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 21 #define GX_SOURCE_CODE 22 23 24 /* Include necessary system files. */ 25 26 #include "gx_api.h" 27 #include "gx_display.h" 28 29 /**************************************************************************/ 30 /* */ 31 /* FUNCTION RELEASE */ 32 /* */ 33 /* _gx_display_driver_32bpp_rotated_pixel_write PORTABLE C */ 34 /* 6.1.4 */ 35 /* AUTHOR */ 36 /* */ 37 /* Kenneth Maxwell, Microsoft Corporation */ 38 /* */ 39 /* DESCRIPTION */ 40 /* */ 41 /* Generic rotated 32bpp color format pixel write function. */ 42 /* */ 43 /* INPUT */ 44 /* */ 45 /* context Drawing context */ 46 /* x X coordinate */ 47 /* y Y coordinate */ 48 /* color Color of pixel to write */ 49 /* */ 50 /* OUTPUT */ 51 /* */ 52 /* None */ 53 /* */ 54 /* CALLS */ 55 /* */ 56 /* None */ 57 /* */ 58 /* CALLED BY */ 59 /* */ 60 /* GUIX Internal Code */ 61 /* */ 62 /* RELEASE HISTORY */ 63 /* */ 64 /* DATE NAME DESCRIPTION */ 65 /* */ 66 /* 02-02-2021 Kenneth Maxwell Initial Version 6.1.4 */ 67 /* */ 68 /**************************************************************************/ _gx_display_driver_32bpp_rotated_pixel_write(GX_DRAW_CONTEXT * context,INT x,INT y,GX_COLOR color)69VOID _gx_display_driver_32bpp_rotated_pixel_write(GX_DRAW_CONTEXT *context, INT x, INT y, GX_COLOR color) 70 { 71 ULONG *put = (ULONG *)context -> gx_draw_context_memory; 72 73 /* Calculate address of scan line. */ 74 if (context -> gx_draw_context_display -> gx_display_rotation_angle == GX_SCREEN_ROTATION_CW) 75 { 76 put += context -> gx_draw_context_pitch * (context -> gx_draw_context_canvas -> gx_canvas_x_resolution - x - 1); 77 78 /* Step in by y coordinate. */ 79 put += y; 80 } 81 else 82 { 83 put += context -> gx_draw_context_pitch * x; 84 85 /* Step in by y coordinate. */ 86 put += (context -> gx_draw_context_canvas -> gx_canvas_y_resolution - y - 1); 87 } 88 89 /* Write the pixel value. */ 90 *put = (ULONG)color; 91 } 92 93
