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1 /*
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2 SDL - Simple DirectMedia Layer
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3 Copyright (C) 1997, 1998, 1999 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 Library General Public
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7 License as published by the Free Software Foundation; either
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8 version 2 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 Library 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 Library General Public
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16 License along with this library; if not, write to the Free
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17 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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18
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19 Sam Lantinga
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20 slouken@devolution.com
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21 */
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22
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23 #ifdef SAVE_RCSID
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24 static char rcsid =
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25 "@(#) $Id$"
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26 #endif
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27
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28 #include <stdio.h>
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29 #include <malloc.h>
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30 #include <windows.h>
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31
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32 #include "SDL_version.h"
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33 #include "SDL_error.h"
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34 #include "SDL_video.h"
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35 #include "SDL_syswm.h"
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36 #include "SDL_syswm_c.h"
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37 #include "SDL_pixels_c.h"
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38
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39 #ifdef _WIN32_WCE
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40 #define DISABLE_ICON_SUPPORT
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41 #endif
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42
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43 /* RJR: March 28, 2000
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44 we need "SDL_cursor_c.h" for mods to WIN_GrabInput */
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45 #include "SDL_cursor_c.h"
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46
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47 /* The screen icon -- needs to be freed on SDL_VideoQuit() */
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48 HICON screen_icn = NULL;
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49
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50 /* Win32 icon mask semantics are different from those of SDL:
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51 SDL applies the mask to the icon and copies result to desktop.
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52 Win32 applies the mask to the desktop and XORs the icon on.
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53 This means that the SDL mask needs to be applied to the icon and
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54 then inverted and passed to Win32.
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55 */
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56 void WIN_SetWMIcon(_THIS, SDL_Surface *icon, Uint8 *mask)
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57 {
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58 #ifdef DISABLE_ICON_SUPPORT
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59 return;
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60 #else
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61 SDL_Palette *pal_256;
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62 SDL_Surface *icon_256;
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63 Uint8 *pdata, *pwin32;
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64 Uint8 *mdata, *mwin32, m = 0;
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65 int icon_len;
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66 int icon_plen;
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67 int icon_mlen;
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68 int icon_pitch;
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69 int mask_pitch;
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70 SDL_Rect bounds;
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71 int i, skip;
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72 int row, col;
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73 struct /* quasi-BMP format */ Win32Icon {
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74 Uint32 biSize;
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75 Sint32 biWidth;
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76 Sint32 biHeight;
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77 Uint16 biPlanes;
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78 Uint16 biBitCount;
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79 Uint32 biCompression;
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80 Uint32 biSizeImage;
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81 Sint32 biXPelsPerMeter;
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82 Sint32 biYPelsPerMeter;
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83 Uint32 biClrUsed;
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84 Uint32 biClrImportant;
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85 struct /* RGBQUAD -- note it's BGR ordered */ {
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86 Uint8 rgbBlue;
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87 Uint8 rgbGreen;
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88 Uint8 rgbRed;
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89 Uint8 rgbReserved;
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90 } biColors[256];
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91 /* Pixels:
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92 Uint8 pixels[]
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93 */
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94 /* Mask:
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95 Uint8 mask[]
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96 */
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97 } *icon_win32;
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98
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99 /* Allocate the win32 bmp icon and set everything to zero */
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100 icon_pitch = ((icon->w+3)&~3);
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101 mask_pitch = ((icon->w+7)/8);
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102 icon_plen = icon->h*icon_pitch;
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103 icon_mlen = icon->h*mask_pitch;
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104 icon_len = sizeof(*icon_win32)+icon_plen+icon_mlen;
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105 icon_win32 = (struct Win32Icon *)alloca(icon_len);
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106 if ( icon_win32 == NULL ) {
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107 return;
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108 }
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109 memset(icon_win32, 0, icon_len);
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110
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111 /* Set the basic BMP parameters */
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112 icon_win32->biSize = sizeof(*icon_win32)-sizeof(icon_win32->biColors);
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113 icon_win32->biWidth = icon->w;
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114 icon_win32->biHeight = icon->h*2;
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115 icon_win32->biPlanes = 1;
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116 icon_win32->biBitCount = 8;
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117 icon_win32->biSizeImage = icon_plen+icon_mlen;
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118
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119 /* Allocate a standard 256 color icon surface */
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120 icon_256 = SDL_CreateRGBSurface(SDL_SWSURFACE, icon->w, icon->h,
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121 icon_win32->biBitCount, 0, 0, 0, 0);
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122 if ( icon_256 == NULL ) {
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123 return;
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124 }
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125 pal_256 = icon_256->format->palette;
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126 if (icon->format->palette &&
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127 (icon->format->BitsPerPixel == icon_256->format->BitsPerPixel)){
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128 Uint8 black;
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129 memcpy(pal_256->colors, icon->format->palette->colors,
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130 pal_256->ncolors*sizeof(SDL_Color));
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131 /* Make sure that 0 is black! */
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132 black = SDL_FindColor(pal_256, 0x00, 0x00, 0x00);
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133 pal_256->colors[black] = pal_256->colors[0];
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134 pal_256->colors[0].r = 0x00;
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135 pal_256->colors[0].g = 0x00;
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136 pal_256->colors[0].b = 0x00;
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137 } else {
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138 SDL_DitherColors(pal_256->colors,
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139 icon_256->format->BitsPerPixel);
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140 }
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141
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142 /* Now copy color data to the icon BMP */
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143 for ( i=0; i<(1<<icon_win32->biBitCount); ++i ) {
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144 icon_win32->biColors[i].rgbRed = pal_256->colors[i].r;
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145 icon_win32->biColors[i].rgbGreen = pal_256->colors[i].g;
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146 icon_win32->biColors[i].rgbBlue = pal_256->colors[i].b;
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147 }
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148
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149 /* Convert icon to a standard surface format. This may not always
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150 be necessary, as Windows supports a variety of BMP formats, but
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151 it greatly simplifies our code.
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152 */
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153 bounds.x = 0;
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154 bounds.y = 0;
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155 bounds.w = icon->w;
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156 bounds.h = icon->h;
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157 if ( SDL_LowerBlit(icon, &bounds, icon_256, &bounds) < 0 ) {
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158 SDL_FreeSurface(icon_256);
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159 return;
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160 }
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161
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162 /* Copy pixels upside-down to icon BMP, masked with the icon mask */
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163 if ( SDL_MUSTLOCK(icon_256) || (icon_256->pitch != icon_pitch) ) {
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164 SDL_FreeSurface(icon_256);
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165 SDL_SetError("Warning: Unexpected icon_256 characteristics");
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166 return;
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167 }
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168 pdata = (Uint8 *)icon_256->pixels;
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169 mdata = mask;
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170 pwin32 = (Uint8 *)icon_win32+sizeof(*icon_win32)+icon_plen-icon_pitch;
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171 skip = icon_pitch - icon->w;
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172 for ( row=0; row<icon->h; ++row ) {
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173 for ( col=0; col<icon->w; ++col ) {
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174 if ( (col%8) == 0 ) {
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175 m = *mdata++;
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176 }
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177 if ( (m&0x80) != 0x00 ) {
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178 *pwin32 = *pdata;
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179 }
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180 m <<= 1;
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181 ++pdata;
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182 ++pwin32;
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183 }
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184 pdata += skip;
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185 pwin32 += skip;
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186 pwin32 -= 2*icon_pitch;
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187 }
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188 SDL_FreeSurface(icon_256);
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189
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190 /* Copy mask inverted and upside-down to icon BMP */
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191 mdata = mask;
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192 mwin32 = (Uint8 *)icon_win32
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193 +sizeof(*icon_win32)+icon_plen+icon_mlen-mask_pitch;
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194 for ( row=0; row<icon->h; ++row ) {
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195 for ( col=0; col<mask_pitch; ++col ) {
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196 *mwin32++ = ~*mdata++;
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197 }
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198 mwin32 -= 2*mask_pitch;
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199 }
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200
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201 /* Finally, create the icon handle and set the window icon */
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202 screen_icn = CreateIconFromResourceEx((Uint8 *)icon_win32, icon_len,
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203 TRUE, 0x00030000, icon->w, icon->h, LR_DEFAULTCOLOR);
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204 if ( screen_icn == NULL ) {
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205 SDL_SetError("Couldn't create Win32 icon handle");
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206 } else {
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207 SetClassLong(SDL_Window, GCL_HICON, (LONG)screen_icn);
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208 }
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209 #endif /* DISABLE_ICON_SUPPORT */
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210 }
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211
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212 void WIN_SetWMCaption(_THIS, const char *title, const char *icon)
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213 {
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214 #ifdef _WIN32_WCE
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215 /* WinCE uses the UNICODE version */
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216 int nLen = strlen(title);
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217 LPWSTR lpszW = alloca((nLen+1)*2);
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218 MultiByteToWideChar(CP_ACP, 0, title, -1, lpszW, nLen);
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219 SetWindowText(SDL_Window, lpszW);
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220 #else
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221 SetWindowText(SDL_Window, title);
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222 #endif
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223 }
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224
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225 int WIN_IconifyWindow(_THIS)
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226 {
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227 ShowWindow(SDL_Window, SW_MINIMIZE);
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228 return(1);
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229 }
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230
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231 SDL_GrabMode WIN_GrabInput(_THIS, SDL_GrabMode mode)
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232 {
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233 if ( mode == SDL_GRAB_OFF ) {
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234 ClipCursor(NULL);
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235 if ( !(SDL_cursorstate & CURSOR_VISIBLE) ) {
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236 /* RJR: March 28, 2000
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237 must be leaving relative mode, move mouse from
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238 center of window to where it belongs ... */
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239 POINT pt;
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240 int x, y;
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241 SDL_GetMouseState(&x,&y);
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242 pt.x = x;
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243 pt.y = y;
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244 ClientToScreen(SDL_Window, &pt);
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245 SetCursorPos(pt.x,pt.y);
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246 }
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247 } else {
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248 ClipCursor(&SDL_bounds);
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249 if ( !(SDL_cursorstate & CURSOR_VISIBLE) ) {
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250 /* RJR: March 28, 2000
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251 must be entering relative mode, get ready by
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252 moving mouse to center of window ... */
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253 POINT pt;
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254 pt.x = (SDL_VideoSurface->w/2);
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255 pt.y = (SDL_VideoSurface->h/2);
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256 ClientToScreen(SDL_Window, &pt);
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257 SetCursorPos(pt.x, pt.y);
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258 }
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259 }
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260 return(mode);
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261 }
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262
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263 /* If 'info' is the right version, this function fills it and returns 1.
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264 Otherwise, in case of a version mismatch, it returns -1.
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265 */
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266 int WIN_GetWMInfo(_THIS, SDL_SysWMinfo *info)
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267 {
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268 if ( info->version.major <= SDL_MAJOR_VERSION ) {
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269 info->window = SDL_Window;
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270 return(1);
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271 } else {
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272 SDL_SetError("Application not compiled with SDL %d.%d\n",
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273 SDL_MAJOR_VERSION, SDL_MINOR_VERSION);
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274 return(-1);
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275 }
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276 }
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