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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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/** Rich Text View Management (Rich 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_widget.h" |
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#include "gx_system.h" |
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#include "gx_window.h" |
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#include "gx_rich_text_view.h" |
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#include "gx_utility.h" |
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/**************************************************************************/ |
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/* */ |
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/* FUNCTION RELEASE */ |
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/* */ |
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/* _gx_rich_text_view_text_total_height_calculate 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 calculates rich text view text total height. */ |
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/* */ |
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/* INPUT */ |
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/* */ |
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/* text_view Multi line text view */ |
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/* control block */ |
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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_utility_rectangle_resize Resize rectangle */ |
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/* _gx_widget_string_get_ext Detect and process rich text */ |
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/* tag */ |
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/* _gx_widget_font_get Retrieve font by id */ |
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/* _gx_utility_utf8_string_character_get Retrieve glyph length */ |
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/* _gx_system_string_width_get Get string width */ |
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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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UINT _gx_rich_text_view_text_total_height_calculate(GX_RICH_TEXT_VIEW *text_view) |
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{ |
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GX_STRING text; |
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GX_FONT *font; |
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GX_RICH_TEXT_LINE_INFO line_info; |
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GX_RICH_TEXT_FORMAT format; |
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GX_VALUE client_width; |
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GX_RECTANGLE client; |
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INT total_height = 0; |
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✓✓ |
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if (!text_view -> gx_multi_line_text_view_text.gx_string_length) |
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{ |
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text_view -> gx_rich_text_view_text_total_height = 0; |
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text_view -> gx_multi_line_text_view_line_index_old = GX_FALSE; |
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return GX_SUCCESS; |
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} |
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/* Pick up client retangle. */ |
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client = text_view -> gx_window_client; |
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/* Offset client area by the size of whitespace. */ |
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_gx_utility_rectangle_resize(&client, (GX_VALUE)(-text_view -> gx_multi_line_text_view_whitespace)); |
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/* Calculate text display width. */ |
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client_width = (GX_VALUE)(client.gx_rectangle_right - client.gx_rectangle_left - 1); |
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/* Set default draw style. */ |
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format.gx_rich_text_font_id = text_view -> gx_rich_text_view_fonts.gx_rich_text_fonts_normal_id; |
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format.gx_rich_text_flags = 0; |
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/* Pick up text for drawing. */ |
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✓✓ |
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if (text_view -> gx_multi_line_text_view_text_id) |
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{ |
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_gx_widget_string_get_ext((GX_WIDGET *)text_view, text_view -> gx_multi_line_text_view_text_id, &text); |
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} |
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else |
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{ |
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_gx_system_private_string_get(&text_view -> gx_multi_line_text_view_text, &text, text_view -> gx_widget_style); |
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} |
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/* Calculate the total rows of text view string. */ |
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✓✓ |
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while (text.gx_string_length > 0) |
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{ |
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/* Pickup draw font. */ |
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_gx_widget_font_get((GX_WIDGET *)text_view, format.gx_rich_text_font_id, &font); |
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✓✓ |
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if (!font) |
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{ |
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return GX_INVALID_FONT; |
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} |
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line_info.gx_rich_text_line_info_text.gx_string_ptr = text.gx_string_ptr; |
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line_info.gx_rich_text_line_info_text.gx_string_length = 0; |
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line_info.gx_rich_text_line_info_start_format = format; |
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line_info.gx_rich_text_line_info_end_format = format; |
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line_info.gx_rich_text_line_info_line_height = font -> gx_font_line_height; |
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line_info.gx_rich_text_line_info_text_width = 0; |
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_gx_rich_text_view_line_info_get(text_view, text, &line_info, client_width); |
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total_height += line_info.gx_rich_text_line_info_line_height; |
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total_height += text_view -> gx_multi_line_text_view_line_space; |
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format = line_info.gx_rich_text_line_info_end_format; |
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text.gx_string_ptr += line_info.gx_rich_text_line_info_text.gx_string_length; |
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text.gx_string_length -= line_info.gx_rich_text_line_info_text.gx_string_length; |
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} |
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_gx_rich_text_view_context_reset(); |
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text_view -> gx_rich_text_view_text_total_height = (UINT)total_height; |
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text_view -> gx_multi_line_text_view_line_index_old = GX_FALSE; |
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return GX_SUCCESS; |
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} |
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