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wasm: validate kicad hi-dpi scaling

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This commit is contained in:
Viktor Vaczi 2026-03-22 12:48:05 +01:00
commit a49ed49d5d
12 changed files with 490 additions and 30 deletions
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109
tests/apps/standalone/retinascale/retinascale_test.cpp Normal file
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// Retina/HiDPI Scaling Test
// Verifies that bitmaps render at correct logical pixel sizes regardless of
// display scale factor. Icons should appear the same size on 1x and 2x displays.
#include "wx/wx.h"
#include "wx/dcmemory.h"
// Create a colored icon bitmap at the given size with scaleFactor=1.0
// (matching how KiCad creates toolbar icons via KiScaledBitmap)
wxBitmap CreateTestIcon(const wxColour& color, int size)
{
wxBitmap bmp(size, size);
wxMemoryDC dc(bmp);
dc.SetBackground(wxBrush(wxColour(240, 240, 240)));
dc.Clear();
dc.SetPen(wxPen(*wxBLACK, 1));
dc.SetBrush(wxBrush(color));
dc.DrawRectangle(1, 1, size - 2, size - 2);
// Draw a diagonal cross to make scaling visible
dc.SetPen(wxPen(color, 2));
dc.DrawLine(2, 2, size - 2, size - 2);
dc.DrawLine(size - 2, 2, 2, size - 2);
return bmp;
}
class RetinaScaleFrame : public wxFrame
{
public:
RetinaScaleFrame() : wxFrame(nullptr, wxID_ANY, "Retina Scale Test",
wxDefaultPosition, wxSize(800, 600))
{
// Log scale factor info
double contentSF = GetContentScaleFactor();
double dpiSF = GetDPIScaleFactor();
wxLogMessage("ContentScaleFactor: %.1f, DPIScaleFactor: %.1f", contentSF, dpiSF);
wxPanel* panel = new wxPanel(this);
wxBoxSizer* mainSizer = new wxBoxSizer(wxVERTICAL);
// Create a toolbar with icons at different sizes
wxToolBar* toolbar = CreateToolBar();
toolbar->SetName("toolbar");
wxBitmap icon16 = CreateTestIcon(*wxRED, 16);
wxBitmap icon24 = CreateTestIcon(*wxBLUE, 24);
wxBitmap icon32 = CreateTestIcon(*wxGREEN, 32);
toolbar->AddTool(1001, "Icon16", icon16, "16px icon");
toolbar->AddTool(1002, "Icon24", icon24, "24px icon");
toolbar->AddTool(1003, "Icon32", icon32, "32px icon");
toolbar->Realize();
// Info label
wxString info = wxString::Format(
"Scale: content=%.1f dpi=%.1f\n"
"Icons should be 16, 24, 32 logical pixels wide respectively.\n"
"Below: bitmap buttons with the same icons for comparison.",
contentSF, dpiSF);
wxStaticText* label = new wxStaticText(panel, wxID_ANY, info);
label->SetName("info");
mainSizer->Add(label, 0, wxALL, 10);
// Bitmap buttons row for comparison
wxBoxSizer* btnSizer = new wxBoxSizer(wxHORIZONTAL);
wxBitmapButton* btn16 = new wxBitmapButton(panel, wxID_ANY, icon16);
btn16->SetName("btn16");
btnSizer->Add(btn16, 0, wxALL, 5);
wxBitmapButton* btn24 = new wxBitmapButton(panel, wxID_ANY, icon24);
btn24->SetName("btn24");
btnSizer->Add(btn24, 0, wxALL, 5);
wxBitmapButton* btn32 = new wxBitmapButton(panel, wxID_ANY, icon32);
btn32->SetName("btn32");
btnSizer->Add(btn32, 0, wxALL, 5);
mainSizer->Add(btnSizer, 0, wxLEFT, 5);
// Reference line: a static text showing expected sizes
wxStaticText* refLabel = new wxStaticText(panel, wxID_ANY,
"If scaling is correct, the red icon above should be ~16px, "
"blue ~24px, green ~32px (logical pixels).");
refLabel->SetName("reference");
mainSizer->Add(refLabel, 0, wxALL, 10);
panel->SetSizer(mainSizer);
wxLogMessage("RetinaScaleFrame created successfully");
}
};
class RetinaScaleApp : public wxApp
{
public:
bool OnInit() override
{
RetinaScaleFrame* frame = new RetinaScaleFrame();
frame->Show(true);
return true;
}
};
wxIMPLEMENT_APP(RetinaScaleApp);