Line data Source code
1 : /* File: pencil_marker.c; Copyright and License: see below */
2 :
3 : #include "pencil_marker.h"
4 : #include "u8/u8_trace.h"
5 : #include <math.h>
6 : #include <stdio.h>
7 : #include <stdlib.h>
8 : #include <assert.h>
9 :
10 4 : void pencil_marker_init( pencil_marker_t *this_ )
11 : {
12 4 : U8_TRACE_BEGIN();
13 :
14 4 : (*this_).dummy = 0; /* prevent warnings on uninitialized usage */
15 :
16 4 : U8_TRACE_END();
17 4 : }
18 :
19 4 : void pencil_marker_destroy( pencil_marker_t *this_ )
20 : {
21 4 : U8_TRACE_BEGIN();
22 :
23 4 : U8_TRACE_END();
24 4 : }
25 :
26 0 : void pencil_marker_mark_focused_rectangle ( const pencil_marker_t *this_, geometry_rectangle_t rect, cairo_t *cr )
27 : {
28 0 : U8_TRACE_BEGIN();
29 0 : assert( NULL != cr );
30 :
31 : static const double YELLOW_BOX_SIZE = 8.0;
32 : static const double TOTAL_SIZE = 9.0;
33 : static const double LINE_WIDTH = 1.0;
34 : static const double GAP = 1.0;
35 :
36 0 : const double left = floor(geometry_rectangle_get_left ( &rect )); /* floor needed to position on pixel boundary*/
37 0 : const double top = floor(geometry_rectangle_get_top ( &rect ));
38 0 : const double right = floor(geometry_rectangle_get_right ( &rect ));
39 0 : const double bottom = floor(geometry_rectangle_get_bottom ( &rect ));
40 :
41 : /* gray lines */
42 0 : cairo_set_source_rgba( cr, 0.55, 0.55, 0.55, 1.0 );
43 :
44 0 : cairo_rectangle ( cr, left-GAP-LINE_WIDTH, top-GAP-TOTAL_SIZE, LINE_WIDTH, YELLOW_BOX_SIZE );
45 0 : cairo_rectangle ( cr, left-GAP-TOTAL_SIZE, top-GAP-LINE_WIDTH, TOTAL_SIZE, LINE_WIDTH );
46 0 : cairo_fill (cr);
47 :
48 0 : cairo_rectangle ( cr, right+GAP, top-GAP-TOTAL_SIZE, LINE_WIDTH, YELLOW_BOX_SIZE );
49 0 : cairo_rectangle ( cr, right+GAP, top-GAP-LINE_WIDTH, TOTAL_SIZE, LINE_WIDTH );
50 0 : cairo_fill (cr);
51 :
52 0 : cairo_rectangle ( cr, right+GAP, bottom+GAP+LINE_WIDTH, LINE_WIDTH, YELLOW_BOX_SIZE );
53 0 : cairo_rectangle ( cr, right+GAP, bottom+GAP, TOTAL_SIZE, LINE_WIDTH );
54 0 : cairo_fill (cr);
55 :
56 0 : cairo_rectangle ( cr, left-GAP-LINE_WIDTH, bottom+GAP+LINE_WIDTH, LINE_WIDTH, YELLOW_BOX_SIZE );
57 0 : cairo_rectangle ( cr, left-GAP-TOTAL_SIZE, bottom+GAP, TOTAL_SIZE, LINE_WIDTH );
58 0 : cairo_fill (cr);
59 :
60 : /* yellow box */
61 0 : cairo_set_source_rgba( cr, 0.95, 1.0, 0.0, 1.0 );
62 :
63 0 : cairo_rectangle ( cr, left-GAP-TOTAL_SIZE, top-GAP-TOTAL_SIZE, YELLOW_BOX_SIZE, YELLOW_BOX_SIZE );
64 0 : cairo_fill (cr);
65 :
66 0 : cairo_rectangle ( cr, right+GAP+LINE_WIDTH, top-GAP-TOTAL_SIZE, YELLOW_BOX_SIZE, YELLOW_BOX_SIZE );
67 0 : cairo_fill (cr);
68 :
69 0 : cairo_rectangle ( cr, left-GAP-TOTAL_SIZE, bottom+GAP+LINE_WIDTH, YELLOW_BOX_SIZE, YELLOW_BOX_SIZE );
70 0 : cairo_fill (cr);
71 :
72 0 : cairo_rectangle ( cr, right+GAP+LINE_WIDTH, bottom+GAP+LINE_WIDTH, YELLOW_BOX_SIZE, YELLOW_BOX_SIZE );
73 0 : cairo_fill (cr);
74 :
75 0 : U8_TRACE_END();
76 0 : }
77 :
78 0 : void pencil_marker_mark_selected_rectangle ( const pencil_marker_t *this_, geometry_rectangle_t rect, cairo_t *cr )
79 : {
80 0 : U8_TRACE_BEGIN();
81 0 : assert( NULL != cr );
82 :
83 : static const double EXPAND_OVER_BORDER = 2.0;
84 : static const double INNER_EDGE = 8.0;
85 :
86 0 : const double left = floor(geometry_rectangle_get_left ( &rect )); /* floor needed to position on pixel boundary*/
87 0 : const double top = floor(geometry_rectangle_get_top ( &rect ));
88 0 : const double right = floor(geometry_rectangle_get_right ( &rect ));
89 0 : const double bottom = floor(geometry_rectangle_get_bottom ( &rect ));
90 :
91 0 : cairo_set_source_rgba( cr, 1.0, 0.3, 0.8, 1.0 );
92 :
93 0 : cairo_move_to( cr, left+INNER_EDGE, top-EXPAND_OVER_BORDER );
94 0 : cairo_line_to( cr, left-EXPAND_OVER_BORDER, top-EXPAND_OVER_BORDER );
95 0 : cairo_line_to( cr, left-EXPAND_OVER_BORDER, top+INNER_EDGE );
96 0 : cairo_close_path( cr );
97 0 : cairo_fill (cr);
98 :
99 0 : cairo_move_to( cr, right-INNER_EDGE, top-EXPAND_OVER_BORDER );
100 0 : cairo_line_to( cr, right+EXPAND_OVER_BORDER, top-EXPAND_OVER_BORDER );
101 0 : cairo_line_to( cr, right+EXPAND_OVER_BORDER, top+INNER_EDGE );
102 0 : cairo_close_path( cr );
103 0 : cairo_fill (cr);
104 :
105 0 : cairo_move_to( cr, right-INNER_EDGE, bottom+EXPAND_OVER_BORDER );
106 0 : cairo_line_to( cr, right+EXPAND_OVER_BORDER, bottom+EXPAND_OVER_BORDER );
107 0 : cairo_line_to( cr, right+EXPAND_OVER_BORDER, bottom-INNER_EDGE );
108 0 : cairo_close_path( cr );
109 0 : cairo_fill (cr);
110 :
111 0 : cairo_move_to( cr, left-EXPAND_OVER_BORDER, bottom-INNER_EDGE );
112 0 : cairo_line_to( cr, left-EXPAND_OVER_BORDER, bottom+EXPAND_OVER_BORDER );
113 0 : cairo_line_to( cr, left+INNER_EDGE, bottom+EXPAND_OVER_BORDER );
114 0 : cairo_close_path( cr );
115 0 : cairo_fill (cr);
116 :
117 0 : const double width = right-left;
118 : static const double LINE_LENGTH = 16.0;
119 : static const double LINE_WIDTH = 1.0;
120 0 : if ( width > 2.0*EXPAND_OVER_BORDER + LINE_LENGTH )
121 : {
122 0 : cairo_rectangle ( cr, left, bottom + EXPAND_OVER_BORDER - LINE_WIDTH, LINE_LENGTH, LINE_WIDTH );
123 0 : cairo_rectangle ( cr, right - LINE_LENGTH, bottom + EXPAND_OVER_BORDER - LINE_WIDTH, LINE_LENGTH, LINE_WIDTH );
124 0 : cairo_fill (cr);
125 0 : cairo_rectangle ( cr, left, top - EXPAND_OVER_BORDER, LINE_LENGTH, LINE_WIDTH );
126 0 : cairo_rectangle ( cr, right - LINE_LENGTH, top - EXPAND_OVER_BORDER, LINE_LENGTH, LINE_WIDTH );
127 0 : cairo_fill (cr);
128 : }
129 0 : const double height = bottom-top;
130 0 : if ( height > 2.0*EXPAND_OVER_BORDER + LINE_LENGTH )
131 : {
132 0 : cairo_rectangle ( cr, left - EXPAND_OVER_BORDER, top, LINE_WIDTH, LINE_LENGTH );
133 0 : cairo_rectangle ( cr, left - EXPAND_OVER_BORDER, bottom - LINE_LENGTH, LINE_WIDTH, LINE_LENGTH );
134 0 : cairo_fill (cr);
135 0 : cairo_rectangle ( cr, right + EXPAND_OVER_BORDER - LINE_WIDTH, top, LINE_WIDTH, LINE_LENGTH );
136 0 : cairo_rectangle ( cr, right + EXPAND_OVER_BORDER - LINE_WIDTH, bottom - LINE_LENGTH, LINE_WIDTH, LINE_LENGTH );
137 0 : cairo_fill (cr);
138 : }
139 :
140 0 : U8_TRACE_END();
141 0 : }
142 :
143 :
144 : /*
145 : Copyright 2016-2025 Andreas Warnke
146 :
147 : Licensed under the Apache License, Version 2.0 (the "License");
148 : you may not use this file except in compliance with the License.
149 : You may obtain a copy of the License at
150 :
151 : http://www.apache.org/licenses/LICENSE-2.0
152 :
153 : Unless required by applicable law or agreed to in writing, software
154 : distributed under the License is distributed on an "AS IS" BASIS,
155 : WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
156 : See the License for the specific language governing permissions and
157 : limitations under the License.
158 : */
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