/*
 * Copyright 2009, Ingo Weinhold, ingo_weinhold@gmx.de.
 * Distributed under the terms of the MIT License.
 */

#include "chart/StringChartLegend.h"

#include <Font.h>
#include <View.h>


// #pragma mark - StringChartLegend


StringChartLegend::StringChartLegend(const char* string, int32 level)
        :
        ChartLegend(level),
        fString(string)
{
}


// #pragma mark - StringChartLegendRenderer


StringChartLegendRenderer::StringChartLegendRenderer()
        :
        fFont(*be_plain_font)
{
        _Init();
}


StringChartLegendRenderer::StringChartLegendRenderer(const BFont& font)
        :
        fFont(font)
{
        _Init();
}


void
StringChartLegendRenderer::GetMinimumLegendSpacing(BView* view,
        float* horizontal, float* vertical)
{
        *horizontal = 2 * fEmWidth;
        *vertical = fFontHeight / 2;
}


BSize
StringChartLegendRenderer::LegendSize(ChartLegend* _legend, BView* view)
{
        StringChartLegend* legend = dynamic_cast<StringChartLegend*>(_legend);
        if (legend == NULL)
                return BSize();

        float width = ceilf(fFont.StringWidth(legend->String()));
        return BSize(width, fFontHeight);
}


void
StringChartLegendRenderer::RenderLegend(ChartLegend* _legend, BView* view,
        BPoint point)
{
        StringChartLegend* legend = dynamic_cast<StringChartLegend*>(_legend);
        if (legend == NULL)
                return;

        point.y += ceil(fFontAscent);

        view->SetFont(&fFont);
        view->SetHighColor(rgb_color().set_to(0, 0, 0, 255));
        view->DrawString(legend->String(), point);
}


void
StringChartLegendRenderer::_Init()
{
        font_height fh;
        fFont.GetHeight(&fh);
        fFontAscent = ceilf(fh.ascent);
        fFontHeight = fFontAscent + ceilf(fh.descent);
        fEmWidth = ceilf(fFont.StringWidth("m", 1));
}