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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"

    10

#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 "table/control_codes.h"

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#include "fontcache.h"

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#include "genworld.h"

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#include "debug.h"

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    20

#ifdef _DEBUG

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bool _dbg_screen_rect;

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#endif

    23

    24

Colour _cur_palette[256];

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byte _stringwidth_table[FS_END][224];

    26

    27

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

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    29

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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    36

#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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    39

void memcpy_pitch(void *dst, void *src, int w, int h, int srcpitch, int dstpitch)

    40

{

    41

	byte *dstp = (byte*)dst;

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	byte *srcp = (byte*)src;

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    44

	assert(h >= 0);

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

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		memcpy(dstp, srcp, w);

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		dstp += dstpitch;

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		srcp += srcpitch;

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	}

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}

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    52

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

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{

    54

	const Pixel *src;

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	Pixel *dst;

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	int p;

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	int ht;

    58

    59

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

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    61

	if (_cursor.visible) UndrawMouseCursor();

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	UndrawTextMessage();

    63

    64

	p = _screen.pitch;

    65

    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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    71

		// 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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    76

		// 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 {

    82

			src -= xo;

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			width += xo;

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		}

    85

    86

		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 {

    92

		// Calculate pointers

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

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		src = dst - yo * p;

    95

    96

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

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		height += yo;

    98

		assert(height > 0);

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   100

		// Adjust left & width

   101

		if (xo >= 0) {

   102

			dst += xo;

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			left += xo;

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			width -= xo;

   105

		} else {

   106

			src -= xo;

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			width += xo;

   108

		}

   109

   110

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

   111

		// because source and destination may overlap

   112

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

   113

			memmove(dst, src, width);

   114

			src += p;

   115

			dst += p;

   116

		}

   117

	}

   118

	// This part of the screen is now dirty.

   119

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

   120

}

   121

   122

   123

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

   124

{

   125

	const DrawPixelInfo* dpi = _cur_dpi;

   126

	Pixel *dst;

   127

	const int otop = top;

   128

	const int oleft = left;

   129

   130

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

   131

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

   132

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

   133

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

   134

   135

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

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	right = right - dpi->left + 1;

   137

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

   138

	right -= left;

   139

	assert(right > 0);

   140

   141

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

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	bottom = bottom - dpi->top + 1;

   143

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

   144

	bottom -= top;

   145

	assert(bottom > 0);

   146

   147

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

   148

   149

	if (!(color & PALETTE_MODIFIER_GREYOUT)) {

   150

		if (!(color & USE_COLORTABLE)) {

   151

			do {

   152

				memset(dst, color, right);

   153

				dst += dpi->pitch;

   154

			} while (--bottom);

   155

		} else {

   156

			/* use colortable mode */

   157

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

   158

   159

			do {

   160

				int i;

   161

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

   162

				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;

   169

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

   170

			dst += dpi->pitch;

   171

		} while (--bottom > 0);

   172

	}

   173

}

   174

   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;

   181

}

   182

   183

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

   184

{

   185

	int dy;

   186

	int dx;

   187

	int stepx;

   188

	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;

   197

   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;

   202

   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) {

   225

		frac = dy - (dx >> 1);

   226

		while (x != x2) {

   227

			if (frac >= 0) {

   228

				y += stepy;

   229

				frac -= dx;

   230

			}

   231

			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;

   244

			GfxSetPixel(x, y, color);

   245

		}

   246

	}

   247

}

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   249

   250

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

   251

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

   252

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

   253

 * @param maxw maximum width in pixels of the string

   254

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

   255

static int TruncateString(char *str, int maxw)

   256

{

   257

	int w = 0;

   258

	FontSize size = _cur_fontsize;

   259

	int ddd, ddd_w;

   260

   261

	WChar c;

   262

	char *ddd_pos;

   263

   264

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

   265

   266

	for (ddd_pos = str; (c = Utf8Consume((const char **)&str)) != '\0'; ) {

   267

		if (IsPrintable(c)) {

   268

			w += GetCharacterWidth(size, c);

   269

   270

			if (w >= maxw) {

   271

				// string got too big... insert dotdotdot

   272

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

   273

				ddd_pos[3] = 0;

   274

				return ddd_w;

   275

			}

   276

		} else {

   277

			if (c == SCC_SETX) str++;

   278

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

   279

			else if (c == SCC_TINYFONT) {

   280

				size = FS_SMALL;

   281

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

   282

			} else if (c == SCC_BIGFONT) {

   283

				size = FS_LARGE;

   284

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

   285

			}

   286

		}

   287

   288

		// Remember the last position where three dots fit.

   289

		if (w + ddd < maxw) {

   290

			ddd_w = w + ddd;

   291

			ddd_pos = str;

   292

		}

   293

	}

   294

   295

	return w;

   296

}

   297

   298

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

   299

{

   300

	GetString(dest, src, last);

   301

	return TruncateString(dest, maxw);

   302

}

   303

   304

/* returns right coordinate */

   305

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

   306

{

   307

	char buffer[512];

   308

   309

	GetString(buffer, str, lastof(buffer));

   310

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

   311

}

   312

   313

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

   314

{

   315

	char buffer[512];

   316

	TruncateStringID(str, buffer, maxw, lastof(buffer));

   317

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

   318

}

   319

   320

   321

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

   322

{

   323

	char buffer[512];

   324

	int w;

   325

   326

	GetString(buffer, str, lastof(buffer));

   327

	w = GetStringBoundingBox(buffer).width;

   328

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

   329

   330

	return w;

   331

}

   332

   333

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

   334

{

   335

	char buffer[512];

   336

   337

	TruncateStringID(str, buffer, maxw, lastof(buffer));

   338

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

   339

}

   340

   341

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

   342

{

   343

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

   344

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

   345

}

   346

   347

   348

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

   349

{

   350

	char buffer[512];

   351

	int w;

   352

   353

	GetString(buffer, str, lastof(buffer));

   354

   355

	w = GetStringBoundingBox(buffer).width;

   356

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

   357

   358

	return w;

   359

}

   360

   361

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

   362

{

   363

	char buffer[512];

   364

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

   365

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

   366

}

   367

   368

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

   369

{

   370

	int w = GetStringBoundingBox(str).width;

   371

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

   372

	return w;

   373

}

   374

   375

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

   376

{

   377

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

   378

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

   379

}

   380

   381

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

   382

{

   383

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

   384

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

   385

}

   386

   387

/** 'Correct' a string to a maximum length. Longer strings will be cut into

   388

 * additional lines at whitespace characters if possible. The string parameter

   389

 * is modified with terminating characters mid-string which are the

   390

 * placeholders for the newlines.<br/>

   391

 * The string WILL be truncated if there was no whitespace for the current

   392

 * line's maximum width.

   393

 *

   394

 * @note To know if the the terminating '\0' is the string end or just a

   395

 * newline, the returned 'num' value should be consulted. The num'th '\0',

   396

 * starting with index 0 is the real string end.

   397

 *

   398

 * @param str string to check and correct for length restrictions

   399

 * @param maxw the maximum width the string can have on one line

   400

 * @return return a 32bit wide number consisting of 2 packed values:

   401

 *  0 - 15 the number of lines ADDED to the string

   402

 * 16 - 31 the fontsize in which the length calculation was done at */

   403

uint32 FormatStringLinebreaks(char *str, int maxw)

   404

{

   405

	FontSize size = _cur_fontsize;

   406

	int num = 0;

   407

   408

	assert(maxw > 0);

   409

   410

	for (;;) {

   411

		char *last_space = NULL;

   412

		int w = 0;

   413

   414

		for (;;) {

   415

			WChar c = Utf8Consume((const char **)&str);

   416

			/* whitespace is where we will insert the line-break */

   417

			if (c == ' ') last_space = str;

   418

   419

			if (IsPrintable(c)) {

   420

				w += GetCharacterWidth(size, c);

   421

				/* string is longer than maximum width so we need to decide what to

   422

				 * do. We can do two things:

   423

				 * 1. If no whitespace was found at all up until now (on this line) then

   424

				 *    we will truncate the string and bail out.

   425

				 * 2. In all other cases force a linebreak at the last seen whitespace */

   426

				if (w > maxw) {

   427

					if (last_space == NULL) {

   428

						str[-1] = '\0';

   429

						return num + (size << 16);

   430

					}

   431

					str = last_space;

   432

					break;

   433

				}

   434

			} else {

   435

				switch (c) {

   436

					case '\0': return num + (size << 16); break;

   437

					case SCC_SETX:  str++; break;

   438

					case SCC_SETXY: str +=2; break;

   439

					case SCC_TINYFONT: size = FS_SMALL; break;

   440

					case SCC_BIGFONT:  size = FS_LARGE; break;

   441

					case '\n': goto end_of_inner_loop;

   442

				}

   443

			}

   444

		}

   445

end_of_inner_loop:

   446

		/* string didn't fit on line, so 'dummy' terminate and increase linecount */

   447

		num++;

   448

		str[-1] = '\0';

   449

	}

   450

}

   451

   452

/** Draw a given string with the centre around the given x coordinates

   453

 * @param x Centre the string around this pixel width

   454

 * @param y Draw the string at this pixel height (first line's bottom)

   455

 * @param str String to draw

   456

 * @param max Maximum width the string can have before it is wrapped */

   457

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

   458

{

   459

	char buffer[512];

   460

	uint32 tmp;

   461

	int num, w, mt;

   462

	const char *src;

   463

	WChar c;

   464

   465

	GetString(buffer, str, lastof(buffer));

   466

   467

	tmp = FormatStringLinebreaks(buffer, maxw);

   468

	num = GB(tmp, 0, 16);

   469

   470

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

   471

   472

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

   473

   474

	src = buffer;

   475

   476

	for (;;) {

   477

		w = GetStringBoundingBox(src).width;

   478

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

   479

		_cur_fontsize = _last_fontsize;

   480

   481

		for (;;) {

   482

			c = Utf8Consume(&src);

   483

			if (c == 0) {

   484

				y += mt;

   485

				if (--num < 0) {

   486

					_cur_fontsize = FS_NORMAL;

   487

					return;

   488

				}

   489

				break;

   490

			} else if (c == SCC_SETX) {

   491

				src++;

   492

			} else if (c == SCC_SETXY) {

   493

				src+=2;

   494

			}