annotate src/video/SDL_cursor.c @ 553:417f8709e648

There's a bug in the VC7 optimizer relating to the duff loop optimization
author Sam Lantinga <slouken@libsdl.org>
date Mon, 02 Dec 2002 02:40:58 +0000
parents 5c74ac147358
children 591b438ab94a
rev   line source
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1 /*
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2 SDL - Simple DirectMedia Layer
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f6ffac90895c Updated copyright information for 2002
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3 Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002 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@libsdl.org
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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 /* General cursor handling code for SDL */
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29
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30 #include <stdio.h>
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31 #include <stdlib.h>
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32 #include <string.h>
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33
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34 #include "SDL_mutex.h"
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35 #include "SDL_error.h"
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36 #include "SDL_video.h"
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37 #include "SDL_mouse.h"
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38 #include "SDL_blit.h"
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39 #include "SDL_events_c.h"
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40 #include "SDL_sysvideo.h"
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41 #include "SDL_sysevents.h"
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42 #include "SDL_cursor_c.h"
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43 #include "SDL_pixels_c.h"
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44 #include "default_cursor.h"
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45
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46 /* These are static for our cursor handling code */
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47 volatile int SDL_cursorstate = CURSOR_VISIBLE;
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48 SDL_Cursor *SDL_cursor = NULL;
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49 static SDL_Cursor *SDL_defcursor = NULL;
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50 SDL_mutex *SDL_cursorlock = NULL;
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51
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52 /* Public functions */
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53 void SDL_CursorQuit(void)
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54 {
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55 if ( SDL_cursor != NULL ) {
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56 SDL_Cursor *cursor;
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57
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58 SDL_cursorstate &= ~CURSOR_VISIBLE;
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59 if ( SDL_cursor != SDL_defcursor ) {
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60 SDL_FreeCursor(SDL_cursor);
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61 }
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62 SDL_cursor = NULL;
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63 if ( SDL_defcursor != NULL ) {
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64 cursor = SDL_defcursor;
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65 SDL_defcursor = NULL;
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66 SDL_FreeCursor(cursor);
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67 }
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68 }
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69 if ( SDL_cursorlock != NULL ) {
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70 SDL_DestroyMutex(SDL_cursorlock);
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71 SDL_cursorlock = NULL;
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72 }
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73 }
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74 int SDL_CursorInit(Uint32 multithreaded)
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75 {
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76 /* We don't have mouse focus, and the cursor isn't drawn yet */
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77 SDL_cursorstate = CURSOR_VISIBLE;
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78
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79 /* Create the default cursor */
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80 if ( SDL_defcursor == NULL ) {
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81 SDL_defcursor = SDL_CreateCursor(default_cdata, default_cmask,
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82 DEFAULT_CWIDTH, DEFAULT_CHEIGHT,
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83 DEFAULT_CHOTX, DEFAULT_CHOTY);
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84 SDL_SetCursor(SDL_defcursor);
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85 }
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86
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87 /* Create a lock if necessary */
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88 if ( multithreaded ) {
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89 SDL_cursorlock = SDL_CreateMutex();
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90 }
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91
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92 /* That's it! */
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93 return(0);
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94 }
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95
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96 /* Multi-thread support for cursors */
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97 #ifndef SDL_LockCursor
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98 void SDL_LockCursor(void)
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99 {
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100 if ( SDL_cursorlock ) {
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101 SDL_mutexP(SDL_cursorlock);
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102 }
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103 }
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104 #endif
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105 #ifndef SDL_UnlockCursor
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106 void SDL_UnlockCursor(void)
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107 {
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108 if ( SDL_cursorlock ) {
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109 SDL_mutexV(SDL_cursorlock);
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110 }
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111 }
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112 #endif
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113
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114 /* Software cursor drawing support */
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115 SDL_Cursor * SDL_CreateCursor (Uint8 *data, Uint8 *mask,
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116 int w, int h, int hot_x, int hot_y)
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117 {
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118 SDL_VideoDevice *video = current_video;
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119 int savelen;
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120 int i;
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121 SDL_Cursor *cursor;
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122
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123 /* Make sure the width is a multiple of 8 */
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124 w = ((w+7)&~7);
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125
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126 /* Sanity check the hot spot */
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127 if ( (hot_x < 0) || (hot_y < 0) || (hot_x >= w) || (hot_y >= h) ) {
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128 SDL_SetError("Cursor hot spot doesn't lie within cursor");
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129 return(NULL);
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130 }
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131
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132 /* Allocate memory for the cursor */
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133 cursor = (SDL_Cursor *)malloc(sizeof *cursor);
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134 if ( cursor == NULL ) {
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135 SDL_OutOfMemory();
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136 return(NULL);
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137 }
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138 savelen = (w*4)*h;
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139 cursor->area.x = 0;
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140 cursor->area.y = 0;
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141 cursor->area.w = w;
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142 cursor->area.h = h;
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143 cursor->hot_x = hot_x;
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144 cursor->hot_y = hot_y;
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145 cursor->data = (Uint8 *)malloc((w/8)*h*2);
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146 cursor->mask = cursor->data+((w/8)*h);
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147 cursor->save[0] = (Uint8 *)malloc(savelen*2);
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148 cursor->save[1] = cursor->save[0] + savelen;
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149 cursor->wm_cursor = NULL;
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150 if ( ! cursor->data || ! cursor->save[0] ) {
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151 SDL_FreeCursor(cursor);
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152 SDL_OutOfMemory();
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153 return(NULL);
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154 }
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155 for ( i=((w/8)*h)-1; i>=0; --i ) {
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156 cursor->data[i] = data[i];
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157 cursor->mask[i] = mask[i] | data[i];
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158 }
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159 memset(cursor->save[0], 0, savelen*2);
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160
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161 /* If the window manager gives us a good cursor, we're done! */
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162 if ( video->CreateWMCursor ) {
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163 cursor->wm_cursor = video->CreateWMCursor(video, data, mask,
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164 w, h, hot_x, hot_y);
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165 } else {
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166 cursor->wm_cursor = NULL;
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167 }
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168 return(cursor);
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169 }
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170
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171 /* SDL_SetCursor(NULL) can be used to force the cursor redraw,
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172 if this is desired for any reason. This is used when setting
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173 the video mode and when the SDL window gains the mouse focus.
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174 */
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175 void SDL_SetCursor (SDL_Cursor *cursor)
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176 {
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177 SDL_VideoDevice *video = current_video;
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178 SDL_VideoDevice *this = current_video;
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179
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180 /* Make sure that the video subsystem has been initialized */
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181 if ( ! video ) {
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182 return;
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183 }
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184
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185 /* Prevent the event thread from moving the mouse */
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186 SDL_LockCursor();
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187
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188 /* Set the new cursor */
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189 if ( cursor && (cursor != SDL_cursor) ) {
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190 /* Erase the current mouse position */
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191 if ( SHOULD_DRAWCURSOR(SDL_cursorstate) ) {
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192 SDL_EraseCursor(SDL_VideoSurface);
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193 } else if ( video->MoveWMCursor ) {
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194 /* If the video driver is moving the cursor directly,
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195 it needs to hide the old cursor before (possibly)
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196 showing the new one. (But don't erase NULL cursor)
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197 */
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198 if ( SDL_cursor ) {
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199 video->ShowWMCursor(this, NULL);
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200 }
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201 }
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202 SDL_cursor = cursor;
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203 }
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204
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205 /* Draw the new mouse cursor */
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206 if ( SDL_cursor && (SDL_cursorstate&CURSOR_VISIBLE) ) {
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207 /* Use window manager cursor if possible */
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208 if ( SDL_cursor->wm_cursor &&
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209 video->ShowWMCursor(this, SDL_cursor->wm_cursor) )
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210 SDL_cursorstate &= ~CURSOR_USINGSW;
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211 else {
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212 SDL_cursorstate |= CURSOR_USINGSW;
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213 if ( video->ShowWMCursor ) {
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214 video->ShowWMCursor(this, NULL);
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215 }
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216 { int x, y;
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217 SDL_GetMouseState(&x, &y);
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218 SDL_cursor->area.x = (x - SDL_cursor->hot_x);
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219 SDL_cursor->area.y = (y - SDL_cursor->hot_y);
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220 }
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221 SDL_DrawCursor(SDL_VideoSurface);
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222 }
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223 } else {
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224 /* Erase window manager mouse (cursor not visible) */
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225 if ( SDL_cursor && (SDL_cursorstate & CURSOR_USINGSW) ) {
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226 SDL_EraseCursor(SDL_VideoSurface);
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227 } else {
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228 if ( video ) {
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229 video->ShowWMCursor(this, NULL);
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230 }
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231 }
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232 }
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233 SDL_UnlockCursor();
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234 }
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235
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236 SDL_Cursor * SDL_GetCursor (void)
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237 {
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238 return(SDL_cursor);
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239 }
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240
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241 void SDL_FreeCursor (SDL_Cursor *cursor)
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242 {
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243 if ( cursor ) {
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244 if ( cursor == SDL_cursor ) {
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245 SDL_SetCursor(SDL_defcursor);
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246 }
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247 if ( cursor != SDL_defcursor ) {
77
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248 SDL_VideoDevice *video = current_video;
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249 SDL_VideoDevice *this = current_video;
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250
0
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251 if ( cursor->data ) {
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252 free(cursor->data);
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253 }
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254 if ( cursor->save[0] ) {
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255 free(cursor->save[0]);
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256 }
77
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257 if ( video && cursor->wm_cursor ) {
0
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258 video->FreeWMCursor(this, cursor->wm_cursor);
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259 }
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260 free(cursor);
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261 }
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262 }
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263 }
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264
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265 int SDL_ShowCursor (int toggle)
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266 {
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267 int showing;
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268
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269 showing = (SDL_cursorstate & CURSOR_VISIBLE);
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270 if ( toggle >= 0 ) {
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271 SDL_LockCursor();
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272 if ( toggle ) {
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273 SDL_cursorstate |= CURSOR_VISIBLE;
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274 } else {
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275 SDL_cursorstate &= ~CURSOR_VISIBLE;
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276 }
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277 SDL_UnlockCursor();
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278 if ( (SDL_cursorstate & CURSOR_VISIBLE) != showing ) {
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279 SDL_VideoDevice *video = current_video;
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280 SDL_VideoDevice *this = current_video;
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281
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282 SDL_SetCursor(NULL);
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283 if ( video && video->CheckMouseMode ) {
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284 video->CheckMouseMode(this);
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285 }
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286 }
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287 } else {
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288 /* Query current state */ ;
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289 }
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290 return(showing ? 1 : 0);
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291 }
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292
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293 void SDL_WarpMouse (Uint16 x, Uint16 y)
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diff changeset
294 {
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295 SDL_VideoDevice *video = current_video;
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296 SDL_VideoDevice *this = current_video;
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297
527
5c74ac147358 Fixed mouse warp position bug with offset video modes
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diff changeset
298 /* If we have an offset video mode, offset the mouse coordinates */
5c74ac147358 Fixed mouse warp position bug with offset video modes
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parents: 297
diff changeset
299 x += (this->screen->offset % this->screen->pitch) /
5c74ac147358 Fixed mouse warp position bug with offset video modes
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parents: 297
diff changeset
300 this->screen->format->BytesPerPixel;
5c74ac147358 Fixed mouse warp position bug with offset video modes
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parents: 297
diff changeset
301 y += (this->screen->offset / this->screen->pitch);
5c74ac147358 Fixed mouse warp position bug with offset video modes
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diff changeset
302
0
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303 /* This generates a mouse motion event */
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parents:
diff changeset
304 if ( video->WarpWMCursor ) {
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305 video->WarpWMCursor(this, x, y);
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diff changeset
306 } else {
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307 SDL_PrivateMouseMotion(0, 0, x, y);
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diff changeset
308 }
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diff changeset
309 }
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diff changeset
310
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diff changeset
311 void SDL_MoveCursor(int x, int y)
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diff changeset
312 {
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diff changeset
313 SDL_VideoDevice *video = current_video;
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diff changeset
314
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diff changeset
315 /* Erase and update the current mouse position */
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parents:
diff changeset
316 if ( SHOULD_DRAWCURSOR(SDL_cursorstate) ) {
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parents:
diff changeset
317 /* Erase and redraw mouse cursor in new position */
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diff changeset
318 SDL_LockCursor();
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diff changeset
319 SDL_EraseCursor(SDL_VideoSurface);
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diff changeset
320 SDL_cursor->area.x = (x - SDL_cursor->hot_x);
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diff changeset
321 SDL_cursor->area.y = (y - SDL_cursor->hot_y);
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diff changeset
322 SDL_DrawCursor(SDL_VideoSurface);
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diff changeset
323 SDL_UnlockCursor();
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diff changeset
324 } else if ( video->MoveWMCursor ) {
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diff changeset
325 video->MoveWMCursor(video, x, y);
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diff changeset
326 }
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diff changeset
327 }
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diff changeset
328
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diff changeset
329 /* Keep track of the current cursor colors */
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diff changeset
330 static int palette_changed = 1;
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diff changeset
331 static Uint32 pixels8[2];
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diff changeset
332
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diff changeset
333 void SDL_CursorPaletteChanged(void)
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parents:
diff changeset
334 {
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diff changeset
335 palette_changed = 1;
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parents:
diff changeset
336 }
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diff changeset
337
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diff changeset
338 void SDL_MouseRect(SDL_Rect *area)
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parents:
diff changeset
339 {
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parents:
diff changeset
340 int clip_diff;
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diff changeset
341
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
342 *area = SDL_cursor->area;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
343 if ( area->x < 0 ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
344 area->w += area->x;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
345 area->x = 0;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
346 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
347 if ( area->y < 0 ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
348 area->h += area->y;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
349 area->y = 0;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
350 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
351 clip_diff = (area->x+area->w)-SDL_VideoSurface->w;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
352 if ( clip_diff > 0 ) {
113
e21ac1dd30f1 Fixed crash if mouse is outside of the screen bounds for some reason
Sam Lantinga <slouken@lokigames.com>
parents: 77
diff changeset
353 area->w = area->w < clip_diff ? 0 : area->w-clip_diff;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
354 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
355 clip_diff = (area->y+area->h)-SDL_VideoSurface->h;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
356 if ( clip_diff > 0 ) {
113
e21ac1dd30f1 Fixed crash if mouse is outside of the screen bounds for some reason
Sam Lantinga <slouken@lokigames.com>
parents: 77
diff changeset
357 area->h = area->h < clip_diff ? 0 : area->h-clip_diff;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
358 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
359 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
360
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
361 static void SDL_DrawCursorFast(SDL_Surface *screen, SDL_Rect *area)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
362 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
363 const Uint32 pixels[2] = { 0xFFFFFFFF, 0x00000000 };
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
364 int i, w, h;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
365 Uint8 *data, datab;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
366 Uint8 *mask, maskb;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
367
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
368 data = SDL_cursor->data + area->y * SDL_cursor->area.w/8;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
369 mask = SDL_cursor->mask + area->y * SDL_cursor->area.w/8;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
370 switch (screen->format->BytesPerPixel) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
371
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
372 case 1: {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
373 Uint8 *dst;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
374 int dstskip;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
375
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
376 if ( palette_changed ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
377 pixels8[0] = SDL_MapRGB(screen->format, 255, 255, 255);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
378 pixels8[1] = SDL_MapRGB(screen->format, 0, 0, 0);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
379 palette_changed = 0;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
380 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
381 dst = (Uint8 *)screen->pixels +
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
382 (SDL_cursor->area.y+area->y)*screen->pitch +
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
383 SDL_cursor->area.x;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
384 dstskip = screen->pitch-area->w;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
385
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
386 for ( h=area->h; h; h-- ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
387 for ( w=area->w/8; w; w-- ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
388 maskb = *mask++;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
389 datab = *data++;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
390 for ( i=0; i<8; ++i ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
391 if ( maskb & 0x80 ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
392 *dst = pixels8[datab>>7];
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
393 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
394 maskb <<= 1;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
395 datab <<= 1;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
396 dst++;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
397 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
398 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
399 dst += dstskip;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
400 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
401 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
402 break;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
403
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
404 case 2: {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
405 Uint16 *dst;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
406 int dstskip;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
407
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
408 dst = (Uint16 *)screen->pixels +
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
409 (SDL_cursor->area.y+area->y)*screen->pitch/2 +
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
410 SDL_cursor->area.x;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
411 dstskip = (screen->pitch/2)-area->w;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
412
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
413 for ( h=area->h; h; h-- ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
414 for ( w=area->w/8; w; w-- ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
415 maskb = *mask++;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
416 datab = *data++;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
417 for ( i=0; i<8; ++i ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
418 if ( maskb & 0x80 ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
419 *dst = pixels[datab>>7];
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
420 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
421 maskb <<= 1;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
422 datab <<= 1;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
423 dst++;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
424 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
425 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
426 dst += dstskip;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
427 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
428 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
429 break;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
430
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
431 case 3: {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
432 Uint8 *dst;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
433 int dstskip;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
434
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
435 dst = (Uint8 *)screen->pixels +
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
436 (SDL_cursor->area.y+area->y)*screen->pitch +
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
437 SDL_cursor->area.x*3;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
438 dstskip = screen->pitch-area->w*3;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
439
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
440 for ( h=area->h; h; h-- ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
441 for ( w=area->w/8; w; w-- ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
442 maskb = *mask++;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
443 datab = *data++;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
444 for ( i=0; i<8; ++i ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
445 if ( maskb & 0x80 ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
446 memset(dst,pixels[datab>>7],3);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
447 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
448 maskb <<= 1;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
449 datab <<= 1;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
450 dst += 3;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
451 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
452 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
453 dst += dstskip;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
454 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
455 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
456 break;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
457
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
458 case 4: {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
459 Uint32 *dst;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
460 int dstskip;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
461
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
462 dst = (Uint32 *)screen->pixels +
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
463 (SDL_cursor->area.y+area->y)*screen->pitch/4 +
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
464 SDL_cursor->area.x;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
465 dstskip = (screen->pitch/4)-area->w;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
466
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
467 for ( h=area->h; h; h-- ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
468 for ( w=area->w/8; w; w-- ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
469 maskb = *mask++;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
470 datab = *data++;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
471 for ( i=0; i<8; ++i ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
472 if ( maskb & 0x80 ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
473 *dst = pixels[datab>>7];
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
474 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
475 maskb <<= 1;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
476 datab <<= 1;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
477 dst++;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
478 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
479 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
480 dst += dstskip;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
481 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
482 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
483 break;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
484 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
485 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
486
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
487 static void SDL_DrawCursorSlow(SDL_Surface *screen, SDL_Rect *area)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
488 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
489 const Uint32 pixels[2] = { 0xFFFFFF, 0x000000 };
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
490 int h;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
491 int x, minx, maxx;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
492 Uint8 *data, datab = 0;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
493 Uint8 *mask, maskb = 0;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
494 Uint8 *dst;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
495 int dstbpp, dstskip;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
496
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
497 data = SDL_cursor->data + area->y * SDL_cursor->area.w/8;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
498 mask = SDL_cursor->mask + area->y * SDL_cursor->area.w/8;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
499 dstbpp = screen->format->BytesPerPixel;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
500 dst = (Uint8 *)screen->pixels +
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
501 (SDL_cursor->area.y+area->y)*screen->pitch +
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
502 SDL_cursor->area.x*dstbpp;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
503 dstskip = screen->pitch-SDL_cursor->area.w*dstbpp;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
504
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
505 minx = area->x;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
506 maxx = area->x+area->w;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
507 if ( screen->format->BytesPerPixel == 1 ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
508 if ( palette_changed ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
509 pixels8[0] = SDL_MapRGB(screen->format, 255, 255, 255);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
510 pixels8[1] = SDL_MapRGB(screen->format, 0, 0, 0);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
511 palette_changed = 0;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
512 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
513 for ( h=area->h; h; h-- ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
514 for ( x=0; x<SDL_cursor->area.w; ++x ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
515 if ( (x%8) == 0 ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
516 maskb = *mask++;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
517 datab = *data++;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
518 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
519 if ( (x >= minx) && (x < maxx) ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
520 if ( maskb & 0x80 ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
521 memset(dst, pixels8[datab>>7], dstbpp);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
522 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
523 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
524 maskb <<= 1;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
525 datab <<= 1;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
526 dst += dstbpp;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
527 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
528 dst += dstskip;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
529 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
530 } else {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
531 for ( h=area->h; h; h-- ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
532 for ( x=0; x<SDL_cursor->area.w; ++x ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
533 if ( (x%8) == 0 ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
534 maskb = *mask++;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
535 datab = *data++;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
536 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
537 if ( (x >= minx) && (x < maxx) ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
538 if ( maskb & 0x80 ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
539 memset(dst, pixels[datab>>7], dstbpp);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
540 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
541 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
542 maskb <<= 1;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
543 datab <<= 1;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
544 dst += dstbpp;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
545 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
546 dst += dstskip;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
547 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
548 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
549 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
550
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
551 /* This handles the ugly work of converting the saved cursor background from
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
552 the pixel format of the shadow surface to that of the video surface.
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
553 This is only necessary when blitting from a shadow surface of a different
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
554 pixel format than the video surface, and using a software rendered cursor.
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
555 */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
556 static void SDL_ConvertCursorSave(SDL_Surface *screen, int w, int h)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
557 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
558 SDL_BlitInfo info;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
559 SDL_loblit RunBlit;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
560
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
561 /* Make sure we can steal the blit mapping */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
562 if ( screen->map->dst != SDL_VideoSurface ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
563 return;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
564 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
565
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
566 /* Set up the blit information */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
567 info.s_pixels = SDL_cursor->save[1];
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
568 info.s_width = w;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
569 info.s_height = h;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
570 info.s_skip = 0;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
571 info.d_pixels = SDL_cursor->save[0];
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
572 info.d_width = w;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
573 info.d_height = h;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
574 info.d_skip = 0;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
575 info.aux_data = screen->map->sw_data->aux_data;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
576 info.src = screen->format;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
577 info.table = screen->map->table;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
578 info.dst = SDL_VideoSurface->format;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
579 RunBlit = screen->map->sw_data->blit;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
580
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
581 /* Run the actual software blit */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
582 RunBlit(&info);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
583 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
584
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
585 void SDL_DrawCursorNoLock(SDL_Surface *screen)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
586 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
587 SDL_Rect area;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
588
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
589 /* Get the mouse rectangle, clipped to the screen */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
590 SDL_MouseRect(&area);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
591 if ( (area.w == 0) || (area.h == 0) ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
592 return;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
593 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
594
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
595 /* Copy mouse background */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
596 { int w, h, screenbpp;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
597 Uint8 *src, *dst;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
598
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
599 /* Set up the copy pointers */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
600 screenbpp = screen->format->BytesPerPixel;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
601 if ( (screen == SDL_VideoSurface) ||
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
602 FORMAT_EQUAL(screen->format, SDL_VideoSurface->format) ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
603 dst = SDL_cursor->save[0];
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
604 } else {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
605 dst = SDL_cursor->save[1];
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
606 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
607 src = (Uint8 *)screen->pixels + area.y * screen->pitch +
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
608 area.x * screenbpp;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
609
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
610 /* Perform the copy */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
611 w = area.w*screenbpp;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
612 h = area.h;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
613 while ( h-- ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
614 memcpy(dst, src, w);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
615 dst += w;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
616 src += screen->pitch;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
617 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
618 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
619
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
620 /* Draw the mouse cursor */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
621 area.x -= SDL_cursor->area.x;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
622 area.y -= SDL_cursor->area.y;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
623 if ( (area.x == 0) && (area.w == SDL_cursor->area.w) ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
624 SDL_DrawCursorFast(screen, &area);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
625 } else {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
626 SDL_DrawCursorSlow(screen, &area);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
627 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
628 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
629
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
630 void SDL_DrawCursor(SDL_Surface *screen)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
631 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
632 /* Lock the screen if necessary */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
633 if ( screen == NULL ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
634 return;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
635 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
636 if ( SDL_MUSTLOCK(screen) ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
637 if ( SDL_LockSurface(screen) < 0 ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
638 return;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
639 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
640 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
641
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
642 SDL_DrawCursorNoLock(screen);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
643
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
644 /* Unlock the screen and update if necessary */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
645 if ( SDL_MUSTLOCK(screen) ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
646 SDL_UnlockSurface(screen);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
647 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
648 if ( (screen == SDL_VideoSurface) &&
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
649 ((screen->flags & SDL_HWSURFACE) != SDL_HWSURFACE) ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
650 SDL_VideoDevice *video = current_video;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
651 SDL_VideoDevice *this = current_video;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
652 SDL_Rect area;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
653
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
654 SDL_MouseRect(&area);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
655
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
656 /* This can be called before a video mode is set */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
657 if ( video->UpdateRects ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
658 video->UpdateRects(this, 1, &area);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
659 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
660 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
661 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
662
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
663 void SDL_EraseCursorNoLock(SDL_Surface *screen)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
664 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
665 SDL_Rect area;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
666
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
667 /* Get the mouse rectangle, clipped to the screen */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
668 SDL_MouseRect(&area);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
669 if ( (area.w == 0) || (area.h == 0) ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
670 return;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
671 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
672
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
673 /* Copy mouse background */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
674 { int w, h, screenbpp;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
675 Uint8 *src, *dst;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
676
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
677 /* Set up the copy pointers */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
678 screenbpp = screen->format->BytesPerPixel;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
679 if ( (screen == SDL_VideoSurface) ||
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
680 FORMAT_EQUAL(screen->format, SDL_VideoSurface->format) ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
681 src = SDL_cursor->save[0];
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
682 } else {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
683 src = SDL_cursor->save[1];
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
684 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
685 dst = (Uint8 *)screen->pixels + area.y * screen->pitch +
74212992fb08 Initial revision
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686 area.x * screenbpp;
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687
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688 /* Perform the copy */
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689 w = area.w*screenbpp;
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690 h = area.h;
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691 while ( h-- ) {
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692 memcpy(dst, src, w);
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693 src += w;
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694 dst += screen->pitch;
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695 }
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696
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697 /* Perform pixel conversion on cursor background */
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698 if ( src > SDL_cursor->save[1] ) {
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699 SDL_ConvertCursorSave(screen, area.w, area.h);
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700 }
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701 }
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702 }
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703
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704 void SDL_EraseCursor(SDL_Surface *screen)
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705 {
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706 /* Lock the screen if necessary */
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707 if ( screen == NULL ) {
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708 return;
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709 }
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710 if ( SDL_MUSTLOCK(screen) ) {
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711 if ( SDL_LockSurface(screen) < 0 ) {
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712 return;
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713 }
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714 }
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parents:
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715
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716 SDL_EraseCursorNoLock(screen);
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717
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718 /* Unlock the screen and update if necessary */
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719 if ( SDL_MUSTLOCK(screen) ) {
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720 SDL_UnlockSurface(screen);
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721 }
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722 if ( (screen == SDL_VideoSurface) &&
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723 ((screen->flags & SDL_HWSURFACE) != SDL_HWSURFACE) ) {
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724 SDL_VideoDevice *video = current_video;
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725 SDL_VideoDevice *this = current_video;
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726 SDL_Rect area;
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727
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728 SDL_MouseRect(&area);
1
cf2af46e9e2a Changes since SDL 1.2.0 release
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parents: 0
diff changeset
729 if ( video->UpdateRects ) {
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diff changeset
730 video->UpdateRects(this, 1, &area);
cf2af46e9e2a Changes since SDL 1.2.0 release
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parents: 0
diff changeset
731 }
0
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732 }
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parents:
diff changeset
733 }
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parents:
diff changeset
734
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diff changeset
735 /* Reset the cursor on video mode change
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parents:
diff changeset
736 FIXME: Keep track of all cursors, and reset them all.
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737 */
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diff changeset
738 void SDL_ResetCursor(void)
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parents:
diff changeset
739 {
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740 int savelen;
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parents:
diff changeset
741
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parents:
diff changeset
742 if ( SDL_cursor ) {
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parents:
diff changeset
743 savelen = SDL_cursor->area.w*4*SDL_cursor->area.h;
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diff changeset
744 SDL_cursor->area.x = 0;
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parents:
diff changeset
745 SDL_cursor->area.y = 0;
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parents:
diff changeset
746 memset(SDL_cursor->save[0], 0, savelen);
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parents:
diff changeset
747 }
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parents:
diff changeset
748 }