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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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/** Canvas Management (Canvas) */ |
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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_utility.h" |
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#include "gx_canvas.h" |
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/**************************************************************************/ |
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/* */ |
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/* FUNCTION RELEASE */ |
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/* */ |
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/* _gx_canvas_hide PORTABLE C */ |
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/* 6.1.3 */ |
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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 makes a canvas invisible */ |
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/* */ |
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/* INPUT */ |
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/* */ |
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/* canvas Canvas control block */ |
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/* */ |
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/* OUTPUT */ |
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/* */ |
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/* status Completion status */ |
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/* */ |
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/* CALLS */ |
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/* */ |
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/* _gx_canvas_dirty_mark Set the canvas dirty flag */ |
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/* */ |
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/* CALLED BY */ |
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/* */ |
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/* Application */ |
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/* */ |
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/**************************************************************************/ |
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UINT _gx_canvas_hide(GX_CANVAS *canvas) |
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{ |
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VOID (*hide_function)(INT layer); |
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GX_CANVAS *head = _gx_system_canvas_created_list; |
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GX_RECTANGLE dirty; |
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GX_RECTANGLE combine; |
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/* change canvas status flag. */ |
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canvas -> gx_canvas_status &= ~(UINT)(GX_CANVAS_VISIBLE); |
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✓✓ |
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if (canvas -> gx_canvas_hardware_layer >= 0) |
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{ |
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hide_function = canvas -> gx_canvas_display -> gx_display_layer_services -> gx_display_layer_hide; |
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✓✓ |
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if (hide_function) |
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{ |
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hide_function(canvas -> gx_canvas_hardware_layer); |
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return(GX_SUCCESS); |
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} |
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} |
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/* mark the canvas dirty so that it get refreshed */ |
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_gx_utility_rectangle_define(&dirty, 0, 0, (GX_VALUE)(canvas -> gx_canvas_x_resolution - 1), (GX_VALUE)(canvas -> gx_canvas_y_resolution - 1)); |
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✓✓✓✓
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if (canvas -> gx_canvas_display_offset_x || canvas -> gx_canvas_display_offset_y) |
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{ |
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_gx_utility_rectangle_shift(&dirty, canvas -> gx_canvas_display_offset_x, canvas -> gx_canvas_display_offset_y); |
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} |
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✓✓ |
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while (head) |
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{ |
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✓✓ |
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if (head -> gx_canvas_status & GX_CANVAS_VISIBLE) |
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{ |
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_gx_utility_rectangle_define(&combine, 0, 0, (GX_VALUE)(head -> gx_canvas_x_resolution - 1), (GX_VALUE)(head -> gx_canvas_y_resolution - 1)); |
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✓✓✓✓
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if (head -> gx_canvas_display_offset_x || head -> gx_canvas_display_offset_y) |
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{ |
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_gx_utility_rectangle_shift(&combine, head -> gx_canvas_display_offset_x, head -> gx_canvas_display_offset_y); |
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} |
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_gx_utility_rectangle_combine(&combine, &dirty); |
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_gx_canvas_dirty_mark(head, &combine); |
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} |
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head = head -> gx_canvas_created_next; |
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} |
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/* Return successful status. */ |
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return(GX_SUCCESS); |
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} |
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