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/*************************************************************************** |
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* Copyright (c) 2024 Microsoft Corporation |
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* |
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* This program and the accompanying materials are made available under the |
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* terms of the MIT License which is available at |
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* https://opensource.org/licenses/MIT. |
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* |
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* SPDX-License-Identifier: MIT |
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**************************************************************************/ |
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/**************************************************************************/ |
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/**************************************************************************/ |
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/** */ |
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/** GUIX Component */ |
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/** */ |
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/** Display Management (Display) */ |
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/** */ |
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/**************************************************************************/ |
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#define GX_SOURCE_CODE |
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/* Include necessary system files. */ |
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#include "gx_api.h" |
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#include "gx_display.h" |
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#include "gx_canvas.h" |
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#include "gx_context.h" |
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/**************************************************************************/ |
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/* */ |
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/* FUNCTION RELEASE */ |
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/* */ |
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/* _gx_display_driver_generic_polygon_draw PORTABLE C */ |
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/* 6.1 */ |
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/* AUTHOR */ |
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/* */ |
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/* Kenneth Maxwell, Microsoft Corporation */ |
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/* */ |
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/* DESCRIPTION */ |
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/* */ |
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/* Generic polygon draw function. */ |
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/* */ |
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/* INPUT */ |
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/* */ |
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/* context Drawing context */ |
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/* vertex Array of vertexes */ |
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/* num Number of vertexes */ |
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/* */ |
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/* OUTPUT */ |
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/* */ |
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/* None */ |
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/* */ |
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/* CALLS */ |
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/* */ |
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/* _gx_canvas_line_draw Draw a line into canvas */ |
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/* */ |
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/* CALLED BY */ |
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/* */ |
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/* GUIX Internal Code */ |
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/* */ |
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/* RELEASE HISTORY */ |
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/* */ |
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/* DATE NAME DESCRIPTION */ |
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/* */ |
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/* 05-19-2020 Kenneth Maxwell Initial Version 6.0 */ |
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/* 09-30-2020 Kenneth Maxwell Modified comment(s), */ |
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/* resulting in version 6.1 */ |
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/* */ |
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/**************************************************************************/ |
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VOID _gx_display_driver_generic_polygon_draw(GX_DRAW_CONTEXT *context, GX_POINT *vertex, INT num) |
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{ |
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INT index; |
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INT brush_width = context -> gx_draw_context_brush.gx_brush_width; |
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#if defined (GX_BRUSH_ALPHA_SUPPORT) |
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GX_UBYTE temp_alpha; |
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UINT brush_style; |
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temp_alpha = context -> gx_draw_context_brush.gx_brush_alpha; |
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brush_style = context -> gx_draw_context_brush.gx_brush_style; |
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✓✓ |
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if (brush_width > 1) |
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{ |
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✓✓ |
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if (temp_alpha != 0xff) |
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{ |
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✓✓✓✓
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if ((brush_style & GX_BRUSH_ROUND) || (brush_style & GX_BRUSH_ALIAS)) |
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{ |
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context -> gx_draw_context_brush.gx_brush_alpha = GX_ALPHA_VALUE_OPAQUE; |
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} |
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} |
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} |
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#endif |
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✓✓ |
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if (brush_width > 0) |
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{ |
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/*round end*/ |
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✓✓ |
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for (index = 0; index < num; index++) |
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{ |
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_gx_canvas_line_draw(vertex[index].gx_point_x, vertex[index].gx_point_y, |
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vertex[(index + 1) % num].gx_point_x, vertex[(index + 1) % num].gx_point_y); |
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} |
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} |
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#if defined (GX_BRUSH_ALPHA_SUPPORT) |
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context -> gx_draw_context_brush.gx_brush_alpha = temp_alpha; |
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#endif |
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} |
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