1 /***************************************************************************
2 * Copyright (c) 2024 Microsoft Corporation
3 *
4 * This program and the accompanying materials are made available under the
5 * terms of the MIT License which is available at
6 * https://opensource.org/licenses/MIT.
7 *
8 * SPDX-License-Identifier: MIT
9 **************************************************************************/
10
11
12 /**************************************************************************/
13 /**************************************************************************/
14 /** */
15 /** GUIX Component */
16 /** */
17 /** Widget Management (Widget) */
18 /** */
19 /**************************************************************************/
20
21 #define GX_SOURCE_CODE
22
23
24 /* Include necessary system files. */
25
26 #include "gx_api.h"
27 #include "gx_system.h"
28 #include "gx_widget.h"
29 #include "gx_canvas.h"
30 #include "gx_utility.h"
31
32 /**************************************************************************/
33 /* */
34 /* FUNCTION RELEASE */
35 /* */
36 /* _gx_widget_block_move PORTABLE C */
37 /* 6.1 */
38 /* AUTHOR */
39 /* */
40 /* Kenneth Maxwell, Microsoft Corporation */
41 /* */
42 /* DESCRIPTION */
43 /* */
44 /* This service move a rectangular block of pixels. */
45 /* */
46 /* INPUT */
47 /* */
48 /* widget Pointer to widget */
49 /* block Rectangle to move */
50 /* x_shift Number of pixels to shift on */
51 /* the x-axis */
52 /* y_shift Number of pixels to shift on */
53 /* the y-axis */
54 /* */
55 /* OUTPUT */
56 /* */
57 /* status Completion status */
58 /* */
59 /* CALLS */
60 /* */
61 /* _gx_system_dirty_partial_add Add area to the dirty list */
62 /* _gx_widget_canvas_get Find canvas associated with */
63 /* the specified widget */
64 /* _gx_canvas_drawing_initiate Start canvas draw */
65 /* _gx_canvas_block_move Canvas-level block move call */
66 /* _gx_canvas_drawing_complete Finish canvas draw */
67 /* */
68 /* CALLED BY */
69 /* */
70 /* Application Code */
71 /* GUIX Internal Code */
72 /* */
73 /* RELEASE HISTORY */
74 /* */
75 /* DATE NAME DESCRIPTION */
76 /* */
77 /* 05-19-2020 Kenneth Maxwell Initial Version 6.0 */
78 /* 09-30-2020 Kenneth Maxwell Modified comment(s), */
79 /* resulting in version 6.1 */
80 /* */
81 /**************************************************************************/
_gx_widget_block_move(GX_WIDGET * widget,GX_RECTANGLE * block,INT x_shift,INT y_shift)82 UINT _gx_widget_block_move(GX_WIDGET *widget, GX_RECTANGLE *block, INT x_shift, INT y_shift)
83 {
84 GX_CANVAS *canvas;
85 UINT status;
86 GX_RECTANGLE dirty;
87 GX_VALUE width;
88 GX_VALUE height;
89
90 if (widget -> gx_widget_status & GX_STATUS_TRANSPARENT)
91 {
92 /* cannot do block move if transparent widget */
93 _gx_system_dirty_partial_add(widget, block);
94 return GX_SUCCESS;
95 }
96
97 _gx_widget_canvas_get(widget, &canvas);
98
99 if (!canvas)
100 {
101 return GX_INVALID_CANVAS;
102 }
103
104 GX_ENTER_CRITICAL
105
106 _gx_widget_width_get(widget, &width);
107 _gx_widget_height_get(widget, &height);
108
109 if ((GX_ABS(x_shift) >= width) || (GX_ABS(y_shift) >= height))
110 {
111 /* Shift is too large, just invalidate the widget. */
112 _gx_system_dirty_partial_add(widget, block);
113 }
114 else
115 {
116 _gx_canvas_drawing_initiate(canvas, widget, block);
117 status = _gx_canvas_block_move(block, (GX_VALUE)x_shift, (GX_VALUE)y_shift, &dirty);
118
119 if (status == GX_SUCCESS)
120 {
121 /* re-draw the portion that could not be moved */
122 _gx_canvas_drawing_initiate(canvas, widget, &dirty);
123 widget->gx_widget_draw_function(widget);
124 _gx_canvas_drawing_complete(canvas, GX_FALSE);
125 _gx_canvas_drawing_complete(canvas, GX_TRUE);
126 }
127 else
128 {
129 /* block move was not successful, just invalidate the widget client */
130 _gx_system_dirty_partial_add(widget, block);
131 _gx_canvas_drawing_complete(canvas, GX_FALSE);
132 }
133 }
134
135 GX_EXIT_CRITICAL
136 return(GX_SUCCESS);
137 }
138
139
