mirror of
https://github.com/love2d/megasource.git
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Add SDL2.0.1-3742e768b536.
Note: using the same folder for future updates.
This commit is contained in:
rude
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/*
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Simple DirectMedia Layer
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Copyright (C) 1997-2014 Sam Lantinga <slouken@libsdl.org>
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This software is provided 'as-is', without any express or implied
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warranty. In no event will the authors be held liable for any damages
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arising from the use of this software.
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Permission is granted to anyone to use this software for any purpose,
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including commercial applications, and to alter it and redistribute it
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freely, subject to the following restrictions:
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1. The origin of this software must not be misrepresented; you must not
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claim that you wrote the original software. If you use this software
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in a product, an acknowledgment in the product documentation would be
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appreciated but is not required.
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2. Altered source versions must be plainly marked as such, and must not be
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misrepresented as being the original software.
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3. This notice may not be removed or altered from any source distribution.
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*/
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#include "../../SDL_internal.h"
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#if SDL_VIDEO_DRIVER_WINDOWS
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#include "SDL_windowsvideo.h"
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/* Windows CE compatibility */
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#ifndef CDS_FULLSCREEN
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#define CDS_FULLSCREEN 0
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#endif
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static SDL_bool
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WIN_GetDisplayMode(LPCTSTR deviceName, DWORD index, SDL_DisplayMode * mode)
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{
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SDL_DisplayModeData *data;
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DEVMODE devmode;
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HDC hdc;
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devmode.dmSize = sizeof(devmode);
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devmode.dmDriverExtra = 0;
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if (!EnumDisplaySettings(deviceName, index, &devmode)) {
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return SDL_FALSE;
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}
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data = (SDL_DisplayModeData *) SDL_malloc(sizeof(*data));
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if (!data) {
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return SDL_FALSE;
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}
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data->DeviceMode = devmode;
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data->DeviceMode.dmFields =
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(DM_BITSPERPEL | DM_PELSWIDTH | DM_PELSHEIGHT | DM_DISPLAYFREQUENCY |
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DM_DISPLAYFLAGS);
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data->ScaleX = 1.0f;
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data->ScaleY = 1.0f;
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/* Fill in the mode information */
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mode->format = SDL_PIXELFORMAT_UNKNOWN;
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mode->w = devmode.dmPelsWidth;
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mode->h = devmode.dmPelsHeight;
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mode->refresh_rate = devmode.dmDisplayFrequency;
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mode->driverdata = data;
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if (index == ENUM_CURRENT_SETTINGS
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&& (hdc = CreateDC(deviceName, NULL, NULL, NULL)) != NULL) {
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char bmi_data[sizeof(BITMAPINFOHEADER) + 256 * sizeof(RGBQUAD)];
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LPBITMAPINFO bmi;
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HBITMAP hbm;
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int logical_width = GetDeviceCaps( hdc, HORZRES );
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int logical_height = GetDeviceCaps( hdc, VERTRES );
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data->ScaleX = (float)logical_width / devmode.dmPelsWidth;
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data->ScaleY = (float)logical_height / devmode.dmPelsHeight;
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mode->w = logical_width;
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mode->h = logical_height;
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SDL_zero(bmi_data);
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bmi = (LPBITMAPINFO) bmi_data;
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bmi->bmiHeader.biSize = sizeof(BITMAPINFOHEADER);
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hbm = CreateCompatibleBitmap(hdc, 1, 1);
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GetDIBits(hdc, hbm, 0, 1, NULL, bmi, DIB_RGB_COLORS);
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GetDIBits(hdc, hbm, 0, 1, NULL, bmi, DIB_RGB_COLORS);
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DeleteObject(hbm);
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DeleteDC(hdc);
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if (bmi->bmiHeader.biCompression == BI_BITFIELDS) {
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switch (*(Uint32 *) bmi->bmiColors) {
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case 0x00FF0000:
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mode->format = SDL_PIXELFORMAT_RGB888;
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break;
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case 0x000000FF:
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mode->format = SDL_PIXELFORMAT_BGR888;
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break;
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case 0xF800:
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mode->format = SDL_PIXELFORMAT_RGB565;
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break;
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case 0x7C00:
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mode->format = SDL_PIXELFORMAT_RGB555;
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break;
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}
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} else if (bmi->bmiHeader.biBitCount == 8) {
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mode->format = SDL_PIXELFORMAT_INDEX8;
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} else if (bmi->bmiHeader.biBitCount == 4) {
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mode->format = SDL_PIXELFORMAT_INDEX4LSB;
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}
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} else {
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/* FIXME: Can we tell what this will be? */
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if ((devmode.dmFields & DM_BITSPERPEL) == DM_BITSPERPEL) {
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switch (devmode.dmBitsPerPel) {
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case 32:
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mode->format = SDL_PIXELFORMAT_RGB888;
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break;
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case 24:
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mode->format = SDL_PIXELFORMAT_RGB24;
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break;
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case 16:
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mode->format = SDL_PIXELFORMAT_RGB565;
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break;
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case 15:
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mode->format = SDL_PIXELFORMAT_RGB555;
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break;
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case 8:
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mode->format = SDL_PIXELFORMAT_INDEX8;
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break;
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case 4:
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mode->format = SDL_PIXELFORMAT_INDEX4LSB;
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break;
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}
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}
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}
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return SDL_TRUE;
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}
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static SDL_bool
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WIN_AddDisplay(LPTSTR DeviceName)
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{
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SDL_VideoDisplay display;
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SDL_DisplayData *displaydata;
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SDL_DisplayMode mode;
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DISPLAY_DEVICE device;
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#ifdef DEBUG_MODES
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printf("Display: %s\n", WIN_StringToUTF8(DeviceName));
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#endif
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if (!WIN_GetDisplayMode(DeviceName, ENUM_CURRENT_SETTINGS, &mode)) {
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return SDL_FALSE;
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}
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displaydata = (SDL_DisplayData *) SDL_malloc(sizeof(*displaydata));
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if (!displaydata) {
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return SDL_FALSE;
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}
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SDL_memcpy(displaydata->DeviceName, DeviceName,
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sizeof(displaydata->DeviceName));
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SDL_zero(display);
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device.cb = sizeof(device);
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if (EnumDisplayDevices(DeviceName, 0, &device, 0)) {
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display.name = WIN_StringToUTF8(device.DeviceString);
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}
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display.desktop_mode = mode;
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display.current_mode = mode;
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display.driverdata = displaydata;
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SDL_AddVideoDisplay(&display);
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SDL_free(display.name);
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return SDL_TRUE;
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}
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int
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WIN_InitModes(_THIS)
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{
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int pass;
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DWORD i, j, count;
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DISPLAY_DEVICE device;
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device.cb = sizeof(device);
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/* Get the primary display in the first pass */
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for (pass = 0; pass < 2; ++pass) {
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for (i = 0; ; ++i) {
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TCHAR DeviceName[32];
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if (!EnumDisplayDevices(NULL, i, &device, 0)) {
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break;
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}
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if (!(device.StateFlags & DISPLAY_DEVICE_ATTACHED_TO_DESKTOP)) {
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continue;
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}
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if (pass == 0) {
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if (!(device.StateFlags & DISPLAY_DEVICE_PRIMARY_DEVICE)) {
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continue;
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}
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} else {
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if (device.StateFlags & DISPLAY_DEVICE_PRIMARY_DEVICE) {
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continue;
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}
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}
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SDL_memcpy(DeviceName, device.DeviceName, sizeof(DeviceName));
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#ifdef DEBUG_MODES
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printf("Device: %s\n", WIN_StringToUTF8(DeviceName));
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#endif
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count = 0;
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for (j = 0; ; ++j) {
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if (!EnumDisplayDevices(DeviceName, j, &device, 0)) {
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break;
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}
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if (!(device.StateFlags & DISPLAY_DEVICE_ATTACHED_TO_DESKTOP)) {
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continue;
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}
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if (pass == 0) {
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if (!(device.StateFlags & DISPLAY_DEVICE_PRIMARY_DEVICE)) {
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continue;
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}
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} else {
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if (device.StateFlags & DISPLAY_DEVICE_PRIMARY_DEVICE) {
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continue;
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}
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}
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count += WIN_AddDisplay(device.DeviceName);
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}
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if (count == 0) {
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WIN_AddDisplay(DeviceName);
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}
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}
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}
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if (_this->num_displays == 0) {
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return SDL_SetError("No displays available");
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}
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return 0;
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}
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int
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WIN_GetDisplayBounds(_THIS, SDL_VideoDisplay * display, SDL_Rect * rect)
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{
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SDL_DisplayModeData *data = (SDL_DisplayModeData *) display->current_mode.driverdata;
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rect->x = (int)SDL_ceil(data->DeviceMode.dmPosition.x * data->ScaleX);
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rect->y = (int)SDL_ceil(data->DeviceMode.dmPosition.y * data->ScaleY);
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rect->w = (int)SDL_ceil(data->DeviceMode.dmPelsWidth * data->ScaleX);
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rect->h = (int)SDL_ceil(data->DeviceMode.dmPelsHeight * data->ScaleY);
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return 0;
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}
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void
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WIN_GetDisplayModes(_THIS, SDL_VideoDisplay * display)
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{
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SDL_DisplayData *data = (SDL_DisplayData *) display->driverdata;
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DWORD i;
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SDL_DisplayMode mode;
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for (i = 0;; ++i) {
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if (!WIN_GetDisplayMode(data->DeviceName, i, &mode)) {
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break;
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}
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if (SDL_ISPIXELFORMAT_INDEXED(mode.format)) {
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/* We don't support palettized modes now */
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SDL_free(mode.driverdata);
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continue;
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}
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if (mode.format != SDL_PIXELFORMAT_UNKNOWN) {
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if (!SDL_AddDisplayMode(display, &mode)) {
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SDL_free(mode.driverdata);
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}
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} else {
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SDL_free(mode.driverdata);
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}
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}
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}
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int
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WIN_SetDisplayMode(_THIS, SDL_VideoDisplay * display, SDL_DisplayMode * mode)
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{
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SDL_DisplayData *displaydata = (SDL_DisplayData *) display->driverdata;
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SDL_DisplayModeData *data = (SDL_DisplayModeData *) mode->driverdata;
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LONG status;
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status =
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ChangeDisplaySettingsEx(displaydata->DeviceName, &data->DeviceMode,
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NULL, CDS_FULLSCREEN, NULL);
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if (status != DISP_CHANGE_SUCCESSFUL) {
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const char *reason = "Unknown reason";
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switch (status) {
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case DISP_CHANGE_BADFLAGS:
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reason = "DISP_CHANGE_BADFLAGS";
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break;
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case DISP_CHANGE_BADMODE:
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reason = "DISP_CHANGE_BADMODE";
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break;
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case DISP_CHANGE_BADPARAM:
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reason = "DISP_CHANGE_BADPARAM";
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break;
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case DISP_CHANGE_FAILED:
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reason = "DISP_CHANGE_FAILED";
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break;
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}
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return SDL_SetError("ChangeDisplaySettingsEx() failed: %s", reason);
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}
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EnumDisplaySettings(displaydata->DeviceName, ENUM_CURRENT_SETTINGS, &data->DeviceMode);
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return 0;
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}
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void
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WIN_QuitModes(_THIS)
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{
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/* All fullscreen windows should have restored modes by now */
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}
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#endif /* SDL_VIDEO_DRIVER_WINDOWS */
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/* vi: set ts=4 sw=4 expandtab: */
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