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/* $Id$ */

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/** @file gfx.cpp Handling of drawing text and other gfx related stuff. */

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#include "stdafx.h"

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#include "openttd.h"

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#include "gfx_func.h"

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#include "spritecache.h"

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#include "variables.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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#include "zoom_func.h"

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#include "texteff.hpp"

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#include "blitter/factory.hpp"

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#include "video/video_driver.hpp"

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#include "strings_func.h"

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#include "core/math_func.hpp"

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#include "settings_type.h"

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#include "core/alloc_func.hpp"

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#include "core/sort_func.hpp"

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#include "landscape_type.h"

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    24

#include "table/palettes.h"

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#include "table/sprites.h"

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#include "table/control_codes.h"

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    28

byte _dirkeys;        ///< 1 = left, 2 = up, 4 = right, 8 = down

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bool _fullscreen;

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CursorVars _cursor;

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bool _ctrl_pressed;   ///< Is Ctrl pressed?

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bool _shift_pressed;  ///< Is Shift pressed?

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byte _fast_forward;

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bool _left_button_down;     ///< Is left mouse button pressed?

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bool _left_button_clicked;  ///< Is left mouse button clicked?

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bool _right_button_down;    ///< Is right mouse button pressed?

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bool _right_button_clicked; ///< Is right mouse button clicked?

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DrawPixelInfo _screen;

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bool _screen_disable_anim = false;   ///< Disable palette animation (important for 32bpp-anim blitter during giant screenshot)

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bool _exit_game;

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bool _networking;         ///< are we in networking mode?

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byte _game_mode;

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int8 _pause_game;

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int _pal_first_dirty;

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int _pal_count_dirty;

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    47

Colour _cur_palette[256];

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byte _stringwidth_table[FS_END][224];

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DrawPixelInfo *_cur_dpi;

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byte _colour_gradient[16][8];

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bool _use_dos_palette;

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    53

static void GfxMainBlitter(const Sprite *sprite, int x, int y, BlitterMode mode, const SubSprite *sub = NULL);

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    55

FontSize _cur_fontsize;

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static FontSize _last_fontsize;

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static uint8 _cursor_backup[64 * 64 * 4];

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    59

/**

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 * The rect for repaint.

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 *

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 * This rectangle defines the area which should be repaint by the video driver.

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 *

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 * @ingroup dirty

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 */

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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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enum {

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	DIRTY_BLOCK_HEIGHT   = 8,

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	DIRTY_BLOCK_WIDTH    = 64,

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};

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static uint _dirty_bytes_per_line = 0;

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static byte *_dirty_blocks = NULL;

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    77

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

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{

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	Blitter *blitter = BlitterFactoryBase::GetCurrentBlitter();

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    81

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

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	if (_cursor.visible) UndrawMouseCursor();

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	UndrawChatMessage();

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	blitter->ScrollBuffer(_screen.dst_ptr, left, top, width, height, xo, yo);

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	/* This part of the screen is now dirty. */

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

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}

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    92

/**

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 * Applies a certain FillRectMode-operation to a rectangle [left, right] x [top, bottom] on the screen.

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 *

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 * @pre dpi->zoom == ZOOM_LVL_NORMAL, right >= left, bottom >= top

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 * @param left Minimum X (inclusive)

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 * @param top Minimum Y (inclusive)

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 * @param right Maximum X (inclusive)

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 * @param bottom Maximum Y (inclusive)

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 * @param color A 8 bit palette index (FILLRECT_OPAQUE and FILLRECT_CHECKER) or a recolor spritenumber (FILLRECT_RECOLOR)

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 * @param mode

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 *         FILLRECT_OPAQUE:   Fill the rectangle with the specified color

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 *         FILLRECT_CHECKER:  Like FILLRECT_OPAQUE, but only draw every second pixel (used to grey out things)

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 *         FILLRECT_RECOLOR:  Apply a recolor sprite to every pixel in the rectangle currently on screen

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 */

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

   107

{

   108

	Blitter *blitter = BlitterFactoryBase::GetCurrentBlitter();

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	const DrawPixelInfo *dpi = _cur_dpi;

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	void *dst;

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	const int otop = top;

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	const int oleft = left;

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   114

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

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

   116

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

   117

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

   118

   119

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

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	right = right - dpi->left + 1;

   121

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

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	right -= left;

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	assert(right > 0);

   124

   125

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

   126

	bottom = bottom - dpi->top + 1;

   127

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

   128

	bottom -= top;

   129

	assert(bottom > 0);

   130

   131

	dst = blitter->MoveTo(dpi->dst_ptr, left, top);

   132

   133

	switch (mode) {

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		default: // FILLRECT_OPAQUE

   135

			blitter->DrawRect(dst, right, bottom, (uint8)color);

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			break;

   137

   138

		case FILLRECT_RECOLOR:

   139

			blitter->DrawColorMappingRect(dst, right, bottom, GB(color, 0, PALETTE_WIDTH));

   140

			break;

   141

   142

		case FILLRECT_CHECKER: {

   143

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

   144

			do {

   145

				for (int i = (bo ^= 1); i < right; i += 2) blitter->SetPixel(dst, i, 0, (uint8)color);

   146

				dst = blitter->MoveTo(dst, 0, 1);

   147

			} while (--bottom > 0);

   148

			break;

   149

		}

   150

	}

   151

}

   152

   153

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

   154

{

   155

	Blitter *blitter = BlitterFactoryBase::GetCurrentBlitter();

   156

	DrawPixelInfo *dpi = _cur_dpi;

   157

   158

	x -= dpi->left;

   159

	x2 -= dpi->left;

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	y -= dpi->top;

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	y2 -= dpi->top;

   162

   163

	/* Check clipping */

   164

	if (x < 0 && x2 < 0) return;

   165

	if (y < 0 && y2 < 0) return;

   166

	if (x > dpi->width  && x2 > dpi->width)  return;

   167

	if (y > dpi->height && y2 > dpi->height) return;

   168

   169

	blitter->DrawLine(dpi->dst_ptr, x, y, x2, y2, dpi->width, dpi->height, color);

   170

}

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   172

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

   173

{

   174

	Blitter *blitter = BlitterFactoryBase::GetCurrentBlitter();

   175

	DrawPixelInfo *dpi = _cur_dpi;

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   177

	x -= dpi->left;

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	x2 -= dpi->left;

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	y -= dpi->top;

   180

	y2 -= dpi->top;

   181

   182

	/* Check clipping */

   183

	if (x < 0 && x2 < 0) return;

   184

	if (y < 0 && y2 < 0) return;

   185

	if (x > dpi->width  && x2 > dpi->width)  return;

   186

	if (y > dpi->height && y2 > dpi->height) return;

   187

   188

	blitter->DrawLine(dpi->dst_ptr, UnScaleByZoom(x, dpi->zoom), UnScaleByZoom(y, dpi->zoom),

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			UnScaleByZoom(x2, dpi->zoom), UnScaleByZoom(y2, dpi->zoom),

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			UnScaleByZoom(dpi->width, dpi->zoom), UnScaleByZoom(dpi->height, dpi->zoom), color);

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}

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/**

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 * Draws the projection of a parallelepiped.

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 * This can be used to draw boxes in world coordinates.

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 *

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 * @param x   Screen X-coordinate of top front corner.

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 * @param y   Screen Y-coordinate of top front corner.

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 * @param dx1 Screen X-length of first edge.

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 * @param dy1 Screen Y-length of first edge.

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 * @param dx2 Screen X-length of second edge.

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 * @param dy2 Screen Y-length of second edge.

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 * @param dx3 Screen X-length of third edge.

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 * @param dy3 Screen Y-length of third edge.

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 */

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void DrawBox(int x, int y, int dx1, int dy1, int dx2, int dy2, int dx3, int dy3)

   207

{

   208

	/*           ....

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	 *         ..    ....

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	 *       ..          ....

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	 *     ..                ^

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	 *   <--__(dx1,dy1)    /(dx2,dy2)

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	 *   :    --__       /   :

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	 *   :        --__ /     :

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	 *   :            *(x,y) :

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	 *   :            |      :

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	 *   :            |     ..

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	 *    ....        |(dx3,dy3)

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	 *        ....    | ..

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	 *            ....V.

   221

	 */

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   223

	static const byte color = 255;

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   225

	GfxDrawLineUnscaled(x, y, x + dx1, y + dy1, color);

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	GfxDrawLineUnscaled(x, y, x + dx2, y + dy2, color);

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	GfxDrawLineUnscaled(x, y, x + dx3, y + dy3, color);

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   229

	GfxDrawLineUnscaled(x + dx1, y + dy1, x + dx1 + dx2, y + dy1 + dy2, color);

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	GfxDrawLineUnscaled(x + dx1, y + dy1, x + dx1 + dx3, y + dy1 + dy3, color);

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	GfxDrawLineUnscaled(x + dx2, y + dy2, x + dx2 + dx1, y + dy2 + dy1, color);

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	GfxDrawLineUnscaled(x + dx2, y + dy2, x + dx2 + dx3, y + dy2 + dy3, color);

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	GfxDrawLineUnscaled(x + dx3, y + dy3, x + dx3 + dx1, y + dy3 + dy1, color);

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	GfxDrawLineUnscaled(x + dx3, y + dy3, x + dx3 + dx2, y + dy3 + dy2, color);

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}

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   238

/** 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.

   240

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

   241

 * @param maxw maximum width in pixels of the string

   242

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

   243

static int TruncateString(char *str, int maxw)

   244

{

   245

	int w = 0;

   246

	FontSize size = _cur_fontsize;

   247

	int ddd, ddd_w;

   248

   249

	WChar c;

   250

	char *ddd_pos;

   251

   252

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

   253

   254

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

   255

		if (IsPrintable(c)) {

   256

			w += GetCharacterWidth(size, c);

   257

   258

			if (w >= maxw) {

   259

				/* string got too big... insert dotdotdot */

   260

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

   261

				ddd_pos[3] = '\0';

   262

				return ddd_w;

   263

			}

   264

		} else {

   265

			if (c == SCC_SETX) str++;

   266

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

   267

			else if (c == SCC_TINYFONT) {

   268

				size = FS_SMALL;

   269

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

   270

			} else if (c == SCC_BIGFONT) {

   271

				size = FS_LARGE;

   272

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

   273

			}

   274

		}

   275

   276

		/* Remember the last position where three dots fit. */

   277

		if (w + ddd < maxw) {

   278

			ddd_w = w + ddd;

   279

			ddd_pos = str;

   280

		}

   281

	}

   282

   283

	return w;

   284

}

   285

   286

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

   287

{

   288

	GetString(dest, src, last);

   289

	return TruncateString(dest, maxw);

   290

}

   291

   292

/* returns right coordinate */

   293

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

   294

{

   295

	char buffer[512];

   296

   297

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

   298

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

   299

}

   300

   301

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

   302

{

   303

	char buffer[512];

   304

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

   305

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

   306

}

   307

   308

   309

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

   310

{

   311

	char buffer[512];

   312

	int w;

   313

   314

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

   315

	w = GetStringBoundingBox(buffer).width;

   316

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

   317

   318

	return w;

   319

}

   320

   321

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

   322

{

   323

	char buffer[512];

   324

   325

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

   326

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

   327

}

   328

   329

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

   330

{

   331

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

   332

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

   333

}

   334

   335

   336

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

   337

{

   338

	char buffer[512];

   339

	int w;

   340

   341

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

   342

   343

	w = GetStringBoundingBox(buffer).width;

   344

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

   345

   346

	return w;

   347

}

   348

   349

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

   350

{

   351

	char buffer[512];

   352

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

   353

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

   354

}

   355

   356

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

   357

{

   358

	int w = GetStringBoundingBox(str).width;

   359

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

   360

	return w;

   361

}

   362

   363

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

   364

{

   365

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

   366

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

   367

}

   368

   369

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

   370

{

   371

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

   372

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

   373

}

   374

   375

/**

   376

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

   377

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

   378

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

   379

 * placeholders for the newlines.

   380

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

   381

 * line's maximum width.

   382

 *

   383

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

   384

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

   385

 * starting with index 0 is the real string end.

   386

 *

   387

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

   388

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

   389

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

   390

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

   391

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

   392

 */

   393

uint32 FormatStringLinebreaks(char *str, int maxw)

   394

{

   395

	FontSize size = _cur_fontsize;

   396

	int num = 0;

   397

   398

	assert(maxw > 0);

   399

   400

	for (;;) {

   401

		char *last_space = NULL;

   402

		int w = 0;

   403

   404

		for (;;) {

   405

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

   406

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

   407

			if (IsWhitespace(c)) last_space = str;

   408

   409

			if (IsPrintable(c)) {

   410

				w += GetCharacterWidth(size, c);

   411

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

   412

				 * do. We can do two things:

   413

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

   414

				 *    we will truncate the string and bail out.

   415

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

   416

				if (w > maxw) {

   417

					if (last_space == NULL) {

   418

						*Utf8PrevChar(str) = '\0';

   419

						return num + (size << 16);

   420

					}

   421

					str = last_space;

   422

					break;

   423

				}

   424

			} else {

   425

				switch (c) {

   426

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

   427

					case SCC_SETX:  str++; break;

   428

					case SCC_SETXY: str += 2; break;

   429

					case SCC_TINYFONT: size = FS_SMALL; break;

   430

					case SCC_BIGFONT:  size = FS_LARGE; break;

   431

					case '\n': goto end_of_inner_loop;

   432

				}

   433

			}

   434

		}

   435

end_of_inner_loop:

   436

		/* String didn't fit on line (or a '\n' was encountered), so 'dummy' terminate

   437

		 * and increase linecount. We use Utf8PrevChar() as also non 1 char long

   438

		 * whitespace seperators are supported */

   439

		num++;

   440

		char *s = Utf8PrevChar(str);

   441

		*s++ = '\0';

   442

   443

		/* In which case (see above) we will shift remainder to left and close the gap */

   444

		if (str - s >= 1) {

   445

			for (; str[-1] != '\0';) *s++ = *str++;

   446

		}

   447

	}

   448

}

   449

   450

/** Draw a given string with the centre around the given (x,y) coordinates

   451

 * @param x Centre the string around this pixel width

   452

 * @param y Centre the string around this pixel height

   453

 * @param str String to draw

   454

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

   455

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

   456

{

   457

	char buffer[512];

   458

	uint32 tmp;

   459

	int num, w, mt;

   460

	const char *src;

   461

	WChar c;

   462

   463

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

   464

   465

	tmp = FormatStringLinebreaks(buffer, maxw);

   466

	num = GB(tmp, 0, 16);

   467

   468

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

   469

   470

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

   471

   472

	src = buffer;

   473

   474

	for (;;) {

   475

		w = GetStringBoundingBox(src).width;

   476

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

   477

		_cur_fontsize = _last_fontsize;

   478

   479

		for (;;) {

   480

			c = Utf8Consume(&src);

   481

			if (c == 0) {

   482

				y += mt;

   483

				if (--num < 0) {

   484

					_cur_fontsize = FS_NORMAL;

   485

					return;

   486

				}