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drawing_helper.c
1 /**********************************************************
2 *
3 * mp3splt-gtk -- utility based on mp3splt,
4 * for mp3/ogg splitting without decoding
5 *
6 * Copyright: (C) 2005-2013 Alexandru Munteanu
7 * Contact: m@ioalex.net
8 *
9 * http://mp3splt.sourceforge.net/
10 *
11 *********************************************************/
12
13 /**********************************************************
14 *
15 * This program is free software; you can redistribute it and/or
16 * modify it under the terms of the GNU General Public License
17 * as published by the Free Software Foundation; either version 2
18 * of the License, or (at your option) any later version.
19 *
20 * This program is distributed in the hope that it will be useful,
21 * but WITHOUT ANY WARRANTY; without even the implied warranty of
22 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
23 * GNU General Public License for more details.
24 *
25 * You should have received a copy of the GNU General Public License
26 * along with this program; if not, write to the Free Software
27 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
28 * USA.
29 *
30 *********************************************************/
31
32 #include "drawing_helper.h"
33
34 void dh_set_color(cairo_t *cairo, GdkColor *color)
35 {
36 gdk_cairo_set_source_color(cairo, color);
37 }
38
39 void dh_set_white_color(cairo_t *cairo_surface)
40 {
41 GdkColor color;
42 color.red = 255 * 255;color.green = 255 * 255;color.blue = 255 * 255;
43 dh_set_color(cairo_surface, &color);
44 }
45
46 void dh_set_red_color(cairo_t *cairo_surface)
47 {
48 GdkColor color;
49 color.red = 255 * 255;color.green = 0 * 255;color.blue = 0 * 255;
50 dh_set_color(cairo_surface, &color);
51 }
52
53 void dh_draw_rectangle(cairo_t *cairo, gboolean filled, gint x, gint y,
54 gint width, gint height)
55 {
56 cairo_rectangle(cairo, x, y, width, height);
57
58 if (filled)
59 {
60 cairo_fill(cairo);
61 }
62
63 cairo_stroke(cairo);
64 }
65
66 void dh_draw_arc(cairo_t *cairo, gboolean filled, gint x, gint y,
67 double radius, double angle1, double angle2)
68 {
69 cairo_arc(cairo, x, y, radius, angle1, angle2);
70
71 if (filled)
72 {
73 cairo_fill(cairo);
74 }
75
76 cairo_stroke(cairo);
77 }
78
79 void dh_draw_text(cairo_t *cairo, const gchar *text, gint x, gint y)
80 {
81 dh_draw_text_with_size(cairo, text, x, y, 11.0);
82 }
83
84 void dh_draw_text_with_size(cairo_t *cairo, const gchar *text, gint x, gint y,
85 gdouble font_size)
86 {
87 cairo_select_font_face(cairo, "Sans 11", CAIRO_FONT_SLANT_NORMAL, CAIRO_FONT_WEIGHT_NORMAL);
88 cairo_set_font_size(cairo, font_size);
89
90 cairo_move_to(cairo, x, y + 13);
91 cairo_show_text(cairo, text);
92 }
93
94 void dh_draw_line_with_width(cairo_t *cairo, gint x1, gint y1, gint x2, gint y2,
95 gboolean line_is_dashed, gboolean stroke, double line_width)
96 {
97 double dashes[] = { 1.0, 3.0 };
98 if (line_is_dashed)
99 {
100 cairo_set_dash(cairo, dashes, 2, -50.0);
101 }
102 else
103 {
104 cairo_set_dash(cairo, dashes, 0, 0.0);
105 }
106
107 cairo_set_line_width(cairo, line_width);
108 cairo_set_line_cap(cairo, CAIRO_LINE_CAP_ROUND);
109 cairo_move_to(cairo, x1, y1);
110 cairo_line_to(cairo, x2, y2);
111
112 if (stroke)
113 {
114 cairo_stroke(cairo);
115 }
116 }
117
118 void dh_draw_line(cairo_t *cairo, gint x1, gint y1, gint x2, gint y2,
119 gboolean line_is_dashed, gboolean stroke)
120 {
121 dh_draw_line_with_width(cairo, x1, y1, x2, y2, line_is_dashed, stroke, 1.2);
122 }
123
124 void draw_point(cairo_t *cairo, gint x, gint y)
125 {
126 dh_draw_line(cairo, x, y, x, y, FALSE, FALSE);
127 }
128
129