SDL::Pango(3pm)

1SDL::Pango(3)         User Contributed Perl Documentation        SDL::Pango(3)
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NAME

6       SDL::Pango - Text rendering engine
7

SYNOPSIS

12        use SDL;
13        use SDL::Color;
14        use SDL::Surface;
15        use SDL::Overlay;
16        use SDL::Rect;
17        use SDL::Video;
18        use SDL::PixelFormat;
19        use SDL::Pango;
20        use SDL::Pango::Context;
21
22        SDL::Pango::init();
23
24        my $context = SDL::Pango::Context->new;
25        SDL::Pango::set_default_color($context, 0xA7C344FF, 0);
26        SDL::Pango::set_markup($context, 'Hello <b>W<span foreground="red">o</span><i>r</i><u>l</u>d</b>!', -1);
27
28        SDL::init(SDL_INIT_VIDEO);
29
30        my $display = SDL::Video::set_video_mode(640, 480, 32, SDL_SWSURFACE);
31        my $bg      = SDL::Video::map_RGB($display->format, 0x12, 0x22, 0x45);
32        SDL::Video::fill_rect($display, SDL::Rect->new(0, 0, 640, 480), $bg);
33
34        my $surface = SDL::Pango::create_surface_draw($context);
35        SDL::Video::blit_surface($surface, SDL::Rect->new(0, 0, 640, 480), $display, SDL::Rect->new(0, 0, 640, 480));
36
37        SDL::Video::update_rect($display, 0, 0, 0, 0);
38        SDL::delay(2000);
39

CONSTANTS

41       The constants are exported by default. You can avoid this by doing:
42
43        use SDL::Pango ();
44
45       and access them directly:
46
47        SDL::Pango::SDLPANGO_DIRECTION_NEUTRAL;
48
49       or by choosing the export tags below:
50
51       Export tag: ':align'
52
53       SDLPANGO_ALIGN_LEFT
54           Left alignment
55
56       SDLPANGO_ALIGN_CENTER
57           Centered
58
59       SDLPANGO_ALIGN_RIGHT
60           Right alignment
61
62       Export tag: ':direction'
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64       SDLPANGO_DIRECTION_LTR
65           Left to right
66
67       SDLPANGO_DIRECTION_RTL
68           Right to left
69
70       SDLPANGO_DIRECTION_WEAK_LTR
71           Left to right (weak)
72
73       SDLPANGO_DIRECTION_WEAK_RTL
74           Right to left (weak)
75
76       SDLPANGO_DIRECTION_NEUTRAL
77           Neutral
78

METHODS

80   init
81        SDL::Pango::init();
82
83       Initialize the Glib and Pango API. This must be called before using
84       other functions in this library, excepting SDL::Pango::was_init.  SDL
85       does not have to be initialized before this call.
86
87       Returns: always 0.
88
89   was_init
90        my $was_init = SDL::Pango::was_init();
91
92       Query the initialization status of the Glib and Pango API. You may, of
93       course, use this before SDL::Pango::init to avoid initializing twice in
94       a row.
95
96       Returns: Non-zero when already initialized. Zero when not initialized.
97
98   set_default_color
99        SDL::Pango::set_default_color($context, $foreground, $background);
100        SDL::Pango::set_default_color($context, $r1, $g1, $b1, $a1, $r2, $g2, $b2, $a2);
101
102       Sets default foreground and background color when rendering text and
103       markup.
104
105       You can call it with either 2 color-parameters (32-bit RRGGBBAA
106       values), or with 4 separate values for foreground and 4 separate values
107       for background.
108
109   set_minimum_size
110        SDL::Pango::set_minimum_size($context, $width, $height);
111
112       Sets the minimum size of the drawing rectangle.
113
114   set_text
115        SDL::Pango::set_text($context, $text, $length);
116        SDL::Pango::set_text($context, $text, $length, $alignment);
117
118       Set plain text to context. Text must be utf-8. $length chars will be
119       rendered, pass "-1" to render the whole text.
120
121       $alignment can be:
122
123       •   SDLPANGO_ALIGN_LEFT (default)
124
125       •   SDLPANGO_ALIGN_CENTER
126
127       •   SDLPANGO_ALIGN_RIGHT
128
129   set_markup
130        SDL::Pango::set_markup($context, $text, $length);
131
132       Set markup text to context. Text must be utf-8. $length chars will be
133       rendered, pass "-1" to render the whole text.
134
135       See PangoMarkupFormat
136       <http://library.gnome.org/devel/pango/unstable/PangoMarkupFormat.html>
137       for a description about the markup format.
138
139   get_layout_width
140        my $w = SDL::Pango::get_layout_width($context);
141
142       Returns the width of the resulting surface of the given text/markup for
143       this context.
144
145   get_layout_height
146        my $h = SDL::Pango::get_layout_height($context);
147
148       Returns the height of the resulting surface of the given text/markup
149       for this context.
150
151   set_base_direction
152        SDL::Pango::set_base_direction($context, $direction);
153
154       Sets the direction of the text to either left-to-right or right-to-
155       left.
156
157       See "CONSTANTS".
158
159   set_dpi
160        SDL::Pango::set_dpi($context, $dpi_x, $dpi_y);
161
162       Sets the DPI (dots per inch) for this context. Default is 96.
163
164   set_language
165        SDL::Pango::set_language($context, $language);
166
167       Sets the language name for this context.
168
169       See ISO639-2 <http://www.loc.gov/standards/iso639-2/php/code_list.php>.
170
171       Example:
172
173        SDL::Pango::set_language($context, "en");
174
175   draw
176        SDL::Pango::draw($context, $display, $x, $y);
177
178       Draws the text or markup to an existing surface at position $x/$y.
179
180   set_surface_create_args
181        SDL::Pango::set_surface_create_args($context, $flags, $bits, $r_mask, $g_mask, $b_mask, $a_mask);
182
183       Sets the argument that are used when creating a surface via
184       SDL::Pango::create_surface_draw.
185
186       Example:
187
188        SDL::Pango::set_surface_create_args(
189            $context,
190            SDL_SWSURFACE,
191            32,
192            0xFF000000,
193            0x00FF0000,
194            0x0000FF00,
195            0x000000FF
196        );
197
198   create_surface_draw
199        my $surface = SDL::Pango::create_surface_draw($context);
200
201       Creates a new surface and draws the text/markup. You can specify the
202       attributes of the surfaces using SDL::Pango::set_surface_create_args.
203

AUTHORS

205       See "AUTHORS" in SDL.
206

NAME

CATEGORY

SYNOPSIS

CONSTANTS

METHODS

AUTHORS

SEE ALSO