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Thumbnail View font zoom and scroll

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add: font zoom with Ctrl+MouseWheelUp/Down
upd: panel scrolling uses 'Mouse \ Scrolling' options
This commit is contained in:
iglezz 2023-04-01 19:34:34 +03:00
commit 514fb71cde
1 changed files with 59 additions and 1 deletions
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60
src/fileviews/uthumbfileview.pas
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@ -55,6 +55,8 @@ type
protected
procedure KeyDown(var Key : Word; Shift : TShiftState); override;
procedure MouseMove(Shift: TShiftState; X, Y: Integer); override;
function DoMouseWheelUp(Shift: TShiftState; MousePos: TPoint): Boolean; override;
function DoMouseWheelDown(Shift: TShiftState; MousePos: TPoint): Boolean; override;
procedure MouseDown(Button: TMouseButton; Shift: TShiftState; X, Y: Integer); override;
procedure DragOver(Source: TObject; X,Y: Integer; State: TDragState; var Accept: Boolean); override;
protected
@ -99,7 +101,7 @@ implementation
uses
LCLIntf, LCLType, LMessages, Graphics, Math, StdCtrls, uFileSourceProperty,
uGlobs, uPixMapManager;
uGlobs, uPixMapManager, fMain;
{ TFileThumbnailsRetriever }
@ -249,6 +251,62 @@ begin
if FThumbView.IsMouseSelecting then DoMouseMoveScroll(nil, X, Y);
end;
function TThumbDrawGrid.DoMouseWheelUp(Shift: TShiftState; MousePos: TPoint): Boolean;
var
I: Integer;
begin
if not FThumbView.IsLoadingFileList then
begin
if (Shift=[ssCtrl])and(gFonts[dcfMain].Size < gFonts[dcfMain].MaxValue) then
begin
gFonts[dcfMain].Size:=gFonts[dcfMain].Size+1;
frmMain.FrameLeft.UpdateView;
frmMain.FrameRight.UpdateView;
Result:=True;
Exit;
end;
case gScrollMode of
smLineByLine:
for I:= 1 to gWheelScrollLines do
Perform(LM_VSCROLL, SB_LINEUP, 0);
smPageByPage:
Perform(LM_VSCROLL, SB_PAGEUP, 0);
end;
end
else
Result := True; // Handled
end;
function TThumbDrawGrid.DoMouseWheelDown(Shift: TShiftState; MousePos: TPoint): Boolean;
var
I: Integer;
begin
if not FThumbView.IsLoadingFileList then
begin
if (Shift=[ssCtrl])and(gFonts[dcfMain].Size > gFonts[dcfMain].MinValue) then
begin
gFonts[dcfMain].Size:=gFonts[dcfMain].Size-1;
frmMain.FrameLeft.UpdateView;
frmMain.FrameRight.UpdateView;
Result:=True;
Exit;
end;
case gScrollMode of
smLineByLine:
for I:= 1 to gWheelScrollLines do
Perform(LM_VSCROLL, SB_LINEDOWN, 0);
smPageByPage:
Perform(LM_VSCROLL, SB_PAGEDOWN, 0);
end;
end
else
Result := True; // Handled
end;
procedure TThumbDrawGrid.MouseDown(Button: TMouseButton; Shift: TShiftState; X, Y: Integer);
begin
FMouseDownY := Y;