annotate src/video/bwindow/SDL_sysmouse.cc @ 1358:c71e05b4dc2e

More header massaging... works great on Windows. ;-)
author Sam Lantinga <slouken@libsdl.org>
date Fri, 10 Feb 2006 06:48:43 +0000
parents 604d73db6802
children 376665398b25
rev   line source
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1 /*
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2 SDL - Simple DirectMedia Layer
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3 Copyright (C) 1997-2006 Sam Lantinga
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4
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5 This library is free software; you can redistribute it and/or
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6 modify it under the terms of the GNU Lesser General Public
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7 License as published by the Free Software Foundation; either
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8 version 2.1 of the License, or (at your option) any later version.
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9
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10 This library is distributed in the hope that it will be useful,
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11 but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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13 Lesser General Public License for more details.
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14
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15 You should have received a copy of the GNU Lesser General Public
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16 License along with this library; if not, write to the Free Software
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17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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18
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19 Sam Lantinga
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20 slouken@libsdl.org
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21 */
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22
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23 #include <AppKit.h>
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24 #include <GameKit.h>
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25
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26 #include "SDL_BWin.h"
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27
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28 extern "C" {
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29
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30 #include "SDL_sysmouse_c.h"
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31
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32 /* Convert bits to padded bytes */
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33 #define PADDED_BITS(bits) ((bits+7)/8)
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34
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35 /* The implementation dependent data for the window manager cursor */
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36 struct WMcursor {
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37 char *bits;
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38 };
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39
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40 /* Can this be done in the BeOS? */
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41 WMcursor *BE_CreateWMCursor(_THIS,
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42 Uint8 *data, Uint8 *mask, int w, int h, int hot_x, int hot_y)
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43 {
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44 WMcursor *cursor;
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45 int allowed_x;
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46 int allowed_y;
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47 int run, pad, i;
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48 char *cptr;
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49
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50 allowed_x = 16; /* BeOS limitation */
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51 allowed_y = 16; /* BeOS limitation */
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52 if ( (w > allowed_x) || (h > allowed_y) ) {
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53 SDL_SetError("Only cursors of dimension (%dx%d) are allowed",
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54 allowed_x, allowed_y);
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55 return(NULL);
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56 }
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57
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58 /* Allocate the cursor */
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59 cursor = (WMcursor *)SDL_malloc(sizeof(WMcursor));
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60 if ( cursor == NULL ) {
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61 SDL_OutOfMemory();
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62 return(NULL);
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63 }
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64 cursor->bits = (char *)SDL_malloc(4+2*((allowed_x/8)*allowed_y));
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65 if ( cursor->bits == NULL ) {
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66 SDL_free(cursor);
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67 SDL_OutOfMemory();
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68 return(NULL);
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69 }
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70 cursor->bits[0] = allowed_y; /* Size of the cursor */
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71 cursor->bits[1] = 1; /* Bit depth of cursor */
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72 cursor->bits[2] = hot_y;
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73 cursor->bits[3] = hot_x;
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74 cptr = &cursor->bits[4];
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75
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76 /* Pad out to the normal cursor size */
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77 run = PADDED_BITS(w);
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78 pad = PADDED_BITS(allowed_x)-run;
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79 for ( i=0; i<h; ++i ) {
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80 SDL_memcpy(cptr, data, run);
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81 SDL_memset(cptr+run, 0, pad);
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82 data += run;
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83 cptr += (run+pad);
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84 }
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85 for ( ; i<allowed_y; ++i ) {
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86 SDL_memset(cptr, 0, run+pad);
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87 cptr += (run+pad);
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88 }
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89 for ( i=0; i<h; ++i ) {
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90 /* FIXME: The mask should be OR'd with the data to turn
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91 inverted color pixels black, since inverted color pixels
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92 aren't supported under BeOS.
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93 */
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94 SDL_memcpy(cptr, mask, run);
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95 SDL_memset(cptr+run, 0, pad);
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96 mask += run;
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97 cptr += (run+pad);
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98 }
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99 for ( ; i<allowed_y; ++i ) {
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100 SDL_memset(cptr, 0, run+pad);
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101 cptr += (run+pad);
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102 }
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103 return(cursor);
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104 }
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105
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106 int BE_ShowWMCursor(_THIS, WMcursor *cursor)
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107 {
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108 if ( be_app->Lock() ) {
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109 if ( cursor == NULL ) {
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110 if ( SDL_BlankCursor != NULL ) {
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111 be_app->SetCursor(SDL_BlankCursor->bits);
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112 }
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113 } else {
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114 be_app->SetCursor(cursor->bits);
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115 }
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116 be_app->Unlock();
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117 }
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118 return(1);
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119 }
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120
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121 void BE_FreeWMCursor(_THIS, WMcursor *cursor)
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122 {
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123 SDL_free(cursor->bits);
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124 SDL_free(cursor);
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125 }
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126
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127 /* Implementation by Christian Bauer <cbauer@student.physik.uni-mainz.de> */
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128 void BE_WarpWMCursor(_THIS, Uint16 x, Uint16 y)
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129 {
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130 BPoint pt(x, y);
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131 SDL_Win->Lock();
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132 SDL_Win->ConvertToScreen(&pt);
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133 SDL_Win->Unlock();
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134 set_mouse_position((int32)pt.x, (int32)pt.y);
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135 }
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136
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137 }; /* Extern C */