+void MyCanvas::DrawWithLogicalOps(wxDC& dc)
+{
+ static const wxCoord w = 60;
+ static const wxCoord h = 60;
+
+ // reuse the text colour here
+ dc.SetPen(wxPen(m_owner->m_colourForeground, 1, wxSOLID));
+ dc.SetBrush(*wxTRANSPARENT_BRUSH);
+
+ size_t n;
+ for ( n = 0; n < WXSIZEOF(rasterOperations); n++ )
+ {
+ wxCoord x = 20 + 150*(n%4),
+ y = 20 + 100*(n/4);
+
+ dc.DrawText(rasterOperations[n].name, x, y - 20);
+ dc.SetLogicalFunction(rasterOperations[n].rop);
+ dc.DrawRectangle(x, y, w, h);
+ dc.DrawLine(x, y, x + w, y + h);
+ dc.DrawLine(x + w, y, x, y + h);
+ }
+
+ // now some filled rectangles
+ dc.SetBrush(wxBrush(m_owner->m_colourForeground, wxSOLID));
+
+ for ( n = 0; n < WXSIZEOF(rasterOperations); n++ )
+ {
+ wxCoord x = 20 + 150*(n%4),
+ y = 500 + 100*(n/4);
+
+ dc.DrawText(rasterOperations[n].name, x, y - 20);
+ dc.SetLogicalFunction(rasterOperations[n].rop);
+ dc.DrawRectangle(x, y, w, h);
+ }
+}
+
+void MyCanvas::DrawCircles(wxDC& dc)
+{
+ int x = 100,
+ y = 100,
+ r = 20;
+
+ dc.DrawText("Some circles", 0, y);
+ dc.DrawCircle(x, y, r);
+ dc.DrawCircle(x + 2*r, y, r);
+ dc.DrawCircle(x + 4*r, y, r);
+
+ y += 2*r;
+ dc.DrawText("And ellipses", 0, y);
+ dc.DrawEllipse(x - r, y, 2*r, r);
+ dc.DrawEllipse(x + r, y, 2*r, r);
+ dc.DrawEllipse(x + 3*r, y, 2*r, r);
+
+ y += 2*r;
+ dc.DrawText("And arcs", 0, y);
+ dc.DrawArc(x - r, y, x + r, y, x, y);
+ dc.DrawArc(x + 4*r, y, x + 2*r, y, x + 3*r, y);
+ dc.DrawArc(x + 5*r, y, x + 5*r, y, x + 6*r, y);
+
+ y += 2*r;
+ dc.DrawEllipticArc(x - r, y, 2*r, r, 0, 90);
+ dc.DrawEllipticArc(x + r, y, 2*r, r, 90, 180);
+ dc.DrawEllipticArc(x + 3*r, y, 2*r, r, 180, 270);
+ dc.DrawEllipticArc(x + 5*r, y, 2*r, r, 270, 360);
+}
+
+void MyCanvas::DrawRegions(wxDC& dc)
+{
+ dc.DrawText("You should see a red rect partly covered by a cyan one "
+ "on the left", 10, 5);
+ dc.DrawText("and 5 smileys from which 4 are partially clipped on the "
+ "right (2 copies should be identical)",
+ 10, 5 + dc.GetCharHeight());
+
+ DrawRegionsHelper(dc, 10);
+ DrawRegionsHelper(dc, 350);
+}
+
+void MyCanvas::DrawRegionsHelper(wxDC& dc, wxCoord x)
+{
+ dc.DestroyClippingRegion();
+ dc.SetBrush( *wxWHITE_BRUSH );
+ dc.SetPen( *wxTRANSPARENT_PEN );
+ dc.DrawRectangle( x,50,310,310 );
+
+ dc.SetClippingRegion( x+10,60,100,270 );
+
+ dc.SetBrush( *wxRED_BRUSH );
+ dc.DrawRectangle( x,50,310,310 );
+
+ dc.SetClippingRegion( x+10,60,100,100 );
+
+ dc.SetBrush( *wxCYAN_BRUSH );
+ dc.DrawRectangle( x,50,310,310 );
+
+ // when drawing the left half, destroy the clipping region, when drawing
+ // the right one - leave it
+ //
+ // normally it shouldn't make any difference as SetClippingRegion()
+ // replaces the old clipping region
+ if ( x < 300 )
+ dc.DestroyClippingRegion();
+ dc.SetClippingRegion( x+110,70,100,270 );
+
+ dc.SetBrush( *wxGREY_BRUSH );
+ dc.DrawRectangle( x,50,310,310 );
+
+ if (m_smile_bmp.Ok())
+ {
+ dc.DrawBitmap( m_smile_bmp, x+150, 200, TRUE );
+ dc.DrawBitmap( m_smile_bmp, x+130, 60, TRUE );
+ dc.DrawBitmap( m_smile_bmp, x+130, 330, TRUE );
+ dc.DrawBitmap( m_smile_bmp, x+100, 120, TRUE );
+ dc.DrawBitmap( m_smile_bmp, x+200, 120, TRUE );
+ }
+}
+
projects / wxWidgets.git / blobdiff