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update watermark with new features to make commands easier

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This commit is contained in:
bjcscat 2022-03-08 17:03:25 +00:00
parent 799c69dcc9
commit d2b0aa4f99
1 changed files with 51 additions and 5 deletions
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56
natives/watermark.cc
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@ -7,6 +7,47 @@
using namespace std; using namespace std;
using namespace Magick; using namespace Magick;
Magick::GravityType NapiToGravity(const Napi::Value gravity) {
Magick::GravityType g = Magick::GravityType();
if (gravity.IsNumber()) {
return Magick::GravityType(gravity.As<Napi::Number>().Int64Value());
}else if (gravity.IsString()) {
string grav = gravity.As<Napi::String>().Utf8Value();
if (grav == "northwest") {
g = Magick::NorthWestGravity;
} else if (grav == "north") {
g = Magick::NorthGravity;
} else if (grav == "northeast") {
g = Magick::NorthEastGravity;
} else if (grav == "west") {
g = Magick::WestGravity;
} else if (grav == "center") {
g = Magick::CenterGravity;
} else if (grav == "east") {
g = Magick::EastGravity;
} else if (grav == "southwest") {
g = Magick::SouthWestGravity;
} else if (grav == "south") {
g = Magick::SouthGravity;
} else if (grav == "southeast") {
g = Magick::SouthEastGravity;
} else if (grav == "forget") {
g = Magick::ForgetGravity;
} else if (grav == "north_east") {
g = Magick::NorthEastGravity;
} else if (grav == "north_west") {
g = Magick::NorthWestGravity;
} else if (grav == "south_east") {
g = Magick::SouthEastGravity;
} else if (grav == "south_west") {
g = Magick::SouthWestGravity;
} else {
g = Magick::CenterGravity;
}
}
return g;
}
Napi::Value Watermark(const Napi::CallbackInfo &info) { Napi::Value Watermark(const Napi::CallbackInfo &info) {
Napi::Env env = info.Env(); Napi::Env env = info.Env();
@ -14,10 +55,12 @@ Napi::Value Watermark(const Napi::CallbackInfo &info) {
Napi::Object obj = info[0].As<Napi::Object>(); Napi::Object obj = info[0].As<Napi::Object>();
Napi::Buffer<char> data = obj.Get("data").As<Napi::Buffer<char>>(); Napi::Buffer<char> data = obj.Get("data").As<Napi::Buffer<char>>();
string water = obj.Get("water").As<Napi::String>().Utf8Value(); string water = obj.Get("water").As<Napi::String>().Utf8Value();
int gravity = obj.Get("gravity").As<Napi::Number>().Int32Value(); Magick::GravityType gravity = NapiToGravity(obj.Get("gravity"));
bool resize = obj.Has("resize") bool resize = obj.Has("resize")
? obj.Get("resize").As<Napi::Boolean>().Value() ? obj.Get("resize").As<Napi::Boolean>().Value()
: false; : false;
float yscale = obj.Has("yscale")
? obj.Get("yscale").As<Napi::Number>().FloatValue() : false;
bool append = obj.Has("append") bool append = obj.Has("append")
? obj.Get("append").As<Napi::Boolean>().Value() ? obj.Get("append").As<Napi::Boolean>().Value()
: false; : false;
@ -43,8 +86,11 @@ Napi::Value Watermark(const Napi::CallbackInfo &info) {
if (resize && append) { if (resize && append) {
string query(to_string(frames.front().baseColumns()) + "x"); string query(to_string(frames.front().baseColumns()) + "x");
watermark.scale(Geometry(query)); watermark.scale(Geometry(query));
} else if (resize&&yscale) {
string query(to_string(frames.front().baseColumns())+"x"+to_string(frames.front().baseRows()*yscale)+"!");
watermark.resize(Geometry(query));
} else if (resize) { } else if (resize) {
string query("x" + to_string(frames.front().baseRows())); string query("x"+to_string(frames.front().baseRows()));
watermark.scale(Geometry(query)); watermark.scale(Geometry(query));
} }
coalesceImages(&coalesced, frames.begin(), frames.end()); coalesceImages(&coalesced, frames.begin(), frames.end());
@ -60,11 +106,11 @@ Napi::Value Watermark(const Napi::CallbackInfo &info) {
} else if (mc) { } else if (mc) {
image.backgroundColor("white"); image.backgroundColor("white");
image.extent(Geometry(image.columns(), image.rows() + 15)); image.extent(Geometry(image.columns(), image.rows() + 15));
image.composite(watermark, Magick::GravityType(gravity), image.composite(watermark, gravity,
Magick::OverCompositeOp); Magick::OverCompositeOp);
final = image; final = image;
} else { } else {
image.composite(watermark, Magick::GravityType(gravity), image.composite(watermark, gravity,
Magick::OverCompositeOp); Magick::OverCompositeOp);
final = image; final = image;
} }
@ -94,4 +140,4 @@ Napi::Value Watermark(const Napi::CallbackInfo &info) {
} catch (...) { } catch (...) {
throw Napi::Error::New(env, "Unknown error"); throw Napi::Error::New(env, "Unknown error");
} }
} }