1 /**************************************************************************/
2 /* */
3 /* Copyright (c) Microsoft Corporation. All rights reserved. */
4 /* */
5 /* This software is licensed under the Microsoft Software License */
6 /* Terms for Microsoft Azure RTOS. Full text of the license can be */
7 /* found in the LICENSE file at https://aka.ms/AzureRTOS_EULA */
8 /* and in the root directory of this software. */
9 /* */
10 /**************************************************************************/
11
12
13 /**************************************************************************/
14 /**************************************************************************/
15 /** */
16 /** GUIX Component */
17 /** */
18 /** Tree View Management (Tree View) */
19 /** */
20 /**************************************************************************/
21
22 #define GX_SOURCE_CODE
23
24
25 /* Include necessary system files. */
26
27 #include "gx_api.h"
28 #include "gx_widget.h"
29 #include "gx_tree_view.h"
30 #include "gx_system.h"
31 #include "gx_window.h"
32 #include "gx_scrollbar.h"
33
34 /**************************************************************************/
35 /* */
36 /* FUNCTION RELEASE */
37 /* */
38 /* _gx_tree_view_scroll PORTABLE C */
39 /* 6.1 */
40 /* AUTHOR */
41 /* */
42 /* Kenneth Maxwell, Microsoft Corporation */
43 /* */
44 /* DESCRIPTION */
45 /* */
46 /* This service scrolls the tree client area by the specified amount. */
47 /* */
48 /* */
49 /* INPUT */
50 /* */
51 /* tree Pointer to tree view */
52 /* x_scroll Amount to scroll on x-axis */
53 /* y_scroll Amount to scroll on y-axis */
54 /* */
55 /* OUTPUT */
56 /* */
57 /* status Completion status */
58 /* */
59 /* CALLS */
60 /* */
61 /* _gx_widget_scroll_shift Change position of a widget */
62 /* _gx_widget_block_move Move a block of widget area */
63 /* _gx_window_scrollbar_find Find scrollbar for a widget */
64 /* _gx_scrollbar_reset Reset scrollbar information */
65 /* _gx_system_dirty_partial_add Mark partial area of a widget */
66 /* as dirty */
67 /* */
68 /* CALLED BY */
69 /* */
70 /* GUIX Internal Code */
71 /* */
72 /* RELEASE HISTORY */
73 /* */
74 /* DATE NAME DESCRIPTION */
75 /* */
76 /* 05-19-2020 Kenneth Maxwell Initial Version 6.0 */
77 /* 09-30-2020 Kenneth Maxwell Modified comment(s), */
78 /* resulting in version 6.1 */
79 /* */
80 /**************************************************************************/
_gx_tree_view_scroll(GX_TREE_VIEW * tree,GX_VALUE x_scroll,GX_VALUE y_scroll)81 UINT _gx_tree_view_scroll(GX_TREE_VIEW *tree, GX_VALUE x_scroll, GX_VALUE y_scroll)
82 {
83 GX_RECTANGLE block;
84 GX_WIDGET *child;
85 GX_SCROLLBAR *scroll;
86
87 block = tree -> gx_window_client;
88
89 if (!(tree -> gx_widget_style & GX_STYLE_TRANSPARENT) &&
90 (tree -> gx_widget_style & GX_STYLE_BORDER_THIN))
91 {
92 /* Widget with think border have a round corner, which have some effects to block move. */
93 block.gx_rectangle_right = (GX_VALUE)(block.gx_rectangle_left + 1);
94 _gx_system_dirty_partial_add((GX_WIDGET *)tree, &block);
95
96 block = tree -> gx_window_client;
97 block.gx_rectangle_bottom = (GX_VALUE)(block.gx_rectangle_top + 1);
98 _gx_system_dirty_partial_add((GX_WIDGET *)tree, &block);
99
100 block = tree -> gx_window_client;
101 block.gx_rectangle_left = (GX_VALUE)(block.gx_rectangle_left + 2);
102 block.gx_rectangle_top = (GX_VALUE)(block.gx_rectangle_top + 2);
103 }
104
105 /* Calculate shift values. */
106 tree -> gx_tree_view_x_shift = (GX_VALUE)(tree -> gx_tree_view_x_shift + x_scroll);
107 tree -> gx_tree_view_y_shift = (GX_VALUE)(tree -> gx_tree_view_y_shift + y_scroll);
108
109 child = tree -> gx_widget_first_child;
110 while (child)
111 {
112 if (!(child -> gx_widget_status & GX_STATUS_NONCLIENT))
113 {
114 _gx_widget_scroll_shift(child, x_scroll, y_scroll, GX_TRUE);
115 }
116 child = child -> gx_widget_next;
117 }
118
119 _gx_widget_block_move((GX_WIDGET *)tree, &block, x_scroll, y_scroll);
120
121 /* if we have a scrollbar, we need to tell it to re-calculate the thumb position */
122
123 scroll = GX_NULL;
124
125 if (x_scroll)
126 {
127 _gx_window_scrollbar_find((GX_WINDOW *)tree, (USHORT)GX_TYPE_HORIZONTAL_SCROLL, &scroll);
128 }
129 else
130 {
131 _gx_window_scrollbar_find((GX_WINDOW *)tree, GX_TYPE_VERTICAL_SCROLL, &scroll);
132 }
133
134 if (scroll)
135 {
136 _gx_scrollbar_reset(scroll, GX_NULL);
137 }
138 return(GX_SUCCESS);
139 }
140
141
