diff src/video/windows/SDL_windowsmodes.c @ 5062:e8916fe9cfc8

Fixed bug #925 Changed "win32" to "windows"
author Sam Lantinga <slouken@libsdl.org>
date Thu, 20 Jan 2011 18:04:05 -0800
parents src/video/win32/SDL_win32modes.c@e1664f94f026
children c2539ff054c8
line wrap: on
line diff
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/video/windows/SDL_windowsmodes.c	Thu Jan 20 18:04:05 2011 -0800
@@ -0,0 +1,287 @@
+/*
+    SDL - Simple DirectMedia Layer
+    Copyright (C) 1997-2010 Sam Lantinga
+
+    This library is free software; you can redistribute it and/or
+    modify it under the terms of the GNU Lesser General Public
+    License as published by the Free Software Foundation; either
+    version 2.1 of the License, or (at your option) any later version.
+
+    This library is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+    Lesser General Public License for more details.
+
+    You should have received a copy of the GNU Lesser General Public
+    License along with this library; if not, write to the Free Software
+    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+
+    Sam Lantinga
+    slouken@libsdl.org
+*/
+#include "SDL_config.h"
+
+#include "SDL_windowsvideo.h"
+
+
+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);
+
+    /* 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;
+#ifdef _WIN32_WCE
+    /* In WinCE EnumDisplaySettings(ENUM_CURRENT_SETTINGS) doesn't take the user defined orientation
+       into account but GetSystemMetrics does. */
+    if (index == ENUM_CURRENT_SETTINGS) {
+        mode->w = GetSystemMetrics(SM_CXSCREEN);
+        mode->h = GetSystemMetrics(SM_CYSCREEN);
+    }
+#endif
+
+/* WinCE has no GetDIBits, therefore we can't use it to get the display format */
+#ifndef _WIN32_WCE
+    if (index == ENUM_CURRENT_SETTINGS
+        && (hdc = CreateDC(deviceName, NULL, NULL, NULL)) != NULL) {
+        char bmi_data[sizeof(BITMAPINFOHEADER) + 256 * sizeof(RGBQUAD)];
+        LPBITMAPINFO bmi;
+        HBITMAP hbm;
+
+        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
+#endif /* _WIN32_WCE */
+    {
+        /* 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;
+
+#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);
+    display.desktop_mode = mode;
+    display.current_mode = mode;
+    display.driverdata = displaydata;
+    SDL_AddVideoDisplay(&display);
+    return SDL_TRUE;
+}
+
+int
+WIN_InitModes(_THIS)
+{
+    DWORD i, j, count;
+    DISPLAY_DEVICE device;
+
+    device.cb = sizeof(device);
+    for (i = 0;; ++i) {
+        TCHAR DeviceName[32];
+
+        if (!EnumDisplayDevices(NULL, i, &device, 0)) {
+            break;
+        }
+        if (!(device.StateFlags & DISPLAY_DEVICE_ATTACHED_TO_DESKTOP)) {
+            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;
+            }
+            count += WIN_AddDisplay(device.DeviceName);
+        }
+        if (count == 0) {
+            WIN_AddDisplay(DeviceName);
+        }
+    }
+    if (_this->num_displays == 0) {
+        SDL_SetError("No displays available");
+        return -1;
+    }
+    return 0;
+}
+
+int
+WIN_GetDisplayBounds(_THIS, SDL_VideoDisplay * display, SDL_Rect * rect)
+{
+    SDL_DisplayModeData *data = (SDL_DisplayModeData *) display->desktop_mode.driverdata;
+
+#ifdef _WIN32_WCE
+    // WINCE: DEVMODE.dmPosition not found, or may be mingw32ce bug
+    rect->x = 0;
+    rect->y = 0;
+    rect->w = display->windows->w;
+    rect->h = display->windows->h;
+#else
+    rect->x = (int)data->DeviceMode.dmPosition.x;
+    rect->y = (int)data->DeviceMode.dmPosition.y;
+    rect->w = data->DeviceMode.dmPelsWidth;
+    rect->h = data->DeviceMode.dmPelsHeight;
+#endif
+    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 (mode.format != SDL_PIXELFORMAT_UNKNOWN) {
+            if (!SDL_AddDisplayMode(display, &mode)) {
+                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;
+
+#ifdef _WIN32_WCE
+    /* TODO: implement correctly.
+       On my Asus MyPAL, if I execute the code below
+       I get DISP_CHANGE_BADFLAGS and the Titlebar of the fullscreen window stays
+       visible ... (SDL_RaiseWindow() would fix that one) */
+    return 0;
+#endif
+
+    status =
+        ChangeDisplaySettingsEx(displaydata->DeviceName, &data->DeviceMode,
+                                NULL, CDS_FULLSCREEN, NULL);
+    if (status == DISP_CHANGE_SUCCESSFUL) {
+        return 0;
+    } else {
+        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;
+        }
+        SDL_SetError("ChangeDisplaySettingsEx() failed: %s", reason);
+        return -1;
+    }
+}
+
+void
+WIN_QuitModes(_THIS)
+{
+    ChangeDisplaySettingsEx(NULL, NULL, NULL, 0, NULL);
+}
+
+/* vi: set ts=4 sw=4 expandtab: */