/*
 * Copyright 2006, Haiku.
 * Distributed under the terms of the MIT License.
 *
 * Authors:
 *              Stephan Aßmus <superstippi@gmx.de>
 */

#include "IconView.h"

#include <Bitmap.h>

#include "ui_defines.h"

#include "IconRenderer.h"

// constructor
IconView::IconView(BRect frame, const char* name)
        : BView(frame, name, B_FOLLOW_LEFT | B_FOLLOW_TOP, B_WILL_DRAW),
          fBitmap(new BBitmap(frame.OffsetToCopy(B_ORIGIN), 0, B_RGB32)),
          fIcon(NULL),
          fRenderer(new IconRenderer(fBitmap)),
          fDirtyIconArea(fBitmap->Bounds()),

          fScale((frame.Width() + 1.0) / 64.0)
{
        fRenderer->SetScale(fScale);
#if __HAIKU__
        BSize size(frame.Width(), frame.Height());
        SetExplicitMinSize(size);
        SetExplicitMaxSize(size);
#endif
}

// destructor
IconView::~IconView()
{
        SetIcon(NULL);
        delete fRenderer;
        delete fBitmap;
}

// #pragma mark -

// AttachedToWindow
void
IconView::AttachedToWindow()
{
        SetViewColor(B_TRANSPARENT_COLOR);

        rgb_color lc = LowColor();
        fRenderer->SetBackground(agg::rgba8(lc.red, lc.green, lc.blue, 255));
}

// Draw
void
IconView::Draw(BRect updateRect)
{
        if (fDirtyIconArea.IsValid()) {
                fRenderer->Render(fDirtyIconArea, false);
                fDirtyIconArea.Set(LONG_MAX, LONG_MAX, LONG_MIN, LONG_MIN);
        }

        // icon
        DrawBitmap(fBitmap, B_ORIGIN);
}

// #pragma mark -

// AreaInvalidated
void
IconView::AreaInvalidated(const BRect& area)
{
        BRect scaledArea(area);
        scaledArea.left *= fScale;
        scaledArea.top *= fScale;
        scaledArea.right *= fScale;
        scaledArea.bottom *= fScale;

        if (fDirtyIconArea.Contains(scaledArea))
                return;

        fDirtyIconArea = fDirtyIconArea | scaledArea;

        Invalidate(scaledArea);
}


// #pragma mark -

// SetIcon
void
IconView::SetIcon(Icon* icon)
{
        if (fIcon == icon)
                return;

        if (fIcon)
                fIcon->RemoveListener(this);

        fIcon = icon;
        fRenderer->SetIcon(icon);

        if (fIcon)
                fIcon->AddListener(this);
}

// SetIconBGColor
void
IconView::SetIconBGColor(const rgb_color& color)
{
        SetLowColor(color);

        fRenderer->SetBackground(
                agg::rgba8(color.red, color.green, color.blue, 255));

        fDirtyIconArea = fBitmap->Bounds();
        Invalidate();
}