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Add support for preserveAspectRatio for both SVG and bitmap input

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jaseg 2021-01-29 23:20:16 +01:00
parent a34efc058a
commit 52dcceb87f
3 changed files with 102 additions and 12 deletions
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17
src/main.cpp
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@ -64,6 +64,9 @@ int main(int argc, char **argv) {
{"size", {"-s", "--size"},
"Bitmap mode only: Physical size of output image in mm. Format: 12.34x56.78",
1},
{"preserve_aspect_ratio", {"-a", "--preserve-aspect-ratio"},
"Bitmap mode only: Preserve aspect ratio of image. Allowed values are meet, slice. Can also parse full SVG preserveAspectRatio syntax.",
1},
{"skip_usvg", {"--no-usvg"},
"Do not preprocess input using usvg (do not use unless you know *exactly* what you're doing)",
0},
@ -252,7 +255,19 @@ int main(int argc, char **argv) {
<< width << " " << height << "\" "
<< "xmlns=\"http://www.w3.org/2000/svg\" xmlns:xlink=\"http://www.w3.org/1999/xlink\">" << endl;
svg << "<image width=\"" << width << "\" height=\"" << height << "\" x=\"0\" y=\"0\" xlink:href=\"data:image/png;base64,";
string par_attr = "none";
if (args["preserve_aspect_ratio"]) {
string aspect_ratio = args["preserve_aspect_ratio"].as<string>();
if (aspect_ratio == "meet") {
par_attr = "xMidYMid meet";
} else if (aspect_ratio == "slice") {
par_attr = "xMidYMid slice";
} else {
par_attr = aspect_ratio;
}
}
svg << "<image width=\"" << width << "\" height=\"" << height << "\" x=\"0\" y=\"0\" preserveAspectRatio=\""
<< par_attr << "\" xlink:href=\"data:image/png;base64,";
/* c++ has the best hacks */
std::ostringstream sstr;