| /* |
| Simple DirectMedia Layer |
| Copyright (C) 1997-2014 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" |
| |
| /* Windows CE compatibility */ |
| #ifndef CDS_FULLSCREEN |
| #define CDS_FULLSCREEN 0 |
| #endif |
| |
| static SDL_bool |
| WIN_GetDisplayMode(LPCTSTR deviceName, DWORD index, SDL_DisplayMode * mode) |
| { |
| SDL_DisplayModeData *data; |
| DEVMODE devmode; |
| HDC hdc; |
| |
| 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; |
| } |
| data->DeviceMode = devmode; |
| data->DeviceMode.dmFields = |
| (DM_BITSPERPEL | DM_PELSWIDTH | DM_PELSHEIGHT | DM_DISPLAYFREQUENCY | |
| DM_DISPLAYFLAGS); |
| data->ScaleX = 1.0f; |
| data->ScaleY = 1.0f; |
| |
| /* Fill in the mode information */ |
| mode->format = SDL_PIXELFORMAT_UNKNOWN; |
| mode->w = devmode.dmPelsWidth; |
| mode->h = devmode.dmPelsHeight; |
| mode->refresh_rate = devmode.dmDisplayFrequency; |
| mode->driverdata = data; |
| |
| 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 / devmode.dmPelsWidth; |
| data->ScaleY = (float)logical_height / devmode.dmPelsHeight; |
| mode->w = logical_width; |
| mode->h = logical_height; |
| |
| 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 { |
| /* FIXME: Can we tell what this will be? */ |
| if ((devmode.dmFields & DM_BITSPERPEL) == DM_BITSPERPEL) { |
| switch (devmode.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; |
| } |
| } |
| } |
| return SDL_TRUE; |
| } |
| |
| static SDL_bool |
| WIN_AddDisplay(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(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(device.DeviceName); |
| } |
| if (count == 0) { |
| WIN_AddDisplay(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; |
| } |
| |
| 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(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; |
| |
| 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); |
| 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: */ |
