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/* $Id$ */

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#include "stdafx.h"

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#include "openttd.h"

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#include "functions.h"

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#include "macros.h"

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#include "spritecache.h"

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#include "strings.h"

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#include "string.h"

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#include "gfx.h"

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#include "table/palettes.h"

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#include "table/sprites.h"

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#include "hal.h"

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#include "variables.h"

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#include "genworld.h"

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    17

#ifdef _DEBUG

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bool _dbg_screen_rect;

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#endif

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    21

Colour _cur_palette[256];

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byte _stringwidth_table[FS_END][224];

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    24

static void GfxMainBlitter(const Sprite *sprite, int x, int y, int mode);

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    26

FontSize _cur_fontsize;

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static FontSize _last_fontsize;

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static Pixel _cursor_backup[64 * 64];

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static Rect _invalid_rect;

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static const byte *_color_remap_ptr;

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static byte _string_colorremap[3];

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#define DIRTY_BYTES_PER_LINE (MAX_SCREEN_WIDTH / 64)

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static byte _dirty_blocks[DIRTY_BYTES_PER_LINE * MAX_SCREEN_HEIGHT / 8];

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    36

    37

    38

void memcpy_pitch(void *d, void *s, int w, int h, int spitch, int dpitch)

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{

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	byte *dp = (byte*)d;

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	byte *sp = (byte*)s;

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	assert(h >= 0);

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	for (; h != 0; --h) {

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		memcpy(dp, sp, w);

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		dp += dpitch;

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		sp += spitch;

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	}

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}

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void GfxScroll(int left, int top, int width, int height, int xo, int yo)

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{

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	const Pixel *src;

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	Pixel *dst;

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	int p;

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	int ht;

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	if (xo == 0 && yo == 0) return;

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    61

	if (_cursor.visible) UndrawMouseCursor();

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	UndrawTextMessage();

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	p = _screen.pitch;

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    66

	if (yo > 0) {

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		// Calculate pointers

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		dst = _screen.dst_ptr + (top + height - 1) * p + left;

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		src = dst - yo * p;

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		// Decrease height and increase top

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		top += yo;

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		height -= yo;

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		assert(height > 0);

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		// Adjust left & width

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		if (xo >= 0) {

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			dst += xo;

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			left += xo;

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			width -= xo;

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		} else {

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			src -= xo;

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			width += xo;

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		}

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		for (ht = height; ht > 0; --ht) {

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			memcpy(dst, src, width);

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			src -= p;

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			dst -= p;

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		}

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	} else {

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		// Calculate pointers

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		dst = _screen.dst_ptr + top * p + left;

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		src = dst - yo * p;

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		// Decrese height. (yo is <=0).

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		height += yo;

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		assert(height > 0);

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		// Adjust left & width

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		if (xo >= 0) {

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			dst += xo;

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			left += xo;

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			width -= xo;

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		} else {

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			src -= xo;

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			width += xo;

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		}

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   110

		// the y-displacement may be 0 therefore we have to use memmove,

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		// because source and destination may overlap

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		for (ht = height; ht > 0; --ht) {

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			memmove(dst, src, width);

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			src += p;

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			dst += p;

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		}

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	}

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	// This part of the screen is now dirty.

   119

	_video_driver->make_dirty(left, top, width, height);

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}

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   122

   123

void GfxFillRect(int left, int top, int right, int bottom, int color)

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{

   125

	const DrawPixelInfo* dpi = _cur_dpi;

   126

	Pixel *dst;

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	const int otop = top;

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	const int oleft = left;

   129

   130

	if (dpi->zoom != 0) return;

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	if (left > right || top > bottom) return;

   132

	if (right < dpi->left || left >= dpi->left + dpi->width) return;

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	if (bottom < dpi->top || top >= dpi->top + dpi->height) return;

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   135

	if ( (left -= dpi->left) < 0) left = 0;

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	right = right - dpi->left + 1;

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	if (right > dpi->width) right = dpi->width;

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	right -= left;

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	assert(right > 0);

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   141

	if ( (top -= dpi->top) < 0) top = 0;

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	bottom = bottom - dpi->top + 1;

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	if (bottom > dpi->height) bottom = dpi->height;

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	bottom -= top;

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	assert(bottom > 0);

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   147

	dst = dpi->dst_ptr + top * dpi->pitch + left;

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   149

	if (!(color & PALETTE_MODIFIER_GREYOUT)) {

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		if (!(color & USE_COLORTABLE)) {

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			do {

   152

				memset(dst, color, right);

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				dst += dpi->pitch;

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			} while (--bottom);

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		} else {

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			/* use colortable mode */

   157

			const byte* ctab = GetNonSprite(color & COLORTABLE_MASK) + 1;

   158

   159

			do {

   160

				int i;

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				for (i = 0; i != right; i++) dst[i] = ctab[dst[i]];

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				dst += dpi->pitch;

   163

			} while (--bottom);

   164

		}

   165

	} else {

   166

		byte bo = (oleft - left + dpi->left + otop - top + dpi->top) & 1;

   167

		do {

   168

			int i;

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			for (i = (bo ^= 1); i < right; i += 2) dst[i] = (byte)color;

   170

			dst += dpi->pitch;

   171

		} while (--bottom > 0);

   172

	}

   173

}

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   175

static void GfxSetPixel(int x, int y, int color)

   176

{

   177

	const DrawPixelInfo* dpi = _cur_dpi;

   178

	if ((x-=dpi->left) < 0 || x>=dpi->width || (y-=dpi->top)<0 || y>=dpi->height)

   179

		return;

   180

	dpi->dst_ptr[y * dpi->pitch + x] = color;

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}

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   183

void GfxDrawLine(int x, int y, int x2, int y2, int color)

   184

{

   185

	int dy;

   186

	int dx;

   187

	int stepx;

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	int stepy;

   189

	int frac;

   190

   191

	// Check clipping first

   192

	{

   193

		DrawPixelInfo *dpi = _cur_dpi;

   194

		int t;

   195

   196

		if (x < dpi->left && x2 < dpi->left) return;

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   198

		if (y < dpi->top && y2 < dpi->top) return;

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   200

		t = dpi->left + dpi->width;

   201

		if (x > t && x2 > t) return;

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   203

		t = dpi->top + dpi->height;

   204

		if (y > t && y2 > t) return;

   205

	}

   206

   207

	dy = (y2 - y) * 2;

   208

	if (dy < 0) {

   209

		dy = -dy;

   210

		stepy = -1;

   211

	} else {

   212

		stepy = 1;

   213

	}

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   215

	dx = (x2 - x) * 2;

   216

	if (dx < 0) {

   217

		dx = -dx;

   218

		stepx = -1;

   219

	} else {

   220

		stepx = 1;

   221

	}

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   223

	GfxSetPixel(x, y, color);

   224

	if (dx > dy) {

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		frac = dy - (dx >> 1);

   226

		while (x != x2) {

   227

			if (frac >= 0) {

   228

				y += stepy;

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				frac -= dx;

   230

			}

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			x += stepx;

   232

			frac += dy;

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			GfxSetPixel(x, y, color);

   234

		}

   235

	} else {

   236

		frac = dx - (dy >> 1);

   237

		while (y != y2) {

   238

			if (frac >= 0) {

   239

				x += stepx;

   240

				frac -= dy;

   241

			}

   242

			y += stepy;

   243

			frac += dx;

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			GfxSetPixel(x, y, color);

   245

		}

   246

	}

   247

}

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   249

   250

static inline SpriteID GetFontBase(FontSize size)

   251

{

   252

	switch (size) {

   253

		default: NOT_REACHED();

   254

		case FS_NORMAL: return SPR_ASCII_SPACE;

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		case FS_SMALL:  return SPR_ASCII_SPACE_SMALL;

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		case FS_LARGE:  return SPR_ASCII_SPACE_BIG;

   257

	}

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}

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// ASSIGNMENT OF ASCII LETTERS < 32

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// 0 - end of string

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// 1 - SETX <BYTE>

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// 2 - SETXY <BYTE> <BYTE>

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// 3-7 -

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// 8 - TINYFONT

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// 9 - BIGFONT

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// 10 - newline

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// 11-14 -

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// 15-31 - 17 colors

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   272

   273

enum {

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	ASCII_SETX       =  1,

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	ASCII_SETXY      =  2,

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   277

	ASCII_TINYFONT   =  8,

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	ASCII_BIGFONT    =  9,

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	ASCII_NL         = 10,

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   281

	ASCII_COLORSTART = 15,

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};

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   284

/** Truncate a given string to a maximum width if neccessary.

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 * If the string is truncated, add three dots ('...') to show this.

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 * @param *dest string that is checked and possibly truncated

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 * @param maxw maximum width in pixels of the string

   288

 * @return new width of (truncated) string */

   289

static int TruncateString(char *str, int maxw)

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{

   291

	int w = 0;

   292

	FontSize size = _cur_fontsize;

   293

	int ddd, ddd_w;

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   295

	byte c;

   296

	char *ddd_pos;

   297

   298

	ddd_w = ddd = GetCharacterWidth(size, '.') * 3;

   299

   300

	for (ddd_pos = str; (c = *str++) != '\0'; ) {

   301

		if (c >= ASCII_LETTERSTART) {

   302

			w += GetCharacterWidth(size, c);

   303

   304

			if (w >= maxw) {

   305

				// string got too big... insert dotdotdot

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				ddd_pos[0] = ddd_pos[1] = ddd_pos[2] = '.';

   307

				ddd_pos[3] = 0;

   308

				return ddd_w;

   309

			}

   310

		} else {

   311

			if (c == ASCII_SETX) str++;

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			else if (c == ASCII_SETXY) str += 2;

   313

			else if (c == ASCII_TINYFONT) {

   314

				size = FS_SMALL;

   315

				ddd = GetCharacterWidth(size, '.') * 3;

   316

			} else if (c == ASCII_BIGFONT) {

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				size = FS_LARGE;

   318

				ddd = GetCharacterWidth(size, '.') * 3;

   319

			}

   320

		}

   321

   322

		// Remember the last position where three dots fit.

   323

		if (w + ddd < maxw) {

   324

			ddd_w = w + ddd;

   325

			ddd_pos = str;

   326

		}

   327

	}

   328

   329

	return w;

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}

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static inline int TruncateStringID(StringID src, char *dest, int maxw)

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{

   334

	GetString(dest, src);

   335

	return TruncateString(dest, maxw);

   336

}

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   338

/* returns right coordinate */

   339

int DrawString(int x, int y, StringID str, uint16 color)

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{

   341

	char buffer[512];

   342

   343

	GetString(buffer, str);

   344

	return DoDrawString(buffer, x, y, color);

   345

}

   346

   347

int DrawStringTruncated(int x, int y, StringID str, uint16 color, uint maxw)

   348

{

   349

	char buffer[512];

   350

	TruncateStringID(str, buffer, maxw);

   351

	return DoDrawString(buffer, x, y, color);

   352

}

   353

   354

   355

int DrawStringRightAligned(int x, int y, StringID str, uint16 color)

   356

{

   357

	char buffer[512];

   358

	int w;

   359

   360

	GetString(buffer, str);

   361

	w = GetStringBoundingBox(buffer).width;

   362

	DoDrawString(buffer, x - w, y, color);

   363

   364

	return w;

   365

}

   366

   367

void DrawStringRightAlignedTruncated(int x, int y, StringID str, uint16 color, uint maxw)

   368

{

   369

	char buffer[512];

   370

   371

	TruncateStringID(str, buffer, maxw);

   372

	DoDrawString(buffer, x - GetStringBoundingBox(buffer).width, y, color);

   373

}

   374

   375

void DrawStringRightAlignedUnderline(int x, int y, StringID str, uint16 color)

   376

{

   377

	int w = DrawStringRightAligned(x, y, str, color);

   378

	GfxFillRect(x - w, y + 10, x, y + 10, _string_colorremap[1]);

   379

}

   380

   381

   382

int DrawStringCentered(int x, int y, StringID str, uint16 color)

   383

{

   384

	char buffer[512];

   385

	int w;

   386

   387

	GetString(buffer, str);

   388

   389

	w = GetStringBoundingBox(buffer).width;

   390

	DoDrawString(buffer, x - w / 2, y, color);

   391

   392

	return w;

   393

}

   394

   395

int DrawStringCenteredTruncated(int xl, int xr, int y, StringID str, uint16 color)

   396

{

   397

	char buffer[512];

   398

	int w = TruncateStringID(str, buffer, xr - xl);

   399

	return DoDrawString(buffer, (xl + xr - w) / 2, y, color);

   400

}

   401

   402

int DoDrawStringCentered(int x, int y, const char *str, uint16 color)

   403

{

   404

	int w = GetStringBoundingBox(str).width;

   405

	DoDrawString(str, x - w / 2, y, color);

   406

	return w;

   407

}

   408

   409

void DrawStringCenterUnderline(int x, int y, StringID str, uint16 color)

   410

{

   411

	int w = DrawStringCentered(x, y, str, color);

   412

	GfxFillRect(x - (w >> 1), y + 10, x - (w >> 1) + w, y + 10, _string_colorremap[1]);

   413

}

   414

   415

void DrawStringCenterUnderlineTruncated(int xl, int xr, int y, StringID str, uint16 color)

   416

{

   417

	int w = DrawStringCenteredTruncated(xl, xr, y, str, color);

   418

	GfxFillRect((xl + xr - w) / 2, y + 10, (xl + xr + w) / 2, y + 10, _string_colorremap[1]);

   419

}

   420

   421

static uint32 FormatStringLinebreaks(char *str, int maxw)

   422

{

   423

	int num = 0;

   424

	FontSize size = _cur_fontsize;

   425

	int w;

   426

	char *last_space;

   427

	byte c;

   428

   429

	for (;;) {

   430

		w = 0;

   431

		last_space = NULL;

   432

   433

		for (;;) {

   434

			c = *str++;

   435

			if (c == ASCII_LETTERSTART) last_space = str;

   436

   437

			if (c >= ASCII_LETTERSTART) {

   438

				w += GetCharacterWidth(size, c);

   439

				if (w > maxw) {

   440

					str = last_space;

   441

					if (str == NULL)

   442

						return num + (size << 16);

   443

					break;

   444

				}

   445

			} else {

   446

				if (c == 0) return num + (size << 16);

   447

				if (c == ASCII_NL) break;

   448

   449

				if (c == ASCII_SETX) str++;

   450

				else if (c == ASCII_SETXY) str += 2;

   451

				else if (c == ASCII_TINYFONT) size = FS_SMALL;

   452

				else if (c == ASCII_BIGFONT) size = FS_LARGE;

   453

			}

   454

		}

   455

   456

		num++;

   457

		str[-1] = '\0';

   458

	}

   459

}

   460

   461

void DrawStringMultiCenter(int x, int y, StringID str, int maxw)

   462

{

   463

	char buffer[512];

   464

	uint32 tmp;

   465

	int num, w, mt;

   466

	const char *src;

   467

	byte c;

   468

   469

	GetString(buffer, str);

   470

   471

	tmp = FormatStringLinebreaks(buffer, maxw);

   472

	num = GB(tmp, 0, 16);

   473

   474

	mt = GetCharacterHeight(GB(tmp, 16, 16));

   475

   476

	y -= (mt >> 1) * num;

   477

   478

	src = buffer;

   479

   480

	for (;;) {

   481

		w = GetStringBoundingBox(src).width;

   482

		DoDrawString(src, x - (w>>1), y, 0xFE);

   483

		_cur_fontsize = _last_fontsize;

   484

   485

		for (;;) {

   486

			c = *src++;

   487

			if (c == 0) {

   488

				y += mt;

   489

				if (--num < 0) {

   490

					_cur_fontsize = FS_NORMAL;

   491

					return;

   492

				}

   493

				break;

   494

			} else if (c == ASCII_SETX) {

   495

				src++;

   496

			} else if (c == ASCII_SETXY) {

   497

				src+=2;