/*
 * Copyright 2014 © Samsung Research America, Silicon Valley
 *
 * Use of this source code is governed by the 3-Clause BSD license
 * specified in the COPYING file included with this source code.
 */
#include <config.h>

#include <stdlib.h>
#include <cairo.h>

#include "caskbench.h"
#include "caskbench_context.h"
#include "cairo-shapes.h"
#include <math.h>

int
ca_setup_linear_gradient(caskbench_context_t *ctx)
{
    return 1;
}

void
ca_teardown_linear_gradient(void)
{
}

int
ca_test_linear_gradient(caskbench_context_t *ctx)
{
    int w = ctx->canvas_width;
    int h = ctx->canvas_height;

    int stops = 2;
    double x1,y1 ,x2,y2;
    x1 = y1 = 0;
    x2 = y2 = 100;

    cairo_t *cr = ctx->cairo_cr;
    cairo_pattern_t *pattern = cairo_pattern_create_linear (0,0,100,100);

    for (int i = 1; i <= stops; i++) {
        double red, green, blue, alpha;
        generate_random_color(red,green,blue,alpha);
        cairo_pattern_add_color_stop_rgba (pattern, i/(stops), red, green, blue, alpha);
    }

    shapes_t shape;
    shape_copy(&ctx->shape_defaults, &shape);
    for (int i=0; i<ctx->size; i++) {
        double x1 = (double)rnd()/RAND_MAX * w;
        double x2 = (double)rnd()/RAND_MAX * w;
        double y1 = (double)rnd()/RAND_MAX * h;
        double y2 = (double)rnd()/RAND_MAX * h;
        double x = MIN(x1, x2);
        double y = MIN(y1, y2);

        double width_ratio = float(fabs(x2 - x1)) / float(100);
        double height_ratio = float(fabs(y2 - y1)) / float(100);

        cairo_save(cr);
        cairo_translate(cr, x, y);

        cairo_scale(cr, width_ratio, height_ratio);
        // transform(shape.width/100, 0, 0, shape.height/100, 0, 0)
        shape.x = 0;
        shape.y = 0;
        shape.width = 100;
        shape.height = 100;
        shape.fill_type = CB_FILL_LINEAR_GRADIENT;

        cairo_set_source (cr, pattern);
        cairoDrawRectangle(ctx, &shape);

        cairo_fill (cr);
        cairo_restore(cr);
    }
    cairo_pattern_destroy(pattern);
    return 1;
}

/*
  Local Variables:
  mode:c++
  c-file-style:"stroustrup"
  c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
  indent-tabs-mode:nil
  fill-column:99
  End:
*/
// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:fileencoding=utf-8:textwidth=99 :