add support for changing the color mode

sibbl · Nov 10, 2021 · b45c198 · b45c198
1 parent 24eb068
commit b45c198
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Showing 3 changed files with 3 additions and 1 deletion.
diff --git a/README.md b/README.md
@@ -38,6 +38,7 @@ Home Assistant related stuff:
 | `ROTATION`                | `0`                                   | no       | yes      | Rotation of image in degrees, e.g. use 90 or 270 to render in landscape                                                                                 |
 | `SCALING`                 | `1`                                   | no       | yes      | Scaling factor, e.g. `1.5` to zoom in or `0.75` to zoom out                                                                                             |
 | `GRAYSCALE_DEPTH`         | `8`                                   | no       | yes      | Ggrayscale bit depth your kindle supports                                                                                                               |
+| `COLOR_MODE`         | `GrayScale`                                   | no       | yes      | ColorMode to use, ex: `GrayScale`, or `TrueColor`.                                                                                                           |
 
 **\* Array** means that you can set `HA_SCREENSHOT_URL_2`, `HA_SCREENSHOT_URL_3`, ... `HA_SCREENSHOT_URL_n` to render multiple pages within the same instance.
 If you use `HA_SCREENSHOT_URL_2`, you can also set `ROTATION_2=180`. If there is no `ROTATION_n` set, then `ROTATION` will be used as a fallback.

diff --git a/config.js b/config.js
@@ -25,6 +25,7 @@ function getPagesConfig() {
         width: getEnvironmentVariable("RENDERING_SCREEN_WIDTH", suffix) || 600,
       },
       grayscaleDepth: getEnvironmentVariable("GRAYSCALE_DEPTH", suffix) || 8,
+      colorMode: getEnvironmentVariable("COLOR_MODE", suffix) || "GrayScale",
       rotation: getEnvironmentVariable("ROTATION", suffix) || 0,
       scaling: getEnvironmentVariable("SCALING", suffix) || 1,
     });

diff --git a/index.js b/index.js
@@ -212,7 +212,7 @@ function convertImageToKindleCompatiblePngAsync(
         imageMagick: config.useImageMagick === true,
       })
       .rotate("white", pageConfig.rotation)
-      .type("GrayScale")
+      .type(pageConfig.colorMode)
       .bitdepth(pageConfig.grayscaleDepth)
       .write(outputPath, (err) => {
         if (err) {