static int enter_graphics_mode (int which)
{
int oldmode = current_vgamode;
vga_setmode (TEXT);
if (vga_setmode (which) < 0) {
sleep(1);
vga_setmode (TEXT);
write_log ("SVGAlib doesn't like my video mode (%d). Giving up.\n", which);
return 0;
}
current_vgamode = which;
linear_mem = 0;
if ((modeinfo.flags & CAPABLE_LINEAR) && ! currprefs.svga_no_linear) {
int val = vga_setlinearaddressing ();
int new_ul = val != -1 ? !need_dither : 0;
if (using_linear == -1)
using_linear = new_ul;
else
if (using_linear != new_ul) {
leave_graphics_mode ();
write_log ("SVGAlib feeling not sure about linear modes???\n");
abort ();
}
if (val != -1) {
linear_mem = (char *)vga_getgraphmem ();
write_log ("Using linear addressing: %p.\n", linear_mem);
}
}
return post_enter_graphics ();
}
static void set_window_for_amiga (void)
{
leave_graphics_mode ();
enter_graphics_mode (vgamode);
if (linear_mem != NULL && !need_dither)
gfxvidinfo.bufmem = linear_mem;
restore_vga_colors ();
}
static int post_enter_graphics (void)
{
vga_setmousesupport (1);
mouse_init("/dev/mouse", vga_getmousetype (), 10);
if (keyboard_init() != 0) {
leave_graphics_mode ();
write_log ("Are you sure you have a keyboard??\n");
return 0;
}
keyboard_seteventhandler (my_kbd_handlerx);
keyboard_translatekeys (DONT_CATCH_CTRLC);
mouse_setxrange (-1000, 1000);
mouse_setyrange (-1000, 1000);
mouse_setposition (0, 0);
return 1;
}
void handle_events (void)
{
int button = mouse_getbutton ();
gui_requested = 0;
keyboard_update ();
mouse_update ();
lastmx += mouse_getx ();
lastmy += mouse_gety ();
mouse_setposition (0, 0);
buttonstate[0] = button & 4;
buttonstate[1] = button & 2;
buttonstate[2] = button & 1;
#ifdef PICASSO96
if (screen_is_picasso && !picasso_vidinfo.extra_mem) {
int i;
char *addr = gfxmemory + (picasso96_state.Address - gfxmem_start);
for (i = 0; i < picasso_vidinfo.height; i++, addr += picasso96_state.BytesPerRow) {
if (!picasso_invalid_lines[i])
continue;
picasso_invalid_lines[i] = 0;
vga_drawscanline (i, addr);
}
}
#endif
if (!screen_is_picasso && gui_requested) {
leave_graphics_mode ();
gui_changesettings ();
enter_graphics_mode (vgamode);
if (linear_mem != NULL && !need_dither)
gfxvidinfo.bufmem = linear_mem;
restore_vga_colors ();
notice_screen_contents_lost ();
}
}
void graphics_leave (void)
{
leave_graphics_mode ();
dumpcustom();
}