UserImage.cpp

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/*  SPDX-License-Identifier: GPL-2.0-or-later */
/*!********************************************************************
 
  Audacity: A Digital Audio Editor
 
  UserImage.cpp
 
  Dmitry Vedenko
 
**********************************************************************/
#include "UserImage.h"
 
#include <memory>
 
#include <wx/dcbuffer.h>
#include <wx/graphics.h>
 
namespace audacity::cloud::audiocom
{
 
UserImage::UserImage(wxWindow* parent, const wxSize& size)
    : wxPanelWrapper(parent, wxID_ANY, wxDefaultPosition, size, wxBORDER_NONE)
{
   SetBackgroundStyle(wxBG_STYLE_PAINT);
 
   SetMinSize(size);
   SetMaxSize(size);
 
   Bind(wxEVT_PAINT, [this](auto&) { OnPaint(); });
}
 
void UserImage::SetBitmap(const wxBitmap& bitmap)
{
   mBitmap = bitmap;
   Refresh(true);
}
 
void UserImage::SetBitmap(const wxString& path)
{
   wxImage image(path);
 
   if (image.IsOk())
   {
      mBitmap = wxBitmap(image);
      Refresh(true);
   }
}
 
void UserImage::OnPaint()
{
   wxAutoBufferedPaintDC dc(this);
   std::unique_ptr<wxGraphicsContext> gc(wxGraphicsContext::Create(dc));
 
   gc->SetInterpolationQuality(wxINTERPOLATION_BEST);
 
   const wxSize size = GetSize();
 
   gc->SetBrush(wxBrush(GetBackgroundColour()));
   gc->DrawRectangle(0, 0, size.x, size.y);
 
   if (!mBitmap.IsOk())
   {
      gc->SetBrush(wxBrush(wxColour(255, 255, 255, 255)));
      gc->DrawEllipse(0, 0, size.x, size.y);
   }
   else
   {
      const wxSize resultingImageSize { std::min(size.x, mBitmap.GetWidth()),
                                        std::min(size.y, mBitmap.GetHeight()) };
 
      gc->DrawBitmap(
         mBitmap,
         (size.x - resultingImageSize.x) / 2,
         (size.y - resultingImageSize.y) / 2,
         resultingImageSize.x,
         resultingImageSize.y);
 
      auto path = gc->CreatePath();
 
      path.MoveToPoint(0, 0);
      path.AddLineToPoint(size.x / 2, 0);
      path.AddArc(size.x / 2, size.y / 2, size.x / 2, 3 * M_PI_2, M_PI, false);
      path.CloseSubpath();
 
      path.MoveToPoint(size.x, 0);
      path.AddLineToPoint(size.x, size.y / 2);
      path.AddArc(size.x / 2, size.y / 2, size.x / 2, 0, 3 * M_PI_2, false);
      path.CloseSubpath();
 
      path.MoveToPoint(size.x, size.y);
      path.AddLineToPoint(size.x / 2, size.y);
      path.AddArc(size.x / 2, size.y / 2, size.x / 2, M_PI_2, 0, false);
      path.CloseSubpath();
 
      path.MoveToPoint(0, size.y);
      path.AddLineToPoint(0, size.y / 2);
      path.AddArc(size.x / 2, size.y / 2, size.x / 2, M_PI, M_PI_2, false);
      path.CloseSubpath();
 
      gc->DrawPath(path);
   }
}
 
} // namespace audacity::cloud::audiocom