PowerToys/src/common/d2d_text.cpp

#include "pch.h"
#include "d2d_text.h"

D2DText::D2DText(float text_size, float scale) {
  winrt::check_hresult(DWriteCreateFactory(DWRITE_FACTORY_TYPE_SHARED, __uuidof(factory), reinterpret_cast<IUnknown**>(factory.put_void())));
  resize(text_size, scale);
  winrt::check_hresult(format->SetTextAlignment(DWRITE_TEXT_ALIGNMENT_CENTER));
  winrt::check_hresult(format->SetParagraphAlignment(DWRITE_PARAGRAPH_ALIGNMENT_CENTER));
}

D2DText & D2DText::resize(float text_size, float scale) {
  format = nullptr;
  winrt::check_hresult(factory->CreateTextFormat(L"Segoe UI",
                       nullptr,
                       DWRITE_FONT_WEIGHT_NORMAL,
                       DWRITE_FONT_STYLE_NORMAL,
                       DWRITE_FONT_STRETCH_NORMAL,
                       text_size * scale,
                       L"en-us",
                       format.put()));
  winrt::check_hresult(format->SetParagraphAlignment(DWRITE_PARAGRAPH_ALIGNMENT_CENTER));
  return *this;
}

D2DText & D2DText::set_aligment_left() {
  winrt::check_hresult(format->SetTextAlignment(DWRITE_TEXT_ALIGNMENT_LEADING));
  return *this;
}

D2DText & D2DText::set_aligment_center() {
  winrt::check_hresult(format->SetTextAlignment(DWRITE_TEXT_ALIGNMENT_CENTER));
  return *this;
}

D2DText & D2DText::set_aligment_right() {
  winrt::check_hresult(format->SetTextAlignment(DWRITE_TEXT_ALIGNMENT_TRAILING));
  return *this;
}

void D2DText::write(ID2D1DeviceContext5 * d2d_dc, D2D1_COLOR_F color, D2D1_RECT_F rect, std::wstring text) {
  winrt::com_ptr<ID2D1SolidColorBrush> brush;
  d2d_dc->CreateSolidColorBrush(color, brush.put());
  d2d_dc->DrawText(text.c_str(),
                  (UINT32)text.length(),
                  format.get(),
                  rect,
                  brush.get());
}