/*
 * Copyright 2013, Stephan Aßmus <superstippi@gmx.de>.
 * All rights reserved. Distributed under the terms of the MIT License.
 */

#include "TextView.h"


TextView::TextView(const char* name)
        :
        BView(name, B_WILL_DRAW | B_FULL_UPDATE_ON_RESIZE | B_FRAME_EVENTS)
{
        BFont font;
        GetFont(&font);

        ::ParagraphStyle style;
        style.SetLineSpacing(ceilf(font.Size() * 0.2));

        SetParagraphStyle(style);
}


TextView::~TextView()
{
}


void
TextView::Draw(BRect updateRect)
{
        FillRect(updateRect, B_SOLID_LOW);

        fTextLayout.SetWidth(Bounds().Width());
        fTextLayout.Draw(this, B_ORIGIN);
}


void
TextView::AttachedToWindow()
{
        AdoptParentColors();
}


void
TextView::FrameResized(float width, float height)
{
        fTextLayout.SetWidth(width);
}


BSize
TextView::MinSize()
{
        return BSize(50.0f, 0.0f);
}


BSize
TextView::MaxSize()
{
        return BSize(B_SIZE_UNLIMITED, B_SIZE_UNLIMITED);
}


BSize
TextView::PreferredSize()
{
        return BSize(B_SIZE_UNLIMITED, B_SIZE_UNLIMITED);
}


bool
TextView::HasHeightForWidth()
{
        return true;
}


void
TextView::GetHeightForWidth(float width, float* min, float* max,
        float* preferred)
{
        ParagraphLayout layout(fTextLayout);
        layout.SetWidth(width);

        float height = layout.Height() + 1;

        if (min != NULL)
                *min = height;
        if (max != NULL)
                *max = height;
        if (preferred != NULL)
                *preferred = height;
}


void
TextView::SetText(const BString& text)
{
        fText.Clear();

        CharacterStyle regularStyle;
        fText.Append(TextSpan(text, regularStyle));

        fTextLayout.SetParagraph(fText);

        InvalidateLayout();
        Invalidate();
}


void
TextView::SetParagraphStyle(const ::ParagraphStyle& style)
{
        fText.SetStyle(style);
        fTextLayout.SetParagraph(fText);

        InvalidateLayout();
        Invalidate();
}