deliantra/Deliantra-Client/Client.xs

#include "EXTERN.h"
#include "perl.h"
#include "XSUB.h"

#include <string.h>

#include <SDL.h>
#include <SDL_opengl.h>

#include <pango/pango.h>
#include <pango/pangofc-fontmap.h>
#include <pango/pangoft2.h>

#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <netinet/tcp.h>

static PangoContext *context;
static PangoFontMap *fontmap;

typedef struct cf_layout {
  PangoLayout *pl;
  int base_height;
} *Crossfire__Client__Layout;

static void
layout_get_pixel_size (Crossfire__Client__Layout self, int *w, int *h)
{
  pango_layout_get_pixel_size (self->pl, w, h);

  *w = (*w + 3) & ~3;
  if (!*w) *w = 1;
  if (!*h) *h = 1;
}

MODULE = Crossfire::Client      PACKAGE = Crossfire::Client

PROTOTYPES: ENABLE

BOOT:
{
        fontmap = pango_ft2_font_map_new ();
        context = pango_ft2_font_map_create_context ((PangoFT2FontMap *)fontmap);
}

void
lowdelay (int fd, int val = 1)
        CODE:
        setsockopt (fd, IPPROTO_TCP, TCP_NODELAY, &val, sizeof (val));

char *
gl_version ()
        CODE:
        RETVAL = (char *)glGetString (GL_VERSION);
        OUTPUT:
        RETVAL

char *
gl_extensions ()
        CODE:
        RETVAL = (char *)glGetString (GL_EXTENSIONS);
        OUTPUT:
        RETVAL

void
add_font (char *file)
        CODE:
        FcConfigAppFontAddFile (0, (const FcChar8 *)file); /* no idea wether this is required */

void
set_font (char *file)
        CODE:
{
        int count;
        FcPattern *pattern = FcFreeTypeQuery ((const FcChar8 *)file, 0, 0, &count);
        PangoFontDescription *font = pango_fc_font_description_from_pattern (pattern, 0);
        FcPatternDestroy (pattern);
        pango_context_set_font_description (context, font);
}

MODULE = Crossfire::Client      PACKAGE = Crossfire::Client::Layout

Crossfire::Client::Layout
new (SV *class, int base_height = 10)
        CODE:
        New (0, RETVAL, 1, struct cf_layout);
        RETVAL->base_height = base_height;
        RETVAL->pl = pango_layout_new (context);
        pango_layout_set_wrap (RETVAL->pl, PANGO_WRAP_WORD_CHAR);
        OUTPUT:
        RETVAL

void
DESTROY (Crossfire::Client::Layout self)
        CODE:
        g_object_unref (self->pl);
        Safefree (self);

void
set_markup (Crossfire::Client::Layout self, SV *text_)
        CODE:
{
        STRLEN textlen;
        char *text = SvPVutf8 (text_, textlen);

        pango_layout_set_markup (self->pl, text, textlen);
}

void
set_width (Crossfire::Client::Layout self, int max_width = -1)
        CODE:
        pango_layout_set_width (self->pl, max_width < 0 ? max_width : max_width * PANGO_SCALE);

void
size (Crossfire::Client::Layout self)
        PPCODE:
{
        int w, h;

        PangoFontDescription *font = pango_context_get_font_description (context);
        pango_font_description_set_absolute_size (font, self->base_height * PANGO_SCALE);

        layout_get_pixel_size (self, &w, &h);

        EXTEND (SP, 2);
        PUSHs (sv_2mortal (newSViv (w)));
        PUSHs (sv_2mortal (newSViv (h)));
}

void
render (Crossfire::Client::Layout self)
        PPCODE:
{
        SV *retval;
        int w, h;
        FT_Bitmap bitmap;

        layout_get_pixel_size (self, &w, &h);

        retval = newSV (w * h);
        SvPOK_only (retval);
        SvCUR_set (retval, w * h);

        bitmap.rows       = h;
        bitmap.width      = w;
        bitmap.pitch      = w;
        bitmap.buffer     = (unsigned char*)SvPVX (retval);
        bitmap.num_grays  = 256;
        bitmap.pixel_mode = FT_PIXEL_MODE_GRAY;

        memset (bitmap.buffer, 0, w * h);
            
        pango_ft2_render_layout (&bitmap, self->pl, 0 * PANGO_SCALE, 0 * PANGO_SCALE);

        EXTEND (SP, 3);
        PUSHs (sv_2mortal (newSViv (w)));
        PUSHs (sv_2mortal (newSViv (h)));
        PUSHs (sv_2mortal (retval));
}

MODULE = Crossfire::Client      PACKAGE = Crossfire::Client::Texture

void
draw_quad (SV *self, double x, double y, double w = 0, double h = 0)
        PROTOTYPE: $$$;$$
        CODE:
{
        HV *hv = (HV *)SvRV (self);
        double s = SvNV (*hv_fetch (hv, "s", 1, 1));
        double t = SvNV (*hv_fetch (hv, "t", 1, 1));
        int name = SvIV (*hv_fetch (hv, "name", 4, 1));

        if (items < 5)
          {
            w = SvNV (*hv_fetch (hv, "width",  5, 1));
            h = SvNV (*hv_fetch (hv, "height", 6, 1));
          }

        glBindTexture (GL_TEXTURE_2D, name);
        glBegin (GL_QUADS);
        glTexCoord2d (0, 0); glVertex2d (x    , y    );
        glTexCoord2d (0, t); glVertex2d (x    , y + h);
        glTexCoord2d (s, t); glVertex2d (x + w, y + h);
        glTexCoord2d (s, 0); glVertex2d (x + w, y    );
        glEnd ();
}
Revision:	1.14
Committed:	Tue Apr 11 13:05:11 2006 UTC (18 years, 1 month ago) by root
Branch:	MAIN
Changes since 1.13:	+65 -15 lines
Log Message:	add text layout class and make use of it
#	User	Rev	Content
1	root	1.1	#include "EXTERN.h"
2			#include "perl.h"
3			#include "XSUB.h"
4
5	root	1.5	#include <string.h>
6
7	root	1.2	#include <SDL.h>
8	root	1.3	#include <SDL_opengl.h>
9	root	1.5
10			#include <pango/pango.h>
11	root	1.10	#include <pango/pangofc-fontmap.h>
12	root	1.5	#include <pango/pangoft2.h>
13
14	root	1.10	#include <sys/types.h>
15			#include <sys/socket.h>
16			#include <netinet/in.h>
17			#include <netinet/tcp.h>
18
19	root	1.5	static PangoContext *context;
20			static PangoFontMap *fontmap;
21	root	1.2
22	root	1.14	typedef struct cf_layout {
23			PangoLayout *pl;
24			int base_height;
25			} *Crossfire__Client__Layout;
26
27			static void
28			layout_get_pixel_size (Crossfire__Client__Layout self, int w, int h)
29			{
30			pango_layout_get_pixel_size (self->pl, w, h);
31
32			w = (w + 3) & ~3;
33			if (!w) w = 1;
34			if (!h) h = 1;
35			}
36
37	root	1.1	MODULE = Crossfire::Client PACKAGE = Crossfire::Client
38
39	root	1.11	PROTOTYPES: ENABLE
40
41	root	1.5	BOOT:
42			{
43			fontmap = pango_ft2_font_map_new ();
44	root	1.8	context = pango_ft2_font_map_create_context ((PangoFT2FontMap *)fontmap);
45	root	1.5	}
46
47	root	1.10	void
48			lowdelay (int fd, int val = 1)
49			CODE:
50			setsockopt (fd, IPPROTO_TCP, TCP_NODELAY, &val, sizeof (val));
51
52	root	1.3	char *
53	root	1.4	gl_version ()
54			CODE:
55	root	1.5	RETVAL = (char *)glGetString (GL_VERSION);
56	root	1.4	OUTPUT:
57			RETVAL
58
59			char *
60	root	1.3	gl_extensions ()
61			CODE:
62	root	1.5	RETVAL = (char *)glGetString (GL_EXTENSIONS);
63	root	1.3	OUTPUT:
64			RETVAL
65
66	root	1.5	void
67	root	1.13	add_font (char *file)
68			CODE:
69			FcConfigAppFontAddFile (0, (const FcChar8 )file); / no idea wether this is required */
70
71			void
72	root	1.9	set_font (char *file)
73	root	1.8	CODE:
74			{
75	root	1.9	int count;
76			FcPattern pattern = FcFreeTypeQuery ((const FcChar8 )file, 0, 0, &count);
77	root	1.10	PangoFontDescription *font = pango_fc_font_description_from_pattern (pattern, 0);
78	root	1.9	FcPatternDestroy (pattern);
79	root	1.8	pango_context_set_font_description (context, font);
80			}
81
82	root	1.14	MODULE = Crossfire::Client PACKAGE = Crossfire::Client::Layout
83
84			Crossfire::Client::Layout
85			new (SV *class, int base_height = 10)
86			CODE:
87			New (0, RETVAL, 1, struct cf_layout);
88			RETVAL->base_height = base_height;
89			RETVAL->pl = pango_layout_new (context);
90			pango_layout_set_wrap (RETVAL->pl, PANGO_WRAP_WORD_CHAR);
91			OUTPUT:
92			RETVAL
93
94			void
95			DESTROY (Crossfire::Client::Layout self)
96			CODE:
97			g_object_unref (self->pl);
98			Safefree (self);
99	root	1.13
100	root	1.8	void
101	root	1.14	set_markup (Crossfire::Client::Layout self, SV *text_)
102			CODE:
103	root	1.5	{
104			STRLEN textlen;
105			char *text = SvPVutf8 (text_, textlen);
106	root	1.14
107			pango_layout_set_markup (self->pl, text, textlen);
108			}
109
110			void
111			set_width (Crossfire::Client::Layout self, int max_width = -1)
112			CODE:
113			pango_layout_set_width (self->pl, max_width < 0 ? max_width : max_width * PANGO_SCALE);
114
115			void
116			size (Crossfire::Client::Layout self)
117			PPCODE:
118			{
119			int w, h;
120
121			PangoFontDescription *font = pango_context_get_font_description (context);
122			pango_font_description_set_absolute_size (font, self->base_height * PANGO_SCALE);
123
124			layout_get_pixel_size (self, &w, &h);
125
126			EXTEND (SP, 2);
127			PUSHs (sv_2mortal (newSViv (w)));
128			PUSHs (sv_2mortal (newSViv (h)));
129			}
130
131			void
132			render (Crossfire::Client::Layout self)
133			PPCODE:
134			{
135	root	1.5	SV *retval;
136			int w, h;
137			FT_Bitmap bitmap;
138
139	root	1.14	layout_get_pixel_size (self, &w, &h);
140	root	1.5
141			retval = newSV (w * h);
142			SvPOK_only (retval);
143			SvCUR_set (retval, w * h);
144
145			bitmap.rows = h;
146			bitmap.width = w;
147			bitmap.pitch = w;
148			bitmap.buffer = (unsigned char*)SvPVX (retval);
149			bitmap.num_grays = 256;
150			bitmap.pixel_mode = FT_PIXEL_MODE_GRAY;
151
152			memset (bitmap.buffer, 0, w * h);
153
154	root	1.14	pango_ft2_render_layout (&bitmap, self->pl, 0 * PANGO_SCALE, 0 * PANGO_SCALE);
155	root	1.1
156	root	1.5	EXTEND (SP, 3);
157			PUSHs (sv_2mortal (newSViv (w)));
158			PUSHs (sv_2mortal (newSViv (h)));
159			PUSHs (sv_2mortal (retval));
160			}
161	root	1.11
162			MODULE = Crossfire::Client PACKAGE = Crossfire::Client::Texture
163
164			void
165	root	1.12	draw_quad (SV *self, double x, double y, double w = 0, double h = 0)
166			PROTOTYPE: $$$;$$
167	root	1.11	CODE:
168			{
169	root	1.12	HV hv = (HV )SvRV (self);
170			double s = SvNV (*hv_fetch (hv, "s", 1, 1));
171			double t = SvNV (*hv_fetch (hv, "t", 1, 1));
172			int name = SvIV (*hv_fetch (hv, "name", 4, 1));
173
174			if (items < 5)
175			{
176			w = SvNV (*hv_fetch (hv, "width", 5, 1));
177			h = SvNV (*hv_fetch (hv, "height", 6, 1));
178			}
179
180			glBindTexture (GL_TEXTURE_2D, name);
181			glBegin (GL_QUADS);
182			glTexCoord2d (0, 0); glVertex2d (x , y );
183			glTexCoord2d (0, t); glVertex2d (x , y + h);
184			glTexCoord2d (s, t); glVertex2d (x + w, y + h);
185			glTexCoord2d (s, 0); glVertex2d (x + w, y );
186			glEnd ();
187	root	1.11	}