Add feature testing device, and call it from mudraw with -T flag.

Currently only tests for the presence of non-grayscale color.

1 files changed, 85 insertions, 0 deletions

diff --git a/source/fitz/test-device.c b/source/fitz/test-device.c
new file mode 100644
index 00000000..e128e053
--- /dev/null
+++ b/source/fitz/test-device.c
@@ -0,0 +1,85 @@
+#include <mupdf/fitz.h>
+
+static void
+fz_test_colorspace(fz_context *ctx, fz_colorspace *colorspace, int *iscolor)
+{
+	if (colorspace && colorspace != fz_device_gray(ctx))
+		*iscolor = 1;
+}
+
+static void
+fz_test_color(fz_context *ctx, fz_colorspace *colorspace, float *color, int *iscolor)
+{
+	if (colorspace && colorspace != fz_device_gray(ctx))
+	{
+		float rgb[3];
+		fz_convert_color(ctx, fz_device_rgb(ctx), rgb, colorspace, color);
+		if (rgb[0] != rgb[1] || rgb[0] != rgb[2])
+			*iscolor = 1;
+	}
+}
+
+static void
+fz_test_fill_path(fz_device *dev, fz_path *path, int even_odd, const fz_matrix *ctm,
+	fz_colorspace *colorspace, float *color, float alpha)
+{
+	fz_test_color(dev->ctx, colorspace, color, dev->user);
+}
+
+static void
+fz_test_stroke_path(fz_device *dev, fz_path *path, fz_stroke_state *stroke,
+	const fz_matrix *ctm, fz_colorspace *colorspace, float *color, float alpha)
+{
+	fz_test_color(dev->ctx, colorspace, color, dev->user);
+}
+
+static void
+fz_test_fill_text(fz_device *dev, fz_text *text, const fz_matrix *ctm,
+	fz_colorspace *colorspace, float *color, float alpha)
+{
+	fz_test_color(dev->ctx, colorspace, color, dev->user);
+}
+
+static void
+fz_test_stroke_text(fz_device *dev, fz_text *text, fz_stroke_state *stroke,
+	const fz_matrix *ctm, fz_colorspace *colorspace, float *color, float alpha)
+{
+	fz_test_color(dev->ctx, colorspace, color, dev->user);
+}
+
+static void
+fz_test_fill_shade(fz_device *dev, fz_shade *shade, const fz_matrix *ctm, float alpha)
+{
+	fz_test_colorspace(dev->ctx, shade->colorspace, dev->user);
+}
+
+static void
+fz_test_fill_image(fz_device *dev, fz_image *image, const fz_matrix *ctm, float alpha)
+{
+	fz_test_colorspace(dev->ctx, image->colorspace, dev->user);
+}
+
+static void
+fz_test_fill_image_mask(fz_device *dev, fz_image *image, const fz_matrix *ctm,
+	fz_colorspace *colorspace, float *color, float alpha)
+{
+	fz_test_color(dev->ctx, colorspace, color, dev->user);
+}
+
+fz_device *
+fz_new_test_device(fz_context *ctx, int *iscolor)
+{
+	fz_device *dev = fz_new_device(ctx, iscolor);
+
+	dev->fill_path = fz_test_fill_path;
+	dev->stroke_path = fz_test_stroke_path;
+	dev->fill_text = fz_test_fill_text;
+	dev->stroke_text = fz_test_stroke_text;
+	dev->fill_shade = fz_test_fill_shade;
+	dev->fill_image = fz_test_fill_image;
+	dev->fill_image_mask = fz_test_fill_image_mask;
+
+	*iscolor = 0;
+
+	return dev;
+}