mirror of
https://github.com/RetroDECK/Duckstation.git
synced 2024-10-23 23:55:42 +00:00
107 lines
2.7 KiB
C++
107 lines
2.7 KiB
C++
#include "sdl_util.h"
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#include "common/log.h"
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#include <SDL_syswm.h>
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Log_SetChannel(SDLUtil);
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#ifdef __APPLE__
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#include <objc/message.h>
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struct NSView;
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static NSView* GetContentViewFromWindow(NSWindow* window)
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{
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// window.contentView
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return reinterpret_cast<NSView* (*)(id, SEL)>(objc_msgSend)(reinterpret_cast<id>(window), sel_getUid("contentView"));
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}
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#endif
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namespace SDLUtil {
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std::optional<WindowInfo> GetWindowInfoForSDLWindow(SDL_Window* window)
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{
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SDL_SysWMinfo syswm = {};
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SDL_VERSION(&syswm.version);
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if (!SDL_GetWindowWMInfo(window, &syswm))
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{
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Log_ErrorPrintf("SDL_GetWindowWMInfo failed");
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return std::nullopt;
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}
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int window_width, window_height;
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SDL_GetWindowSize(window, &window_width, &window_height);
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WindowInfo wi;
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wi.surface_width = static_cast<u32>(window_width);
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wi.surface_height = static_cast<u32>(window_height);
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wi.surface_scale = GetDPIScaleFactor(window);
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wi.surface_format = WindowInfo::SurfaceFormat::RGB8;
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switch (syswm.subsystem)
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{
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#ifdef SDL_VIDEO_DRIVER_WINDOWS
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case SDL_SYSWM_WINDOWS:
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wi.type = WindowInfo::Type::Win32;
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wi.window_handle = syswm.info.win.window;
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break;
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#endif
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#ifdef SDL_VIDEO_DRIVER_COCOA
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case SDL_SYSWM_COCOA:
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wi.type = WindowInfo::Type::MacOS;
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wi.window_handle = GetContentViewFromWindow(syswm.info.cocoa.window);
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break;
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#endif
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#ifdef SDL_VIDEO_DRIVER_X11
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case SDL_SYSWM_X11:
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wi.type = WindowInfo::Type::X11;
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wi.window_handle = reinterpret_cast<void*>(static_cast<uintptr_t>(syswm.info.x11.window));
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wi.display_connection = syswm.info.x11.display;
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break;
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#endif
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#ifdef SDL_VIDEO_DRIVER_WAYLAND
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case SDL_SYSWM_WAYLAND:
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wi.type = WindowInfo::Type::Wayland;
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wi.window_handle = syswm.info.wl.surface;
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wi.display_connection = syswm.info.wl.display;
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break;
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#endif
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default:
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Log_ErrorPrintf("Unhandled syswm subsystem %u", static_cast<u32>(syswm.subsystem));
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return std::nullopt;
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}
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return wi;
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}
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float GetDPIScaleFactor(SDL_Window* window)
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{
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#ifdef __APPLE__
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static constexpr float DEFAULT_DPI = 72.0f;
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#else
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static constexpr float DEFAULT_DPI = 96.0f;
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#endif
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if (!window)
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{
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SDL_Window* dummy_window = SDL_CreateWindow("", SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED, 1, 1,
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SDL_WINDOW_ALLOW_HIGHDPI | SDL_WINDOW_HIDDEN);
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if (!dummy_window)
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return 1.0f;
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const float scale = GetDPIScaleFactor(dummy_window);
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SDL_DestroyWindow(dummy_window);
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return scale;
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}
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int display_index = SDL_GetWindowDisplayIndex(window);
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float display_dpi = DEFAULT_DPI;
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if (SDL_GetDisplayDPI(display_index, &display_dpi, nullptr, nullptr) != 0)
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return 1.0f;
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return display_dpi / DEFAULT_DPI;
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}
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} // namespace SDLUtil
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