1 2 /*************************************************************************** 3 * Copyright (c) 2024 Microsoft Corporation 4 * 5 * This program and the accompanying materials are made available under the 6 * terms of the MIT License which is available at 7 * https://opensource.org/licenses/MIT. 8 * 9 * SPDX-License-Identifier: MIT 10 **************************************************************************/ 11 12 13 /**************************************************************************/ 14 /**************************************************************************/ 15 /** */ 16 /** GUIX Component */ 17 /** */ 18 /** Dispaly Management (Dispaly) */ 19 /** */ 20 /**************************************************************************/ 21 22 #define GX_SOURCE_CODE 23 24 25 /* Include necessary system files. */ 26 27 #include "gx_api.h" 28 #include "gx_display.h" 29 30 /**************************************************************************/ 31 /* */ 32 /* FUNCTION RELEASE */ 33 /* */ 34 /* _gx_display_driver_4bpp_mouse_capture PORTABLE C */ 35 /* 6.1 */ 36 /* AUTHOR */ 37 /* */ 38 /* Kenneth Maxwell, Microsoft Corporation */ 39 /* */ 40 /* DESCRIPTION */ 41 /* */ 42 /* This service captures memory under mouse position. */ 43 /* */ 44 /* INPUT */ 45 /* */ 46 /* display Display control block */ 47 /* */ 48 /* OUTPUT */ 49 /* */ 50 /* CALLS */ 51 /* */ 52 /* */ 53 /* CALLED BY */ 54 /* */ 55 /* GUIX Internal Code */ 56 /* */ 57 /* RELEASE HISTORY */ 58 /* */ 59 /* DATE NAME DESCRIPTION */ 60 /* */ 61 /* 05-19-2020 Kenneth Maxwell Initial Version 6.0 */ 62 /* 09-30-2020 Kenneth Maxwell Modified comment(s), */ 63 /* resulting in version 6.1 */ 64 /* */ 65 /**************************************************************************/ 66 #if defined(GX_MOUSE_SUPPORT) 67 #if !defined(GX_HARDWARE_MOUSE_SUPPORT) _gx_display_driver_4bpp_mouse_capture(GX_DISPLAY * display)68VOID _gx_display_driver_4bpp_mouse_capture(GX_DISPLAY *display) 69 { 70 INT width; 71 INT height; 72 INT row; 73 INT column; 74 GX_UBYTE *put; 75 GX_UBYTE *putrow; 76 GX_UBYTE *getrow; 77 GX_UBYTE *get; 78 GX_PIXELMAP *map; 79 GX_RESOURCE_ID image_id; 80 GX_RECTANGLE mouse_rect; 81 GX_UBYTE getmask; 82 GX_UBYTE putmask = 0xf0; 83 GX_UBYTE pixel; 84 GX_CANVAS *canvas; 85 86 if (display -> gx_display_mouse.gx_mouse_cursor_info) 87 { 88 if (display -> gx_display_mouse.gx_mouse_capture_memory) 89 { 90 canvas = display -> gx_display_mouse.gx_mouse_canvas; 91 image_id = display -> gx_display_mouse.gx_mouse_cursor_info -> gx_mouse_cursor_image_id; 92 93 if (image_id && image_id < display -> gx_display_pixelmap_table_size) 94 { 95 map = display -> gx_display_pixelmap_table[image_id]; 96 97 mouse_rect.gx_rectangle_left = display -> gx_display_mouse.gx_mouse_position.gx_point_x; 98 mouse_rect.gx_rectangle_top = display -> gx_display_mouse.gx_mouse_position.gx_point_y; 99 mouse_rect.gx_rectangle_left = (GX_VALUE)(mouse_rect.gx_rectangle_left - display -> gx_display_mouse.gx_mouse_cursor_info -> gx_mouse_cursor_hotspot_x); 100 mouse_rect.gx_rectangle_top = (GX_VALUE)(mouse_rect.gx_rectangle_top - display -> gx_display_mouse.gx_mouse_cursor_info -> gx_mouse_cursor_hotspot_y); 101 102 mouse_rect.gx_rectangle_right = (GX_VALUE)(mouse_rect.gx_rectangle_left + map -> gx_pixelmap_width - 1); 103 mouse_rect.gx_rectangle_bottom = (GX_VALUE)(mouse_rect.gx_rectangle_top + map -> gx_pixelmap_height - 1); 104 105 if (mouse_rect.gx_rectangle_left < 0) 106 { 107 mouse_rect.gx_rectangle_left = 0; 108 } 109 if (mouse_rect.gx_rectangle_top < 0) 110 { 111 mouse_rect.gx_rectangle_top = 0; 112 } 113 if (mouse_rect.gx_rectangle_right >= canvas -> gx_canvas_x_resolution) 114 { 115 mouse_rect.gx_rectangle_right = (GX_VALUE)(canvas -> gx_canvas_x_resolution - 1); 116 } 117 if (mouse_rect.gx_rectangle_bottom >= canvas -> gx_canvas_y_resolution) 118 { 119 mouse_rect.gx_rectangle_bottom = (GX_VALUE)(canvas -> gx_canvas_y_resolution - 1); 120 } 121 width = mouse_rect.gx_rectangle_right - mouse_rect.gx_rectangle_left + 1; 122 height = mouse_rect.gx_rectangle_bottom - mouse_rect.gx_rectangle_top + 1; 123 } 124 else 125 { 126 width = height = 0; 127 } 128 129 if (width > 0 && height > 0) 130 { 131 display -> gx_display_mouse.gx_mouse_rect = mouse_rect; 132 133 getrow = (GX_UBYTE *)canvas -> gx_canvas_memory; 134 getrow += ((canvas -> gx_canvas_x_resolution + 1) >> 1) * mouse_rect.gx_rectangle_top; 135 getrow += mouse_rect.gx_rectangle_left >> 1; 136 putrow = (GX_UBYTE *)display -> gx_display_mouse.gx_mouse_capture_memory; 137 138 for (row = 0; row < height; row++) 139 { 140 if (mouse_rect.gx_rectangle_left & 1) 141 { 142 getmask = 0x0f; 143 } 144 else 145 { 146 getmask = 0xf0; 147 } 148 get = getrow; 149 put = putrow; 150 putmask = 0xf0; 151 152 for (column = 0; column < width; column++) 153 { 154 pixel = (*get) & getmask; 155 if (getmask == 0x0f) 156 { 157 get++; 158 getmask = 0xf0; 159 pixel |= (GX_UBYTE)(pixel << 4); 160 } 161 else 162 { 163 getmask = 0x0f; 164 pixel |= pixel >> 4; 165 } 166 167 *put &= (GX_UBYTE)(~putmask); 168 *put |= pixel & putmask; 169 putmask >>= 4; 170 if (putmask == 0) 171 { 172 putmask = 0xf0; 173 put++; 174 } 175 } 176 getrow += (canvas -> gx_canvas_x_resolution + 1) >> 1; 177 putrow += (width + 1) >> 1; 178 } 179 } 180 else 181 { 182 display -> gx_display_mouse.gx_mouse_rect.gx_rectangle_top = 0; 183 display -> gx_display_mouse.gx_mouse_rect.gx_rectangle_bottom = -1; 184 display -> gx_display_mouse.gx_mouse_rect.gx_rectangle_left = 0; 185 display -> gx_display_mouse.gx_mouse_rect.gx_rectangle_right = -1; 186 } 187 } 188 } 189 } 190 #endif 191 #endif 192 193
