| /* |
| * Copyright 2018 Google Inc. |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #include "SkottiePriv.h" |
| |
| #include "SkData.h" |
| #include "SkFontMgr.h" |
| #include "SkMakeUnique.h" |
| #include "SkottieAdapter.h" |
| #include "SkottieJson.h" |
| #include "SkottieValue.h" |
| #include "SkSGColor.h" |
| #include "SkSGDraw.h" |
| #include "SkSGGroup.h" |
| #include "SkSGText.h" |
| #include "SkTypes.h" |
| |
| #include <string.h> |
| |
| namespace skottie { |
| namespace internal { |
| |
| namespace { |
| |
| SkFontStyle FontStyle(const char* style) { |
| static constexpr struct { |
| const char* fName; |
| const SkFontStyle::Weight fWeight; |
| } gWeightMap[] = { |
| { "ExtraLight", SkFontStyle::kExtraLight_Weight }, |
| { "Light" , SkFontStyle::kLight_Weight }, |
| { "Regular" , SkFontStyle::kNormal_Weight }, |
| { "Medium" , SkFontStyle::kMedium_Weight }, |
| { "SemiBold" , SkFontStyle::kSemiBold_Weight }, |
| { "Bold" , SkFontStyle::kBold_Weight }, |
| { "ExtraBold" , SkFontStyle::kExtraBold_Weight }, |
| }; |
| |
| SkFontStyle::Weight weight = SkFontStyle::kNormal_Weight; |
| for (const auto& w : gWeightMap) { |
| const auto name_len = strlen(w.fName); |
| if (!strncmp(style, w.fName, name_len)) { |
| weight = w.fWeight; |
| style += name_len; |
| break; |
| } |
| } |
| |
| static constexpr struct { |
| const char* fName; |
| const SkFontStyle::Slant fSlant; |
| } gSlantMap[] = { |
| { "Italic" , SkFontStyle::kItalic_Slant }, |
| { "Oblique", SkFontStyle::kOblique_Slant }, |
| }; |
| |
| SkFontStyle::Slant slant = SkFontStyle::kUpright_Slant; |
| if (*style != '\0') { |
| for (const auto& s : gSlantMap) { |
| if (!strcmp(style, s.fName)) { |
| slant = s.fSlant; |
| style += strlen(s.fName); |
| break; |
| } |
| } |
| } |
| |
| if (*style != '\0') { |
| LOG("?? Unknown font style: %s\n", style); |
| } |
| |
| return SkFontStyle(weight, SkFontStyle::kNormal_Width, slant); |
| } |
| |
| } // namespace |
| |
| bool AnimationBuilder::FontInfo::matches(const char family[], const char style[]) const { |
| return 0 == strcmp(fFamily.c_str(), family) |
| && 0 == strcmp(fStyle.c_str(), style); |
| } |
| |
| void AnimationBuilder::parseFonts(const skjson::ObjectValue* jfonts, |
| const skjson::ArrayValue* jchars) { |
| // Optional array of font entries, referenced (by name) from text layer document nodes. E.g. |
| // "fonts": { |
| // "list": [ |
| // { |
| // "ascent": 75, |
| // "fClass": "", |
| // "fFamily": "Roboto", |
| // "fName": "Roboto-Regular", |
| // "fPath": "https://fonts.googleapis.com/css?family=Roboto", |
| // "fPath": "", |
| // "fStyle": "Regular", |
| // "fWeight": "", |
| // "origin": 1 |
| // } |
| // ] |
| // }, |
| if (jfonts) { |
| if (const skjson::ArrayValue* jlist = (*jfonts)["list"]) { |
| for (const skjson::ObjectValue* jfont : *jlist) { |
| if (!jfont) { |
| continue; |
| } |
| |
| const skjson::StringValue* jname = (*jfont)["fName"]; |
| const skjson::StringValue* jfamily = (*jfont)["fFamily"]; |
| const skjson::StringValue* jstyle = (*jfont)["fStyle"]; |
| const skjson::StringValue* jpath = (*jfont)["fPath"]; |
| |
| if (!jname || !jname->size() || |
| !jfamily || !jfamily->size() || |
| !jstyle || !jstyle->size()) { |
| LogJSON(*jfont, "!! Ignoring invalid font"); |
| continue; |
| } |
| |
| const auto& fmgr = fLazyFontMgr.get(); |
| |
| // Typeface fallback order: |
| // 1) externally-loaded font (provided by the embedder) |
| // 2) system font (family/style) |
| // 3) system default |
| |
| sk_sp<SkTypeface> tf = |
| fmgr->makeFromData(fResourceProvider->loadFont(jname->begin(), |
| jpath ? jpath->begin() |
| : nullptr)); |
| |
| if (!tf) { |
| tf.reset(fmgr->matchFamilyStyle(jfamily->begin(), FontStyle(jstyle->begin()))); |
| } |
| |
| if (!tf) { |
| LOG("!! Could not create typeface for %s|%s\n", |
| jfamily->begin(), jstyle->begin()); |
| // Last resort. |
| tf = fmgr->legacyMakeTypeface(nullptr, FontStyle(jstyle->begin())); |
| if (!tf) { |
| continue; |
| } |
| } |
| |
| fFonts.set(SkString(jname->begin(), jname->size()), |
| { |
| SkString(jfamily->begin(), jfamily->size()), |
| SkString(jstyle->begin(), jstyle->size()), |
| ParseDefault((*jfont)["ascent"] , 0.0f), |
| std::move(tf) |
| }); |
| } |
| } |
| } |
| |
| // Optional array of glyphs, to be associated with one of the declared fonts. E.g. |
| // "chars": [ |
| // { |
| // "ch": "t", |
| // "data": { |
| // "shapes": [...] |
| // }, |
| // "fFamily": "Roboto", |
| // "size": 50, |
| // "style": "Regular", |
| // "w": 32.67 |
| // } |
| // ] |
| if (jchars) { |
| FontInfo* current_font = nullptr; |
| |
| for (const skjson::ObjectValue* jchar : *jchars) { |
| if (!jchar) { |
| continue; |
| } |
| |
| const skjson::StringValue* jch = (*jchar)["ch"]; |
| if (!jch) { |
| continue; |
| } |
| |
| const skjson::StringValue* jfamily = (*jchar)["fFamily"]; |
| const skjson::StringValue* jstyle = (*jchar)["style"]; // "style", not "fStyle"... |
| |
| const auto* ch_ptr = jch->begin(); |
| const auto ch_len = jch->size(); |
| |
| if (!jfamily || !jstyle || (SkUTF::CountUTF8(ch_ptr, ch_len) != 1)) { |
| LogJSON(*jchar, "!! Invalid glyph"); |
| continue; |
| } |
| |
| const auto uni = SkUTF::NextUTF8(&ch_ptr, ch_ptr + ch_len); |
| SkASSERT(uni != -1); |
| |
| const auto* family = jfamily->begin(); |
| const auto* style = jstyle->begin(); |
| |
| // Locate (and cache) the font info. Unlike text nodes, glyphs reference the font by |
| // (family, style) -- not by name :( For now this performs a linear search over *all* |
| // fonts: generally there are few of them, and glyph definitions are font-clustered. |
| // If problematic, we can refactor as a two-level hashmap. |
| if (!current_font || !current_font->matches(family, style)) { |
| current_font = nullptr; |
| fFonts.foreach([&](const SkString& name, FontInfo* finfo) { |
| if (finfo->matches(family, style)) { |
| current_font = finfo; |
| // TODO: would be nice to break early here... |
| } |
| }); |
| if (!current_font) { |
| LOG("!! Font not found for codepoint (%d, %s, %s)\n", uni, family, style); |
| continue; |
| } |
| } |
| |
| // TODO: parse glyphs |
| } |
| } |
| } |
| |
| sk_sp<SkTypeface> AnimationBuilder::findFont(const SkString& font_name) const { |
| if (const auto* font = fFonts.find(font_name)) { |
| return font->fTypeface; |
| } |
| |
| LOG("!! Unknown font: \"%s\"\n", font_name.c_str()); |
| return nullptr; |
| } |
| |
| sk_sp<sksg::RenderNode> AnimationBuilder::attachTextLayer(const skjson::ObjectValue& layer, |
| AnimatorScope* ascope) const { |
| // General text node format: |
| // "t": { |
| // "a": [], // animators (TODO) |
| // "d": { |
| // "k": [ |
| // { |
| // "s": { |
| // "f": "Roboto-Regular", |
| // "fc": [ |
| // 0.42, |
| // 0.15, |
| // 0.15 |
| // ], |
| // "j": 1, |
| // "lh": 60, |
| // "ls": 0, |
| // "s": 50, |
| // "t": "text align right", |
| // "tr": 0 |
| // }, |
| // "t": 0 |
| // } |
| // ] |
| // }, |
| // "m": {}, // "more options" (TODO) |
| // "p": {} // "path options" (TODO) |
| // }, |
| const skjson::ObjectValue* jt = layer["t"]; |
| if (!jt) { |
| LogJSON(layer, "!! Missing text layer \"t\" property"); |
| return nullptr; |
| } |
| |
| const skjson::ArrayValue* animated_props = (*jt)["a"]; |
| if (animated_props && animated_props->size() > 0) { |
| LOG("?? Unsupported animated text properties.\n"); |
| } |
| |
| const skjson::ObjectValue* jd = (*jt)["d"]; |
| if (!jd) { |
| return nullptr; |
| } |
| |
| auto text_root = sksg::Group::Make(); |
| auto adapter = sk_make_sp<TextAdapter>(text_root); |
| |
| this->bindProperty<TextValue>(*jd, ascope, [adapter] (const TextValue& txt) { |
| adapter->setText(txt); |
| }); |
| |
| return std::move(text_root); |
| } |
| |
| } // namespace internal |
| } // namespace skottie |
