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FIX: Bug [0001348] No horizontal scroll via mouse horizontal wheel in the text viewer

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This commit is contained in:
Alexander Koblov 2020-01-17 21:46:37 +00:00
commit d1fda7cefa
1 changed files with 19 additions and 2 deletions
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21
components/viewer/viewercontrol.pas
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@ -436,6 +436,8 @@ type
procedure MouseUp(Button: TMouseButton; Shift: TShiftState; X, Y: Integer); override;
function DoMouseWheelDown(Shift: TShiftState; MousePos: TPoint): Boolean; override;
function DoMouseWheelUp(Shift: TShiftState; MousePos: TPoint): Boolean; override;
function DoMouseWheelLeft(Shift: TShiftState; MousePos: TPoint): Boolean; override;
function DoMouseWheelRight(Shift: TShiftState; MousePos: TPoint): Boolean; override;
{$if lcl_fullversion >= 1070000}
procedure DoAutoAdjustLayout(const AMode: TLayoutAdjustmentPolicy; const AXProportion, AYProportion: Double); override;
{$endif}
@ -796,7 +798,7 @@ var
aPosition: PtrInt;
begin
if not IsFileOpen then
Exit;
Exit(False);
aPosition := FPosition;
Result := ScrollPosition(aPosition, iLines);
if aPosition <> FPosition then
@ -808,7 +810,7 @@ var
newPos: Integer;
begin
if not IsFileOpen then
Exit;
Exit(False);
newPos := FHPosition + iSymbols;
if newPos < 0 then
newPos := 0
@ -816,6 +818,7 @@ begin
newPos := FHLowEnd - FTextWidth;
if newPos <> FHPosition then
SetHPosition(newPos);
Result:= True;
end;
function TViewerControl.GetText(const StartPos, Len: PtrInt; const Xoffset: Integer): string;
@ -2571,6 +2574,20 @@ begin
Result := Scroll(-Mouse.WheelScrollLines);
end;
function TViewerControl.DoMouseWheelLeft(Shift: TShiftState; MousePos: TPoint): Boolean;
begin
Result:= inherited DoMouseWheelLeft(Shift, MousePos);
if not Result then
Result := HScroll(-Mouse.WheelScrollLines);
end;
function TViewerControl.DoMouseWheelRight(Shift: TShiftState; MousePos: TPoint): Boolean;
begin
Result:= inherited DoMouseWheelRight(Shift, MousePos);
if not Result then
Result := HScroll(Mouse.WheelScrollLines);
end;
{$if lcl_fullversion >= 1070000}
procedure TViewerControl.DoAutoAdjustLayout(const AMode: TLayoutAdjustmentPolicy; const AXProportion, AYProportion: Double);
begin