#include "logvisor/logvisor.hpp"
#include "specter/Toolbar.hpp"
#include "specter/ViewResources.hpp"
#include "specter/RootView.hpp"

#define TOOLBAR_PADDING 10

namespace specter
{
static logvisor::Module Log("specter::Space");

static const zeus::RGBA32 Tex[] =
{
    {{255,255,255,64}},
    {{255,255,255,64}},
    {{0,0,0,64}},
    {{0,0,0,64}}
};

void Toolbar::Resources::init(boo::IGraphicsDataFactory::Context& ctx, const IThemeData& theme)
{
    m_shadingTex = ctx.newStaticTexture(4, 1, 1, boo::TextureFormat::RGBA8, Tex, 16);
}

Toolbar::Toolbar(ViewResources& res, View& parentView, Position tbPos, unsigned units)
: View(res, parentView), m_tbPos(tbPos), m_units(units),
  m_nomGauge(res.pixelFactor() * SPECTER_TOOLBAR_GAUGE * units),
  m_padding(res.pixelFactor() * TOOLBAR_PADDING)
{
    m_children.reserve(units);
    for (unsigned u=0 ; u<units ; ++u)
        m_children.emplace_back();
    commitResources(res, [&](boo::IGraphicsDataFactory::Context& ctx) -> bool
    {
        buildResources(ctx, res);
        m_tbBlockBuf = ctx.newDynamicBuffer(boo::BufferUse::Uniform, sizeof(ViewBlock), 1);
        m_vertsBinding.initTex(ctx, res, 10, m_tbBlockBuf, res.m_toolbarRes.m_shadingTex);
        return true;
    });
    setBackground(res.themeData().toolbarBackground());
}

void Toolbar::mouseDown(const boo::SWindowCoord& coord, boo::EMouseButton button, boo::EModifierKey mod)
{
    for (std::vector<ViewChild<View*>>& u : m_children)
        for (ViewChild<View*>& c : u)
            c.mouseDown(coord, button, mod);
}

void Toolbar::mouseUp(const boo::SWindowCoord& coord, boo::EMouseButton button, boo::EModifierKey mod)
{
    for (std::vector<ViewChild<View*>>& u : m_children)
        for (ViewChild<View*>& c : u)
            c.mouseUp(coord, button, mod);
}

void Toolbar::mouseMove(const boo::SWindowCoord& coord)
{
    for (std::vector<ViewChild<View*>>& u : m_children)
        for (ViewChild<View*>& c : u)
            c.mouseMove(coord);
}

void Toolbar::mouseEnter(const boo::SWindowCoord& coord)
{
    for (std::vector<ViewChild<View*>>& u : m_children)
        for (ViewChild<View*>& c : u)
            c.mouseEnter(coord);
}

void Toolbar::mouseLeave(const boo::SWindowCoord& coord)
{
    for (std::vector<ViewChild<View*>>& u : m_children)
        for (ViewChild<View*>& c : u)
            c.mouseLeave(coord);
}

void Toolbar::setHorizontalVerts(int width)
{
    m_tbVerts[0].m_pos.assign(0, 1 + m_nomGauge, 0);
    m_tbVerts[0].m_uv.assign(0, 0);
    m_tbVerts[1].m_pos.assign(0, -1 + m_nomGauge, 0);
    m_tbVerts[1].m_uv.assign(0.5, 0);
    m_tbVerts[2].m_pos.assign(width, 1 + m_nomGauge, 0);
    m_tbVerts[2].m_uv.assign(0, 0);
    m_tbVerts[3].m_pos.assign(width, -1 + m_nomGauge, 0);
    m_tbVerts[3].m_uv.assign(0.5, 0);
    m_tbVerts[4].m_pos.assign(width, -1 + m_nomGauge, 0);
    m_tbVerts[4].m_uv.assign(0.5, 0);

    m_tbVerts[5].m_pos.assign(0, 1, 0);
    m_tbVerts[5].m_uv.assign(0.5, 0);
    m_tbVerts[6].m_pos.assign(0, 1, 0);
    m_tbVerts[6].m_uv.assign(0.5, 0);
    m_tbVerts[7].m_pos.assign(0, -1, 0);
    m_tbVerts[7].m_uv.assign(1, 0);
    m_tbVerts[8].m_pos.assign(width, 1, 0);
    m_tbVerts[8].m_uv.assign(0.5, 0);
    m_tbVerts[9].m_pos.assign(width, -1, 0);
    m_tbVerts[9].m_uv.assign(1, 0);
}

void Toolbar::setVerticalVerts(int height)
{
    m_tbVerts[0].m_pos.assign(-1, height, 0);
    m_tbVerts[0].m_uv.assign(0, 0);
    m_tbVerts[1].m_pos.assign(-1, 0, 0);
    m_tbVerts[1].m_uv.assign(0, 0);
    m_tbVerts[2].m_pos.assign(1, height, 0);
    m_tbVerts[2].m_uv.assign(0.5, 0);
    m_tbVerts[3].m_pos.assign(1, 0, 0);
    m_tbVerts[3].m_uv.assign(0.5, 0);
    m_tbVerts[4].m_pos.assign(1, 0, 0);
    m_tbVerts[4].m_uv.assign(0.5, 0);

    m_tbVerts[5].m_pos.assign(-1 + m_nomGauge, height, 0);
    m_tbVerts[5].m_uv.assign(0.5, 0);
    m_tbVerts[6].m_pos.assign(-1 + m_nomGauge, height, 0);
    m_tbVerts[6].m_uv.assign(0.5, 0);
    m_tbVerts[7].m_pos.assign(-1 + m_nomGauge, 0, 0);
    m_tbVerts[7].m_uv.assign(0.5, 0);
    m_tbVerts[8].m_pos.assign(1 + m_nomGauge, height, 0);
    m_tbVerts[8].m_uv.assign(1, 0);
    m_tbVerts[9].m_pos.assign(1 + m_nomGauge, 0, 0);
    m_tbVerts[9].m_uv.assign(1, 0);
}

void Toolbar::push_back(View* v, unsigned unit)
{
    if (unit >= m_units)
        Log.report(logvisor::Fatal, "unit %u out of range %u", unit, m_units);
    std::vector<ViewChild<View*>>& u = m_children[unit];
    u.emplace_back();
    u.back().m_view = v;
}

void Toolbar::resized(const boo::SWindowRect& root, const boo::SWindowRect& sub)
{
    View::resized(root, sub);
    setHorizontalVerts(sub.size[0]);
    m_vertsBinding.load(m_tbVerts, sizeof(m_tbVerts));
    m_tbBlock.setViewRect(root, sub);
    m_tbBlockBuf->load(&m_tbBlock, sizeof(ViewBlock));

    float gaugeUnit = rootView().viewRes().pixelFactor() * SPECTER_TOOLBAR_GAUGE;
    float yOff = 0.0;
    for (std::vector<ViewChild<View*>>& u : m_children)
    {
        boo::SWindowRect childRect = sub;
        boo::SWindowRect containRect = sub;
        containRect.location[0] += m_padding;
        containRect.size[0] -= m_padding * 2;
        containRect.size[1] = gaugeUnit;
        for (ViewChild<View*>& c : u)
        {
            c.m_view->containerResized(root, containRect);
            childRect.size[0] = c.m_view->nominalWidth();
            childRect.size[1] = c.m_view->nominalHeight();
            childRect.location[0] += m_padding;
            childRect.location[1] = sub.location[1] + (gaugeUnit - childRect.size[1]) / 2 - 1 + yOff;
            c.m_view->resized(root, childRect);
            childRect.location[0] += childRect.size[0];

            containRect.location[0] += m_padding + childRect.size[0];
            containRect.size[0] -= m_padding + childRect.size[0];
            containRect.size[1] = gaugeUnit;
        }
        yOff += gaugeUnit;
    }
}

void Toolbar::draw(boo::IGraphicsCommandQueue* gfxQ)
{
    View::draw(gfxQ);
    gfxQ->setShaderDataBinding(m_vertsBinding);
    gfxQ->draw(0, 10);

    for (std::vector<ViewChild<View*>>& u : m_children)
        for (ViewChild<View*>& c : u)
            c.m_view->draw(gfxQ);
}

}