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annotate src/video/wincommon/SDL_syswm.c @ 1662:782fd950bd46 SDL-1.3

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Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API. WARNING: None of the video drivers have been updated for the new API yet! The API is still under design and very fluid. The code is now run through a consistent indent format: indent -i4 -nut -nsc -br -ce The headers are being converted to automatically generate doxygen documentation.
author Sam Lantinga <slouken@libsdl.org>
date Sun, 28 May 2006 13:04:16 +0000
parents 720f8bb49d7d
children 4da1ee79c9af
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1 /*
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2 SDL - Simple DirectMedia Layer
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3 Copyright (C) 1997-2006 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 #define WIN32_LEAN_AND_MEAN
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25 #include <windows.h>
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26
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27 #include "SDL_version.h"
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28 #include "SDL_video.h"
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29 #include "SDL_loadso.h"
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30 #include "SDL_syswm.h"
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31 #include "../SDL_pixels_c.h"
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32 #include "../SDL_cursor_c.h"
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33 #include "SDL_syswm_c.h"
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34 #include "SDL_wingl_c.h"
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35
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36
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37 #ifdef _WIN32_WCE
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38 #define DISABLE_ICON_SUPPORT
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39 #endif
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40
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41 /* The screen icon -- needs to be freed on SDL_VideoQuit() */
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42 HICON screen_icn = NULL;
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43
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44 #ifdef _WIN32_WCE
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45
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46 BOOL (WINAPI * CoreCatchInput) (int flag) = NULL;
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47 int input_catched = 0;
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48 HINSTANCE coredll = NULL;
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49
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50 // the same API call that gx.dll does to catch the input
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51 void
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52 LoadInputCatchFunc ()
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53 {
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54 coredll = SDL_LoadObject ("coredll.dll");
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55 if (coredll) {
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56 CoreCatchInput =
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57 (int (WINAPI *) (int)) GetProcAddress (coredll,
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58 (const unsigned short *)
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59 1453);
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60 }
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61 }
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62
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63 #endif
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64
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65
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66 /* Win32 icon mask semantics are different from those of SDL:
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67 SDL applies the mask to the icon and copies result to desktop.
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68 Win32 applies the mask to the desktop and XORs the icon on.
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69 This means that the SDL mask needs to be applied to the icon and
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70 then inverted and passed to Win32.
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71 */
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72 void
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73 WIN_SetWMIcon (_THIS, SDL_Surface * icon, Uint8 * mask)
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74 {
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75 #ifdef DISABLE_ICON_SUPPORT
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76 return;
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77 #else
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78 SDL_Palette *pal_256;
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79 SDL_Surface *icon_256;
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80 Uint8 *pdata, *pwin32;
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81 Uint8 *mdata, *mwin32, m = 0;
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82 int icon_len;
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83 int icon_plen;
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84 int icon_mlen;
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85 int icon_pitch;
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86 int mask_pitch;
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87 SDL_Rect bounds;
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88 int i, skip;
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89 int row, col;
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90 struct /* quasi-BMP format */ Win32Icon
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91 {
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92 Uint32 biSize;
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93 Sint32 biWidth;
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94 Sint32 biHeight;
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95 Uint16 biPlanes;
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96 Uint16 biBitCount;
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97 Uint32 biCompression;
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98 Uint32 biSizeImage;
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99 Sint32 biXPelsPerMeter;
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100 Sint32 biYPelsPerMeter;
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101 Uint32 biClrUsed;
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102 Uint32 biClrImportant;
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103 struct /* RGBQUAD -- note it's BGR ordered */
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104 {
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105 Uint8 rgbBlue;
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106 Uint8 rgbGreen;
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107 Uint8 rgbRed;
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108 Uint8 rgbReserved;
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109 } biColors[256];
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110 /* Pixels:
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111 Uint8 pixels[]
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112 */
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113 /* Mask:
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114 Uint8 mask[]
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115 */
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116 } *icon_win32;
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117
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118 /* Allocate the win32 bmp icon and set everything to zero */
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119 icon_pitch = ((icon->w + 3) & ~3);
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120 mask_pitch = ((icon->w + 7) / 8);
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121 icon_plen = icon->h * icon_pitch;
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122 icon_mlen = icon->h * mask_pitch;
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123 icon_len = sizeof (*icon_win32) + icon_plen + icon_mlen;
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124 icon_win32 = (struct Win32Icon *) SDL_stack_alloc (Uint8, icon_len);
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125 if (icon_win32 == NULL) {
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126 return;
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127 }
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128 SDL_memset (icon_win32, 0, icon_len);
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129
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130 /* Set the basic BMP parameters */
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131 icon_win32->biSize = sizeof (*icon_win32) - sizeof (icon_win32->biColors);
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132 icon_win32->biWidth = icon->w;
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133 icon_win32->biHeight = icon->h * 2;
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134 icon_win32->biPlanes = 1;
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135 icon_win32->biBitCount = 8;
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136 icon_win32->biSizeImage = icon_plen + icon_mlen;
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137
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138 /* Allocate a standard 256 color icon surface */
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139 icon_256 = SDL_CreateRGBSurface (SDL_SWSURFACE, icon->w, icon->h,
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140 icon_win32->biBitCount, 0, 0, 0, 0);
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141 if (icon_256 == NULL) {
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142 SDL_stack_free (icon_win32);
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143 return;
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144 }
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145 pal_256 = icon_256->format->palette;
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146 if (icon->format->palette &&
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147 (icon->format->BitsPerPixel == icon_256->format->BitsPerPixel)) {
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148 Uint8 black;
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149 SDL_memcpy (pal_256->colors, icon->format->palette->colors,
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150 pal_256->ncolors * sizeof (SDL_Color));
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151 /* Make sure that 0 is black! */
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152 black = SDL_FindColor (pal_256, 0x00, 0x00, 0x00);
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153 pal_256->colors[black] = pal_256->colors[0];
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154 pal_256->colors[0].r = 0x00;
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155 pal_256->colors[0].g = 0x00;
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156 pal_256->colors[0].b = 0x00;
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157 } else {
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158 SDL_DitherColors (pal_256->colors, icon_256->format->BitsPerPixel);
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159 }
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160
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161 /* Now copy color data to the icon BMP */
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162 for (i = 0; i < (1 << icon_win32->biBitCount); ++i) {
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163 icon_win32->biColors[i].rgbRed = pal_256->colors[i].r;
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164 icon_win32->biColors[i].rgbGreen = pal_256->colors[i].g;
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165 icon_win32->biColors[i].rgbBlue = pal_256->colors[i].b;
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166 }
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167
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168 /* Convert icon to a standard surface format. This may not always
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169 be necessary, as Windows supports a variety of BMP formats, but
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170 it greatly simplifies our code.
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171 */
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172 bounds.x = 0;
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173 bounds.y = 0;
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174 bounds.w = icon->w;
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175 bounds.h = icon->h;
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176 if (SDL_LowerBlit (icon, &bounds, icon_256, &bounds) < 0) {
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177 SDL_stack_free (icon_win32);
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178 SDL_FreeSurface (icon_256);
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179 return;
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180 }
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181
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182 /* Copy pixels upside-down to icon BMP, masked with the icon mask */
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183 if (SDL_MUSTLOCK (icon_256) || (icon_256->pitch != icon_pitch)) {
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184 SDL_stack_free (icon_win32);
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185 SDL_FreeSurface (icon_256);
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186 SDL_SetError ("Warning: Unexpected icon_256 characteristics");
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187 return;
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188 }
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189 pdata = (Uint8 *) icon_256->pixels;
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190 mdata = mask;
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191 pwin32 =
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192 (Uint8 *) icon_win32 + sizeof (*icon_win32) + icon_plen - icon_pitch;
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193 skip = icon_pitch - icon->w;
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194 for (row = 0; row < icon->h; ++row) {
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195 for (col = 0; col < icon->w; ++col) {
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196 if ((col % 8) == 0) {
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197 m = *mdata++;
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198 }
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199 if ((m & 0x80) != 0x00) {
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200 *pwin32 = *pdata;
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201 }
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202 m <<= 1;
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203 ++pdata;
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204 ++pwin32;
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205 }
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206 pdata += skip;
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207 pwin32 += skip;
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208 pwin32 -= 2 * icon_pitch;
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209 }
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210 SDL_FreeSurface (icon_256);
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211
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212 /* Copy mask inverted and upside-down to icon BMP */
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213 mdata = mask;
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214 mwin32 = (Uint8 *) icon_win32
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215 + sizeof (*icon_win32) + icon_plen + icon_mlen - mask_pitch;
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216 for (row = 0; row < icon->h; ++row) {
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217 for (col = 0; col < mask_pitch; ++col) {
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218 *mwin32++ = ~*mdata++;
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219 }
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220 mwin32 -= 2 * mask_pitch;
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221 }
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222
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223 /* Finally, create the icon handle and set the window icon */
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224 screen_icn = CreateIconFromResourceEx ((Uint8 *) icon_win32, icon_len,
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225 TRUE, 0x00030000, icon->w, icon->h,
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226 LR_DEFAULTCOLOR);
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227 if (screen_icn == NULL) {
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228 SDL_SetError ("Couldn't create Win32 icon handle");
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229 } else {
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230 SetClassLongPtr (SDL_Window, GCLP_HICON, (LONG_PTR) screen_icn);
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231 }
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232 SDL_stack_free (icon_win32);
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233 #endif /* DISABLE_ICON_SUPPORT */
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234 }
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235
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236 void
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237 WIN_SetWMCaption (_THIS, const char *title, const char *icon)
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238 {
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239 #ifdef _WIN32_WCE
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240 /* WinCE uses the UNICODE version */
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241 LPWSTR lpszW = SDL_iconv_utf8_ucs2 ((char *) title);
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242 SetWindowText (SDL_Window, lpszW);
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243 SDL_free (lpszW);
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244 #else
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245 char *lpsz = SDL_iconv_utf8_latin1 ((char *) title);
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246 SetWindowText (SDL_Window, lpsz);
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247 SDL_free (lpsz);
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248 #endif
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249 }
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250
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251 int
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252 WIN_IconifyWindow (_THIS)
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253 {
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254 ShowWindow (SDL_Window, SW_MINIMIZE);
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255 return (1);
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256 }
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257
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258 SDL_GrabMode
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259 WIN_GrabInput (_THIS, SDL_GrabMode mode)
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260 {
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261 if (mode == SDL_GRAB_OFF) {
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262 ClipCursor (NULL);
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263 if (!(SDL_cursorstate & CURSOR_VISIBLE)) {
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264 /* RJR: March 28, 2000
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265 must be leaving relative mode, move mouse from
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266 center of window to where it belongs ... */
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267 POINT pt;
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268 int x, y;
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269 SDL_GetMouseState (&x, &y);
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270 pt.x = x;
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271 pt.y = y;
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272 ClientToScreen (SDL_Window, &pt);
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273 SetCursorPos (pt.x, pt.y);
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274 }
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275 #ifdef _WIN32_WCE
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276 if (input_catched) {
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277 if (!CoreCatchInput)
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278 LoadInputCatchFunc ();
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279
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280 if (CoreCatchInput)
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281 CoreCatchInput (0);
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282 }
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283 #endif
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284 } else {
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285 ClipCursor (&SDL_bounds);
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286 if (!(SDL_cursorstate & CURSOR_VISIBLE)) {
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287 /* RJR: March 28, 2000
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288 must be entering relative mode, get ready by
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289 moving mouse to center of window ... */
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290 POINT pt;
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291 pt.x = (SDL_VideoSurface->w / 2);
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292 pt.y = (SDL_VideoSurface->h / 2);
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293 ClientToScreen (SDL_Window, &pt);
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294 SetCursorPos (pt.x, pt.y);
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295 }
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296 #ifdef _WIN32_WCE
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297 if (!input_catched) {
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298 if (!CoreCatchInput)
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299 LoadInputCatchFunc ();
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300
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301 if (CoreCatchInput)
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302 CoreCatchInput (1);
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303 }
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304 #endif
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305 }
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306 return (mode);
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307 }
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308
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309 /* If 'info' is the right version, this function fills it and returns 1.
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310 Otherwise, in case of a version mismatch, it returns -1.
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311 */
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312 int
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313 WIN_GetWMInfo (_THIS, SDL_SysWMinfo * info)
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314 {
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315 if (info->version.major <= SDL_MAJOR_VERSION) {
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316 info->window = SDL_Window;
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317 if (SDL_VERSIONNUM (info->version.major,
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318 info->version.minor,
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319 info->version.patch) >=
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320 SDL_VERSIONNUM (1, 2, 5)) {
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321 #if SDL_VIDEO_OPENGL
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322 info->hglrc = GL_hrc;
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323 #else
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324 info->hglrc = NULL;
438
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325 #endif
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326 }
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327 return (1);
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328 } else {
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329 SDL_SetError ("Application not compiled with SDL %d.%d\n",
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330 SDL_MAJOR_VERSION, SDL_MINOR_VERSION);
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331 return (-1);
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332 }
0
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333 }
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334
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335 /* vi: set ts=4 sw=4 expandtab: */