gfx.cpp

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00001 /* $Id: gfx.cpp 18575 2009-12-20 16:42:35Z rubidium $ */
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_func.h"
00024 #include "thread/thread.h"
00025 #include "window_func.h"
00026 
00027 #include "table/palettes.h"
00028 #include "table/sprites.h"
00029 #include "table/control_codes.h"
00030 
00031 byte _dirkeys;        
00032 bool _fullscreen;
00033 CursorVars _cursor;
00034 bool _ctrl_pressed;   
00035 bool _shift_pressed;  
00036 byte _fast_forward;
00037 bool _left_button_down;     
00038 bool _left_button_clicked;  
00039 bool _right_button_down;    
00040 bool _right_button_clicked; 
00041 DrawPixelInfo _screen;
00042 bool _screen_disable_anim = false;   
00043 bool _exit_game;
00044 GameMode _game_mode;
00045 SwitchMode _switch_mode;  
00046 PauseModeByte _pause_mode;
00047 int _pal_first_dirty;
00048 int _pal_count_dirty;
00049 
00050 Colour _cur_palette[256];
00051 
00052 static int _max_char_height; 
00053 static int _max_char_width;  
00054 static byte _stringwidth_table[FS_END][224]; 
00055 DrawPixelInfo *_cur_dpi;
00056 byte _colour_gradient[COLOUR_END][8];
00057 
00058 static void GfxMainBlitter(const Sprite *sprite, int x, int y, BlitterMode mode, const SubSprite *sub = NULL);
00059 
00060 FontSize _cur_fontsize;
00061 static FontSize _last_fontsize;
00062 static ReusableBuffer<uint8> _cursor_backup;
00063 
00071 static Rect _invalid_rect;
00072 static const byte *_colour_remap_ptr;
00073 static byte _string_colourremap[3]; 
00074 
00075 enum {
00076   DIRTY_BLOCK_HEIGHT   = 8,
00077   DIRTY_BLOCK_WIDTH    = 64,
00078 };
00079 static uint _dirty_bytes_per_line = 0;
00080 static byte *_dirty_blocks = NULL;
00081 
00082 void GfxScroll(int left, int top, int width, int height, int xo, int yo)
00083 {
00084   Blitter *blitter = BlitterFactoryBase::GetCurrentBlitter();
00085 
00086   if (xo == 0 && yo == 0) return;
00087 
00088   if (_cursor.visible) UndrawMouseCursor();
00089 
00090 #ifdef ENABLE_NETWORK
00091   NetworkUndrawChatMessage();
00092 #endif /* ENABLE_NETWORK */
00093 
00094   blitter->ScrollBuffer(_screen.dst_ptr, left, top, width, height, xo, yo);
00095   /* This part of the screen is now dirty. */
00096   _video_driver->MakeDirty(left, top, width, height);
00097 }
00098 
00099 
00114 void GfxFillRect(int left, int top, int right, int bottom, int colour, FillRectMode mode)
00115 {
00116   Blitter *blitter = BlitterFactoryBase::GetCurrentBlitter();
00117   const DrawPixelInfo *dpi = _cur_dpi;
00118   void *dst;
00119   const int otop = top;
00120   const int oleft = left;
00121 
00122   if (dpi->zoom != ZOOM_LVL_NORMAL) return;
00123   if (left > right || top > bottom) return;
00124   if (right < dpi->left || left >= dpi->left + dpi->width) return;
00125   if (bottom < dpi->top || top >= dpi->top + dpi->height) return;
00126 
00127   if ( (left -= dpi->left) < 0) left = 0;
00128   right = right - dpi->left + 1;
00129   if (right > dpi->width) right = dpi->width;
00130   right -= left;
00131   assert(right > 0);
00132 
00133   if ( (top -= dpi->top) < 0) top = 0;
00134   bottom = bottom - dpi->top + 1;
00135   if (bottom > dpi->height) bottom = dpi->height;
00136   bottom -= top;
00137   assert(bottom > 0);
00138 
00139   dst = blitter->MoveTo(dpi->dst_ptr, left, top);
00140 
00141   switch (mode) {
00142     default: // FILLRECT_OPAQUE
00143       blitter->DrawRect(dst, right, bottom, (uint8)colour);
00144       break;
00145 
00146     case FILLRECT_RECOLOUR:
00147       blitter->DrawColourMappingRect(dst, right, bottom, GB(colour, 0, PALETTE_WIDTH));
00148       break;
00149 
00150     case FILLRECT_CHECKER: {
00151       byte bo = (oleft - left + dpi->left + otop - top + dpi->top) & 1;
00152       do {
00153         for (int i = (bo ^= 1); i < right; i += 2) blitter->SetPixel(dst, i, 0, (uint8)colour);
00154         dst = blitter->MoveTo(dst, 0, 1);
00155       } while (--bottom > 0);
00156       break;
00157     }
00158   }
00159 }
00160 
00161 void GfxDrawLine(int x, int y, int x2, int y2, int colour)
00162 {
00163   Blitter *blitter = BlitterFactoryBase::GetCurrentBlitter();
00164   DrawPixelInfo *dpi = _cur_dpi;
00165 
00166   x -= dpi->left;
00167   x2 -= dpi->left;
00168   y -= dpi->top;
00169   y2 -= dpi->top;
00170 
00171   /* Check clipping */
00172   if (x < 0 && x2 < 0) return;
00173   if (y < 0 && y2 < 0) return;
00174   if (x > dpi->width  && x2 > dpi->width)  return;
00175   if (y > dpi->height && y2 > dpi->height) return;
00176 
00177   blitter->DrawLine(dpi->dst_ptr, x, y, x2, y2, dpi->width, dpi->height, colour);
00178 }
00179 
00180 void GfxDrawLineUnscaled(int x, int y, int x2, int y2, int colour)
00181 {
00182   Blitter *blitter = BlitterFactoryBase::GetCurrentBlitter();
00183   DrawPixelInfo *dpi = _cur_dpi;
00184 
00185   x -= dpi->left;
00186   x2 -= dpi->left;
00187   y -= dpi->top;
00188   y2 -= dpi->top;
00189 
00190   /* Check clipping */
00191   if (x < 0 && x2 < 0) return;
00192   if (y < 0 && y2 < 0) return;
00193   if (x > dpi->width  && x2 > dpi->width)  return;
00194   if (y > dpi->height && y2 > dpi->height) return;
00195 
00196   blitter->DrawLine(dpi->dst_ptr, UnScaleByZoom(x, dpi->zoom), UnScaleByZoom(y, dpi->zoom),
00197       UnScaleByZoom(x2, dpi->zoom), UnScaleByZoom(y2, dpi->zoom),
00198       UnScaleByZoom(dpi->width, dpi->zoom), UnScaleByZoom(dpi->height, dpi->zoom), colour);
00199 }
00200 
00214 void DrawBox(int x, int y, int dx1, int dy1, int dx2, int dy2, int dx3, int dy3)
00215 {
00216   /*           ....
00217    *         ..    ....
00218    *       ..          ....
00219    *     ..                ^
00220    *   <--__(dx1,dy1)    /(dx2,dy2)
00221    *   :    --__       /   :
00222    *   :        --__ /     :
00223    *   :            *(x,y) :
00224    *   :            |      :
00225    *   :            |     ..
00226    *    ....        |(dx3,dy3)
00227    *        ....    | ..
00228    *            ....V.
00229    */
00230 
00231   static const byte colour = 255;
00232 
00233   GfxDrawLineUnscaled(x, y, x + dx1, y + dy1, colour);
00234   GfxDrawLineUnscaled(x, y, x + dx2, y + dy2, colour);
00235   GfxDrawLineUnscaled(x, y, x + dx3, y + dy3, colour);
00236 
00237   GfxDrawLineUnscaled(x + dx1, y + dy1, x + dx1 + dx2, y + dy1 + dy2, colour);
00238   GfxDrawLineUnscaled(x + dx1, y + dy1, x + dx1 + dx3, y + dy1 + dy3, colour);
00239   GfxDrawLineUnscaled(x + dx2, y + dy2, x + dx2 + dx1, y + dy2 + dy1, colour);
00240   GfxDrawLineUnscaled(x + dx2, y + dy2, x + dx2 + dx3, y + dy2 + dy3, colour);
00241   GfxDrawLineUnscaled(x + dx3, y + dy3, x + dx3 + dx1, y + dy3 + dy1, colour);
00242   GfxDrawLineUnscaled(x + dx3, y + dy3, x + dx3 + dx2, y + dy3 + dy2, colour);
00243 }
00244 
00249 static void SetColourRemap(TextColour colour)
00250 {
00251   if (colour == TC_INVALID) return;
00252 
00253   if (colour & IS_PALETTE_COLOUR) {
00254     _string_colourremap[1] = colour & ~IS_PALETTE_COLOUR;
00255     _string_colourremap[2] = (_use_palette == PAL_DOS) ? 1 : 215;
00256   } else {
00257     _string_colourremap[1] = _string_colourmap[_use_palette][colour].text;
00258     _string_colourremap[2] = _string_colourmap[_use_palette][colour].shadow;
00259   }
00260   _colour_remap_ptr = _string_colourremap;
00261 }
00262 
00263 #if !defined(WITH_ICU)
00264 typedef WChar UChar;
00265 static UChar *HandleBiDiAndArabicShapes(UChar *text) { return text; }
00266 #else
00267 #include <unicode/ubidi.h>
00268 #include <unicode/ushape.h>
00269 
00299 static UChar *HandleBiDiAndArabicShapes(UChar *buffer)
00300 {
00301   static UChar input_output[DRAW_STRING_BUFFER];
00302   UChar intermediate[DRAW_STRING_BUFFER];
00303 
00304   UChar *t = buffer;
00305   size_t length = 0;
00306   while (*t != '\0' && length < lengthof(input_output) - 1) {
00307     input_output[length++] = *t++;
00308   }
00309   input_output[length] = 0;
00310 
00311   UErrorCode err = U_ZERO_ERROR;
00312   UBiDi *para = ubidi_openSized((int32_t)length, 0, &err);
00313   if (para == NULL) return buffer;
00314 
00315   ubidi_setPara(para, input_output, (int32_t)length, _dynlang.text_dir == TD_RTL ? UBIDI_DEFAULT_RTL : UBIDI_DEFAULT_LTR, NULL, &err);
00316   ubidi_writeReordered(para, intermediate, (int32_t)length, 0, &err);
00317   length = u_shapeArabic(intermediate, (int32_t)length, input_output, lengthof(input_output), U_SHAPE_TEXT_DIRECTION_VISUAL_LTR | U_SHAPE_LETTERS_SHAPE, &err);
00318   ubidi_close(para);
00319 
00320   if (U_FAILURE(err)) return buffer;
00321 
00322   input_output[length] = '\0';
00323   return input_output;
00324 }
00325 #endif /* WITH_ICU */
00326 
00327 
00335 static int TruncateString(char *str, int maxw, bool ignore_setxy)
00336 {
00337   int w = 0;
00338   FontSize size = _cur_fontsize;
00339   int ddd, ddd_w;
00340 
00341   WChar c;
00342   char *ddd_pos;
00343 
00344   ddd_w = ddd = GetCharacterWidth(size, '.') * 3;
00345 
00346   for (ddd_pos = str; (c = Utf8Consume(const_cast<const char **>(&str))) != '\0'; ) {
00347     if (IsPrintable(c)) {
00348       w += GetCharacterWidth(size, c);
00349 
00350       if (w > maxw) {
00351         /* string got too big... insert dotdotdot, but make sure we do not
00352          * print anything beyond the string termination character. */
00353         for (int i = 0; *ddd_pos != '\0' && i < 3; i++, ddd_pos++) *ddd_pos = '.';
00354         *ddd_pos = '\0';
00355         return ddd_w;
00356       }
00357     } else {
00358       if (c == SCC_SETX) {
00359         if (!ignore_setxy) w = *str;
00360         str++;
00361       } else if (c == SCC_SETXY) {
00362         if (!ignore_setxy) w = *str;
00363         str += 2;
00364       } else if (c == SCC_TINYFONT) {
00365         size = FS_SMALL;
00366         ddd = GetCharacterWidth(size, '.') * 3;
00367       } else if (c == SCC_BIGFONT) {
00368         size = FS_LARGE;
00369         ddd = GetCharacterWidth(size, '.') * 3;
00370       } else if (c == '\n') {
00371         DEBUG(misc, 0, "Drawing string using newlines with DrawString instead of DrawStringMultiLine. Please notify the developers of this: [%s]", str);
00372       }
00373     }
00374 
00375     /* Remember the last position where three dots fit. */
00376     if (w + ddd < maxw) {
00377       ddd_w = w + ddd;
00378       ddd_pos = str;
00379     }
00380   }
00381 
00382   return w;
00383 }
00384 
00385 static int ReallyDoDrawString(const UChar *string, int x, int y, TextColour &colour, bool parse_string_also_when_clipped = false);
00386 
00392 static int GetStringWidth(const UChar *str)
00393 {
00394   FontSize size = _cur_fontsize;
00395   int max_width;
00396   int width;
00397   WChar c;
00398 
00399   width = max_width = 0;
00400   for (;;) {
00401     c = *str++;
00402     if (c == 0) break;
00403     if (IsPrintable(c)) {
00404       width += GetCharacterWidth(size, c);
00405     } else {
00406       switch (c) {
00407         case SCC_SETX:
00408         case SCC_SETXY:
00409           /* At this point there is no SCC_SETX(Y) anymore */
00410           NOT_REACHED();
00411           break;
00412         case SCC_TINYFONT: size = FS_SMALL; break;
00413         case SCC_BIGFONT:  size = FS_LARGE; break;
00414         case '\n':
00415           max_width = max(max_width, width);
00416           break;
00417       }
00418     }
00419   }
00420 
00421   return max(max_width, width);
00422 }
00423 
00442 static int DrawString(int left, int right, int top, char *str, const char *last, TextColour colour, StringAlignment align, bool underline = false, bool truncate = true)
00443 {
00444   /* We need the outer limits of both left/right */
00445   int min_left = INT32_MAX;
00446   int max_right = INT32_MIN;
00447 
00448   int initial_left = left;
00449   int initial_right = right;
00450   int initial_top = top;
00451 
00452   if (truncate) TruncateString(str, right - left + 1, (align & SA_STRIP) == SA_STRIP);
00453 
00454   /*
00455    * To support SETX and SETXY properly with RTL languages we have to
00456    * calculate the offsets from the right. To do this we need to split
00457    * the string and draw the parts separated by SETX(Y).
00458    * So here we split
00459    */
00460   static SmallVector<UChar *, 4> setx_offsets;
00461   setx_offsets.Clear();
00462 
00463   UChar draw_buffer[DRAW_STRING_BUFFER];
00464   UChar *p = draw_buffer;
00465 
00466   *setx_offsets.Append() = p;
00467 
00468   char *loc = str;
00469   for (;;) {
00470     WChar c;
00471     /* We cannot use Utf8Consume as we need the location of the SETX(Y) */
00472     size_t len = Utf8Decode(&c, loc);
00473     *p++ = c;
00474 
00475     if (c == '\0') break;
00476     if (p >= lastof(draw_buffer) - 3) {
00477       /* Make sure we never overflow (even if copying SCC_SETX(Y)). */
00478       *p = '\0';
00479       break;
00480     }
00481     if (c != SCC_SETX && c != SCC_SETXY) {
00482       loc += len;
00483       continue;
00484     }
00485 
00486     if (align & SA_STRIP) {
00487       /* We do not want to keep the SETX(Y)!. It was already copied, so
00488        * remove it and undo the incrementing of the pointer! */
00489       *p-- = '\0';
00490       loc += len + (c == SCC_SETXY ? 2 : 1);
00491       continue;
00492     }
00493 
00494     if ((align & SA_MASK) != SA_LEFT) {
00495       DEBUG(grf, 1, "Using SETX and/or SETXY when not aligned to the left. Fixing alignment...");
00496 
00497       /* For left alignment and change the left so it will roughly be in the
00498        * middle. This will never cause the string to be completely centered,
00499        * but once SETX is used you cannot be sure the actual content of the
00500        * string is centered, so it doesn't really matter. */
00501       align = SA_LEFT | SA_FORCE;
00502       initial_left = left = max(left, (left + right - (int)GetStringBoundingBox(str).width) / 2);
00503     }
00504 
00505     /* We add the begin of the string, but don't add it twice */
00506     if (p != draw_buffer) {
00507       *setx_offsets.Append() = p;
00508       p[-1] = '\0';
00509       *p++ = c;
00510     }
00511 
00512     /* Skip the SCC_SETX(Y) ... */
00513     loc += len;
00514     /* ... copy the x coordinate ... */
00515     *p++ = *loc++;
00516     /* ... and finally copy the y coordinate if it exists */
00517     if (c == SCC_SETXY) *p++ = *loc++;
00518   }
00519 
00520   /* In case we have a RTL language we swap the alignment. */
00521   if (!(align & SA_FORCE) && _dynlang.text_dir == TD_RTL && align != SA_CENTER) align ^= SA_RIGHT;
00522 
00523   for (UChar **iter = setx_offsets.Begin(); iter != setx_offsets.End(); iter++) {
00524     UChar *to_draw = *iter;
00525     int offset = 0;
00526 
00527     /* Skip the SETX(Y) and set the appropriate offsets. */
00528     if (*to_draw == SCC_SETX || *to_draw == SCC_SETXY) {
00529       to_draw++;
00530       offset = *to_draw++;
00531       if (*to_draw == SCC_SETXY) top = initial_top + *to_draw++;
00532 
00533       _cur_fontsize = _last_fontsize;
00534     }
00535 
00536     to_draw = HandleBiDiAndArabicShapes(to_draw);
00537     int w = GetStringWidth(to_draw);
00538 
00539     /* right is the right most position to draw on. In this case we want to do
00540      * calculations with the width of the string. In comparison right can be
00541      * seen as lastof(todraw) and width as lengthof(todraw). They differ by 1.
00542      * So most +1/-1 additions are to move from lengthof to 'indices'.
00543      */
00544     switch (align & SA_MASK) {
00545       case SA_LEFT:
00546         /* right + 1 = left + w */
00547         left = initial_left + offset;
00548         right = left + w - 1;
00549         break;
00550 
00551       case SA_CENTER:
00552         /* The second + 1 is to round to the closest number */
00553         left  = (initial_right + 1 + initial_left - w + 1) / 2;
00554         /* right + 1 = left + w */
00555         right = left + w - 1;
00556         break;
00557 
00558       case SA_RIGHT:
00559         left = initial_right + 1 - w - offset;
00560         break;
00561 
00562       default:
00563         NOT_REACHED();
00564     }
00565 
00566     min_left  = min(left, min_left);
00567     max_right = max(right, max_right);
00568 
00569     ReallyDoDrawString(to_draw, left, top, colour, !truncate);
00570     if (underline) {
00571       GfxFillRect(left, top + FONT_HEIGHT_NORMAL, right, top + FONT_HEIGHT_NORMAL, _string_colourremap[1]);
00572     }
00573   }
00574 
00575   _cur_fontsize = FS_NORMAL;
00576 
00577   return align == SA_RIGHT ? min_left : max_right;
00578 }
00579 
00593 int DrawString(int left, int right, int top, const char *str, TextColour colour, StringAlignment align, bool underline)
00594 {
00595   char buffer[DRAW_STRING_BUFFER];
00596   strecpy(buffer, str, lastof(buffer));
00597   return DrawString(left, right, top, buffer, lastof(buffer), colour, align, underline);
00598 }
00599 
00613 int DrawString(int left, int right, int top, StringID str, TextColour colour, StringAlignment align, bool underline)
00614 {
00615   char buffer[DRAW_STRING_BUFFER];
00616   GetString(buffer, str, lastof(buffer));
00617   return DrawString(left, right, top, buffer, lastof(buffer), colour, align, underline);
00618 }
00619 
00639 uint32 FormatStringLinebreaks(char *str, const char *last, int maxw)
00640 {
00641   FontSize size = _cur_fontsize;
00642   int num = 0;
00643 
00644   assert(maxw > 0);
00645 
00646   for (;;) {
00647     /* The character *after* the last space. */
00648     char *last_space = NULL;
00649     int w = 0;
00650 
00651     for (;;) {
00652       WChar c = Utf8Consume(const_cast<const char **>(&str));
00653       /* whitespace is where we will insert the line-break */
00654       if (IsWhitespace(c)) last_space = str;
00655 
00656       if (IsPrintable(c)) {
00657         int char_w = GetCharacterWidth(size, c);
00658         w += char_w;
00659         if (w > maxw) {
00660           /* The string is longer than maximum width so we need to decide
00661            * what to do with it. */
00662           if (w == char_w) {
00663             /* The character is wider than allowed width; don't know
00664              * what to do with this case... bail out! */
00665             return num + (size << 16);
00666           }
00667           if (last_space == NULL) {
00668             /* No space has been found. Just terminate at our current
00669              * location. This usually happens for languages that do not
00670              * require spaces in strings, like Chinese, Japanese and
00671              * Korean. For other languages terminating mid-word might
00672              * not be the best, but terminating the whole string instead
00673              * of continuing the word at the next line is worse. */
00674             str = Utf8PrevChar(str);
00675             size_t len = strlen(str);
00676             char *terminator = str + len;
00677 
00678             /* The string location + length of the string + 1 for '\0'
00679              * always fits; otherwise there's no trailing '\0' and it
00680              * it not a valid string. */
00681             assert(terminator <= last);
00682             assert(*terminator == '\0');
00683 
00684             /* If the string is too long we have to terminate it earlier. */
00685             if (terminator == last) {
00686               /* Get the 'begin' of the previous character and make that
00687                * the terminator of the string; we truncate it 'early'. */
00688               *Utf8PrevChar(terminator) = '\0';
00689               len = strlen(str);
00690             }
00691             /* Also move the terminator! */
00692             memmove(str + 1, str, len + 1);
00693             *str = '\0';
00694             /* str needs to point to the character *after* the last space */
00695             str++;
00696           } else {
00697             /* A space is found; perfect place to terminate */
00698             str = last_space;
00699           }
00700           break;
00701         }
00702       } else {
00703         switch (c) {
00704           case '\0': return num + (size << 16);
00705           case SCC_SETX:  str++; break;
00706           case SCC_SETXY: str += 2; break;
00707           case SCC_TINYFONT: size = FS_SMALL; break;
00708           case SCC_BIGFONT:  size = FS_LARGE; break;
00709           case '\n': goto end_of_inner_loop;
00710         }
00711       }
00712     }
00713 end_of_inner_loop:
00714     /* String didn't fit on line (or a '\n' was encountered), so 'dummy' terminate
00715      * and increase linecount. We use Utf8PrevChar() as also non 1 char long
00716      * whitespace seperators are supported */
00717     num++;
00718     char *s = Utf8PrevChar(str);
00719     *s++ = '\0';
00720 
00721     /* In which case (see above) we will shift remainder to left and close the gap */
00722     if (str - s >= 1) {
00723       for (; str[-1] != '\0';) *s++ = *str++;
00724     }
00725   }
00726 }
00727 
00728 
00735 static int GetMultilineStringHeight(const char *src, int num)
00736 {
00737   int maxy = 0;
00738   int y = 0;
00739   int fh = GetCharacterHeight(_cur_fontsize);
00740 
00741   for (;;) {
00742     WChar c = Utf8Consume(&src);
00743 
00744     switch (c) {
00745       case 0:            y += fh; if (--num < 0) return maxy; break;
00746       case '\n':         y += fh;                             break;
00747       case SCC_SETX:     src++;                               break;
00748       case SCC_SETXY:    src++; y = (int)*src++;              break;
00749       case SCC_TINYFONT: fh = GetCharacterHeight(FS_SMALL);   break;
00750       case SCC_BIGFONT:  fh = GetCharacterHeight(FS_LARGE);   break;
00751       default:           maxy = max<int>(maxy, y + fh);       break;
00752     }
00753   }
00754 }
00755 
00756 
00762 int GetStringHeight(StringID str, int maxw)
00763 {
00764   char buffer[DRAW_STRING_BUFFER];
00765 
00766   GetString(buffer, str, lastof(buffer));
00767 
00768   uint32 tmp = FormatStringLinebreaks(buffer, lastof(buffer), maxw);
00769 
00770   return GetMultilineStringHeight(buffer, GB(tmp, 0, 16));
00771 }
00772 
00778 Dimension GetStringMultiLineBoundingBox(StringID str, const Dimension &suggestion)
00779 {
00780   Dimension box = {suggestion.width, GetStringHeight(str, suggestion.width)};
00781   return box;
00782 }
00783 
00800 int DrawStringMultiLine(int left, int right, int top, int bottom, StringID str, TextColour colour, StringAlignment align, bool underline)
00801 {
00802   int maxw = right - left + 1;
00803   int maxh = bottom - top + 1;
00804 
00805   /* It makes no sense to even try if it can't be drawn anyway, or
00806    * do we really want to support fonts of 0 or less pixels high? */
00807   if (maxh <= 0) return top;
00808 
00809   char buffer[DRAW_STRING_BUFFER];
00810   GetString(buffer, str, lastof(buffer));
00811 
00812   uint32 tmp = FormatStringLinebreaks(buffer, lastof(buffer), maxw);
00813   int num = GB(tmp, 0, 16);
00814 
00815   int mt = GetCharacterHeight((FontSize)GB(tmp, 16, 16));
00816   int total_height = (num + 1) * mt;
00817 
00818   if (total_height > maxh) {
00819     /* Check there's room enough for at least one line. */
00820     if (maxh < mt) return top;
00821 
00822     num = maxh / mt - 1;
00823     total_height = (num + 1) * mt;
00824   }
00825 
00826   int y = (align == SA_CENTER) ? (bottom + top - total_height + 1) / 2 : top;
00827   const char *src = buffer;
00828 
00829   for (;;) {
00830     char buf2[DRAW_STRING_BUFFER];
00831     strecpy(buf2, src, lastof(buf2));
00832     DrawString(left, right, y, buf2, lastof(buf2), colour, align, underline, false);
00833     _cur_fontsize = _last_fontsize;
00834 
00835     for (;;) {
00836       WChar c = Utf8Consume(&src);
00837       if (c == 0) {
00838         y += mt;
00839         if (--num < 0) {
00840           _cur_fontsize = FS_NORMAL;
00841           return y;
00842         }
00843         break;
00844       } else if (c == SCC_SETX) {
00845         src++;
00846       } else if (c == SCC_SETXY) {
00847         src += 2;
00848       }
00849     }
00850   }
00851 }
00852 
00860 Dimension GetStringBoundingBox(const char *str)
00861 {
00862   FontSize size = _cur_fontsize;
00863   Dimension br;
00864   uint max_width;
00865   WChar c;
00866 
00867   br.width = br.height = max_width = 0;
00868   for (;;) {
00869     c = Utf8Consume(&str);
00870     if (c == 0) break;
00871     if (IsPrintable(c)) {
00872       br.width += GetCharacterWidth(size, c);
00873     } else {
00874       switch (c) {
00875         case SCC_SETX: br.width = max((uint)*str++, br.width); break;
00876         case SCC_SETXY:
00877           br.width  = max((uint)*str++, br.width);
00878           br.height = max((uint)*str++, br.height);
00879           break;
00880         case SCC_TINYFONT: size = FS_SMALL; break;
00881         case SCC_BIGFONT:  size = FS_LARGE; break;
00882         case '\n':
00883           br.height += GetCharacterHeight(size);
00884           if (br.width > max_width) max_width = br.width;
00885           br.width = 0;
00886           break;
00887       }
00888     }
00889   }
00890   br.height += GetCharacterHeight(size);
00891 
00892   br.width  = max(br.width, max_width);
00893   return br;
00894 }
00895 
00902 Dimension GetStringBoundingBox(StringID strid)
00903 {
00904   char buffer[DRAW_STRING_BUFFER];
00905 
00906   GetString(buffer, strid, lastof(buffer));
00907   return GetStringBoundingBox(buffer);
00908 }
00909 
00917 void DrawCharCentered(WChar c, int x, int y, TextColour colour)
00918 {
00919   SetColourRemap(colour);
00920   GfxMainBlitter(GetGlyph(FS_NORMAL, c), x - GetCharacterWidth(FS_NORMAL, c) / 2, y, BM_COLOUR_REMAP);
00921 }
00922 
00940 static int ReallyDoDrawString(const UChar *string, int x, int y, TextColour &colour, bool parse_string_also_when_clipped)
00941 {
00942   DrawPixelInfo *dpi = _cur_dpi;
00943   FontSize size = _cur_fontsize;
00944   UChar c;
00945   int xo = x;
00946 
00947   TextColour previous_colour = colour;
00948 
00949   if (!parse_string_also_when_clipped) {
00950     /* in "mode multiline", the available space have been verified. Not in regular one.
00951      * So if the string cannot be drawn, return the original start to say so.*/
00952     if (x >= dpi->left + dpi->width || y >= dpi->top + dpi->height) return x;
00953 
00954     if (colour != TC_INVALID) { // the invalid colour flag test should not really occur. But better be safe
00955 switch_colour:;
00956       SetColourRemap(colour);
00957     }
00958   }
00959 
00960 check_bounds:
00961   if (y + _max_char_height <= dpi->top || dpi->top + dpi->height <= y) {
00962 skip_char:;
00963     for (;;) {
00964       c = *string++;
00965       if (!IsPrintable(c)) goto skip_cont;
00966     }
00967   }
00968 
00969   for (;;) {
00970     c = *string++;
00971 skip_cont:;
00972     if (c == 0) {
00973       _last_fontsize = size;
00974       return x;  // Nothing more to draw, get out. And here is the new x position
00975     }
00976     if (IsPrintable(c)) {
00977       if (x >= dpi->left + dpi->width) goto skip_char;
00978       if (x + _max_char_width >= dpi->left) {
00979         GfxMainBlitter(GetGlyph(size, c), x, y, BM_COLOUR_REMAP);
00980       }
00981       x += GetCharacterWidth(size, c);
00982     } else if (c == '\n') { // newline = {}
00983       x = xo;  // We require a new line, so the x coordinate is reset
00984       y += GetCharacterHeight(size);
00985       goto check_bounds;
00986     } else if (c >= SCC_BLUE && c <= SCC_BLACK) { // change colour?
00987       previous_colour = colour;
00988       colour = (TextColour)(c - SCC_BLUE);
00989       goto switch_colour;
00990     } else if (c == SCC_PREVIOUS_COLOUR) { // revert to the previous colour
00991       Swap(colour, previous_colour);
00992       goto switch_colour;
00993     } else if (c == SCC_SETX || c == SCC_SETXY) { // {SETX}/{SETXY}
00994       /* The characters are handled before calling this. */
00995       NOT_REACHED();
00996     } else if (c == SCC_TINYFONT) { // {TINYFONT}
00997       size = FS_SMALL;
00998     } else if (c == SCC_BIGFONT) { // {BIGFONT}
00999       size = FS_LARGE;
01000     } else {
01001       DEBUG(misc, 0, "[utf8] unknown string command character %d", c);
01002     }
01003   }
01004 }
01005 
01012 Dimension GetSpriteSize(SpriteID sprid)
01013 {
01014   const Sprite *sprite = GetSprite(sprid, ST_NORMAL);
01015 
01016   Dimension d;
01017   d.width  = max<int>(0, sprite->x_offs + sprite->width);
01018   d.height = max<int>(0, sprite->y_offs + sprite->height);
01019   return d;
01020 }
01021 
01030 void DrawSprite(SpriteID img, SpriteID pal, int x, int y, const SubSprite *sub)
01031 {
01032   if (HasBit(img, PALETTE_MODIFIER_TRANSPARENT)) {
01033     _colour_remap_ptr = GetNonSprite(GB(pal, 0, PALETTE_WIDTH), ST_RECOLOUR) + 1;
01034     GfxMainBlitter(GetSprite(GB(img, 0, SPRITE_WIDTH), ST_NORMAL), x, y, BM_TRANSPARENT, sub);
01035   } else if (pal != PAL_NONE) {
01036     _colour_remap_ptr = GetNonSprite(GB(pal, 0, PALETTE_WIDTH), ST_RECOLOUR) + 1;
01037     GfxMainBlitter(GetSprite(GB(img, 0, SPRITE_WIDTH), ST_NORMAL), x, y, BM_COLOUR_REMAP, sub);
01038   } else {
01039     GfxMainBlitter(GetSprite(GB(img, 0, SPRITE_WIDTH), ST_NORMAL), x, y, BM_NORMAL, sub);
01040   }
01041 }
01042 
01043 static void GfxMainBlitter(const Sprite *sprite, int x, int y, BlitterMode mode, const SubSprite *sub)
01044 {
01045   const DrawPixelInfo *dpi = _cur_dpi;
01046   Blitter::BlitterParams bp;
01047 
01048   /* Amount of pixels to clip from the source sprite */
01049   int clip_left   = (sub != NULL ? max(0,                   -sprite->x_offs + sub->left       ) : 0);
01050   int clip_top    = (sub != NULL ? max(0,                   -sprite->y_offs + sub->top        ) : 0);
01051   int clip_right  = (sub != NULL ? max(0, sprite->width  - (-sprite->x_offs + sub->right  + 1)) : 0);
01052   int clip_bottom = (sub != NULL ? max(0, sprite->height - (-sprite->y_offs + sub->bottom + 1)) : 0);
01053 
01054   if (clip_left + clip_right >= sprite->width) return;
01055   if (clip_top + clip_bottom >= sprite->height) return;
01056 
01057   /* Move to the correct offset */
01058   x += sprite->x_offs;
01059   y += sprite->y_offs;
01060 
01061   /* Copy the main data directly from the sprite */
01062   bp.sprite = sprite->data;
01063   bp.sprite_width = sprite->width;
01064   bp.sprite_height = sprite->height;
01065   bp.width = UnScaleByZoom(sprite->width - clip_left - clip_right, dpi->zoom);
01066   bp.height = UnScaleByZoom(sprite->height - clip_top - clip_bottom, dpi->zoom);
01067   bp.top = 0;
01068   bp.left = 0;
01069   bp.skip_left = UnScaleByZoomLower(clip_left, dpi->zoom);
01070   bp.skip_top = UnScaleByZoomLower(clip_top, dpi->zoom);
01071 
01072   x += ScaleByZoom(bp.skip_left, dpi->zoom);
01073   y += ScaleByZoom(bp.skip_top, dpi->zoom);
01074 
01075   bp.dst = dpi->dst_ptr;
01076   bp.pitch = dpi->pitch;
01077   bp.remap = _colour_remap_ptr;
01078 
01079   assert(sprite->width > 0);
01080   assert(sprite->height > 0);
01081 
01082   if (bp.width <= 0) return;
01083   if (bp.height <= 0) return;
01084 
01085   y -= dpi->top;
01086   /* Check for top overflow */
01087   if (y < 0) {
01088     bp.height -= -UnScaleByZoom(y, dpi->zoom);
01089     if (bp.height <= 0) return;
01090     bp.skip_top += -UnScaleByZoom(y, dpi->zoom);
01091     y = 0;
01092   } else {
01093     bp.top = UnScaleByZoom(y, dpi->zoom);
01094   }
01095 
01096   /* Check for bottom overflow */
01097   y += ScaleByZoom(bp.height, dpi->zoom) - dpi->height;
01098   if (y > 0) {
01099     bp.height -= UnScaleByZoom(y, dpi->zoom);
01100     if (bp.height <= 0) return;
01101   }
01102 
01103   x -= dpi->left;
01104   /* Check for left overflow */
01105   if (x < 0) {
01106     bp.width -= -UnScaleByZoom(x, dpi->zoom);
01107     if (bp.width <= 0) return;
01108     bp.skip_left += -UnScaleByZoom(x, dpi->zoom);
01109     x = 0;
01110   } else {
01111     bp.left = UnScaleByZoom(x, dpi->zoom);
01112   }
01113 
01114   /* Check for right overflow */
01115   x += ScaleByZoom(bp.width, dpi->zoom) - dpi->width;
01116   if (x > 0) {
01117     bp.width -= UnScaleByZoom(x, dpi->zoom);
01118     if (bp.width <= 0) return;
01119   }
01120 
01121   assert(bp.skip_left + bp.width <= UnScaleByZoom(sprite->width, dpi->zoom));
01122   assert(bp.skip_top + bp.height <= UnScaleByZoom(sprite->height, dpi->zoom));
01123 
01124   BlitterFactoryBase::GetCurrentBlitter()->Draw(&bp, mode, dpi->zoom);
01125 }
01126 
01127 void DoPaletteAnimations();
01128 
01129 void GfxInitPalettes()
01130 {
01131   memcpy(_cur_palette, _palettes[_use_palette], sizeof(_cur_palette));
01132 
01133   DoPaletteAnimations();
01134   _pal_first_dirty = 0;
01135   _pal_count_dirty = 256;
01136 }
01137 
01138 #define EXTR(p, q) (((uint16)(_palette_animation_counter * (p)) * (q)) >> 16)
01139 #define EXTR2(p, q) (((uint16)(~_palette_animation_counter * (p)) * (q)) >> 16)
01140 
01141 void DoPaletteAnimations()
01142 {
01143   Blitter *blitter = BlitterFactoryBase::GetCurrentBlitter();
01144   const Colour *s;
01145   const ExtraPaletteValues *ev = &_extra_palette_values;
01146   /* Amount of colours to be rotated.
01147    * A few more for the DOS palette, because the water colours are
01148    * 245-254 for DOS and 217-226 for Windows.  */
01149   const int colour_rotation_amount = (_use_palette == PAL_DOS) ? PALETTE_ANIM_SIZE_DOS : PALETTE_ANIM_SIZE_WIN;
01150   Colour old_val[PALETTE_ANIM_SIZE_DOS];
01151   const int oldval_size = colour_rotation_amount * sizeof(*old_val);
01152   const uint old_tc = _palette_animation_counter;
01153   uint i;
01154   uint j;
01155 
01156   if (blitter != NULL && blitter->UsePaletteAnimation() == Blitter::PALETTE_ANIMATION_NONE) {
01157     _palette_animation_counter = 0;
01158   }
01159 
01160   Colour *palette_pos = &_cur_palette[PALETTE_ANIM_SIZE_START];  // Points to where animations are taking place on the palette
01161   /* Makes a copy of the current anmation palette in old_val,
01162    * so the work on the current palette could be compared, see if there has been any changes */
01163   memcpy(old_val, palette_pos, oldval_size);
01164 
01165   /* Dark blue water */
01166   s = (_settings_game.game_creation.landscape == LT_TOYLAND) ? ev->dark_water_toyland : ev->dark_water;
01167   j = EXTR(320, EPV_CYCLES_DARK_WATER);
01168   for (i = 0; i != EPV_CYCLES_DARK_WATER; i++) {
01169     *palette_pos++ = s[j];
01170     j++;
01171     if (j == EPV_CYCLES_DARK_WATER) j = 0;
01172   }
01173 
01174   /* Glittery water; jumps over 3 colours each cycle! */
01175   s = (_settings_game.game_creation.landscape == LT_TOYLAND) ? ev->glitter_water_toyland : ev->glitter_water;
01176   j = EXTR(128, EPV_CYCLES_GLITTER_WATER);
01177   for (i = 0; i != EPV_CYCLES_GLITTER_WATER / 3; i++) {
01178     *palette_pos++ = s[j];
01179     j += 3;
01180     if (j >= EPV_CYCLES_GLITTER_WATER) j -= EPV_CYCLES_GLITTER_WATER;
01181   }
01182 
01183   /* Fizzy Drink bubbles animation */
01184   s = ev->fizzy_drink;
01185   j = EXTR2(512, EPV_CYCLES_FIZZY_DRINK);
01186   for (i = 0; i != EPV_CYCLES_FIZZY_DRINK; i++) {
01187     *palette_pos++ = s[j];
01188     j++;
01189     if (j == EPV_CYCLES_FIZZY_DRINK) j = 0;
01190   }
01191 
01192   /* Oil refinery fire animation */
01193   s = ev->oil_refinery;
01194   j = EXTR2(512, EPV_CYCLES_OIL_REFINERY);
01195   for (i = 0; i != EPV_CYCLES_OIL_REFINERY; i++) {
01196     *palette_pos++ = s[j];
01197     j++;
01198     if (j == EPV_CYCLES_OIL_REFINERY) j = 0;
01199   }
01200 
01201   /* Radio tower blinking */
01202   {
01203     byte i = (_palette_animation_counter >> 1) & 0x7F;
01204     byte v;
01205 
01206     if (i < 0x3f) {
01207       v = 255;
01208     } else if (i < 0x4A || i >= 0x75) {
01209       v = 128;
01210     } else {
01211       v = 20;
01212     }
01213     palette_pos->r = v;
01214     palette_pos->g = 0;
01215     palette_pos->b = 0;
01216     palette_pos++;
01217 
01218     i ^= 0x40;
01219     if (i < 0x3f) {
01220       v = 255;
01221     } else if (i < 0x4A || i >= 0x75) {
01222       v = 128;
01223     } else {
01224       v = 20;
01225     }
01226     palette_pos->r = v;
01227     palette_pos->g = 0;
01228     palette_pos->b = 0;
01229     palette_pos++;
01230   }
01231 
01232   /* Handle lighthouse and stadium animation */
01233   s = ev->lighthouse;
01234   j = EXTR(256, EPV_CYCLES_LIGHTHOUSE);
01235   for (i = 0; i != EPV_CYCLES_LIGHTHOUSE; i++) {
01236     *palette_pos++ = s[j];
01237     j++;
01238     if (j == EPV_CYCLES_LIGHTHOUSE) j = 0;
01239   }
01240 
01241   /* Animate water for old DOS graphics */
01242   if (_use_palette == PAL_DOS) {
01243     /* Dark blue water DOS */
01244     s = (_settings_game.game_creation.landscape == LT_TOYLAND) ? ev->dark_water_toyland : ev->dark_water;
01245     j = EXTR(320, EPV_CYCLES_DARK_WATER);
01246     for (i = 0; i != EPV_CYCLES_DARK_WATER; i++) {
01247       *palette_pos++ = s[j];
01248       j++;
01249       if (j == EPV_CYCLES_DARK_WATER) j = 0;
01250     }
01251 
01252     /* Glittery water DOS */
01253     s = (_settings_game.game_creation.landscape == LT_TOYLAND) ? ev->glitter_water_toyland : ev->glitter_water;
01254     j = EXTR(128, EPV_CYCLES_GLITTER_WATER);
01255     for (i = 0; i != EPV_CYCLES_GLITTER_WATER / 3; i++) {
01256       *palette_pos++ = s[j];
01257       j += 3;
01258       if (j >= EPV_CYCLES_GLITTER_WATER) j -= EPV_CYCLES_GLITTER_WATER;
01259     }
01260   }
01261 
01262   if (blitter != NULL && blitter->UsePaletteAnimation() == Blitter::PALETTE_ANIMATION_NONE) {
01263     _palette_animation_counter = old_tc;
01264   } else {
01265     if (memcmp(old_val, &_cur_palette[PALETTE_ANIM_SIZE_START], oldval_size) != 0) {
01266       /* Did we changed anything on the palette? Seems so.  Mark it as dirty */
01267       _pal_first_dirty = PALETTE_ANIM_SIZE_START;
01268       _pal_count_dirty = colour_rotation_amount;
01269     }
01270   }
01271 }
01272 
01273 
01275 void LoadStringWidthTable()
01276 {
01277   _max_char_height = 0;
01278   _max_char_width  = 0;
01279 
01280   for (FontSize fs = FS_BEGIN; fs < FS_END; fs++) {
01281     _max_char_height = max<int>(_max_char_height, GetCharacterHeight(fs));
01282     for (uint i = 0; i != 224; i++) {
01283       _stringwidth_table[fs][i] = GetGlyphWidth(fs, i + 32);
01284       _max_char_width = max<int>(_max_char_width, _stringwidth_table[fs][i]);
01285     }
01286   }
01287 
01288   /* Needed because they need to be 1 more than the widest. */
01289   _max_char_height++;
01290   _max_char_width++;
01291 
01292   ReInitAllWindows();
01293 }
01294 
01301 byte GetCharacterWidth(FontSize size, WChar key)
01302 {
01303   /* Use _stringwidth_table cache if possible */
01304   if (key >= 32 && key < 256) return _stringwidth_table[size][key - 32];
01305 
01306   return GetGlyphWidth(size, key);
01307 }
01308 
01314 byte GetDigitWidth(FontSize size)
01315 {
01316   byte width = 0;
01317   for (char c = '0'; c <= '9'; c++) {
01318     width = max(GetCharacterWidth(size, c), width);
01319   }
01320   return width;
01321 }
01322 
01323 
01324 void ScreenSizeChanged()
01325 {
01326   _dirty_bytes_per_line = (_screen.width + DIRTY_BLOCK_WIDTH - 1) / DIRTY_BLOCK_WIDTH;
01327   _dirty_blocks = ReallocT<byte>(_dirty_blocks, _dirty_bytes_per_line * ((_screen.height + DIRTY_BLOCK_HEIGHT - 1) / DIRTY_BLOCK_HEIGHT));
01328 
01329   /* check the dirty rect */
01330   if (_invalid_rect.right >= _screen.width) _invalid_rect.right = _screen.width;
01331   if (_invalid_rect.bottom >= _screen.height) _invalid_rect.bottom = _screen.height;
01332 
01333   /* screen size changed and the old bitmap is invalid now, so we don't want to undraw it */
01334   _cursor.visible = false;
01335 }
01336 
01337 void UndrawMouseCursor()
01338 {
01339   /* Don't undraw the mouse cursor if the screen is not ready */
01340   if (_screen.dst_ptr == NULL) return;
01341 
01342   if (_cursor.visible) {
01343     Blitter *blitter = BlitterFactoryBase::GetCurrentBlitter();
01344     _cursor.visible = false;
01345     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);
01346     _video_driver->MakeDirty(_cursor.draw_pos.x, _cursor.draw_pos.y, _cursor.draw_size.x, _cursor.draw_size.y);
01347   }
01348 }
01349 
01350 void DrawMouseCursor()
01351 {
01352 #if defined(WINCE)
01353   /* Don't ever draw the mouse for WinCE, as we work with a stylus */
01354   return;
01355 #endif
01356 
01357   /* Don't draw the mouse cursor if the screen is not ready */
01358   if (_screen.dst_ptr == NULL) return;
01359 
01360   Blitter *blitter = BlitterFactoryBase::GetCurrentBlitter();
01361   int x;
01362   int y;
01363   int w;
01364   int h;
01365 
01366   /* Redraw mouse cursor but only when it's inside the window */
01367   if (!_cursor.in_window) return;
01368 
01369   /* Don't draw the mouse cursor if it's already drawn */
01370   if (_cursor.visible) {
01371     if (!_cursor.dirty) return;
01372     UndrawMouseCursor();
01373   }
01374 
01375   w = _cursor.size.x;
01376   x = _cursor.pos.x + _cursor.offs.x + _cursor.short_vehicle_offset;
01377   if (x < 0) {
01378     w += x;
01379     x = 0;
01380   }
01381   if (w > _screen.width - x) w = _screen.width - x;
01382   if (w <= 0) return;
01383   _cursor.draw_pos.x = x;
01384   _cursor.draw_size.x = w;
01385 
01386   h = _cursor.size.y;
01387   y = _cursor.pos.y + _cursor.offs.y;
01388   if (y < 0) {
01389     h += y;
01390     y = 0;
01391   }
01392   if (h > _screen.height - y) h = _screen.height - y;
01393   if (h <= 0) return;
01394   _cursor.draw_pos.y = y;
01395   _cursor.draw_size.y = h;
01396 
01397   uint8 *buffer = _cursor_backup.Allocate(blitter->BufferSize(w, h));
01398 
01399   /* Make backup of stuff below cursor */
01400   blitter->CopyToBuffer(blitter->MoveTo(_screen.dst_ptr, _cursor.draw_pos.x, _cursor.draw_pos.y), buffer, _cursor.draw_size.x, _cursor.draw_size.y);
01401 
01402   /* Draw cursor on screen */
01403   _cur_dpi = &_screen;
01404   DrawSprite(_cursor.sprite, _cursor.pal, _cursor.pos.x + _cursor.short_vehicle_offset, _cursor.pos.y);
01405 
01406   _video_driver->MakeDirty(_cursor.draw_pos.x, _cursor.draw_pos.y, _cursor.draw_size.x, _cursor.draw_size.y);
01407 
01408   _cursor.visible = true;
01409   _cursor.dirty = false;
01410 }
01411 
01412 void RedrawScreenRect(int left, int top, int right, int bottom)
01413 {
01414   assert(right <= _screen.width && bottom <= _screen.height);
01415   if (_cursor.visible) {
01416     if (right > _cursor.draw_pos.x &&
01417         left < _cursor.draw_pos.x + _cursor.draw_size.x &&
01418         bottom > _cursor.draw_pos.y &&
01419         top < _cursor.draw_pos.y + _cursor.draw_size.y) {
01420       UndrawMouseCursor();
01421     }
01422   }
01423 
01424 #ifdef ENABLE_NETWORK
01425   NetworkUndrawChatMessage();
01426 #endif /* ENABLE_NETWORK */
01427 
01428   DrawOverlappedWindowForAll(left, top, right, bottom);
01429 
01430   _video_driver->MakeDirty(left, top, right - left, bottom - top);
01431 }
01432 
01438 void DrawDirtyBlocks()
01439 {
01440   byte *b = _dirty_blocks;
01441   const int w = Align(_screen.width,  DIRTY_BLOCK_WIDTH);
01442   const int h = Align(_screen.height, DIRTY_BLOCK_HEIGHT);
01443   int x;
01444   int y;
01445 
01446   if (IsGeneratingWorld()) {
01447     /* We are generating the world, so release our rights to the map and
01448      * painting while we are waiting a bit. */
01449     _genworld_paint_mutex->EndCritical();
01450     _genworld_mapgen_mutex->EndCritical();
01451 
01452     /* Wait a while and update _realtime_tick so we are given the rights */
01453     CSleep(GENWORLD_REDRAW_TIMEOUT);
01454     _realtime_tick += GENWORLD_REDRAW_TIMEOUT;
01455     _genworld_paint_mutex->BeginCritical();
01456     _genworld_mapgen_mutex->BeginCritical();
01457   }
01458 
01459   y = 0;
01460   do {
01461     x = 0;
01462     do {
01463       if (*b != 0) {
01464         int left;
01465         int top;
01466         int right = x + DIRTY_BLOCK_WIDTH;
01467         int bottom = y;
01468         byte *p = b;
01469         int h2;
01470 
01471         /* First try coalescing downwards */
01472         do {
01473           *p = 0;
01474           p += _dirty_bytes_per_line;
01475           bottom += DIRTY_BLOCK_HEIGHT;
01476         } while (bottom != h && *p != 0);
01477 
01478         /* Try coalescing to the right too. */
01479         h2 = (bottom - y) / DIRTY_BLOCK_HEIGHT;
01480         assert(h2 > 0);
01481         p = b;
01482 
01483         while (right != w) {
01484           byte *p2 = ++p;
01485           int h = h2;
01486           /* Check if a full line of dirty flags is set. */
01487           do {
01488             if (!*p2) goto no_more_coalesc;
01489             p2 += _dirty_bytes_per_line;
01490           } while (--h != 0);
01491 
01492           /* Wohoo, can combine it one step to the right!
01493            * Do that, and clear the bits. */
01494           right += DIRTY_BLOCK_WIDTH;
01495 
01496           h = h2;
01497           p2 = p;
01498           do {
01499             *p2 = 0;
01500             p2 += _dirty_bytes_per_line;
01501           } while (--h != 0);
01502         }
01503         no_more_coalesc:
01504 
01505         left = x;
01506         top = y;
01507 
01508         if (left   < _invalid_rect.left  ) left   = _invalid_rect.left;
01509         if (top    < _invalid_rect.top   ) top    = _invalid_rect.top;
01510         if (right  > _invalid_rect.right ) right  = _invalid_rect.right;
01511         if (bottom > _invalid_rect.bottom) bottom = _invalid_rect.bottom;
01512 
01513         if (left < right && top < bottom) {
01514           RedrawScreenRect(left, top, right, bottom);
01515         }
01516 
01517       }
01518     } while (b++, (x += DIRTY_BLOCK_WIDTH) != w);
01519   } while (b += -(w / DIRTY_BLOCK_WIDTH) + _dirty_bytes_per_line, (y += DIRTY_BLOCK_HEIGHT) != h);
01520 
01521   _invalid_rect.left = w;
01522   _invalid_rect.top = h;
01523   _invalid_rect.right = 0;
01524   _invalid_rect.bottom = 0;
01525 }
01526 
01542 void SetDirtyBlocks(int left, int top, int right, int bottom)
01543 {
01544   byte *b;
01545   int width;
01546   int height;
01547 
01548   if (left < 0) left = 0;
01549   if (top < 0) top = 0;
01550   if (right > _screen.width) right = _screen.width;
01551   if (bottom > _screen.height) bottom = _screen.height;
01552 
01553   if (left >= right || top >= bottom) return;
01554 
01555   if (left   < _invalid_rect.left  ) _invalid_rect.left   = left;
01556   if (top    < _invalid_rect.top   ) _invalid_rect.top    = top;
01557   if (right  > _invalid_rect.right ) _invalid_rect.right  = right;
01558   if (bottom > _invalid_rect.bottom) _invalid_rect.bottom = bottom;
01559 
01560   left /= DIRTY_BLOCK_WIDTH;
01561   top  /= DIRTY_BLOCK_HEIGHT;
01562 
01563   b = _dirty_blocks + top * _dirty_bytes_per_line + left;
01564 
01565   width  = ((right  - 1) / DIRTY_BLOCK_WIDTH)  - left + 1;
01566   height = ((bottom - 1) / DIRTY_BLOCK_HEIGHT) - top  + 1;
01567 
01568   assert(width > 0 && height > 0);
01569 
01570   do {
01571     int i = width;
01572 
01573     do b[--i] = 0xFF; while (i);
01574 
01575     b += _dirty_bytes_per_line;
01576   } while (--height != 0);
01577 }
01578 
01584 void MarkWholeScreenDirty()
01585 {
01586   SetDirtyBlocks(0, 0, _screen.width, _screen.height);
01587 }
01588 
01601 bool FillDrawPixelInfo(DrawPixelInfo *n, int left, int top, int width, int height)
01602 {
01603   Blitter *blitter = BlitterFactoryBase::GetCurrentBlitter();
01604   const DrawPixelInfo *o = _cur_dpi;
01605 
01606   n->zoom = ZOOM_LVL_NORMAL;
01607 
01608   assert(width > 0);
01609   assert(height > 0);
01610 
01611   if ((left -= o->left) < 0) {
01612     width += left;
01613     if (width <= 0) return false;
01614     n->left = -left;
01615     left = 0;
01616   } else {
01617     n->left = 0;
01618   }
01619 
01620   if (width > o->width - left) {
01621     width = o->width - left;
01622     if (width <= 0) return false;
01623   }
01624   n->width = width;
01625 
01626   if ((top -= o->top) < 0) {
01627     height += top;
01628     if (height <= 0) return false;
01629     n->top = -top;
01630     top = 0;
01631   } else {
01632     n->top = 0;
01633   }
01634 
01635   n->dst_ptr = blitter->MoveTo(o->dst_ptr, left, top);
01636   n->pitch = o->pitch;
01637 
01638   if (height > o->height - top) {
01639     height = o->height - top;
01640     if (height <= 0) return false;
01641   }
01642   n->height = height;
01643 
01644   return true;
01645 }
01646 
01647 static void SetCursorSprite(SpriteID cursor, SpriteID pal)
01648 {
01649   CursorVars *cv = &_cursor;
01650   const Sprite *p;
01651 
01652   if (cv->sprite == cursor) return;
01653 
01654   p = GetSprite(GB(cursor, 0, SPRITE_WIDTH), ST_NORMAL);
01655   cv->sprite = cursor;
01656   cv->pal    = pal;
01657   cv->size.y = p->height;
01658   cv->size.x = p->width;
01659   cv->offs.x = p->x_offs;
01660   cv->offs.y = p->y_offs;
01661 
01662   cv->dirty = true;
01663   cv->short_vehicle_offset = 0;
01664 }
01665 
01666 static void SwitchAnimatedCursor()
01667 {
01668   const AnimCursor *cur = _cursor.animate_cur;
01669 
01670   if (cur == NULL || cur->sprite == AnimCursor::LAST) cur = _cursor.animate_list;
01671 
01672   SetCursorSprite(cur->sprite, _cursor.pal);
01673 
01674   _cursor.animate_timeout = cur->display_time;
01675   _cursor.animate_cur     = cur + 1;
01676 }
01677 
01678 void CursorTick()
01679 {
01680   if (_cursor.animate_timeout != 0 && --_cursor.animate_timeout == 0)
01681     SwitchAnimatedCursor();
01682 }
01683 
01684 void SetMouseCursor(SpriteID sprite, SpriteID pal)
01685 {
01686   /* Turn off animation */
01687   _cursor.animate_timeout = 0;
01688   /* Set cursor */
01689   SetCursorSprite(sprite, pal);
01690 }
01691 
01692 void SetAnimatedMouseCursor(const AnimCursor *table)
01693 {
01694   _cursor.animate_list = table;
01695   _cursor.animate_cur = NULL;
01696   _cursor.pal = PAL_NONE;
01697   SwitchAnimatedCursor();
01698 }
01699 
01700 bool ChangeResInGame(int width, int height)
01701 {
01702   return (_screen.width == width && _screen.height == height) || _video_driver->ChangeResolution(width, height);
01703 }
01704 
01705 bool ToggleFullScreen(bool fs)
01706 {
01707   bool result = _video_driver->ToggleFullscreen(fs);
01708   if (_fullscreen != fs && _num_resolutions == 0) {
01709     DEBUG(driver, 0, "Could not find a suitable fullscreen resolution");
01710   }
01711   return result;
01712 }
01713 
01714 static int CDECL compare_res(const Dimension *pa, const Dimension *pb)
01715 {
01716   int x = pa->width - pb->width;
01717   if (x != 0) return x;
01718   return pa->height - pb->height;
01719 }
01720 
01721 void SortResolutions(int count)
01722 {
01723   QSortT(_resolutions, count, &compare_res);
01724 }

Generated on Wed Dec 23 23:27:50 2009 for OpenTTD by  doxygen 1.5.6