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// SPDX-License-Identifier: GPL-2.0-or-later
/**
* @file
* Test drawing_pattern_test
*/
/*
* Authors:
* PBS <pbs3141@gmail.com>
*
* Copyright (C) 2022 Authors
*
* Released under GNU GPL v2+, read the file 'COPYING' for more information.
*/
#include <gtest/gtest.h>
#include <cairomm/surface.h>
#include <2geom/int-rect.h>
#include <2geom/int-point.h>
#include "inkscape.h"
#include "document.h"
#include "object/sp-root.h"
#include "display/drawing.h"
#include "display/drawing-surface.h"
#include "display/drawing-context.h"
TEST(DrawingPatternTest, fragments)
{
if (!Inkscape::Application::exists()) {
Inkscape::Application::create(false);
}
auto doc = std::unique_ptr<SPDocument>(SPDocument::createNewDoc(INKSCAPE_TESTS_DIR "/rendering_tests/drawing-pattern-test.svg", false));
ASSERT_TRUE((bool)doc);
ASSERT_TRUE((bool)doc->getRoot());
doc->ensureUpToDate();
class Display
{
public:
Display(SPDocument *doc) {
root = doc->getRoot();
dkey = SPItem::display_key_new(1);
rootitem = root->invoke_show(drawing, dkey, SP_ITEM_SHOW_DISPLAY);
drawing.setRoot(rootitem);
drawing.update();
}
~Display()
{
root->invoke_hide(dkey);
}
auto draw(Geom::IntRect const &rect)
{
auto cs = Cairo::ImageSurface::create(Cairo::FORMAT_ARGB32, rect.width(), rect.height());
auto ds = Inkscape::DrawingSurface(cs->cobj(), rect.min());
auto dc = Inkscape::DrawingContext(ds);
drawing.render(dc, rect);
return cs;
}
private:
Inkscape::Drawing drawing;
SPRoot *root;
Inkscape::DrawingItem *rootitem;
unsigned dkey;
};
auto const tile = Geom::IntPoint(30, 30);
auto const area = Geom::IntRect::from_xywh(0, 0, 100, 100);
auto const reference = Display(doc.get()).draw(area);
uint32_t state = 0;
auto rand = [&] {
state = (state * 1103515245) + 12345;
return state;
};
rand();
auto randrect = [&] {
int w = rand() % tile.x() / 3 + 1;
int h = rand() % tile.y() / 3 + 1;
int x = rand() % (area.width() - w + 1);
int y = rand() % (area.height() - h + 1);
return Geom::IntRect::from_xywh(x, y, w, h);
};
int maxdiff = 0;
auto compare = [&] (Cairo::RefPtr<Cairo::ImageSurface> const &part, Geom::IntPoint const &off) {
for (int y = 0; y < part->get_height(); y++) {
auto p = reference->get_data() + (off.y() + y) * reference->get_stride() + off.x() * 4;
auto q = part->get_data() + y * part->get_stride();
for (int x = 0; x < part->get_width(); x++) {
for (int c = 0; c < 4; c++) {
auto diff = std::abs((int)p[c] - (int)q[c]);
maxdiff = std::max(maxdiff, diff);
}
p += 4;
q += 4;
}
}
};
for (int j = 0; j < 5; j++) {
auto d = Display(doc.get());
for (int i = 0; i < 20; i++) {
auto const rect = randrect();
auto const part = d.draw(rect);
compare(part, rect.min());
}
}
ASSERT_LE(maxdiff, 10);
}
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