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