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1 | #include "font.h" |
2 | |
3 | #include "debug.h" |
4 | #include "surface.h" |
5 | #include "utilities.h" |
6 | |
7 | #include <SDL.h> |
8 | #include <SDL_ttf.h> |
9 | #include <vector> |
10 | |
11 | /* TODO: Let the theme choose the font and font size */ |
12 | #define TTF_FONT "/usr/share/fonts/truetype/dejavu/DejaVuSansCondensed.ttf" |
13 | #define TTF_FONT_SIZE 12 |
14 | |
15 | using namespace std; |
16 | |
17 | Font *Font::defaultFont() |
18 | { |
19 | if (!TTF_WasInit() && TTF_Init() < 0) { |
20 | ERROR("Unable to init SDL_ttf library\n"); |
21 | return nullptr; |
22 | } |
23 | |
24 | TTF_Font *font = TTF_OpenFont(TTF_FONT, TTF_FONT_SIZE); |
25 | if (!font) { |
26 | ERROR("Unable to open font\n"); |
27 | return nullptr; |
28 | } |
29 | |
30 | return new Font(font); |
31 | } |
32 | |
33 | Font::Font(TTF_Font *font) |
34 | : font(font) |
35 | { |
36 | fontheight = TTF_FontHeight(font); |
37 | } |
38 | |
39 | Font::~Font() |
40 | { |
41 | TTF_CloseFont(font); |
42 | TTF_Quit(); |
43 | } |
44 | |
45 | int Font::getTextWidth(const char *text) |
46 | { |
47 | int w, h; |
48 | TTF_SizeUTF8(font, text, &w, &h); |
49 | return w; |
50 | } |
51 | |
52 | void Font::write(Surface *surface, const string &text, |
53 | int x, int y, HAlign halign, VAlign valign) |
54 | { |
55 | if (text.find("\n", 0) == string::npos) { |
56 | writeLine(surface, text.c_str(), x, y, halign, valign); |
57 | return; |
58 | } |
59 | |
60 | vector<string> v; |
61 | split(v, text, "\n"); |
62 | |
63 | for (vector<string>::const_iterator it = v.begin(); it != v.end(); it++) { |
64 | writeLine(surface, it->c_str(), x, y, halign, valign); |
65 | y += fontheight; |
66 | } |
67 | } |
68 | |
69 | void Font::writeLine(Surface *surface, const char *text, |
70 | int x, int y, HAlign halign, VAlign valign) |
71 | { |
72 | switch (halign) { |
73 | case HAlignLeft: |
74 | break; |
75 | case HAlignCenter: |
76 | x -= getTextWidth(text) / 2; |
77 | break; |
78 | case HAlignRight: |
79 | x -= getTextWidth(text); |
80 | break; |
81 | } |
82 | |
83 | switch (valign) { |
84 | case VAlignTop: |
85 | break; |
86 | case VAlignMiddle: |
87 | y -= fontheight / 2; |
88 | break; |
89 | case VAlignBottom: |
90 | y -= fontheight; |
91 | break; |
92 | } |
93 | |
94 | SDL_Color color = { 0, 0, 0, 0 }; |
95 | SDL_Surface *s = TTF_RenderUTF8_Blended(font, text, color); |
96 | |
97 | SDL_Rect rect = { (Sint16) x, (Sint16) (y - 1), 0, 0 }; |
98 | SDL_BlitSurface(s, NULL, surface->raw, &rect); |
99 | |
100 | /* Note: rect.x / rect.y are reset everytime because SDL_BlitSurface |
101 | * will modify them if negative */ |
102 | rect.x = x; |
103 | rect.y = y + 1; |
104 | SDL_BlitSurface(s, NULL, surface->raw, &rect); |
105 | |
106 | rect.x = x - 1; |
107 | rect.y = y; |
108 | SDL_BlitSurface(s, NULL, surface->raw, &rect); |
109 | |
110 | rect.x = x + 1; |
111 | rect.y = y; |
112 | SDL_BlitSurface(s, NULL, surface->raw, &rect); |
113 | SDL_FreeSurface(s); |
114 | |
115 | rect.x = x; |
116 | rect.y = y; |
117 | color.r = 0xff; |
118 | color.g = 0xff; |
119 | color.b = 0xff; |
120 | |
121 | s = TTF_RenderUTF8_Blended(font, text, color); |
122 | SDL_BlitSurface(s, NULL, surface->raw, &rect); |
123 | SDL_FreeSurface(s); |
124 | } |
125 |
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