/* Update LCD screen part */
int hid_update_lcd(void)
{
int i, j, k, l;
uint8_t *lcd_bitmap = &tihw.ram[tihw.lcd_adr];
uint8_t *lcd_buf = (uint8_t *)lcd_bytmap;
GdkRect src;
guchar *p;
tihw.lcd_ptr = (char *) &tihw.ram[tihw.lcd_adr];
if(!pixmap || !lcd_mem || !tihw.lcd_ptr)
return 0;
// Check for LCD state change (from TI HW)
if(lcd_state != tihw.on_off)
{
lcd_state = tihw.on_off;
lcd_changed = 1;
if(!lcd_state)
redraw_lcd(); // to clear LCD
}
// Check for contrast change (from TI HW)
if(contrast != tihw.contrast)
{
gint c = contrast = tihw.contrast;
new_contrast = (c + old_contrast) / 2;
old_contrast = c;
compute_grayscale();
lcd_changed = 1;
}
// Check for gray plane change (menu/hw)
if(max_plane != ngc)
{
max_plane = ngc;
compute_grayscale();
}
// LCD off or unchanged: don't refresh !
if(!lcd_state || !lcd_changed)
return 0;
// Reset LCD changed flag.
lcd_changed = 0;
// Convert the bitmap screen to a bytemap screen and grayscalize
memset(lcd_bytmap, 0, LCDMEM_H*LCDMEM_W);
for(l = 0; l < 8; l++)
{
int pp = gp_seq[ngc][l];
if(pp == -1) break;
lcd_bitmap = lcd_planebufs[pp];
for(j = 0, k = 0; k < LCDMEM_H; k++)
{
for(i = 0; i < LCDMEM_W/8; i++, lcd_bitmap++)
{
lcd_bytmap[j++] += convtab[(*lcd_bitmap << 1) ];
lcd_bytmap[j++] += convtab[(*lcd_bitmap << 1)+1];
}
}
}
if(1)
{
// Copy LCD from buffer to pixbuf
for(j = 0; j < LCDMEM_H; j++)
{
for (i = 0; i < LCDMEM_W; i++)
{
p = li.pixels + j * li.rowstride + i * li.n_channels;
p[0] = grayscales[*lcd_buf].r;
p[1] = grayscales[*lcd_buf].g;
p[2] = grayscales[*lcd_buf].b;
lcd_buf++;
}
}
// Set region to update
src.x = src.y = 0;
src.w = (tihw.log_w > tihw.lcd_w) ? tihw.lcd_w : tihw.log_w;
src.h = (tihw.log_h > tihw.lcd_h) ? tihw.lcd_h : tihw.log_h;
// Copy surface into window
if(sf)
{
src.w = (int)(sf * src.w);
src.h = (int)(sf * src.h);
// scale image
g_object_unref(skin_infos.image);
skin_infos.image = gdk_pixbuf_scale_simple(lcd, lr.w, lr.h, GDK_INTERP_NEAREST);
// and draw image into pixmap (next, into window on expose event)
gdk_draw_pixbuf(pixmap, main_wnd->style->fg_gc[GTK_WIDGET_STATE(main_wnd)],
skin_infos.image, src.x, src.y, lr.x, lr.y, src.w, src.h,
GDK_RGB_DITHER_NONE, 0, 0);
gtk_widget_queue_draw_area(area, lr.x, lr.y, src.w, src.h);
}
else
{
// and draw image into pixmap (next, into window on expose event)
gdk_draw_pixbuf(pixmap, main_wnd->style->fg_gc[GTK_WIDGET_STATE(main_wnd)],
lcd_mem, src.x, src.y, lr.x, lr.y, src.w, src.h,
GDK_RGB_DITHER_NONE, 0, 0);
gtk_widget_queue_draw_area(area, lr.x, lr.y, src.w, src.h);
}
}
// Screen shot
if(!--skip_cnt && shot_cnt > 0)
{
skip_cnt = options2.skips;
hid_screenshot_single();
shot_cnt--;
}
return -1;
}
int hid_init(void)
{
// Found a PC keyboard keymap
match_keymap(tihw.calc_type);
// Load kbd keymap
if(keymap_load(options.keys_file) == -1)
{
gchar *s = g_strdup_printf("unable to load this keymap: <%s>\n", options.keys_file);
tiemu_error(0, s);
g_free(s);
return -1;
}
// Found a skin
match_skin(tihw.calc_type);
// Load skin (2 parts)
if(skin_load(&skin_infos, options.skin_file) == -1)
{
gchar *s = g_strdup_printf("unable to load this skin: <%s>\n", options.skin_file);
tiemu_error(0, s);
g_free(s);
return -1;
}
// Allocate the skn pixbuf (if needed)
skn = skin_infos.image;
// Set skin keymap depending on calculator type
switch(tihw.calc_type)
{
case TI92:
case TI92p:
case V200:
skn_keymap = sknKey92;
break;
case TI89:
case TI89t:
skn_keymap = sknKey89;
break;
default:
{
gchar *s = g_strdup_printf("no skin found for this calc\n");
tiemu_error(0, s);
g_free(s);
return -1;
}
}
// Set window/LCD sizes
set_scale(options.view);
set_infos();
// Allocate the TI screen buffer
lcd_bytmap = (uint32_t *)malloc(LCDMEM_W * LCDMEM_H);
// Allocate the lcd pixbuf
lcd = gdk_pixbuf_new(GDK_COLORSPACE_RGB, FALSE, 8, si.t * LCDMEM_W, si.t * LCDMEM_H);
if(lcd == NULL)
{
gchar *s = g_strdup_printf("unable to create LCD pixbuf.\n");
tiemu_error(0, s);
g_free(s);
return -1;
}
// Used by TI89 (the LCD view is clipped from memory view)
si.l = gdk_pixbuf_new_subpixbuf(lcd, 0, 0, tihw.lcd_w, tihw.lcd_h);
// Constants for LCD update (speed-up)
li.n_channels = gdk_pixbuf_get_n_channels (lcd);
li.width = gdk_pixbuf_get_width (lcd);
li.height = gdk_pixbuf_get_height (lcd);
li.rowstride = gdk_pixbuf_get_rowstride (lcd);
li.pixels = gdk_pixbuf_get_pixels (lcd);
// Create main window
display_main_wnd();
// Allocate the backing pixmap (used for drawing and refresh)
pixmap = gdk_pixmap_new(main_wnd->window, wr.w, wr.h, -1);
if(pixmap == NULL)
{
gchar *s = g_strdup_printf("unable to create backing pixbuf.\n");
tiemu_error(0, s);
g_free(s);
return -1;
}
// Draw the skin and compute grayscale palette
redraw_skin();
compute_grayscale();
// Init the planar/chunky conversion table for LCD
compute_convtable();
// Install LCD refresh: 100 FPS (10 ms)
tid = g_timeout_add((params.lcd_rate == -1) ? 50 : params.lcd_rate,
(GtkFunction)hid_refresh, NULL);
gtk_widget_show(main_wnd); // show wnd here
if(options.view == VIEW_FULL)
gdk_window_fullscreen(main_wnd->window);
return 0;
}
