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/*
* 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 <stdio.h>
#include <stdlib.h>
#include <cairo.h>
#include <math.h>
#include "caskbench.h"
#include "caskbench_context.h"
#include "cairo-shapes.h"
#include "kinetics.h"
static double line_width;
static double shadow_x_blur;
static double shadow_y_blur;
static double spread_line_width;
static double spread_x_blur;
static double spread_y_blur;
static double drop_x_blur;
static double drop_y_blur;
static double drop_x_offset;
static double drop_y_offset;
static double drop_line_width;
static double x_offset;
static double y_offset;
static kinetics_t *particles;
#ifdef USE_CAIROGLES
static void particle_init ()
{
line_width = 20.0;
/* Inset shadow */
shadow_x_blur = 5;
shadow_y_blur = 2;
x_offset = 6;
y_offset = 1;
/* Spread */
spread_x_blur = 5;
spread_y_blur = 2;
spread_line_width = 3;
/* Drop shadow */
drop_x_blur = 10;
drop_y_blur = 8;
drop_x_offset = -30;
drop_y_offset = -5;
drop_line_width = line_width;
}
static void fill_particle (caskbench_context_t *ctx, shapes_t *shape)
{
cairo_t *cr = ctx->cairo_cr;
/* Drop shadow */
cairo_set_shadow (cr, CAIRO_SHADOW_DROP);
cairo_set_draw_shadow_only (cr, 1);
cairo_set_shadow_rgba (cr, 0, 0, 0, 0.5);
cairo_set_shadow_offset (cr, drop_x_offset,
drop_y_offset);
cairo_set_shadow_blur (cr, drop_x_blur,
drop_y_blur);
cairoDrawCircle (ctx, shape);
cairo_set_line_width (cr, drop_line_width);
cairo_stroke (cr);
/* Ring */
cairoRandomizeColor (ctx);
cairo_set_shadow (cr, CAIRO_SHADOW_INSET);
cairo_set_draw_shadow_only (cr, 0);
// cairo_set_shadow_rgba (cr, 0, 0, 0, 1); /* Disable shadow masking to make output similar to skia */
cairo_set_shadow_offset (cr, x_offset,
y_offset);
cairo_set_shadow_blur (cr, shadow_x_blur,
shadow_y_blur);
cairoDrawCircle (ctx,shape);
cairo_set_line_width (cr, line_width);
cairo_stroke (cr);
/* Spread */
cairo_set_shadow (cr, CAIRO_SHADOW_DROP);
cairo_set_draw_shadow_only (cr, 1);
cairo_set_shadow_rgba (cr, 1, 1, 1, 1);
cairo_set_shadow_offset (cr, x_offset,
y_offset);
cairo_set_shadow_blur (cr, spread_x_blur,
spread_y_blur);
cairoDrawCircle (ctx,shape);
cairo_set_line_width (cr, spread_line_width);
cairo_stroke (cr);
}
#endif
int
ca_setup_shadow(caskbench_context_t *ctx)
{
#ifndef USE_CAIROGLES
return 0;
#else
if (ctx->size < 0)
return 0;
// Animation & Shadow setup
particles = (kinetics_t *) malloc (sizeof (kinetics_t) * ctx->size);
for (int i = 0; i < ctx->size; i++)
kinetics_init(&particles[i], ctx);
particle_init ();
return 1;
#endif
}
void
ca_teardown_shadow(void)
{
#ifndef USE_CAIROGLES
return;
#else
free(particles);
#endif
}
int
ca_test_shadow(caskbench_context_t *ctx)
{
#ifndef USE_CAIROGLES
return 0;
#else
cairo_set_source_rgb (ctx->cairo_cr, 1, 1, 1);
cairo_rectangle (ctx->cairo_cr, 0, 0, ctx->canvas_width ,ctx->canvas_height);
cairo_fill (ctx->cairo_cr);
for (int i = 0; i < ctx->size; i++) {
shapes_t shape;
kinetics_t *particle = &particles[i];
kinetics_update(particle, 0.1);
shape_copy(&ctx->shape_defaults, &shape);
shape.width = particle->width;
shape.height = particle->height;
shape.x = particle->x;
shape.y = particle->y;
if (!shape.radius)
shape.radius = 40;
cairo_shadow_enable_cache (ctx->cairo_cr, 1);
fill_particle (ctx, &shape);
}
return 1;
#endif
}
/*
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 :
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