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.\" ========================================================================
.\"
.IX Title "pods::SDL::Pango 3pm"
.TH pods::SDL::Pango 3pm "2020-11-09" "perl v5.32.0" "User Contributed Perl Documentation"
.\" For nroff, turn off justification.  Always turn off hyphenation; it makes
.\" way too many mistakes in technical documents.
.if n .ad l
.nh
.SH "NAME"
SDL::Pango \- Text rendering engine
.SH "CATEGORY"
.IX Header "CATEGORY"
Pango
.SH "SYNOPSIS"
.IX Header "SYNOPSIS"
.Vb 9
\& use SDL;
\& use SDL::Color;
\& use SDL::Surface;
\& use SDL::Overlay;
\& use SDL::Rect;
\& use SDL::Video;
\& use SDL::PixelFormat;
\& use SDL::Pango;
\& use SDL::Pango::Context;
\& 
\& SDL::Pango::init();
\& 
\& my $context = SDL::Pango::Context\->new;
\& SDL::Pango::set_default_color($context, 0xA7C344FF, 0);
\& SDL::Pango::set_markup($context, \*(AqHello <b>W<span foreground="red">o</span><i>r</i><u>l</u>d</b>!\*(Aq, \-1);
\&
\& SDL::init(SDL_INIT_VIDEO);
\& 
\& my $display = SDL::Video::set_video_mode(640, 480, 32, SDL_SWSURFACE);
\& my $bg      = SDL::Video::map_RGB($display\->format, 0x12, 0x22, 0x45);
\& SDL::Video::fill_rect($display, SDL::Rect\->new(0, 0, 640, 480), $bg);
\&
\& my $surface = SDL::Pango::create_surface_draw($context);
\& SDL::Video::blit_surface($surface, SDL::Rect\->new(0, 0, 640, 480), $display, SDL::Rect\->new(0, 0, 640, 480));
\& 
\& SDL::Video::update_rect($display, 0, 0, 0, 0);
\& SDL::delay(2000);
.Ve
.SH "CONSTANTS"
.IX Header "CONSTANTS"
The constants are exported by default. You can avoid this by doing:
.PP
.Vb 1
\& use SDL::Pango ();
.Ve
.PP
and access them directly:
.PP
.Vb 1
\& SDL::Pango::SDLPANGO_DIRECTION_NEUTRAL;
.Ve
.PP
or by choosing the export tags below:
.PP
Export tag: ':align'
.IP "\s-1SDLPANGO_ALIGN_LEFT\s0" 4
.IX Item "SDLPANGO_ALIGN_LEFT"
Left alignment
.IP "\s-1SDLPANGO_ALIGN_CENTER\s0" 4
.IX Item "SDLPANGO_ALIGN_CENTER"
Centered
.IP "\s-1SDLPANGO_ALIGN_RIGHT\s0" 4
.IX Item "SDLPANGO_ALIGN_RIGHT"
Right alignment
.PP
Export tag: ':direction'
.IP "\s-1SDLPANGO_DIRECTION_LTR\s0" 4
.IX Item "SDLPANGO_DIRECTION_LTR"
Left to right
.IP "\s-1SDLPANGO_DIRECTION_RTL\s0" 4
.IX Item "SDLPANGO_DIRECTION_RTL"
Right to left
.IP "\s-1SDLPANGO_DIRECTION_WEAK_LTR\s0" 4
.IX Item "SDLPANGO_DIRECTION_WEAK_LTR"
Left to right (weak)
.IP "\s-1SDLPANGO_DIRECTION_WEAK_RTL\s0" 4
.IX Item "SDLPANGO_DIRECTION_WEAK_RTL"
Right to left (weak)
.IP "\s-1SDLPANGO_DIRECTION_NEUTRAL\s0" 4
.IX Item "SDLPANGO_DIRECTION_NEUTRAL"
Neutral
.SH "METHODS"
.IX Header "METHODS"
.SS "init"
.IX Subsection "init"
.Vb 1
\& SDL::Pango::init();
.Ve
.PP
Initialize the Glib and Pango \s-1API.\s0 This must be called before using other functions in this library, excepting SDL::Pango::was_init. 
\&\s-1SDL\s0 does not have to be initialized before this call.
.PP
Returns: always \f(CW0\fR.
.SS "was_init"
.IX Subsection "was_init"
.Vb 1
\& my $was_init = SDL::Pango::was_init();
.Ve
.PP
Query the initialization status of the Glib and Pango \s-1API.\s0 You may, of course, use this before SDL::Pango::init to avoid initializing twice 
in a row.
.PP
Returns: Non-zero when already initialized. Zero when not initialized.
.SS "set_default_color"
.IX Subsection "set_default_color"
.Vb 2
\& SDL::Pango::set_default_color($context, $foreground, $background);
\& SDL::Pango::set_default_color($context, $r1, $g1, $b1, $a1, $r2, $g2, $b2, $a2);
.Ve
.PP
Sets default foreground and background color when rendering text and markup.
.PP
You can call it with either 2 color-parameters (32\-bit \s-1RRGGBBAA\s0 values), or with 4 separate values for foreground and 4 separate values for 
background.
.SS "set_minimum_size"
.IX Subsection "set_minimum_size"
.Vb 1
\& SDL::Pango::set_minimum_size($context, $width, $height);
.Ve
.PP
Sets the minimum size of the drawing rectangle.
.SS "set_text"
.IX Subsection "set_text"
.Vb 2
\& SDL::Pango::set_text($context, $text, $length);
\& SDL::Pango::set_text($context, $text, $length, $alignment);
.Ve
.PP
Set plain text to context. Text must be utf\-8. \f(CW$length\fR chars will be rendered, pass \f(CW\*(C`\-1\*(C'\fR to render the whole text.
.PP
\&\f(CW$alignment\fR can be:
.IP "\(bu" 4
\&\s-1SDLPANGO_ALIGN_LEFT\s0 (default)
.IP "\(bu" 4
\&\s-1SDLPANGO_ALIGN_CENTER\s0
.IP "\(bu" 4
\&\s-1SDLPANGO_ALIGN_RIGHT\s0
.SS "set_markup"
.IX Subsection "set_markup"
.Vb 1
\& SDL::Pango::set_markup($context, $text, $length);
.Ve
.PP
Set markup text to context. Text must be utf\-8. \f(CW$length\fR chars will be rendered, pass \f(CW\*(C`\-1\*(C'\fR to render the whole text.
.PP
See PangoMarkupFormat <http://library.gnome.org/devel/pango/unstable/PangoMarkupFormat.html> for a description about the markup format.
.SS "get_layout_width"
.IX Subsection "get_layout_width"
.Vb 1
\& my $w = SDL::Pango::get_layout_width($context);
.Ve
.PP
Returns the width of the resulting surface of the given text/markup for this context.
.SS "get_layout_height"
.IX Subsection "get_layout_height"
.Vb 1
\& my $h = SDL::Pango::get_layout_height($context);
.Ve
.PP
Returns the height of the resulting surface of the given text/markup for this context.
.SS "set_base_direction"
.IX Subsection "set_base_direction"
.Vb 1
\& SDL::Pango::set_base_direction($context, $direction);
.Ve
.PP
Sets the direction of the text to either left-to-right or right-to-left.
.PP
See \*(L"\s-1CONSTANTS\*(R"\s0.
.SS "set_dpi"
.IX Subsection "set_dpi"
.Vb 1
\& SDL::Pango::set_dpi($context, $dpi_x, $dpi_y);
.Ve
.PP
Sets the \s-1DPI\s0 (dots per inch) for this context. Default is \f(CW96\fR.
.SS "set_language"
.IX Subsection "set_language"
.Vb 1
\& SDL::Pango::set_language($context, $language);
.Ve
.PP
Sets the language name for this context.
.PP
See \s-1ISO639\-2\s0 <http://www.loc.gov/standards/iso639-2/php/code_list.php>.
.PP
Example:
.PP
.Vb 1
\& SDL::Pango::set_language($context, "en");
.Ve
.SS "draw"
.IX Subsection "draw"
.Vb 1
\& SDL::Pango::draw($context, $display, $x, $y);
.Ve
.PP
Draws the text or markup to an existing surface at position \f(CW$x\fR/\f(CW$y\fR.
.SS "set_surface_create_args"
.IX Subsection "set_surface_create_args"
.Vb 1
\& SDL::Pango::set_surface_create_args($context, $flags, $bits, $r_mask, $g_mask, $b_mask, $a_mask);
.Ve
.PP
Sets the argument that are used when creating a surface via SDL::Pango::create_surface_draw.
.PP
Example:
.PP
.Vb 9
\& SDL::Pango::set_surface_create_args(
\&     $context, 
\&     SDL_SWSURFACE, 
\&     32, 
\&     0xFF000000, 
\&     0x00FF0000, 
\&     0x0000FF00, 
\&     0x000000FF
\& );
.Ve
.SS "create_surface_draw"
.IX Subsection "create_surface_draw"
.Vb 1
\& my $surface = SDL::Pango::create_surface_draw($context);
.Ve
.PP
Creates a new surface and draws the text/markup. You can specify the attributes of the surfaces using SDL::Pango::set_surface_create_args.
.SH "AUTHORS"
.IX Header "AUTHORS"
See \*(L"\s-1AUTHORS\*(R"\s0 in \s-1SDL\s0.
.SH "SEE ALSO"
.IX Header "SEE ALSO"
SDL::Pango::Context, SDL::Video, SDL::Surface, \s-1SDL::TTF\s0