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// SPDX-License-Identifier: GPL-2.0-or-later
#include "ui/util.h"
#include "helper/geom.h"
#include "util.h"
namespace Inkscape {
namespace UI {
namespace Widget {
void region_to_path(Cairo::RefPtr<Cairo::Context> const &cr, Cairo::RefPtr<Cairo::Region> const ®)
{
for (int i = 0; i < reg->get_num_rectangles(); i++) {
auto rect = reg->get_rectangle(i);
cr->rectangle(rect.x, rect.y, rect.width, rect.height);
}
}
Cairo::RefPtr<Cairo::Region> shrink_region(Cairo::RefPtr<Cairo::Region> const ®, int d, int t)
{
// Find the bounding rect, expanded by 1 in all directions.
auto rect = geom_to_cairo(expandedBy(cairo_to_geom(reg->get_extents()), 1));
// Take the complement of the region within the rect.
auto reg2 = Cairo::Region::create(rect);
reg2->subtract(reg);
// Increase the width and height of every rectangle by d.
auto reg3 = Cairo::Region::create();
for (int i = 0; i < reg2->get_num_rectangles(); i++) {
auto rect = reg2->get_rectangle(i);
rect.x += t;
rect.y += t;
rect.width += d;
rect.height += d;
reg3->do_union(rect);
}
// Take the complement of the region within the rect.
reg2 = Cairo::Region::create(rect);
reg2->subtract(reg3);
return reg2;
}
std::array<float, 3> checkerboard_darken(std::array<float, 3> const &rgb, float amount)
{
std::array<float, 3> hsl;
SPColor::rgb_to_hsl_floatv(&hsl[0], rgb[0], rgb[1], rgb[2]);
hsl[2] += (hsl[2] < 0.08 ? 0.08 : -0.08) * amount;
std::array<float, 3> rgb2;
SPColor::hsl_to_rgb_floatv(&rgb2[0], hsl[0], hsl[1], hsl[2]);
return rgb2;
}
} // namespace Widget
} // namespace UI
} // namespace Inkscape
/*
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 :
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