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/*************************************************************************** |
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* Copyright (c) 2024 Microsoft Corporation |
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* Copyright (c) 2026-present Eclipse ThreadX contributors |
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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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/** Scrollbar Management (Scrollbar) */ |
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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_display.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_scrollbar.h" |
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/**************************************************************************/ |
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/* */ |
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/* FUNCTION RELEASE */ |
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/* */ |
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/* _gx_scrollbar_size_update 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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/* Calculate and return the position of a GX_SCROLLBAR thumb button */ |
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/* based scrollbar dimensions, current value, and visible range. */ |
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/* */ |
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/* */ |
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/* INPUT */ |
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/* */ |
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/* scroll Scroll 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_widget_border_width_get Obtain widget border width */ |
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/* _gx_widget_resize Resize a widget */ |
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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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/**************************************************************************/ |
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VOID _gx_scrollbar_size_update(GX_SCROLLBAR *scroll) |
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{ |
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GX_WINDOW *parent; |
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GX_RECTANGLE size; |
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GX_VALUE border_width; |
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UINT style = scroll -> gx_widget_style; |
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parent = (GX_WINDOW *)scroll -> gx_widget_parent; |
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✓✓ |
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if (parent) |
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{ |
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_gx_widget_border_width_get((GX_WIDGET *) parent, &border_width); |
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✓✓ |
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if (style & GX_SCROLLBAR_VERTICAL) |
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{ |
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size.gx_rectangle_top = parent -> gx_window_client.gx_rectangle_top; |
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size.gx_rectangle_bottom = parent -> gx_window_client.gx_rectangle_bottom; |
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size.gx_rectangle_right = (GX_VALUE)(parent -> gx_widget_size.gx_rectangle_right - border_width); |
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size.gx_rectangle_left = (GX_VALUE)(size.gx_rectangle_right - scroll -> gx_scrollbar_appearance.gx_scroll_width + 1); |
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} |
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else |
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{ |
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size.gx_rectangle_left = parent -> gx_window_client.gx_rectangle_left; |
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size.gx_rectangle_right = parent -> gx_window_client.gx_rectangle_right; |
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size.gx_rectangle_bottom = (GX_VALUE)(parent -> gx_widget_size.gx_rectangle_bottom - border_width); |
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size.gx_rectangle_top = (GX_VALUE)(size.gx_rectangle_bottom - scroll -> gx_scrollbar_appearance.gx_scroll_width + 1); |
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} |
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_gx_widget_resize((GX_WIDGET *)scroll, &size); |
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✓✓ |
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if (style & GX_SCROLLBAR_END_BUTTONS) |
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{ |
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✓✓ |
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if (style & GX_SCROLLBAR_VERTICAL) |
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{ |
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/* calculate size for up button */ |
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size.gx_rectangle_top = (GX_VALUE)(scroll -> gx_widget_size.gx_rectangle_top + 1); |
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size.gx_rectangle_right = (GX_VALUE)(scroll -> gx_widget_size.gx_rectangle_right - 1); |
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size.gx_rectangle_left = (GX_VALUE)(scroll->gx_widget_size.gx_rectangle_left + 1); |
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size.gx_rectangle_bottom = (GX_VALUE)(size.gx_rectangle_top + scroll -> gx_scrollbar_appearance.gx_scroll_width - 1); |
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_gx_widget_resize((GX_WIDGET *)&scroll -> gx_scrollbar_upleft, &size); |
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/* calculate size for down button */ |
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size.gx_rectangle_bottom = (GX_VALUE)(scroll -> gx_widget_size.gx_rectangle_bottom - 1); |
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size.gx_rectangle_top = (GX_VALUE)(size.gx_rectangle_bottom - scroll -> gx_scrollbar_appearance.gx_scroll_width + 1); |
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_gx_widget_resize((GX_WIDGET *)&scroll -> gx_scrollbar_downright, &size); |
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} |
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else |
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{ |
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/* calculate size for left button */ |
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size.gx_rectangle_left = (GX_VALUE)(scroll -> gx_widget_size.gx_rectangle_left + 1); |
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size.gx_rectangle_bottom = (GX_VALUE)(scroll -> gx_widget_size.gx_rectangle_bottom - 1); |
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size.gx_rectangle_top = (GX_VALUE)(scroll->gx_widget_size.gx_rectangle_top + 1); |
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size.gx_rectangle_right = (GX_VALUE)(size.gx_rectangle_left + scroll -> gx_scrollbar_appearance.gx_scroll_width - 1); |
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_gx_widget_resize((GX_WIDGET *)&scroll -> gx_scrollbar_upleft, &size); |
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/* calculate size for right button */ |
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size.gx_rectangle_right = (GX_VALUE)(scroll -> gx_widget_size.gx_rectangle_right - 1); |
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size.gx_rectangle_left = (GX_VALUE)(size.gx_rectangle_right - scroll -> gx_scrollbar_appearance.gx_scroll_width); |
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_gx_widget_resize((GX_WIDGET *)&scroll -> gx_scrollbar_downright, &size); |
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} |
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} |
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} |
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} |
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