gfx.cpp

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00001 /* $Id: gfx.cpp 19067 2010-02-09 18:37:19Z glx $ */
00002 
00003 /*
00004  * This file is part of OpenTTD.
00005  * OpenTTD is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2.
00006  * OpenTTD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
00007  * See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <http://www.gnu.org/licenses/>.
00008  */
00009 
00012 #include "stdafx.h"
00013 #include "gfx_func.h"
00014 #include "variables.h"
00015 #include "fontcache.h"
00016 #include "genworld.h"
00017 #include "zoom_func.h"
00018 #include "blitter/factory.hpp"
00019 #include "video/video_driver.hpp"
00020 #include "strings_func.h"
00021 #include "settings_type.h"
00022 #include "landscape_type.h"
00023 #include "network/network.h"
00024 #include "network/network_func.h"
00025 #include "thread/thread.h"
00026 #include "window_func.h"
00027 
00028 #include "table/palettes.h"
00029 #include "table/sprites.h"
00030 #include "table/control_codes.h"
00031 
00032 byte _dirkeys;        
00033 bool _fullscreen;
00034 CursorVars _cursor;
00035 bool _ctrl_pressed;   
00036 bool _shift_pressed;  
00037 byte _fast_forward;
00038 bool _left_button_down;     
00039 bool _left_button_clicked;  
00040 bool _right_button_down;    
00041 bool _right_button_clicked; 
00042 DrawPixelInfo _screen;
00043 bool _screen_disable_anim = false;   
00044 bool _exit_game;
00045 GameMode _game_mode;
00046 SwitchMode _switch_mode;  
00047 PauseModeByte _pause_mode;
00048 int _pal_first_dirty;
00049 int _pal_count_dirty;
00050 
00051 Colour _cur_palette[256];
00052 
00053 static int _max_char_height; 
00054 static int _max_char_width;  
00055 static byte _stringwidth_table[FS_END][224]; 
00056 DrawPixelInfo *_cur_dpi;
00057 byte _colour_gradient[COLOUR_END][8];
00058 
00059 static void GfxMainBlitter(const Sprite *sprite, int x, int y, BlitterMode mode, const SubSprite *sub = NULL);
00060 
00061 FontSize _cur_fontsize;
00062 static FontSize _last_fontsize;
00063 static ReusableBuffer<uint8> _cursor_backup;
00064 
00072 static Rect _invalid_rect;
00073 static const byte *_colour_remap_ptr;
00074 static byte _string_colourremap[3]; 
00075 
00076 enum {
00077   DIRTY_BLOCK_HEIGHT   = 8,
00078   DIRTY_BLOCK_WIDTH    = 64,
00079 };
00080 static uint _dirty_bytes_per_line = 0;
00081 static byte *_dirty_blocks = NULL;
00082 
00083 void GfxScroll(int left, int top, int width, int height, int xo, int yo)
00084 {
00085   Blitter *blitter = BlitterFactoryBase::GetCurrentBlitter();
00086 
00087   if (xo == 0 && yo == 0) return;
00088 
00089   if (_cursor.visible) UndrawMouseCursor();
00090 
00091 #ifdef ENABLE_NETWORK
00092   if (_networking) NetworkUndrawChatMessage();
00093 #endif /* ENABLE_NETWORK */
00094 
00095   blitter->ScrollBuffer(_screen.dst_ptr, left, top, width, height, xo, yo);
00096   /* This part of the screen is now dirty. */
00097   _video_driver->MakeDirty(left, top, width, height);
00098 }
00099 
00100 
00115 void GfxFillRect(int left, int top, int right, int bottom, int colour, FillRectMode mode)
00116 {
00117   Blitter *blitter = BlitterFactoryBase::GetCurrentBlitter();
00118   const DrawPixelInfo *dpi = _cur_dpi;
00119   void *dst;
00120   const int otop = top;
00121   const int oleft = left;
00122 
00123   if (dpi->zoom != ZOOM_LVL_NORMAL) return;
00124   if (left > right || top > bottom) return;
00125   if (right < dpi->left || left >= dpi->left + dpi->width) return;
00126   if (bottom < dpi->top || top >= dpi->top + dpi->height) return;
00127 
00128   if ( (left -= dpi->left) < 0) left = 0;
00129   right = right - dpi->left + 1;
00130   if (right > dpi->width) right = dpi->width;
00131   right -= left;
00132   assert(right > 0);
00133 
00134   if ( (top -= dpi->top) < 0) top = 0;
00135   bottom = bottom - dpi->top + 1;
00136   if (bottom > dpi->height) bottom = dpi->height;
00137   bottom -= top;
00138   assert(bottom > 0);
00139 
00140   dst = blitter->MoveTo(dpi->dst_ptr, left, top);
00141 
00142   switch (mode) {
00143     default: // FILLRECT_OPAQUE
00144       blitter->DrawRect(dst, right, bottom, (uint8)colour);
00145       break;
00146 
00147     case FILLRECT_RECOLOUR:
00148       blitter->DrawColourMappingRect(dst, right, bottom, GB(colour, 0, PALETTE_WIDTH));
00149       break;
00150 
00151     case FILLRECT_CHECKER: {
00152       byte bo = (oleft - left + dpi->left + otop - top + dpi->top) & 1;
00153       do {
00154         for (int i = (bo ^= 1); i < right; i += 2) blitter->SetPixel(dst, i, 0, (uint8)colour);
00155         dst = blitter->MoveTo(dst, 0, 1);
00156       } while (--bottom > 0);
00157       break;
00158     }
00159   }
00160 }
00161 
00162 void GfxDrawLine(int x, int y, int x2, int y2, int colour)
00163 {
00164   Blitter *blitter = BlitterFactoryBase::GetCurrentBlitter();
00165   DrawPixelInfo *dpi = _cur_dpi;
00166 
00167   x -= dpi->left;
00168   x2 -= dpi->left;
00169   y -= dpi->top;
00170   y2 -= dpi->top;
00171 
00172   /* Check clipping */
00173   if (x < 0 && x2 < 0) return;
00174   if (y < 0 && y2 < 0) return;
00175   if (x > dpi->width  && x2 > dpi->width)  return;
00176   if (y > dpi->height && y2 > dpi->height) return;
00177 
00178   blitter->DrawLine(dpi->dst_ptr, x, y, x2, y2, dpi->width, dpi->height, colour);
00179 }
00180 
00181 void GfxDrawLineUnscaled(int x, int y, int x2, int y2, int colour)
00182 {
00183   Blitter *blitter = BlitterFactoryBase::GetCurrentBlitter();
00184   DrawPixelInfo *dpi = _cur_dpi;
00185 
00186   x -= dpi->left;
00187   x2 -= dpi->left;
00188   y -= dpi->top;
00189   y2 -= dpi->top;
00190 
00191   /* Check clipping */
00192   if (x < 0 && x2 < 0) return;
00193   if (y < 0 && y2 < 0) return;
00194   if (x > dpi->width  && x2 > dpi->width)  return;
00195   if (y > dpi->height && y2 > dpi->height) return;
00196 
00197   blitter->DrawLine(dpi->dst_ptr, UnScaleByZoom(x, dpi->zoom), UnScaleByZoom(y, dpi->zoom),
00198       UnScaleByZoom(x2, dpi->zoom), UnScaleByZoom(y2, dpi->zoom),
00199       UnScaleByZoom(dpi->width, dpi->zoom), UnScaleByZoom(dpi->height, dpi->zoom), colour);
00200 }
00201 
00215 void DrawBox(int x, int y, int dx1, int dy1, int dx2, int dy2, int dx3, int dy3)
00216 {
00217   /*           ....
00218    *         ..    ....
00219    *       ..          ....
00220    *     ..                ^
00221    *   <--__(dx1,dy1)    /(dx2,dy2)
00222    *   :    --__       /   :
00223    *   :        --__ /     :
00224    *   :            *(x,y) :
00225    *   :            |      :
00226    *   :            |     ..
00227    *    ....        |(dx3,dy3)
00228    *        ....    | ..
00229    *            ....V.
00230    */
00231 
00232   static const byte colour = 255;
00233 
00234   GfxDrawLineUnscaled(x, y, x + dx1, y + dy1, colour);
00235   GfxDrawLineUnscaled(x, y, x + dx2, y + dy2, colour);
00236   GfxDrawLineUnscaled(x, y, x + dx3, y + dy3, colour);
00237 
00238   GfxDrawLineUnscaled(x + dx1, y + dy1, x + dx1 + dx2, y + dy1 + dy2, colour);
00239   GfxDrawLineUnscaled(x + dx1, y + dy1, x + dx1 + dx3, y + dy1 + dy3, colour);
00240   GfxDrawLineUnscaled(x + dx2, y + dy2, x + dx2 + dx1, y + dy2 + dy1, colour);
00241   GfxDrawLineUnscaled(x + dx2, y + dy2, x + dx2 + dx3, y + dy2 + dy3, colour);
00242   GfxDrawLineUnscaled(x + dx3, y + dy3, x + dx3 + dx1, y + dy3 + dy1, colour);
00243   GfxDrawLineUnscaled(x + dx3, y + dy3, x + dx3 + dx2, y + dy3 + dy2, colour);
00244 }
00245 
00250 static void SetColourRemap(TextColour colour)
00251 {
00252   if (colour == TC_INVALID) return;
00253 
00254   if (colour & IS_PALETTE_COLOUR) {
00255     _string_colourremap[1] = colour & ~IS_PALETTE_COLOUR;
00256     _string_colourremap[2] = (_use_palette == PAL_DOS) ? 1 : 215;
00257   } else {
00258     _string_colourremap[1] = _string_colourmap[_use_palette][colour].text;
00259     _string_colourremap[2] = _string_colourmap[_use_palette][colour].shadow;
00260   }
00261   _colour_remap_ptr = _string_colourremap;
00262 }
00263 
00264 #if !defined(WITH_ICU)
00265 typedef WChar UChar;
00266 static UChar *HandleBiDiAndArabicShapes(UChar *text) { return text; }
00267 #else
00268 #include <unicode/ubidi.h>
00269 #include <unicode/ushape.h>
00270 
00300 static UChar *HandleBiDiAndArabicShapes(UChar *buffer)
00301 {
00302   static UChar input_output[DRAW_STRING_BUFFER];
00303   UChar intermediate[DRAW_STRING_BUFFER];
00304 
00305   UChar *t = buffer;
00306   size_t length = 0;
00307   while (*t != '\0' && length < lengthof(input_output) - 1) {
00308     input_output[length++] = *t++;
00309   }
00310   input_output[length] = 0;
00311 
00312   UErrorCode err = U_ZERO_ERROR;
00313   UBiDi *para = ubidi_openSized((int32_t)length, 0, &err);
00314   if (para == NULL) return buffer;
00315 
00316   ubidi_setPara(para, input_output, (int32_t)length, _dynlang.text_dir == TD_RTL ? UBIDI_DEFAULT_RTL : UBIDI_DEFAULT_LTR, NULL, &err);
00317   ubidi_writeReordered(para, intermediate, (int32_t)length, UBIDI_REMOVE_BIDI_CONTROLS, &err);
00318   length = u_shapeArabic(intermediate, (int32_t)length, input_output, lengthof(input_output), U_SHAPE_TEXT_DIRECTION_VISUAL_LTR | U_SHAPE_LETTERS_SHAPE, &err);
00319   ubidi_close(para);
00320 
00321   if (U_FAILURE(err)) return buffer;
00322 
00323   input_output[length] = '\0';
00324   return input_output;
00325 }
00326 #endif /* WITH_ICU */
00327 
00328 
00336 static int TruncateString(char *str, int maxw, bool ignore_setxy)
00337 {
00338   int w = 0;
00339   FontSize size = _cur_fontsize;
00340   int ddd, ddd_w;
00341 
00342   WChar c;
00343   char *ddd_pos;
00344 
00345   ddd_w = ddd = GetCharacterWidth(size, '.') * 3;
00346 
00347   for (ddd_pos = str; (c = Utf8Consume(const_cast<const char **>(&str))) != '\0'; ) {
00348     if (IsPrintable(c)) {
00349       w += GetCharacterWidth(size, c);
00350 
00351       if (w > maxw) {
00352         /* string got too big... insert dotdotdot, but make sure we do not
00353          * print anything beyond the string termination character. */
00354         for (int i = 0; *ddd_pos != '\0' && i < 3; i++, ddd_pos++) *ddd_pos = '.';
00355         *ddd_pos = '\0';
00356         return ddd_w;
00357       }
00358     } else {
00359       if (c == SCC_SETX) {
00360         if (!ignore_setxy) w = *str;
00361         str++;
00362       } else if (c == SCC_SETXY) {
00363         if (!ignore_setxy) w = *str;
00364         str += 2;
00365       } else if (c == SCC_TINYFONT) {
00366         size = FS_SMALL;
00367         ddd = GetCharacterWidth(size, '.') * 3;
00368       } else if (c == SCC_BIGFONT) {
00369         size = FS_LARGE;
00370         ddd = GetCharacterWidth(size, '.') * 3;
00371       } else if (c == '\n') {
00372         DEBUG(misc, 0, "Drawing string using newlines with DrawString instead of DrawStringMultiLine. Please notify the developers of this: [%s]", str);
00373       }
00374     }
00375 
00376     /* Remember the last position where three dots fit. */
00377     if (w + ddd < maxw) {
00378       ddd_w = w + ddd;
00379       ddd_pos = str;
00380     }
00381   }
00382 
00383   return w;
00384 }
00385 
00386 static int ReallyDoDrawString(const UChar *string, int x, int y, TextColour &colour, bool parse_string_also_when_clipped = false);
00387 
00393 static int GetStringWidth(const UChar *str)
00394 {
00395   FontSize size = _cur_fontsize;
00396   int max_width;
00397   int width;
00398   WChar c;
00399 
00400   width = max_width = 0;
00401   for (;;) {
00402     c = *str++;
00403     if (c == 0) break;
00404     if (IsPrintable(c)) {
00405       width += GetCharacterWidth(size, c);
00406     } else {
00407       switch (c) {
00408         case SCC_SETX:
00409         case SCC_SETXY:
00410           /* At this point there is no SCC_SETX(Y) anymore */
00411           NOT_REACHED();
00412           break;
00413         case SCC_TINYFONT: size = FS_SMALL; break;
00414         case SCC_BIGFONT:  size = FS_LARGE; break;
00415         case '\n':
00416           max_width = max(max_width, width);
00417           break;
00418       }
00419     }
00420   }
00421 
00422   return max(max_width, width);
00423 }
00424 
00443 static int DrawString(int left, int right, int top, char *str, const char *last, TextColour colour, StringAlignment align, bool underline = false, bool truncate = true)
00444 {
00445   /* We need the outer limits of both left/right */
00446   int min_left = INT32_MAX;
00447   int max_right = INT32_MIN;
00448 
00449   int initial_left = left;
00450   int initial_right = right;
00451   int initial_top = top;
00452 
00453   if (truncate) TruncateString(str, right - left + 1, (align & SA_STRIP) == SA_STRIP);
00454 
00455   /*
00456    * To support SETX and SETXY properly with RTL languages we have to
00457    * calculate the offsets from the right. To do this we need to split
00458    * the string and draw the parts separated by SETX(Y).
00459    * So here we split
00460    */
00461   static SmallVector<UChar *, 4> setx_offsets;
00462   setx_offsets.Clear();
00463 
00464   UChar draw_buffer[DRAW_STRING_BUFFER];
00465   UChar *p = draw_buffer;
00466 
00467   *setx_offsets.Append() = p;
00468 
00469   char *loc = str;
00470   for (;;) {
00471     WChar c;
00472     /* We cannot use Utf8Consume as we need the location of the SETX(Y) */
00473     size_t len = Utf8Decode(&c, loc);
00474     *p++ = c;
00475 
00476     if (c == '\0') break;
00477     if (p >= lastof(draw_buffer) - 3) {
00478       /* Make sure we never overflow (even if copying SCC_SETX(Y)). */
00479       *p = '\0';
00480       break;
00481     }
00482     if (c != SCC_SETX && c != SCC_SETXY) {
00483       loc += len;
00484       continue;
00485     }
00486 
00487     if (align & SA_STRIP) {
00488       /* We do not want to keep the SETX(Y)!. It was already copied, so
00489        * remove it and undo the incrementing of the pointer! */
00490       *p-- = '\0';
00491       loc += len + (c == SCC_SETXY ? 2 : 1);
00492       continue;
00493     }
00494 
00495     if ((align & SA_MASK) != SA_LEFT) {
00496       DEBUG(grf, 1, "Using SETX and/or SETXY when not aligned to the left. Fixing alignment...");
00497 
00498       /* For left alignment and change the left so it will roughly be in the
00499        * middle. This will never cause the string to be completely centered,
00500        * but once SETX is used you cannot be sure the actual content of the
00501        * string is centered, so it doesn't really matter. */
00502       align = SA_LEFT | SA_FORCE;
00503       initial_left = left = max(left, (left + right - (int)GetStringBoundingBox(str).width) / 2);
00504     }
00505 
00506     /* We add the begin of the string, but don't add it twice */
00507     if (p != draw_buffer) {
00508       *setx_offsets.Append() = p;
00509       p[-1] = '\0';
00510       *p++ = c;
00511     }
00512 
00513     /* Skip the SCC_SETX(Y) ... */
00514     loc += len;
00515     /* ... copy the x coordinate ... */
00516     *p++ = *loc++;
00517     /* ... and finally copy the y coordinate if it exists */
00518     if (c == SCC_SETXY) *p++ = *loc++;
00519   }
00520 
00521   /* In case we have a RTL language we swap the alignment. */
00522   if (!(align & SA_FORCE) && _dynlang.text_dir == TD_RTL && align != SA_CENTER) align ^= SA_RIGHT;
00523 
00524   for (UChar **iter = setx_offsets.Begin(); iter != setx_offsets.End(); iter++) {
00525     UChar *to_draw = *iter;
00526     int offset = 0;
00527 
00528     /* Skip the SETX(Y) and set the appropriate offsets. */
00529     if (*to_draw == SCC_SETX || *to_draw == SCC_SETXY) {
00530       to_draw++;
00531       offset = *to_draw++;
00532       if (*to_draw == SCC_SETXY) top = initial_top + *to_draw++;
00533 
00534       _cur_fontsize = _last_fontsize;
00535     }
00536 
00537     to_draw = HandleBiDiAndArabicShapes(to_draw);
00538     int w = GetStringWidth(to_draw);
00539 
00540     /* right is the right most position to draw on. In this case we want to do
00541      * calculations with the width of the string. In comparison right can be
00542      * seen as lastof(todraw) and width as lengthof(todraw). They differ by 1.
00543      * So most +1/-1 additions are to move from lengthof to 'indices'.
00544      */
00545     switch (align & SA_MASK) {
00546       case SA_LEFT:
00547         /* right + 1 = left + w */
00548         left = initial_left + offset;
00549         right = left + w - 1;
00550         break;
00551 
00552       case SA_CENTER:
00553         /* The second + 1 is to round to the closest number */
00554         left  = (initial_right + 1 + initial_left - w + 1) / 2;
00555         /* right + 1 = left + w */
00556         right = left + w - 1;
00557         break;
00558 
00559       case SA_RIGHT:
00560         left = initial_right + 1 - w - offset;
00561         break;
00562 
00563       default:
00564         NOT_REACHED();
00565     }
00566 
00567     min_left  = min(left, min_left);
00568     max_right = max(right, max_right);
00569 
00570     ReallyDoDrawString(to_draw, left, top, colour, !truncate);
00571     if (underline) {
00572       GfxFillRect(left, top + FONT_HEIGHT_NORMAL, right, top + FONT_HEIGHT_NORMAL, _string_colourremap[1]);
00573     }
00574   }
00575 
00576   _cur_fontsize = FS_NORMAL;
00577 
00578   return align == SA_RIGHT ? min_left : max_right;
00579 }
00580 
00594 int DrawString(int left, int right, int top, const char *str, TextColour colour, StringAlignment align, bool underline)
00595 {
00596   char buffer[DRAW_STRING_BUFFER];
00597   strecpy(buffer, str, lastof(buffer));
00598   return DrawString(left, right, top, buffer, lastof(buffer), colour, align, underline);
00599 }
00600 
00614 int DrawString(int left, int right, int top, StringID str, TextColour colour, StringAlignment align, bool underline)
00615 {
00616   char buffer[DRAW_STRING_BUFFER];
00617   GetString(buffer, str, lastof(buffer));
00618   return DrawString(left, right, top, buffer, lastof(buffer), colour, align, underline);
00619 }
00620 
00640 uint32 FormatStringLinebreaks(char *str, const char *last, int maxw)
00641 {
00642   FontSize size = _cur_fontsize;
00643   int num = 0;
00644 
00645   assert(maxw > 0);
00646 
00647   for (;;) {
00648     /* The character *after* the last space. */
00649     char *last_space = NULL;
00650     int w = 0;
00651 
00652     for (;;) {
00653       WChar c = Utf8Consume(const_cast<const char **>(&str));
00654       /* whitespace is where we will insert the line-break */
00655       if (IsWhitespace(c)) last_space = str;
00656 
00657       if (IsPrintable(c)) {
00658         int char_w = GetCharacterWidth(size, c);
00659         w += char_w;
00660         if (w > maxw) {
00661           /* The string is longer than maximum width so we need to decide
00662            * what to do with it. */
00663           if (w == char_w) {
00664             /* The character is wider than allowed width; don't know
00665              * what to do with this case... bail out! */
00666             return num + (size << 16);
00667           }
00668           if (last_space == NULL) {
00669             /* No space has been found. Just terminate at our current
00670              * location. This usually happens for languages that do not
00671              * require spaces in strings, like Chinese, Japanese and
00672              * Korean. For other languages terminating mid-word might
00673              * not be the best, but terminating the whole string instead
00674              * of continuing the word at the next line is worse. */
00675             str = Utf8PrevChar(str);
00676             size_t len = strlen(str);
00677             char *terminator = str + len;
00678 
00679             /* The string location + length of the string + 1 for '\0'
00680              * always fits; otherwise there's no trailing '\0' and it
00681              * it not a valid string. */
00682             assert(terminator <= last);
00683             assert(*terminator == '\0');
00684 
00685             /* If the string is too long we have to terminate it earlier. */
00686             if (terminator == last) {
00687               /* Get the 'begin' of the previous character and make that
00688                * the terminator of the string; we truncate it 'early'. */
00689               *Utf8PrevChar(terminator) = '\0';
00690               len = strlen(str);
00691             }
00692             /* Also move the terminator! */
00693             memmove(str + 1, str, len + 1);
00694             *str = '\0';
00695             /* str needs to point to the character *after* the last space */
00696             str++;
00697           } else {
00698             /* A space is found; perfect place to terminate */
00699             str = last_space;
00700           }
00701           break;
00702         }
00703       } else {
00704         switch (c) {
00705           case '\0': return num + (size << 16);
00706           case SCC_SETX:  str++; break;
00707           case SCC_SETXY: str += 2; break;
00708           case SCC_TINYFONT: size = FS_SMALL; break;
00709           case SCC_BIGFONT:  size = FS_LARGE; break;
00710           case '\n': goto end_of_inner_loop;
00711         }
00712       }
00713     }
00714 end_of_inner_loop:
00715     /* String didn't fit on line (or a '\n' was encountered), so 'dummy' terminate
00716      * and increase linecount. We use Utf8PrevChar() as also non 1 char long
00717      * whitespace seperators are supported */
00718     num++;
00719     char *s = Utf8PrevChar(str);
00720     *s++ = '\0';
00721 
00722     /* In which case (see above) we will shift remainder to left and close the gap */
00723     if (str - s >= 1) {
00724       for (; str[-1] != '\0';) *s++ = *str++;
00725     }
00726   }
00727 }
00728 
00729 
00736 static int GetMultilineStringHeight(const char *src, int num)
00737 {
00738   int maxy = 0;
00739   int y = 0;
00740   int fh = GetCharacterHeight(_cur_fontsize);
00741 
00742   for (;;) {
00743     WChar c = Utf8Consume(&src);
00744 
00745     switch (c) {
00746       case 0:            y += fh; if (--num < 0) return maxy; break;
00747       case '\n':         y += fh;                             break;
00748       case SCC_SETX:     src++;                               break;
00749       case SCC_SETXY:    src++; y = (int)*src++;              break;
00750       case SCC_TINYFONT: fh = GetCharacterHeight(FS_SMALL);   break;
00751       case SCC_BIGFONT:  fh = GetCharacterHeight(FS_LARGE);   break;
00752       default:           maxy = max<int>(maxy, y + fh);       break;
00753     }
00754   }
00755 }
00756 
00757 
00763 int GetStringHeight(StringID str, int maxw)
00764 {
00765   char buffer[DRAW_STRING_BUFFER];
00766 
00767   GetString(buffer, str, lastof(buffer));
00768 
00769   uint32 tmp = FormatStringLinebreaks(buffer, lastof(buffer), maxw);
00770 
00771   return GetMultilineStringHeight(buffer, GB(tmp, 0, 16));
00772 }
00773 
00779 Dimension GetStringMultiLineBoundingBox(StringID str, const Dimension &suggestion)
00780 {
00781   Dimension box = {suggestion.width, GetStringHeight(str, suggestion.width)};
00782   return box;
00783 }
00784 
00801 int DrawStringMultiLine(int left, int right, int top, int bottom, StringID str, TextColour colour, StringAlignment align, bool underline)
00802 {
00803   int maxw = right - left + 1;
00804   int maxh = bottom - top + 1;
00805 
00806   /* It makes no sense to even try if it can't be drawn anyway, or
00807    * do we really want to support fonts of 0 or less pixels high? */
00808   if (maxh <= 0) return top;
00809 
00810   char buffer[DRAW_STRING_BUFFER];
00811   GetString(buffer, str, lastof(buffer));
00812 
00813   uint32 tmp = FormatStringLinebreaks(buffer, lastof(buffer), maxw);
00814   int num = GB(tmp, 0, 16);
00815 
00816   int mt = GetCharacterHeight((FontSize)GB(tmp, 16, 16));
00817   int total_height = (num + 1) * mt;
00818 
00819   if (total_height > maxh) {
00820     /* Check there's room enough for at least one line. */
00821     if (maxh < mt) return top;
00822 
00823     num = maxh / mt - 1;
00824     total_height = (num + 1) * mt;
00825   }
00826 
00827   int y = (align == SA_CENTER) ? (bottom + top - total_height + 1) / 2 : top;
00828   const char *src = buffer;
00829 
00830   for (;;) {
00831     char buf2[DRAW_STRING_BUFFER];
00832     strecpy(buf2, src, lastof(buf2));
00833     DrawString(left, right, y, buf2, lastof(buf2), colour, align, underline, false);
00834     _cur_fontsize = _last_fontsize;
00835 
00836     for (;;) {
00837       WChar c = Utf8Consume(&src);
00838       if (c == 0) {
00839         y += mt;
00840         if (--num < 0) {
00841           _cur_fontsize = FS_NORMAL;
00842           return y;
00843         }
00844         break;
00845       } else if (c == SCC_SETX) {
00846         src++;
00847       } else if (c == SCC_SETXY) {
00848         src += 2;
00849       }
00850     }
00851   }
00852 }
00853 
00861 Dimension GetStringBoundingBox(const char *str)
00862 {
00863   FontSize size = _cur_fontsize;
00864   Dimension br;
00865   uint max_width;
00866   WChar c;
00867 
00868   br.width = br.height = max_width = 0;
00869   for (;;) {
00870     c = Utf8Consume(&str);
00871     if (c == 0) break;
00872     if (IsPrintable(c)) {
00873       br.width += GetCharacterWidth(size, c);
00874     } else {
00875       switch (c) {
00876         case SCC_SETX: br.width = max((uint)*str++, br.width); break;
00877         case SCC_SETXY:
00878           br.width  = max((uint)*str++, br.width);
00879           br.height = max((uint)*str++, br.height);
00880           break;
00881         case SCC_TINYFONT: size = FS_SMALL; break;
00882         case SCC_BIGFONT:  size = FS_LARGE; break;
00883         case '\n':
00884           br.height += GetCharacterHeight(size);
00885           if (br.width > max_width) max_width = br.width;
00886           br.width = 0;
00887           break;
00888       }
00889     }
00890   }
00891   br.height += GetCharacterHeight(size);
00892 
00893   br.width  = max(br.width, max_width);
00894   return br;
00895 }
00896 
00903 Dimension GetStringBoundingBox(StringID strid)
00904 {
00905   char buffer[DRAW_STRING_BUFFER];
00906 
00907   GetString(buffer, strid, lastof(buffer));
00908   return GetStringBoundingBox(buffer);
00909 }
00910 
00918 void DrawCharCentered(WChar c, int x, int y, TextColour colour)
00919 {
00920   SetColourRemap(colour);
00921   GfxMainBlitter(GetGlyph(FS_NORMAL, c), x - GetCharacterWidth(FS_NORMAL, c) / 2, y, BM_COLOUR_REMAP);
00922 }
00923 
00941 static int ReallyDoDrawString(const UChar *string, int x, int y, TextColour &colour, bool parse_string_also_when_clipped)
00942 {
00943   DrawPixelInfo *dpi = _cur_dpi;
00944   FontSize size = _cur_fontsize;
00945   UChar c;
00946   int xo = x;
00947 
00948   TextColour previous_colour = colour;
00949 
00950   if (!parse_string_also_when_clipped) {
00951     /* in "mode multiline", the available space have been verified. Not in regular one.
00952      * So if the string cannot be drawn, return the original start to say so.*/
00953     if (x >= dpi->left + dpi->width || y >= dpi->top + dpi->height) return x;
00954 
00955     if (colour != TC_INVALID) { // the invalid colour flag test should not really occur. But better be safe
00956 switch_colour:;
00957       SetColourRemap(colour);
00958     }
00959   }
00960 
00961 check_bounds:
00962   if (y + _max_char_height <= dpi->top || dpi->top + dpi->height <= y) {
00963 skip_char:;
00964     for (;;) {
00965       c = *string++;
00966       if (!IsPrintable(c)) goto skip_cont;
00967     }
00968   }
00969 
00970   for (;;) {
00971     c = *string++;
00972 skip_cont:;
00973     if (c == 0) {
00974       _last_fontsize = size;
00975       return x;  // Nothing more to draw, get out. And here is the new x position
00976     }
00977     if (IsPrintable(c)) {
00978       if (x >= dpi->left + dpi->width) goto skip_char;
00979       if (x + _max_char_width >= dpi->left) {
00980         GfxMainBlitter(GetGlyph(size, c), x, y, BM_COLOUR_REMAP);
00981       }
00982       x += GetCharacterWidth(size, c);
00983     } else if (c == '\n') { // newline = {}
00984       x = xo;  // We require a new line, so the x coordinate is reset
00985       y += GetCharacterHeight(size);
00986       goto check_bounds;
00987     } else if (c >= SCC_BLUE && c <= SCC_BLACK) { // change colour?
00988       previous_colour = colour;
00989       colour = (TextColour)(c - SCC_BLUE);
00990       goto switch_colour;
00991     } else if (c == SCC_PREVIOUS_COLOUR) { // revert to the previous colour
00992       Swap(colour, previous_colour);
00993       goto switch_colour;
00994     } else if (c == SCC_SETX || c == SCC_SETXY) { // {SETX}/{SETXY}
00995       /* The characters are handled before calling this. */
00996       NOT_REACHED();
00997     } else if (c == SCC_TINYFONT) { // {TINYFONT}
00998       size = FS_SMALL;
00999     } else if (c == SCC_BIGFONT) { // {BIGFONT}
01000       size = FS_LARGE;
01001     } else {
01002       DEBUG(misc, 0, "[utf8] unknown string command character %d", c);
01003     }
01004   }
01005 }
01006 
01013 Dimension GetSpriteSize(SpriteID sprid)
01014 {
01015   const Sprite *sprite = GetSprite(sprid, ST_NORMAL);
01016 
01017   Dimension d;
01018   d.width  = max<int>(0, sprite->x_offs + sprite->width);
01019   d.height = max<int>(0, sprite->y_offs + sprite->height);
01020   return d;
01021 }
01022 
01031 void DrawSprite(SpriteID img, PaletteID pal, int x, int y, const SubSprite *sub)
01032 {
01033   if (HasBit(img, PALETTE_MODIFIER_TRANSPARENT)) {
01034     _colour_remap_ptr = GetNonSprite(GB(pal, 0, PALETTE_WIDTH), ST_RECOLOUR) + 1;
01035     GfxMainBlitter(GetSprite(GB(img, 0, SPRITE_WIDTH), ST_NORMAL), x, y, BM_TRANSPARENT, sub);
01036   } else if (pal != PAL_NONE) {
01037     _colour_remap_ptr = GetNonSprite(GB(pal, 0, PALETTE_WIDTH), ST_RECOLOUR) + 1;
01038     GfxMainBlitter(GetSprite(GB(img, 0, SPRITE_WIDTH), ST_NORMAL), x, y, BM_COLOUR_REMAP, sub);
01039   } else {
01040     GfxMainBlitter(GetSprite(GB(img, 0, SPRITE_WIDTH), ST_NORMAL), x, y, BM_NORMAL, sub);
01041   }
01042 }
01043 
01044 static void GfxMainBlitter(const Sprite *sprite, int x, int y, BlitterMode mode, const SubSprite *sub)
01045 {
01046   const DrawPixelInfo *dpi = _cur_dpi;
01047   Blitter::BlitterParams bp;
01048 
01049   /* Amount of pixels to clip from the source sprite */
01050   int clip_left   = (sub != NULL ? max(0,                   -sprite->x_offs + sub->left       ) : 0);
01051   int clip_top    = (sub != NULL ? max(0,                   -sprite->y_offs + sub->top        ) : 0);
01052   int clip_right  = (sub != NULL ? max(0, sprite->width  - (-sprite->x_offs + sub->right  + 1)) : 0);
01053   int clip_bottom = (sub != NULL ? max(0, sprite->height - (-sprite->y_offs + sub->bottom + 1)) : 0);
01054 
01055   if (clip_left + clip_right >= sprite->width) return;
01056   if (clip_top + clip_bottom >= sprite->height) return;
01057 
01058   /* Move to the correct offset */
01059   x += sprite->x_offs;
01060   y += sprite->y_offs;
01061 
01062   /* Copy the main data directly from the sprite */
01063   bp.sprite = sprite->data;
01064   bp.sprite_width = sprite->width;
01065   bp.sprite_height = sprite->height;
01066   bp.width = UnScaleByZoom(sprite->width - clip_left - clip_right, dpi->zoom);
01067   bp.height = UnScaleByZoom(sprite->height - clip_top - clip_bottom, dpi->zoom);
01068   bp.top = 0;
01069   bp.left = 0;
01070   bp.skip_left = UnScaleByZoomLower(clip_left, dpi->zoom);
01071   bp.skip_top = UnScaleByZoomLower(clip_top, dpi->zoom);
01072 
01073   x += ScaleByZoom(bp.skip_left, dpi->zoom);
01074   y += ScaleByZoom(bp.skip_top, dpi->zoom);
01075 
01076   bp.dst = dpi->dst_ptr;
01077   bp.pitch = dpi->pitch;
01078   bp.remap = _colour_remap_ptr;
01079 
01080   assert(sprite->width > 0);
01081   assert(sprite->height > 0);
01082 
01083   if (bp.width <= 0) return;
01084   if (bp.height <= 0) return;
01085 
01086   y -= dpi->top;
01087   /* Check for top overflow */
01088   if (y < 0) {
01089     bp.height -= -UnScaleByZoom(y, dpi->zoom);
01090     if (bp.height <= 0) return;
01091     bp.skip_top += -UnScaleByZoom(y, dpi->zoom);
01092     y = 0;
01093   } else {
01094     bp.top = UnScaleByZoom(y, dpi->zoom);
01095   }
01096 
01097   /* Check for bottom overflow */
01098   y += ScaleByZoom(bp.height, dpi->zoom) - dpi->height;
01099   if (y > 0) {
01100     bp.height -= UnScaleByZoom(y, dpi->zoom);
01101     if (bp.height <= 0) return;
01102   }
01103 
01104   x -= dpi->left;
01105   /* Check for left overflow */
01106   if (x < 0) {
01107     bp.width -= -UnScaleByZoom(x, dpi->zoom);
01108     if (bp.width <= 0) return;
01109     bp.skip_left += -UnScaleByZoom(x, dpi->zoom);
01110     x = 0;
01111   } else {
01112     bp.left = UnScaleByZoom(x, dpi->zoom);
01113   }
01114 
01115   /* Check for right overflow */
01116   x += ScaleByZoom(bp.width, dpi->zoom) - dpi->width;
01117   if (x > 0) {
01118     bp.width -= UnScaleByZoom(x, dpi->zoom);
01119     if (bp.width <= 0) return;
01120   }
01121 
01122   assert(bp.skip_left + bp.width <= UnScaleByZoom(sprite->width, dpi->zoom));
01123   assert(bp.skip_top + bp.height <= UnScaleByZoom(sprite->height, dpi->zoom));
01124 
01125   BlitterFactoryBase::GetCurrentBlitter()->Draw(&bp, mode, dpi->zoom);
01126 }
01127 
01128 void DoPaletteAnimations();
01129 
01130 void GfxInitPalettes()
01131 {
01132   memcpy(_cur_palette, _palettes[_use_palette], sizeof(_cur_palette));
01133 
01134   DoPaletteAnimations();
01135   _pal_first_dirty = 0;
01136   _pal_count_dirty = 256;
01137 }
01138 
01139 #define EXTR(p, q) (((uint16)(_palette_animation_counter * (p)) * (q)) >> 16)
01140 #define EXTR2(p, q) (((uint16)(~_palette_animation_counter * (p)) * (q)) >> 16)
01141 
01142 void DoPaletteAnimations()
01143 {
01144   Blitter *blitter = BlitterFactoryBase::GetCurrentBlitter();
01145   const Colour *s;
01146   const ExtraPaletteValues *ev = &_extra_palette_values;
01147   /* Amount of colours to be rotated.
01148    * A few more for the DOS palette, because the water colours are
01149    * 245-254 for DOS and 217-226 for Windows.  */
01150   const int colour_rotation_amount = (_use_palette == PAL_DOS) ? PALETTE_ANIM_SIZE_DOS : PALETTE_ANIM_SIZE_WIN;
01151   Colour old_val[PALETTE_ANIM_SIZE_DOS];
01152   const int oldval_size = colour_rotation_amount * sizeof(*old_val);
01153   const uint old_tc = _palette_animation_counter;
01154   uint i;
01155   uint j;
01156 
01157   if (blitter != NULL && blitter->UsePaletteAnimation() == Blitter::PALETTE_ANIMATION_NONE) {
01158     _palette_animation_counter = 0;
01159   }
01160 
01161   Colour *palette_pos = &_cur_palette[PALETTE_ANIM_SIZE_START];  // Points to where animations are taking place on the palette
01162   /* Makes a copy of the current anmation palette in old_val,
01163    * so the work on the current palette could be compared, see if there has been any changes */
01164   memcpy(old_val, palette_pos, oldval_size);
01165 
01166   /* Dark blue water */
01167   s = (_settings_game.game_creation.landscape == LT_TOYLAND) ? ev->dark_water_toyland : ev->dark_water;
01168   j = EXTR(320, EPV_CYCLES_DARK_WATER);
01169   for (i = 0; i != EPV_CYCLES_DARK_WATER; i++) {
01170     *palette_pos++ = s[j];
01171     j++;
01172     if (j == EPV_CYCLES_DARK_WATER) j = 0;
01173   }
01174 
01175   /* Glittery water; jumps over 3 colours each cycle! */
01176   s = (_settings_game.game_creation.landscape == LT_TOYLAND) ? ev->glitter_water_toyland : ev->glitter_water;
01177   j = EXTR(128, EPV_CYCLES_GLITTER_WATER);
01178   for (i = 0; i != EPV_CYCLES_GLITTER_WATER / 3; i++) {
01179     *palette_pos++ = s[j];
01180     j += 3;
01181     if (j >= EPV_CYCLES_GLITTER_WATER) j -= EPV_CYCLES_GLITTER_WATER;
01182   }
01183 
01184   /* Fizzy Drink bubbles animation */
01185   s = ev->fizzy_drink;
01186   j = EXTR2(512, EPV_CYCLES_FIZZY_DRINK);
01187   for (i = 0; i != EPV_CYCLES_FIZZY_DRINK; i++) {
01188     *palette_pos++ = s[j];
01189     j++;
01190     if (j == EPV_CYCLES_FIZZY_DRINK) j = 0;
01191   }
01192 
01193   /* Oil refinery fire animation */
01194   s = ev->oil_refinery;
01195   j = EXTR2(512, EPV_CYCLES_OIL_REFINERY);
01196   for (i = 0; i != EPV_CYCLES_OIL_REFINERY; i++) {
01197     *palette_pos++ = s[j];
01198     j++;
01199     if (j == EPV_CYCLES_OIL_REFINERY) j = 0;
01200   }
01201 
01202   /* Radio tower blinking */
01203   {
01204     byte i = (_palette_animation_counter >> 1) & 0x7F;
01205     byte v;
01206 
01207     if (i < 0x3f) {
01208       v = 255;
01209     } else if (i < 0x4A || i >= 0x75) {
01210       v = 128;
01211     } else {
01212       v = 20;
01213     }
01214     palette_pos->r = v;
01215     palette_pos->g = 0;
01216     palette_pos->b = 0;
01217     palette_pos++;
01218 
01219     i ^= 0x40;
01220     if (i < 0x3f) {
01221       v = 255;
01222     } else if (i < 0x4A || i >= 0x75) {
01223       v = 128;
01224     } else {
01225       v = 20;
01226     }
01227     palette_pos->r = v;
01228     palette_pos->g = 0;
01229     palette_pos->b = 0;
01230     palette_pos++;
01231   }
01232 
01233   /* Handle lighthouse and stadium animation */
01234   s = ev->lighthouse;
01235   j = EXTR(256, EPV_CYCLES_LIGHTHOUSE);
01236   for (i = 0; i != EPV_CYCLES_LIGHTHOUSE; i++) {
01237     *palette_pos++ = s[j];
01238     j++;
01239     if (j == EPV_CYCLES_LIGHTHOUSE) j = 0;
01240   }
01241 
01242   /* Animate water for old DOS graphics */
01243   if (_use_palette == PAL_DOS) {
01244     /* Dark blue water DOS */
01245     s = (_settings_game.game_creation.landscape == LT_TOYLAND) ? ev->dark_water_toyland : ev->dark_water;
01246     j = EXTR(320, EPV_CYCLES_DARK_WATER);
01247     for (i = 0; i != EPV_CYCLES_DARK_WATER; i++) {
01248       *palette_pos++ = s[j];
01249       j++;
01250       if (j == EPV_CYCLES_DARK_WATER) j = 0;
01251     }
01252 
01253     /* Glittery water DOS */
01254     s = (_settings_game.game_creation.landscape == LT_TOYLAND) ? ev->glitter_water_toyland : ev->glitter_water;
01255     j = EXTR(128, EPV_CYCLES_GLITTER_WATER);
01256     for (i = 0; i != EPV_CYCLES_GLITTER_WATER / 3; i++) {
01257       *palette_pos++ = s[j];
01258       j += 3;
01259       if (j >= EPV_CYCLES_GLITTER_WATER) j -= EPV_CYCLES_GLITTER_WATER;
01260     }
01261   }
01262 
01263   if (blitter != NULL && blitter->UsePaletteAnimation() == Blitter::PALETTE_ANIMATION_NONE) {
01264     _palette_animation_counter = old_tc;
01265   } else {
01266     if (memcmp(old_val, &_cur_palette[PALETTE_ANIM_SIZE_START], oldval_size) != 0) {
01267       /* Did we changed anything on the palette? Seems so.  Mark it as dirty */
01268       _pal_first_dirty = PALETTE_ANIM_SIZE_START;
01269       _pal_count_dirty = colour_rotation_amount;
01270     }
01271   }
01272 }
01273 
01274 
01276 void LoadStringWidthTable()
01277 {
01278   _max_char_height = 0;
01279   _max_char_width  = 0;
01280 
01281   for (FontSize fs = FS_BEGIN; fs < FS_END; fs++) {
01282     _max_char_height = max<int>(_max_char_height, GetCharacterHeight(fs));
01283     for (uint i = 0; i != 224; i++) {
01284       _stringwidth_table[fs][i] = GetGlyphWidth(fs, i + 32);
01285       _max_char_width = max<int>(_max_char_width, _stringwidth_table[fs][i]);
01286     }
01287   }
01288 
01289   /* Needed because they need to be 1 more than the widest. */
01290   _max_char_height++;
01291   _max_char_width++;
01292 
01293   ReInitAllWindows();
01294 }
01295 
01302 byte GetCharacterWidth(FontSize size, WChar key)
01303 {
01304   /* Use _stringwidth_table cache if possible */
01305   if (key >= 32 && key < 256) return _stringwidth_table[size][key - 32];
01306 
01307   return GetGlyphWidth(size, key);
01308 }
01309 
01315 byte GetDigitWidth(FontSize size)
01316 {
01317   byte width = 0;
01318   for (char c = '0'; c <= '9'; c++) {
01319     width = max(GetCharacterWidth(size, c), width);
01320   }
01321   return width;
01322 }
01323 
01324 
01325 void ScreenSizeChanged()
01326 {
01327   _dirty_bytes_per_line = (_screen.width + DIRTY_BLOCK_WIDTH - 1) / DIRTY_BLOCK_WIDTH;
01328   _dirty_blocks = ReallocT<byte>(_dirty_blocks, _dirty_bytes_per_line * ((_screen.height + DIRTY_BLOCK_HEIGHT - 1) / DIRTY_BLOCK_HEIGHT));
01329 
01330   /* check the dirty rect */
01331   if (_invalid_rect.right >= _screen.width) _invalid_rect.right = _screen.width;
01332   if (_invalid_rect.bottom >= _screen.height) _invalid_rect.bottom = _screen.height;
01333 
01334   /* screen size changed and the old bitmap is invalid now, so we don't want to undraw it */
01335   _cursor.visible = false;
01336 }
01337 
01338 void UndrawMouseCursor()
01339 {
01340   /* Don't undraw the mouse cursor if the screen is not ready */
01341   if (_screen.dst_ptr == NULL) return;
01342 
01343   if (_cursor.visible) {
01344     Blitter *blitter = BlitterFactoryBase::GetCurrentBlitter();
01345     _cursor.visible = false;
01346     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);
01347     _video_driver->MakeDirty(_cursor.draw_pos.x, _cursor.draw_pos.y, _cursor.draw_size.x, _cursor.draw_size.y);
01348   }
01349 }
01350 
01351 void DrawMouseCursor()
01352 {
01353 #if defined(WINCE)
01354   /* Don't ever draw the mouse for WinCE, as we work with a stylus */
01355   return;
01356 #endif
01357 
01358   /* Don't draw the mouse cursor if the screen is not ready */
01359   if (_screen.dst_ptr == NULL) return;
01360 
01361   Blitter *blitter = BlitterFactoryBase::GetCurrentBlitter();
01362   int x;
01363   int y;
01364   int w;
01365   int h;
01366 
01367   /* Redraw mouse cursor but only when it's inside the window */
01368   if (!_cursor.in_window) return;
01369 
01370   /* Don't draw the mouse cursor if it's already drawn */
01371   if (_cursor.visible) {
01372     if (!_cursor.dirty) return;
01373     UndrawMouseCursor();
01374   }
01375 
01376   w = _cursor.size.x;
01377   x = _cursor.pos.x + _cursor.offs.x + _cursor.short_vehicle_offset;
01378   if (x < 0) {
01379     w += x;
01380     x = 0;
01381   }
01382   if (w > _screen.width - x) w = _screen.width - x;
01383   if (w <= 0) return;
01384   _cursor.draw_pos.x = x;
01385   _cursor.draw_size.x = w;
01386 
01387   h = _cursor.size.y;
01388   y = _cursor.pos.y + _cursor.offs.y;
01389   if (y < 0) {
01390     h += y;
01391     y = 0;
01392   }
01393   if (h > _screen.height - y) h = _screen.height - y;
01394   if (h <= 0) return;
01395   _cursor.draw_pos.y = y;
01396   _cursor.draw_size.y = h;
01397 
01398   uint8 *buffer = _cursor_backup.Allocate(blitter->BufferSize(w, h));
01399 
01400   /* Make backup of stuff below cursor */
01401   blitter->CopyToBuffer(blitter->MoveTo(_screen.dst_ptr, _cursor.draw_pos.x, _cursor.draw_pos.y), buffer, _cursor.draw_size.x, _cursor.draw_size.y);
01402 
01403   /* Draw cursor on screen */
01404   _cur_dpi = &_screen;
01405   DrawSprite(_cursor.sprite, _cursor.pal, _cursor.pos.x + _cursor.short_vehicle_offset, _cursor.pos.y);
01406 
01407   _video_driver->MakeDirty(_cursor.draw_pos.x, _cursor.draw_pos.y, _cursor.draw_size.x, _cursor.draw_size.y);
01408 
01409   _cursor.visible = true;
01410   _cursor.dirty = false;
01411 }
01412 
01413 void RedrawScreenRect(int left, int top, int right, int bottom)
01414 {
01415   assert(right <= _screen.width && bottom <= _screen.height);
01416   if (_cursor.visible) {
01417     if (right > _cursor.draw_pos.x &&
01418         left < _cursor.draw_pos.x + _cursor.draw_size.x &&
01419         bottom > _cursor.draw_pos.y &&
01420         top < _cursor.draw_pos.y + _cursor.draw_size.y) {
01421       UndrawMouseCursor();
01422     }
01423   }
01424 
01425 #ifdef ENABLE_NETWORK
01426   if (_networking) NetworkUndrawChatMessage();
01427 #endif /* ENABLE_NETWORK */
01428 
01429   DrawOverlappedWindowForAll(left, top, right, bottom);
01430 
01431   _video_driver->MakeDirty(left, top, right - left, bottom - top);
01432 }
01433 
01439 void DrawDirtyBlocks()
01440 {
01441   byte *b = _dirty_blocks;
01442   const int w = Align(_screen.width,  DIRTY_BLOCK_WIDTH);
01443   const int h = Align(_screen.height, DIRTY_BLOCK_HEIGHT);
01444   int x;
01445   int y;
01446 
01447   if (IsGeneratingWorld()) {
01448     /* We are generating the world, so release our rights to the map and
01449      * painting while we are waiting a bit. */
01450     _genworld_paint_mutex->EndCritical();
01451     _genworld_mapgen_mutex->EndCritical();
01452 
01453     /* Wait a while and update _realtime_tick so we are given the rights */
01454     CSleep(GENWORLD_REDRAW_TIMEOUT);
01455     _realtime_tick += GENWORLD_REDRAW_TIMEOUT;
01456     _genworld_paint_mutex->BeginCritical();
01457     _genworld_mapgen_mutex->BeginCritical();
01458   }
01459 
01460   y = 0;
01461   do {
01462     x = 0;
01463     do {
01464       if (*b != 0) {
01465         int left;
01466         int top;
01467         int right = x + DIRTY_BLOCK_WIDTH;
01468         int bottom = y;
01469         byte *p = b;
01470         int h2;
01471 
01472         /* First try coalescing downwards */
01473         do {
01474           *p = 0;
01475           p += _dirty_bytes_per_line;
01476           bottom += DIRTY_BLOCK_HEIGHT;
01477         } while (bottom != h && *p != 0);
01478 
01479         /* Try coalescing to the right too. */
01480         h2 = (bottom - y) / DIRTY_BLOCK_HEIGHT;
01481         assert(h2 > 0);
01482         p = b;
01483 
01484         while (right != w) {
01485           byte *p2 = ++p;
01486           int h = h2;
01487           /* Check if a full line of dirty flags is set. */
01488           do {
01489             if (!*p2) goto no_more_coalesc;
01490             p2 += _dirty_bytes_per_line;
01491           } while (--h != 0);
01492 
01493           /* Wohoo, can combine it one step to the right!
01494            * Do that, and clear the bits. */
01495           right += DIRTY_BLOCK_WIDTH;
01496 
01497           h = h2;
01498           p2 = p;
01499           do {
01500             *p2 = 0;
01501             p2 += _dirty_bytes_per_line;
01502           } while (--h != 0);
01503         }
01504         no_more_coalesc:
01505 
01506         left = x;
01507         top = y;
01508 
01509         if (left   < _invalid_rect.left  ) left   = _invalid_rect.left;
01510         if (top    < _invalid_rect.top   ) top    = _invalid_rect.top;
01511         if (right  > _invalid_rect.right ) right  = _invalid_rect.right;
01512         if (bottom > _invalid_rect.bottom) bottom = _invalid_rect.bottom;
01513 
01514         if (left < right && top < bottom) {
01515           RedrawScreenRect(left, top, right, bottom);
01516         }
01517 
01518       }
01519     } while (b++, (x += DIRTY_BLOCK_WIDTH) != w);
01520   } while (b += -(w / DIRTY_BLOCK_WIDTH) + _dirty_bytes_per_line, (y += DIRTY_BLOCK_HEIGHT) != h);
01521 
01522   _invalid_rect.left = w;
01523   _invalid_rect.top = h;
01524   _invalid_rect.right = 0;
01525   _invalid_rect.bottom = 0;
01526 }
01527 
01543 void SetDirtyBlocks(int left, int top, int right, int bottom)
01544 {
01545   byte *b;
01546   int width;
01547   int height;
01548 
01549   if (left < 0) left = 0;
01550   if (top < 0) top = 0;
01551   if (right > _screen.width) right = _screen.width;
01552   if (bottom > _screen.height) bottom = _screen.height;
01553 
01554   if (left >= right || top >= bottom) return;
01555 
01556   if (left   < _invalid_rect.left  ) _invalid_rect.left   = left;
01557   if (top    < _invalid_rect.top   ) _invalid_rect.top    = top;
01558   if (right  > _invalid_rect.right ) _invalid_rect.right  = right;
01559   if (bottom > _invalid_rect.bottom) _invalid_rect.bottom = bottom;
01560 
01561   left /= DIRTY_BLOCK_WIDTH;
01562   top  /= DIRTY_BLOCK_HEIGHT;
01563 
01564   b = _dirty_blocks + top * _dirty_bytes_per_line + left;
01565 
01566   width  = ((right  - 1) / DIRTY_BLOCK_WIDTH)  - left + 1;
01567   height = ((bottom - 1) / DIRTY_BLOCK_HEIGHT) - top  + 1;
01568 
01569   assert(width > 0 && height > 0);
01570 
01571   do {
01572     int i = width;
01573 
01574     do b[--i] = 0xFF; while (i);
01575 
01576     b += _dirty_bytes_per_line;
01577   } while (--height != 0);
01578 }
01579 
01585 void MarkWholeScreenDirty()
01586 {
01587   SetDirtyBlocks(0, 0, _screen.width, _screen.height);
01588 }
01589 
01602 bool FillDrawPixelInfo(DrawPixelInfo *n, int left, int top, int width, int height)
01603 {
01604   Blitter *blitter = BlitterFactoryBase::GetCurrentBlitter();
01605   const DrawPixelInfo *o = _cur_dpi;
01606 
01607   n->zoom = ZOOM_LVL_NORMAL;
01608 
01609   assert(width > 0);
01610   assert(height > 0);
01611 
01612   if ((left -= o->left) < 0) {
01613     width += left;
01614     if (width <= 0) return false;
01615     n->left = -left;
01616     left = 0;
01617   } else {
01618     n->left = 0;
01619   }
01620 
01621   if (width > o->width - left) {
01622     width = o->width - left;
01623     if (width <= 0) return false;
01624   }
01625   n->width = width;
01626 
01627   if ((top -= o->top) < 0) {
01628     height += top;
01629     if (height <= 0) return false;
01630     n->top = -top;
01631     top = 0;
01632   } else {
01633     n->top = 0;
01634   }
01635 
01636   n->dst_ptr = blitter->MoveTo(o->dst_ptr, left, top);
01637   n->pitch = o->pitch;
01638 
01639   if (height > o->height - top) {
01640     height = o->height - top;
01641     if (height <= 0) return false;
01642   }
01643   n->height = height;
01644 
01645   return true;
01646 }
01647 
01648 static void SetCursorSprite(CursorID cursor, PaletteID pal)
01649 {
01650   CursorVars *cv = &_cursor;
01651   const Sprite *p;
01652 
01653   if (cv->sprite == cursor) return;
01654 
01655   p = GetSprite(GB(cursor, 0, SPRITE_WIDTH), ST_NORMAL);
01656   cv->sprite = cursor;
01657   cv->pal    = pal;
01658   cv->size.y = p->height;
01659   cv->size.x = p->width;
01660   cv->offs.x = p->x_offs;
01661   cv->offs.y = p->y_offs;
01662 
01663   cv->dirty = true;
01664   cv->short_vehicle_offset = 0;
01665 }
01666 
01667 static void SwitchAnimatedCursor()
01668 {
01669   const AnimCursor *cur = _cursor.animate_cur;
01670 
01671   if (cur == NULL || cur->sprite == AnimCursor::LAST) cur = _cursor.animate_list;
01672 
01673   SetCursorSprite(cur->sprite, _cursor.pal);
01674 
01675   _cursor.animate_timeout = cur->display_time;
01676   _cursor.animate_cur     = cur + 1;
01677 }
01678 
01679 void CursorTick()
01680 {
01681   if (_cursor.animate_timeout != 0 && --_cursor.animate_timeout == 0)
01682     SwitchAnimatedCursor();
01683 }
01684 
01685 void SetMouseCursor(CursorID sprite, PaletteID pal)
01686 {
01687   /* Turn off animation */
01688   _cursor.animate_timeout = 0;
01689   /* Set cursor */
01690   SetCursorSprite(sprite, pal);
01691 }
01692 
01693 void SetAnimatedMouseCursor(const AnimCursor *table)
01694 {
01695   _cursor.animate_list = table;
01696   _cursor.animate_cur = NULL;
01697   _cursor.pal = PAL_NONE;
01698   SwitchAnimatedCursor();
01699 }
01700 
01701 bool ChangeResInGame(int width, int height)
01702 {
01703   return (_screen.width == width && _screen.height == height) || _video_driver->ChangeResolution(width, height);
01704 }
01705 
01706 bool ToggleFullScreen(bool fs)
01707 {
01708   bool result = _video_driver->ToggleFullscreen(fs);
01709   if (_fullscreen != fs && _num_resolutions == 0) {
01710     DEBUG(driver, 0, "Could not find a suitable fullscreen resolution");
01711   }
01712   return result;
01713 }
01714 
01715 static int CDECL compare_res(const Dimension *pa, const Dimension *pb)
01716 {
01717   int x = pa->width - pb->width;
01718   if (x != 0) return x;
01719   return pa->height - pb->height;
01720 }
01721 
01722 void SortResolutions(int count)
01723 {
01724   QSortT(_resolutions, count, &compare_res);
01725 }

Generated on Sat Apr 17 23:24:48 2010 for OpenTTD by  doxygen 1.6.1