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Add a test of storing/restoring clipping regions with wxGraphicsContext.

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See #17626.
This commit is contained in:
Artur Wieczorek
2016-08-12 23:20:50 +02:00
parent d9193d5368
commit c9a8dbedc8
1 changed files with 99 additions and 11 deletions
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110
tests/graphics/clippingbox.cpp
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@@ -259,6 +259,7 @@ protected:
}
void OneRegionWithRotatedGC();
void RegionsAndPushPopStateGC();
private:
CPPUNIT_TEST_SUITE( ClippingBoxTestCaseGCDC );
@@ -287,6 +288,7 @@ private:
CPPUNIT_TEST( TwoDevRegionsOverlappingNegDim);
CPPUNIT_TEST( TwoDevRegionsNonOverlapping );
CPPUNIT_TEST( TwoDevRegionsNonOverlappingNegDim );
CPPUNIT_TEST( RegionsAndPushPopStateGC );
CPPUNIT_TEST_SUITE_END();
protected:
@@ -348,6 +350,7 @@ private:
CPPUNIT_TEST( TwoDevRegionsOverlappingNegDim);
CPPUNIT_TEST( TwoDevRegionsNonOverlapping );
CPPUNIT_TEST( TwoDevRegionsNonOverlappingNegDim );
CPPUNIT_TEST( RegionsAndPushPopStateGC );
CPPUNIT_TEST_SUITE_END();
protected:
@@ -413,6 +416,7 @@ private:
CPPUNIT_TEST( TwoDevRegionsOverlappingNegDim);
CPPUNIT_TEST( TwoDevRegionsNonOverlapping );
CPPUNIT_TEST( TwoDevRegionsNonOverlappingNegDim );
CPPUNIT_TEST( RegionsAndPushPopStateGC );
CPPUNIT_TEST_SUITE_END();
protected:
@@ -470,6 +474,7 @@ private:
CPPUNIT_TEST( TwoDevRegionsOverlappingNegDim);
CPPUNIT_TEST( TwoDevRegionsNonOverlapping );
CPPUNIT_TEST( TwoDevRegionsNonOverlappingNegDim );
CPPUNIT_TEST( RegionsAndPushPopStateGC );
CPPUNIT_TEST_SUITE_END();
protected:
@@ -1262,7 +1267,18 @@ void ClippingBoxTestCaseGCDC::OneRegionWithRotatedGC()
const int rectW = 60;
const int rectH = 55;
// Draw image with reference rectangle (rotated).
// Set clipping region for rotated wxGC.
wxGraphicsContext* gc = m_gcdc->GetGraphicsContext();
gc->SetAntialiasMode(wxANTIALIAS_NONE);
gc->DisableOffset();
gc->Rotate(rotAngle);
gc->Clip(rectX, rectY, rectW, rectH);
// Fill in clipping region.
gc->SetBrush(wxBrush(s_fgColour, wxBRUSHSTYLE_SOLID));
gc->DrawRectangle(-50, -50, s_dcSize.GetWidth()+100, s_dcSize.GetHeight()+100);
// Draw reference image with rotated rectangle which
// should look the same as rectangle drawn with Clip().
wxBitmap bmpRef(s_dcSize);
{
wxMemoryDC memDC(bmpRef);
@@ -1280,16 +1296,6 @@ void ClippingBoxTestCaseGCDC::OneRegionWithRotatedGC()
delete gcRef;
}
// Set clipping region for rotated wxGC.
wxGraphicsContext* gc = m_gcdc->GetGraphicsContext();
gc->SetAntialiasMode(wxANTIALIAS_NONE);
gc->DisableOffset();
gc->Rotate(rotAngle);
gc->Clip(rectX, rectY, rectW, rectH);
// Fill in clipping region.
gc->SetBrush(wxBrush(s_fgColour, wxBRUSHSTYLE_SOLID));
gc->DrawRectangle(-50, -50, s_dcSize.GetWidth()+100, s_dcSize.GetHeight()+100);
// Compare filled in clipping region with reference rectangle.
// Rotated rectangles created by clipping and drawing procedures
// can be slightly different (shifted by few pixels) due
@@ -1298,3 +1304,85 @@ void ClippingBoxTestCaseGCDC::OneRegionWithRotatedGC()
// tolerating some drift of the pixels.
CheckClipWithBitmap(bmpRef, 1);
}
void ClippingBoxTestCaseGCDC::RegionsAndPushPopStateGC()
{
// Setting muliple rectangular clipping regions
// for transformed wxGC and store/restore them.
// Set clipping regions and store/restore them.
wxGraphicsContext* gc = m_gcdc->GetGraphicsContext();
gc->SetAntialiasMode(wxANTIALIAS_NONE);
gc->DisableOffset();
gc->SetBrush(wxBrush(s_bgColour, wxBRUSHSTYLE_SOLID));
gc->SetPen(*wxTRANSPARENT_PEN);
gc->DrawRectangle(0, 0, s_dcSize.GetWidth(), s_dcSize.GetHeight());
gc->SetBrush(wxBrush(s_fgColour, wxBRUSHSTYLE_SOLID));
gc->SetPen(wxPen(s_fgColour));
gc->Translate(5, 5);
gc->Rotate(5*M_PI/180);
gc->Clip(20, 15, 50, 45);
gc->PushState();
gc->Rotate(5*M_PI/180);
gc->ResetClip();
gc->Clip(10, 5, 60, 15);
gc->PushState();
gc->Rotate(-15*M_PI/180);
gc->ResetClip();
gc->Clip(5, 10, 30, 35);
gc->DrawRectangle(-50, -50, s_dcSize.GetWidth()+100, s_dcSize.GetHeight()+100);
gc->PopState();
gc->DrawRectangle(-50, -50, s_dcSize.GetWidth()+100, s_dcSize.GetHeight()+100);
gc->PopState();
gc->DrawRectangle(-50, -50, s_dcSize.GetWidth()+100, s_dcSize.GetHeight()+100);
// Draw reference image with rotated rectangles which
// should look the same as rectangles drawn with Clip().
wxBitmap bmpRef(s_dcSize);
{
wxMemoryDC memDC(bmpRef);
wxGraphicsRenderer* r = m_gcdc->GetGraphicsContext()->GetRenderer();
wxGraphicsContext* gcRef = r->CreateContext(memDC);
gcRef->SetAntialiasMode(wxANTIALIAS_NONE);
gcRef->DisableOffset();
gcRef->SetBrush(wxBrush(s_bgColour, wxBRUSHSTYLE_SOLID));
gcRef->SetPen(*wxTRANSPARENT_PEN);
gcRef->DrawRectangle(0, 0, s_dcSize.GetWidth(), s_dcSize.GetHeight());
gcRef->SetBrush(wxBrush(s_fgColour, wxBRUSHSTYLE_SOLID));
gcRef->SetPen(wxPen(s_fgColour));
gcRef->Translate(5, 5);
gcRef->Rotate(5*M_PI/180);
gcRef->PushState();
gcRef->Rotate(5*M_PI/180);
gcRef->PushState();
gcRef->Rotate(-15*M_PI/180);
gcRef->DrawRectangle(5, 10, 30, 35);
gcRef->PopState();
gcRef->DrawRectangle(10, 5, 60, 15);
gcRef->PopState();
gcRef->DrawRectangle(20, 15, 50, 45);
delete gcRef;
}
// Compare filled in clipping regions with reference image.
// Rotated rectangles created by clipping and drawing procedures
// can be slightly different (shifted by few pixels) due
// to the different algorithms used for different operations
// so we need to perform a "fuzzy" comparison of the images,
// tolerating some drift of the pixels.
CheckClipWithBitmap(bmpRef, 1);
}