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/*************************************************************************** |
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* Copyright (c) 2024 Microsoft Corporation |
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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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/** Scroll Management (Scroll) */ |
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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_canvas.h" |
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#include "gx_context.h" |
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#include "gx_widget.h" |
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#include "gx_icon.h" |
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#include "gx_scrollbar.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_scrollbar_draw PORTABLE C */ |
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/* 6.3.0 */ |
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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 draws the specified scroll bar, which is a */ |
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/* special type of widget. */ |
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/* */ |
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/* INPUT */ |
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/* */ |
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/* scrollbar Scrollbar widget to draw */ |
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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_context_brush_define Define the brush for the */ |
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/* context */ |
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/* _gx_context_brush_width_set Set the width of the brush */ |
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/* _gx_canvas_rectangle_draw Draw rectangle */ |
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/* _gx_context_pixelmap_get Retrieve pixelmap image */ |
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/* _gx_canvas_pixelmap_tile Tile the canvas area with */ |
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/* pixelmap */ |
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/* _gx_canvas_pixelmap_draw Draw pixelmap */ |
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/* _gx_widget_width_get Retrieve the width of the */ |
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/* widget */ |
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/* _gx_widget_height_get Retrieve the height of the */ |
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/* widget */ |
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/* _gx_widget_children_draw Draw children widgets */ |
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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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/* RELEASE HISTORY */ |
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/* */ |
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/* DATE NAME DESCRIPTION */ |
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/* */ |
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/* 05-19-2020 Kenneth Maxwell Initial Version 6.0 */ |
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/* 09-30-2020 Kenneth Maxwell Modified comment(s), */ |
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/* resulting in version 6.1 */ |
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/* 10-31-2023 Ting Zhu Modified comment(s), */ |
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/* improved logic, */ |
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/* resulting in version 6.3.0 */ |
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/* */ |
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/**************************************************************************/ |
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VOID _gx_scrollbar_draw(GX_SCROLLBAR *scrollbar) |
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{ |
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GX_PIXELMAP *map; |
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GX_VALUE xpos; |
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GX_VALUE ypos; |
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GX_VALUE widget_width; |
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GX_VALUE widget_height; |
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GX_RECTANGLE size; |
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GX_RECTANGLE old_dirty; |
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GX_COLOR fill_color; |
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✓✓ |
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if (scrollbar -> gx_widget_style & GX_STYLE_ENABLED) |
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{ |
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✓✓ |
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if (scrollbar -> gx_widget_style & GX_STYLE_DRAW_SELECTED) |
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{ |
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fill_color = scrollbar -> gx_widget_selected_fill_color; |
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} |
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else |
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{ |
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fill_color = scrollbar -> gx_widget_normal_fill_color; |
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} |
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} |
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else |
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{ |
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fill_color = scrollbar -> gx_widget_disabled_fill_color; |
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} |
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✓✓ |
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if ((scrollbar -> gx_widget_style & GX_STYLE_TRANSPARENT) == 0) |
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{ |
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size = scrollbar -> gx_widget_size; |
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/* Draw background. */ |
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✓✓ |
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if (scrollbar -> gx_widget_style & GX_STYLE_BORDER_THIN) |
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{ |
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_gx_context_brush_define(GX_COLOR_ID_SHADOW, |
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fill_color, |
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GX_BRUSH_SOLID_FILL); |
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_gx_context_brush_width_set(1); |
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} |
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else |
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{ |
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_gx_context_brush_define(fill_color, |
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fill_color, |
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GX_BRUSH_SOLID_FILL); |
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_gx_context_brush_width_set(0); |
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_gx_canvas_rectangle_draw(&size); |
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} |
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_gx_canvas_rectangle_draw(&size); |
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/* Draw pixelmaps. */ |
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_gx_context_pixelmap_get(scrollbar -> gx_scrollbar_appearance.gx_scroll_up_pixelmap, &map); |
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✓✓ |
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if (map) |
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{ |
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✓✓ |
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if (scrollbar -> gx_widget_type == GX_TYPE_VERTICAL_SCROLL) |
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{ |
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/* Draw up pixelmap. */ |
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xpos = size.gx_rectangle_left; |
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_gx_widget_width_get((GX_WIDGET *)scrollbar, &widget_width); |
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xpos = (GX_VALUE)(xpos + (widget_width - map -> gx_pixelmap_width) / 2); |
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ypos = size.gx_rectangle_top; |
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size.gx_rectangle_top = (GX_VALUE)(size.gx_rectangle_top + map -> gx_pixelmap_height); |
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} |
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else |
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{ |
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/* Draw left pixelmap. */ |
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xpos = size.gx_rectangle_left; |
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ypos = size.gx_rectangle_top; |
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_gx_widget_height_get((GX_WIDGET *)scrollbar, &widget_height); |
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ypos = (GX_VALUE)(ypos + (widget_height - map -> gx_pixelmap_height) / 2); |
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size.gx_rectangle_left = (GX_VALUE)(size.gx_rectangle_left + map -> gx_pixelmap_width); |
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} |
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_gx_canvas_pixelmap_draw(xpos, ypos, map); |
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} |
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_gx_context_pixelmap_get(scrollbar -> gx_scrollbar_appearance.gx_scroll_down_pixelmap, &map); |
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✓✓ |
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if (map) |
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{ |
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✓✓ |
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if (scrollbar -> gx_widget_type == GX_TYPE_VERTICAL_SCROLL) |
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{ |
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/* Draw down pixelmap. */ |
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size.gx_rectangle_bottom = (GX_VALUE)(size.gx_rectangle_bottom - map -> gx_pixelmap_height); |
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xpos = size.gx_rectangle_left; |
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_gx_widget_width_get((GX_WIDGET *)scrollbar, &widget_width); |
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xpos = (GX_VALUE)(xpos + (widget_width - map -> gx_pixelmap_width) / 2); |
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ypos = size.gx_rectangle_bottom; |
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} |
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else |
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{ |
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/* Draw right pixelmap. */ |
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size.gx_rectangle_right = (GX_VALUE)(size.gx_rectangle_right - map -> gx_pixelmap_width); |
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xpos = size.gx_rectangle_right; |
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ypos = size.gx_rectangle_top; |
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_gx_widget_height_get((GX_WIDGET *)scrollbar, &widget_height); |
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ypos = (GX_VALUE)(ypos + (widget_height - map -> gx_pixelmap_height) / 2); |
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} |
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_gx_canvas_pixelmap_draw(xpos, ypos, map); |
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} |
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_gx_context_pixelmap_get(scrollbar -> gx_scrollbar_appearance.gx_scroll_fill_pixelmap, &map); |
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✓✓ |
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if (map) |
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{ |
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/* Draw background pixelmap. */ |
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✓✓ |
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if (scrollbar -> gx_widget_style & GX_STYLE_TILE_BACKGROUND) |
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{ |
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_gx_canvas_pixelmap_tile(&size, map); |
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} |
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else |
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{ |
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xpos = size.gx_rectangle_left; |
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_gx_widget_width_get((GX_WIDGET *)scrollbar, &widget_width); |
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xpos = (GX_VALUE)(xpos + (widget_width - map -> gx_pixelmap_width) / 2); |
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ypos = size.gx_rectangle_top; |
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_gx_widget_height_get((GX_WIDGET *)scrollbar, &widget_height); |
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ypos = (GX_VALUE)(ypos + (widget_height - map -> gx_pixelmap_height) / 2); |
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/* Reset dirty area temporarily to avoid cover the end pixelmap area. */ |
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old_dirty = _gx_system_current_draw_context -> gx_draw_context_dirty; |
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✓✗ |
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if(_gx_utility_rectangle_overlap_detect(&old_dirty, &size, &size) == GX_TRUE) |
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{ |
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_gx_system_current_draw_context -> gx_draw_context_dirty = size; |
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_gx_canvas_pixelmap_draw(xpos, ypos, map); |
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/* Set dirty area back. */ |
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_gx_system_current_draw_context -> gx_draw_context_dirty = old_dirty; |
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} |
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} |
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} |
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} |
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/* Draw children widgets of prompt widget. */ |
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_gx_widget_children_draw((GX_WIDGET *)scrollbar); |
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} |
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