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#include "canvas/group.h"
#include "canvas/types.h"
#include "canvas/rectangle.h"
#include "canvas/canvas.h"
#include "group.h"
using namespace std;
using namespace ArdourCanvas;
CPPUNIT_TEST_SUITE_REGISTRATION (GroupTest);
/* Do some basic checks on the group's computation of its bounding box */
void
GroupTest::bounding_box ()
{
/* a group with 4 rectangles in it */
ImageCanvas canvas;
Rectangle a (canvas.root(), Rect (0, 0, 32, 32));
a.set_outline_width (0);
Rectangle b (canvas.root(), Rect (0, 33, 32, 64));
b.set_outline_width (0);
Rectangle c (canvas.root(), Rect (33, 0, 64, 32));
c.set_outline_width (0);
Rectangle d (canvas.root(), Rect (33, 33, 64, 64));
d.set_outline_width (0);
boost::optional<Rect> bbox = canvas.root()->bounding_box ();
/* check the bounding box */
CPPUNIT_ASSERT (bbox.is_initialized ());
CPPUNIT_ASSERT (bbox.get().x0 == 0);
CPPUNIT_ASSERT (bbox.get().y0 == 0);
CPPUNIT_ASSERT (bbox.get().x1 == 64);
CPPUNIT_ASSERT (bbox.get().y1 == 64);
/* check that adding an item resets the bbox */
Rectangle e (canvas.root(), Rect (64, 64, 128, 128));
bbox = canvas.root()->bounding_box ();
CPPUNIT_ASSERT (bbox.is_initialized ());
CPPUNIT_ASSERT (bbox.get().x0 == 0);
CPPUNIT_ASSERT (bbox.get().y0 == 0);
CPPUNIT_ASSERT (bbox.get().x1 == 128.25);
CPPUNIT_ASSERT (bbox.get().y1 == 128.25);
}
/* Check that a group containing only items with no bounding box itself has no bounding box */
void
GroupTest::null_bounding_box ()
{
ImageCanvas canvas;
Group empty (canvas.root());
boost::optional<Rect> bbox = empty.bounding_box ();
CPPUNIT_ASSERT (!bbox.is_initialized ());
}
/* Do some basic tests on layering */
void
GroupTest::layers ()
{
/* Set up 4 rectangles; order from the bottom is
a - b - c - d
*/
ImageCanvas canvas;
Rectangle a (canvas.root(), Rect (0, 0, 32, 32));
Rectangle b (canvas.root(), Rect (0, 0, 32, 32));
Rectangle c (canvas.root(), Rect (0, 0, 32, 32));
Rectangle d (canvas.root(), Rect (0, 0, 32, 32));
/* Put a on top and check */
a.raise_to_top ();
list<Item*>::const_iterator i = canvas.root()->items().begin();
CPPUNIT_ASSERT (*i++ == &b);
CPPUNIT_ASSERT (*i++ == &c);
CPPUNIT_ASSERT (*i++ == &d);
CPPUNIT_ASSERT (*i++ == &a);
/* Put a on the bottom and check */
a.lower_to_bottom ();
i = canvas.root()->items().begin();
CPPUNIT_ASSERT (*i++ == &a);
CPPUNIT_ASSERT (*i++ == &b);
CPPUNIT_ASSERT (*i++ == &c);
CPPUNIT_ASSERT (*i++ == &d);
/* Check raise by a number of levels */
a.raise (2);
i = canvas.root()->items().begin();
CPPUNIT_ASSERT (*i++ == &b);
CPPUNIT_ASSERT (*i++ == &c);
CPPUNIT_ASSERT (*i++ == &a);
CPPUNIT_ASSERT (*i++ == &d);
a.raise (4);
i = canvas.root()->items().begin();
CPPUNIT_ASSERT (*i++ == &b);
CPPUNIT_ASSERT (*i++ == &c);
CPPUNIT_ASSERT (*i++ == &d);
CPPUNIT_ASSERT (*i++ == &a);
}
/* Check that groups notice when their children change */
void
GroupTest::children_changing ()
{
ImageCanvas canvas;
/* Put a rectangle in the root group */
Rectangle a (canvas.root(), Rect (0, 0, 32, 32));
a.set_outline_width (0);
/* Check that initial bbox */
boost::optional<Rect> bbox = canvas.root()->bounding_box ();
CPPUNIT_ASSERT (bbox.is_initialized ());
CPPUNIT_ASSERT (bbox.get().x0 == 0);
CPPUNIT_ASSERT (bbox.get().y0 == 0);
CPPUNIT_ASSERT (bbox.get().x1 == 32);
CPPUNIT_ASSERT (bbox.get().y1 == 32);
/* Change the rectangle's size and check the parent */
a.set (Rect (0, 0, 48, 48));
bbox = canvas.root()->bounding_box ();
CPPUNIT_ASSERT (bbox.is_initialized ());
CPPUNIT_ASSERT (bbox.get().x0 == 0);
CPPUNIT_ASSERT (bbox.get().y0 == 0);
CPPUNIT_ASSERT (bbox.get().x1 == 48);
CPPUNIT_ASSERT (bbox.get().y1 == 48);
/* Change the rectangle's line width and check the parent */
a.set_outline_width (1);
bbox = canvas.root()->bounding_box ();
CPPUNIT_ASSERT (bbox.is_initialized ());
CPPUNIT_ASSERT (bbox.get().x0 == -0.5);
CPPUNIT_ASSERT (bbox.get().y0 == -0.5);
CPPUNIT_ASSERT (bbox.get().x1 == 48.5);
CPPUNIT_ASSERT (bbox.get().y1 == 48.5);
}
/* Check that a group notices when its grandchildren change */
void
GroupTest::grandchildren_changing ()
{
ImageCanvas canvas;
/* Put a child group B in the root group */
Group B (canvas.root());
/* Grandchild rectangle */
Rectangle a (&B, Rect (0, 0, 32, 32));
a.set_outline_width (0);
/* Check the initial bboxes */
boost::optional<Rect> bbox = canvas.root()->bounding_box ();
CPPUNIT_ASSERT (bbox.is_initialized ());
CPPUNIT_ASSERT (bbox.get().x0 == 0);
CPPUNIT_ASSERT (bbox.get().y0 == 0);
CPPUNIT_ASSERT (bbox.get().x1 == 32);
CPPUNIT_ASSERT (bbox.get().y1 == 32);
bbox = B.bounding_box ();
CPPUNIT_ASSERT (bbox.is_initialized ());
CPPUNIT_ASSERT (bbox.get().x0 == 0);
CPPUNIT_ASSERT (bbox.get().y0 == 0);
CPPUNIT_ASSERT (bbox.get().x1 == 32);
CPPUNIT_ASSERT (bbox.get().y1 == 32);
/* Change the grandchild and check its parent and grandparent */
a.set (Rect (0, 0, 48, 48));
bbox = canvas.root()->bounding_box ();
CPPUNIT_ASSERT (bbox.is_initialized ());
CPPUNIT_ASSERT (bbox.get().x0 == 0);
CPPUNIT_ASSERT (bbox.get().y0 == 0);
CPPUNIT_ASSERT (bbox.get().x1 == 48);
CPPUNIT_ASSERT (bbox.get().y1 == 48);
bbox = B.bounding_box ();
CPPUNIT_ASSERT (bbox.is_initialized ());
CPPUNIT_ASSERT (bbox.get().x0 == 0);
CPPUNIT_ASSERT (bbox.get().y0 == 0);
CPPUNIT_ASSERT (bbox.get().x1 == 48);
CPPUNIT_ASSERT (bbox.get().y1 == 48);
}
/* Basic tests on the code to find items at a particular point */
void
GroupTest::add_items_at_point ()
{
ImageCanvas canvas;
Group gA (canvas.root());
gA.set_position (Duple (128, 64));
Group gB (&gA);
gB.set_position (Duple (64, 32));
/* two rectangles in the same place, rB on top of rA */
Rectangle rA (&gB);
rA.set_position (Duple (4, 2));
rA.set (Rect (0, 0, 8, 4));
Rectangle rB (&gB);
rB.set_position (Duple (4, 2));
rB.set (Rect (0, 0, 8, 4));
/* rC below those two */
Rectangle rC (&gB);
rC.set_position (Duple (12, 6));
rC.set (Rect (0, 0, 8, 4));
vector<Item const *> items;
canvas.root()->add_items_at_point (Duple (128 + 64 + 4 + 4, 64 + 32 + 2 + 2), items);
CPPUNIT_ASSERT (items.size() == 5);
vector<Item const *>::iterator i = items.begin ();
CPPUNIT_ASSERT (*i++ == canvas.root ());
CPPUNIT_ASSERT (*i++ == &gA);
CPPUNIT_ASSERT (*i++ == &gB);
CPPUNIT_ASSERT (*i++ == &rA);
CPPUNIT_ASSERT (*i++ == &rB);
items.clear ();
canvas.root()->add_items_at_point (Duple (128 + 64 + 12 + 4, 64 + 32 + 6 + 2), items);
CPPUNIT_ASSERT (items.size() == 4);
i = items.begin ();
CPPUNIT_ASSERT (*i++ == canvas.root ());
CPPUNIT_ASSERT (*i++ == &gA);
CPPUNIT_ASSERT (*i++ == &gB);
CPPUNIT_ASSERT (*i++ == &rC);
}
static double
double_random ()
{
return ((double) rand() / RAND_MAX);
}
/* Check the find items at point code more thoroughly */
void
GroupTest::torture_add_items_at_point ()
{
int const n_rectangles = 10000;
int const n_tests = 1000;
double const rough_size = 1000;
srand (1);
ImageCanvas canvas;
list<Item*> rectangles;
for (int i = 0; i < n_rectangles; ++i) {
Rectangle* r = new Rectangle (canvas.root());
double const x = double_random () * rough_size / 2;
double const y = double_random () * rough_size / 2;
double const w = double_random () * rough_size / 2;
double const h = double_random () * rough_size / 2;
r->set (Rect (x, y, x + w, y + h));
rectangles.push_back (r);
}
for (int i = 0; i < n_tests; ++i) {
Duple test (double_random() * rough_size, double_random() * rough_size);
/* ask the group what's at this point */
vector<Item const *> items_A;
canvas.root()->add_items_at_point (test, items_A);
/* work it out ourselves */
vector<Item*> items_B;
if (canvas.root()->bounding_box() && canvas.root()->bounding_box().get().contains (test)) {
items_B.push_back (canvas.root());
}
for (list<Item*>::iterator j = rectangles.begin(); j != rectangles.end(); ++j) {
boost::optional<Rect> bbox = (*j)->bounding_box ();
assert (bbox);
if (bbox.get().contains (test)) {
items_B.push_back (*j);
}
}
CPPUNIT_ASSERT (items_A.size() == items_B.size());
vector<Item const *>::iterator j = items_A.begin ();
vector<Item*>::iterator k = items_B.begin ();
while (j != items_A.end ()) {
CPPUNIT_ASSERT (*j == *k);
++j;
++k;
}
}
}
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