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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 "player.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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    16

#ifdef _DEBUG

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bool _dbg_screen_rect;

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#endif

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    20

Colour _cur_palette[256];

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byte _stringwidth_table[FS_END][224];

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    23

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

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    25

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

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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    60

	if (_cursor.visible) UndrawMouseCursor();

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	UndrawTextMessage();

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    63

	p = _screen.pitch;

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	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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   109

		// 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.

   118

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

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}

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   121

   122

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

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{

   124

	const DrawPixelInfo* dpi = _cur_dpi;

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	Pixel *dst;

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	const int otop = top;

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	const int oleft = left;

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   129

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

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

   131

	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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   134

	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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	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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   146

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

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   148

	if (!(color & PALETTE_MODIFIER_GREYOUT)) {

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		if (!(color & USE_COLORTABLE)) {

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			do {

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				memset(dst, color, right);

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				dst += dpi->pitch;

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			} while (--bottom);

   154

		} else {

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			/* use colortable mode */

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

   157

   158

			do {

   159

				int i;

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

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				dst += dpi->pitch;

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			} while (--bottom);

   163

		}

   164

	} else {

   165

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

   166

		do {

   167

			int i;

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

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			dst += dpi->pitch;

   170

		} while (--bottom > 0);

   171

	}

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}

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   174

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

   175

{

   176

	const DrawPixelInfo* dpi = _cur_dpi;

   177

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

   178

		return;

   179

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

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}

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   182

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

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{

   184

	int dy;

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	int dx;

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	int stepx;

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	int stepy;

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	int frac;

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   190

	// Check clipping first

   191

	{

   192

		DrawPixelInfo *dpi = _cur_dpi;

   193

		int t;

   194

   195

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

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   197

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

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   199

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

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

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   202

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

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

   204

	}

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   206

	dy = (y2 - y) * 2;

   207

	if (dy < 0) {

   208

		dy = -dy;

   209

		stepy = -1;

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	} else {

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		stepy = 1;

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	}

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   214

	dx = (x2 - x) * 2;

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	if (dx < 0) {

   216

		dx = -dx;

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		stepx = -1;

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	} else {

   219

		stepx = 1;

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	}

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   222

	GfxSetPixel(x, y, color);

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	if (dx > dy) {

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		frac = dy - (dx >> 1);

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		while (x != x2) {

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			if (frac >= 0) {

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				y += stepy;

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				frac -= dx;

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			}

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			x += stepx;

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			frac += dy;

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			GfxSetPixel(x, y, color);

   233

		}

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	} else {

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		frac = dx - (dy >> 1);

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		while (y != y2) {

   237

			if (frac >= 0) {

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				x += stepx;

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				frac -= dy;

   240

			}

   241

			y += stepy;

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			frac += dx;

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			GfxSetPixel(x, y, color);

   244

		}

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	}

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}

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   248

   249

static inline SpriteID GetFontBase(FontSize size)

   250

{

   251

	switch (size) {

   252

		default: NOT_REACHED();

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		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;

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	}

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}

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   260

// 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

enum {

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	ASCII_SETX = 1,

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	ASCII_SETXY = 2,

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	ASCII_TINYFONT = 8,

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	ASCII_BIGFONT = 9,

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	ASCII_NL = 10,

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   280

	ASCII_COLORSTART = 15,

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};

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/** 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

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

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static int TruncateString(char *str, int maxw)

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{

   290

	int w = 0;

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	FontSize size = _cur_fontsize;

   292

	int ddd, ddd_w;

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   294

	byte c;

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	char *ddd_pos;

   296

   297

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

   298

   299

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

   300

		if (c >= ASCII_LETTERSTART) {

   301

			w += GetCharacterWidth(size, c);

   302

   303

			if (w >= maxw) {

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				// string got too big... insert dotdotdot

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

   306

				ddd_pos[3] = 0;

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				return ddd_w;

   308

			}

   309

		} else {

   310

			if (c == ASCII_SETX) str++;

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

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			else if (c == ASCII_TINYFONT) {

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				size = FS_SMALL;

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

   315

			} else if (c == ASCII_BIGFONT) {

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				size = FS_LARGE;

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

   318

			}

   319

		}

   320

   321

		// Remember the last position where three dots fit.

   322

		if (w + ddd < maxw) {

   323

			ddd_w = w + ddd;

   324

			ddd_pos = str;

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		}

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	}

   327

   328

	return w;

   329

}

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   331

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

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{

   333

	GetString(dest, src);

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	return TruncateString(dest, maxw);

   335

}

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   337

/* returns right coordinate */

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

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{

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	char buffer[512];

   341

   342

	GetString(buffer, str);

   343

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

   344

}

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   346

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

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{

   348

	char buffer[512];

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	TruncateStringID(str, buffer, maxw);

   350

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

   351

}

   352

   353

   354

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

   355

{

   356

	char buffer[512];

   357

   358

	GetString(buffer, str);

   359

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

   360

}

   361

   362

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

   363

{

   364

	char buffer[512];

   365

   366

	TruncateStringID(str, buffer, maxw);

   367

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

   368

}

   369

   370

   371

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

   372

{

   373

	char buffer[512];

   374

	int w;

   375

   376

	GetString(buffer, str);

   377

   378

	w = GetStringWidth(buffer);

   379

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

   380

   381

	return w;

   382

}

   383

   384

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

   385

{

   386

	char buffer[512];

   387

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

   388

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

   389

}

   390

   391

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

   392

{

   393

	int w = GetStringWidth(str);

   394

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

   395

	return w;

   396

}

   397

   398

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

   399

{

   400

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

   401

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

   402

}

   403

   404

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

   405

{

   406

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

   407

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

   408

}

   409

   410

static uint32 FormatStringLinebreaks(char *str, int maxw)

   411

{

   412

	int num = 0;

   413

	FontSize size = _cur_fontsize;

   414

	int w;

   415

	char *last_space;

   416

	byte c;

   417

   418

	for (;;) {

   419

		w = 0;

   420

		last_space = NULL;

   421

   422

		for (;;) {

   423

			c = *str++;

   424

			if (c == ASCII_LETTERSTART) last_space = str;

   425

   426

			if (c >= ASCII_LETTERSTART) {

   427

				w += GetCharacterWidth(size, c);

   428

				if (w > maxw) {

   429

					str = last_space;

   430

					if (str == NULL)

   431

						return num + (size << 16);

   432

					break;

   433

				}

   434

			} else {

   435

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

   436

				if (c == ASCII_NL) break;

   437

   438

				if (c == ASCII_SETX) str++;

   439

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

   440

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

   441

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

   442

			}

   443

		}

   444

   445

		num++;

   446

		str[-1] = '\0';

   447

	}

   448

}

   449

   450

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

   451

{

   452

	char buffer[512];

   453

	uint32 tmp;

   454

	int num, w, mt;

   455

	const char *src;

   456

	byte c;

   457

   458

	GetString(buffer, str);

   459

   460

	tmp = FormatStringLinebreaks(buffer, maxw);

   461

	num = GB(tmp, 0, 16);

   462

   463

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

   464

   465

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

   466

   467

	src = buffer;

   468

   469

	for (;;) {

   470

		w = GetStringWidth(src);

   471

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

   472

		_cur_fontsize = _last_fontsize;

   473

   474

		for (;;) {

   475

			c = *src++;

   476

			if (c == 0) {

   477

				y += mt;

   478

				if (--num < 0) {

   479

					_cur_fontsize = FS_NORMAL;

   480

					return;

   481

				}

   482

				break;

   483

			} else if (c == ASCII_SETX) {

   484

				src++;

   485

			} else if (c == ASCII_SETXY) {

   486

				src+=2;

   487

			}

   488

		}

   489

	}

   490

}

   491

   492

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

   493

{

   494

	char buffer[512];

   495

	uint32 tmp;

   496

	int num, mt;

   497

	const char *src;

   498

	byte c;

   499