AuroraMiddleware/wxWidgets
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Modified drawing sample to use wxGraphicsContext::GetTextExtent function.

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Use GetTextExtent function to centrally align a bitmap to the text label (on Graphics screen).
This commit is contained in:
Artur Wieczorek 2016-03-25 23:14:17 +01:00
parent f38485afa5
commit 16f111d007
1 changed files with 9 additions and 3 deletions
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12
samples/drawing/drawing.cpp
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@ -1168,9 +1168,15 @@ void MyCanvas::DrawGraphics(wxGraphicsContext* gc)
gc->PushState();
gc->Translate(60, 400);
gc->DrawText("Scaled smiley inside a square", 0, 0);
gc->DrawRectangle(BASE2, BASE2, 100, 100);
gc->DrawBitmap(m_smile_bmp, BASE2, BASE2, 100, 100);
const wxString labelText(wxS("Scaled smiley inside a square"));
gc->DrawText(labelText, 0, 0);
// Center a bitmap horizontally
wxDouble textWidth;
gc->GetTextExtent(labelText, &textWidth, NULL);
const wxDouble rectWidth = 100;
wxDouble x0 = (textWidth - rectWidth) / 2;
gc->DrawRectangle(x0, BASE2, rectWidth, 100);
gc->DrawBitmap(m_smile_bmp, x0, BASE2, rectWidth, 100);
gc->PopState();
// Draw graphics bitmap and its subbitmap