gfx.cpp

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00001 /* $Id: gfx.cpp 15637 2009-03-07 20:53:32Z truebrain $ */
00002 
00005 #include "stdafx.h"
00006 #include "openttd.h"
00007 #include "gfx_func.h"
00008 #include "variables.h"
00009 #include "spritecache.h"
00010 #include "fontcache.h"
00011 #include "genworld.h"
00012 #include "zoom_func.h"
00013 #include "blitter/factory.hpp"
00014 #include "video/video_driver.hpp"
00015 #include "strings_func.h"
00016 #include "settings_type.h"
00017 #include "core/alloc_func.hpp"
00018 #include "core/sort_func.hpp"
00019 #include "landscape_type.h"
00020 #include "network/network_func.h"
00021 
00022 #include "table/palettes.h"
00023 #include "table/sprites.h"
00024 #include "table/control_codes.h"
00025 
00026 byte _dirkeys;        
00027 bool _fullscreen;
00028 CursorVars _cursor;
00029 bool _ctrl_pressed;   
00030 bool _shift_pressed;  
00031 byte _fast_forward;
00032 bool _left_button_down;     
00033 bool _left_button_clicked;  
00034 bool _right_button_down;    
00035 bool _right_button_clicked; 
00036 DrawPixelInfo _screen;
00037 bool _screen_disable_anim = false;   
00038 bool _exit_game;
00039 GameMode _game_mode;
00040 SwitchMode _switch_mode;  
00041 int8 _pause_game;
00042 int _pal_first_dirty;
00043 int _pal_count_dirty;
00044 
00045 Colour _cur_palette[256];
00046 byte _stringwidth_table[FS_END][224]; 
00047 DrawPixelInfo *_cur_dpi;
00048 byte _colour_gradient[COLOUR_END][8];
00049 
00050 static void GfxMainBlitter(const Sprite *sprite, int x, int y, BlitterMode mode, const SubSprite *sub = NULL);
00051 static int ReallyDoDrawString(const char *string, int x, int y, TextColour colour, bool parse_string_also_when_clipped = false);
00052 
00053 FontSize _cur_fontsize;
00054 static FontSize _last_fontsize;
00055 static ReusableBuffer<uint8> _cursor_backup;
00056 
00064 static Rect _invalid_rect;
00065 static const byte *_colour_remap_ptr;
00066 static byte _string_colourremap[3];
00067 
00068 enum {
00069   DIRTY_BLOCK_HEIGHT   = 8,
00070   DIRTY_BLOCK_WIDTH    = 64,
00071 };
00072 static uint _dirty_bytes_per_line = 0;
00073 static byte *_dirty_blocks = NULL;
00074 
00075 void GfxScroll(int left, int top, int width, int height, int xo, int yo)
00076 {
00077   Blitter *blitter = BlitterFactoryBase::GetCurrentBlitter();
00078 
00079   if (xo == 0 && yo == 0) return;
00080 
00081   if (_cursor.visible) UndrawMouseCursor();
00082 
00083 #ifdef ENABLE_NETWORK
00084   NetworkUndrawChatMessage();
00085 #endif /* ENABLE_NETWORK */
00086 
00087   blitter->ScrollBuffer(_screen.dst_ptr, left, top, width, height, xo, yo);
00088   /* This part of the screen is now dirty. */
00089   _video_driver->MakeDirty(left, top, width, height);
00090 }
00091 
00092 
00107 void GfxFillRect(int left, int top, int right, int bottom, int colour, FillRectMode mode)
00108 {
00109   Blitter *blitter = BlitterFactoryBase::GetCurrentBlitter();
00110   const DrawPixelInfo *dpi = _cur_dpi;
00111   void *dst;
00112   const int otop = top;
00113   const int oleft = left;
00114 
00115   if (dpi->zoom != ZOOM_LVL_NORMAL) return;
00116   if (left > right || top > bottom) return;
00117   if (right < dpi->left || left >= dpi->left + dpi->width) return;
00118   if (bottom < dpi->top || top >= dpi->top + dpi->height) return;
00119 
00120   if ( (left -= dpi->left) < 0) left = 0;
00121   right = right - dpi->left + 1;
00122   if (right > dpi->width) right = dpi->width;
00123   right -= left;
00124   assert(right > 0);
00125 
00126   if ( (top -= dpi->top) < 0) top = 0;
00127   bottom = bottom - dpi->top + 1;
00128   if (bottom > dpi->height) bottom = dpi->height;
00129   bottom -= top;
00130   assert(bottom > 0);
00131 
00132   dst = blitter->MoveTo(dpi->dst_ptr, left, top);
00133 
00134   switch (mode) {
00135     default: // FILLRECT_OPAQUE
00136       blitter->DrawRect(dst, right, bottom, (uint8)colour);
00137       break;
00138 
00139     case FILLRECT_RECOLOUR:
00140       blitter->DrawColourMappingRect(dst, right, bottom, GB(colour, 0, PALETTE_WIDTH));
00141       break;
00142 
00143     case FILLRECT_CHECKER: {
00144       byte bo = (oleft - left + dpi->left + otop - top + dpi->top) & 1;
00145       do {
00146         for (int i = (bo ^= 1); i < right; i += 2) blitter->SetPixel(dst, i, 0, (uint8)colour);
00147         dst = blitter->MoveTo(dst, 0, 1);
00148       } while (--bottom > 0);
00149       break;
00150     }
00151   }
00152 }
00153 
00154 void GfxDrawLine(int x, int y, int x2, int y2, int colour)
00155 {
00156   Blitter *blitter = BlitterFactoryBase::GetCurrentBlitter();
00157   DrawPixelInfo *dpi = _cur_dpi;
00158 
00159   x -= dpi->left;
00160   x2 -= dpi->left;
00161   y -= dpi->top;
00162   y2 -= dpi->top;
00163 
00164   /* Check clipping */
00165   if (x < 0 && x2 < 0) return;
00166   if (y < 0 && y2 < 0) return;
00167   if (x > dpi->width  && x2 > dpi->width)  return;
00168   if (y > dpi->height && y2 > dpi->height) return;
00169 
00170   blitter->DrawLine(dpi->dst_ptr, x, y, x2, y2, dpi->width, dpi->height, colour);
00171 }
00172 
00173 void GfxDrawLineUnscaled(int x, int y, int x2, int y2, int colour)
00174 {
00175   Blitter *blitter = BlitterFactoryBase::GetCurrentBlitter();
00176   DrawPixelInfo *dpi = _cur_dpi;
00177 
00178   x -= dpi->left;
00179   x2 -= dpi->left;
00180   y -= dpi->top;
00181   y2 -= dpi->top;
00182 
00183   /* Check clipping */
00184   if (x < 0 && x2 < 0) return;
00185   if (y < 0 && y2 < 0) return;
00186   if (x > dpi->width  && x2 > dpi->width)  return;
00187   if (y > dpi->height && y2 > dpi->height) return;
00188 
00189   blitter->DrawLine(dpi->dst_ptr, UnScaleByZoom(x, dpi->zoom), UnScaleByZoom(y, dpi->zoom),
00190       UnScaleByZoom(x2, dpi->zoom), UnScaleByZoom(y2, dpi->zoom),
00191       UnScaleByZoom(dpi->width, dpi->zoom), UnScaleByZoom(dpi->height, dpi->zoom), colour);
00192 }
00193 
00207 void DrawBox(int x, int y, int dx1, int dy1, int dx2, int dy2, int dx3, int dy3)
00208 {
00209   /*           ....
00210    *         ..    ....
00211    *       ..          ....
00212    *     ..                ^
00213    *   <--__(dx1,dy1)    /(dx2,dy2)
00214    *   :    --__       /   :
00215    *   :        --__ /     :
00216    *   :            *(x,y) :
00217    *   :            |      :
00218    *   :            |     ..
00219    *    ....        |(dx3,dy3)
00220    *        ....    | ..
00221    *            ....V.
00222    */
00223 
00224   static const byte colour = 255;
00225 
00226   GfxDrawLineUnscaled(x, y, x + dx1, y + dy1, colour);
00227   GfxDrawLineUnscaled(x, y, x + dx2, y + dy2, colour);
00228   GfxDrawLineUnscaled(x, y, x + dx3, y + dy3, colour);
00229 
00230   GfxDrawLineUnscaled(x + dx1, y + dy1, x + dx1 + dx2, y + dy1 + dy2, colour);
00231   GfxDrawLineUnscaled(x + dx1, y + dy1, x + dx1 + dx3, y + dy1 + dy3, colour);
00232   GfxDrawLineUnscaled(x + dx2, y + dy2, x + dx2 + dx1, y + dy2 + dy1, colour);
00233   GfxDrawLineUnscaled(x + dx2, y + dy2, x + dx2 + dx3, y + dy2 + dy3, colour);
00234   GfxDrawLineUnscaled(x + dx3, y + dy3, x + dx3 + dx1, y + dy3 + dy1, colour);
00235   GfxDrawLineUnscaled(x + dx3, y + dy3, x + dx3 + dx2, y + dy3 + dy2, colour);
00236 }
00237 
00242 static void SetColourRemap(TextColour colour)
00243 {
00244   if (colour == TC_INVALID) return;
00245 
00246   if (colour & IS_PALETTE_COLOUR) {
00247     _string_colourremap[1] = colour & ~IS_PALETTE_COLOUR;
00248     _string_colourremap[2] = (_use_palette == PAL_DOS) ? 1 : 215;
00249   } else {
00250     _string_colourremap[1] = _string_colourmap[_use_palette][colour].text;
00251     _string_colourremap[2] = _string_colourmap[_use_palette][colour].shadow;
00252   }
00253   _colour_remap_ptr = _string_colourremap;
00254 }
00255 
00256 #if !defined(WITH_ICU)
00257 static void HandleBiDiAndArabicShapes(char *text, const char *lastof) {}
00258 #else
00259 #include <unicode/ubidi.h>
00260 #include <unicode/ushape.h>
00261 
00290 static void HandleBiDiAndArabicShapes(char *buffer, const char *lastof)
00291 {
00292   UChar input_output[DRAW_STRING_BUFFER];
00293   UChar intermediate[DRAW_STRING_BUFFER];
00294 
00295   char *t = buffer;
00296   size_t length = 0;
00297   while (*t != '\0' && length < lengthof(input_output) - 1) {
00298     WChar tmp;
00299     t += Utf8Decode(&tmp, t);
00300     input_output[length++] = tmp;
00301   }
00302   input_output[length] = 0;
00303 
00304   UErrorCode err = U_ZERO_ERROR;
00305   UBiDi *para = ubidi_openSized((int32_t)length, 0, &err);
00306   if (para == NULL) return;
00307 
00308   ubidi_setPara(para, input_output, (int32_t)length, _dynlang.text_dir == TD_RTL ? UBIDI_DEFAULT_RTL : UBIDI_DEFAULT_LTR, NULL, &err);
00309   ubidi_writeReordered(para, intermediate, (int32_t)length, 0, &err);
00310   length = u_shapeArabic(intermediate, (int32_t)length, input_output, lengthof(input_output), U_SHAPE_TEXT_DIRECTION_VISUAL_LTR | U_SHAPE_LETTERS_SHAPE, &err);
00311   ubidi_close(para);
00312 
00313   if (U_FAILURE(err)) return;
00314 
00315   t = buffer;
00316   for (size_t i = 0; i < length && t < (lastof - 4); i++) {
00317     t += Utf8Encode(t, input_output[i]);
00318   }
00319   *t = '\0';
00320 }
00321 #endif /* WITH_ICU */
00322 
00323 
00329 static int TruncateString(char *str, int maxw)
00330 {
00331   int w = 0;
00332   FontSize size = _cur_fontsize;
00333   int ddd, ddd_w;
00334 
00335   WChar c;
00336   char *ddd_pos;
00337 
00338   ddd_w = ddd = GetCharacterWidth(size, '.') * 3;
00339 
00340   for (ddd_pos = str; (c = Utf8Consume((const char **)&str)) != '\0'; ) {
00341     if (IsPrintable(c)) {
00342       w += GetCharacterWidth(size, c);
00343 
00344       if (w >= maxw) {
00345         /* string got too big... insert dotdotdot, but make sure we do not
00346          * print anything beyond the string termination character. */
00347         for (int i = 0; *ddd_pos != '\0' && i < 3; i++, ddd_pos++) *ddd_pos = '.';
00348         *ddd_pos = '\0';
00349         return ddd_w;
00350       }
00351     } else {
00352       if (c == SCC_SETX) {
00353         w = *str;
00354         str++;
00355       } else if (c == SCC_SETXY) {
00356         w = *str;
00357         str += 2;
00358       } else if (c == SCC_TINYFONT) {
00359         size = FS_SMALL;
00360         ddd = GetCharacterWidth(size, '.') * 3;
00361       } else if (c == SCC_BIGFONT) {
00362         size = FS_LARGE;
00363         ddd = GetCharacterWidth(size, '.') * 3;
00364       }
00365     }
00366 
00367     /* Remember the last position where three dots fit. */
00368     if (w + ddd < maxw) {
00369       ddd_w = w + ddd;
00370       ddd_pos = str;
00371     }
00372   }
00373 
00374   return w;
00375 }
00376 
00387 static inline int TruncateStringID(StringID src, char *dest, int maxw, const char *last)
00388 {
00389   GetString(dest, src, last);
00390   return TruncateString(dest, maxw);
00391 }
00392 
00403 int DrawString(int x, int y, StringID str, TextColour colour)
00404 {
00405   char buffer[DRAW_STRING_BUFFER];
00406 
00407   GetString(buffer, str, lastof(buffer));
00408   HandleBiDiAndArabicShapes(buffer, lastof(buffer));
00409   return ReallyDoDrawString(buffer, x, y, colour);
00410 }
00411 
00423 int DrawStringTruncated(int x, int y, StringID str, TextColour colour, uint maxw)
00424 {
00425   char buffer[DRAW_STRING_BUFFER];
00426   TruncateStringID(str, buffer, maxw, lastof(buffer));
00427   HandleBiDiAndArabicShapes(buffer, lastof(buffer));
00428   return ReallyDoDrawString(buffer, x, y, colour);
00429 }
00430 
00441 int DrawStringRightAligned(int x, int y, StringID str, TextColour colour)
00442 {
00443   char buffer[DRAW_STRING_BUFFER];
00444   int w;
00445 
00446   GetString(buffer, str, lastof(buffer));
00447   HandleBiDiAndArabicShapes(buffer, lastof(buffer));
00448 
00449   w = GetStringBoundingBox(buffer).width;
00450   ReallyDoDrawString(buffer, x - w, y, colour);
00451 
00452   return w;
00453 }
00454 
00464 void DrawStringRightAlignedTruncated(int x, int y, StringID str, TextColour colour, uint maxw)
00465 {
00466   char buffer[DRAW_STRING_BUFFER];
00467 
00468   TruncateStringID(str, buffer, maxw, lastof(buffer));
00469   HandleBiDiAndArabicShapes(buffer, lastof(buffer));
00470   ReallyDoDrawString(buffer, x - GetStringBoundingBox(buffer).width, y, colour);
00471 }
00472 
00481 void DrawStringRightAlignedUnderline(int x, int y, StringID str, TextColour colour)
00482 {
00483   int w = DrawStringRightAligned(x, y, str, colour);
00484   GfxFillRect(x - w, y + 10, x, y + 10, _string_colourremap[1]);
00485 }
00486 
00497 int DrawStringCentered(int x, int y, StringID str, TextColour colour)
00498 {
00499   char buffer[DRAW_STRING_BUFFER];
00500   int w;
00501 
00502   GetString(buffer, str, lastof(buffer));
00503   HandleBiDiAndArabicShapes(buffer, lastof(buffer));
00504 
00505   w = GetStringBoundingBox(buffer).width;
00506   ReallyDoDrawString(buffer, x - w / 2, y, colour);
00507 
00508   return w;
00509 }
00510 
00522 int DrawStringCenteredTruncated(int xl, int xr, int y, StringID str, TextColour colour)
00523 {
00524   char buffer[DRAW_STRING_BUFFER];
00525   TruncateStringID(str, buffer, xr - xl, lastof(buffer));
00526   HandleBiDiAndArabicShapes(buffer, lastof(buffer));
00527 
00528   int w = GetStringBoundingBox(buffer).width;
00529   return ReallyDoDrawString(buffer, (xl + xr - w) / 2, y, colour);
00530 }
00531 
00542 int DoDrawStringCentered(int x, int y, const char *str, TextColour colour)
00543 {
00544   char buffer[DRAW_STRING_BUFFER];
00545   strecpy(buffer, str, lastof(buffer));
00546   HandleBiDiAndArabicShapes(buffer, lastof(buffer));
00547 
00548   int w = GetStringBoundingBox(buffer).width;
00549   ReallyDoDrawString(buffer, x - w / 2, y, colour);
00550   return w;
00551 }
00552 
00561 void DrawStringCenterUnderline(int x, int y, StringID str, TextColour colour)
00562 {
00563   int w = DrawStringCentered(x, y, str, colour);
00564   GfxFillRect(x - (w >> 1), y + 10, x - (w >> 1) + w, y + 10, _string_colourremap[1]);
00565 }
00566 
00576 void DrawStringCenterUnderlineTruncated(int xl, int xr, int y, StringID str, TextColour colour)
00577 {
00578   int w = DrawStringCenteredTruncated(xl, xr, y, str, colour);
00579   GfxFillRect((xl + xr - w) / 2, y + 10, (xl + xr + w) / 2, y + 10, _string_colourremap[1]);
00580 }
00581 
00600 uint32 FormatStringLinebreaks(char *str, int maxw)
00601 {
00602   FontSize size = _cur_fontsize;
00603   int num = 0;
00604 
00605   assert(maxw > 0);
00606 
00607   for (;;) {
00608     char *last_space = NULL;
00609     int w = 0;
00610 
00611     for (;;) {
00612       WChar c = Utf8Consume((const char **)&str);
00613       /* whitespace is where we will insert the line-break */
00614       if (IsWhitespace(c)) last_space = str;
00615 
00616       if (IsPrintable(c)) {
00617         w += GetCharacterWidth(size, c);
00618         /* string is longer than maximum width so we need to decide what to
00619          * do. We can do two things:
00620          * 1. If no whitespace was found at all up until now (on this line) then
00621          *    we will truncate the string and bail out.
00622          * 2. In all other cases force a linebreak at the last seen whitespace */
00623         if (w > maxw) {
00624           if (last_space == NULL) {
00625             *Utf8PrevChar(str) = '\0';
00626             return num + (size << 16);
00627           }
00628           str = last_space;
00629           break;
00630         }
00631       } else {
00632         switch (c) {
00633           case '\0': return num + (size << 16); break;
00634           case SCC_SETX:  str++; break;
00635           case SCC_SETXY: str += 2; break;
00636           case SCC_TINYFONT: size = FS_SMALL; break;
00637           case SCC_BIGFONT:  size = FS_LARGE; break;
00638           case '\n': goto end_of_inner_loop;
00639         }
00640       }
00641     }
00642 end_of_inner_loop:
00643     /* String didn't fit on line (or a '\n' was encountered), so 'dummy' terminate
00644      * and increase linecount. We use Utf8PrevChar() as also non 1 char long
00645      * whitespace seperators are supported */
00646     num++;
00647     char *s = Utf8PrevChar(str);
00648     *s++ = '\0';
00649 
00650     /* In which case (see above) we will shift remainder to left and close the gap */
00651     if (str - s >= 1) {
00652       for (; str[-1] != '\0';) *s++ = *str++;
00653     }
00654   }
00655 }
00656 
00657 
00664 static int GetMultilineStringHeight(const char *src, int num)
00665 {
00666   int maxy = 0;
00667   int y = 0;
00668   int fh = GetCharacterHeight(_cur_fontsize);
00669 
00670   for (;;) {
00671     WChar c = Utf8Consume(&src);
00672 
00673     switch (c) {
00674       case 0:            y += fh; if (--num < 0) return maxy; break;
00675       case '\n':         y += fh;                             break;
00676       case SCC_SETX:     src++;                               break;
00677       case SCC_SETXY:    src++; y = (int)*src++;              break;
00678       case SCC_TINYFONT: fh = GetCharacterHeight(FS_SMALL);   break;
00679       case SCC_BIGFONT:  fh = GetCharacterHeight(FS_LARGE);   break;
00680       default:           maxy = max<int>(maxy, y + fh);       break;
00681     }
00682   }
00683 }
00684 
00685 
00691 int GetStringHeight(StringID str, int maxw)
00692 {
00693   char buffer[DRAW_STRING_BUFFER];
00694 
00695   GetString(buffer, str, lastof(buffer));
00696 
00697   uint32 tmp = FormatStringLinebreaks(buffer, maxw);
00698 
00699   return GetMultilineStringHeight(buffer, GB(tmp, 0, 16));
00700 }
00701 
00702 
00708 void DrawStringMultiCenter(int x, int y, StringID str, int maxw)
00709 {
00710   char buffer[DRAW_STRING_BUFFER];
00711   uint32 tmp;
00712   int num, mt;
00713   const char *src;
00714   WChar c;
00715 
00716   GetString(buffer, str, lastof(buffer));
00717 
00718   tmp = FormatStringLinebreaks(buffer, maxw);
00719   num = GB(tmp, 0, 16);
00720 
00721   mt = GetCharacterHeight((FontSize)GB(tmp, 16, 16));
00722 
00723   y -= (mt >> 1) * num;
00724 
00725   src = buffer;
00726 
00727   for (;;) {
00728     char buf2[DRAW_STRING_BUFFER];
00729     strecpy(buf2, src, lastof(buf2));
00730     HandleBiDiAndArabicShapes(buf2, lastof(buf2));
00731     int w = GetStringBoundingBox(buf2).width;
00732     ReallyDoDrawString(buf2, x - (w >> 1), y, TC_FROMSTRING, true);
00733     _cur_fontsize = _last_fontsize;
00734 
00735     for (;;) {
00736       c = Utf8Consume(&src);
00737       if (c == 0) {
00738         y += mt;
00739         if (--num < 0) {
00740           _cur_fontsize = FS_NORMAL;
00741           return;
00742         }
00743         break;
00744       } else if (c == SCC_SETX) {
00745         src++;
00746       } else if (c == SCC_SETXY) {
00747         src += 2;
00748       }
00749     }
00750   }
00751 }
00752 
00753 
00754 uint DrawStringMultiLine(int x, int y, StringID str, int maxw, int maxh)
00755 {
00756   char buffer[DRAW_STRING_BUFFER];
00757   uint32 tmp;
00758   int num, mt;
00759   uint total_height;
00760   const char *src;
00761   WChar c;
00762 
00763   GetString(buffer, str, lastof(buffer));
00764 
00765   tmp = FormatStringLinebreaks(buffer, maxw);
00766   num = GB(tmp, 0, 16);
00767 
00768   mt = GetCharacterHeight((FontSize)GB(tmp, 16, 16));
00769   total_height = (num + 1) * mt;
00770 
00771   if (maxh != -1 && (int)total_height > maxh) {
00772     /* Check there's room enough for at least one line. */
00773     if (maxh < mt) return 0;
00774 
00775     num = maxh / mt - 1;
00776     total_height = (num + 1) * mt;
00777   }
00778 
00779   src = buffer;
00780 
00781   for (;;) {
00782     char buf2[DRAW_STRING_BUFFER];
00783     strecpy(buf2, src, lastof(buf2));
00784     HandleBiDiAndArabicShapes(buf2, lastof(buf2));
00785     ReallyDoDrawString(buf2, x, y, TC_FROMSTRING, true);
00786     _cur_fontsize = _last_fontsize;
00787 
00788     for (;;) {
00789       c = Utf8Consume(&src);
00790       if (c == 0) {
00791         y += mt;
00792         if (--num < 0) {
00793           _cur_fontsize = FS_NORMAL;
00794           return total_height;
00795         }
00796         break;
00797       } else if (c == SCC_SETX) {
00798         src++;
00799       } else if (c == SCC_SETXY) {
00800         src += 2;
00801       }
00802     }
00803   }
00804 }
00805 
00813 Dimension GetStringBoundingBox(const char *str)
00814 {
00815   FontSize size = _cur_fontsize;
00816   Dimension br;
00817   int max_width;
00818   WChar c;
00819 
00820   br.width = br.height = max_width = 0;
00821   for (;;) {
00822     c = Utf8Consume(&str);
00823     if (c == 0) break;
00824     if (IsPrintable(c)) {
00825       br.width += GetCharacterWidth(size, c);
00826     } else {
00827       switch (c) {
00828         case SCC_SETX: br.width += (byte)*str++; break;
00829         case SCC_SETXY:
00830           br.width += (byte)*str++;
00831           br.height += (byte)*str++;
00832           break;
00833         case SCC_TINYFONT: size = FS_SMALL; break;
00834         case SCC_BIGFONT:  size = FS_LARGE; break;
00835         case '\n':
00836           br.height += GetCharacterHeight(size);
00837           if (br.width > max_width) max_width = br.width;
00838           br.width = 0;
00839           break;
00840       }
00841     }
00842   }
00843   br.height += GetCharacterHeight(size);
00844 
00845   br.width  = max(br.width, max_width);
00846   return br;
00847 }
00848 
00856 void DrawCharCentered(WChar c, int x, int y, TextColour colour)
00857 {
00858   SetColourRemap(colour);
00859   GfxMainBlitter(GetGlyph(FS_NORMAL, c), x - GetCharacterWidth(FS_NORMAL, c) / 2, y, BM_COLOUR_REMAP);
00860 }
00861 
00879 int DoDrawString(const char *string, int x, int y, TextColour colour, bool parse_string_also_when_clipped)
00880 {
00881   char buffer[DRAW_STRING_BUFFER];
00882   strecpy(buffer, string, lastof(buffer));
00883   HandleBiDiAndArabicShapes(buffer, lastof(buffer));
00884 
00885   return ReallyDoDrawString(buffer, x, y, colour, parse_string_also_when_clipped);
00886 }
00887 
00905 static int ReallyDoDrawString(const char *string, int x, int y, TextColour colour, bool parse_string_also_when_clipped)
00906 {
00907   DrawPixelInfo *dpi = _cur_dpi;
00908   FontSize size = _cur_fontsize;
00909   WChar c;
00910   int xo = x, yo = y;
00911 
00912   TextColour previous_colour = colour;
00913 
00914   if (!parse_string_also_when_clipped) {
00915     /* in "mode multiline", the available space have been verified. Not in regular one.
00916      * So if the string cannot be drawn, return the original start to say so.*/
00917     if (x >= dpi->left + dpi->width || y >= dpi->top + dpi->height) return x;
00918 
00919     if (colour != TC_INVALID) { // the invalid colour flag test should not  really occur.  But better be safe
00920 switch_colour:;
00921       SetColourRemap(colour);
00922     }
00923   }
00924 
00925 check_bounds:
00926   if (y + 19 <= dpi->top || dpi->top + dpi->height <= y) {
00927 skip_char:;
00928     for (;;) {
00929       c = Utf8Consume(&string);
00930       if (!IsPrintable(c)) goto skip_cont;
00931     }
00932   }
00933 
00934   for (;;) {
00935     c = Utf8Consume(&string);
00936 skip_cont:;
00937     if (c == 0) {
00938       _last_fontsize = size;
00939       return x;  // Nothing more to draw, get out. And here is the new x position
00940     }
00941     if (IsPrintable(c)) {
00942       if (x >= dpi->left + dpi->width) goto skip_char;
00943       if (x + 26 >= dpi->left) {
00944         GfxMainBlitter(GetGlyph(size, c), x, y, BM_COLOUR_REMAP);
00945       }
00946       x += GetCharacterWidth(size, c);
00947     } else if (c == '\n') { // newline = {}
00948       x = xo;  // We require a new line, so the x coordinate is reset
00949       y += GetCharacterHeight(size);
00950       goto check_bounds;
00951     } else if (c >= SCC_BLUE && c <= SCC_BLACK) { // change colour?
00952       previous_colour = colour;
00953       colour = (TextColour)(c - SCC_BLUE);
00954       goto switch_colour;
00955     } else if (c == SCC_PREVIOUS_COLOUR) { // revert to the previous colour
00956       Swap(colour, previous_colour);
00957       goto switch_colour;
00958     } else if (c == SCC_SETX) { // {SETX}
00959       x = xo + (byte)*string++;
00960     } else if (c == SCC_SETXY) {// {SETXY}
00961       x = xo + (byte)*string++;
00962       y = yo + (byte)*string++;
00963     } else if (c == SCC_TINYFONT) { // {TINYFONT}
00964       size = FS_SMALL;
00965     } else if (c == SCC_BIGFONT) { // {BIGFONT}
00966       size = FS_LARGE;
00967     } else {
00968       DEBUG(misc, 0, "[utf8] unknown string command character %d", c);
00969     }
00970   }
00971 }
00972 
00985 int DoDrawStringTruncated(const char *str, int x, int y, TextColour colour, uint maxw)
00986 {
00987   char buffer[DRAW_STRING_BUFFER];
00988   strecpy(buffer, str, lastof(buffer));
00989   TruncateString(buffer, maxw);
00990   return DoDrawString(buffer, x, y, colour);
00991 }
00992 
01001 void DrawSprite(SpriteID img, SpriteID pal, int x, int y, const SubSprite *sub)
01002 {
01003   if (HasBit(img, PALETTE_MODIFIER_TRANSPARENT)) {
01004     _colour_remap_ptr = GetNonSprite(GB(pal, 0, PALETTE_WIDTH), ST_RECOLOUR) + 1;
01005     GfxMainBlitter(GetSprite(GB(img, 0, SPRITE_WIDTH), ST_NORMAL), x, y, BM_TRANSPARENT, sub);
01006   } else if (pal != PAL_NONE) {
01007     _colour_remap_ptr = GetNonSprite(GB(pal, 0, PALETTE_WIDTH), ST_RECOLOUR) + 1;
01008     GfxMainBlitter(GetSprite(GB(img, 0, SPRITE_WIDTH), ST_NORMAL), x, y, BM_COLOUR_REMAP, sub);
01009   } else {
01010     GfxMainBlitter(GetSprite(GB(img, 0, SPRITE_WIDTH), ST_NORMAL), x, y, BM_NORMAL, sub);
01011   }
01012 }
01013 
01014 static void GfxMainBlitter(const Sprite *sprite, int x, int y, BlitterMode mode, const SubSprite *sub)
01015 {
01016   const DrawPixelInfo *dpi = _cur_dpi;
01017   Blitter::BlitterParams bp;
01018 
01019   /* Amount of pixels to clip from the source sprite */
01020   int clip_left   = (sub != NULL ? max(0,                   -sprite->x_offs + sub->left       ) : 0);
01021   int clip_top    = (sub != NULL ? max(0,                   -sprite->y_offs + sub->top        ) : 0);
01022   int clip_right  = (sub != NULL ? max(0, sprite->width  - (-sprite->x_offs + sub->right  + 1)) : 0);
01023   int clip_bottom = (sub != NULL ? max(0, sprite->height - (-sprite->y_offs + sub->bottom + 1)) : 0);
01024 
01025   if (clip_left + clip_right >= sprite->width) return;
01026   if (clip_top + clip_bottom >= sprite->height) return;
01027 
01028   /* Move to the correct offset */
01029   x += sprite->x_offs;
01030   y += sprite->y_offs;
01031 
01032   /* Copy the main data directly from the sprite */
01033   bp.sprite = sprite->data;
01034   bp.sprite_width = sprite->width;
01035   bp.sprite_height = sprite->height;
01036   bp.width = UnScaleByZoom(sprite->width - clip_left - clip_right, dpi->zoom);
01037   bp.height = UnScaleByZoom(sprite->height - clip_top - clip_bottom, dpi->zoom);
01038   bp.top = 0;
01039   bp.left = 0;
01040   bp.skip_left = UnScaleByZoomLower(clip_left, dpi->zoom);
01041   bp.skip_top = UnScaleByZoomLower(clip_top, dpi->zoom);
01042 
01043   x += ScaleByZoom(bp.skip_left, dpi->zoom);
01044   y += ScaleByZoom(bp.skip_top, dpi->zoom);
01045 
01046   bp.dst = dpi->dst_ptr;
01047   bp.pitch = dpi->pitch;
01048   bp.remap = _colour_remap_ptr;
01049 
01050   assert(sprite->width > 0);
01051   assert(sprite->height > 0);
01052 
01053   if (bp.width <= 0) return;
01054   if (bp.height <= 0) return;
01055 
01056   y -= dpi->top;
01057   /* Check for top overflow */
01058   if (y < 0) {
01059     bp.height -= -UnScaleByZoom(y, dpi->zoom);
01060     if (bp.height <= 0) return;
01061     bp.skip_top += -UnScaleByZoom(y, dpi->zoom);
01062     y = 0;
01063   } else {
01064     bp.top = UnScaleByZoom(y, dpi->zoom);
01065   }
01066 
01067   /* Check for bottom overflow */
01068   y += ScaleByZoom(bp.height, dpi->zoom) - dpi->height;
01069   if (y > 0) {
01070     bp.height -= UnScaleByZoom(y, dpi->zoom);
01071     if (bp.height <= 0) return;
01072   }
01073 
01074   x -= dpi->left;
01075   /* Check for left overflow */
01076   if (x < 0) {
01077     bp.width -= -UnScaleByZoom(x, dpi->zoom);
01078     if (bp.width <= 0) return;
01079     bp.skip_left += -UnScaleByZoom(x, dpi->zoom);
01080     x = 0;
01081   } else {
01082     bp.left = UnScaleByZoom(x, dpi->zoom);
01083   }
01084 
01085   /* Check for right overflow */
01086   x += ScaleByZoom(bp.width, dpi->zoom) - dpi->width;
01087   if (x > 0) {
01088     bp.width -= UnScaleByZoom(x, dpi->zoom);
01089     if (bp.width <= 0) return;
01090   }
01091 
01092   assert(bp.skip_left + bp.width <= UnScaleByZoom(sprite->width, dpi->zoom));
01093   assert(bp.skip_top + bp.height <= UnScaleByZoom(sprite->height, dpi->zoom));
01094 
01095   BlitterFactoryBase::GetCurrentBlitter()->Draw(&bp, mode, dpi->zoom);
01096 }
01097 
01098 void DoPaletteAnimations();
01099 
01100 void GfxInitPalettes()
01101 {
01102   memcpy(_cur_palette, _palettes[_use_palette], sizeof(_cur_palette));
01103 
01104   DoPaletteAnimations();
01105   _pal_first_dirty = 0;
01106   _pal_count_dirty = 256;
01107 }
01108 
01109 #define EXTR(p, q) (((uint16)(_palette_animation_counter * (p)) * (q)) >> 16)
01110 #define EXTR2(p, q) (((uint16)(~_palette_animation_counter * (p)) * (q)) >> 16)
01111 
01112 void DoPaletteAnimations()
01113 {
01114   Blitter *blitter = BlitterFactoryBase::GetCurrentBlitter();
01115   const Colour *s;
01116   const ExtraPaletteValues *ev = &_extra_palette_values;
01117   /* Amount of colours to be rotated.
01118    * A few more for the DOS palette, because the water colours are
01119    * 245-254 for DOS and 217-226 for Windows.  */
01120   const int colour_rotation_amount = (_use_palette == PAL_DOS) ? PALETTE_ANIM_SIZE_DOS : PALETTE_ANIM_SIZE_WIN;
01121   Colour old_val[PALETTE_ANIM_SIZE_DOS];
01122   const int oldval_size = colour_rotation_amount * sizeof(*old_val);
01123   const uint old_tc = _palette_animation_counter;
01124   uint i;
01125   uint j;
01126 
01127   if (blitter != NULL && blitter->UsePaletteAnimation() == Blitter::PALETTE_ANIMATION_NONE) {
01128     _palette_animation_counter = 0;
01129   }
01130 
01131   Colour *palette_pos = &_cur_palette[PALETTE_ANIM_SIZE_START];  // Points to where animations are taking place on the palette
01132   /* Makes a copy of the current anmation palette in old_val,
01133    * so the work on the current palette could be compared, see if there has been any changes */
01134   memcpy(old_val, palette_pos, oldval_size);
01135 
01136   /* Dark blue water */
01137   s = (_settings_game.game_creation.landscape == LT_TOYLAND) ? ev->dark_water_TOY : ev->dark_water;
01138   j = EXTR(320, 5);
01139   for (i = 0; i != 5; i++) {
01140     *palette_pos++ = s[j];
01141     j++;
01142     if (j == 5) j = 0;
01143   }
01144 
01145   /* Glittery water */
01146   s = (_settings_game.game_creation.landscape == LT_TOYLAND) ? ev->glitter_water_TOY : ev->glitter_water;
01147   j = EXTR(128, 15);
01148   for (i = 0; i != 5; i++) {
01149     *palette_pos++ = s[j];
01150     j += 3;
01151     if (j >= 15) j -= 15;
01152   }
01153 
01154   /* Fizzy Drink bubbles animation */
01155   s = ev->fizzy_drink;
01156   j = EXTR2(512, 5);
01157   for (i = 0; i != 5; i++) {
01158     *palette_pos++ = s[j];
01159     j++;
01160     if (j == 5) j = 0;
01161   }
01162 
01163   /* Oil refinery fire animation */
01164   s = ev->oil_ref;
01165   j = EXTR2(512, 7);
01166   for (i = 0; i != 7; i++) {
01167     *palette_pos++ = s[j];
01168     j++;
01169     if (j == 7) j = 0;
01170   }
01171 
01172   /* Radio tower blinking */
01173   {
01174     byte i = (_palette_animation_counter >> 1) & 0x7F;
01175     byte v;
01176 
01177     (v = 255, i < 0x3f) ||
01178     (v = 128, i < 0x4A || i >= 0x75) ||
01179     (v = 20);
01180     palette_pos->r = v;
01181     palette_pos->g = 0;
01182     palette_pos->b = 0;
01183     palette_pos++;
01184 
01185     i ^= 0x40;
01186     (v = 255, i < 0x3f) ||
01187     (v = 128, i < 0x4A || i >= 0x75) ||
01188     (v = 20);
01189     palette_pos->r = v;
01190     palette_pos->g = 0;
01191     palette_pos->b = 0;
01192     palette_pos++;
01193   }
01194 
01195   /* Handle lighthouse and stadium animation */
01196   s = ev->lighthouse;
01197   j = EXTR(256, 4);
01198   for (i = 0; i != 4; i++) {
01199     *palette_pos++ = s[j];
01200     j++;
01201     if (j == 4) j = 0;
01202   }
01203 
01204   /* Animate water for old DOS graphics */
01205   if (_use_palette == PAL_DOS) {
01206     /* Dark blue water DOS */
01207     s = (_settings_game.game_creation.landscape == LT_TOYLAND) ? ev->dark_water_TOY : ev->dark_water;
01208     j = EXTR(320, 5);
01209     for (i = 0; i != 5; i++) {
01210       *palette_pos++ = s[j];
01211       j++;
01212       if (j == 5) j = 0;
01213     }
01214 
01215     /* Glittery water DOS */
01216     s = (_settings_game.game_creation.landscape == LT_TOYLAND) ? ev->glitter_water_TOY : ev->glitter_water;
01217     j = EXTR(128, 15);
01218     for (i = 0; i != 5; i++) {
01219       *palette_pos++ = s[j];
01220       j += 3;
01221       if (j >= 15) j -= 15;
01222     }
01223   }
01224 
01225   if (blitter != NULL && blitter->UsePaletteAnimation() == Blitter::PALETTE_ANIMATION_NONE) {
01226     _palette_animation_counter = old_tc;
01227   } else {
01228     if (memcmp(old_val, &_cur_palette[PALETTE_ANIM_SIZE_START], oldval_size) != 0) {
01229       /* Did we changed anything on the palette? Seems so.  Mark it as dirty */
01230       _pal_first_dirty = PALETTE_ANIM_SIZE_START;
01231       _pal_count_dirty = colour_rotation_amount;
01232     }
01233   }
01234 }
01235 
01236 
01238 void LoadStringWidthTable()
01239 {
01240   uint i;
01241 
01242   /* Normal font */
01243   for (i = 0; i != 224; i++) {
01244     _stringwidth_table[FS_NORMAL][i] = GetGlyphWidth(FS_NORMAL, i + 32);
01245   }
01246 
01247   /* Small font */
01248   for (i = 0; i != 224; i++) {
01249     _stringwidth_table[FS_SMALL][i] = GetGlyphWidth(FS_SMALL, i + 32);
01250   }
01251 
01252   /* Large font */
01253   for (i = 0; i != 224; i++) {
01254     _stringwidth_table[FS_LARGE][i] = GetGlyphWidth(FS_LARGE, i + 32);
01255   }
01256 }
01257 
01264 byte GetCharacterWidth(FontSize size, WChar key)
01265 {
01266   /* Use _stringwidth_table cache if possible */
01267   if (key >= 32 && key < 256) return _stringwidth_table[size][key - 32];
01268 
01269   return GetGlyphWidth(size, key);
01270 }
01271 
01272 
01273 void ScreenSizeChanged()
01274 {
01275   _dirty_bytes_per_line = (_screen.width + DIRTY_BLOCK_WIDTH - 1) / DIRTY_BLOCK_WIDTH;
01276   _dirty_blocks = ReallocT<byte>(_dirty_blocks, _dirty_bytes_per_line * ((_screen.height + DIRTY_BLOCK_HEIGHT - 1) / DIRTY_BLOCK_HEIGHT));
01277 
01278   /* check the dirty rect */
01279   if (_invalid_rect.right >= _screen.width) _invalid_rect.right = _screen.width;
01280   if (_invalid_rect.bottom >= _screen.height) _invalid_rect.bottom = _screen.height;
01281 
01282   /* screen size changed and the old bitmap is invalid now, so we don't want to undraw it */
01283   _cursor.visible = false;
01284 }
01285 
01286 void UndrawMouseCursor()
01287 {
01288   if (_cursor.visible) {
01289     Blitter *blitter = BlitterFactoryBase::GetCurrentBlitter();
01290     _cursor.visible = false;
01291     blitter->CopyFromBuffer(blitter->MoveTo(_screen.dst_ptr, _cursor.draw_pos.x, _cursor.draw_pos.y), _cursor_backup.GetBuffer(), _cursor.draw_size.x, _cursor.draw_size.y);
01292     _video_driver->MakeDirty(_cursor.draw_pos.x, _cursor.draw_pos.y, _cursor.draw_size.x, _cursor.draw_size.y);
01293   }
01294 }
01295 
01296 void DrawMouseCursor()
01297 {
01298 #if defined(WINCE)
01299   /* Don't ever draw the mouse for WinCE, as we work with a stylus */
01300   return;
01301 #endif
01302 
01303   Blitter *blitter = BlitterFactoryBase::GetCurrentBlitter();
01304   int x;
01305   int y;
01306   int w;
01307   int h;
01308 
01309   /* Redraw mouse cursor but only when it's inside the window */
01310   if (!_cursor.in_window) return;
01311 
01312   /* Don't draw the mouse cursor if it's already drawn */
01313   if (_cursor.visible) {
01314     if (!_cursor.dirty) return;
01315     UndrawMouseCursor();
01316   }
01317 
01318   w = _cursor.size.x;
01319   x = _cursor.pos.x + _cursor.offs.x + _cursor.short_vehicle_offset;
01320   if (x < 0) {
01321     w += x;
01322     x = 0;
01323   }
01324   if (w > _screen.width - x) w = _screen.width - x;
01325   if (w <= 0) return;
01326   _cursor.draw_pos.x = x;
01327   _cursor.draw_size.x = w;
01328 
01329   h = _cursor.size.y;
01330   y = _cursor.pos.y + _cursor.offs.y;
01331   if (y < 0) {
01332     h += y;
01333     y = 0;
01334   }
01335   if (h > _screen.height - y) h = _screen.height - y;
01336   if (h <= 0) return;
01337   _cursor.draw_pos.y = y;
01338   _cursor.draw_size.y = h;
01339 
01340   uint8 *buffer = _cursor_backup.Allocate(blitter->BufferSize(w, h));
01341 
01342   /* Make backup of stuff below cursor */
01343   blitter->CopyToBuffer(blitter->MoveTo(_screen.dst_ptr, _cursor.draw_pos.x, _cursor.draw_pos.y), buffer, _cursor.draw_size.x, _cursor.draw_size.y);
01344 
01345   /* Draw cursor on screen */
01346   _cur_dpi = &_screen;
01347   DrawSprite(_cursor.sprite, _cursor.pal, _cursor.pos.x + _cursor.short_vehicle_offset, _cursor.pos.y);
01348 
01349   _video_driver->MakeDirty(_cursor.draw_pos.x, _cursor.draw_pos.y, _cursor.draw_size.x, _cursor.draw_size.y);
01350 
01351   _cursor.visible = true;
01352   _cursor.dirty = false;
01353 }
01354 
01355 void RedrawScreenRect(int left, int top, int right, int bottom)
01356 {
01357   assert(right <= _screen.width && bottom <= _screen.height);
01358   if (_cursor.visible) {
01359     if (right > _cursor.draw_pos.x &&
01360         left < _cursor.draw_pos.x + _cursor.draw_size.x &&
01361         bottom > _cursor.draw_pos.y &&
01362         top < _cursor.draw_pos.y + _cursor.draw_size.y) {
01363       UndrawMouseCursor();
01364     }
01365   }
01366 
01367 #ifdef ENABLE_NETWORK
01368   NetworkUndrawChatMessage();
01369 #endif /* ENABLE_NETWORK */
01370 
01371   DrawOverlappedWindowForAll(left, top, right, bottom);
01372 
01373   _video_driver->MakeDirty(left, top, right - left, bottom - top);
01374 }
01375 
01381 void DrawDirtyBlocks()
01382 {
01383   byte *b = _dirty_blocks;
01384   const int w = Align(_screen.width,  DIRTY_BLOCK_WIDTH);
01385   const int h = Align(_screen.height, DIRTY_BLOCK_HEIGHT);
01386   int x;
01387   int y;
01388 
01389   if (IsGeneratingWorld() && !IsGeneratingWorldReadyForPaint()) return;
01390 
01391   y = 0;
01392   do {
01393     x = 0;
01394     do {
01395       if (*b != 0) {
01396         int left;
01397         int top;
01398         int right = x + DIRTY_BLOCK_WIDTH;
01399         int bottom = y;
01400         byte *p = b;
01401         int h2;
01402 
01403         /* First try coalescing downwards */
01404         do {
01405           *p = 0;
01406           p += _dirty_bytes_per_line;
01407           bottom += DIRTY_BLOCK_HEIGHT;
01408         } while (bottom != h && *p != 0);
01409 
01410         /* Try coalescing to the right too. */
01411         h2 = (bottom - y) / DIRTY_BLOCK_HEIGHT;
01412         assert(h2 > 0);
01413         p = b;
01414 
01415         while (right != w) {
01416           byte *p2 = ++p;
01417           int h = h2;
01418           /* Check if a full line of dirty flags is set. */
01419           do {
01420             if (!*p2) goto no_more_coalesc;
01421             p2 += _dirty_bytes_per_line;
01422           } while (--h != 0);
01423 
01424           /* Wohoo, can combine it one step to the right!
01425            * Do that, and clear the bits. */
01426           right += DIRTY_BLOCK_WIDTH;
01427 
01428           h = h2;
01429           p2 = p;
01430           do {
01431             *p2 = 0;
01432             p2 += _dirty_bytes_per_line;
01433           } while (--h != 0);
01434         }
01435         no_more_coalesc:
01436 
01437         left = x;
01438         top = y;
01439 
01440         if (left   < _invalid_rect.left  ) left   = _invalid_rect.left;
01441         if (top    < _invalid_rect.top   ) top    = _invalid_rect.top;
01442         if (right  > _invalid_rect.right ) right  = _invalid_rect.right;
01443         if (bottom > _invalid_rect.bottom) bottom = _invalid_rect.bottom;
01444 
01445         if (left < right && top < bottom) {
01446           RedrawScreenRect(left, top, right, bottom);
01447         }
01448 
01449       }
01450     } while (b++, (x += DIRTY_BLOCK_WIDTH) != w);
01451   } while (b += -(w / DIRTY_BLOCK_WIDTH) + _dirty_bytes_per_line, (y += DIRTY_BLOCK_HEIGHT) != h);
01452 
01453   _invalid_rect.left = w;
01454   _invalid_rect.top = h;
01455   _invalid_rect.right = 0;
01456   _invalid_rect.bottom = 0;
01457 
01458   /* If we are generating a world, and waiting for a paint run, mark it here
01459    *  as done painting, so we can continue generating. */
01460   if (IsGeneratingWorld() && IsGeneratingWorldReadyForPaint()) {
01461     SetGeneratingWorldPaintStatus(false);
01462   }
01463 }
01464 
01480 void SetDirtyBlocks(int left, int top, int right, int bottom)
01481 {
01482   byte *b;
01483   int width;
01484   int height;
01485 
01486   if (left < 0) left = 0;
01487   if (top < 0) top = 0;
01488   if (right > _screen.width) right = _screen.width;
01489   if (bottom > _screen.height) bottom = _screen.height;
01490 
01491   if (left >= right || top >= bottom) return;
01492 
01493   if (left   < _invalid_rect.left  ) _invalid_rect.left   = left;
01494   if (top    < _invalid_rect.top   ) _invalid_rect.top    = top;
01495   if (right  > _invalid_rect.right ) _invalid_rect.right  = right;
01496   if (bottom > _invalid_rect.bottom) _invalid_rect.bottom = bottom;
01497 
01498   left /= DIRTY_BLOCK_WIDTH;
01499   top  /= DIRTY_BLOCK_HEIGHT;
01500 
01501   b = _dirty_blocks + top * _dirty_bytes_per_line + left;
01502 
01503   width  = ((right  - 1) / DIRTY_BLOCK_WIDTH)  - left + 1;
01504   height = ((bottom - 1) / DIRTY_BLOCK_HEIGHT) - top  + 1;
01505 
01506   assert(width > 0 && height > 0);
01507 
01508   do {
01509     int i = width;
01510 
01511     do b[--i] = 0xFF; while (i);
01512 
01513     b += _dirty_bytes_per_line;
01514   } while (--height != 0);
01515 }
01516 
01522 void MarkWholeScreenDirty()
01523 {
01524   SetDirtyBlocks(0, 0, _screen.width, _screen.height);
01525 }
01526 
01539 bool FillDrawPixelInfo(DrawPixelInfo *n, int left, int top, int width, int height)
01540 {
01541   Blitter *blitter = BlitterFactoryBase::GetCurrentBlitter();
01542   const DrawPixelInfo *o = _cur_dpi;
01543 
01544   n->zoom = ZOOM_LVL_NORMAL;
01545 
01546   assert(width > 0);
01547   assert(height > 0);
01548 
01549   if ((left -= o->left) < 0) {
01550     width += left;
01551     if (width <= 0) return false;
01552     n->left = -left;
01553     left = 0;
01554   } else {
01555     n->left = 0;
01556   }
01557 
01558   if (width > o->width - left) {
01559     width = o->width - left;
01560     if (width <= 0) return false;
01561   }
01562   n->width = width;
01563 
01564   if ((top -= o->top) < 0) {
01565     height += top;
01566     if (height <= 0) return false;
01567     n->top = -top;
01568     top = 0;
01569   } else {
01570     n->top = 0;
01571   }
01572 
01573   n->dst_ptr = blitter->MoveTo(o->dst_ptr, left, top);
01574   n->pitch = o->pitch;
01575 
01576   if (height > o->height - top) {
01577     height = o->height - top;
01578     if (height <= 0) return false;
01579   }
01580   n->height = height;
01581 
01582   return true;
01583 }
01584 
01585 static void SetCursorSprite(SpriteID cursor, SpriteID pal)
01586 {
01587   CursorVars *cv = &_cursor;
01588   const Sprite *p;
01589 
01590   if (cv->sprite == cursor) return;
01591 
01592   p = GetSprite(GB(cursor, 0, SPRITE_WIDTH), ST_NORMAL);
01593   cv->sprite = cursor;
01594   cv->pal    = pal;
01595   cv->size.y = p->height;
01596   cv->size.x = p->width;
01597   cv->offs.x = p->x_offs;
01598   cv->offs.y = p->y_offs;
01599 
01600   cv->dirty = true;
01601   cv->short_vehicle_offset = 0;
01602 }
01603 
01604 static void SwitchAnimatedCursor()
01605 {
01606   const AnimCursor *cur = _cursor.animate_cur;
01607 
01608   if (cur == NULL || cur->sprite == AnimCursor::LAST) cur = _cursor.animate_list;
01609 
01610   SetCursorSprite(cur->sprite, _cursor.pal);
01611 
01612   _cursor.animate_timeout = cur->display_time;
01613   _cursor.animate_cur     = cur + 1;
01614 }
01615 
01616 void CursorTick()
01617 {
01618   if (_cursor.animate_timeout != 0 && --_cursor.animate_timeout == 0)
01619     SwitchAnimatedCursor();
01620 }
01621 
01622 void SetMouseCursor(SpriteID sprite, SpriteID pal)
01623 {
01624   /* Turn off animation */
01625   _cursor.animate_timeout = 0;
01626   /* Set cursor */
01627   SetCursorSprite(sprite, pal);
01628 }
01629 
01630 void SetAnimatedMouseCursor(const AnimCursor *table)
01631 {
01632   _cursor.animate_list = table;
01633   _cursor.animate_cur = NULL;
01634   _cursor.pal = PAL_NONE;
01635   SwitchAnimatedCursor();
01636 }
01637 
01638 bool ChangeResInGame(int width, int height)
01639 {
01640   return (_screen.width == width && _screen.height == height) || _video_driver->ChangeResolution(width, height);
01641 }
01642 
01643 bool ToggleFullScreen(bool fs)
01644 {
01645   bool result = _video_driver->ToggleFullscreen(fs);
01646   if (_fullscreen != fs && _num_resolutions == 0) {
01647     DEBUG(driver, 0, "Could not find a suitable fullscreen resolution");
01648   }
01649   return result;
01650 }
01651 
01652 static int CDECL compare_res(const Dimension *pa, const Dimension *pb)
01653 {
01654   int x = pa->width - pb->width;
01655   if (x != 0) return x;
01656   return pa->height - pb->height;
01657 }
01658 
01659 void SortResolutions(int count)
01660 {
01661   QSortT(_resolutions, count, &compare_res);
01662 }

Generated on Sun Mar 15 22:49:46 2009 for openttd by  doxygen 1.5.6