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#include "cru/ui/render/BorderRenderObject.h"
#include "../Helper.h"
#include "cru/common/log/Logger.h"
#include "cru/platform/graphics/Factory.h"
#include "cru/platform/graphics/Geometry.h"
#include "cru/platform/graphics/Painter.h"
#include "cru/ui/DebugFlags.h"
#include <algorithm>
namespace cru::ui::render {
BorderRenderObject::BorderRenderObject() { RecreateGeometry(); }
BorderRenderObject::~BorderRenderObject() {}
void BorderRenderObject::ApplyBorderStyle(
const style::ApplyBorderStyleInfo& style) {
if (style.border_brush) border_brush_ = *style.border_brush;
if (style.border_thickness) border_thickness_ = *style.border_thickness;
if (style.border_radius) border_radius_ = *style.border_radius;
if (style.foreground_brush) foreground_brush_ = *style.foreground_brush;
if (style.background_brush) background_brush_ = *style.background_brush;
InvalidateLayout();
}
void BorderRenderObject::SetBorderEnabled(bool enabled) {
if (is_border_enabled_ == enabled) return;
is_border_enabled_ = enabled;
InvalidateLayout();
}
void BorderRenderObject::SetBorderBrush(
std::shared_ptr<platform::graphics::IBrush> brush) {
if (brush == border_brush_) return;
border_brush_ = std::move(brush);
InvalidatePaint();
}
void BorderRenderObject::SetBorderThickness(const Thickness thickness) {
if (thickness == border_thickness_) return;
border_thickness_ = thickness;
InvalidateLayout();
}
void BorderRenderObject::SetBorderRadius(const CornerRadius radius) {
if (radius == border_radius_) return;
border_radius_ = radius;
RecreateGeometry();
}
void BorderRenderObject::SetForegroundBrush(
std::shared_ptr<platform::graphics::IBrush> brush) {
if (brush == foreground_brush_) return;
foreground_brush_ = std::move(brush);
InvalidatePaint();
}
void BorderRenderObject::SetBackgroundBrush(
std::shared_ptr<platform::graphics::IBrush> brush) {
if (brush == background_brush_) return;
background_brush_ = std::move(brush);
InvalidatePaint();
}
RenderObject* BorderRenderObject::HitTest(const Point& point) {
if (auto child = GetChild()) {
const auto result = child->HitTest(point - child->GetOffset());
if (result != nullptr) {
return result;
}
}
if (is_border_enabled_) {
return border_outer_geometry_->FillContains(point) ? this : nullptr;
} else {
return GetPaddingRect().IsPointInside(point) ? this : nullptr;
}
}
void BorderRenderObject::Draw(platform::graphics::IPainter* painter) {
if constexpr (debug_flags::draw) {
CRU_LOG_DEBUG(
u"BorderRenderObject draw, background: {}, foreground: {}.",
background_brush_ == nullptr ? u"NONE"
: background_brush_->GetDebugString(),
foreground_brush_ == nullptr ? u"NONE"
: foreground_brush_->GetDebugString());
}
if (background_brush_ != nullptr)
painter->FillGeometry(border_inner_geometry_.get(),
background_brush_.get());
if (is_border_enabled_) {
if (border_brush_ == nullptr) {
CRU_LOG_WARN(u"Border is enabled but border brush is null.");
} else {
painter->FillGeometry(geometry_.get(), border_brush_.get());
}
}
if (auto child = GetChild()) {
painter->PushState();
painter->ConcatTransform(Matrix::Translation(child->GetOffset()));
child->Draw(painter);
painter->PopState();
}
if (foreground_brush_ != nullptr)
painter->FillGeometry(border_inner_geometry_.get(),
foreground_brush_.get());
}
Size BorderRenderObject::OnMeasureContent(const MeasureRequirement& requirement,
const MeasureSize& preferred_size) {
if (auto child = GetChild()) {
child->Measure(requirement, preferred_size);
return child->GetDesiredSize();
} else {
return Size{};
}
}
void BorderRenderObject::OnLayoutContent(const Rect& content_rect) {
if (auto child = GetChild()) {
child->Layout(content_rect.GetLeftTop());
}
}
void BorderRenderObject::OnResize(const Size& new_size) { RecreateGeometry(); }
Thickness BorderRenderObject::GetOuterSpaceThickness() const {
return is_border_enabled_
? RenderObject::GetOuterSpaceThickness() + GetBorderThickness()
: RenderObject::GetOuterSpaceThickness();
}
Rect BorderRenderObject::GetPaddingRect() const {
const auto size = GetSize();
Rect rect{Point{}, size};
rect = rect.Shrink(GetMargin());
if (is_border_enabled_) rect = rect.Shrink(border_thickness_);
rect.left = std::min(rect.left, size.width);
rect.top = std::min(rect.top, size.height);
rect.width = std::max(rect.width, 0.0f);
rect.height = std::max(rect.height, 0.0f);
return rect;
}
Rect BorderRenderObject::GetContentRect() const {
const auto size = GetDesiredSize();
Rect rect{Point{}, size};
rect = rect.Shrink(GetMargin());
if (is_border_enabled_) rect = rect.Shrink(border_thickness_);
rect = rect.Shrink(GetPadding());
rect.left = std::min(rect.left, size.width);
rect.top = std::min(rect.top, size.height);
rect.width = std::max(rect.width, 0.0f);
rect.height = std::max(rect.height, 0.0f);
return rect;
}
void BorderRenderObject::RecreateGeometry() {
geometry_.reset();
border_outer_geometry_.reset();
Thickness t = border_thickness_;
t.left /= 2.0;
t.top /= 2.0;
t.right /= 2.0;
t.bottom /= 2.0;
const CornerRadius& r = border_radius_;
CornerRadius outer_radius(r.left_top + Point{t.left, t.top},
r.right_top + Point{t.right, t.top},
r.left_bottom + Point{t.left, t.bottom},
r.right_bottom + Point{t.right, t.bottom});
CornerRadius inner_radius(r.left_top - Point{t.left, t.top},
r.right_top - Point{t.right, t.top},
r.left_bottom - Point{t.left, t.bottom},
r.right_bottom - Point{t.right, t.bottom});
auto f = [](platform::graphics::IGeometryBuilder* builder, const Rect& rect,
const CornerRadius& corner) {
builder->BeginFigure(Point(rect.left + corner.left_top.x, rect.top));
builder->LineTo(Point(rect.GetRight() - corner.right_top.x, rect.top));
builder->QuadraticBezierTo(
Point(rect.GetRight(), rect.top),
Point(rect.GetRight(), rect.top + corner.right_top.y));
builder->LineTo(
Point(rect.GetRight(), rect.GetBottom() - corner.right_bottom.y));
builder->QuadraticBezierTo(
Point(rect.GetRight(), rect.GetBottom()),
Point(rect.GetRight() - corner.right_bottom.x, rect.GetBottom()));
builder->LineTo(Point(rect.left + corner.left_bottom.x, rect.GetBottom()));
builder->QuadraticBezierTo(
Point(rect.left, rect.GetBottom()),
Point(rect.left, rect.GetBottom() - corner.left_bottom.y));
builder->LineTo(Point(rect.left, rect.top + corner.left_top.y));
builder->QuadraticBezierTo(Point(rect.left, rect.top),
Point(rect.left + corner.left_top.x, rect.top));
builder->CloseFigure(true);
};
const auto size = GetDesiredSize();
const auto margin = GetMargin();
const Rect outer_rect{margin.left, margin.top,
size.width - margin.GetHorizontalTotal(),
size.height - margin.GetVerticalTotal()};
const auto graph_factory = GetGraphicsFactory();
std::unique_ptr<platform::graphics::IGeometryBuilder> builder{
graph_factory->CreateGeometryBuilder()};
f(builder.get(), outer_rect, outer_radius);
border_outer_geometry_ = builder->Build();
builder.reset();
const Rect inner_rect = outer_rect.Shrink(border_thickness_);
builder = graph_factory->CreateGeometryBuilder();
f(builder.get(), inner_rect, inner_radius);
border_inner_geometry_ = builder->Build();
builder.reset();
builder = graph_factory->CreateGeometryBuilder();
f(builder.get(), outer_rect, outer_radius);
f(builder.get(), inner_rect, inner_radius);
geometry_ = builder->Build();
builder.reset();
}
String BorderRenderObject::GetName() const { return u"BorderRenderObject"; }
} // namespace cru::ui::render
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