feat(packages/excalidraw): export applyDarkModeFilter and simplify (#11429)

packages/common/src/colors.ts

@@ -80,7 +80,11 @@ const cssInvert = (
   return { r: invertedR, g: invertedG, b: invertedB };
 };
 
-export const applyDarkModeFilter = (color: string): string => {
+export const applyDarkModeFilter = (color: string, enable = true): string => {
+  if (!enable) {
+    return color;
+  }
+
   const cached = DARK_MODE_COLORS_CACHE?.get(color);
   if (cached) {
     return cached;

packages/element/src/renderElement.ts

@@ -422,10 +422,10 @@ const drawElementOnCanvas = (
 
       for (const shape of shapes) {
         if (typeof shape === "string") {
-          context.fillStyle =
+          context.fillStyle = applyDarkModeFilter(
-            renderConfig.theme === THEME.DARK
+            element.strokeColor,
-              ? applyDarkModeFilter(element.strokeColor)
+            renderConfig.theme === THEME.DARK,
-              : element.strokeColor;
+          );
           context.fill(new Path2D(shape));
         } else {
           rc.draw(shape);
@@ -555,10 +555,10 @@ const drawElementOnCanvas = (
         context.canvas.setAttribute("dir", rtl ? "rtl" : "ltr");
         context.save();
         context.font = getFontString(element);
-        context.fillStyle =
+        context.fillStyle = applyDarkModeFilter(
-          renderConfig.theme === THEME.DARK
+          element.strokeColor,
-            ? applyDarkModeFilter(element.strokeColor)
+          renderConfig.theme === THEME.DARK,
-            : element.strokeColor;
+        );
         context.textAlign = element.textAlign as CanvasTextAlign;
 
         // Canvas does not support multiline text by default
@@ -811,10 +811,10 @@ export const renderElement = (
         context.fillStyle = "rgba(0, 0, 200, 0.04)";
 
         context.lineWidth = FRAME_STYLE.strokeWidth / appState.zoom.value;
-        context.strokeStyle =
+        context.strokeStyle = applyDarkModeFilter(
-          appState.theme === THEME.DARK
+          FRAME_STYLE.strokeColor,
-            ? applyDarkModeFilter(FRAME_STYLE.strokeColor)
+          appState.theme === THEME.DARK,
-            : FRAME_STYLE.strokeColor;
+        );
 
         // TODO change later to only affect AI frames
         if (isMagicFrameElement(element)) {

packages/element/src/shape.ts

@@ -218,9 +218,7 @@ export const generateRoughOptions = (
     fillWeight: element.strokeWidth / 2,
     hachureGap: element.strokeWidth * 4,
     roughness: adjustRoughness(element),
-    stroke: isDarkMode
+    stroke: applyDarkModeFilter(element.strokeColor, isDarkMode),
-      ? applyDarkModeFilter(element.strokeColor)
-      : element.strokeColor,
     preserveVertices:
       continuousPath || element.roughness < ROUGHNESS.cartoonist,
   };
@@ -234,9 +232,7 @@ export const generateRoughOptions = (
       options.fillStyle = element.fillStyle;
       options.fill = isTransparent(element.backgroundColor)
         ? undefined
-        : isDarkMode
+        : applyDarkModeFilter(element.backgroundColor, isDarkMode);
-        ? applyDarkModeFilter(element.backgroundColor)
-        : element.backgroundColor;
       if (element.type === "ellipse") {
         options.curveFitting = 1;
       }
@@ -249,9 +245,7 @@ export const generateRoughOptions = (
         options.fill =
           element.backgroundColor === "transparent"
             ? undefined
-            : isDarkMode
+            : applyDarkModeFilter(element.backgroundColor, isDarkMode);
-            ? applyDarkModeFilter(element.backgroundColor)
-            : element.backgroundColor;
       }
       return options;
     }
@@ -386,12 +380,11 @@ const getArrowheadShapes = (
     return [];
   }
 
-  const strokeColor = isDarkMode
+  const strokeColor = applyDarkModeFilter(element.strokeColor, isDarkMode);
-    ? applyDarkModeFilter(element.strokeColor)
+  const backgroundFillColor = applyDarkModeFilter(
-    : element.strokeColor;
+    canvasBackgroundColor,
-  const backgroundFillColor = isDarkMode
+    isDarkMode,
-    ? applyDarkModeFilter(canvasBackgroundColor)
+  );
-    : canvasBackgroundColor;
   const cardinalityOneOrManyOffset = -0.25;
   const cardinalityZeroCircleScale = 0.8;
 

packages/excalidraw/components/App.tsx

@@ -1995,9 +1995,10 @@ class App extends React.Component<AppProps, AppState> {
               }
             }}
             style={{
-              background: isDarkTheme
+              background: applyDarkModeFilter(
-                ? applyDarkModeFilter(this.state.viewBackgroundColor)
+                this.state.viewBackgroundColor,
-                : this.state.viewBackgroundColor,
+                isDarkTheme,
+              ),
               zIndex: 2,
               border: "none",
               display: "block",

packages/excalidraw/index.tsx

@@ -7,6 +7,7 @@ import React, {
 } from "react";
 
 import {
+  applyDarkModeFilter,
   DEFAULT_IMAGE_OPTIONS,
   DEFAULT_UI_OPTIONS,
   isShallowEqual,
@@ -450,3 +451,5 @@ export function useExcalidrawStateValue(
 // -----------------------------------------------------------------------------
 
 export { _useOnAppStateChange as useOnExcalidrawStateChange };
+
+export { applyDarkModeFilter };

packages/excalidraw/renderer/helpers.ts

@@ -62,10 +62,10 @@ export const bootstrapCanvas = ({
       context.clearRect(0, 0, normalizedWidth, normalizedHeight);
     }
     context.save();
-    context.fillStyle =
+    context.fillStyle = applyDarkModeFilter(
-      theme === THEME.DARK
+      viewBackgroundColor,
-        ? applyDarkModeFilter(viewBackgroundColor)
+      theme === THEME.DARK,
-        : viewBackgroundColor;
+    );
     context.fillRect(0, 0, normalizedWidth, normalizedHeight);
     context.restore();
   } else {

packages/excalidraw/renderer/staticSvgScene.ts

@@ -386,9 +386,10 @@ const renderElementToSvg = (
           const path = svgRoot.ownerDocument.createElementNS(SVG_NS, "path");
           path.setAttribute(
             "fill",
-            renderConfig.theme === THEME.DARK
+            applyDarkModeFilter(
-              ? applyDarkModeFilter(element.strokeColor)
+              element.strokeColor,
-              : element.strokeColor,
+              renderConfig.theme === THEME.DARK,
+            ),
           );
           path.setAttribute("d", shape);
           wrapper.appendChild(path);
@@ -621,9 +622,10 @@ const renderElementToSvg = (
         rect.setAttribute("fill", "none");
         rect.setAttribute(
           "stroke",
-          renderConfig.theme === THEME.DARK
+          applyDarkModeFilter(
-            ? applyDarkModeFilter(FRAME_STYLE.strokeColor)
+            FRAME_STYLE.strokeColor,
-            : FRAME_STYLE.strokeColor,
+            renderConfig.theme === THEME.DARK,
+          ),
         );
         rect.setAttribute("stroke-width", FRAME_STYLE.strokeWidth.toString());
 
@@ -677,9 +679,10 @@ const renderElementToSvg = (
           text.setAttribute("font-size", `${element.fontSize}px`);
           text.setAttribute(
             "fill",
-            renderConfig.theme === THEME.DARK
+            applyDarkModeFilter(
-              ? applyDarkModeFilter(element.strokeColor)
+              element.strokeColor,
-              : element.strokeColor,
+              renderConfig.theme === THEME.DARK,
+            ),
           );
           text.setAttribute("text-anchor", textAnchor);
           text.setAttribute("style", "white-space: pre;");

packages/excalidraw/scene/export.ts

@@ -459,9 +459,7 @@ export const exportToSvg = async (
     rect.setAttribute("height", `${height}`);
     rect.setAttribute(
       "fill",
-      exportWithDarkMode
+      applyDarkModeFilter(viewBackgroundColor, exportWithDarkMode),
-        ? applyDarkModeFilter(viewBackgroundColor)
-        : viewBackgroundColor,
     );
     svgRoot.appendChild(rect);
   }

packages/excalidraw/wysiwyg/textWysiwyg.tsx

@@ -392,10 +392,10 @@ export const textWysiwyg = ({
         ),
         textAlign,
         verticalAlign,
-        color:
+        color: applyDarkModeFilter(
-          appState.theme === THEME.DARK
+          updatedTextElement.strokeColor,
-            ? applyDarkModeFilter(updatedTextElement.strokeColor)
+          appState.theme === THEME.DARK,
-            : updatedTextElement.strokeColor,
+        ),
         opacity: updatedTextElement.opacity / 100,
         maxHeight: `${editorMaxHeight}px`,
       });