Mercurial > sdl-ios-xcode
annotate src/video/photon/SDL_ph_mouse.c @ 421:195dd37b3d86
Bugfix from Corona688: don't reference a string before we've initialized it.
Fixes crashbug on WinCE (PocketPC).
| author | Ryan C. Gordon <icculus@icculus.org> |
|---|---|
| date | Tue, 02 Jul 2002 04:07:01 +0000 |
| parents | bce7171e7a85 |
| children | 8e3ce997621c |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 2 SDL - Simple DirectMedia Layer | |
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3 Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002 Sam Lantinga |
| 0 | 4 |
| 5 This library is free software; you can redistribute it and/or | |
| 6 modify it under the terms of the GNU Library General Public | |
| 7 License as published by the Free Software Foundation; either | |
| 8 version 2 of the License, or (at your option) any later version. | |
| 9 | |
| 10 This library is distributed in the hope that it will be useful, | |
| 11 but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 13 Library General Public License for more details. | |
| 14 | |
| 15 You should have received a copy of the GNU Library General Public | |
| 16 License along with this library; if not, write to the Free | |
| 17 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
| 18 | |
| 19 Sam Lantinga | |
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20 slouken@libsdl.org |
| 0 | 21 */ |
| 22 | |
| 23 #ifdef SAVE_RCSID | |
| 24 static char rcsid = | |
| 25 "@(#) $Id$"; | |
| 26 #endif | |
| 27 | |
| 28 #include <stdlib.h> | |
| 29 #include <stdio.h> | |
| 30 #include <string.h> | |
| 31 | |
| 32 #include "SDL_error.h" | |
| 33 #include "SDL_mouse.h" | |
| 34 #include "SDL_events_c.h" | |
| 35 #include "SDL_cursor_c.h" | |
| 36 #include "SDL_ph_mouse_c.h" | |
| 37 | |
| 38 struct WMcursor { | |
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39 PhCursorDef_t *ph_cursor ; |
| 0 | 40 }; |
| 41 | |
| 42 | |
| 43 void ph_FreeWMCursor(_THIS, WMcursor *cursor) | |
| 44 { | |
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45 if (window != NULL) |
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46 { |
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47 SDL_Lock_EventThread(); |
| 0 | 48 |
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49 if (PtSetResource( window, Pt_ARG_CURSOR_TYPE, Ph_CURSOR_INHERIT, 0 ) < 0) |
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50 { |
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51 /* TODO: output error msg */ |
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52 } |
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53 |
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54 SDL_Unlock_EventThread(); |
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55 } |
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56 /* free(cursor->ph_cursor.images); */ |
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57 free(cursor); |
| 0 | 58 } |
| 59 | |
| 60 WMcursor *ph_CreateWMCursor(_THIS, | |
| 61 Uint8 *data, Uint8 *mask, int w, int h, int hot_x, int hot_y) | |
| 62 { | |
| 63 WMcursor* cursor; | |
| 64 int clen, i; | |
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65 unsigned char bit, databit, maskbit; |
| 0 | 66 |
| 67 /* Allocate and initialize the cursor memory */ | |
| 68 if ((cursor = (WMcursor*)malloc(sizeof(WMcursor))) == NULL) | |
| 69 { | |
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70 SDL_OutOfMemory(); |
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71 return(NULL); |
| 0 | 72 } |
| 73 memset(cursor,0,sizeof(WMcursor)); | |
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74 |
| 0 | 75 cursor->ph_cursor = (PhCursorDef_t *) malloc(sizeof(PhCursorDef_t) + 32*4*2); |
| 76 if(cursor->ph_cursor == NULL) | |
| 77 printf("cursor malloc failed\n"); | |
| 78 | |
| 79 memset(cursor->ph_cursor,0,(sizeof(PhCursorDef_t) + 32*4*2)); | |
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80 |
| 0 | 81 cursor->ph_cursor->hdr.type =Ph_RDATA_CURSOR; |
| 82 cursor->ph_cursor->size1.x = (short)w; | |
| 83 cursor->ph_cursor->size1.y = (short)h; | |
| 84 cursor->ph_cursor->offset1.x = (short)hot_x; | |
| 85 cursor->ph_cursor->offset1.y = (short)hot_y; | |
| 86 cursor->ph_cursor->bytesperline1 = (char)w/8; | |
| 87 cursor->ph_cursor->color1 = Pg_WHITE; | |
| 88 cursor->ph_cursor->size2.x = (short)w; | |
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89 cursor->ph_cursor->size2.y = (short)h; |
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90 cursor->ph_cursor->offset2.x = (short)hot_x; |
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91 cursor->ph_cursor->offset2.y = (short)hot_y; |
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92 cursor->ph_cursor->bytesperline2 = (char)w/8; |
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93 cursor->ph_cursor->color2 = Pg_BLACK; |
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94 |
| 0 | 95 clen = (w/8)*h; |
| 96 | |
| 97 /* Copy the mask and the data to different | |
| 98 bitmap planes */ | |
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99 for ( i=0; i<clen; ++i ) |
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100 { |
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101 for ( bit = 0; bit < 8; bit++ ) |
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102 { |
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103 databit = data[i] & (1 << bit); |
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104 maskbit = mask[i] & (1 << bit); |
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105 |
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106 cursor->ph_cursor->images[i] |= |
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107 (databit == 0) ? maskbit : 0; |
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108 /* If the databit != 0, treat it as a black pixel and |
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109 * ignore the maskbit (can't do an inverted color) */ |
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110 cursor->ph_cursor->images[i+clen] |= databit; |
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111 } |
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112 } |
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113 |
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114 /* #bytes following the hdr struct */ |
| 0 | 115 cursor->ph_cursor->hdr.len =sizeof(PhCursorDef_t) + clen*2 - sizeof(PhRegionDataHdr_t); |
| 116 | |
| 117 return (cursor); | |
| 118 } | |
| 119 | |
| 120 | |
| 121 PhCursorDef_t ph_GetWMPhCursor(WMcursor *cursor) | |
| 122 { | |
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123 return(*cursor->ph_cursor); |
| 0 | 124 } |
| 125 | |
| 126 int ph_ShowWMCursor(_THIS, WMcursor *cursor) | |
| 127 { | |
| 128 PtArg_t args[3]; | |
| 129 int nargs = 0; | |
| 130 short cursor_is_defined = 0; | |
| 131 | |
| 132 /* Don't do anything if the display is gone */ | |
| 133 if ( window == NULL ) { | |
| 134 return(0); | |
| 135 } | |
| 136 | |
| 137 /* Set the photon cursor cursor, or blank if cursor is NULL */ | |
| 138 if ( window ) { | |
| 139 | |
| 140 if ( cursor != NULL ) { | |
| 141 PtSetArg( &args[0], Pt_ARG_CURSOR_TYPE, Ph_CURSOR_BITMAP, 0 ); | |
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142 /* Could set next to any PgColor_t value */ |
| 0 | 143 PtSetArg( &args[1], Pt_ARG_CURSOR_COLOR,Ph_CURSOR_DEFAULT_COLOR , 0 ); |
| 144 PtSetArg( &args[2], Pt_ARG_BITMAP_CURSOR, cursor->ph_cursor, (cursor->ph_cursor->hdr.len + sizeof(PhRegionDataHdr_t)) ); | |
| 145 nargs = 3; | |
| 146 cursor_is_defined = 1; | |
| 147 } | |
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148 else /* Ph_CURSOR_NONE */ |
| 0 | 149 { |
| 150 PtSetArg( &args[0], Pt_ARG_CURSOR_TYPE,Ph_CURSOR_NONE, 0); | |
| 151 nargs = 1; | |
| 152 cursor_is_defined = 1; | |
| 153 } | |
| 154 if (cursor_is_defined) | |
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155 { |
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156 SDL_Lock_EventThread(); |
| 0 | 157 |
| 158 if (PtSetResources( window, nargs, args ) < 0 ) | |
| 159 { | |
| 160 return(0); | |
| 161 } | |
| 162 | |
| 163 SDL_Unlock_EventThread(); | |
| 164 } | |
| 165 else | |
| 166 return(0); | |
| 167 } | |
| 168 return(1); | |
| 169 } | |
| 170 | |
| 171 void ph_WarpWMCursor(_THIS, Uint16 x, Uint16 y) | |
| 172 { | |
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173 short abs_x, abs_y; |
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174 |
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175 SDL_Lock_EventThread(); |
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176 PtGetAbsPosition( window, &abs_x, &abs_y ); |
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177 PhMoveCursorAbs( PhInputGroup(NULL), x + abs_x, y + abs_y ); |
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178 SDL_Unlock_EventThread(); |
| 0 | 179 } |
| 180 | |
| 181 | |
| 182 void ph_CheckMouseMode(_THIS) | |
| 183 { | |
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184 /* If the mouse is hidden and input is grabbed, we use relative mode */ |
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185 if ( !(SDL_cursorstate & CURSOR_VISIBLE) && (this->input_grab != SDL_GRAB_OFF)) |
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186 { |
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187 mouse_relative = 1; |
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188 } |
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189 else |
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190 { |
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191 mouse_relative = 0; |
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192 } |
| 0 | 193 } |