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annotate src/power/windows/SDL_syspower.c @ 4573:6399178be313

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Completed work on X11_CreateTexture. Added lots of safety features. These include support for drawing a texture using the core protocol while other textures are drawn using Xrender if Xrender does not support the color format of the said texture or any other fault with Xrender.
author Sunny Sachanandani <sunnysachanandani@gmail.com>
date Fri, 28 May 2010 20:40:09 +0530
parents f7b03b6838cb
children c2539ff054c8
rev   line source
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1 /*
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2 SDL - Simple DirectMedia Layer
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3 Copyright (C) 1997-2010 Sam Lantinga
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4
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5 This library is free software; you can redistribute it and/or
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6 modify it under the terms of the GNU Lesser General Public
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7 License as published by the Free Software Foundation; either
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8 version 2.1 of the License, or (at your option) any later version.
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9
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10 This library is distributed in the hope that it will be useful,
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11 but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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13 Lesser General Public License for more details.
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14
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15 You should have received a copy of the GNU Lesser General Public
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16 License along with this library; if not, write to the Free Software
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17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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18
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19 Sam Lantinga
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20 slouken@libsdl.org
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21 */
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22 #include "SDL_config.h"
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23
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24 #ifndef SDL_POWER_DISABLED
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25 #ifdef SDL_POWER_WINDOWS
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26
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27 #define WIN32_LEAN_AND_MEAN
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28 #include <windows.h>
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29
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30 #include "SDL_power.h"
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31
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32 SDL_bool
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33 SDL_GetPowerInfo_Windows(SDL_PowerState * state, int *seconds, int *percent)
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34 {
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35 SYSTEM_POWER_STATUS status;
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36 SDL_bool need_details = SDL_FALSE;
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37
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38 /* This API should exist back to Win95 and Windows CE. */
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39 if (!GetSystemPowerStatus(&status)) {
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40 /* !!! FIXME: push GetLastError() into SDL_GetError() */
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41 *state = SDL_POWERSTATE_UNKNOWN;
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42 } else if (status.BatteryFlag == 0xFF) { /* unknown state */
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43 *state = SDL_POWERSTATE_UNKNOWN;
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44 } else if (status.BatteryFlag & (1 << 7)) { /* no battery */
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45 *state = SDL_POWERSTATE_NO_BATTERY;
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46 } else if (status.BatteryFlag & (1 << 3)) { /* charging */
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47 *state = SDL_POWERSTATE_CHARGING;
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48 need_details = SDL_TRUE;
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49 } else if (status.ACLineStatus == 1) {
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50 *state = SDL_POWERSTATE_CHARGED; /* on AC, not charging. */
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51 need_details = SDL_TRUE;
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52 } else {
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53 *state = SDL_POWERSTATE_ON_BATTERY; /* not on AC. */
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54 need_details = SDL_TRUE;
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55 }
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56
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57 *percent = -1;
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58 *seconds = -1;
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59 if (need_details) {
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60 const int pct = (int) status.BatteryLifePercent;
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61 const int secs = (int) status.BatteryLifeTime;
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62
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63 if (pct != 255) { /* 255 == unknown */
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64 *percent = (pct > 100) ? 100 : pct; /* clamp between 0%, 100% */
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65 }
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66 if (secs != 0xFFFFFFFF) { /* ((DWORD)-1) == unknown */
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67 *seconds = secs;
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68 }
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69 }
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70
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71 return SDL_TRUE; /* always the definitive answer on Windows. */
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72 }
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73
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74 #endif /* SDL_POWER_WINDOWS */
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75 #endif /* SDL_POWER_DISABLED */
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76
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77 /* vi: set ts=4 sw=4 expandtab: */