OpenRCT2/src/openrct2/drawing/Rect.cpp

/*****************************************************************************
 * Copyright (c) 2014-2019 OpenRCT2 developers
 *
 * For a complete list of all authors, please refer to contributors.md
 * Interested in contributing? Visit https://github.com/OpenRCT2/OpenRCT2
 *
 * OpenRCT2 is licensed under the GNU General Public License version 3.
 *****************************************************************************/

#include "../common.h"
#include "../interface/Colour.h"
#include "Drawing.h"

/**
 * Draw a rectangle, with optional border or fill
 *
 *  rct2: 0x006E6F81
 * dpi (edi)
 * left (ax)
 * top (cx)
 * right (bx)
 * bottom (dx)
 * colour (ebp)
 * flags (si)
 */
void gfx_fill_rect_inset(
    rct_drawpixelinfo* dpi, int16_t left, int16_t top, int16_t right, int16_t bottom, int32_t colour, uint8_t flags)
{
    if (colour & (COLOUR_FLAG_TRANSLUCENT | COLOUR_FLAG_8))
    {
        translucent_window_palette palette;
        if (colour & COLOUR_FLAG_8)
        {
            // TODO: This can't be added up
            // palette = NOT_TRANSLUCENT(colour);
            assert(false);
            return;
        }
        else
        {
            palette = TranslucentWindowPalettes[BASE_COLOUR(colour)];
        }

        if (flags & INSET_RECT_FLAG_BORDER_NONE)
        {
            gfx_filter_rect(dpi, left, top, right, bottom, palette.base);
        }
        else if (flags & INSET_RECT_FLAG_BORDER_INSET)
        {
            // Draw outline of box
            gfx_filter_rect(dpi, left, top, left, bottom, palette.highlight);
            gfx_filter_rect(dpi, left, top, right, top, palette.highlight);
            gfx_filter_rect(dpi, right, top, right, bottom, palette.shadow);
            gfx_filter_rect(dpi, left, bottom, right, bottom, palette.shadow);

            if (!(flags & INSET_RECT_FLAG_FILL_NONE))
            {
                gfx_filter_rect(dpi, left + 1, top + 1, right - 1, bottom - 1, palette.base);
            }
        }
        else
        {
            // Draw outline of box
            gfx_filter_rect(dpi, left, top, left, bottom, palette.shadow);
            gfx_filter_rect(dpi, left, top, right, top, palette.shadow);
            gfx_filter_rect(dpi, right, top, right, bottom, palette.highlight);
            gfx_filter_rect(dpi, left, bottom, right, bottom, palette.highlight);

            if (!(flags & INSET_RECT_FLAG_FILL_NONE))
            {
                gfx_filter_rect(dpi, left + 1, top + 1, right - 1, bottom - 1, palette.base);
            }
        }
    }
    else
    {
        uint8_t shadow, fill, hilight;
        if (flags & INSET_RECT_FLAG_FILL_MID_LIGHT)
        {
            shadow = ColourMapA[colour].dark;
            fill = ColourMapA[colour].mid_light;
            hilight = ColourMapA[colour].lighter;
        }
        else
        {
            shadow = ColourMapA[colour].mid_dark;
            fill = ColourMapA[colour].light;
            hilight = ColourMapA[colour].lighter;
        }

        if (flags & INSET_RECT_FLAG_BORDER_NONE)
        {
            gfx_fill_rect(dpi, left, top, right, bottom, fill);
        }
        else if (flags & INSET_RECT_FLAG_BORDER_INSET)
        {
            // Draw outline of box
            gfx_fill_rect(dpi, left, top, left, bottom, shadow);
            gfx_fill_rect(dpi, left + 1, top, right, top, shadow);
            gfx_fill_rect(dpi, right, top + 1, right, bottom - 1, hilight);
            gfx_fill_rect(dpi, left + 1, bottom, right, bottom, hilight);

            if (!(flags & INSET_RECT_FLAG_FILL_NONE))
            {
                if (!(flags & INSET_RECT_FLAG_FILL_DONT_LIGHTEN))
                {
                    if (flags & INSET_RECT_FLAG_FILL_GREY)
                    {
                        fill = ColourMapA[COLOUR_BLACK].light;
                    }
                    else
                    {
                        fill = ColourMapA[colour].lighter;
                    }
                }
                gfx_fill_rect(dpi, left + 1, top + 1, right - 1, bottom - 1, fill);
            }
        }
        else
        {
            // Draw outline of box
            gfx_fill_rect(dpi, left, top, left, bottom - 1, hilight);
            gfx_fill_rect(dpi, left + 1, top, right - 1, top, hilight);
            gfx_fill_rect(dpi, right, top, right, bottom - 1, shadow);
            gfx_fill_rect(dpi, left, bottom, right, bottom, shadow);

            if (!(flags & INSET_RECT_FLAG_FILL_NONE))
            {
                if (flags & INSET_RECT_FLAG_FILL_GREY)
                {
                    fill = ColourMapA[COLOUR_BLACK].light;
                }
                gfx_fill_rect(dpi, left + 1, top + 1, right - 1, bottom - 1, fill);
            }
        }
    }
}