| 468 | } |
| 469 | |
| 470 | std::string XChart::GetScaleTicks(const std::string &field) noexcept { |
| 471 | nlohmann::json rst = {}; |
| 472 | if (!canvasContext_ || !canvasContext_->IsValid()) { |
| 473 | return rst.dump(); |
| 474 | } |
| 475 | |
| 476 | scale::AbstractScale &scale = this->GetScale(field); |
| 477 | std::vector<scale::Tick> ticks = scale.GetTicks(this); |
| 478 | |
| 479 | for(std::size_t i = 0; i < ticks.size(); ++i) { |
| 480 | scale::Tick &tick = ticks[i]; |
| 481 | nlohmann::json item = {{"text", tick.text}, {"tickValue", tick.tickValue}, {"value", tick.value}}; |
| 482 | rst.push_back(item); |
| 483 | } |
| 484 | return rst.dump(); |
| 485 | } |
| 486 | |
| 487 | bool XChart::Render() { |
| 488 | this->logTracer_->trace("#Render %s", "start render"); |