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wxWidgets/tests/sizers/boxsizer.cpp
Vadim Zeitlin f27d62bf2f Modify wxBoxSizer minimal size calculations to respect the proportions. 
Make wxBoxSizer minimal size big enough to not only give each item enough
space to satisfy its minimal size but also to respect the proportions among
the items by default.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@64382 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
2010-05-22 14:57:34 +00:00

304 lines
9.8 KiB
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///////////////////////////////////////////////////////////////////////////////
// Name: tests/sizers/boxsizer.cpp
// Purpose: Unit tests for wxBoxSizer
// Author: Vadim Zeitlin
// Created: 2010-03-06
// RCS-ID: $Id$
// Copyright: (c) 2010 Vadim Zeitlin <vadim@wxwidgets.org>
///////////////////////////////////////////////////////////////////////////////
// ----------------------------------------------------------------------------
// headers
// ----------------------------------------------------------------------------
#include "testprec.h"
#ifdef __BORLANDC__
#pragma hdrstop
#endif
#ifndef WX_PRECOMP
#include "wx/app.h"
#include "wx/sizer.h"
#endif // WX_PRECOMP
inline std::ostream& operator<<(std::ostream& o, const wxSize& s)
{
return o << s.x << 'x' << s.y;
}
// ----------------------------------------------------------------------------
// test class
// ----------------------------------------------------------------------------
class BoxSizerTestCase : public CppUnit::TestCase
{
public:
BoxSizerTestCase() { }
virtual void setUp();
virtual void tearDown();
private:
CPPUNIT_TEST_SUITE( BoxSizerTestCase );
CPPUNIT_TEST( Size1 );
CPPUNIT_TEST( Size3 );
CPPUNIT_TEST( CalcMin );
CPPUNIT_TEST_SUITE_END();
void Size1();
void Size3();
void CalcMin();
wxWindow *m_win;
wxSizer *m_sizer;
DECLARE_NO_COPY_CLASS(BoxSizerTestCase)
};
// register in the unnamed registry so that these tests are run by default
CPPUNIT_TEST_SUITE_REGISTRATION( BoxSizerTestCase );
// also include in it's own registry so that these tests can be run alone
CPPUNIT_TEST_SUITE_NAMED_REGISTRATION( BoxSizerTestCase, "BoxSizerTestCase" );
// ----------------------------------------------------------------------------
// test initialization
// ----------------------------------------------------------------------------
void BoxSizerTestCase::setUp()
{
m_win = new wxWindow(wxTheApp->GetTopWindow(), wxID_ANY);
m_win->SetClientSize(127, 35);
m_sizer = new wxBoxSizer(wxHORIZONTAL);
m_win->SetSizer(m_sizer);
}
void BoxSizerTestCase::tearDown()
{
delete m_win;
m_win = NULL;
m_sizer = NULL;
}
// ----------------------------------------------------------------------------
// tests themselves
// ----------------------------------------------------------------------------
void BoxSizerTestCase::Size1()
{
const wxSize sizeTotal = m_win->GetClientSize();
const wxSize sizeChild = sizeTotal / 2;
wxWindow * const
child = new wxWindow(m_win, wxID_ANY, wxDefaultPosition, sizeChild);
m_sizer->Add(child);
m_win->Layout();
CPPUNIT_ASSERT_EQUAL( sizeChild, child->GetSize() );
m_sizer->Clear();
m_sizer->Add(child, wxSizerFlags(1));
m_win->Layout();
CPPUNIT_ASSERT_EQUAL( wxSize(sizeTotal.x, sizeChild.y), child->GetSize() );
m_sizer->Clear();
m_sizer->Add(child, wxSizerFlags(1).Expand());
m_win->Layout();
CPPUNIT_ASSERT_EQUAL( sizeTotal, child->GetSize() );
m_sizer->Clear();
m_sizer->Add(child, wxSizerFlags());
m_sizer->SetItemMinSize(child, sizeTotal*2);
m_win->Layout();
CPPUNIT_ASSERT_EQUAL( sizeTotal, child->GetSize() );
m_sizer->Clear();
m_sizer->Add(child, wxSizerFlags().Expand());
m_sizer->SetItemMinSize(child, sizeTotal*2);
m_win->Layout();
CPPUNIT_ASSERT_EQUAL( sizeTotal, child->GetSize() );
}
void BoxSizerTestCase::Size3()
{
// check that various combinations of minimal sizes and proportions work as
// expected for different window sizes
static const struct LayoutTestData
{
// proportions of the elements
int prop[3];
// minimal sizes of the elements in the sizer direction
int minsize[3];
// total size and the expected sizes of the elements
int x,
sizes[3];
// if true, don't try the permutations of our test data
bool dontPermute;
// Add the given window to the sizer with the corresponding parameters
void AddToSizer(wxSizer *sizer, wxWindow *win, int n) const
{
sizer->Add(win, wxSizerFlags(prop[n]));
sizer->SetItemMinSize(win, wxSize(minsize[n], -1));
}
} layoutTestData[] =
{
// some really simple cases (no need to permute those, they're
// symmetrical anyhow)
{ { 1, 1, 1, }, { 50, 50, 50, }, 150, { 50, 50, 50, }, true },
{ { 2, 2, 2, }, { 50, 50, 50, }, 600, { 200, 200, 200, }, true },
// items with different proportions and min sizes when there is enough
// space to lay them out
{ { 1, 2, 3, }, { 0, 0, 0, }, 600, { 100, 200, 300, } },
{ { 1, 2, 3, }, { 100, 100, 100, }, 600, { 100, 200, 300, } },
{ { 1, 2, 3, }, { 100, 50, 50, }, 600, { 100, 200, 300, } },
{ { 0, 1, 1, }, { 200, 100, 100, }, 600, { 200, 200, 200, } },
{ { 0, 1, 2, }, { 300, 100, 100, }, 600, { 300, 100, 200, } },
{ { 0, 1, 1, }, { 100, 50, 50, }, 300, { 100, 100, 100, } },
{ { 0, 1, 2, }, { 100, 50, 50, }, 400, { 100, 100, 200, } },
// cases when there is not enough space to lay out the items correctly
// while still respecting their min sizes
{ { 0, 1, 1, }, { 100, 150, 50, }, 300, { 100, 150, 50, } },
{ { 1, 2, 3, }, { 100, 100, 100, }, 300, { 100, 100, 100, } },
{ { 1, 2, 3, }, { 100, 50, 50, }, 300, { 100, 80, 120, } },
{ { 1, 2, 3, }, { 100, 10, 10, }, 150, { 100, 20, 30, } },
// cases when there is not enough space even for the min sizes (don't
// permute in these cases as the layout does depend on the item order
// because the first ones have priority)
{ { 1, 2, 3, }, { 100, 50, 50, }, 150, { 100, 50, 0, }, true },
{ { 1, 2, 3, }, { 100, 100, 100, }, 200, { 100, 100, 0, }, true },
{ { 1, 2, 3, }, { 100, 100, 100, }, 150, { 100, 50, 0, }, true },
{ { 1, 2, 3, }, { 100, 100, 100, }, 50, { 50, 0, 0, }, true },
{ { 1, 2, 3, }, { 100, 100, 100, }, 0, { 0, 0, 0, }, true },
};
wxWindow *child[3];
child[0] = new wxWindow(m_win, wxID_ANY);
child[1] = new wxWindow(m_win, wxID_ANY);
child[2] = new wxWindow(m_win, wxID_ANY);
for ( unsigned i = 0; i < WXSIZEOF(layoutTestData); i++ )
{
LayoutTestData ltd = layoutTestData[i];
// the results shouldn't depend on the order of items except in the
// case when there is not enough space for even the fixed width items
// (in which case the first ones might get enough of it but not the
// last ones) so test a couple of permutations of test data unless
// specifically disabled for this test case
for ( unsigned p = 0; p < 3; p++)
{
switch ( p )
{
case 0:
// nothing to do, use original data
break;
case 1:
// exchange first and last elements
wxSwap(ltd.prop[0], ltd.prop[2]);
wxSwap(ltd.minsize[0], ltd.minsize[2]);
wxSwap(ltd.sizes[0], ltd.sizes[2]);
break;
case 2:
// exchange the original third and second elements
wxSwap(ltd.prop[0], ltd.prop[1]);
wxSwap(ltd.minsize[0], ltd.minsize[1]);
wxSwap(ltd.sizes[0], ltd.sizes[1]);
break;
}
m_sizer->Clear();
unsigned j;
for ( j = 0; j < WXSIZEOF(child); j++ )
ltd.AddToSizer(m_sizer, child[j], j);
m_win->SetClientSize(ltd.x, -1);
m_win->Layout();
for ( j = 0; j < WXSIZEOF(child); j++ )
{
WX_ASSERT_EQUAL_MESSAGE
(
(
"test %lu, permutation #%d: wrong size for child #%d "
"for total size %d",
static_cast<unsigned long>(i),
static_cast<unsigned long>(p),
j,
ltd.x
),
ltd.sizes[j], child[j]->GetSize().x
);
}
// don't try other permutations if explicitly disabled
if ( ltd.dontPermute )
break;
}
}
}
void BoxSizerTestCase::CalcMin()
{
static const unsigned NUM_TEST_ITEM = 3;
static const struct CalcMinTestData
{
// proportions of the elements, if one of them is -1 it means to not
// use this window at all in this test
int prop[NUM_TEST_ITEM];
// minimal sizes of the elements in the sizer direction
int minsize[NUM_TEST_ITEM];
// the expected minimal sizer size
int total;
} calcMinTestData[] =
{
{ { 1, 1, -1 }, { 30, 50, 0 }, 100 },
{ { 1, 1, 0 }, { 30, 50, 20 }, 120 },
{ { 10, 10, -1 }, { 30, 50, 0 }, 100 },
{ { 1, 2, 2 }, { 50, 50, 80 }, 250 },
{ { 1, 2, 2 }, { 100, 50, 80 }, 500 },
};
unsigned n;
wxWindow *child[NUM_TEST_ITEM];
for ( n = 0; n < NUM_TEST_ITEM; n++ )
child[n] = new wxWindow(m_win, wxID_ANY);
for ( unsigned i = 0; i < WXSIZEOF(calcMinTestData); i++ )
{
m_sizer->Clear();
const CalcMinTestData& cmtd = calcMinTestData[i];
for ( n = 0; n < NUM_TEST_ITEM; n++ )
{
if ( cmtd.prop[n] != -1 )
{
child[n]->SetInitialSize(wxSize(cmtd.minsize[n], -1));
m_sizer->Add(child[n], wxSizerFlags(cmtd.prop[n]));
}
}
WX_ASSERT_EQUAL_MESSAGE
(
("In test #%u", i),
cmtd.total, m_sizer->CalcMin().x
);
}
}
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