#include "Panel.h"

namespace UI {

Panel::Panel(Size size) {
    focusable = false;
    padding = Thickness(0.0f, 0.0f);
    if (size.width > 0.0f || size.height > 0.0f) {
        minSize = size;
        maxSize = size;
    }
}

void Panel::RefreshPrimitives() { // this needs optimize
    bgRect = std::make_unique<Rectangle>(globalBounds.X, globalBounds.Y, globalBounds.Width, globalBounds.Height);
    bgRect->SetColor(bgColor.r, bgColor.g, bgColor.b, bgColor.a);
    bgRect->SetBorderColor(borderColor.r, borderColor.g, borderColor.b, borderColor.a);
    bgRect->SetBorderWidth(borderThickness);
    bgRect->SetRoundness(borderRoundness);
    previousColor = bgColor;
}

void Panel::Measure(Size availableSpace) {
    Widget::Measure(availableSpace);
}

void Panel::Arrange(Rect finalBounds) {
    Rect oldGlobal = globalBounds;
    bool needsRefresh = IsDirty(DirtyFlags::Render | DirtyFlags::Layout);
    Widget::Arrange(finalBounds);

    if (needsRefresh || globalBounds != oldGlobal) {
        RefreshPrimitives();
    }
}

void Panel::Draw() {
    if (!visible) return;

    if (!bgRect || IsDirty(DirtyFlags::Layout)) {
        RefreshPrimitives();
    }

    if (bgColor != previousColor) {
        bgRect->SetColor(bgColor.r, bgColor.g, bgColor.b, bgColor.a);
        previousColor = bgColor;
    }

    if (bgRect) {
        bgRect->Render();
    }

    Widget::Draw();
}

}