588 lines
20 KiB
C++
588 lines
20 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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#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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#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
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ASSERT_EQUAL_RGB(p1, clrBg.Red(), clrBg.Green(), clrBg.Blue());
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}
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// Drawing the bitmap on 24 bpp RGB target not 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));
|
|
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__
|
|
}
|
|
|
|
#endif //wxHAS_RAW_BITMAP
|