1 /*****************************************************************************/
5 /* Tiny graphics interface */
9 /* (C) 2002-2009, Ullrich von Bassewitz */
10 /* Roemerstrasse 52 */
11 /* D-70794 Filderstadt */
12 /* EMail: uz@cc65.org */
15 /* This software is provided 'as-is', without any expressed or implied */
16 /* warranty. In no event will the authors be held liable for any damages */
17 /* arising from the use of this software. */
19 /* Permission is granted to anyone to use this software for any purpose, */
20 /* including commercial applications, and to alter it and redistribute it */
21 /* freely, subject to the following restrictions: */
23 /* 1. The origin of this software must not be misrepresented; you must not */
24 /* claim that you wrote the original software. If you use this software */
25 /* in a product, an acknowledgment in the product documentation would be */
26 /* appreciated but is not required. */
27 /* 2. Altered source versions must be plainly marked as such, and must not */
28 /* be misrepresented as being the original software. */
29 /* 3. This notice may not be removed or altered from any source */
32 /*****************************************************************************/
42 #include <tgi/tgi-mode.h>
45 #include <tgi/tgi-error.h>
50 /*****************************************************************************/
52 /*****************************************************************************/
56 /* Constants used for tgi_textstyle */
57 #define TGI_TEXT_HORIZONTAL 0
58 #define TGI_TEXT_VERTICAL 1
60 /* The name of the standard tgi driver for a platform */
61 extern const char tgi_stddrv[];
63 /* The default tgi mode for a platform */
64 extern const unsigned char tgi_stdmode;
68 /*****************************************************************************/
70 /*****************************************************************************/
74 void __fastcall__ tgi_load (unsigned char mode);
75 /* Load and install the matching driver for the given mode. Will just load
76 * the driver and check if loading was successul. Will not switch to gaphics
80 void __fastcall__ tgi_load_driver (const char* name);
81 /* Load and install the given driver. This function is identical to tgi_load
82 * with the only difference that the name of the driver is specified
86 void __fastcall__ tgi_unload (void);
87 /* Uninstall, then unload the currently loaded driver. Will call tgi_done if
91 void __fastcall__ tgi_install (void* driver);
92 /* Install an already loaded driver. */
94 void __fastcall__ tgi_uninstall (void);
95 /* Uninstall the currently loaded driver but do not unload it. Will call
96 * tgi_done if necessary.
99 void __fastcall__ tgi_init (void);
100 /* Initialize the already loaded graphics driver. */
102 void __fastcall__ tgi_done (void);
103 /* End graphics mode, switch back to text mode. Will NOT uninstall or unload
107 unsigned char __fastcall__ tgi_geterror (void);
108 /* Return the error code for the last operation. This will also clear the
112 const char* __fastcall__ tgi_geterrormsg (unsigned char code);
113 /* Get an error message describing the error in code. */
115 void __fastcall__ tgi_clear (void);
116 /* Clear the screen. */
118 unsigned __fastcall__ tgi_getpagecount (void);
119 /* Returns the number of screen pages available. */
121 void __fastcall__ tgi_setviewpage (unsigned char page);
122 /* Set the visible page. Will set an error if the page is not available. */
124 void __fastcall__ tgi_setdrawpage (unsigned char page);
125 /* Set the drawable page. Will set an error if the page is not available. */
127 unsigned char __fastcall__ tgi_getcolorcount (void);
128 /* Get the number of available colors. */
130 unsigned char __fastcall__ tgi_getmaxcolor (void);
131 /* Return the maximum supported color number (the number of colors would
132 * then be getmaxcolor()+1).
135 void __fastcall__ tgi_setcolor (unsigned char color);
136 /* Set the current drawing color. */
138 unsigned char __fastcall__ tgi_getcolor (void);
139 /* Return the current drawing color. */
141 void __fastcall__ tgi_setpalette (const unsigned char* palette);
142 /* Set the palette (not available with all drivers/hardware). palette is
143 * a pointer to as many entries as there are colors.
146 const unsigned char* __fastcall__ tgi_getpalette (void);
147 /* Return the current palette. */
149 const unsigned char* __fastcall__ tgi_getdefpalette (void);
150 /* Return the default palette. */
152 unsigned __fastcall__ tgi_getxres (void);
153 /* Return the resolution in X direction. */
155 unsigned __fastcall__ tgi_getmaxx (void);
156 /* Return the maximum x coordinate. The resolution in x direction is
160 unsigned __fastcall__ tgi_getyres (void);
161 /* Return the resolution in Y direction. */
163 unsigned __fastcall__ tgi_getmaxy (void);
164 /* Return the maximum y coordinate. The resolution in y direction is
168 unsigned char __fastcall__ tgi_getpixel (int x, int y);
169 /* Get the color value of a pixel. */
171 void __fastcall__ tgi_setpixel (int x, int y);
172 /* Plot a pixel in the current drawing color. */
174 void __fastcall__ tgi_gotoxy (int x, int y);
175 /* Set the graphics cursor to the given position. */
177 void __fastcall__ tgi_line (int x1, int y1, int x2, int y2);
178 /* Draw a line in the current drawing color. The graphics cursor will
179 * be set to x2/y2 by this call.
182 void __fastcall__ tgi_lineto (int x2, int y2);
183 /* Draw a line in the current drawing color from the graphics cursor to the
184 * new end point. The graphics cursor will be updated to x2/y2.
187 void __fastcall__ tgi_circle (int x, int y, unsigned char radius);
188 /* Draw a circle in the current drawing color. */
190 void __fastcall__ tgi_bar (int x1, int y1, int x2, int y2);
191 /* Draw a bar (a filled rectangle) using the current color. */
193 void __fastcall__ tgi_textstyle (unsigned char magx, unsigned char magy,
195 /* Set the style for text output. */
197 unsigned __fastcall__ tgi_textwidth (const char* s);
198 /* Calculate the width of the text in pixels according to the current text
202 unsigned __fastcall__ tgi_textheight (const char* s);
203 /* Calculate the height of the text in pixels according to the current text
207 void __fastcall__ tgi_outtext (const char* s);
208 /* Output text at the current graphics cursor position. The graphics cursor
209 * is moved to the end of the text.
212 void __fastcall__ tgi_outtextxy (int x, int y, const char* s);
213 /* Output text at the given cursor position. The graphics cursor is moved to
214 * the end of the text.
217 unsigned __fastcall__ tgi_ioctl (unsigned char code, unsigned val);
218 /* Call the driver specific control function. What this function does for
219 * a specific code depends on the driver. The driver will set an error
220 * for unknown codes or values.