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[DataGrid] Fix background colors when CSSVarsProvider is used #12901

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[DataGrid] Fix background colors when CSSVarsProvider is used #12901

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19 changes: 10 additions & 9 deletions packages/x-data-grid/src/components/containers/GridRootStyles.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -153,15 +153,11 @@ export const GridRootStyles = styled('div', {
t.palette.action.selectedOpacity + t.palette.action.hoverOpacity,
);

const pinnedHoverBackground = t.vars
? hoverColor
: blend(pinnedBackground, hoverColor, hoverOpacity);
const pinnedSelectedBackground = t.vars
? selectedBackground
: blend(pinnedBackground, selectedBackground, selectedOpacity);
const pinnedSelectedHoverBackground = t.vars
? hoverColor
: blend(pinnedSelectedBackground, hoverColor, hoverOpacity);
const blendFn = t.vars ? blendCssVars : blend;

const pinnedHoverBackground = blendFn(pinnedBackground, hoverColor, hoverOpacity);
const pinnedSelectedBackground = blendFn(pinnedBackground, selectedBackground, selectedOpacity);
const pinnedSelectedHoverBackground = blendFn(pinnedSelectedBackground, hoverColor, hoverOpacity);

const selectedStyles = {
backgroundColor: selectedBackground,
Expand Down Expand Up @@ -678,3 +674,8 @@ function blend(background: string, overlay: string, opacity: number, gamma: numb
values: rgb as any,
});
}

const removeOpacity = (color: string) => `rgb(from ${color} r g b / 1)`;
function blendCssVars(background: string, overlay: string, opacity: number) {
return `color-mix(in srgb,${background}, ${removeOpacity(overlay)} calc(${opacity} * 100%))`;
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Wasn't sure if we could use color-mix. What are our supported browser versions?

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I wanted to validate this approach.
color-mix requires iOS >= 16.2, while we currently support >= 15.4. Same for Safari on MacOS. Other browsers seem to match what we have in our browserslist.

Do you have other ideas for solving this issue?

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No, this is the only thing that could work with CSS variables.

}