C++ running_machine::total_colors方法代码示例

static void gfxset_draw_item(running_machine &machine, gfx_element *gfx, int index, bitmap_rgb32 &bitmap, int dstx, int dsty, int color, int rotate)
{
	static const pen_t default_palette[] =
	{
		MAKE_RGB(0,0,0), MAKE_RGB(0,0,255), MAKE_RGB(0,255,0), MAKE_RGB(0,255,255),
		MAKE_RGB(255,0,0), MAKE_RGB(255,0,255), MAKE_RGB(255,255,0), MAKE_RGB(255,255,255)
	};
	int width = (rotate & ORIENTATION_SWAP_XY) ? gfx->height() : gfx->width();
	int height = (rotate & ORIENTATION_SWAP_XY) ? gfx->width() : gfx->height();
	const rgb_t *palette = (machine.total_colors() != 0) ? palette_entry_list_raw(machine.palette) : NULL;
	UINT32 palette_mask = ~0;
	int x, y;

	if (palette != NULL)
		palette += gfx->colorbase() + color * gfx->granularity();
	else
	{
		palette = default_palette;
		palette_mask = 7;
	}

	/* loop over rows in the cell */
	for (y = 0; y < height; y++)
	{
		UINT32 *dest = &bitmap.pix32(dsty + y, dstx);
		const UINT8 *src = gfx->get_data(index);

		/* loop over columns in the cell */
		for (x = 0; x < width; x++)
		{
			int effx = x, effy = y;
			const UINT8 *s;

			/* compute effective x,y values after rotation */
			if (!(rotate & ORIENTATION_SWAP_XY))
			{
				if (rotate & ORIENTATION_FLIP_X)
					effx = gfx->width() - 1 - effx;
				if (rotate & ORIENTATION_FLIP_Y)
					effy = gfx->height() - 1 - effy;
			}
			else
			{
				int temp;
				if (rotate & ORIENTATION_FLIP_X)
					effx = gfx->height() - 1 - effx;
				if (rotate & ORIENTATION_FLIP_Y)
					effy = gfx->width() - 1 - effy;
				temp = effx; effx = effy; effy = temp;
			}

			/* get a pointer to the start of this source row */
			s = src + effy * gfx->rowbytes();

			/* extract the pixel */
			*dest++ = 0xff000000 | palette[s[effx] & palette_mask];
		}
	}
}

static void palette_handle_keys(running_machine &machine, ui_gfx_state *state)
{
	int rowcount, screencount;
	int total;

	/* handle zoom (minus,plus) */
	if (ui_input_pressed(machine, IPT_UI_ZOOM_OUT))
		state->palette.count /= 2;
	if (ui_input_pressed(machine, IPT_UI_ZOOM_IN))
		state->palette.count *= 2;

	/* clamp within range */
	if (state->palette.count <= 4)
		state->palette.count = 4;
	if (state->palette.count > 64)
		state->palette.count = 64;

	/* handle colormap selection (open bracket,close bracket) */
	if (ui_input_pressed(machine, IPT_UI_PREV_GROUP))
		state->palette.which--;
	if (ui_input_pressed(machine, IPT_UI_NEXT_GROUP))
		state->palette.which++;

	/* clamp within range */
	if (state->palette.which < 0)
		state->palette.which = 0;
	if (state->palette.which > (int)(machine.colortable != NULL))
		state->palette.which = (int)(machine.colortable != NULL);

	/* cache some info in locals */
	total = state->palette.which ? colortable_palette_get_size(machine.colortable) : machine.total_colors();

	/* determine number of entries per row and total */
	rowcount = state->palette.count;
	screencount = rowcount * rowcount;

	/* handle keyboard navigation */
	if (ui_input_pressed_repeat(machine, IPT_UI_UP, 4))
		state->palette.offset -= rowcount;
	if (ui_input_pressed_repeat(machine, IPT_UI_DOWN, 4))
		state->palette.offset += rowcount;
	if (ui_input_pressed_repeat(machine, IPT_UI_PAGE_UP, 6))
		state->palette.offset -= screencount;
	if (ui_input_pressed_repeat(machine, IPT_UI_PAGE_DOWN, 6))
		state->palette.offset += screencount;
	if (ui_input_pressed_repeat(machine, IPT_UI_HOME, 4))
		state->palette.offset = 0;
	if (ui_input_pressed_repeat(machine, IPT_UI_END, 4))
		state->palette.offset = total;

	/* clamp within range */
	if (state->palette.offset + screencount > ((total + rowcount - 1) / rowcount) * rowcount)
		state->palette.offset = ((total + rowcount - 1) / rowcount) * rowcount - screencount;
	if (state->palette.offset < 0)
		state->palette.offset = 0;
}

static void set_pens( running_machine &machine )
{
	cave_state *state = machine.driver_data<cave_state>();
	int pen;

	for (pen = 0; pen < machine.total_colors(); pen++)
	{
		UINT16 data = state->m_paletteram[state->m_palette_map[pen]];

		rgb_t color = MAKE_RGB(pal5bit(data >> 5), pal5bit(data >> 10), pal5bit(data >> 0));

		palette_set_color(machine, pen, color);
	}
}

int sdlvideo_init(running_machine &machine)
{
	int index, tc;

	// extract data from the options
	extract_video_config(machine);

	// ensure we get called on the way out
	machine.add_notifier(MACHINE_NOTIFY_EXIT, machine_notify_delegate(FUNC(video_exit), &machine));

	// set up monitors first
	init_monitors();

	// we need the beam width in a float, contrary to what the core does.
	video_config.beamwidth = machine.options().beam();

	// initialize the window system so we can make windows
	if (sdlwindow_init(machine))
		return 1;

	tc = machine.total_colors();

	// create the windows
	sdl_options &options = downcast<sdl_options &>(machine.options());
	for (index = 0; index < video_config.numscreens; index++)
	{
		sdl_window_config conf;
		memset(&conf, 0, sizeof(conf));
		extract_window_config(machine, index, &conf);
		conf.totalColors = tc;
		if (sdlwindow_video_window_create(machine, index, pick_monitor(options, index), &conf))
			return 1;
	}

	return 0;
}

static void palette_handler(running_machine &machine, render_container *container, ui_gfx_state *state)
{
	int total = state->palette.which ? colortable_palette_get_size(machine.colortable) : machine.total_colors();
	const char *title = state->palette.which ? "COLORTABLE" : "PALETTE";
	const rgb_t *raw_color = palette_entry_list_raw(machine.palette);
	render_font *ui_font = ui_get_font(machine);
	float cellwidth, cellheight;
	float chwidth, chheight;
	float titlewidth;
	float x0, y0;
	render_bounds cellboxbounds;
	render_bounds boxbounds;
	int x, y, skip;

	/* add a half character padding for the box */
	chheight = ui_get_line_height(machine);
	chwidth = ui_font->char_width(chheight, machine.render().ui_aspect(), '0');
	boxbounds.x0 = 0.0f + 0.5f * chwidth;
	boxbounds.x1 = 1.0f - 0.5f * chwidth;
	boxbounds.y0 = 0.0f + 0.5f * chheight;
	boxbounds.y1 = 1.0f - 0.5f * chheight;

	/* the character cell box bounds starts a half character in from the box */
	cellboxbounds = boxbounds;
	cellboxbounds.x0 += 0.5f * chwidth;
	cellboxbounds.x1 -= 0.5f * chwidth;
	cellboxbounds.y0 += 0.5f * chheight;
	cellboxbounds.y1 -= 0.5f * chheight;

	/* add space on the left for 5 characters of text, plus a half character of padding */
	cellboxbounds.x0 += 5.5f * chwidth;

	/* add space on the top for a title, a half line of padding, a header, and another half line */
	cellboxbounds.y0 += 3.0f * chheight;

	/* figure out the title and expand the outer box to fit */
	titlewidth = ui_font->string_width(chheight, machine.render().ui_aspect(), title);
	x0 = 0.0f;
	if (boxbounds.x1 - boxbounds.x0 < titlewidth + chwidth)
		x0 = boxbounds.x0 - (0.5f - 0.5f * (titlewidth + chwidth));

	/* go ahead and draw the outer box now */
	ui_draw_outlined_box(container, boxbounds.x0 - x0, boxbounds.y0, boxbounds.x1 + x0, boxbounds.y1, UI_GFXVIEWER_BG_COLOR);

	/* draw the title */
	x0 = 0.5f - 0.5f * titlewidth;
	y0 = boxbounds.y0 + 0.5f * chheight;
	for (x = 0; title[x] != 0; x++)
	{
		container->add_char(x0, y0, chheight, machine.render().ui_aspect(), ARGB_WHITE, *ui_font, title[x]);
		x0 += ui_font->char_width(chheight, machine.render().ui_aspect(), title[x]);
	}

	/* compute the cell size */
	cellwidth = (cellboxbounds.x1 - cellboxbounds.x0) / (float)state->palette.count;
	cellheight = (cellboxbounds.y1 - cellboxbounds.y0) / (float)state->palette.count;

	/* draw the top column headers */
	skip = (int)(chwidth / cellwidth);
	for (x = 0; x < state->palette.count; x += 1 + skip)
	{
		x0 = boxbounds.x0 + 6.0f * chwidth + (float)x * cellwidth;
		y0 = boxbounds.y0 + 2.0f * chheight;
		container->add_char(x0 + 0.5f * (cellwidth - chwidth), y0, chheight, machine.render().ui_aspect(), ARGB_WHITE, *ui_font, "0123456789ABCDEF"[x & 0xf]);

		/* if we're skipping, draw a point between the character and the box to indicate which */
		/* one it's referring to */
		if (skip != 0)
			container->add_point(x0 + 0.5f * cellwidth, 0.5f * (y0 + chheight + cellboxbounds.y0), UI_LINE_WIDTH, ARGB_WHITE, PRIMFLAG_BLENDMODE(BLENDMODE_ALPHA));
	}

	/* draw the side column headers */
	skip = (int)(chheight / cellheight);
	for (y = 0; y < state->palette.count; y += 1 + skip)

		/* only display if there is data to show */
		if (state->palette.offset + y * state->palette.count < total)
		{
			char buffer[10];

			/* if we're skipping, draw a point between the character and the box to indicate which */
			/* one it's referring to */
			x0 = boxbounds.x0 + 5.5f * chwidth;
			y0 = boxbounds.y0 + 3.5f * chheight + (float)y * cellheight;
			if (skip != 0)
				container->add_point(0.5f * (x0 + cellboxbounds.x0), y0 + 0.5f * cellheight, UI_LINE_WIDTH, ARGB_WHITE, PRIMFLAG_BLENDMODE(BLENDMODE_ALPHA));

			/* draw the row header */
			sprintf(buffer, "%5X", state->palette.offset + y * state->palette.count);
			for (x = 4; x >= 0; x--)
			{
				x0 -= ui_font->char_width(chheight, machine.render().ui_aspect(), buffer[x]);
				container->add_char(x0, y0 + 0.5f * (cellheight - chheight), chheight, machine.render().ui_aspect(), ARGB_WHITE, *ui_font, buffer[x]);
			}
		}

	/* now add the rectangles for the colors */
	for (y = 0; y < state->palette.count; y++)
		for (x = 0; x < state->palette.count; x++)
		{
//.........这里部分代码省略.........

UINT32 ui_gfx_ui_handler(running_machine &machine, render_container *container, UINT32 uistate)
{
	ui_gfx_state *state = &ui_gfx;

	/* if we have nothing, implicitly cancel */
	if (machine.total_colors() == 0 && machine.colortable == NULL && machine.gfx[0] == NULL && machine.tilemap().count() == 0)
		goto cancel;

	/* if we're not paused, mark the bitmap dirty */
	if (!machine.paused())
		state->bitmap_dirty = TRUE;

	/* switch off the state to display something */
again:
	switch (state->mode)
	{
		case 0:
			/* if we have a palette, display it */
			if (machine.total_colors() > 0)
			{
				palette_handler(machine, container, state);
				break;
			}

			/* fall through...*/
			state->mode++;

		case 1:
			/* if we have graphics sets, display them */
			if (machine.gfx[0] != NULL)
			{
				gfxset_handler(machine, container, state);
				break;
			}

			/* fall through...*/
			state->mode++;

		case 2:
			/* if we have tilemaps, display them */
			if (machine.tilemap().count() > 0)
			{
				tilemap_handler(machine, container, state);
				break;
			}

			state->mode = 0;
			goto again;
	}

	/* handle keys */
	if (ui_input_pressed(machine, IPT_UI_SELECT))
	{
		state->mode = (state->mode + 1) % 3;
		state->bitmap_dirty = TRUE;
	}

	if (ui_input_pressed(machine, IPT_UI_PAUSE))
	{
		if (machine.paused())
			machine.resume();
		else
			machine.pause();
	}

	if (ui_input_pressed(machine, IPT_UI_CANCEL) || ui_input_pressed(machine, IPT_UI_SHOW_GFX))
		goto cancel;

	return uistate;

cancel:
	if (!uistate)
		machine.resume();
	state->bitmap_dirty = TRUE;
	return UI_HANDLER_CANCEL;
}