TCustomSpeedButton.LoadGlyphFromLazarusResource(const AName: String);
begin
Buttons.LoadGlyphFromLazarusResource(FGlyph, AName);
end;
function TCustomSpeedButton.GetGlyphSize(PaintRect: TRect): TSize;
begin
Result.CX := FGlyph.Glyph.Width;
Result.CY := FGlyph.Glyph.Height;
end;
function TCustomSpeedButton.GetTextSize(PaintRect: TRect): TSize;
var
TMP: String;
TXTStyle: TTextStyle;
Flags: Cardinal;
begin
if FShowCaption and (Caption <> '') then
begin
TMP := Caption;
TXTStyle := Canvas.TextStyle;
TXTStyle.Opaque := False;
TXTStyle.Clipping := True;
TXTStyle.ShowPrefix := ShowAccelChar;
TXTStyle.Alignment := taLeftJustify;
TXTStyle.Layout := tlTop;
TXTStyle.RightToLeft := UseRightToLeftReading;
TXTStyle.SystemFont := Canvas.Font.IsDefault;//Match System Default Style
DeleteAmpersands(TMP);
Flags := DT_CalcRect;
if not TXTStyle.SingleLine then Inc(Flags, DT_WordBreak);
DrawText(Canvas.Handle, PChar(TMP), Length(TMP), PaintRect, Flags);
Result.CY := PaintRect.Bottom - PaintRect.Top;
Result.CX := PaintRect.Right - PaintRect.Left;
end
else
begin
Result.CY:= 0;
Result.CX:= 0;
end;
end;
function TCustomSpeedButton.GetTransparent: Boolean;
begin
if FGlyph.TransparentMode = gtmGlyph
then Result := FGlyph.FOriginal.Transparent
else Result := FGlyph.TransparentMode = gtmTransparent;
end;
function TCustomSpeedButton.DrawGlyph(ACanvas: TCanvas; const AClient: TRect;
const AOffset: TPoint; AState: TButtonState; ATransparent: Boolean;
BiDiFlags: Longint): TRect;
begin
if Assigned(FGlyph) then
begin
if (AState = bsDown) or (Down = true) then
Result := FGlyph.Draw(ACanvas, AClient, point(AOffset.x + 1, AOffset.y + 1), AState, ATransparent, BiDiFlags)
else
Result := FGlyph.Draw(ACanvas, AClient, AOffset, AState, ATransparent, BiDiFlags);
end;
end;
{------------------------------------------------------------------------------
Method: TCustomSpeedButton.CMEnabledChanged
Params: Message:
Returns: nothing
------------------------------------------------------------------------------}
procedure TCustomSpeedButton.CMEnabledChanged(var Message: TLMEssage);
Begin
//Should create a new glyph based on the new state
UpdateState(true);
end;
{------------------------------------------------------------------------------
Method: TCustomSpeedButton.MouseEnter
Params:
Returns: nothing
------------------------------------------------------------------------------}
procedure TCustomSpeedButton.MouseEnter;
begin
if csDesigning in ComponentState then exit;
if not FMouseInControl and Enabled and (GetCapture = 0) then
begin
FMouseInControl := True;
UpdateState(true);
inherited MouseEnter;
end;
end;
{------------------------------------------------------------------------------
Method: TCustomSpeedButton.MouseLeave
Params:
Returns: nothing
------------------------------------------------------------------------------}
procedure TCustomSpeedButton.MouseLeave;
begin
if csDesigning in ComponentState then exit;
///DebugLn(['TCustomSpeedButton.MouseLeave ',DbgSName(Self),' FMouseInControl=',FMouseInControl,' FDragging=',FDragging]);
if FMouseInControl then
begin
FMouseInControl := False;
if Enabled then
begin
if FDragging and (not MouseCapture) then
begin
// something fetched our mouse capture
FDragging:=false;
end;
UpdateState(true);
inherited MouseLeave;
end;
end;
end;
{ TSpeedButtonActionLink }
procedure TSpeedButtonActionLink.AssignClient(AClient: TObject);
begin
inherited AssignClient(AClient);
FClient := AClient as TCustomSpeedButton;
end;
function TSpeedButtonActionLink.IsCheckedLinked: Boolean;
var
SpeedButton: TCustomSpeedButton;
begin
SpeedButton:=TCustomSpeedButton(FClient);
Result := inherited IsCheckedLinked
and (SpeedButton.GroupIndex <> 0)
and SpeedButton.AllowAllUp
and (SpeedButton.Down = (Action as TCustomAction).Checked);
end;
function TSpeedButtonActionLink.IsGroupIndexLinked: Boolean;
var
SpeedButton: TCustomSpeedButton;
begin
SpeedButton:=TCustomSpeedButton(FClient);
Result := (SpeedButton is TCustomSpeedButton) and
(SpeedButton.GroupIndex = (Action as TCustomAction).GroupIndex);
end;
procedure TSpeedButtonActionLink.SetGroupIndex(Value: Integer);
begin
if IsGroupIndexLinked then TCustomSpeedButton(FClient).GroupIndex := Value;
end;
procedure TSpeedButtonActionLink.SetChecked(Value: Boolean);
begin
if IsCheckedLinked then TCustomSpeedButton(FClient).Down := Value;
end;
{$IFDEF ASSERT_IS_ON}
{$UNDEF ASSERT_IS_ON}
{$C-}
{$ENDIF} |
Partager