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annotate src/video/ps2gs/SDL_gsmouse.c @ 1312:c9b51268668f

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Updated copyright information and removed rcs id lines (problematic in branch merges) I batch edited these files, so please let me know if I've accidentally removed anybody's credit here.
author Sam Lantinga <slouken@libsdl.org>
date Wed, 01 Feb 2006 06:32:25 +0000
parents e8157fcb3114
children 604d73db6802
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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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 <stdlib.h>
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24 #include <stdio.h>
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25 #include <sys/ioctl.h>
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26
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27 #include "SDL_error.h"
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28 #include "SDL_mouse.h"
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29 #include "SDL_events_c.h"
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30 #include "SDL_cursor_c.h"
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31 #include "SDL_gsvideo.h"
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32 #include "SDL_gsmouse_c.h"
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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 int unused;
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38 };
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39
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40 /* There isn't any implementation dependent data */
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41 void GS_FreeWMCursor(_THIS, WMcursor *cursor)
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42 {
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43 return;
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44 }
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45
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46 /* There isn't any implementation dependent data */
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47 WMcursor *GS_CreateWMCursor(_THIS,
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48 Uint8 *data, Uint8 *mask, int w, int h, int hot_x, int hot_y)
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49 {
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50 return((WMcursor *)0x01);
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51 }
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52
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53 static void GS_MoveCursor(_THIS, SDL_Cursor *cursor, int x, int y)
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54 {
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55 SDL_Surface *screen;
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56 struct ps2_image image;
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57 SDL_Rect area;
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58 int mouse_y1, mouse_y2;
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59 void *saved_pixels;
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60 int screen_updated;
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61
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62 /* Lock so we don't interrupt an update with mouse motion */
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63 SDL_LockCursor();
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64
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65 /* Make sure any pending DMA has completed */
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66 if ( dma_pending ) {
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67 ioctl(console_fd, PS2IOC_SENDQCT, 1);
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68 dma_pending = 0;
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69 }
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71 /* Remove the cursor image from the DMA area */
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72 screen = this->screen;
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73 saved_pixels = screen->pixels;
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74 screen->pixels = mapped_mem + screen->offset;
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75 screen_updated = 0;
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76 if ( cursor_drawn ) {
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77 SDL_EraseCursorNoLock(screen);
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78 cursor_drawn = 0;
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79 screen_updated = 1;
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80 }
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81
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82 /* Save the current mouse area */
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83 SDL_MouseRect(&area);
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84 mouse_y1 = area.y;
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85 mouse_y2 = area.y+area.h;
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86
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87 /* Only draw the new cursor if there was one passed in */
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88 if ( cursor ) {
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89 /* Set the new location */
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90 cursor->area.x = (x - cursor->hot_x);
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91 cursor->area.y = (y - cursor->hot_y);
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92
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93 /* Draw the cursor at the new location */
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94 if ( (SDL_cursorstate & CURSOR_VISIBLE) && screen->pixels ) {
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95 SDL_DrawCursorNoLock(screen);
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96 cursor_drawn = 1;
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97 screen_updated = 1;
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98 }
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99 }
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100 screen->pixels = saved_pixels;
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101
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102 /* Update the affected area of the screen */
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103 if ( screen_updated ) {
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104 SDL_MouseRect(&area);
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105 if ( area.y < mouse_y1 ) {
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106 mouse_y1 = area.y;
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107 }
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108 if ( (area.y+area.h) > mouse_y2 ) {
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109 mouse_y2 = area.y+area.h;
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110 }
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111 image = screen_image;
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112 image.y += screen->offset / screen->pitch + mouse_y1;
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113 image.h = mouse_y2 - mouse_y1;
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114 image.ptr = mapped_mem +
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115 (image.y - screen_image.y) * screen->pitch;
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116 ioctl(console_fd, PS2IOC_LOADIMAGE, &image);
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117
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118 /* Need to scale offscreen image to TV output */
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119 if ( image.y > 0 ) {
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120 scaleimage_nonblock(console_fd,
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121 tex_tags_mem, scale_tags_mem);
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122 }
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123 }
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124
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125 /* We're finished */
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126 SDL_UnlockCursor();
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127 }
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128
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129 void GS_MoveWMCursor(_THIS, int x, int y)
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130 {
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131 GS_MoveCursor(this, SDL_cursor, x, y);
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132 }
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133
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134 int GS_ShowWMCursor(_THIS, WMcursor *wmcursor)
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135 {
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136 SDL_Cursor *cursor;
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137 int x, y;
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138
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139 /* Draw the cursor at the appropriate location */
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140 SDL_GetMouseState(&x, &y);
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141 if ( wmcursor ) {
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142 cursor = SDL_cursor;
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143 } else {
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144 cursor = NULL;
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145 }
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146 GS_MoveCursor(this, cursor, x, y);
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147 return(1);
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148 }