Line data Source code
1 : /* File: draw_diagram_label.c; Copyright and License: see below */
2 :
3 : #include "draw/draw_diagram_label.h"
4 : #include "u8/u8_trace.h"
5 : #include "entity/data_classifier.h"
6 : #include "entity/data_diagramelement.h"
7 : #include "u8/u8_f64.h"
8 : #include "utf8stringbuf/utf8stringbuf.h"
9 : #include "utf8stringbuf/utf8string.h"
10 : #include <pango/pangocairo.h>
11 : #include <stdio.h>
12 : #include <stdlib.h>
13 : #include <assert.h>
14 :
15 : static const int DRAW_DIAGRAM_PANGO_AUTO_DETECT_LENGTH = -1;
16 :
17 0 : void draw_diagram_label_init( draw_diagram_label_t *this_ )
18 : {
19 0 : draw_stereotype_icon_init( &((*this_).image_renderer) );
20 0 : }
21 :
22 0 : void draw_diagram_label_destroy( draw_diagram_label_t *this_ )
23 : {
24 0 : draw_stereotype_icon_destroy( &((*this_).image_renderer) );
25 0 : }
26 :
27 0 : void draw_diagram_label_get_type_and_name_dimensions ( const draw_diagram_label_t *this_,
28 : const data_diagram_t *diagram,
29 : const data_profile_part_t *profile,
30 : const geometry_dimensions_t *proposed_bounds,
31 : const pencil_size_t *pencil_size,
32 : PangoLayout *font_layout,
33 : geometry_dimensions_t *out_label_dim )
34 : {
35 0 : U8_TRACE_BEGIN();
36 0 : assert( NULL != diagram );
37 0 : assert( NULL != profile );
38 0 : assert( NULL != proposed_bounds );
39 0 : assert( NULL != pencil_size );
40 0 : assert( NULL != font_layout );
41 0 : assert( NULL != out_label_dim );
42 :
43 0 : if ( data_diagram_is_valid( diagram ) )
44 : {
45 : /* calc stereotype image bounds */
46 0 : const char *const diagram_stereotype = data_diagram_get_stereotype_const( diagram );
47 : const bool has_stereotype_image
48 0 : = draw_stereotype_icon_exists( &((*this_).image_renderer), diagram_stereotype, profile );
49 0 : const geometry_dimensions_t icon_dim
50 : = has_stereotype_image
51 0 : ? draw_stereotype_icon_get_dimensions( &((*this_).image_renderer), pencil_size )
52 0 : : (geometry_dimensions_t){ .width = 0.0, .height = 0.0 };
53 0 : const double icon_gap = has_stereotype_image ? pencil_size_get_standard_object_border( pencil_size ) : 0.0;
54 :
55 : /* calc name text dimensions */
56 : /* int proposed_pango_width = geometry_dimensions_get_width( proposed_bounds ); */
57 0 : int text2_height = 0;
58 0 : int text2_width = 0;
59 0 : if ( 0 != utf8string_get_length( data_diagram_get_name_const( diagram ) ))
60 : {
61 0 : pango_layout_set_font_description( font_layout, pencil_size_get_standard_font_description( pencil_size ) );
62 0 : pango_layout_set_text( font_layout,
63 : data_diagram_get_name_const( diagram ),
64 : DRAW_DIAGRAM_PANGO_AUTO_DETECT_LENGTH
65 : );
66 0 : pango_layout_get_pixel_size (font_layout, &text2_width, &text2_height);
67 0 : text2_height += PENCIL_SIZE_FONT_ALIGN_MARGIN; /* allow to align font with pixel border */
68 0 : text2_width += PENCIL_SIZE_FONT_ALIGN_MARGIN;
69 : }
70 :
71 0 : *out_label_dim = (geometry_dimensions_t) {
72 0 : .width = geometry_dimensions_get_width( &icon_dim ) + icon_gap + text2_width,
73 0 : .height = u8_f64_max2( geometry_dimensions_get_height( &icon_dim ), text2_height )
74 : };
75 : }
76 : else
77 : {
78 0 : U8_LOG_ERROR("invalid diagram in draw_diagram_label_get_type_and_name_dimensions()");
79 0 : *out_label_dim = (geometry_dimensions_t) { .width = 0.0, .height = 0.0 };
80 : }
81 0 : U8_TRACE_END();
82 0 : }
83 :
84 0 : void draw_diagram_label_draw_type_and_name ( const draw_diagram_label_t *this_,
85 : const data_diagram_t *diagram,
86 : const data_profile_part_t *profile,
87 : const GdkRGBA *color,
88 : const geometry_rectangle_t *label_box,
89 : const pencil_size_t *pencil_size,
90 : PangoLayout *font_layout,
91 : cairo_t *cr )
92 : {
93 0 : U8_TRACE_BEGIN();
94 0 : assert( NULL != diagram );
95 0 : assert( NULL != profile );
96 0 : assert( NULL != color );
97 0 : assert( NULL != label_box );
98 0 : assert( NULL != pencil_size );
99 0 : assert( NULL != font_layout );
100 0 : assert( NULL != cr );
101 :
102 : /* calc bounds of stereotype icon */
103 0 : const char *const diagram_stereotype = data_diagram_get_stereotype_const( diagram );
104 : const bool has_stereotype_image
105 0 : = draw_stereotype_icon_exists( &((*this_).image_renderer), diagram_stereotype, profile );
106 0 : const geometry_rectangle_t stereotype_box
107 : = has_stereotype_image
108 0 : ? draw_stereotype_icon_get_bounds( &((*this_).image_renderer),
109 : geometry_rectangle_get_left( label_box ),
110 : geometry_rectangle_get_top( label_box ),
111 : GEOMETRY_H_ALIGN_LEFT,
112 : GEOMETRY_V_ALIGN_TOP,
113 : pencil_size
114 : )
115 0 : : (geometry_rectangle_t){ .left = 0.0, .top = 0.0, .width = 0.0, .height = 0.0 };
116 0 : const double icon_gap = has_stereotype_image ? pencil_size_get_standard_object_border( pencil_size ) : 0.0;
117 :
118 : /* draw stereotype icon */
119 0 : if ( has_stereotype_image )
120 : {
121 : u8_error_info_t err_info;
122 : const u8_error_t stereotype_err
123 0 : = draw_stereotype_icon_draw( &((*this_).image_renderer),
124 : diagram_stereotype,
125 : profile,
126 : color,
127 : &err_info,
128 : &stereotype_box,
129 : cr
130 : );
131 0 : if ( u8_error_info_is_error( &err_info ) )
132 : {
133 0 : U8_LOG_WARNING_INT( "stereotype image: unxpected token in svg path in line",
134 : u8_error_info_get_line( &err_info )
135 : );
136 : }
137 0 : else if ( stereotype_err != U8_ERROR_NONE )
138 : {
139 0 : U8_LOG_WARNING_HEX( "error at drawing stereotype image", stereotype_err );
140 : }
141 : }
142 :
143 : /* define names for input data */
144 0 : const double text_left
145 0 : = geometry_rectangle_get_left( label_box ) + geometry_rectangle_get_width( &stereotype_box ) + icon_gap;
146 0 : const double text_top = geometry_rectangle_get_top( label_box );
147 :
148 : /* draw name text */
149 0 : if ( 0 != utf8string_get_length( data_diagram_get_name_const( diagram ) ))
150 : {
151 0 : cairo_set_source_rgba( cr, color->red, color->green, color->blue, color->alpha );
152 0 : pango_layout_set_font_description (font_layout, pencil_size_get_standard_font_description(pencil_size) );
153 0 : pango_layout_set_text( font_layout,
154 : data_diagram_get_name_const( diagram ),
155 : DRAW_DIAGRAM_PANGO_AUTO_DETECT_LENGTH
156 : );
157 :
158 : /* draw text */
159 0 : cairo_move_to ( cr, ceil( text_left ), ceil( text_top ) ); /* align font with pixel border */
160 0 : pango_cairo_show_layout (cr, font_layout);
161 : }
162 :
163 0 : U8_TRACE_END();
164 0 : }
165 :
166 :
167 : /*
168 : Copyright 2017-2025 Andreas Warnke
169 : http://www.apache.org/licenses/LICENSE-2.0
170 :
171 : Licensed under the Apache License, Version 2.0 (the "License");
172 : you may not use this file except in compliance with the License.
173 : You may obtain a copy of the License at
174 :
175 :
176 : Unless required by applicable law or agreed to in writing, software
177 : distributed under the License is distributed on an "AS IS" BASIS,
178 : WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
179 : See the License for the specific language governing permissions and
180 : limitations under the License.
181 : */
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