Atari frontend (credit: Ole Loots)

svn path=/trunk/netsurf/; revision=11218

1 files changed, 293 insertions, 0 deletions

diff --git a/atari/plot/plotter.h b/atari/plot/plotter.h
new file mode 100644
index 000000000..973b70058
--- /dev/null
+++ b/atari/plot/plotter.h
@@ -0,0 +1,293 @@
+/*

+ * Copyright 2010 Ole Loots <ole@monochrom.net>

+ *

+ * This file is part of NetSurf, http://www.netsurf-browser.org/

+ *

+ * NetSurf is free software; you can redistribute it and/or modify

+ * it under the terms of the GNU General Public License as published by

+ * the Free Software Foundation; version 2 of the License.

+ *

+ * NetSurf is distributed in the hope that it will be useful,

+ * but WITHOUT ANY WARRANTY; without even the implied warranty of

+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

+ * GNU General Public License for more details.

+ *

+ * You should have received a copy of the GNU General Public License

+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.

+ */

+#ifndef _GEM_PLOTTER_API_H_

+#define _GEM_PLOTTER_API_H_

+#include <windom.h>

+

+

+

+#ifndef ceilf

+#define ceilf(x) (float)ceil((double)x)

+#endif

+

+#ifdef TEST_PLOTTER

+#define verbose_log 1

+#define LOG(x) do { if (verbose_log) (printf(__FILE__ " %s %i: ", __PRETTY_FUNCTION__, __LINE__), printf x, fputc('\n', stdout)); } while (0)

+#endif

+

+#define MAX_FRAMEBUFS 0x010

+#define C2P (1<<0)	/* C2P convert buffer 1 to buffer 2 */

+/* TODO: implement offscreen buffer switch */

+/* Plotter Flags: */

+#define PLOT_FLAG_OFFSCREEN 0x01

+#define PLOT_FLAG_LOCKED 	0x02

+#define PLOT_FLAG_DITHER 	0x04

+#define PLOT_FLAG_TRANS		0x08

+

+/* Error codes: */

+#define ERR_BUFFERSIZE_EXCEEDS_SCREEN 1

+#define ERR_NO_MEM 2

+#define ERR_PLOTTER_NOT_AVAILABLE 3

+

+static const char * plot_error_codes[] =

+{

+	"None",

+	"ERR_BUFFERSIZE_EXCEEDS_SCREEN",

+	"ERR_NO_MEM",

+	"ERR_PLOTTER_NOT_AVAILABLE"

+};

+

+/* Grapics & Font Plotter Objects: */

+typedef struct s_font_plotter * FONT_PLOTTER;

+typedef struct s_gem_plotter * GEM_PLOTTER;

+typedef struct s_font_plotter * GEM_FONT_PLOTTER; /* for public use ... */

+struct s_font_plotter

+{

+	char * name;

+	int flags;

+	int vdi_handle;

+	void * priv_data;

+	GEM_PLOTTER plotter;

+	

+	bool (*str_width)(FONT_PLOTTER self, const plot_font_style_t *fstyle,

+						const char * str, size_t length, int * width);

+	bool (*str_split)(FONT_PLOTTER self, const plot_font_style_t *fstyle,

+						const char *string, size_t length,

+						int x, size_t *char_offset, int *actual_x);

+	bool (*pixel_position)(FONT_PLOTTER self, const plot_font_style_t *fstyle,

+						const char *string, size_t length,

+						int x, size_t *char_offset, int *actual_x);

+	void (*text)(FONT_PLOTTER self, int x, int y, const char *text, size_t length, const plot_font_style_t *fstyle);

+	void (*dtor)(FONT_PLOTTER self );

+};

+

+

+struct s_clipping {

+	short x0;

+	short y0;

+	short x1;

+	short y1;

+};

+

+struct s_vdi_sysinfo {

+	short vdi_handle;			/* vdi handle 					*/

+	short scr_w;				/* resolution horz. 			*/

+	short scr_h;				/* resolution vert. 			*/

+	short scr_bpp;				/* bits per pixel 				*/

+	int colors;					/* 0=hiclor, 2=mono				*/

+	unsigned long hicolors;		/* if colors = 0				*/

+	short pixelsize;			/* bytes per pixel 				*/

+	unsigned short pitch;		/* row pitch 					*/

+	unsigned short vdiformat;	/* pixel format 				*/

+	unsigned short clut;		/* type of clut support 		*/

+	void * screen;				/* pointer to screen, or NULL	*/

+	unsigned long  screensize;	/* size of screen (in bytes)	*/

+	unsigned long  mask_r;		/* color masks 					*/

+	unsigned long  mask_g;

+	unsigned long  mask_b;

+	unsigned long  mask_a;

+	short maxintin;				/* maximum pxy items 			*/

+	short maxpolycoords;		/* max coords for p_line etc.	*/

+	unsigned long EdDiVersion;	/* EdDi Version or 0 			*/

+	bool rasterscale;			/* raster scaling support		*/

+};

+

+

+

+struct s_frame_buf

+{

+	short x;

+	short y;

+	short w;

+	short h;

+	short vis_x;	/* visible rectangle of the screen buffer */

+	short vis_y;	/* coords are relative to framebuffer location */

+	short vis_w;

+	short vis_h;

+	int size;

+	bool swapped;

+	void * mem;

+};

+

+

+struct s_gem_plotter

+{

+	char * name;         /* name that identifies the Plotter */

+	unsigned long flags;

+	int vdi_handle;

+	struct s_vdi_sysinfo * scr;

+	void * priv_data;

+	int bpp_virt;     	/* bit depth of framebuffer */

+	struct s_clipping clipping;

+	struct s_frame_buf fbuf[MAX_FRAMEBUFS];

+	int cfbi; 			/* current framebuffer index */

+

+	FONT_PLOTTER font_plotter;

+	int (*dtor)(GEM_PLOTTER self);

+	int (*resize)(GEM_PLOTTER self, int w, int h);

+	int (*move)(GEM_PLOTTER self, short x, short y );

+	void * (*lock)(GEM_PLOTTER self);

+	void * (*create_framebuffer)(GEM_PLOTTER self);

+	void * (*switch_to_framebuffer)(GEM_PLOTTER self);

+	int (*unlock)(GEM_PLOTTER self);

+	int (*update_region)(GEM_PLOTTER self, GRECT region);

+	int (*update_screen_region)( GEM_PLOTTER self, GRECT region );

+	int (*update_screen)(GEM_PLOTTER self);

+	int (*put_pixel)(GEM_PLOTTER self, int x, int y, int color );

+	int (*copy_rect)(GEM_PLOTTER self, GRECT src, GRECT dst );

+	int (*clip)(GEM_PLOTTER self, int x0, int y0, int x1, int y1);

+	int (*arc)(GEM_PLOTTER self, int x, int y, int radius, int angle1, int angle2, const plot_style_t * pstyle);

+	int (*disc)(GEM_PLOTTER self, int x, int y, int radius, const plot_style_t * pstyle);

+	int (*line)(GEM_PLOTTER self, int x0, int y0, int x1,	int y1, const plot_style_t * pstyle);

+	int (*rectangle)(GEM_PLOTTER self, int x0, int y0, int x1, int y1, const plot_style_t * pstyle);

+	int (*polygon)(GEM_PLOTTER self, const int *p, unsigned int n,  const plot_style_t * pstyle);

+	int (*path)(GEM_PLOTTER self, const float *p, unsigned int n, int fill, float width, int c, const float transform[6]);

+	int (*bitmap_resize) ( GEM_PLOTTER self, struct bitmap * bm, int nw, int nh );

+	int (*bitmap)(GEM_PLOTTER self, struct bitmap * bmp, int x, int y,

+					unsigned long bg, unsigned long flags );

+	int (*text)(GEM_PLOTTER self, int x, int y, const char *text, size_t length, const plot_font_style_t *fstyle);

+};

+

+

+struct s_driver_table_entry

+{

+	char * name;

+	int (*ctor)( GEM_PLOTTER self );

+	int flags;

+	int max_bpp;

+};

+

+struct s_font_driver_table_entry

+{

+	char * name;

+	int (*ctor)( FONT_PLOTTER self );

+	int flags;

+};

+

+typedef struct s_driver_table_entry * PLOTTER_INFO;

+typedef struct s_font_driver_table_entry * FONT_PLOTTER_INFO;

+

+/* get index to driver in driver list by name */

+static int drvrname_idx( char * name );

+

+/* get s_driver_table_entry from driver table */

+struct s_driver_table_entry * get_screen_driver_entry(char * name);

+

+/* get s_font_driver_table_entry from driver table */

+struct s_font_driver_table_entry * get_font_driver_entry(char * name);

+

+/* fill screen / sys info */

+struct s_vdi_sysinfo * read_vdi_sysinfo(short vdih, struct s_vdi_sysinfo * info );

+

+/*

+   Create an new plotter object

+   Error Values:

+      -1 no mem

+      -2 error configuring plotter

+      -3 Plotter not available

+*/

+GEM_PLOTTER new_plotter(int vdihandle, char * name,

+	GRECT *, int virt_bpp, unsigned long flags, FONT_PLOTTER font_renderer,

+	int * error);

+

+/*

+   Create an new font plotter object

+   Error Values:

+      -1 no mem

+      -2 error configuring font plotter

+      -3 Font Plotter not available

+*/

+FONT_PLOTTER new_font_plotter(int vdihandle, char * name, unsigned long flags, int * error );

+

+/* free the plotter resources */

+int delete_plotter( GEM_PLOTTER p );

+int delete_font_plotter( FONT_PLOTTER p );

+

+

+/* calculate size of intermediate buffer */

+int calc_chunked_buffer_size(int x, int y, int stride, int bpp);

+

+/* calculates the pixel offset from x,y pos */

+int get_pixel_offset( int x, int y, int stride, int bpp );

+

+/* Recalculate visible parts of the framebuffer */

+void update_visible_rect( GEM_PLOTTER p );

+

+/* resolve possible visible parts of the framebuffer in screen coords */

+bool fbrect_to_screen( GEM_PLOTTER self, GRECT box, GRECT * ret );

+

+/* translate an error number */

+const char* plotter_err_str(int i) ;

+

+void dump_font_drivers(void);

+void dump_plot_drivers(void);

+void dump_vdi_info(short);

+

+/* convert an rgb color to vdi1000 color */

+void rgb_to_vdi1000( unsigned char * in, unsigned short * out );

+

+/* convert an rgb color to an index into the web palette */

+short rgb_to_666_index(unsigned char r, unsigned char g, unsigned char b);

+

+/* shared / static methods ... */

+int plotter_get_clip( GEM_PLOTTER self, struct s_clipping * out );

+int plotter_std_clip(GEM_PLOTTER self,int x0, int y0, int x1, int y1);

+void plotter_vdi_clip( GEM_PLOTTER self, bool set);

+

+#define PLOTTER_IS_LOCKED(plotter) ( plotter->private_flags & PLOTTER_FLAG_LOCKED )

+#define FILL_PLOTTER_VTAB( p ) \

+   p->dtor = dtor;\

+   p->resize= resize;\

+   p->move = move;\

+   p->lock = lock;\

+   p->unlock = unlock;\

+   p->update_region = update_region;\

+   p->update_screen_region = update_screen_region;\

+   p->update_screen = update_screen;\

+   p->put_pixel = put_pixel;\

+   p->copy_rect = copy_rect; \

+   p->clip = clip;\

+   p->arc = arc;\

+   p->disc = disc;\

+   p->line = line;\

+   p->rectangle = rectangle;\

+   p->polygon = polygon;\

+   p->path = path;\

+   p->bitmap = bitmap;\

+   p->text = text;\

+

+

+#define FILL_FONT_PLOTTER_VTAB( p ) \

+	p->dtor = dtor;\

+	p->str_width = str_width;\

+	p->str_split = str_split;\

+	p->pixel_position = pixel_position;\

+	p->text = text;\

+

+#define CURFB( p ) \

+	p->fbuf[p->cfbi]

+

+#define FIRSTFB( p ) \

+	p->fbuf[0]

+

+#define OFFSET_WEB_PAL 16

+#define OFFSET_FONT_PAL 232

+#define RGB_TO_VDI(c) rgb_to_666_index( (c&0xFF),(c&0xFF00)>>8,(c&0xFF0000)>>16)+OFFSET_WEB_PAL

+#define ABGR_TO_RGB(c)  ( ((c&0xFF)<<16) | (c&0xFF00) | ((c&0xFF0000)>>16) ) << 8 

+

+#endif