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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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/**

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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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	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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/**

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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)

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{

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

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

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	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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   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);

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   125

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

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	bottom = bottom - dpi->top + 1;

   127

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

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	bottom -= top;

   129

	assert(bottom > 0);

   130

   131

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

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   133

	switch (mode) {

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		default: // FILLRECT_OPAQUE

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			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));

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			break;

   141

   142

		case FILLRECT_CHECKER: {

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			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);

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

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			} while (--bottom > 0);

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			break;

   149

		}

   150

	}

   151

}

   152

   153

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

   154

{

   155

	Blitter *blitter = BlitterFactoryBase::GetCurrentBlitter();

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	DrawPixelInfo *dpi = _cur_dpi;

   157

   158

	x -= dpi->left;

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	x2 -= dpi->left;

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	y -= dpi->top;

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	y2 -= dpi->top;

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   163

	/* Check clipping */

   164

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

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

   166

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

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

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   169

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

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}

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   172

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

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{

   174

	Blitter *blitter = BlitterFactoryBase::GetCurrentBlitter();

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	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;

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	y2 -= dpi->top;

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   182

	/* Check clipping */

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

   184

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

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

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

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   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

{

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	/*           ....

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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.

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	 */

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	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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	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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/** 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 *str 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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{

   245

	int w = 0;

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	FontSize size = _cur_fontsize;

   247

	int ddd, ddd_w;

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   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 {

   272

				size = FS_SMALL;

   273

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

   274

			} else if (c == SCC_BIGFONT) {

   275

				size = FS_LARGE;

   276

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

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			}

   278

		}

   279

   280

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

   281

		if (w + ddd < maxw) {

   282

			ddd_w = w + ddd;

   283

			ddd_pos = str;

   284

		}

   285

	}

   286

   287

	return w;

   288

}

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   290

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

   291

{

   292

	GetString(dest, src, last);

   293

	return TruncateString(dest, maxw);

   294

}

   295

   296

/* returns right coordinate */

   297

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

   298

{

   299

	char buffer[512];

   300

   301

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

   302

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

   303

}

   304

   305

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

   306

{

   307

	char buffer[512];

   308

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

   309

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

   310

}

   311

   312

   313

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

   314

{

   315

	char buffer[512];

   316

	int w;

   317

   318

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

   319

	w = GetStringBoundingBox(buffer).width;

   320

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

   321

   322

	return w;

   323

}

   324

   325

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

   326

{

   327

	char buffer[512];

   328

   329

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

   330

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

   331

}

   332

   333

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

   334

{

   335

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

   336

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

   337

}

   338

   339

   340

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

   341

{

   342

	char buffer[512];

   343

	int w;

   344

   345

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

   346

   347

	w = GetStringBoundingBox(buffer).width;

   348

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

   349

   350

	return w;

   351

}

   352

   353

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

   354

{

   355

	char buffer[512];

   356

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

   357

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

   358

}

   359

   360

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

   361

{

   362

	int w = GetStringBoundingBox(str).width;

   363

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

   364

	return w;

   365

}

   366

   367

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

   368

{

   369

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

   370

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

   371

}

   372

   373

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

   374

{

   375

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

   376

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

   377

}

   378

   379

/**

   380

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

   381

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

   382

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

   383

 * placeholders for the newlines.

   384

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

   385

 * line's maximum width.

   386

 *

   387

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

   388

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

   389

 * starting with index 0 is the real string end.

   390

 *

   391

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

   392

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

   393

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

   394

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

   395

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

   396

 */

   397

uint32 FormatStringLinebreaks(char *str, int maxw)

   398

{

   399

	FontSize size = _cur_fontsize;

   400

	int num = 0;

   401

   402

	assert(maxw > 0);

   403

   404

	for (;;) {

   405

		char *last_space = NULL;

   406

		int w = 0;

   407

   408

		for (;;) {

   409

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

   410

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

   411

			if (IsWhitespace(c)) last_space = str;

   412

   413

			if (IsPrintable(c)) {

   414

				w += GetCharacterWidth(size, c);

   415

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

   416

				 * do. We can do two things:

   417

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

   418

				 *    we will truncate the string and bail out.

   419

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

   420

				if (w > maxw) {

   421

					if (last_space == NULL) {

   422

						*Utf8PrevChar(str) = '\0';

   423

						return num + (size << 16);

   424

					}

   425

					str = last_space;

   426

					break;

   427

				}

   428

			} else {

   429

				switch (c) {

   430

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

   431

					case SCC_SETX:  str++; break;

   432

					case SCC_SETXY: str += 2; break;

   433

					case SCC_TINYFONT: size = FS_SMALL; break;

   434

					case SCC_BIGFONT:  size = FS_LARGE; break;

   435

					case '\n': goto end_of_inner_loop;

   436

				}

   437

			}

   438

		}

   439

end_of_inner_loop:

   440

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

   441

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

   442

		 * whitespace seperators are supported */

   443

		num++;

   444

		char *s = Utf8PrevChar(str);

   445

		*s++ = '\0';

   446

   447

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

   448

		if (str - s >= 1) {

   449

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

   450

		}

   451

	}

   452

}

   453

   454

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

   455

 * @param x Centre the string around this pixel width

   456

 * @param y Centre the string around this pixel height

   457

 * @param str String to draw

   458

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

   459

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

   460

{

   461

	char buffer[512];

   462

	uint32 tmp;

   463

	int num, w, mt;

   464

	const char *src;

   465

	WChar c;

   466

   467

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

   468

   469

	tmp = FormatStringLinebreaks(buffer, maxw);

   470

	num = GB(tmp, 0, 16);

   471

   472

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

   473

   474

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

   475

   476

	src = buffer;

   477

   478

	for (;;) {

   479

		w = GetStringBoundingBox(src).width;

   480

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

   481

		_cur_fontsize = _last_fontsize;

   482

   483

		for (;;) {

   484

			c = Utf8Consume(&src);

   485

			if (c == 0) {

   486

				y += mt;