SDL3/sdl_window.cpp

 
#include <limits>
#include <sstream>
 
#include "sdl_window.hpp"
#include "sdl_utils.hpp"
 
SdlWindow::SdlWindow(SDL_DisplayID id, const std::string& title, const SDL_Rect& rect,
                     [[maybe_unused]] Uint32 flags)
    : _displayID(id)
{
  auto props = SDL_CreateProperties();
  SDL_SetStringProperty(props, SDL_PROP_WINDOW_CREATE_TITLE_STRING, title.c_str());
  SDL_SetNumberProperty(props, SDL_PROP_WINDOW_CREATE_X_NUMBER, rect.x);
  SDL_SetNumberProperty(props, SDL_PROP_WINDOW_CREATE_Y_NUMBER, rect.y);
  SDL_SetNumberProperty(props, SDL_PROP_WINDOW_CREATE_WIDTH_NUMBER, rect.w);
  SDL_SetNumberProperty(props, SDL_PROP_WINDOW_CREATE_HEIGHT_NUMBER, rect.h);
 
  if (flags & SDL_WINDOW_HIGH_PIXEL_DENSITY)
    SDL_SetBooleanProperty(props, SDL_PROP_WINDOW_CREATE_HIGH_PIXEL_DENSITY_BOOLEAN, true);
 
  if (flags & SDL_WINDOW_FULLSCREEN)
    SDL_SetBooleanProperty(props, SDL_PROP_WINDOW_CREATE_FULLSCREEN_BOOLEAN, true);
 
  if (flags & SDL_WINDOW_BORDERLESS)
    SDL_SetBooleanProperty(props, SDL_PROP_WINDOW_CREATE_BORDERLESS_BOOLEAN, true);
 
  _window = SDL_CreateWindowWithProperties(props);
  SDL_DestroyProperties(props);
 
  auto sc = scale();
  const int iscale = static_cast<int>(sc * 100.0f);
  auto w = 100 * rect.w / iscale;
  auto h = 100 * rect.h / iscale;
  std::ignore = resize({ w, h });
  SDL_SetHint(SDL_HINT_APP_NAME, "");
  std::ignore = SDL_SyncWindow(_window);
}
 
SdlWindow::SdlWindow(SdlWindow&& other) noexcept
    : _window(other._window), _displayID(other._displayID), _offset_x(other._offset_x),
      _offset_y(other._offset_y)
{
  other._window = nullptr;
}
 
SdlWindow::~SdlWindow()
{
  SDL_DestroyWindow(_window);
}
 
SDL_WindowID SdlWindow::id() const
{
  if (!_window)
    return 0;
  return SDL_GetWindowID(_window);
}
 
SDL_DisplayID SdlWindow::displayIndex() const
{
  if (!_window)
    return 0;
  return SDL_GetDisplayForWindow(_window);
}
 
SDL_Rect SdlWindow::rect() const
{
  SDL_Rect rect = {};
  if (_window)
  {
    SDL_GetWindowPosition(_window, &rect.x, &rect.y);
    SDL_GetWindowSizeInPixels(_window, &rect.w, &rect.h);
  }
  return rect;
}
 
SDL_Rect SdlWindow::bounds() const
{
  SDL_Rect rect = {};
  if (_window)
  {
    SDL_GetWindowPosition(_window, &rect.x, &rect.y);
    SDL_GetWindowSize(_window, &rect.w, &rect.h);
  }
  return rect;
}
 
SDL_Window* SdlWindow::window() const
{
  return _window;
}
 
Sint32 SdlWindow::offsetX() const
{
  return _offset_x;
}
 
void SdlWindow::setOffsetX(Sint32 x)
{
  _offset_x = x;
}
 
void SdlWindow::setOffsetY(Sint32 y)
{
  _offset_y = y;
}
 
Sint32 SdlWindow::offsetY() const
{
  return _offset_y;
}
 
rdpMonitor SdlWindow::monitor(bool isPrimary) const
{
  rdpMonitor mon{};
 
  const auto factor = scale();
  const auto dsf = static_cast<UINT32>(100 * factor);
  mon.attributes.desktopScaleFactor = dsf;
  mon.attributes.deviceScaleFactor = 100;
 
  const auto r = rect();
  mon.width = r.w;
  mon.height = r.h;
 
  mon.attributes.physicalWidth = WINPR_ASSERTING_INT_CAST(uint32_t, r.w);
  mon.attributes.physicalHeight = WINPR_ASSERTING_INT_CAST(uint32_t, r.h);
 
  SDL_Rect rect = {};
  auto did = SDL_GetDisplayForWindow(_window);
  auto rc = SDL_GetDisplayBounds(did, &rect);
 
  if (rc)
  {
    mon.x = rect.x;
    mon.y = rect.y;
  }
 
  const auto orient = orientation();
  mon.attributes.orientation = sdl::utils::orientaion_to_rdp(orient);
 
  auto primary = SDL_GetPrimaryDisplay();
  mon.is_primary = isPrimary || (SDL_GetWindowID(_window) == primary);
  mon.orig_screen = did;
  if (mon.is_primary)
  {
    mon.x = 0;
    mon.y = 0;
  }
  return mon;
}
 
float SdlWindow::scale() const
{
  return SDL_GetWindowDisplayScale(_window);
}
 
SDL_DisplayOrientation SdlWindow::orientation() const
{
  const auto did = displayIndex();
  return SDL_GetCurrentDisplayOrientation(did);
}
 
bool SdlWindow::grabKeyboard(bool enable)
{
  if (!_window)
    return false;
  SDL_SetWindowKeyboardGrab(_window, enable);
  return true;
}
 
bool SdlWindow::grabMouse(bool enable)
{
  if (!_window)
    return false;
  SDL_SetWindowMouseGrab(_window, enable);
  return true;
}
 
void SdlWindow::setBordered(bool bordered)
{
  if (_window)
    SDL_SetWindowBordered(_window, bordered);
  std::ignore = SDL_SyncWindow(_window);
}
 
void SdlWindow::raise()
{
  SDL_RaiseWindow(_window);
  std::ignore = SDL_SyncWindow(_window);
}
 
void SdlWindow::resizeable(bool use)
{
  SDL_SetWindowResizable(_window, use);
  std::ignore = SDL_SyncWindow(_window);
}
 
void SdlWindow::fullscreen(bool enter, bool forceOriginalDisplay)
{
  if (enter && forceOriginalDisplay && _displayID != 0)
  {
    /* Move the window to the desired display. We should not wait
     * for the window to be moved, because some backends can refuse
     * the move. The intent of moving the window is enough for SDL
     * to decide which display will be used for fullscreen. */
    SDL_Rect rect = {};
    std::ignore = SDL_GetDisplayBounds(_displayID, &rect);
    std::ignore = SDL_SetWindowPosition(_window, rect.x, rect.y);
  }
  std::ignore = SDL_SetWindowFullscreen(_window, enter);
  std::ignore = SDL_SyncWindow(_window);
}
 
void SdlWindow::minimize()
{
  SDL_MinimizeWindow(_window);
  std::ignore = SDL_SyncWindow(_window);
}
 
bool SdlWindow::resize(const SDL_Point& size)
{
  return SDL_SetWindowSize(_window, size.x, size.y);
}
 
bool SdlWindow::drawRect(SDL_Surface* surface, SDL_Point offset, const SDL_Rect& srcRect)
{
  WINPR_ASSERT(surface);
  SDL_Rect dstRect = { offset.x + srcRect.x, offset.y + srcRect.y, srcRect.w, srcRect.h };
  return blit(surface, srcRect, dstRect);
}
 
bool SdlWindow::drawRects(SDL_Surface* surface, SDL_Point offset,
                          const std::vector<SDL_Rect>& rects)
{
  if (rects.empty())
  {
    return drawRect(surface, offset, { 0, 0, surface->w, surface->h });
  }
  for (auto& srcRect : rects)
  {
    if (!drawRect(surface, offset, srcRect))
      return false;
  }
  return true;
}
 
bool SdlWindow::drawScaledRect(SDL_Surface* surface, const SDL_FPoint& scale,
                               const SDL_Rect& srcRect)
{
  SDL_Rect dstRect = srcRect;
  dstRect.x = static_cast<Sint32>(static_cast<float>(dstRect.x) * scale.x);
  dstRect.w = static_cast<Sint32>(static_cast<float>(dstRect.w) * scale.x);
  dstRect.y = static_cast<Sint32>(static_cast<float>(dstRect.y) * scale.y);
  dstRect.h = static_cast<Sint32>(static_cast<float>(dstRect.h) * scale.y);
  return blit(surface, srcRect, dstRect);
}
 
bool SdlWindow::drawScaledRects(SDL_Surface* surface, const SDL_FPoint& scale,
                                const std::vector<SDL_Rect>& rects)
{
  if (rects.empty())
  {
    return drawScaledRect(surface, scale, { 0, 0, surface->w, surface->h });
  }
  for (const auto& srcRect : rects)
  {
    if (!drawScaledRect(surface, scale, srcRect))
      return false;
  }
  return true;
}
 
bool SdlWindow::fill(Uint8 r, Uint8 g, Uint8 b, Uint8 a)
{
  auto surface = SDL_GetWindowSurface(_window);
  if (!surface)
    return false;
  SDL_Rect rect = { 0, 0, surface->w, surface->h };
  auto color = SDL_MapSurfaceRGBA(surface, r, g, b, a);
 
  SDL_FillSurfaceRect(surface, &rect, color);
  return true;
}
 
bool SdlWindow::blit(SDL_Surface* surface, const SDL_Rect& srcRect, SDL_Rect& dstRect)
{
  auto screen = SDL_GetWindowSurface(_window);
  if (!screen || !surface)
    return false;
  if (!SDL_SetSurfaceClipRect(surface, &srcRect))
    return true;
  if (!SDL_SetSurfaceClipRect(screen, &dstRect))
    return true;
  if (!SDL_BlitSurfaceScaled(surface, &srcRect, screen, &dstRect, SDL_SCALEMODE_LINEAR))
  {
    SDL_LogError(SDL_LOG_CATEGORY_RENDER, "SDL_BlitScaled: %s", SDL_GetError());
    return false;
  }
  return true;
}
 
void SdlWindow::updateSurface()
{
  SDL_UpdateWindowSurface(_window);
}
 
SdlWindow SdlWindow::create(SDL_DisplayID id, const std::string& title, Uint32 flags, Uint32 width,
                            Uint32 height)
{
  flags |= SDL_WINDOW_HIGH_PIXEL_DENSITY;
 
  SDL_Rect rect = { static_cast<int>(SDL_WINDOWPOS_CENTERED_DISPLAY(id)),
                  static_cast<int>(SDL_WINDOWPOS_CENTERED_DISPLAY(id)), static_cast<int>(width),
                  static_cast<int>(height) };
 
  if ((flags & SDL_WINDOW_FULLSCREEN) != 0)
  {
    std::ignore = SDL_GetDisplayBounds(id, &rect);
  }
 
  SdlWindow window{ id, title, rect, flags };
 
  if ((flags & (SDL_WINDOW_FULLSCREEN)) != 0)
  {
    window.setOffsetX(rect.x);
    window.setOffsetY(rect.y);
  }
 
  return window;
}