/*
 * Copyright 2005, Stephan Aßmus <superstippi@gmx.de>. All rights reserved.
 * Distributed under the terms of the MIT License.
 *
 * DrawingMode implementing B_OP_OVER on B_RGBA32.
 *
 */

#ifndef DRAWING_MODE_OVER_SOLID_H
#define DRAWING_MODE_OVER_SOLID_H

#include "DrawingModeOver.h"

// blend_pixel_over_solid
void
blend_pixel_over_solid(int x, int y, const color_type& c, uint8 cover,
                                           agg_buffer* buffer, const PatternHandler* pattern)
{
        if (pattern->IsSolidLow())
                return;

        uint8* p = buffer->row_ptr(y) + (x << 2);
        if (cover == 255) {
                ASSIGN_OVER(p, c.r, c.g, c.b);
        } else {
                BLEND_OVER(p, c.r, c.g, c.b, cover);
        }
}

// blend_hline_over_solid
void
blend_hline_over_solid(int x, int y, unsigned len, 
                                           const color_type& c, uint8 cover,
                                           agg_buffer* buffer, const PatternHandler* pattern)
{
        if (pattern->IsSolidLow())
                return;

        if (cover == 255) {
                uint32 v;
                uint8* p8 = (uint8*)&v;
                p8[0] = (uint8)c.b;
                p8[1] = (uint8)c.g;
                p8[2] = (uint8)c.r;
                p8[3] = 255;
                uint32* p32 = (uint32*)(buffer->row_ptr(y)) + x;
                do {
                        *p32 = v;
                        p32++;
                        x++;
                } while(--len);
        } else {
                uint8* p = buffer->row_ptr(y) + (x << 2);
                do {
                        BLEND_OVER(p, c.r, c.g, c.b, cover);
                        x++;
                        p += 4;
                } while(--len);
        }
}

// blend_solid_hspan_over_solid
void
blend_solid_hspan_over_solid(int x, int y, unsigned len, 
                                                         const color_type& c, const uint8* covers,
                                                         agg_buffer* buffer, const PatternHandler* pattern)
{
        if (pattern->IsSolidLow())
                return;

        uint8* p = buffer->row_ptr(y) + (x << 2);
        do {
                if (*covers) {
                        if (*covers == 255) {
                                ASSIGN_OVER(p, c.r, c.g, c.b);
                        } else {
                                BLEND_OVER(p, c.r, c.g, c.b, *covers);
                        }
                }
                covers++;
                p += 4;
                x++;
        } while(--len);
}

// blend_solid_vspan_over_solid
void
blend_solid_vspan_over_solid(int x, int y, unsigned len, 
                                                         const color_type& c, const uint8* covers,
                                                         agg_buffer* buffer, const PatternHandler* pattern)
{
        if (pattern->IsSolidLow())
                return;

        uint8* p = buffer->row_ptr(y) + (x << 2);
        do {
                if (*covers) {
                        if (*covers == 255) {
                                ASSIGN_OVER(p, c.r, c.g, c.b);
                        } else {
                                BLEND_OVER(p, c.r, c.g, c.b, *covers);
                        }
                }
                covers++;
                p += buffer->stride();
                y++;
        } while(--len);
}

#endif // DRAWING_MODE_OVER_H