103 lines
3.5 KiB
C++
103 lines
3.5 KiB
C++
#include "pch.h"
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#include "RadialGradientView.h"
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#include "RadialGradientView.g.cpp"
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#include "Utils.h"
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using namespace winrt;
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using namespace Microsoft::ReactNative;
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namespace winrt::RNSVG::implementation {
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void RadialGradientView::UpdateProperties(IJSValueReader const &reader, bool forceUpdate, bool invalidate) {
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const JSValueObject &propertyMap{JSValue::ReadObjectFrom(reader)};
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for (auto const &pair : propertyMap) {
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auto const &propertyName{pair.first};
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auto const &propertyValue{pair.second};
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if (propertyName == "fx") {
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m_fx = SVGLength::From(propertyValue);
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} else if (propertyName == "fy") {
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m_fy = SVGLength::From(propertyValue);
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} else if (propertyName == "rx") {
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m_rx = SVGLength::From(propertyValue);
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} else if (propertyName == "ry") {
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m_ry = SVGLength::From(propertyValue);
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} else if (propertyName == "cx") {
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m_cx = SVGLength::From(propertyValue);
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} else if (propertyName == "cy") {
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m_cy = SVGLength::From(propertyValue);
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} else if (propertyName == "gradient") {
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m_stops = Utils::JSValueAsStops(propertyValue);
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} else if (propertyName == "gradientUnits") {
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m_gradientUnits = Utils::JSValueAsBrushUnits(propertyValue);
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} else if (propertyName == "gradientTransform") {
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m_transform = Utils::JSValueAsD2DTransform(propertyValue);
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if (propertyValue.IsNull()) {
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m_transform = D2D1::Matrix3x2F::Identity();
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}
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}
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}
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__super::UpdateProperties(reader, forceUpdate, invalidate);
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SaveDefinition();
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}
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void RadialGradientView::Unload() {
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m_stops.clear();
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__super::Unload();
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}
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void RadialGradientView::CreateBrush() {
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auto const root{SvgRoot()};
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com_ptr<ID2D1DeviceContext> deviceContext{get_self<D2DDeviceContext>(root.DeviceContext())->Get()};
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winrt::com_ptr<ID2D1GradientStopCollection> stopCollection;
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winrt::check_hresult(deviceContext->CreateGradientStopCollection(&m_stops[0], static_cast<uint32_t>(m_stops.size()), stopCollection.put()));
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D2D1_RADIAL_GRADIENT_BRUSH_PROPERTIES brushProperties{};
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winrt::com_ptr<ID2D1RadialGradientBrush> radialBrush;
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winrt::check_hresult(
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deviceContext->CreateRadialGradientBrush(brushProperties, stopCollection.get(), radialBrush.put()));
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SetPoints(radialBrush.get(), {0, 0, static_cast<float>(root.ActualWidth()), static_cast<float>(root.ActualHeight())});
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if (!m_transform.IsIdentity()) {
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radialBrush->SetTransform(m_transform);
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}
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m_brush = make<RNSVG::implementation::D2DBrush>(radialBrush.as<ID2D1Brush>());
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}
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void RadialGradientView::UpdateBounds() {
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if (m_gradientUnits == "objectBoundingBox") {
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com_ptr<ID2D1RadialGradientBrush> brush{get_self<D2DBrush>(m_brush)->Get().as<ID2D1RadialGradientBrush>()};
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SetPoints(brush.get(), m_bounds);
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}
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}
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void RadialGradientView::SetPoints(ID2D1RadialGradientBrush *brush, D2D1_RECT_F bounds) {
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float width{D2DHelpers::WidthFromD2DRect(bounds)};
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float height{D2DHelpers::HeightFromD2DRect(bounds)};
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float rx{Utils::GetAbsoluteLength(m_rx, width)};
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float ry{Utils::GetAbsoluteLength(m_ry, height)};
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float fx{Utils::GetAbsoluteLength(m_fx, width) + bounds.left};
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float fy{Utils::GetAbsoluteLength(m_fy, height) + bounds.top};
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float cx{Utils::GetAbsoluteLength(m_cx, width) + bounds.left};
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float cy{Utils::GetAbsoluteLength(m_cy, height) + bounds.top};
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brush->SetRadiusX(rx);
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brush->SetRadiusY(ry);
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brush->SetCenter({cx, cy});
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brush->SetGradientOriginOffset({(fx - cx), (fy - cy)});
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}
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} // namespace winrt::RNSVG::implementation
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