jgrogan/stuff-from-scratch
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Add some widget layout and ability event handling.

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This commit is contained in:
jmsgrogan 2020-06-20 19:00:06 +01:00
parent b99708e7d3
commit 4e85edacc8
24 changed files with 285 additions and 31 deletions
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32
src/ui_elements/widgets/HorizontalSpacer.cpp
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@ -1,9 +1,11 @@
#include "HorizontalSpacer.h"
#include <algorithm>
#include <numeric>
HorizontalSpacer::HorizontalSpacer()
: Widget()
: Widget(),
mScales()
{
}
@ -13,18 +15,42 @@ std::unique_ptr<HorizontalSpacer> HorizontalSpacer::Create()
return std::make_unique<HorizontalSpacer>();
}
void HorizontalSpacer::AddWidget(WidgetUPtr widget)
{
AddWidgetWithScale(std::move(widget), 1.0);
}
void HorizontalSpacer::AddWidgetWithScale(WidgetUPtr widget, double scale)
{
Widget::AddWidget(std::move(widget));
mScales.push_back(scale);
}
void HorizontalSpacer::AddChildLayers(const PaintEvent* event)
{
mLayers.clear();
unsigned delta = mHeight / mChildren.size();
double scaleSum = std::accumulate(mScales.begin(), mScales.end(), 0.0);
double offset = 0;
double height = mHeight;
if (mMaxHeight > 0 && height > mMaxHeight)
{
height = mMaxHeight;
}
for(std::size_t idx=0; idx<mChildren.size(); idx++)
{
auto& child = mChildren[idx];
double scale = mScales[idx];
double delta = height * (scale/scaleSum);
if (child->GetMaxHeight() > 0 && delta > child->GetMaxHeight())
{
delta = child->GetMaxHeight();
}
child->SetSize(mWidth, delta);
child->SetLocation(DiscretePoint(mLocation.GetX(), mLocation.GetY() + delta*idx));
child->SetLocation(DiscretePoint(mLocation.GetX(), mLocation.GetY() + offset));
child->OnPaintEvent(event);
auto layers = child->GetLayers();
mLayers.insert(mLayers.end(), layers.begin(), layers.end());
offset += delta;
}
}