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binding wasm: support the animation.
This commit is contained in:
Hermet Park
Hermet Park
parent
cee59dcd0e
commit
496ec72f2a
1 changed files with 93 additions and 74 deletions
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@ -33,6 +33,7 @@ static const char* NoError = "None";
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class __attribute__((visibility("default"))) TvgWasm
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{
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//This structure data should be aligned with the ThorVG Viewer implementation.
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struct Layer
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{
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uint32_t paint; //cast of a paint pointer
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@ -63,32 +64,23 @@ public:
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{
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errorMsg = NoError;
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if (!canvas) {
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errorMsg = "Invalid canvas";
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return false;
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}
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if (!canvas) return false;
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if (data.empty()) {
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errorMsg = "Invalid data";
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return false;
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}
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picture = Picture::gen().release();
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if (!picture) {
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errorMsg = "Invalid picture";
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canvas->clear(true);
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animation = Animation::gen();
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if (animation->picture()->load(data.c_str(), data.size(), mimetype, false) != Result::Success) {
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errorMsg = "load() fail";
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return false;
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}
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canvas->clear();
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if (picture->load(data.c_str(), data.size(), mimetype, false) != Result::Success) {
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delete(picture);
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picture = nullptr;
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errorMsg = "Fail, load()";
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return false;
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}
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picture->size(&psize[0], &psize[1]);
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animation->picture()->size(&psize[0], &psize[1]);
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/* need to reset size to calculate scale in Picture.size internally before calling resize() */
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this->width = 0;
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@ -96,33 +88,23 @@ public:
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resize(width, height);
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if (canvas->push(cast<Picture>(picture)) != Result::Success) {
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errorMsg = "Fail, push()";
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if (canvas->push(cast<Picture>(animation->picture())) != Result::Success) {
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errorMsg = "push() fail";
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return false;
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}
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return true;
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}
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bool update(int width, int height, bool force)
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bool update()
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{
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errorMsg = NoError;
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if (!canvas || !picture) {
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errorMsg = "Invalid Conditions";
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if (canvas->update() != Result::Success) {
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errorMsg = "update() fail";
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return false;
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}
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if (!force && this->width == width && this->height == height) {
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return true;
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}
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resize(width, height);
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if (canvas->update(picture) != Result::Success) {
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errorMsg = "Fail, update()";
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return false;
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}
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return true;
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}
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@ -130,13 +112,10 @@ public:
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{
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errorMsg = NoError;
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if (!canvas) {
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errorMsg = "Invalid canvas";
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return val(typed_memory_view<uint8_t>(0, nullptr));
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}
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if (!canvas || !animation) return val(typed_memory_view<uint8_t>(0, nullptr));
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if (canvas->draw() != Result::Success) {
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errorMsg = "Fail, draw()";
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errorMsg = "draw() fail";
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return val(typed_memory_view<uint8_t>(0, nullptr));
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}
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@ -150,49 +129,107 @@ public:
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return val(typed_memory_view(2, psize));
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}
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val duration()
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{
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if (!canvas || !animation) return val(0);
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return val(animation->duration());
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}
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val totalFrame()
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{
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if (!canvas || !animation) return val(0);
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return val(animation->totalFrame());
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}
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bool frame(uint32_t no)
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{
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if (!canvas || !animation) return false;
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if (animation->frame(no) != Result::Success) {
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errorMsg = "frame() fail";
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return false;
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}
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return true;
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}
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void resize(int width, int height)
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{
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if (!canvas || !animation) return;
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if (this->width == width && this->height == height) return;
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this->width = width;
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this->height = height;
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buffer = (uint8_t*)malloc(width * height * sizeof(uint32_t));
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canvas->target((uint32_t *)buffer, width, width, height, SwCanvas::ABGR8888S);
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float scale;
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float shiftX = 0.0f, shiftY = 0.0f;
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if (psize[0] > psize[1]) {
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scale = width / psize[0];
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shiftY = (height - psize[1] * scale) * 0.5f;
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} else {
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scale = height / psize[1];
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shiftX = (width - psize[0] * scale) * 0.5f;
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}
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animation->picture()->scale(scale);
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animation->picture()->translate(shiftX, shiftY);
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}
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bool save(bool compress)
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{
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errorMsg = NoError;
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if (!canvas || !animation) return false;
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auto saver = Saver::gen();
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if (!saver) {
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errorMsg = "Invalid saver";
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return false;
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}
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auto duplicate = cast<Picture>(picture->duplicate());
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auto duplicate = cast<Picture>(animation->picture()->duplicate());
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if (!duplicate) {
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errorMsg = "Invalid dupliate";
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errorMsg = "duplicate(), fail";
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return false;
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}
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if (saver->save(std::move(duplicate), "output.tvg", compress) != tvg::Result::Success) {
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errorMsg = "Fail, save()";
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errorMsg = "save(), fail";
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return false;
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}
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saver->sync();
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return true;
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}
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val layers()
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{
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if (!canvas || !animation) return val(nullptr);
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//returns an array of a structure Layer: [id] [depth] [type] [composite]
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children.reset();
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sublayers(&children, picture, 0);
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sublayers(&children, animation->picture(), 0);
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return val(typed_memory_view(children.count * sizeof(Layer) / sizeof(uint32_t), (uint32_t *)(children.data)));
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}
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bool opacity(uint32_t pid, uint8_t opacity)
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bool opacity(uint32_t id, uint8_t opacity)
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{
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auto paint = findPaintById(picture, pid, nullptr);
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if (!canvas || !animation) return false;
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auto paint = findPaintById(animation->picture(), id, nullptr);
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if (!paint) return false;
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const_cast<Paint*>(paint)->opacity(opacity);
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return true;
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}
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val geometry(uint32_t pid)
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val geometry(uint32_t id)
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{
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if (!canvas || !animation) return val(typed_memory_view<float>(0, nullptr));
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Array<const Paint*> parents;
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auto paint = findPaintById(picture, pid, &parents);
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auto paint = findPaintById(animation->picture(), id, &parents);
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if (!paint) return val(typed_memory_view<float>(0, nullptr));
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paint->bounds(&bounds[0], &bounds[1], &bounds[2], &bounds[3], false);
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@ -225,38 +262,16 @@ private:
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{
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errorMsg = NoError;
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Initializer::init(CanvasEngine::Sw, 0);
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canvas = SwCanvas::gen();
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if (!canvas) {
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errorMsg = "Invalid canvas";
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if (Initializer::init(CanvasEngine::Sw, 0) != Result::Success) {
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errorMsg = "init() fail";
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return;
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}
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}
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void resize(int width, int height)
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{
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if (!canvas) return;
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if (this->width == width && this->height == height) return;
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canvas = SwCanvas::gen();
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if (!canvas) errorMsg = "Invalid canvas";
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this->width = width;
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this->height = height;
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buffer = (uint8_t*)malloc(width * height * sizeof(uint32_t));
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canvas->target((uint32_t *)buffer, width, width, height, SwCanvas::ABGR8888S);
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if (picture) {
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float scale;
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float shiftX = 0.0f, shiftY = 0.0f;
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if (psize[0] > psize[1]) {
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scale = width / psize[0];
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shiftY = (height - psize[1] * scale) * 0.5f;
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} else {
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scale = height / psize[1];
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shiftX = (width - psize[0] * scale) * 0.5f;
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}
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picture->scale(scale);
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picture->translate(shiftX, shiftY);
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}
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animation = Animation::gen();
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if (!animation) errorMsg = "Invalid animation";
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}
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void sublayers(Array<Layer>* layers, const Paint* paint, uint32_t depth)
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@ -317,7 +332,7 @@ private:
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private:
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string errorMsg;
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unique_ptr<SwCanvas> canvas = nullptr;
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Picture* picture = nullptr;
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unique_ptr<Animation> animation = nullptr;
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uint8_t* buffer = nullptr;
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Array<Layer> children;
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uint32_t width = 0;
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@ -333,8 +348,12 @@ EMSCRIPTEN_BINDINGS(thorvg_bindings) {
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.function("error", &TvgWasm::error, allow_raw_pointers())
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.function("load", &TvgWasm::load)
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.function("update", &TvgWasm::update)
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.function("resize", &TvgWasm::resize)
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.function("render", &TvgWasm::render)
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.function("size", &TvgWasm::size)
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.function("duration", &TvgWasm::duration)
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.function("totalFrame", &TvgWasm::totalFrame)
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.function("frame", &TvgWasm::frame)
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.function("save", &TvgWasm::save)
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.function("layers", &TvgWasm::layers)
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.function("geometry", &TvgWasm::geometry)
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