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annotate src/video/riscos/SDL_riscosmouse.c @ 1076:8d3b95ece376

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[PATCH] SDL_GetVideoMode() do not find the best video mode The current GetVideoMode() function stops at the first mode which has any dimensions smaller than the one asked, and gives the previous in the list. If I ask 336x224 with this list: 768x480 768x240 640x400 640x200 384x480 384x240 320x400 320x200 SDL will give me 640x400, because 640x200 as height smaller than what I asked. However the best mode is the smaller which has both dimensions bigger than the one asked (384x240 in my example). This patch fixes this, plus it does not rely on a sorted video mode list.
author Patrice Mandin <patmandin@gmail.com>
date Sun, 12 Jun 2005 16:12:55 +0000
parents 974ba6ae0fa3
children d90b362628ea
rev   line source
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1 /*
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2 SDL - Simple DirectMedia Layer
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b8d311d90021 Updated copyright information for 2004 (Happy New Year!)
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3 Copyright (C) 1997-2004 Sam Lantinga
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4
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5 This library is free software; you can redistribute it and/or
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6 modify it under the terms of the GNU Library General Public
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7 License as published by the Free Software Foundation; either
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8 version 2 of the License, or (at your option) any later version.
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9
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10 This library is distributed in the hope that it will be useful,
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11 but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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13 Library General Public License for more details.
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14
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15 You should have received a copy of the GNU Library General Public
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16 License along with this library; if not, write to the Free
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17 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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18
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19 Sam Lantinga
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20 slouken@devolution.com
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21 */
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22
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23 /*
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24 File added by Alan Buckley (alan_baa@hotmail.com) for RISC OS compatability
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25 27 March 2003
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26
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27 Implements mouse cursor shape definitions and positioning
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28 */
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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
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33 #include "SDL_error.h"
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34 #include "SDL_mouse.h"
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35 #include "SDL_events_c.h"
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36
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37 #include "SDL_riscosmouse_c.h"
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38
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39 #include "kernel.h"
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40 #include "swis.h"
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41
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42 static WMcursor *current_cursor = NULL;
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43
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44 extern int mouseInWindow;
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45
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46 void RISCOS_FreeWMCursor(_THIS, WMcursor *cursor)
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47 {
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48 free(cursor->data);
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49 free(cursor);
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50 }
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51
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52 WMcursor *RISCOS_CreateWMCursor(_THIS,
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53 Uint8 *data, Uint8 *mask, int w, int h, int hot_x, int hot_y)
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54 {
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55 WMcursor *cursor;
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56 Uint8 *cursor_data;
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57 Uint8 *ptr;
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58 int i,j,k;
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59 int data_byte, mask_byte;
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60
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61 /* Check to make sure the cursor size is okay */
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62 if ( (w > 32) || (h > 32) ) {
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63 SDL_SetError("Only with width and height <= 32 pixels are allowed");
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64 return(NULL);
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65 }
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66
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67 /* Allocate the cursor */
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68 cursor = (WMcursor *)malloc(sizeof(*cursor));
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69 if ( cursor == NULL ) {
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70 SDL_SetError("Out of memory");
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71 return(NULL);
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72 }
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73
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74 /* Note: SDL says width must be a multiple of 8 */
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75 cursor_data = malloc(w/4 * h);
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76 if (cursor_data == NULL)
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77 {
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78 free(cursor);
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79 SDL_SetError("Out of memory");
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80 return(NULL);
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81 }
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82
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83 cursor->w = w;
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84 cursor->h = h;
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85 cursor->hot_x = hot_x;
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86 cursor->hot_y = hot_y;
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87 cursor->data = cursor_data;
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88
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89
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90 /* Data / Mask Resulting pixel on screen
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91 0 / 1 White
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92 1 / 1 Black
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93 0 / 0 Transparent
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94 1 / 0 Inverted color if possible, black if not.
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95 */
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96 ptr = cursor_data;
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97
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98 for ( i=0; i<h; ++i )
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99 {
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100 for (j = 0; j < w/8; ++j)
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101 {
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102 data_byte = *data;
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103 mask_byte = *mask;
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104 *ptr++ = 0; /* Sets whole byte transparent */
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105 *ptr = 0;
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106 for (k = 0; k < 8; k++)
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107 {
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108 (*ptr) <<= 2;
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109 if (data_byte & 1) *ptr |= 3; /* Black or inverted */
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110 else if(mask_byte & 1) *ptr |= 1; /* White */
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111 if ((k&3) == 3) ptr--;
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112 data_byte >>= 1;
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113 mask_byte >>= 1;
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114 }
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115
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116 ptr+=3;
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117 data++;
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118 mask++;
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119 }
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120 }
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121
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122 return(cursor);
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123 }
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124
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125 int RISCOS_ShowWMCursor(_THIS, WMcursor *cursor)
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126 {
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127 if (cursor == NULL)
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128 {
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129 _kernel_osbyte(106,0,0);
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130 current_cursor = NULL;
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131 } else
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132 {
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133 if (current_cursor == NULL)
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134 {
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135 /* First time set up the mouse colours */
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136 Uint8 block[5];
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137
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138 /* Set up colour 1 as white */
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139 block[0] = 1; /* Colour to change 1 - 3 */
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140 block[1] = 25; /* Set pointer colour */
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141 block[2] = 255; /* red component*/
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142 block[3] = 255; /* green component */
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
143 block[4] = 255; /* blue component*/
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
144 _kernel_osword(12, (int *)block);
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
145
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
146 /* Set colour 3 to back */
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
147 block[0] = 3; /* Colour to change 1 - 3 */
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parents:
diff changeset
148 block[1] = 25; /* Set pointer colour*/
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
149 block[2] = 0; /* red component*/
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
150 block[3] = 0; /* green component */
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
151 block[4] = 0; /* blue component*/
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
152 _kernel_osword(12, (int *)block);
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
153 }
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
154
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
155 if (cursor != current_cursor)
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
156 {
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
157 Uint8 cursor_def[10];
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
158
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
159 cursor_def[0] = 0;
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
160 cursor_def[1] = 2; /* Use shape number 2 */
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
161 cursor_def[2] = cursor->w/4; /* Width in bytes */
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
162 cursor_def[3] = cursor->h; /* Height (h) in pixels */
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
163 cursor_def[4] = cursor->hot_x; /* ActiveX in pixels from left */
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
164 cursor_def[5] = cursor->hot_y; /* ActiveY in pixels from top */
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
165 cursor_def[6] = ((int)(cursor->data) & 0xFF); /* Least significant byte of pointer to data */
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
166 cursor_def[7] = ((int)(cursor->data) >> 8) & 0xFF; /* ... */
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
167 cursor_def[8] = ((int)(cursor->data) >> 16) & 0xFF; /* ... */
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
168 cursor_def[9] = ((int)(cursor->data) >> 24) & 0xFF; /* Most significant byte of pointer to data */
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parents:
diff changeset
169
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
170 if (_kernel_osword(21, (int *)cursor_def) == 0)
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parents:
diff changeset
171 {
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
172 SDL_SetError("RISCOS couldn't create the cursor to show");
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
173 return(0);
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
174 }
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
175 current_cursor = cursor;
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
176 }
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
177
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
178 if ((this->screen->flags & SDL_FULLSCREEN) || mouseInWindow) _kernel_osbyte(106, 2, 0);
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
179 }
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
180
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
181 return(1);
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
182 }
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
183
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
184 void FULLSCREEN_WarpWMCursor(_THIS, Uint16 x, Uint16 y)
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Sam Lantinga <slouken@libsdl.org>
parents:
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185 {
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
186 Uint8 move_block[5];
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
187 int eig_block[3];
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
188 _kernel_swi_regs regs;
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
189 int os_x, os_y;
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parents:
diff changeset
190
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
191 eig_block[0] = 4; /* X eig factor */
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parents:
diff changeset
192 eig_block[1] = 5; /* Y eig factor */
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parents:
diff changeset
193 eig_block[2] = -1; /* End of list of variables to request */
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194
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
195 regs.r[0] = (int)eig_block;
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parents:
diff changeset
196 regs.r[1] = (int)eig_block;
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
197 _kernel_swi(OS_ReadVduVariables, &regs, &regs);
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parents:
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198
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
199 os_x = x << eig_block[0];
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
200 os_y = y << eig_block[1];
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parents:
diff changeset
201
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
202 move_block[0] = 3; /* Move cursor */
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
203 move_block[1] = os_x & 0xFF;
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
204 move_block[2] = (os_x >> 8) & 0xFF;
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parents:
diff changeset
205 move_block[3] = os_y & 0xFF;
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
206 move_block[4] = (os_y >> 8) & 0xFF;
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parents:
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207
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
208 _kernel_osword(21, (int *)move_block);
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
209 SDL_PrivateMouseMotion(0, 0, x, y);
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
210 }
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parents:
diff changeset
211
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parents:
diff changeset
212
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
213 /* Reshow cursor when mouse re-enters the window */
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
214 void WIMP_ReshowCursor(_THIS)
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
215 {
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diff changeset
216 WMcursor *cursor = current_cursor;
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diff changeset
217 current_cursor = NULL;
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Sam Lantinga <slouken@libsdl.org>
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diff changeset
218 RISCOS_ShowWMCursor(this, cursor);
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
219 }
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Sam Lantinga <slouken@libsdl.org>
parents:
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220
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Sam Lantinga <slouken@libsdl.org>
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diff changeset
221 extern int mouseInWindow;
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Sam Lantinga <slouken@libsdl.org>
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diff changeset
222
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
223 void WIMP_WarpWMCursor(_THIS, Uint16 x, Uint16 y)
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parents:
diff changeset
224 {
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parents:
diff changeset
225 _kernel_swi_regs regs;
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
226 int window_state[9];
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
227 char block[5];
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
228 int osX, osY;
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diff changeset
229
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Sam Lantinga <slouken@libsdl.org>
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diff changeset
230 window_state[0] = this->hidden->window_handle;
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
231 regs.r[1] = (unsigned int)window_state;
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parents:
diff changeset
232 _kernel_swi(Wimp_GetWindowState, &regs, &regs);
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diff changeset
233
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
234 osX = (x << this->hidden->xeig) + window_state[1];
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parents:
diff changeset
235 osY = window_state[4] - (y << this->hidden->yeig);
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parents:
diff changeset
236
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
237 block[0] = 3;
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
238 block[1] = osX & 0xFF;
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
239 block[2] = (osX >> 8) & 0xFF;
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
240 block[3] = osY & 0xFF;
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
241 block[4] = (osY >> 8) & 0xFF;
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
242
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
243 regs.r[0] = 21;
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
244 regs.r[1] = (int)block;
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
245 _kernel_swi(OS_Word, &regs, &regs);
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
246 SDL_PrivateMouseMotion(0, 0, x, y);
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
247 }
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
248
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
249 int WIMP_ShowWMCursor(_THIS, WMcursor *cursor)
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parents:
diff changeset
250 {
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
251 if (mouseInWindow) return RISCOS_ShowWMCursor(this, cursor);
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parents:
diff changeset
252 return 1;
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
253 }
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
254
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
255 SDL_GrabMode RISCOS_GrabInput(_THIS, SDL_GrabMode mode)
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
256 {
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
257 /* In fullscreen mode we don't need to do anything */
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
258 if (mode < SDL_GRAB_FULLSCREEN)
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
259 {
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
260 _kernel_swi_regs regs;
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
261 unsigned char block[9];
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
262 block[0] = 1; /* Define mouse cursor bounding block */
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
263
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
264 if ( mode == SDL_GRAB_OFF )
550bccdf04bd Added initial support for RISC OS (thanks Peter Naulls!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
265 {
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
266 /* Clip to whole screen */
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
267
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
268 int r = (this->hidden->screen_width << this->hidden->xeig) - 1;
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
269 int t = (this->hidden->screen_height << this->hidden->yeig) - 1;
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
270
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
271 block[1] = 0; block[2] = 0; /* Left*/
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
272 block[3] = 0; block[4] = 0; /* Bottom */
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
273 block[5] = r & 0xFF; block[6] = (r >> 8) & 0xFF; /* Right */
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
274 block[7] = t & 0xFF; block[8] = (t >> 8) & 0xFF; /* Top */
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
275 } else
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
276 {
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
277 /* Clip to window */
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
278 unsigned char window_state[36];
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
279
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
280 *((int *)window_state) = this->hidden->window_handle;
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Sam Lantinga <slouken@libsdl.org>
parents:
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281 regs.r[1] = (unsigned int)window_state;
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282 _kernel_swi(Wimp_GetWindowState, &regs, &regs);
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283
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284 block[1] = window_state[4];
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285 block[2] = window_state[5];
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286 block[3] = window_state[8];
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287 block[4] = window_state[9];
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288 block[5] = window_state[12];
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289 block[6] = window_state[13];
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290 block[7] = window_state[16];
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291 block[8] = window_state[17];
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292
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293 }
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294
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295 regs.r[0] = 21; /* OS word code */
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296 regs.r[1] = (int)block;
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297 _kernel_swi(OS_Word, &regs, &regs);
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298 }
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299
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300 return mode;
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301 }