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bde82aa9fb8afd78f06bd05aabe100f668085789
wxWidgets/tests/graphics/imagelist.cpp
Artur Wieczorek bde82aa9fb Fix adding image using bitmap and mask colour to nonmasked wxImageList (wxMSW) 
If image using bitmap and mask colour is added to nonmasked wxImageList we
need to convert effective mask to alpha channel values prior to adding the
image to the native list to preserve transparency.
2021-01-16 23:01:48 +01:00

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///////////////////////////////////////////////////////////////////////////////
// Name: tests/graphics/imagelist.cpp
// Purpose: image list unit tests
// Author: Artur Wieczorek
// Created: 2021-01-11
// Copyright: (c) 2021 wxWidgets development team
///////////////////////////////////////////////////////////////////////////////
// ----------------------------------------------------------------------------
// headers
// ----------------------------------------------------------------------------
#include "testprec.h"
#include "wx/bitmap.h"
#include "wx/graphics.h"
#include "wx/icon.h"
#include "wx/imaglist.h"
#include "wx/dcmemory.h"
// ----------------------------------------------------------------------------
// tests
// ----------------------------------------------------------------------------
TEST_CASE("ImageList:WithMask", "[imagelist][withmask]")
{
wxInitAllImageHandlers();
wxBitmap bmpRGB(32, 32, 24);
{
wxMemoryDC mdc(bmpRGB);
mdc.SetBackground(*wxBLUE_BRUSH);
mdc.Clear();
mdc.SetBrush(*wxRED_BRUSH);
mdc.DrawRectangle(4, 4, 24, 24);
}
REQUIRE(bmpRGB.IsOk());
wxBitmap bmpRGBA;
bmpRGBA.LoadFile("image/wx.png", wxBITMAP_TYPE_PNG);
REQUIRE(bmpRGBA.IsOk());
wxBitmap bmpMask(32, 32, 1);
{
wxMemoryDC mdc(bmpMask);
#if wxUSE_GRAPHICS_CONTEXT
wxGraphicsContext* gc = mdc.GetGraphicsContext();
if ( gc )
gc->SetAntialiasMode(wxANTIALIAS_NONE);
#endif //wxUSE_GRAPHICS_CONTEXT
mdc.SetBackground(*wxBLACK_BRUSH);
mdc.Clear();
mdc.SetBrush(*wxWHITE_BRUSH);
mdc.DrawRectangle(0, 0, 16, 32);
}
wxBitmap bmpRGBWithMask(bmpRGB);
bmpRGBWithMask.SetMask(new wxMask(bmpMask));
REQUIRE(bmpRGBWithMask.IsOk());
wxBitmap bmpRGBAWithMask(bmpRGBA);
bmpRGBAWithMask.SetMask(new wxMask(bmpMask));
REQUIRE(bmpRGBAWithMask.IsOk());
wxIcon ico;
ico.LoadFile("image/wx.ico", wxBITMAP_TYPE_ICO);
REQUIRE(ico.IsOk());
REQUIRE(bmpRGB.HasAlpha() == false);
REQUIRE(bmpRGB.GetMask() == NULL);
REQUIRE(bmpRGBWithMask.HasAlpha() == false);
REQUIRE(bmpRGBWithMask.GetMask() != NULL);
REQUIRE(bmpRGBA.HasAlpha() == true);
REQUIRE(bmpRGBA.GetMask() == NULL);
REQUIRE(bmpRGBAWithMask.HasAlpha() == true);
REQUIRE(bmpRGBAWithMask.GetMask() != NULL);
wxImageList il(32, 32, true);
SECTION("Add RGB image to list")
{
il.RemoveAll();
int idx = il.Add(bmpRGB);
CHECK(il.GetImageCount() == 1);
wxBitmap bmp1 = il.GetBitmap(idx);
CHECK(bmp1.HasAlpha() == false);
CHECK(bmp1.GetMask() != NULL);
CHECK(bmp1.GetWidth() == 32);
CHECK(bmp1.GetHeight() == 32);
idx = il.Add(bmpRGBWithMask);
CHECK(il.GetImageCount() == 2);
wxBitmap bmp2 = il.GetBitmap(idx);
CHECK(bmp2.HasAlpha() == false);
CHECK(bmp2.GetMask() != NULL);
CHECK(bmp2.GetWidth() == 32);
CHECK(bmp2.GetHeight() == 32);
idx = il.Add(bmpRGB, *wxRED);
CHECK(il.GetImageCount() == 3);
wxBitmap bmp3 = il.GetBitmap(idx);
CHECK(bmp3.HasAlpha() == false);
CHECK(bmp3.GetMask() != NULL);
CHECK(bmp3.GetWidth() == 32);
CHECK(bmp3.GetHeight() == 32);
}
SECTION("Add RGBA image to list")
{
il.RemoveAll();
int idx = il.Add(bmpRGBA);
CHECK(il.GetImageCount() == 1);
wxBitmap bmp1 = il.GetBitmap(idx);
CHECK(bmp1.HasAlpha() == false);
CHECK(bmp1.GetMask() != NULL);
CHECK(bmp1.GetWidth() == 32);
CHECK(bmp1.GetHeight() == 32);
idx = il.Add(bmpRGBAWithMask);
CHECK(il.GetImageCount() == 2);
wxBitmap bmp2 = il.GetBitmap(idx);
CHECK(bmp2.HasAlpha() == false);
CHECK(bmp2.GetMask() != NULL);
CHECK(bmp2.GetWidth() == 32);
CHECK(bmp2.GetHeight() == 32);
idx = il.Add(bmpRGBA, *wxRED);
CHECK(il.GetImageCount() == 3);
wxBitmap bmp3 = il.GetBitmap(idx);
CHECK(bmp3.HasAlpha() == false);
CHECK(bmp3.GetMask() != NULL);
CHECK(bmp3.GetWidth() == 32);
CHECK(bmp3.GetHeight() == 32);
}
SECTION("Add icon to list")
{
il.RemoveAll();
int idx = il.Add(ico);
CHECK(il.GetImageCount() == 1);
wxIcon icon1 = il.GetIcon(idx);
CHECK(icon1.GetWidth() == 32);
CHECK(icon1.GetHeight() == 32);
}
SECTION("Replace with RGB image")
{
il.RemoveAll();
int idx1 = il.Add(bmpRGBA);
CHECK(il.GetImageCount() == 1);
int idx2 = il.Add(bmpRGBAWithMask);
CHECK(il.GetImageCount() == 2);
il.Replace(idx1, bmpRGB);
il.Replace(idx2, bmpRGBWithMask);
wxBitmap bmp1 = il.GetBitmap(idx1);
CHECK(bmp1.HasAlpha() == false);
CHECK(bmp1.GetMask() != NULL);
CHECK(bmp1.GetWidth() == 32);
CHECK(bmp1.GetHeight() == 32);
wxBitmap bmp2 = il.GetBitmap(idx2);
CHECK(bmp2.HasAlpha() == false);
CHECK(bmp2.GetMask() != NULL);
CHECK(bmp2.GetWidth() == 32);
CHECK(bmp2.GetHeight() == 32);
}
SECTION("Replace with RGBA image")
{
il.RemoveAll();
int idx1 = il.Add(bmpRGB);
CHECK(il.GetImageCount() == 1);
int idx2 = il.Add(bmpRGBWithMask);
CHECK(il.GetImageCount() == 2);
il.Replace(idx1, bmpRGBA);
il.Replace(idx2, bmpRGBAWithMask);
wxBitmap bmp1 = il.GetBitmap(idx1);
CHECK(bmp1.HasAlpha() == false);
CHECK(bmp1.GetMask() != NULL);
CHECK(bmp1.GetWidth() == 32);
CHECK(bmp1.GetHeight() == 32);
wxBitmap bmp2 = il.GetBitmap(idx2);
CHECK(bmp2.HasAlpha() == false);
CHECK(bmp2.GetMask() != NULL);
CHECK(bmp2.GetWidth() == 32);
CHECK(bmp2.GetHeight() == 32);
}
}
TEST_CASE("ImageList:NoMask", "[imagelist][nomask]")
{
wxInitAllImageHandlers();
wxBitmap bmpRGB(32, 32, 24);
{
wxMemoryDC mdc(bmpRGB);
mdc.SetBackground(*wxBLUE_BRUSH);
mdc.Clear();
mdc.SetBrush(*wxRED_BRUSH);
mdc.DrawRectangle(4, 4, 24, 24);
}
REQUIRE(bmpRGB.IsOk());
wxBitmap bmpRGBA;
bmpRGBA.LoadFile("image/wx.png", wxBITMAP_TYPE_PNG);
REQUIRE(bmpRGBA.IsOk());
wxBitmap bmpMask(32, 32, 1);
{
wxMemoryDC mdc(bmpMask);
#if wxUSE_GRAPHICS_CONTEXT
wxGraphicsContext* gc = mdc.GetGraphicsContext();
if ( gc )
gc->SetAntialiasMode(wxANTIALIAS_NONE);
#endif //wxUSE_GRAPHICS_CONTEXT
mdc.SetBackground(*wxBLACK_BRUSH);
mdc.Clear();
mdc.SetBrush(*wxWHITE_BRUSH);
mdc.DrawRectangle(0, 0, 16, 32);
}
wxBitmap bmpRGBWithMask(bmpRGB);
bmpRGBWithMask.SetMask(new wxMask(bmpMask));
REQUIRE(bmpRGBWithMask.IsOk());
wxBitmap bmpRGBAWithMask(bmpRGBA);
bmpRGBAWithMask.SetMask(new wxMask(bmpMask));
REQUIRE(bmpRGBAWithMask.IsOk());
wxIcon ico;
ico.LoadFile("image/wx.ico", wxBITMAP_TYPE_ICO);
REQUIRE(ico.IsOk());
REQUIRE(bmpRGB.HasAlpha() == false);
REQUIRE(bmpRGB.GetMask() == NULL);
REQUIRE(bmpRGBWithMask.HasAlpha() == false);
REQUIRE(bmpRGBWithMask.GetMask() != NULL);
REQUIRE(bmpRGBA.HasAlpha() == true);
REQUIRE(bmpRGBA.GetMask() == NULL);
REQUIRE(bmpRGBAWithMask.HasAlpha() == true);
REQUIRE(bmpRGBAWithMask.GetMask() != NULL);
wxImageList il(32, 32, false);
SECTION("Add RGB image to list")
{
il.RemoveAll();
int idx = il.Add(bmpRGB);
CHECK(il.GetImageCount() == 1);
wxBitmap bmp1 = il.GetBitmap(idx);
CHECK(bmp1.HasAlpha() == false);
CHECK(bmp1.GetMask() == NULL);
CHECK(bmp1.GetWidth() == 32);
CHECK(bmp1.GetHeight() == 32);
idx = il.Add(bmpRGBWithMask);
CHECK(il.GetImageCount() == 2);
wxBitmap bmp2 = il.GetBitmap(idx);
CHECK(bmp2.HasAlpha() == true);
CHECK(bmp2.GetMask() == NULL);
CHECK(bmp2.GetWidth() == 32);
CHECK(bmp2.GetHeight() == 32);
idx = il.Add(bmpRGB, *wxRED);
CHECK(il.GetImageCount() == 3);
wxBitmap bmp3 = il.GetBitmap(idx);
CHECK(bmp3.HasAlpha() == true);
CHECK(bmp3.GetMask() == NULL);
CHECK(bmp3.GetWidth() == 32);
CHECK(bmp3.GetHeight() == 32);
}
SECTION("Add RGBA image to list")
{
il.RemoveAll();
int idx = il.Add(bmpRGBA);
CHECK(il.GetImageCount() == 1);
wxBitmap bmp1 = il.GetBitmap(idx);
CHECK(bmp1.HasAlpha() == true);
CHECK(bmp1.GetMask() == NULL);
CHECK(bmp1.GetWidth() == 32);
CHECK(bmp1.GetHeight() == 32);
idx = il.Add(bmpRGBAWithMask);
CHECK(il.GetImageCount() == 2);
wxBitmap bmp2 = il.GetBitmap(idx);
CHECK(bmp2.HasAlpha() == true);
CHECK(bmp2.GetMask() == NULL);
CHECK(bmp2.GetWidth() == 32);
CHECK(bmp2.GetHeight() == 32);
idx = il.Add(bmpRGBA, *wxRED);
CHECK(il.GetImageCount() == 3);
wxBitmap bmp3 = il.GetBitmap(idx);
CHECK(bmp3.HasAlpha() == true);
CHECK(bmp3.GetMask() == NULL);
CHECK(bmp3.GetWidth() == 32);
CHECK(bmp3.GetHeight() == 32);
}
SECTION("Add icon to list")
{
il.RemoveAll();
int idx = il.Add(ico);
CHECK(il.GetImageCount() == 1);
wxIcon icon1 = il.GetIcon(idx);
CHECK(icon1.GetWidth() == 32);
CHECK(icon1.GetHeight() == 32);
}
SECTION("Replace with RGB image")
{
il.RemoveAll();
int idx1 = il.Add(bmpRGBA);
CHECK(il.GetImageCount() == 1);
int idx2 = il.Add(bmpRGBAWithMask);
CHECK(il.GetImageCount() == 2);
il.Replace(idx1, bmpRGB);
il.Replace(idx2, bmpRGBWithMask);
wxBitmap bmp1 = il.GetBitmap(idx1);
CHECK(bmp1.HasAlpha() == false);
CHECK(bmp1.GetMask() == NULL);
CHECK(bmp1.GetWidth() == 32);
CHECK(bmp1.GetHeight() == 32);
wxBitmap bmp2 = il.GetBitmap(idx2);
CHECK(bmp2.HasAlpha() == true);
CHECK(bmp2.GetMask() == NULL);
CHECK(bmp2.GetWidth() == 32);
CHECK(bmp2.GetHeight() == 32);
}
SECTION("Replace with RGBA image")
{
il.RemoveAll();
int idx1 = il.Add(bmpRGB);
CHECK(il.GetImageCount() == 1);
int idx2 = il.Add(bmpRGBWithMask);
CHECK(il.GetImageCount() == 2);
il.Replace(idx1, bmpRGBA);
il.Replace(idx2, bmpRGBAWithMask);
wxBitmap bmp1 = il.GetBitmap(idx1);
CHECK(bmp1.HasAlpha() == true);
CHECK(bmp1.GetMask() == NULL);
CHECK(bmp1.GetWidth() == 32);
CHECK(bmp1.GetHeight() == 32);
wxBitmap bmp2 = il.GetBitmap(idx2);
CHECK(bmp2.HasAlpha() == true);
CHECK(bmp2.GetMask() == NULL);
CHECK(bmp2.GetWidth() == 32);
CHECK(bmp2.GetHeight() == 32);
}
}
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