RVRuler and VCL styles

[Martian]

Hi there,
Looks like RVRules doesn't support VCL styles.
What is the best way to assign correct style colors to it?

[Sergey Tkachenko]

The ruler support VCL style colors. I do not think that more complete VCL style support is possible.

ruler-skin.png (53.55 KiB) Viewed 28290 times

[Martian]

Glossy.png (9.06 KiB) Viewed 28262 times

Emerald.png (6.34 KiB) Viewed 28262 times

Coral.png (7.35 KiB) Viewed 28262 times

CobaltXEMedia.png (9.21 KiB) Viewed 28262 times

carbon.png (8.04 KiB) Viewed 28262 times

[Martian]

Windows10Dark.png (6.02 KiB) Viewed 28262 times

TabletDark.png (6.66 KiB) Viewed 28262 times

Radiant.png (6.78 KiB) Viewed 28262 times

OnyxBlue.png (13.73 KiB) Viewed 28262 times

Jet.png (7.9 KiB) Viewed 28262 times

[Sergey Tkachenko]

1) Which version of TRichView do you use?
2) What's the value of Ruler.RulerColor property?

[Martian]

1) 18.3
2) clWindow

[Sergey Tkachenko]

VCL skins are completely supported if Ruler.SkinType = stNoSkin.
Your ruler has SkinType <> stNoSkin.

There is a way to improve skin supports in this mode.
In RVRulerBase.pas, change the procedure UpdateRulerColors:

Code: Select all

procedure TCustomRuler.UpdateRulerColors;
Begin
  If FSkinType = stNoSkin then
    Exit;
  Move(DefRulerColors, FRulerColors, 40);
  If ColorToRGB(GetSysColor(RulerColor)) <> clWhite then
    ColorizeColorsAlter(FRulerColors, GetSysColor(RulerColor))
  Else If FSkinType = stSkin2 then
    ColorizeColorsAlter(FRulerColors, $00C0C0C0);
  SaturationColors(FRulerColors, FRulSaturation);
end;

Make this procedure public in TCustomRuler. Call it when the application starts and after each change of VCL theme.
But look at this code. In skin modes, the ruler has a predefined set of gray colors that can be shaded using RulerColor, and only in stSkin1 mode.

After the change I suggested, the ruler look betters in dark themes. But still not very good in inverted (light on dark) color themes.
If this shading is OK for you, you can improve the result by assigning inverted font color for inverted themes:

Code: Select all

uses Themes, RVFuncs;

procedure TForm3.btnSkinClick(Sender: TObject);
begin
  RVA_ChooseStyle;
  RVRuler1.UpdateRulerColors;
  if RV_GetLuminance(StyleServices.GetSystemColor(clWindowText)) >
    RV_GetLuminance(StyleServices.GetSystemColor(clWindow)) then
    RVRuler1.Font.Color := not StyleServices.GetSystemColor(clWindowText) and $FFFFFF
  else
    RVRuler1.Font.Color := clWindowText;
end;

But the best solution is to assign RVRuler.SkinType = stNoSkin in these themes.