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 /** Line Chart Management (Line Chart) */ 18 /** */ 19 /**************************************************************************/ 20 21 #define GX_SOURCE_CODE 22 23 24 /* Include necessary system files. */ 25 26 #include "gx_api.h" 27 #include "gx_context.h" 28 #include "gx_canvas.h" 29 #include "gx_window.h" 30 #include "gx_line_chart.h" 31 32 33 /**************************************************************************/ 34 /* */ 35 /* FUNCTION RELEASE */ 36 /* */ 37 /* _gx_line_chart_data_draw PORTABLE C */ 38 /* 6.1 */ 39 /* AUTHOR */ 40 /* */ 41 /* Kenneth Maxwell, Microsoft Corporation */ 42 /* */ 43 /* DESCRIPTION */ 44 /* */ 45 /* This function draws the chart data line */ 46 /* */ 47 /* INPUT */ 48 /* */ 49 /* chart Line chart */ 50 /* */ 51 /* OUTPUT */ 52 /* */ 53 /* None */ 54 /* */ 55 /* CALLS */ 56 /* */ 57 /* _gx_line_chart_y_scale_calculate */ 58 /* _gx_context_brush_width_set */ 59 /* _gx_context_brush_define */ 60 /* _gx_canvas_line_draw */ 61 /* */ 62 /* CALLED BY */ 63 /* */ 64 /* Application Code */ 65 /* */ 66 /* RELEASE HISTORY */ 67 /* */ 68 /* DATE NAME DESCRIPTION */ 69 /* */ 70 /* 05-19-2020 Kenneth Maxwell Initial Version 6.0 */ 71 /* 09-30-2020 Kenneth Maxwell Modified comment(s), */ 72 /* resulting in version 6.1 */ 73 /* */ 74 /**************************************************************************/ _gx_line_chart_data_draw(GX_LINE_CHART * chart)75VOID _gx_line_chart_data_draw(GX_LINE_CHART *chart) 76 { 77 INT x_pos; 78 INT last_x_pos; 79 INT x_step; 80 INT y_scale; 81 INT y_pos; 82 INT index; 83 INT last_y_pos; 84 GX_RECTANGLE chart_bound; 85 GX_LINE_CHART_INFO *chart_info; 86 87 chart_info = &chart -> gx_line_chart_info; 88 89 if (chart_info -> gx_line_chart_active_data_count <= 0 || 90 chart_info -> gx_line_chart_data == GX_NULL) 91 { 92 return; 93 } 94 95 chart_bound = chart -> gx_widget_size; 96 chart_bound.gx_rectangle_left = (GX_VALUE)(chart_bound.gx_rectangle_left + chart_info -> gx_line_chart_left_margin); 97 chart_bound.gx_rectangle_top = (GX_VALUE)(chart_bound.gx_rectangle_top + chart_info -> gx_line_chart_top_margin); 98 chart_bound.gx_rectangle_right = (GX_VALUE)(chart_bound.gx_rectangle_right - chart_info -> gx_line_chart_right_margin); 99 chart_bound.gx_rectangle_bottom = (GX_VALUE)(chart_bound.gx_rectangle_bottom - chart_info -> gx_line_chart_bottom_margin); 100 101 x_step = chart_bound.gx_rectangle_right - chart_bound.gx_rectangle_left - chart_info -> gx_line_chart_axis_line_width; 102 x_step = GX_FIXED_VAL_MAKE(x_step); 103 104 if (chart_info -> gx_line_chart_max_data_count > 0) 105 { 106 x_step /= chart_info -> gx_line_chart_max_data_count; 107 } 108 last_x_pos = GX_FIXED_VAL_MAKE(chart_bound.gx_rectangle_left + chart_info -> gx_line_chart_axis_line_width + 1); 109 110 _gx_line_chart_y_scale_calculate(chart, &y_scale); 111 112 last_y_pos = chart_info -> gx_line_chart_data[0] - chart_info -> gx_line_chart_min_val; 113 last_y_pos *= y_scale; 114 last_y_pos = (INT)(chart_bound.gx_rectangle_bottom) - GX_FIXED_VAL_TO_INT(last_y_pos); 115 116 _gx_context_brush_width_set((UINT)(chart_info -> gx_line_chart_data_line_width)); 117 _gx_context_brush_define(chart_info -> gx_line_chart_line_color, chart_info -> gx_line_chart_line_color, GX_BRUSH_ALIAS | GX_BRUSH_ROUND); 118 119 for (index = 1; index < chart_info -> gx_line_chart_active_data_count; index++) 120 { 121 y_pos = chart_info -> gx_line_chart_data[index] - chart_info -> gx_line_chart_min_val; 122 y_pos *= y_scale; 123 y_pos = chart_bound.gx_rectangle_bottom - GX_FIXED_VAL_TO_INT(y_pos); 124 125 x_pos = last_x_pos + x_step; 126 _gx_canvas_line_draw((GX_VALUE)(GX_FIXED_VAL_TO_INT(last_x_pos)), (GX_VALUE)last_y_pos, 127 (GX_VALUE)(GX_FIXED_VAL_TO_INT(x_pos)), (GX_VALUE)y_pos); 128 last_x_pos = x_pos; 129 last_y_pos = y_pos; 130 } 131 } 132 133
