1 /*************************************************************************** 2 * Copyright (c) 2024 Microsoft Corporation 3 * 4 * This program and the accompanying materials are made available under the 5 * terms of the MIT License which is available at 6 * https://opensource.org/licenses/MIT. 7 * 8 * SPDX-License-Identifier: MIT 9 **************************************************************************/ 10 11 12 /**************************************************************************/ 13 /**************************************************************************/ 14 /** */ 15 /** GUIX Component */ 16 /** */ 17 /** Display Management (Display) */ 18 /** */ 19 /**************************************************************************/ 20 #define GX_SOURCE_CODE 21 22 23 /* Include necessary system files. */ 24 25 #include "gx_api.h" 26 #include "gx_display.h" 27 28 /**************************************************************************/ 29 /* */ 30 /* FUNCTION RELEASE */ 31 /* */ 32 /* _gx_display_driver_8bpp_rotated_pixel_write PORTABLE C */ 33 /* 6.1.4 */ 34 /* AUTHOR */ 35 /* */ 36 /* Kenneth Maxwell, Microsoft Corporation */ 37 /* */ 38 /* DESCRIPTION */ 39 /* */ 40 /* Generic 8bpp color format rotated pixel write function. */ 41 /* */ 42 /* INPUT */ 43 /* */ 44 /* context Drawing context */ 45 /* x X coordinate */ 46 /* y Y coordinate */ 47 /* color Color of pixel to write */ 48 /* */ 49 /* OUTPUT */ 50 /* */ 51 /* None */ 52 /* */ 53 /* CALLS */ 54 /* */ 55 /* None */ 56 /* */ 57 /* CALLED BY */ 58 /* */ 59 /* GUIX Internal Code */ 60 /* */ 61 /* RELEASE HISTORY */ 62 /* */ 63 /* DATE NAME DESCRIPTION */ 64 /* */ 65 /* 02-02-2021 Kenneth Maxwell Initial Version 6.1.4 */ 66 /* */ 67 /**************************************************************************/ _gx_display_driver_8bpp_rotated_pixel_write(GX_DRAW_CONTEXT * context,INT x,INT y,GX_COLOR color)68VOID _gx_display_driver_8bpp_rotated_pixel_write(GX_DRAW_CONTEXT *context, INT x, INT y, GX_COLOR color) 69 { 70 GX_UBYTE *put = (GX_UBYTE *)context -> gx_draw_context_memory; 71 72 /* Calculate address of scan line. */ 73 if (context -> gx_draw_context_display -> gx_display_rotation_angle == GX_SCREEN_ROTATION_CW) 74 { 75 put += context -> gx_draw_context_pitch * (context -> gx_draw_context_canvas -> gx_canvas_x_resolution - x - 1); 76 77 /* Step in by y coordinate. */ 78 put += y; 79 } 80 else 81 { 82 put += context -> gx_draw_context_pitch * x; 83 84 /* Step in by y coordinate. */ 85 put += (context -> gx_draw_context_canvas -> gx_canvas_y_resolution - y - 1); 86 } 87 88 /* write the pixel value */ 89 *put = (GX_UBYTE)color; 90 } 91 92
