| /* |
| Simple DirectMedia Layer |
| Copyright (C) 1997-2016 Sam Lantinga <slouken@libsdl.org> |
| |
| This software is provided 'as-is', without any express or implied |
| warranty. In no event will the authors be held liable for any damages |
| arising from the use of this software. |
| |
| Permission is granted to anyone to use this software for any purpose, |
| including commercial applications, and to alter it and redistribute it |
| freely, subject to the following restrictions: |
| |
| 1. The origin of this software must not be misrepresented; you must not |
| claim that you wrote the original software. If you use this software |
| in a product, an acknowledgment in the product documentation would be |
| appreciated but is not required. |
| 2. Altered source versions must be plainly marked as such, and must not be |
| misrepresented as being the original software. |
| 3. This notice may not be removed or altered from any source distribution. |
| */ |
| #include "../../SDL_internal.h" |
| |
| #if SDL_VIDEO_DRIVER_WINDOWS |
| |
| #include "SDL_windowsvideo.h" |
| #include "../../../include/SDL_assert.h" |
| |
| /* Windows CE compatibility */ |
| #ifndef CDS_FULLSCREEN |
| #define CDS_FULLSCREEN 0 |
| #endif |
| |
| typedef struct _WIN_GetMonitorDPIData { |
| SDL_VideoData *vid_data; |
| SDL_DisplayMode *mode; |
| SDL_DisplayModeData *mode_data; |
| } WIN_GetMonitorDPIData; |
| |
| static BOOL CALLBACK |
| WIN_GetMonitorDPI(HMONITOR hMonitor, |
| HDC hdcMonitor, |
| LPRECT lprcMonitor, |
| LPARAM dwData) |
| { |
| WIN_GetMonitorDPIData *data = (WIN_GetMonitorDPIData*) dwData; |
| UINT hdpi, vdpi; |
| |
| if (data->vid_data->GetDpiForMonitor(hMonitor, MDT_EFFECTIVE_DPI, &hdpi, &vdpi) == S_OK && |
| hdpi > 0 && |
| vdpi > 0) { |
| float hsize, vsize; |
| |
| data->mode_data->HorzDPI = (float)hdpi; |
| data->mode_data->VertDPI = (float)vdpi; |
| |
| // Figure out the monitor size and compute the diagonal DPI. |
| hsize = data->mode->w / data->mode_data->HorzDPI; |
| vsize = data->mode->h / data->mode_data->VertDPI; |
| |
| data->mode_data->DiagDPI = SDL_ComputeDiagonalDPI( data->mode->w, |
| data->mode->h, |
| hsize, |
| vsize ); |
| |
| // We can only handle one DPI per display mode so end the enumeration. |
| return FALSE; |
| } |
| |
| // We didn't get DPI information so keep going. |
| return TRUE; |
| } |
| |
| static void |
| WIN_UpdateDisplayMode(_THIS, LPCTSTR deviceName, DWORD index, SDL_DisplayMode * mode) |
| { |
| SDL_VideoData *vid_data = (SDL_VideoData *) _this->driverdata; |
| SDL_DisplayModeData *data = (SDL_DisplayModeData *) mode->driverdata; |
| HDC hdc; |
| |
| data->DeviceMode.dmFields = |
| (DM_BITSPERPEL | DM_PELSWIDTH | DM_PELSHEIGHT | DM_DISPLAYFREQUENCY | |
| DM_DISPLAYFLAGS); |
| |
| if (index == ENUM_CURRENT_SETTINGS |
| && (hdc = CreateDC(deviceName, NULL, NULL, NULL)) != NULL) { |
| char bmi_data[sizeof(BITMAPINFOHEADER) + 256 * sizeof(RGBQUAD)]; |
| LPBITMAPINFO bmi; |
| HBITMAP hbm; |
| int logical_width = GetDeviceCaps( hdc, HORZRES ); |
| int logical_height = GetDeviceCaps( hdc, VERTRES ); |
| |
| data->ScaleX = (float)logical_width / data->DeviceMode.dmPelsWidth; |
| data->ScaleY = (float)logical_height / data->DeviceMode.dmPelsHeight; |
| mode->w = logical_width; |
| mode->h = logical_height; |
| |
| // WIN_GetMonitorDPI needs mode->w and mode->h |
| // so only call after those are set. |
| if (vid_data->GetDpiForMonitor) { |
| WIN_GetMonitorDPIData dpi_data; |
| RECT monitor_rect; |
| |
| dpi_data.vid_data = vid_data; |
| dpi_data.mode = mode; |
| dpi_data.mode_data = data; |
| monitor_rect.left = data->DeviceMode.dmPosition.x; |
| monitor_rect.top = data->DeviceMode.dmPosition.y; |
| monitor_rect.right = monitor_rect.left + 1; |
| monitor_rect.bottom = monitor_rect.top + 1; |
| EnumDisplayMonitors(NULL, &monitor_rect, WIN_GetMonitorDPI, (LPARAM)&dpi_data); |
| } else { |
| // We don't have the Windows 8.1 routine so just |
| // get system DPI. |
| data->HorzDPI = (float)GetDeviceCaps( hdc, LOGPIXELSX ); |
| data->VertDPI = (float)GetDeviceCaps( hdc, LOGPIXELSY ); |
| if (data->HorzDPI == data->VertDPI) { |
| data->DiagDPI = data->HorzDPI; |
| } else { |
| data->DiagDPI = SDL_ComputeDiagonalDPI( mode->w, |
| mode->h, |
| (float)GetDeviceCaps( hdc, HORZSIZE ) / 25.4f, |
| (float)GetDeviceCaps( hdc, VERTSIZE ) / 25.4f ); |
| } |
| } |
| |
| SDL_zero(bmi_data); |
| bmi = (LPBITMAPINFO) bmi_data; |
| bmi->bmiHeader.biSize = sizeof(BITMAPINFOHEADER); |
| |
| hbm = CreateCompatibleBitmap(hdc, 1, 1); |
| GetDIBits(hdc, hbm, 0, 1, NULL, bmi, DIB_RGB_COLORS); |
| GetDIBits(hdc, hbm, 0, 1, NULL, bmi, DIB_RGB_COLORS); |
| DeleteObject(hbm); |
| DeleteDC(hdc); |
| if (bmi->bmiHeader.biCompression == BI_BITFIELDS) { |
| switch (*(Uint32 *) bmi->bmiColors) { |
| case 0x00FF0000: |
| mode->format = SDL_PIXELFORMAT_RGB888; |
| break; |
| case 0x000000FF: |
| mode->format = SDL_PIXELFORMAT_BGR888; |
| break; |
| case 0xF800: |
| mode->format = SDL_PIXELFORMAT_RGB565; |
| break; |
| case 0x7C00: |
| mode->format = SDL_PIXELFORMAT_RGB555; |
| break; |
| } |
| } else if (bmi->bmiHeader.biBitCount == 8) { |
| mode->format = SDL_PIXELFORMAT_INDEX8; |
| } else if (bmi->bmiHeader.biBitCount == 4) { |
| mode->format = SDL_PIXELFORMAT_INDEX4LSB; |
| } |
| } else if (mode->format == SDL_PIXELFORMAT_UNKNOWN) { |
| /* FIXME: Can we tell what this will be? */ |
| if ((data->DeviceMode.dmFields & DM_BITSPERPEL) == DM_BITSPERPEL) { |
| switch (data->DeviceMode.dmBitsPerPel) { |
| case 32: |
| mode->format = SDL_PIXELFORMAT_RGB888; |
| break; |
| case 24: |
| mode->format = SDL_PIXELFORMAT_RGB24; |
| break; |
| case 16: |
| mode->format = SDL_PIXELFORMAT_RGB565; |
| break; |
| case 15: |
| mode->format = SDL_PIXELFORMAT_RGB555; |
| break; |
| case 8: |
| mode->format = SDL_PIXELFORMAT_INDEX8; |
| break; |
| case 4: |
| mode->format = SDL_PIXELFORMAT_INDEX4LSB; |
| break; |
| } |
| } |
| } |
| } |
| |
| static SDL_bool |
| WIN_GetDisplayMode(_THIS, LPCTSTR deviceName, DWORD index, SDL_DisplayMode * mode) |
| { |
| SDL_DisplayModeData *data; |
| DEVMODE devmode; |
| |
| devmode.dmSize = sizeof(devmode); |
| devmode.dmDriverExtra = 0; |
| if (!EnumDisplaySettings(deviceName, index, &devmode)) { |
| return SDL_FALSE; |
| } |
| |
| data = (SDL_DisplayModeData *) SDL_malloc(sizeof(*data)); |
| if (!data) { |
| return SDL_FALSE; |
| } |
| |
| mode->driverdata = data; |
| data->DeviceMode = devmode; |
| |
| /* Default basic information */ |
| data->ScaleX = 1.0f; |
| data->ScaleY = 1.0f; |
| data->DiagDPI = 0.0f; |
| data->HorzDPI = 0.0f; |
| data->VertDPI = 0.0f; |
| |
| mode->format = SDL_PIXELFORMAT_UNKNOWN; |
| mode->w = data->DeviceMode.dmPelsWidth; |
| mode->h = data->DeviceMode.dmPelsHeight; |
| mode->refresh_rate = data->DeviceMode.dmDisplayFrequency; |
| |
| /* Fill in the mode information */ |
| WIN_UpdateDisplayMode(_this, deviceName, index, mode); |
| return SDL_TRUE; |
| } |
| |
| static SDL_bool |
| WIN_AddDisplay(_THIS, LPTSTR DeviceName) |
| { |
| SDL_VideoDisplay display; |
| SDL_DisplayData *displaydata; |
| SDL_DisplayMode mode; |
| DISPLAY_DEVICE device; |
| |
| #ifdef DEBUG_MODES |
| printf("Display: %s\n", WIN_StringToUTF8(DeviceName)); |
| #endif |
| if (!WIN_GetDisplayMode(_this, DeviceName, ENUM_CURRENT_SETTINGS, &mode)) { |
| return SDL_FALSE; |
| } |
| |
| displaydata = (SDL_DisplayData *) SDL_malloc(sizeof(*displaydata)); |
| if (!displaydata) { |
| return SDL_FALSE; |
| } |
| SDL_memcpy(displaydata->DeviceName, DeviceName, |
| sizeof(displaydata->DeviceName)); |
| |
| SDL_zero(display); |
| device.cb = sizeof(device); |
| if (EnumDisplayDevices(DeviceName, 0, &device, 0)) { |
| display.name = WIN_StringToUTF8(device.DeviceString); |
| } |
| display.desktop_mode = mode; |
| display.current_mode = mode; |
| display.driverdata = displaydata; |
| SDL_AddVideoDisplay(&display); |
| SDL_free(display.name); |
| return SDL_TRUE; |
| } |
| |
| int |
| WIN_InitModes(_THIS) |
| { |
| int pass; |
| DWORD i, j, count; |
| DISPLAY_DEVICE device; |
| |
| device.cb = sizeof(device); |
| |
| /* Get the primary display in the first pass */ |
| for (pass = 0; pass < 2; ++pass) { |
| for (i = 0; ; ++i) { |
| TCHAR DeviceName[32]; |
| |
| if (!EnumDisplayDevices(NULL, i, &device, 0)) { |
| break; |
| } |
| if (!(device.StateFlags & DISPLAY_DEVICE_ATTACHED_TO_DESKTOP)) { |
| continue; |
| } |
| if (pass == 0) { |
| if (!(device.StateFlags & DISPLAY_DEVICE_PRIMARY_DEVICE)) { |
| continue; |
| } |
| } else { |
| if (device.StateFlags & DISPLAY_DEVICE_PRIMARY_DEVICE) { |
| continue; |
| } |
| } |
| SDL_memcpy(DeviceName, device.DeviceName, sizeof(DeviceName)); |
| #ifdef DEBUG_MODES |
| printf("Device: %s\n", WIN_StringToUTF8(DeviceName)); |
| #endif |
| count = 0; |
| for (j = 0; ; ++j) { |
| if (!EnumDisplayDevices(DeviceName, j, &device, 0)) { |
| break; |
| } |
| if (!(device.StateFlags & DISPLAY_DEVICE_ATTACHED_TO_DESKTOP)) { |
| continue; |
| } |
| if (pass == 0) { |
| if (!(device.StateFlags & DISPLAY_DEVICE_PRIMARY_DEVICE)) { |
| continue; |
| } |
| } else { |
| if (device.StateFlags & DISPLAY_DEVICE_PRIMARY_DEVICE) { |
| continue; |
| } |
| } |
| count += WIN_AddDisplay(_this, device.DeviceName); |
| } |
| if (count == 0) { |
| WIN_AddDisplay(_this, DeviceName); |
| } |
| } |
| } |
| if (_this->num_displays == 0) { |
| return SDL_SetError("No displays available"); |
| } |
| return 0; |
| } |
| |
| int |
| WIN_GetDisplayBounds(_THIS, SDL_VideoDisplay * display, SDL_Rect * rect) |
| { |
| SDL_DisplayModeData *data = (SDL_DisplayModeData *) display->current_mode.driverdata; |
| |
| rect->x = (int)SDL_ceil(data->DeviceMode.dmPosition.x * data->ScaleX); |
| rect->y = (int)SDL_ceil(data->DeviceMode.dmPosition.y * data->ScaleY); |
| rect->w = (int)SDL_ceil(data->DeviceMode.dmPelsWidth * data->ScaleX); |
| rect->h = (int)SDL_ceil(data->DeviceMode.dmPelsHeight * data->ScaleY); |
| |
| return 0; |
| } |
| |
| int |
| WIN_GetDisplayDPI(_THIS, SDL_VideoDisplay * display, float * ddpi, float * hdpi, float * vdpi) |
| { |
| SDL_DisplayModeData *data = (SDL_DisplayModeData *) display->current_mode.driverdata; |
| |
| if (ddpi) { |
| *ddpi = data->DiagDPI; |
| } |
| if (hdpi) { |
| *hdpi = data->HorzDPI; |
| } |
| if (vdpi) { |
| *vdpi = data->VertDPI; |
| } |
| |
| return data->DiagDPI != 0.0f ? 0 : SDL_SetError("Couldn't get DPI"); |
| } |
| |
| int |
| WIN_GetDisplayUsableBounds(_THIS, SDL_VideoDisplay * display, SDL_Rect * rect) |
| { |
| const SDL_DisplayModeData *data = (const SDL_DisplayModeData *) display->current_mode.driverdata; |
| const DEVMODE *pDevMode = &data->DeviceMode; |
| POINT pt = { |
| /* !!! FIXME: no scale, right? */ |
| (LONG) (pDevMode->dmPosition.x + (pDevMode->dmPelsWidth / 2)), |
| (LONG) (pDevMode->dmPosition.y + (pDevMode->dmPelsHeight / 2)) |
| }; |
| HMONITOR hmon = MonitorFromPoint(pt, MONITOR_DEFAULTTONULL); |
| MONITORINFO minfo; |
| const RECT *work; |
| BOOL rc = FALSE; |
| |
| SDL_assert(hmon != NULL); |
| |
| if (hmon != NULL) { |
| SDL_zero(minfo); |
| minfo.cbSize = sizeof (MONITORINFO); |
| rc = GetMonitorInfo(hmon, &minfo); |
| SDL_assert(rc); |
| } |
| |
| if (!rc) { |
| return SDL_SetError("Couldn't find monitor data"); |
| } |
| |
| work = &minfo.rcWork; |
| rect->x = (int)SDL_ceil(work->left * data->ScaleX); |
| rect->y = (int)SDL_ceil(work->top * data->ScaleY); |
| rect->w = (int)SDL_ceil((work->right - work->left) * data->ScaleX); |
| rect->h = (int)SDL_ceil((work->bottom - work->top) * data->ScaleY); |
| |
| return 0; |
| } |
| |
| void |
| WIN_GetDisplayModes(_THIS, SDL_VideoDisplay * display) |
| { |
| SDL_DisplayData *data = (SDL_DisplayData *) display->driverdata; |
| DWORD i; |
| SDL_DisplayMode mode; |
| |
| for (i = 0;; ++i) { |
| if (!WIN_GetDisplayMode(_this, data->DeviceName, i, &mode)) { |
| break; |
| } |
| if (SDL_ISPIXELFORMAT_INDEXED(mode.format)) { |
| /* We don't support palettized modes now */ |
| SDL_free(mode.driverdata); |
| continue; |
| } |
| if (mode.format != SDL_PIXELFORMAT_UNKNOWN) { |
| if (!SDL_AddDisplayMode(display, &mode)) { |
| SDL_free(mode.driverdata); |
| } |
| } else { |
| SDL_free(mode.driverdata); |
| } |
| } |
| } |
| |
| int |
| WIN_SetDisplayMode(_THIS, SDL_VideoDisplay * display, SDL_DisplayMode * mode) |
| { |
| SDL_DisplayData *displaydata = (SDL_DisplayData *) display->driverdata; |
| SDL_DisplayModeData *data = (SDL_DisplayModeData *) mode->driverdata; |
| LONG status; |
| |
| if (mode->driverdata == display->desktop_mode.driverdata) { |
| status = ChangeDisplaySettingsEx(displaydata->DeviceName, NULL, NULL, CDS_FULLSCREEN, NULL); |
| } else { |
| status = ChangeDisplaySettingsEx(displaydata->DeviceName, &data->DeviceMode, NULL, CDS_FULLSCREEN, NULL); |
| } |
| if (status != DISP_CHANGE_SUCCESSFUL) { |
| const char *reason = "Unknown reason"; |
| switch (status) { |
| case DISP_CHANGE_BADFLAGS: |
| reason = "DISP_CHANGE_BADFLAGS"; |
| break; |
| case DISP_CHANGE_BADMODE: |
| reason = "DISP_CHANGE_BADMODE"; |
| break; |
| case DISP_CHANGE_BADPARAM: |
| reason = "DISP_CHANGE_BADPARAM"; |
| break; |
| case DISP_CHANGE_FAILED: |
| reason = "DISP_CHANGE_FAILED"; |
| break; |
| } |
| return SDL_SetError("ChangeDisplaySettingsEx() failed: %s", reason); |
| } |
| EnumDisplaySettings(displaydata->DeviceName, ENUM_CURRENT_SETTINGS, &data->DeviceMode); |
| WIN_UpdateDisplayMode(_this, displaydata->DeviceName, ENUM_CURRENT_SETTINGS, mode); |
| return 0; |
| } |
| |
| void |
| WIN_QuitModes(_THIS) |
| { |
| /* All fullscreen windows should have restored modes by now */ |
| } |
| |
| #endif /* SDL_VIDEO_DRIVER_WINDOWS */ |
| |
| /* vi: set ts=4 sw=4 expandtab: */ |
