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/* This file is part of the Spring engine (GPL v2 or later), see LICENSE.html */
#include <algorithm>
#include "HorizontalLayout.h"
#include "Gui.h"
#include "Rendering/GL/myGL.h"
namespace agui
{
HorizontalLayout::HorizontalLayout(GuiElement* parent) : GuiElement(parent)
{
}
void HorizontalLayout::DrawSelf()
{
if (!visibleBorder)
return;
gui->SetColor(1.0f, 1.0f, 1.0f, Opacity());
DrawOutline();
}
void HorizontalLayout::GeometryChangeSelf()
{
GuiElement::GeometryChangeSelf();
if (children.empty())
return;
unsigned numFixedObjs = 0;
unsigned sumObjWeight = 0;
float totalFixedSize = 0.0;
for (const auto& child: children) {
if (!child->SizeFixed())
continue;
numFixedObjs += 1;
totalFixedSize += child->GetSize()[0];
}
for (const auto& child: children) {
sumObjWeight += child->Weight();
}
const float hspaceBorder = 2.0f * borderSpacing;
const float hspaceTotal = std::max(1.0f, float(sumObjWeight - numFixedObjs));
const float hspacePerObj = (size[0] - float(sumObjWeight - 1) * itemSpacing - hspaceBorder - totalFixedSize) / hspaceTotal;
float startX = pos[0] + borderSpacing;
for (const auto& child: children) {
child->SetPos(startX, pos[1] + borderSpacing);
if (child->SizeFixed()) {
child->SetSize(child->GetSize()[0], size[1] - hspaceBorder, true);
startX += child->GetSize()[0] + itemSpacing;
} else {
child->SetSize(hspacePerObj * float(child->Weight()), size[1] - hspaceBorder);
startX += hspacePerObj*float(child->Weight()) + itemSpacing;
}
}
}
}
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