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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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/** Slider Management (Slider) */ |
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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_system.h" |
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#include "gx_canvas.h" |
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#include "gx_context.h" |
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#include "gx_widget.h" |
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#include "gx_utility.h" |
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#include "gx_slider.h" |
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/**************************************************************************/ |
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/* */ |
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/* FUNCTION RELEASE */ |
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/* */ |
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/* _gx_slider_needle_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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/* This service draws a slider needle. */ |
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/* */ |
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/* INPUT */ |
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/* */ |
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/* slider Slider widget control block */ |
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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_slider_needle_position_get Get the position of the */ |
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/* slider needle */ |
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/* _gx_context_line_color_set Set the line color for the */ |
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/* context */ |
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/* _gx_context_brush_width_set Set the brush width of the */ |
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/* context */ |
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/* _gx_canvas_line_draw Draw a line on the canvas */ |
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/* _gx_context_brush_define Define the brush of the */ |
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/* context */ |
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/* _gx_canvas_rectangle_draw Draw a rectangle */ |
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/* */ |
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/* CALLED BY */ |
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/* */ |
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/* Application Code */ |
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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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125772 |
VOID _gx_slider_needle_draw(GX_SLIDER *slider) |
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{ |
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GX_VALUE NeedleSpace; |
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GX_VALUE center; |
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GX_RECTANGLE NeedleSize; |
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GX_SLIDER_INFO *info; |
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/* pick up the needle width */ |
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info = &slider -> gx_slider_info; |
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✓✓ |
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if (slider -> gx_widget_style & GX_STYLE_SLIDER_VERTICAL) |
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{ |
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NeedleSpace = info -> gx_slider_info_needle_height; |
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} |
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else |
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{ |
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NeedleSpace = info -> gx_slider_info_needle_width; |
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} |
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/* get needle dimensions based on current value */ |
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_gx_slider_needle_position_get(slider, info, &NeedleSize); |
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/* pick up brush pointer */ |
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_gx_context_line_color_set(GX_COLOR_ID_SLIDER_GROOVE_TOP); |
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_gx_context_brush_width_set(1); |
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/* draw the line on which the needle slides */ |
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✓✓ |
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if (slider -> gx_widget_style & GX_STYLE_SLIDER_VERTICAL) |
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{ |
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center = (GX_VALUE)(slider -> gx_widget_size.gx_rectangle_left + |
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slider -> gx_widget_size.gx_rectangle_right) / 2; |
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_gx_canvas_line_draw(center, |
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(GX_VALUE)(slider -> gx_widget_size.gx_rectangle_top + NeedleSpace), |
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center, |
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(GX_VALUE)(slider -> gx_widget_size.gx_rectangle_bottom - NeedleSpace)); |
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_gx_context_line_color_set(GX_COLOR_ID_SLIDER_GROOVE_BOTTOM); |
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_gx_canvas_line_draw((GX_VALUE)(center + 1), |
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(GX_VALUE)(slider -> gx_widget_size.gx_rectangle_top + NeedleSpace), |
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(GX_VALUE)(center + 1), |
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(GX_VALUE)(slider -> gx_widget_size.gx_rectangle_bottom - NeedleSpace)); |
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} |
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else |
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{ |
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center = (GX_VALUE)(slider -> gx_widget_size.gx_rectangle_top + |
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slider -> gx_widget_size.gx_rectangle_bottom) / 2; |
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_gx_canvas_line_draw((GX_VALUE)(slider -> gx_widget_size.gx_rectangle_left + NeedleSpace), |
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center, (GX_VALUE)(slider -> gx_widget_size.gx_rectangle_right - NeedleSpace), |
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center); |
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_gx_context_line_color_set(GX_COLOR_ID_SLIDER_GROOVE_BOTTOM); |
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_gx_canvas_line_draw((GX_VALUE)(slider -> gx_widget_size.gx_rectangle_left + NeedleSpace), |
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(GX_VALUE)(center + 1), (GX_VALUE)(slider -> gx_widget_size.gx_rectangle_right - NeedleSpace), |
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(GX_VALUE)(center + 1)); |
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} |
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/* draw the needle itself */ |
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_gx_context_brush_define(GX_COLOR_ID_SLIDER_NEEDLE_OUTLINE, |
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GX_COLOR_ID_SLIDER_NEEDLE_FILL, |
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GX_BRUSH_SOLID_FILL); |
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_gx_canvas_rectangle_draw(&NeedleSize); |
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_gx_context_line_color_set(GX_COLOR_ID_SLIDER_NEEDLE_LINE1); |
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✓✓ |
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if (slider -> gx_widget_style & GX_STYLE_SLIDER_VERTICAL) |
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{ |
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_gx_canvas_line_draw((GX_VALUE)(NeedleSize.gx_rectangle_left + 1), |
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(GX_VALUE)(NeedleSize.gx_rectangle_top + 2), |
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(GX_VALUE)(NeedleSize.gx_rectangle_right - 1), |
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(GX_VALUE)(NeedleSize.gx_rectangle_top + 2)); |
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_gx_context_line_color_set(GX_COLOR_ID_SLIDER_NEEDLE_LINE2); |
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_gx_canvas_line_draw((GX_VALUE)(NeedleSize.gx_rectangle_left + 1), |
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(GX_VALUE)(NeedleSize.gx_rectangle_top + 3), |
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(GX_VALUE)(NeedleSize.gx_rectangle_right - 1), |
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(GX_VALUE)(NeedleSize.gx_rectangle_top + 3)); |
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} |
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else |
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{ |
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_gx_canvas_line_draw((GX_VALUE)(NeedleSize.gx_rectangle_left + 2), |
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(GX_VALUE)(NeedleSize.gx_rectangle_top + 1), |
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(GX_VALUE)(NeedleSize.gx_rectangle_left + 2), |
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(GX_VALUE)(NeedleSize.gx_rectangle_bottom - 1)); |
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_gx_context_line_color_set(GX_COLOR_ID_SLIDER_NEEDLE_LINE2); |
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_gx_canvas_line_draw((GX_VALUE)(NeedleSize.gx_rectangle_left + 3), |
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(GX_VALUE)(NeedleSize.gx_rectangle_top + 1), |
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(GX_VALUE)(NeedleSize.gx_rectangle_left + 3), |
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(GX_VALUE)(NeedleSize.gx_rectangle_bottom - 1)); |
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} |
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} |
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