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///////////////////////////////////////////////////////////////////////////////
// Name: tests/graphics/ellipsization.cpp
// Purpose: wxControlBase::*Ellipsize* unit test
// Author: Francesco Montorsi
// Created: 2010-03-10
// Copyright: (c) 2010 Francesco Montorsi
///////////////////////////////////////////////////////////////////////////////
// ----------------------------------------------------------------------------
// headers
// ----------------------------------------------------------------------------
#include "testprec.h"
#include "wx/control.h"
#include "wx/dcmemory.h"
// ----------------------------------------------------------------------------
// test class
// ----------------------------------------------------------------------------
TEST_CASE("Ellipsization::NormalCase", "[ellipsization]")
{
wxMemoryDC dc;
static const char *stringsToTest[] =
{
"N",
".",
"x",
"foobar",
"\xCE\xB1", // U03B1 (GREEK SMALL LETTER ALPHA)
"Another test",
"a very very very very very very very long string",
// alpha+beta+gamma+delta+epsilon+zeta+eta+theta+iota
"\xCE\xB1\xCE\xB2\xCE\xB3\xCE\xB4\xCE\xB5\xCE\xB6\xCE\xB7\xCE\xB8\xCE\xB9",
"\t", "\t\t\t\t\t", "a\tstring\twith\ttabs",
"\n", "\n\n\n\n\n", "a\nstring\nwith\nnewlines",
"&", "&&&&&&&", "a&string&with&newlines",
"\t\n&", "a\t\n&string\t\n&with\t\n&many\t\n&chars"
};
static const int flagsToTest[] =
{
0,
wxELLIPSIZE_FLAGS_PROCESS_MNEMONICS,
wxELLIPSIZE_FLAGS_EXPAND_TABS,
wxELLIPSIZE_FLAGS_PROCESS_MNEMONICS | wxELLIPSIZE_FLAGS_EXPAND_TABS
};
static const wxEllipsizeMode modesToTest[] =
{
wxELLIPSIZE_START,
wxELLIPSIZE_MIDDLE,
wxELLIPSIZE_END
};
const int charWidth = dc.GetCharWidth();
int widthsToTest[] = { 6*charWidth, 10*charWidth, 15*charWidth };
for ( unsigned int s = 0; s < WXSIZEOF(stringsToTest); s++ )
{
const wxString str = wxString::FromUTF8(stringsToTest[s]);
for ( unsigned int f = 0; f < WXSIZEOF(flagsToTest); f++ )
{
for ( unsigned int m = 0; m < WXSIZEOF(modesToTest); m++ )
{
for ( unsigned int w = 0; w < WXSIZEOF(widthsToTest); w++ )
{
wxString ret = wxControl::Ellipsize
(
str,
dc,
modesToTest[m],
widthsToTest[w],
flagsToTest[f]
);
// Note that we must measure the width of the text that
// will be rendered, and when mnemonics are used, this
// means we have to remove them first.
const wxString
displayed = flagsToTest[f] & wxELLIPSIZE_FLAGS_PROCESS_MNEMONICS
? wxControl::RemoveMnemonics(ret)
: ret;
const int
width = dc.GetMultiLineTextExtent(displayed).GetWidth();
WX_ASSERT_MESSAGE
(
(
"Test #(%u,%u.%u): %s\n\"%s\" -> \"%s\"; width=%dpx > %dpx",
s, f, m,
dc.GetFont().GetNativeFontInfoUserDesc(),
str,
ret,
width,
widthsToTest[w]
),
width <= widthsToTest[w]
);
}
}
}
}
}
TEST_CASE("Ellipsization::EnoughSpace", "[ellipsization]")
{
// No ellipsization should occur if there's plenty of space.
wxMemoryDC dc;
wxString testString("some label");
const int width = dc.GetTextExtent(testString).GetWidth() + 50;
CHECK( wxControl::Ellipsize(testString, dc, wxELLIPSIZE_START, width) == testString );
CHECK( wxControl::Ellipsize(testString, dc, wxELLIPSIZE_MIDDLE, width) == testString );
CHECK( wxControl::Ellipsize(testString, dc, wxELLIPSIZE_END, width) == testString );
}
TEST_CASE("Ellipsization::VeryLittleSpace", "[ellipsization]")
{
// If there's not enough space, the shortened label should still contain "..." and one character
wxMemoryDC dc;
const int width = dc.GetTextExtent("s...").GetWidth();
CHECK( wxControl::Ellipsize("some label", dc, wxELLIPSIZE_START, width) == "...l" );
CHECK( wxControl::Ellipsize("some label", dc, wxELLIPSIZE_MIDDLE, width) == "s..." );
CHECK( wxControl::Ellipsize("some label1", dc, wxELLIPSIZE_MIDDLE, width) == "s..." );
CHECK( wxControl::Ellipsize("some label", dc, wxELLIPSIZE_END, width) == "s..." );
}
TEST_CASE("Ellipsization::HasThreeDots", "[ellipsization]")
{
wxMemoryDC dc;
wxString testString("some longer text");
const int width = dc.GetTextExtent(testString).GetWidth() - 5;
CHECK( wxControl::Ellipsize(testString, dc, wxELLIPSIZE_START, width).StartsWith("...") );
CHECK( !wxControl::Ellipsize(testString, dc, wxELLIPSIZE_START, width).EndsWith("...") );
CHECK( wxControl::Ellipsize(testString, dc, wxELLIPSIZE_END, width).EndsWith("...") );
CHECK( wxControl::Ellipsize(testString, dc, wxELLIPSIZE_MIDDLE, width).Contains("...") );
CHECK( !wxControl::Ellipsize(testString, dc, wxELLIPSIZE_MIDDLE, width).StartsWith("...") );
CHECK( !wxControl::Ellipsize(testString, dc, wxELLIPSIZE_MIDDLE, width).EndsWith("...") );
}
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