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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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/** Widget Management (Widget) */ |
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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_widget.h" |
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#include "gx_canvas.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_widget_block_move 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 move a rectangular block of pixels. */ |
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/* */ |
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/* INPUT */ |
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/* */ |
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/* widget Pointer to widget */ |
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/* block Rectangle to move */ |
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/* x_shift Number of pixels to shift on */ |
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/* the x-axis */ |
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/* y_shift Number of pixels to shift on */ |
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/* the y-axis */ |
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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_system_dirty_partial_add Add area to the dirty list */ |
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/* _gx_widget_canvas_get Find canvas associated with */ |
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/* the specified widget */ |
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/* _gx_canvas_drawing_initiate Start canvas draw */ |
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/* _gx_canvas_block_move Canvas-level block move call */ |
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/* _gx_canvas_drawing_complete Finish canvas draw */ |
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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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/**************************************************************************/ |
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UINT _gx_widget_block_move(GX_WIDGET *widget, GX_RECTANGLE *block, INT x_shift, INT y_shift) |
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{ |
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GX_CANVAS *canvas; |
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UINT status; |
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GX_RECTANGLE dirty; |
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GX_VALUE width; |
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GX_VALUE height; |
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✓✓ |
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if (widget -> gx_widget_status & GX_STATUS_TRANSPARENT) |
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{ |
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/* cannot do block move if transparent widget */ |
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_gx_system_dirty_partial_add(widget, block); |
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return GX_SUCCESS; |
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} |
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_gx_widget_canvas_get(widget, &canvas); |
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✓✓ |
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if (!canvas) |
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{ |
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return GX_INVALID_CANVAS; |
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} |
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GX_ENTER_CRITICAL |
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_gx_widget_width_get(widget, &width); |
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_gx_widget_height_get(widget, &height); |
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✓✓✓✓
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if ((GX_ABS(x_shift) >= width) || (GX_ABS(y_shift) >= height)) |
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{ |
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/* Shift is too large, just invalidate the widget. */ |
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_gx_system_dirty_partial_add(widget, block); |
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} |
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else |
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{ |
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_gx_canvas_drawing_initiate(canvas, widget, block); |
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status = _gx_canvas_block_move(block, (GX_VALUE)x_shift, (GX_VALUE)y_shift, &dirty); |
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✓✓ |
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if (status == GX_SUCCESS) |
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{ |
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/* re-draw the portion that could not be moved */ |
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_gx_canvas_drawing_initiate(canvas, widget, &dirty); |
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widget->gx_widget_draw_function(widget); |
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_gx_canvas_drawing_complete(canvas, GX_FALSE); |
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_gx_canvas_drawing_complete(canvas, GX_TRUE); |
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} |
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else |
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{ |
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/* block move was not successful, just invalidate the widget client */ |
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_gx_system_dirty_partial_add(widget, block); |
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_gx_canvas_drawing_complete(canvas, GX_FALSE); |
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} |
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} |
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GX_EXIT_CRITICAL |
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return(GX_SUCCESS); |
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} |
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