cf07dea50d
Verify that it behaves as documented, i.e. uses white if the background brush is not explicitly set.
1035 lines
36 KiB
C++
1035 lines
36 KiB
C++
///////////////////////////////////////////////////////////////////////////////
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// Name: tests/graphics/bitmap.cpp
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// Purpose: wxBitmap unit test
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// Author: Vadim Zeitlin
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// Created: 2010-03-29
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// Copyright: (c) 2010 Vadim Zeitlin <vadim@wxwidgets.org>
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///////////////////////////////////////////////////////////////////////////////
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// ----------------------------------------------------------------------------
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// headers
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// ----------------------------------------------------------------------------
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#include "testprec.h"
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#ifdef wxHAS_RAW_BITMAP
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#ifdef __BORLANDC__
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#pragma hdrstop
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#endif
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#include "wx/bitmap.h"
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#include "wx/rawbmp.h"
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#include "wx/dcmemory.h"
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#if wxUSE_GRAPHICS_CONTEXT
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#include "wx/graphics.h"
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#endif // wxUSE_GRAPHICS_CONTEXT
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#include "testimage.h"
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#define ASSERT_EQUAL_RGB(c, r, g, b) \
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CHECK( (int)r == (int)c.Red() ); \
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CHECK( (int)g == (int)c.Green() ); \
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CHECK( (int)b == (int)c.Blue() )
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#define ASSERT_EQUAL_RGBA(c, r, g, b, a) \
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CHECK( (int)r == (int)c.Red() ); \
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CHECK( (int)g == (int)c.Green() ); \
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CHECK( (int)b == (int)c.Blue() ); \
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CHECK( (int)a == (int)c.Alpha() )
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#ifdef __WXMSW__
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// Support for iteration over 32 bpp 0RGB bitmaps
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typedef wxPixelFormat<unsigned char, 32, 2, 1, 0> wxNative32PixelFormat;
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typedef wxPixelData<wxBitmap, wxNative32PixelFormat> wxNative32PixelData;
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#endif // __WXMSW__
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#ifdef __WXOSX__
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// 32 bpp xRGB bitmaps are native ones
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typedef wxNativePixelData wxNative32PixelData;
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#endif // __WXOSX__
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// ----------------------------------------------------------------------------
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// tests
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// ----------------------------------------------------------------------------
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TEST_CASE("BitmapTestCase::Mask", "[bitmap][mask]")
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{
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wxBitmap bmp(10, 10);
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{
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wxMemoryDC dc(bmp);
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dc.SetBackground(*wxWHITE);
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dc.Clear();
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dc.SetBrush(*wxBLACK_BRUSH);
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dc.DrawRectangle(4, 4, 2, 2);
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dc.SetPen(*wxRED_PEN);
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dc.DrawLine(0, 0, 10, 10);
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dc.DrawLine(10, 0, 0, 10);
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}
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wxMask *mask = new wxMask(bmp, *wxBLACK);
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bmp.SetMask(mask);
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REQUIRE(bmp.GetMask() == mask);
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// copying masks should work
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wxMask *mask2 = NULL;
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REQUIRE_NOTHROW(mask2 = new wxMask(*mask));
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bmp.SetMask(mask2);
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REQUIRE(bmp.GetMask() == mask2);
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}
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TEST_CASE("BitmapTestCase::OverlappingBlit", "[bitmap][blit]")
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{
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wxBitmap bmp(10, 10);
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{
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wxMemoryDC dc(bmp);
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dc.SetBackground(*wxWHITE);
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dc.Clear();
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dc.SetBrush(*wxBLACK_BRUSH);
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dc.DrawRectangle(4, 4, 2, 2);
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dc.SetPen(*wxRED_PEN);
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dc.DrawLine(0, 0, 10, 10);
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dc.DrawLine(10, 0, 0, 10);
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}
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REQUIRE(bmp.GetMask() == NULL);
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// Clear to white.
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{
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wxMemoryDC dc(bmp);
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#if wxUSE_GRAPHICS_CONTEXT
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wxGraphicsContext* gc = dc.GetGraphicsContext();
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if ( gc )
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{
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gc->SetAntialiasMode(wxANTIALIAS_NONE);
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}
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#endif // wxUSE_GRAPHICS_CONTEXT
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dc.SetBackground( *wxWHITE );
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dc.Clear();
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// Draw red line across the top.
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dc.SetPen(*wxRED_PEN);
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dc.DrawLine(0, 0, 10, 0);
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// Scroll down one line.
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dc.Blit( 0, 1, 10, 9, &dc, 0, 0 );
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} // Select the bitmap out of the memory DC before using it directly.
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// Now, lines 0 and 1 should be red, lines 2++ should still be white.
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if ( bmp.GetDepth() == 32 )
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{
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wxAlphaPixelData npd( bmp );
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REQUIRE( npd );
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wxAlphaPixelData::Iterator it( npd );
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ASSERT_EQUAL_RGB( it, 255, 0, 0 );
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it.OffsetY( npd, 1 );
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ASSERT_EQUAL_RGB( it, 255, 0, 0 );
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it.OffsetY( npd, 1 );
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ASSERT_EQUAL_RGB( it, 255, 255, 255 );
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it.OffsetY( npd, 1 );
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ASSERT_EQUAL_RGB( it, 255, 255, 255 );
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}
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else
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{
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wxNativePixelData npd( bmp );
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REQUIRE( npd );
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wxNativePixelData::Iterator it( npd );
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ASSERT_EQUAL_RGB( it, 255, 0, 0 );
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it.OffsetY( npd, 1 );
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ASSERT_EQUAL_RGB( it, 255, 0, 0 );
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it.OffsetY( npd, 1 );
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ASSERT_EQUAL_RGB( it, 255, 255, 255 );
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it.OffsetY( npd, 1 );
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ASSERT_EQUAL_RGB( it, 255, 255, 255 );
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}
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}
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static wxBitmap GetMask(int w, int h)
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{
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wxBitmap bmask(w, h, 1);
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{
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wxMemoryDC dc(bmask);
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#if wxUSE_GRAPHICS_CONTEXT
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wxGraphicsContext* gc = dc.GetGraphicsContext();
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if ( gc )
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{
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gc->SetAntialiasMode(wxANTIALIAS_NONE);
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}
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#endif // wxUSE_GRAPHICS_CONTEXT
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dc.SetBackground(*wxBLACK_BRUSH);
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dc.Clear();
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dc.SetPen(*wxWHITE_PEN);
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dc.SetBrush(*wxWHITE_BRUSH);
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dc.DrawRectangle(0, 0, w, h / 2);
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}
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return bmask;
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}
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TEST_CASE("BitmapTestCase::DrawNonAlphaWithMask", "[bitmap][draw][nonalpha][withmask]")
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{
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const int w = 16;
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const int h = 16;
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// Mask
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wxBitmap bmask = GetMask(w, h);
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const wxColour clrLeft(*wxBLUE);
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const wxColour clrRight(*wxRED);
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const wxColour clrBg(*wxCYAN);
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// Bitmap with mask to be drawn
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wxBitmap bmp(w, h, 24);
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{
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wxMemoryDC dc(bmp);
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dc.SetPen(wxPen(clrLeft));
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dc.SetBrush(wxBrush(clrLeft));
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dc.DrawRectangle(0, 0, w / 2, h);
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dc.SetPen(wxPen(clrRight));
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dc.SetBrush(wxBrush(clrRight));
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dc.DrawRectangle(w / 2, 0, w / 2, h);
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}
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REQUIRE_FALSE(bmp.HasAlpha());
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REQUIRE(bmp.GetMask() == NULL);
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bmp.SetMask(new wxMask(bmask));
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REQUIRE_FALSE(bmp.HasAlpha());
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REQUIRE(bmp.GetMask() != NULL);
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// Drawing the bitmap using mask
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{
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wxBitmap bmpOut(w, h, 24);
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{
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wxMemoryDC dc(bmpOut);
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dc.SetBackground(wxBrush(clrBg));
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dc.Clear();
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dc.DrawBitmap(bmp, wxPoint(0, 0), true);
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}
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// Check pixels
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wxNativePixelData data(bmpOut);
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REQUIRE(data);
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wxNativePixelData::Iterator p(data);
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p.OffsetY(data, h / 4);
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wxNativePixelData::Iterator rowStart = p;
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p.OffsetX(data, w / 4); // drawn area - left side
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ASSERT_EQUAL_RGB(p, clrLeft.Red(), clrLeft.Green(), clrLeft.Blue());
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p.OffsetX(data, w / 2); // drawn area - right side
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ASSERT_EQUAL_RGB(p, clrRight.Red(), clrRight.Green(), clrRight.Blue());
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p = rowStart;
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p.OffsetY(data, h / 2);
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p.OffsetX(data, w / 4); // masked area - left side
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ASSERT_EQUAL_RGB(p, clrBg.Red(), clrBg.Green(), clrBg.Blue());
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p.OffsetX(data, w / 2); // masked area - right side
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ASSERT_EQUAL_RGB(p, clrBg.Red(), clrBg.Green(), clrBg.Blue());
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}
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// Drawing the bitmap not using mask
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{
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wxBitmap bmpOut(w, h, 24);
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{
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wxMemoryDC dc(bmpOut);
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dc.SetBackground(wxBrush(clrBg));
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dc.Clear();
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dc.DrawBitmap(bmp, wxPoint(0, 0), false);
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}
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// Check pixels
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wxNativePixelData data(bmpOut);
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REQUIRE(data);
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wxNativePixelData::Iterator p(data);
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p.OffsetY(data, h / 4);
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wxNativePixelData::Iterator rowStart = p;
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p.OffsetX(data, w / 4); // left upper side
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ASSERT_EQUAL_RGB(p, clrLeft.Red(), clrLeft.Green(), clrLeft.Blue());
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p.OffsetX(data, w / 2); // right upper side
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ASSERT_EQUAL_RGB(p, clrRight.Red(), clrRight.Green(), clrRight.Blue());
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p = rowStart;
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p.OffsetY(data, h / 2);
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p.OffsetX(data, w / 4); // left lower side - same colour as upper
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ASSERT_EQUAL_RGB(p, clrLeft.Red(), clrLeft.Green(), clrLeft.Blue());
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p.OffsetX(data, w / 2); // right lower side - same colour as upper
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ASSERT_EQUAL_RGB(p, clrRight.Red(), clrRight.Green(), clrRight.Blue());
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}
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}
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TEST_CASE("BitmapTestCase::DrawAlpha", "[bitmap][draw][alpha]")
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{
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const int w = 16;
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const int h = 16;
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const wxColour clrFg(*wxCYAN);
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const wxColour clrBg(*wxGREEN);
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const unsigned char alpha = 92;
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#if defined(__WXMSW__) || defined(__WXOSX__)
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// premultiplied values
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const wxColour clrFgAlpha(((clrFg.Red() * alpha) + 127) / 255, ((clrFg.Green() * alpha) + 127) / 255, ((clrFg.Blue() * alpha) + 127) / 255);
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#else
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const wxColour clrFgAlpha(clrFg);
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#endif // __WXMSW__ || __WXOSX__
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// Bitmap to be drawn
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wxBitmap bmp(w, h, 32);
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#if defined(__WXMSW__) || defined(__WXOSX__)
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bmp.UseAlpha();
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#endif // __WXMSW__ || __WXOSX__
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{
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wxAlphaPixelData data(bmp);
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REQUIRE(data);
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wxAlphaPixelData::Iterator p(data);
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for ( int y = 0; y < h; y++)
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{
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wxAlphaPixelData::Iterator rowStart = p;
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for ( int x = 0; x < w; x++, ++p )
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{
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if ( x < w / 2 )
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{ // opaque
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p.Red() = clrFg.Red();
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p.Green() = clrFg.Green();
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p.Blue() = clrFg.Blue();
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p.Alpha() = 255;
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}
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else
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{ // with transparency
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p.Red() = clrFgAlpha.Red();
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p.Green() = clrFgAlpha.Green();
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p.Blue() = clrFgAlpha.Blue();
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p.Alpha() = alpha;
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}
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}
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p = rowStart;
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p.OffsetY(data, 1);
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}
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}
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REQUIRE(bmp.HasAlpha());
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REQUIRE(bmp.GetMask() == NULL);
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// Drawing the bitmap on 24 bpp RGB target
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wxBitmap bmpOut24(w, h, 24);
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REQUIRE_FALSE(bmpOut24.HasAlpha());
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{
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wxMemoryDC dc(bmpOut24);
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dc.SetBackground(wxBrush(clrBg));
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dc.Clear();
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dc.DrawBitmap(bmp, wxPoint(0, 0), true);
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}
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REQUIRE_FALSE(bmpOut24.HasAlpha());
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// Check pixels
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wxNativePixelData data24(bmpOut24);
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REQUIRE(data24);
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wxNativePixelData::Iterator p1(data24);
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p1.OffsetY(data24, h / 2);
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p1.OffsetX(data24, w / 4); // left side is opaque
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ASSERT_EQUAL_RGB(p1, clrFg.Red(), clrFg.Green(), clrFg.Blue());
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p1.OffsetX(data24, w / 2); // right side is with alpha
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#if defined(__WXMSW__) || defined(__WXOSX__)
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// premultiplied values
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ASSERT_EQUAL_RGB(p1, clrFgAlpha.Red() + (clrBg.Red() * (255 - alpha) + 127) / 255,
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clrFgAlpha.Green() + (clrBg.Green() * (255 - alpha) + 127) / 255,
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clrFgAlpha.Blue() + (clrBg.Blue() * (255 - alpha) + 127) / 255);
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#else
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ASSERT_EQUAL_RGB(p1, (clrFg.Red() * alpha + clrBg.Red() * (255 - alpha) + 127) / 255,
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(clrFg.Green() * alpha + clrBg.Green() * (255 - alpha) + 127) / 255,
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(clrFg.Blue() * alpha + clrBg.Blue() * (255 - alpha) + 127) / 255);
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#endif // __WXMSW__ || __WXOSX__
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#if defined(__WXMSW__) || defined(__WXOSX__)
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// Drawing the bitmap on 32 bpp xRGB target
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wxBitmap bmpOut32(w, h, 32);
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REQUIRE_FALSE(bmpOut32.HasAlpha());
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{
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wxMemoryDC dc(bmpOut32);
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dc.SetBackground(wxBrush(clrBg));
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dc.Clear();
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dc.DrawBitmap(bmp, wxPoint(0, 0), true);
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}
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REQUIRE(bmpOut32.GetDepth() == 32);
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REQUIRE_FALSE(bmpOut32.HasAlpha());
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// Check pixels
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wxNative32PixelData data32(bmpOut32);
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REQUIRE(data32);
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wxNative32PixelData::Iterator p2(data32);
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p2.OffsetY(data32, h / 2);
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p2.OffsetX(data32, w / 4); // left side is opaque
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ASSERT_EQUAL_RGB(p2, clrFg.Red(), clrFg.Green(), clrFg.Blue());
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p2.OffsetX(data32, w / 2); // right side is with alpha
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// premultiplied values
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ASSERT_EQUAL_RGB(p2, clrFgAlpha.Red() + (clrBg.Red() * (255 - alpha) + 127) / 255,
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clrFgAlpha.Green() + (clrBg.Green() * (255 - alpha) + 127) / 255,
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clrFgAlpha.Blue() + (clrBg.Blue() * (255 - alpha) + 127) / 255);
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#endif // __WXMSW__ || __WXOSX__
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}
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TEST_CASE("BitmapTestCase::DrawAlphaWithMask", "[bitmap][draw][alpha][withmask]")
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{
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const int w = 16;
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const int h = 16;
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// Mask
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wxBitmap bmask = GetMask(w, h);
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const wxColour clrFg(*wxCYAN);
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const wxColour clrBg(*wxGREEN);
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const unsigned char alpha = 92;
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#if defined(__WXMSW__) || defined(__WXOSX__)
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// premultiplied values
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const wxColour clrFgAlpha(((clrFg.Red() * alpha) + 127) / 255, ((clrFg.Green() * alpha) + 127) / 255, ((clrFg.Blue() * alpha) + 127) / 255);
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#else
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const wxColour clrFgAlpha(clrFg);
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#endif // __WXMSW__ || __WXOSX__
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// Bitmap with mask to be drawn
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wxBitmap bmp(w, h, 32);
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#if defined(__WXMSW__) || defined(__WXOSX__)
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bmp.UseAlpha();
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#endif // __WXMSW__ || __WXOSX__
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{
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wxAlphaPixelData data(bmp);
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REQUIRE(data);
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wxAlphaPixelData::Iterator p(data);
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for ( int y = 0; y < h; y++)
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{
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wxAlphaPixelData::Iterator rowStart = p;
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for ( int x = 0; x < w; x++, ++p )
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{
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if ( x < w / 2 )
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{ // opaque
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p.Red() = clrFg.Red();
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p.Green() = clrFg.Green();
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p.Blue() = clrFg.Blue();
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p.Alpha() = 255;
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}
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else
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{ // with transparency
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p.Red() = clrFgAlpha.Red();
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p.Green() = clrFgAlpha.Green();
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p.Blue() = clrFgAlpha.Blue();
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p.Alpha() = alpha;
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}
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}
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p = rowStart;
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p.OffsetY(data, 1);
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}
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}
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REQUIRE(bmp.HasAlpha());
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REQUIRE(bmp.GetMask() == NULL);
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bmp.SetMask(new wxMask(bmask));
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REQUIRE(bmp.HasAlpha());
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REQUIRE(bmp.GetMask() != NULL);
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// Drawing the bitmap on 24 bpp RGB target using mask
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{
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wxBitmap bmpOut24(w, h, 24);
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REQUIRE_FALSE(bmpOut24.HasAlpha());
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{
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wxMemoryDC dc(bmpOut24);
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dc.SetBackground(wxBrush(clrBg));
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dc.Clear();
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dc.DrawBitmap(bmp, wxPoint(0, 0), true);
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}
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REQUIRE_FALSE(bmpOut24.HasAlpha());
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// Check pixels
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wxNativePixelData data24(bmpOut24);
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REQUIRE(data24);
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wxNativePixelData::Iterator p1(data24);
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p1.OffsetY(data24, h / 4);
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wxNativePixelData::Iterator rowStart1 = p1;
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p1.OffsetX(data24, w / 4); // drawn area - left side opaque
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ASSERT_EQUAL_RGB(p1, clrFg.Red(), clrFg.Green(), clrFg.Blue());
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p1.OffsetX(data24, w / 2); // drawn area - right side with alpha
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#if defined(__WXMSW__) || defined(__WXOSX__)
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// premultiplied values
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ASSERT_EQUAL_RGB(p1, clrFgAlpha.Red() + (clrBg.Red() * (255 - alpha) + 127) / 255,
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clrFgAlpha.Green() + (clrBg.Green() * (255 - alpha) + 127) / 255,
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clrFgAlpha.Blue() + (clrBg.Blue() * (255 - alpha) + 127) / 255);
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#else
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ASSERT_EQUAL_RGB(p1, (clrFg.Red() * alpha + clrBg.Red() * (255 - alpha) + 127) / 255,
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(clrFg.Green() * alpha + clrBg.Green() * (255 - alpha) + 127) / 255,
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(clrFg.Blue() * alpha + clrBg.Blue() * (255 - alpha) + 127) / 255);
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#endif // __WXMSW__ || __WXOSX__
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p1 = rowStart1;
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p1.OffsetY(data24, h / 2);
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p1.OffsetX(data24, w / 4); // masked area - left side
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ASSERT_EQUAL_RGB(p1, clrBg.Red(), clrBg.Green(), clrBg.Blue());
|
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p1.OffsetX(data24, w / 2); // masked area - right side
|
|
ASSERT_EQUAL_RGB(p1, clrBg.Red(), clrBg.Green(), clrBg.Blue());
|
|
}
|
|
|
|
// Drawing the bitmap on 24 bpp RGB target not using mask
|
|
{
|
|
wxBitmap bmpOut24(w, h, 24);
|
|
REQUIRE_FALSE(bmpOut24.HasAlpha());
|
|
{
|
|
wxMemoryDC dc(bmpOut24);
|
|
dc.SetBackground(wxBrush(clrBg));
|
|
dc.Clear();
|
|
|
|
dc.DrawBitmap(bmp, wxPoint(0, 0), false);
|
|
}
|
|
REQUIRE_FALSE(bmpOut24.HasAlpha());
|
|
|
|
// Check pixels
|
|
wxNativePixelData data24(bmpOut24);
|
|
REQUIRE(data24);
|
|
wxNativePixelData::Iterator p1(data24);
|
|
p1.OffsetY(data24, h / 4);
|
|
wxNativePixelData::Iterator rowStart1 = p1;
|
|
p1.OffsetX(data24, w / 4); // left upper side opaque
|
|
ASSERT_EQUAL_RGB(p1, clrFg.Red(), clrFg.Green(), clrFg.Blue());
|
|
p1.OffsetX(data24, w / 2); // right upper side with alpha
|
|
#if defined(__WXMSW__) || defined(__WXOSX__)
|
|
// premultiplied values
|
|
ASSERT_EQUAL_RGB(p1, clrFgAlpha.Red() + (clrBg.Red() * (255 - alpha) + 127) / 255,
|
|
clrFgAlpha.Green() + (clrBg.Green() * (255 - alpha) + 127) / 255,
|
|
clrFgAlpha.Blue() + (clrBg.Blue() * (255 - alpha) + 127) / 255);
|
|
#else
|
|
ASSERT_EQUAL_RGB(p1, (clrFg.Red() * alpha + clrBg.Red() * (255 - alpha) + 127) / 255,
|
|
(clrFg.Green() * alpha + clrBg.Green() * (255 - alpha) + 127) / 255,
|
|
(clrFg.Blue() * alpha + clrBg.Blue() * (255 - alpha) + 127) / 255);
|
|
#endif // __WXMSW__ || __WXOSX__
|
|
p1 = rowStart1;
|
|
p1.OffsetY(data24, h / 2);
|
|
p1.OffsetX(data24, w / 4); // left lower side - same colour as upper
|
|
ASSERT_EQUAL_RGB(p1, clrFg.Red(), clrFg.Green(), clrFg.Blue());
|
|
p1.OffsetX(data24, w / 2); // right lower side - same colour as upper
|
|
#if defined(__WXMSW__) || defined(__WXOSX__)
|
|
// premultiplied values
|
|
ASSERT_EQUAL_RGB(p1, clrFgAlpha.Red() + (clrBg.Red() * (255 - alpha) + 127) / 255,
|
|
clrFgAlpha.Green() + (clrBg.Green() * (255 - alpha) + 127) / 255,
|
|
clrFgAlpha.Blue() + (clrBg.Blue() * (255 - alpha) + 127) / 255);
|
|
#else
|
|
ASSERT_EQUAL_RGB(p1, (clrFg.Red() * alpha + clrBg.Red() * (255 - alpha) + 127) / 255,
|
|
(clrFg.Green() * alpha + clrBg.Green() * (255 - alpha) + 127) / 255,
|
|
(clrFg.Blue() * alpha + clrBg.Blue() * (255 - alpha) + 127) / 255);
|
|
#endif // __WXMSW__ || __WXOSX__
|
|
}
|
|
|
|
#if defined(__WXMSW__) || defined(__WXOSX__)
|
|
// Drawing the bitmap on 32 bpp xRGB target using mask
|
|
{
|
|
wxBitmap bmpOut32(w, h, 32);
|
|
REQUIRE_FALSE(bmpOut32.HasAlpha());
|
|
{
|
|
wxMemoryDC dc(bmpOut32);
|
|
dc.SetBackground(wxBrush(clrBg));
|
|
dc.Clear();
|
|
|
|
dc.DrawBitmap(bmp, wxPoint(0, 0), true);
|
|
}
|
|
REQUIRE(bmpOut32.GetDepth() == 32);
|
|
REQUIRE_FALSE(bmpOut32.HasAlpha());
|
|
|
|
// Check pixels
|
|
wxNative32PixelData data32(bmpOut32);
|
|
REQUIRE(data32);
|
|
wxNative32PixelData::Iterator p2(data32);
|
|
p2.OffsetY(data32, h / 4);
|
|
wxNative32PixelData::Iterator rowStart2 = p2;
|
|
p2.OffsetX(data32, w / 4); // drawn area - left side opaque
|
|
ASSERT_EQUAL_RGB(p2, clrFg.Red(), clrFg.Green(), clrFg.Blue());
|
|
p2.OffsetX(data32, w / 2); // drawn area - right side with alpha
|
|
// premultiplied values
|
|
ASSERT_EQUAL_RGB(p2, clrFgAlpha.Red() + (clrBg.Red() * (255 - alpha) + 127) / 255,
|
|
clrFgAlpha.Green() + (clrBg.Green() * (255 - alpha) + 127) / 255,
|
|
clrFgAlpha.Blue() + (clrBg.Blue() * (255 - alpha) + 127) / 255);
|
|
p2 = rowStart2;
|
|
p2.OffsetY(data32, h / 2);
|
|
p2.OffsetX(data32, w / 4); // masked area - left side
|
|
ASSERT_EQUAL_RGB(p2, clrBg.Red(), clrBg.Green(), clrBg.Blue());
|
|
p2.OffsetX(data32, w / 2); // masked area - right side
|
|
ASSERT_EQUAL_RGB(p2, clrBg.Red(), clrBg.Green(), clrBg.Blue());
|
|
}
|
|
|
|
// Drawing the bitmap on 32 bpp xRGB target not using mask
|
|
{
|
|
wxBitmap bmpOut32(w, h, 32);
|
|
REQUIRE_FALSE(bmpOut32.HasAlpha());
|
|
{
|
|
wxMemoryDC dc(bmpOut32);
|
|
dc.SetBackground(wxBrush(clrBg));
|
|
dc.Clear();
|
|
|
|
dc.DrawBitmap(bmp, wxPoint(0, 0), false);
|
|
}
|
|
REQUIRE(bmpOut32.GetDepth() == 32);
|
|
REQUIRE_FALSE(bmpOut32.HasAlpha());
|
|
|
|
// Check pixels
|
|
wxNative32PixelData data32(bmpOut32);
|
|
REQUIRE(data32);
|
|
wxNative32PixelData::Iterator p2(data32);
|
|
p2.OffsetY(data32, h / 4);
|
|
wxNative32PixelData::Iterator rowStart2 = p2;
|
|
p2.OffsetX(data32, w / 4); // left upper side opaque
|
|
ASSERT_EQUAL_RGB(p2, clrFg.Red(), clrFg.Green(), clrFg.Blue());
|
|
p2.OffsetX(data32, w / 2); // right upper side with alpha
|
|
// premultiplied values
|
|
ASSERT_EQUAL_RGB(p2, clrFgAlpha.Red() + (clrBg.Red() * (255 - alpha) + 127) / 255,
|
|
clrFgAlpha.Green() + (clrBg.Green() * (255 - alpha) + 127) / 255,
|
|
clrFgAlpha.Blue() + (clrBg.Blue() * (255 - alpha) + 127) / 255);
|
|
p2 = rowStart2;
|
|
p2.OffsetY(data32, h / 2);
|
|
p2.OffsetX(data32, w / 4); // left lower side - same colour as upper
|
|
ASSERT_EQUAL_RGB(p2, clrFg.Red(), clrFg.Green(), clrFg.Blue());
|
|
p2.OffsetX(data32, w / 2); // right lower side - same colour as upper
|
|
// premultiplied values
|
|
ASSERT_EQUAL_RGB(p2, clrFgAlpha.Red() + (clrBg.Red() * (255 - alpha) + 127) / 255,
|
|
clrFgAlpha.Green() + (clrBg.Green() * (255 - alpha) + 127) / 255,
|
|
clrFgAlpha.Blue() + (clrBg.Blue() * (255 - alpha) + 127) / 255);
|
|
}
|
|
#endif // __WXMSW__ || __WXOSX__
|
|
}
|
|
|
|
TEST_CASE("BitmapTestCase::SubBitmapNonAlpha", "[bitmap][subbitmap][nonalpha]")
|
|
{
|
|
const int w = 16;
|
|
const int h = 16;
|
|
|
|
const wxColour clrTopLeft(*wxBLUE);
|
|
const wxColour clrTopRight(*wxRED);
|
|
const wxColour clrBottomLeft(*wxGREEN);
|
|
const wxColour clrBottomRight(*wxCYAN);
|
|
|
|
// Bitmap
|
|
wxBitmap bmp(w, h, 24);
|
|
{
|
|
wxMemoryDC dc(bmp);
|
|
dc.SetPen(wxPen(clrTopLeft));
|
|
dc.SetBrush(wxBrush(clrTopLeft));
|
|
dc.DrawRectangle(0, 0, w / 2, h / 2);
|
|
dc.SetPen(wxPen(clrTopRight));
|
|
dc.SetBrush(wxBrush(clrTopRight));
|
|
dc.DrawRectangle(w / 2, 0, w / 2, h / 2);
|
|
dc.SetPen(wxPen(clrBottomLeft));
|
|
dc.SetBrush(wxBrush(clrBottomLeft));
|
|
dc.DrawRectangle(0, h / 2, w / 2, h / 2);
|
|
dc.SetPen(wxPen(clrBottomRight));
|
|
dc.SetBrush(wxBrush(clrBottomRight));
|
|
dc.DrawRectangle(w / 2, h / 2, w / 2, h / 2);
|
|
}
|
|
REQUIRE_FALSE(bmp.HasAlpha());
|
|
REQUIRE(bmp.GetMask() == NULL);
|
|
|
|
// Get sub bitmap
|
|
wxBitmap subBmp = bmp.GetSubBitmap(wxRect(w/4, h/4, w/2, h/2));
|
|
// Check sub bitmap attributes
|
|
REQUIRE(subBmp.GetWidth() == w/2);
|
|
REQUIRE(subBmp.GetHeight() == h/2);
|
|
REQUIRE(subBmp.GetDepth() == bmp.GetDepth());
|
|
REQUIRE(subBmp.HasAlpha() == bmp.HasAlpha());
|
|
REQUIRE((subBmp.GetMask() == NULL) == (bmp.GetMask() == NULL));
|
|
|
|
const int w2 = w / 2;
|
|
const int h2 = h / 2;
|
|
// Check sub bitmap pixels
|
|
wxNativePixelData data(subBmp);
|
|
REQUIRE(data);
|
|
wxNativePixelData::Iterator p(data);
|
|
p.OffsetY(data, h2 / 4);
|
|
wxNativePixelData::Iterator rowStart = p;
|
|
p.OffsetX(data, w2 / 4); // top-left point
|
|
ASSERT_EQUAL_RGB(p, clrTopLeft.Red(), clrTopLeft.Green(), clrTopLeft.Blue());
|
|
p.OffsetX(data, w2 / 2); // top-right point
|
|
ASSERT_EQUAL_RGB(p, clrTopRight.Red(), clrTopRight.Green(), clrTopRight.Blue());
|
|
p = rowStart;
|
|
p.OffsetY(data, h2 / 2);
|
|
p.OffsetX(data, w2 / 4); // bottom-left point
|
|
ASSERT_EQUAL_RGB(p, clrBottomLeft.Red(), clrBottomLeft.Green(), clrBottomLeft.Blue());
|
|
p.OffsetX(data, w2 / 2); // bottom-right point
|
|
ASSERT_EQUAL_RGB(p, clrBottomRight.Red(), clrBottomRight.Green(), clrBottomRight.Blue());
|
|
}
|
|
|
|
TEST_CASE("BitmapTestCase::SubBitmapNonAlphaWithMask", "[bitmap][subbitmap][nonalpha][withmask]")
|
|
{
|
|
const int w = 16;
|
|
const int h = 16;
|
|
|
|
// Mask
|
|
wxBitmap bmpMask = GetMask(w, h);
|
|
|
|
const wxColour clrTopLeft(*wxBLUE);
|
|
const wxColour clrTopRight(*wxRED);
|
|
const wxColour clrBottomLeft(*wxGREEN);
|
|
const wxColour clrBottomRight(*wxCYAN);
|
|
|
|
// Bitmap
|
|
wxBitmap bmp(w, h, 24);
|
|
{
|
|
wxMemoryDC dc(bmp);
|
|
dc.SetPen(wxPen(clrTopLeft));
|
|
dc.SetBrush(wxBrush(clrTopLeft));
|
|
dc.DrawRectangle(0, 0, w / 2, h / 2);
|
|
dc.SetPen(wxPen(clrTopRight));
|
|
dc.SetBrush(wxBrush(clrTopRight));
|
|
dc.DrawRectangle(w / 2, 0, w / 2, h / 2);
|
|
dc.SetPen(wxPen(clrBottomLeft));
|
|
dc.SetBrush(wxBrush(clrBottomLeft));
|
|
dc.DrawRectangle(0, h / 2, w / 2, h / 2);
|
|
dc.SetPen(wxPen(clrBottomRight));
|
|
dc.SetBrush(wxBrush(clrBottomRight));
|
|
dc.DrawRectangle(w / 2, h / 2, w / 2, h / 2);
|
|
}
|
|
REQUIRE_FALSE(bmp.HasAlpha());
|
|
REQUIRE(bmp.GetMask() == NULL);
|
|
bmp.SetMask(new wxMask(bmpMask));
|
|
REQUIRE_FALSE(bmp.HasAlpha());
|
|
REQUIRE(bmp.GetMask() != NULL);
|
|
|
|
// Get sub bitmap
|
|
wxBitmap subBmp = bmp.GetSubBitmap(wxRect(w/4, h/4, w/2, h/2));
|
|
const int w2 = w / 2;
|
|
const int h2 = h / 2;
|
|
// Check sub bitmap attributes
|
|
REQUIRE(subBmp.GetWidth() == w2);
|
|
REQUIRE(subBmp.GetHeight() == h2);
|
|
REQUIRE(subBmp.GetDepth() == bmp.GetDepth());
|
|
REQUIRE(subBmp.HasAlpha() == bmp.HasAlpha());
|
|
REQUIRE((subBmp.GetMask() == NULL) == (bmp.GetMask() == NULL));
|
|
|
|
// Check sub bitmap pixels
|
|
{
|
|
wxNativePixelData data(subBmp);
|
|
REQUIRE(data);
|
|
wxNativePixelData::Iterator p(data);
|
|
p.OffsetY(data, h2 / 4);
|
|
wxNativePixelData::Iterator rowStart = p;
|
|
p.OffsetX(data, w2 / 4); // top-left point
|
|
ASSERT_EQUAL_RGB(p, clrTopLeft.Red(), clrTopLeft.Green(), clrTopLeft.Blue());
|
|
p.OffsetX(data, w2 / 2); // top-right point
|
|
ASSERT_EQUAL_RGB(p, clrTopRight.Red(), clrTopRight.Green(), clrTopRight.Blue());
|
|
p = rowStart;
|
|
p.OffsetY(data, h2 / 2);
|
|
p.OffsetX(data, w2 / 4); // bottom-left point
|
|
ASSERT_EQUAL_RGB(p, clrBottomLeft.Red(), clrBottomLeft.Green(), clrBottomLeft.Blue());
|
|
p.OffsetX(data, w2 / 2); // bottom-right point
|
|
ASSERT_EQUAL_RGB(p, clrBottomRight.Red(), clrBottomRight.Green(), clrBottomRight.Blue());
|
|
}
|
|
|
|
// Check sub bitmap mask
|
|
wxColour maskClrTopLeft;
|
|
wxColour maskClrTopRight;
|
|
wxColour maskClrBottomLeft;
|
|
wxColour maskClrBottomRight;
|
|
// Fetch sample original mask pixels
|
|
{
|
|
wxNativePixelData data(bmpMask);
|
|
REQUIRE(data);
|
|
wxNativePixelData::Iterator p(data);
|
|
p.OffsetY(data, h / 4);
|
|
wxNativePixelData::Iterator rowStart = p;
|
|
p.OffsetX(data, w / 4); // top-left point
|
|
maskClrTopLeft = wxColour(p.Red(), p.Green(), p.Blue());
|
|
p.OffsetX(data, w / 2); // top-right point
|
|
maskClrTopRight = wxColour(p.Red(), p.Green(), p.Blue());
|
|
p = rowStart;
|
|
p.OffsetY(data, h / 2);
|
|
p.OffsetX(data, w / 4); // bottom-left point
|
|
maskClrBottomLeft = wxColour(p.Red(), p.Green(), p.Blue());
|
|
p.OffsetX(data, w / 2); // bottom-right point
|
|
maskClrBottomRight = wxColour(p.Red(), p.Green(), p.Blue());
|
|
}
|
|
CHECK(maskClrTopLeft == *wxWHITE);
|
|
CHECK(maskClrTopRight == *wxWHITE);
|
|
CHECK(maskClrBottomLeft == *wxBLACK);
|
|
CHECK(maskClrBottomRight == *wxBLACK);
|
|
|
|
wxBitmap subBmpMask = subBmp.GetMask()->GetBitmap();
|
|
// Check sub bitmap mask attributes
|
|
REQUIRE(subBmpMask.GetWidth() == subBmp.GetWidth());
|
|
REQUIRE(subBmpMask.GetHeight() == subBmp.GetHeight());
|
|
#if !defined(__WXOSX__)
|
|
REQUIRE(subBmpMask.GetDepth() == 1);
|
|
#endif // !__WXOSX__
|
|
REQUIRE_FALSE(subBmpMask.HasAlpha());
|
|
REQUIRE_FALSE(subBmpMask.GetMask());
|
|
// Check sub bitmap mask pixels
|
|
{
|
|
wxNativePixelData data(subBmpMask);
|
|
REQUIRE(data);
|
|
wxNativePixelData::Iterator p(data);
|
|
p.OffsetY(data, h2 / 4);
|
|
wxNativePixelData::Iterator rowStart = p;
|
|
p.OffsetX(data, w2 / 4); // top-left point
|
|
ASSERT_EQUAL_RGB(p, maskClrTopLeft.Red(), maskClrTopLeft.Green(), maskClrTopLeft.Blue());
|
|
p.OffsetX(data, w2 / 2); // top-right point
|
|
ASSERT_EQUAL_RGB(p, maskClrTopRight.Red(), maskClrTopRight.Green(), maskClrTopRight.Blue());
|
|
p = rowStart;
|
|
p.OffsetY(data, h2 / 2);
|
|
p.OffsetX(data, w2 / 4); // bottom-left point
|
|
ASSERT_EQUAL_RGB(p, maskClrBottomLeft.Red(), maskClrBottomLeft.Green(), maskClrBottomLeft.Blue());
|
|
p.OffsetX(data, w2 / 2); // bottom-right point
|
|
ASSERT_EQUAL_RGB(p, maskClrBottomRight.Red(), maskClrBottomRight.Green(), maskClrBottomRight.Blue());
|
|
}
|
|
}
|
|
|
|
TEST_CASE("BitmapTestCase::SubBitmapAlphaWithMask", "[bitmap][subbitmap][alpha][withmask]")
|
|
{
|
|
const int w = 16;
|
|
const int h = 16;
|
|
|
|
// Mask
|
|
wxBitmap bmpMask = GetMask(w, h);
|
|
|
|
// Bitmap
|
|
const wxColour clrLeft(*wxCYAN);
|
|
const unsigned char alpha = 92;
|
|
|
|
#if defined(__WXMSW__) || defined(__WXOSX__)
|
|
// premultiplied values
|
|
const wxColour clrRight(((clrLeft.Red() * alpha) + 127) / 255, ((clrLeft.Green() * alpha) + 127) / 255, ((clrLeft.Blue() * alpha) + 127) / 255, alpha);
|
|
#else
|
|
const wxColour clrRight(clrLeft.Red(), clrLeft.Green(), clrLeft.Blue(), alpha);
|
|
#endif // __WXMSW__ || __WXOSX__
|
|
|
|
wxBitmap bmp(w, h, 32);
|
|
#if defined(__WXMSW__) || defined(__WXOSX__)
|
|
bmp.UseAlpha();
|
|
#endif // __WXMSW__ || __WXOSX__
|
|
{
|
|
wxAlphaPixelData data(bmp);
|
|
REQUIRE(data);
|
|
wxAlphaPixelData::Iterator p(data);
|
|
for ( int y = 0; y < h; y++)
|
|
{
|
|
wxAlphaPixelData::Iterator rowStart = p;
|
|
for ( int x = 0; x < w; x++, ++p )
|
|
{
|
|
if ( x < w / 2 )
|
|
{ // opaque
|
|
p.Red() = clrLeft.Red();
|
|
p.Green() = clrLeft.Green();
|
|
p.Blue() = clrLeft.Blue();
|
|
p.Alpha() = clrLeft.Alpha();
|
|
}
|
|
else
|
|
{ // with transparency
|
|
p.Red() = clrRight.Red();
|
|
p.Green() = clrRight.Green();
|
|
p.Blue() = clrRight.Blue();
|
|
p.Alpha() = clrRight.Alpha();
|
|
}
|
|
}
|
|
p = rowStart;
|
|
p.OffsetY(data, 1);
|
|
}
|
|
}
|
|
REQUIRE(bmp.HasAlpha());
|
|
REQUIRE(!bmp.GetMask());
|
|
bmp.SetMask(new wxMask(bmpMask));
|
|
REQUIRE(bmp.HasAlpha());
|
|
REQUIRE(bmp.GetMask());
|
|
|
|
// Get sub bitmap
|
|
wxBitmap subBmp = bmp.GetSubBitmap(wxRect(w/4, h/4, w/2, h/2));
|
|
const int w2 = w / 2;
|
|
const int h2 = h / 2;
|
|
// Check sub bitmap attributes
|
|
REQUIRE(subBmp.GetWidth() == w2);
|
|
REQUIRE(subBmp.GetHeight() == h2);
|
|
REQUIRE(subBmp.GetDepth() == bmp.GetDepth());
|
|
REQUIRE(subBmp.HasAlpha() == bmp.HasAlpha());
|
|
REQUIRE((subBmp.GetMask() == NULL) == (bmp.GetMask() == NULL));
|
|
|
|
// Check sub bitmap pixels
|
|
{
|
|
wxAlphaPixelData data(subBmp);
|
|
REQUIRE(data);
|
|
wxAlphaPixelData::Iterator p(data);
|
|
p.OffsetY(data, h2 / 4);
|
|
wxAlphaPixelData::Iterator rowStart = p;
|
|
p.OffsetX(data, w2 / 4); // top-left point
|
|
ASSERT_EQUAL_RGBA(p, clrLeft.Red(), clrLeft.Green(), clrLeft.Blue(), clrLeft.Alpha());
|
|
p.OffsetX(data, w2 / 2); // top-right point
|
|
ASSERT_EQUAL_RGBA(p, clrRight.Red(), clrRight.Green(), clrRight.Blue(), clrRight.Alpha());
|
|
p = rowStart;
|
|
p.OffsetY(data, h2 / 2);
|
|
p.OffsetX(data, w2 / 4); // bottom-left point
|
|
ASSERT_EQUAL_RGBA(p, clrLeft.Red(), clrLeft.Green(), clrLeft.Blue(), clrLeft.Alpha());
|
|
p.OffsetX(data, w2 / 2); // bottom-right point
|
|
ASSERT_EQUAL_RGBA(p, clrRight.Red(), clrRight.Green(), clrRight.Blue(), clrRight.Alpha());
|
|
}
|
|
|
|
// Check sub bitmap mask
|
|
wxColour maskClrTopLeft;
|
|
wxColour maskClrTopRight;
|
|
wxColour maskClrBottomLeft;
|
|
wxColour maskClrBottomRight;
|
|
// Fetch sample original mask pixels
|
|
{
|
|
wxNativePixelData data(bmpMask);
|
|
REQUIRE(data);
|
|
wxNativePixelData::Iterator p(data);
|
|
p.OffsetY(data, h / 4);
|
|
wxNativePixelData::Iterator rowStart = p;
|
|
p.OffsetX(data, w / 4); // top-left point
|
|
maskClrTopLeft = wxColour(p.Red(), p.Green(), p.Blue());
|
|
p.OffsetX(data, w / 2); // top-right point
|
|
maskClrTopRight = wxColour(p.Red(), p.Green(), p.Blue());
|
|
p = rowStart;
|
|
p.OffsetY(data, h / 2);
|
|
p.OffsetX(data, w / 4); // bottom-left point
|
|
maskClrBottomLeft = wxColour(p.Red(), p.Green(), p.Blue());
|
|
p.OffsetX(data, w / 2); // bottom-right point
|
|
maskClrBottomRight = wxColour(p.Red(), p.Green(), p.Blue());
|
|
}
|
|
CHECK(maskClrTopLeft == *wxWHITE);
|
|
CHECK(maskClrTopRight == *wxWHITE);
|
|
CHECK(maskClrBottomLeft == *wxBLACK);
|
|
CHECK(maskClrBottomRight == *wxBLACK);
|
|
|
|
wxBitmap subBmpMask = subBmp.GetMask()->GetBitmap();
|
|
// Check sub bitmap mask attributes
|
|
REQUIRE(subBmpMask.GetWidth() == subBmp.GetWidth());
|
|
REQUIRE(subBmpMask.GetHeight() == subBmp.GetHeight());
|
|
#if !defined(__WXOSX__)
|
|
REQUIRE(subBmpMask.GetDepth() == 1);
|
|
#endif // !__WXOSX__
|
|
REQUIRE_FALSE(subBmpMask.HasAlpha());
|
|
REQUIRE_FALSE(subBmpMask.GetMask());
|
|
// Check sub bitmap mask pixels
|
|
{
|
|
wxNativePixelData data(subBmpMask);
|
|
REQUIRE(data);
|
|
wxNativePixelData::Iterator p(data);
|
|
p.OffsetY(data, h2 / 4);
|
|
wxNativePixelData::Iterator rowStart = p;
|
|
p.OffsetX(data, w2 / 4); // top-left point
|
|
ASSERT_EQUAL_RGB(p, maskClrTopLeft.Red(), maskClrTopLeft.Green(), maskClrTopLeft.Blue());
|
|
p.OffsetX(data, w2 / 2); // top-right point
|
|
ASSERT_EQUAL_RGB(p, maskClrTopRight.Red(), maskClrTopRight.Green(), maskClrTopRight.Blue());
|
|
p = rowStart;
|
|
p.OffsetY(data, h2 / 2);
|
|
p.OffsetX(data, w2 / 4); // bottom-left point
|
|
ASSERT_EQUAL_RGB(p, maskClrBottomLeft.Red(), maskClrBottomLeft.Green(), maskClrBottomLeft.Blue());
|
|
p.OffsetX(data, w2 / 2); // bottom-right point
|
|
ASSERT_EQUAL_RGB(p, maskClrBottomRight.Red(), maskClrBottomRight.Green(), maskClrBottomRight.Blue());
|
|
}
|
|
}
|
|
|
|
namespace Catch
|
|
{
|
|
template <>
|
|
struct StringMaker<wxBitmap>
|
|
{
|
|
static std::string convert(const wxBitmap& bmp)
|
|
{
|
|
return wxString::Format("bitmap of size %d*%d",
|
|
bmp.GetWidth(),
|
|
bmp.GetHeight()).ToStdString();
|
|
}
|
|
};
|
|
}
|
|
|
|
class BitmapColourMatcher : public Catch::MatcherBase<wxBitmap>
|
|
{
|
|
public:
|
|
explicit BitmapColourMatcher(const wxColour& col)
|
|
: m_col(col)
|
|
{
|
|
}
|
|
|
|
bool match(const wxBitmap& bmp) const wxOVERRIDE
|
|
{
|
|
const wxImage img(bmp.ConvertToImage());
|
|
|
|
const unsigned char* data = img.GetData();
|
|
for ( int y = 0; y < img.GetHeight(); ++y )
|
|
{
|
|
for ( int x = 0; x < img.GetWidth(); ++x, data += 3 )
|
|
{
|
|
if ( wxColour(data[0], data[1], data[2]) != m_col )
|
|
return false;
|
|
}
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
std::string describe() const wxOVERRIDE
|
|
{
|
|
return wxString::Format("doesn't have all %s pixels",
|
|
m_col.GetAsString()).ToStdString();
|
|
}
|
|
|
|
private:
|
|
const wxColour m_col;
|
|
};
|
|
|
|
inline BitmapColourMatcher AllPixelsAre(const wxColour& col)
|
|
{
|
|
return BitmapColourMatcher(col);
|
|
}
|
|
|
|
TEST_CASE("DC::Clear", "[bitmap][dc]")
|
|
{
|
|
// Just some arbitrary pixel data.
|
|
static unsigned char data[] =
|
|
{
|
|
0xff, 0, 0,
|
|
0, 0xff, 0,
|
|
0, 0, 0xff,
|
|
0x7f, 0, 0x7f
|
|
};
|
|
|
|
const wxImage img(2, 2, data, true /* don't take ownership of data */);
|
|
|
|
wxBitmap bmp(img);
|
|
|
|
SECTION("Clearing uses white by default")
|
|
{
|
|
{
|
|
wxMemoryDC dc(bmp);
|
|
dc.Clear();
|
|
}
|
|
|
|
CHECK_THAT(bmp, AllPixelsAre(*wxWHITE));
|
|
}
|
|
|
|
SECTION("Clearing with specified brush works as expected")
|
|
{
|
|
{
|
|
wxMemoryDC dc(bmp);
|
|
dc.SetBackground(*wxRED_BRUSH);
|
|
dc.Clear();
|
|
}
|
|
CHECK_THAT(bmp, AllPixelsAre(*wxRED));
|
|
}
|
|
|
|
SECTION("Clearing with transparent brush does nothing")
|
|
{
|
|
{
|
|
wxMemoryDC dc(bmp);
|
|
dc.SetBackground(*wxTRANSPARENT_BRUSH);
|
|
dc.Clear();
|
|
}
|
|
|
|
CHECK_THAT(bmp.ConvertToImage(), RGBSameAs(img));
|
|
}
|
|
|
|
SECTION("Clearing with invalid brush uses white too")
|
|
{
|
|
{
|
|
wxMemoryDC dc(bmp);
|
|
dc.SetBackground(*wxBLACK_BRUSH);
|
|
dc.SetBackground(wxBrush());
|
|
dc.Clear();
|
|
}
|
|
|
|
CHECK_THAT(bmp, AllPixelsAre(*wxWHITE));
|
|
}
|
|
}
|
|
|
|
#endif //wxHAS_RAW_BITMAP
|