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wasm: Revise saver methods

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This commit is contained in:
Jinny You 2023-12-29 16:25:09 +09:00 • committed by Hermet Park
parent cf76f2f604
commit 959f45313e
1 changed files with 51 additions and 21 deletions
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72
src/bindings/wasm/tvgWasmLottieAnimation.cpp
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@ -88,6 +88,11 @@ public:
animation = Animation::gen();
string filetype = mimetype;
if (filetype == "json") {
filetype = "lottie";
}
if (animation->picture()->load(data.c_str(), data.size(), mimetype, false) != Result::Success) {
errorMsg = "load() fail";
return false;
@ -182,27 +187,23 @@ public:
}
// Saver methods
bool save2Gif(string data, string mimetype, int width, int height, int fps)
bool save(string mimetype)
{
if (mimetype == "gif") {
return save2Gif();
} else if (mimetype == "tvg") {
return save2Tvg();
}
errorMsg = "Invalid mimetype";
return false;
}
bool save2Gif()
{
errorMsg = NoError;
auto animation = Animation::gen();
if (!animation) {
errorMsg = "Invalid animation";
return false;
}
if (animation->picture()->load(data.c_str(), data.size(), mimetype, false) != Result::Success) {
errorMsg = "load() fail";
return false;
}
//keep the aspect ratio.
float ow, oh;
animation->picture()->size(&ow, &oh);
float scale = static_cast<float>(width) / ow;
animation->picture()->size(ow * scale, oh * scale);
if (!animation) return false;
auto saver = Saver::gen();
if (!saver) {
@ -213,11 +214,40 @@ public:
//set a white opaque background
auto bg = tvg::Shape::gen();
bg->fill(255, 255, 255, 255);
bg->appendRect(0, 0, ow * scale, oh * scale);
bg->appendRect(0, 0, width, height);
saver->background(std::move(bg));
if (saver->save(std::move(animation), "output.gif", 100, fps) != tvg::Result::Success) {
if (saver->save(std::move(animation), "output.gif", 100, 30) != tvg::Result::Success) {
errorMsg = "save(), fail";
return false;
}
saver->sync();
return true;
}
bool save2Tvg()
{
errorMsg = NoError;
if (!animation) return false;
auto duplicate = cast<Picture>(animation->picture()->duplicate());
if (!duplicate) {
errorMsg = "duplicate(), fail";
return false;
}
auto saver = Saver::gen();
if (!saver) {
errorMsg = "Invalid saver";
return false;
}
if (saver->save(std::move(duplicate), "output.tvg") != tvg::Result::Success) {
errorMsg = "save(), fail";
return false;
}
@ -271,5 +301,5 @@ EMSCRIPTEN_BINDINGS(thorvg_bindings)
.function("update", &TvgLottieAnimation ::update)
.function("frame", &TvgLottieAnimation ::frame)
.function("resize", &TvgLottieAnimation ::resize)
.function("save2Gif", &TvgLottieAnimation ::save2Gif);
.function("save", &TvgLottieAnimation ::save);
}