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 /* Include necessary system files. */ 23 24 #include "gx_api.h" 25 #include "gx_display.h" 26 27 /**************************************************************************/ 28 /* */ 29 /* FUNCTION RELEASE */ 30 /* */ 31 /* _gx_display_driver_32bpp_horizontal_pattern_line_draw */ 32 /* PORTABLE C */ 33 /* 6.1 */ 34 /* AUTHOR */ 35 /* */ 36 /* Kenneth Maxwell, Microsoft Corporation */ 37 /* */ 38 /* DESCRIPTION */ 39 /* */ 40 /* Generic 32bpp color format horizontal pattern line draw function. */ 41 /* */ 42 /* INPUT */ 43 /* */ 44 /* context Drawing context */ 45 /* xstart x-coord of left endpoint */ 46 /* xend x-coord of right endpoint */ 47 /* ypos y-coord of line top */ 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 /* 05-19-2020 Kenneth Maxwell Initial Version 6.0 */ 66 /* 09-30-2020 Kenneth Maxwell Modified comment(s), */ 67 /* resulting in version 6.1 */ 68 /* */ 69 /**************************************************************************/ _gx_display_driver_32bpp_horizontal_pattern_line_draw(GX_DRAW_CONTEXT * context,INT xstart,INT xend,INT ypos)70VOID _gx_display_driver_32bpp_horizontal_pattern_line_draw(GX_DRAW_CONTEXT *context, INT xstart, INT xend, INT ypos) 71 { 72 INT column; 73 ULONG *put; 74 ULONG *rowstart; 75 ULONG pattern; 76 ULONG mask; 77 ULONG on_color; 78 ULONG off_color; 79 80 INT len = xend - xstart + 1; 81 82 /* pick up start address of canvas memory */ 83 rowstart = (ULONG *)context -> gx_draw_context_memory; 84 85 /* calculate start of row address */ 86 rowstart += context -> gx_draw_context_pitch * ypos; 87 88 /* calculate pixel address */ 89 rowstart += xstart; 90 /* draw 1-pixel hi lines to fill width */ 91 92 /* pick up the requested pattern and mask */ 93 pattern = context -> gx_draw_context_brush.gx_brush_line_pattern; 94 mask = context -> gx_draw_context_brush.gx_brush_pattern_mask; 95 on_color = (ULONG)context -> gx_draw_context_brush.gx_brush_line_color; 96 off_color = (ULONG)context -> gx_draw_context_brush.gx_brush_fill_color; 97 98 put = rowstart; 99 100 /* draw one line, left to right */ 101 for (column = 0; column < len; column++) 102 { 103 if (pattern & mask) 104 { 105 *put++ = on_color; 106 } 107 else 108 { 109 *put++ = off_color; 110 } 111 mask >>= 1; 112 if (!mask) 113 { 114 mask = 0x80000000; 115 } 116 } 117 118 /* save current masks value back to brush */ 119 context -> gx_draw_context_brush.gx_brush_pattern_mask = mask; 120 } 121 122
