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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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/** Multi Line Text View Management (Multi Line Text View) */ |
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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_window.h" |
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#include "gx_multi_line_text_view.h" |
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#include "gx_widget.h" |
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/**************************************************************************/ |
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/* */ |
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/* FUNCTION RELEASE */ |
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/* */ |
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/* _gx_multi_line_text_view_visible_rows_compute 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 function computes the number of visible rows. */ |
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/* */ |
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/* INPUT */ |
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/* */ |
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/* view Multi line text view */ |
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/* 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_font_get Retrieve font */ |
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/* _gx_window_client_height_get Get the height of client */ |
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/* */ |
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/* CALLED BY */ |
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/* */ |
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/* _gx_multi_line_text_view_event_process */ |
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/* */ |
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/**************************************************************************/ |
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UINT _gx_multi_line_text_view_visible_rows_compute(GX_MULTI_LINE_TEXT_VIEW *view) |
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{ |
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GX_FONT *font; |
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GX_VALUE widget_height; |
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INT line_height; |
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_gx_widget_font_get((GX_WIDGET *)view, view -> gx_multi_line_text_view_font_id, &font); |
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✓✓ |
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if (!font) |
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{ |
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return GX_FAILURE; |
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} |
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/* Pickup text height. */ |
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line_height = font -> gx_font_line_height + view -> gx_multi_line_text_view_line_space; |
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/* Pickup widget height. */ |
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_gx_window_client_height_get((GX_WINDOW *)view, &widget_height); |
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✓✓ |
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if (line_height) |
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{ |
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widget_height = (GX_VALUE)(widget_height - (view -> gx_multi_line_text_view_whitespace << 1)); |
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/* Compute the total rows number of the widget. */ |
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view -> gx_multi_line_text_view_text_visible_rows = (UINT)((widget_height + line_height - 1) / line_height); |
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} |
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return GX_SUCCESS; |
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} |
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