gfx.cpp

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00001 /* $Id$ */
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 "fontcache.h"
00015 #include "progress.h"
00016 #include "zoom_func.h"
00017 #include "blitter/factory.hpp"
00018 #include "video/video_driver.hpp"
00019 #include "strings_func.h"
00020 #include "settings_type.h"
00021 #include "network/network.h"
00022 #include "network/network_func.h"
00023 #include "window_func.h"
00024 #include "newgrf_debug.h"
00025 
00026 #include "table/palettes.h"
00027 #include "table/sprites.h"
00028 #include "table/control_codes.h"
00029 
00030 byte _dirkeys;        
00031 bool _fullscreen;
00032 CursorVars _cursor;
00033 bool _ctrl_pressed;   
00034 bool _shift_pressed;  
00035 byte _fast_forward;
00036 bool _left_button_down;     
00037 bool _left_button_clicked;  
00038 bool _right_button_down;    
00039 bool _right_button_clicked; 
00040 DrawPixelInfo _screen;
00041 bool _screen_disable_anim = false;   
00042 bool _exit_game;
00043 GameMode _game_mode;
00044 SwitchMode _switch_mode;  
00045 PauseModeByte _pause_mode;
00046 Palette _cur_palette;
00047 
00048 static int _max_char_height; 
00049 static int _max_char_width;  
00050 static byte _stringwidth_table[FS_END][224]; 
00051 DrawPixelInfo *_cur_dpi;
00052 byte _colour_gradient[COLOUR_END][8];
00053 
00054 static void GfxMainBlitterViewport(const Sprite *sprite, int x, int y, BlitterMode mode, const SubSprite *sub = NULL, SpriteID sprite_id = SPR_CURSOR_MOUSE);
00055 static void GfxMainBlitter(const Sprite *sprite, int x, int y, BlitterMode mode, const SubSprite *sub = NULL, SpriteID sprite_id = SPR_CURSOR_MOUSE, ZoomLevel zoom = ZOOM_LVL_NORMAL);
00056 
00061 struct DrawStringParams {
00062   FontSize fontsize;
00063   TextColour cur_colour, prev_colour;
00064 
00065   DrawStringParams(TextColour colour, FontSize fontsize) : fontsize(fontsize), cur_colour(colour), prev_colour(colour) {}
00066 
00071   inline void SetColour(TextColour c)
00072   {
00073     assert(c >=  TC_BLUE && c <= TC_BLACK);
00074     this->prev_colour = this->cur_colour;
00075     this->cur_colour = c;
00076   }
00077 
00079   inline void SetPreviousColour()
00080   {
00081     Swap(this->cur_colour, this->prev_colour);
00082   }
00083 
00088   inline void SetFontSize(FontSize f)
00089   {
00090     this->fontsize = f;
00091   }
00092 };
00093 
00094 static ReusableBuffer<uint8> _cursor_backup;
00095 
00103 static Rect _invalid_rect;
00104 static const byte *_colour_remap_ptr;
00105 static byte _string_colourremap[3]; 
00106 
00107 static const uint DIRTY_BLOCK_HEIGHT   = 8;
00108 static const uint DIRTY_BLOCK_WIDTH    = 64;
00109 
00110 static uint _dirty_bytes_per_line = 0;
00111 static byte *_dirty_blocks = NULL;
00112 
00113 void GfxScroll(int left, int top, int width, int height, int xo, int yo)
00114 {
00115   Blitter *blitter = BlitterFactoryBase::GetCurrentBlitter();
00116 
00117   if (xo == 0 && yo == 0) return;
00118 
00119   if (_cursor.visible) UndrawMouseCursor();
00120 
00121 #ifdef ENABLE_NETWORK
00122   if (_networking) NetworkUndrawChatMessage();
00123 #endif /* ENABLE_NETWORK */
00124 
00125   blitter->ScrollBuffer(_screen.dst_ptr, left, top, width, height, xo, yo);
00126   /* This part of the screen is now dirty. */
00127   _video_driver->MakeDirty(left, top, width, height);
00128 }
00129 
00130 
00145 void GfxFillRect(int left, int top, int right, int bottom, int colour, FillRectMode mode)
00146 {
00147   Blitter *blitter = BlitterFactoryBase::GetCurrentBlitter();
00148   const DrawPixelInfo *dpi = _cur_dpi;
00149   void *dst;
00150   const int otop = top;
00151   const int oleft = left;
00152 
00153   if (dpi->zoom != ZOOM_LVL_NORMAL) return;
00154   if (left > right || top > bottom) return;
00155   if (right < dpi->left || left >= dpi->left + dpi->width) return;
00156   if (bottom < dpi->top || top >= dpi->top + dpi->height) return;
00157 
00158   if ( (left -= dpi->left) < 0) left = 0;
00159   right = right - dpi->left + 1;
00160   if (right > dpi->width) right = dpi->width;
00161   right -= left;
00162   assert(right > 0);
00163 
00164   if ( (top -= dpi->top) < 0) top = 0;
00165   bottom = bottom - dpi->top + 1;
00166   if (bottom > dpi->height) bottom = dpi->height;
00167   bottom -= top;
00168   assert(bottom > 0);
00169 
00170   dst = blitter->MoveTo(dpi->dst_ptr, left, top);
00171 
00172   switch (mode) {
00173     default: // FILLRECT_OPAQUE
00174       blitter->DrawRect(dst, right, bottom, (uint8)colour);
00175       break;
00176 
00177     case FILLRECT_RECOLOUR:
00178       blitter->DrawColourMappingRect(dst, right, bottom, GB(colour, 0, PALETTE_WIDTH));
00179       break;
00180 
00181     case FILLRECT_CHECKER: {
00182       byte bo = (oleft - left + dpi->left + otop - top + dpi->top) & 1;
00183       do {
00184         for (int i = (bo ^= 1); i < right; i += 2) blitter->SetPixel(dst, i, 0, (uint8)colour);
00185         dst = blitter->MoveTo(dst, 0, 1);
00186       } while (--bottom > 0);
00187       break;
00188     }
00189   }
00190 }
00191 
00192 void GfxDrawLine(int x, int y, int x2, int y2, int colour, int width)
00193 {
00194   Blitter *blitter = BlitterFactoryBase::GetCurrentBlitter();
00195   DrawPixelInfo *dpi = _cur_dpi;
00196 
00197   assert(width > 0);
00198 
00199   x -= dpi->left;
00200   x2 -= dpi->left;
00201   y -= dpi->top;
00202   y2 -= dpi->top;
00203 
00204   /* Check clipping */
00205   if (x + width / 2 < 0           && x2 + width / 2 < 0          ) return;
00206   if (y + width / 2 < 0           && y2 + width / 2 < 0          ) return;
00207   if (x - width / 2 > dpi->width  && x2 - width / 2 > dpi->width ) return;
00208   if (y - width / 2 > dpi->height && y2 - width / 2 > dpi->height) return;
00209 
00210   blitter->DrawLine(dpi->dst_ptr, x, y, x2, y2, dpi->width, dpi->height, colour, width);
00211 }
00212 
00213 void GfxDrawLineUnscaled(int x, int y, int x2, int y2, int colour)
00214 {
00215   Blitter *blitter = BlitterFactoryBase::GetCurrentBlitter();
00216   DrawPixelInfo *dpi = _cur_dpi;
00217 
00218   x -= dpi->left;
00219   x2 -= dpi->left;
00220   y -= dpi->top;
00221   y2 -= dpi->top;
00222 
00223   /* Check clipping */
00224   if (x < 0 && x2 < 0) return;
00225   if (y < 0 && y2 < 0) return;
00226   if (x > dpi->width  && x2 > dpi->width)  return;
00227   if (y > dpi->height && y2 > dpi->height) return;
00228 
00229   blitter->DrawLine(dpi->dst_ptr, UnScaleByZoom(x, dpi->zoom), UnScaleByZoom(y, dpi->zoom),
00230       UnScaleByZoom(x2, dpi->zoom), UnScaleByZoom(y2, dpi->zoom),
00231       UnScaleByZoom(dpi->width, dpi->zoom), UnScaleByZoom(dpi->height, dpi->zoom), colour, 1);
00232 }
00233 
00247 void DrawBox(int x, int y, int dx1, int dy1, int dx2, int dy2, int dx3, int dy3)
00248 {
00249   /*           ....
00250    *         ..    ....
00251    *       ..          ....
00252    *     ..                ^
00253    *   <--__(dx1,dy1)    /(dx2,dy2)
00254    *   :    --__       /   :
00255    *   :        --__ /     :
00256    *   :            *(x,y) :
00257    *   :            |      :
00258    *   :            |     ..
00259    *    ....        |(dx3,dy3)
00260    *        ....    | ..
00261    *            ....V.
00262    */
00263 
00264   static const byte colour = PC_WHITE;
00265 
00266   GfxDrawLineUnscaled(x, y, x + dx1, y + dy1, colour);
00267   GfxDrawLineUnscaled(x, y, x + dx2, y + dy2, colour);
00268   GfxDrawLineUnscaled(x, y, x + dx3, y + dy3, colour);
00269 
00270   GfxDrawLineUnscaled(x + dx1, y + dy1, x + dx1 + dx2, y + dy1 + dy2, colour);
00271   GfxDrawLineUnscaled(x + dx1, y + dy1, x + dx1 + dx3, y + dy1 + dy3, colour);
00272   GfxDrawLineUnscaled(x + dx2, y + dy2, x + dx2 + dx1, y + dy2 + dy1, colour);
00273   GfxDrawLineUnscaled(x + dx2, y + dy2, x + dx2 + dx3, y + dy2 + dy3, colour);
00274   GfxDrawLineUnscaled(x + dx3, y + dy3, x + dx3 + dx1, y + dy3 + dy1, colour);
00275   GfxDrawLineUnscaled(x + dx3, y + dy3, x + dx3 + dx2, y + dy3 + dy2, colour);
00276 }
00277 
00282 static void SetColourRemap(TextColour colour)
00283 {
00284   if (colour == TC_INVALID) return;
00285 
00286   /* Black strings have no shading ever; the shading is black, so it
00287    * would be invisible at best, but it actually makes it illegible. */
00288   bool no_shade   = (colour & TC_NO_SHADE) != 0 || colour == TC_BLACK;
00289   bool raw_colour = (colour & TC_IS_PALETTE_COLOUR) != 0;
00290   colour &= ~(TC_NO_SHADE | TC_IS_PALETTE_COLOUR);
00291 
00292   _string_colourremap[1] = raw_colour ? (byte)colour : _string_colourmap[colour];
00293   _string_colourremap[2] = no_shade ? 0 : 1;
00294   _colour_remap_ptr = _string_colourremap;
00295 }
00296 
00297 #if !defined(WITH_ICU)
00298 typedef WChar UChar;
00299 static UChar *HandleBiDiAndArabicShapes(UChar *text) { return text; }
00300 #else
00301 #include <unicode/ubidi.h>
00302 #include <unicode/ushape.h>
00303 
00333 static UChar *HandleBiDiAndArabicShapes(UChar *buffer)
00334 {
00335   static UChar input_output[DRAW_STRING_BUFFER];
00336   UChar intermediate[DRAW_STRING_BUFFER];
00337 
00338   UChar *t = buffer;
00339   size_t length = 0;
00340   while (*t != '\0' && length < lengthof(input_output) - 1) {
00341     input_output[length++] = *t++;
00342   }
00343   input_output[length] = 0;
00344 
00345   UErrorCode err = U_ZERO_ERROR;
00346   UBiDi *para = ubidi_openSized((int32_t)length, 0, &err);
00347   if (para == NULL) return buffer;
00348 
00349   ubidi_setPara(para, input_output, (int32_t)length, _current_text_dir == TD_RTL ? UBIDI_DEFAULT_RTL : UBIDI_DEFAULT_LTR, NULL, &err);
00350   ubidi_writeReordered(para, intermediate, (int32_t)length, UBIDI_REMOVE_BIDI_CONTROLS, &err);
00351   length = u_shapeArabic(intermediate, (int32_t)length, input_output, lengthof(input_output), U_SHAPE_TEXT_DIRECTION_VISUAL_LTR | U_SHAPE_LETTERS_SHAPE, &err);
00352   ubidi_close(para);
00353 
00354   if (U_FAILURE(err)) return buffer;
00355 
00356   input_output[length] = '\0';
00357   return input_output;
00358 }
00359 #endif /* WITH_ICU */
00360 
00361 
00371 static int TruncateString(char *str, int maxw, bool ignore_setxy, FontSize start_fontsize)
00372 {
00373   int w = 0;
00374   FontSize size = start_fontsize;
00375   int ddd, ddd_w;
00376 
00377   WChar c;
00378   char *ddd_pos;
00379 
00380   ddd_w = ddd = GetCharacterWidth(size, '.') * 3;
00381 
00382   for (ddd_pos = str; (c = Utf8Consume(const_cast<const char **>(&str))) != '\0'; ) {
00383     if (IsPrintable(c) && !IsTextDirectionChar(c)) {
00384       w += GetCharacterWidth(size, c);
00385 
00386       if (w > maxw) {
00387         /* string got too big... insert dotdotdot, but make sure we do not
00388          * print anything beyond the string termination character. */
00389         for (int i = 0; *ddd_pos != '\0' && i < 3; i++, ddd_pos++) *ddd_pos = '.';
00390         *ddd_pos = '\0';
00391         return ddd_w;
00392       }
00393     } else {
00394       if (c == SCC_SETX) {
00395         if (!ignore_setxy) w = *str;
00396         str++;
00397       } else if (c == SCC_SETXY) {
00398         if (!ignore_setxy) w = *str;
00399         str += 2;
00400       } else if (c == SCC_TINYFONT) {
00401         size = FS_SMALL;
00402         ddd = GetCharacterWidth(size, '.') * 3;
00403       } else if (c == SCC_BIGFONT) {
00404         size = FS_LARGE;
00405         ddd = GetCharacterWidth(size, '.') * 3;
00406       } else if (c == '\n') {
00407         DEBUG(misc, 0, "Drawing string using newlines with DrawString instead of DrawStringMultiLine. Please notify the developers of this: [%s]", str);
00408       }
00409     }
00410 
00411     /* Remember the last position where three dots fit. */
00412     if (w + ddd < maxw) {
00413       ddd_w = w + ddd;
00414       ddd_pos = str;
00415     }
00416   }
00417 
00418   return w;
00419 }
00420 
00421 static int ReallyDoDrawString(const UChar *string, int x, int y, DrawStringParams &params, bool parse_string_also_when_clipped = false);
00422 
00429 static int GetStringWidth(const UChar *str, FontSize start_fontsize)
00430 {
00431   FontSize size = start_fontsize;
00432   int max_width;
00433   int width;
00434   WChar c;
00435 
00436   width = max_width = 0;
00437   for (;;) {
00438     c = *str++;
00439     if (c == 0) break;
00440     if (IsPrintable(c) && !IsTextDirectionChar(c)) {
00441       width += GetCharacterWidth(size, c);
00442     } else {
00443       switch (c) {
00444         case SCC_SETX:
00445         case SCC_SETXY:
00446           /* At this point there is no SCC_SETX(Y) anymore */
00447           NOT_REACHED();
00448           break;
00449         case SCC_TINYFONT: size = FS_SMALL; break;
00450         case SCC_BIGFONT:  size = FS_LARGE; break;
00451         case '\n':
00452           max_width = max(max_width, width);
00453           break;
00454       }
00455     }
00456   }
00457 
00458   return max(max_width, width);
00459 }
00460 
00479 static int DrawString(int left, int right, int top, char *str, const char *last, DrawStringParams &params, StringAlignment align, bool underline = false, bool truncate = true)
00480 {
00481   /* We need the outer limits of both left/right */
00482   int min_left = INT32_MAX;
00483   int max_right = INT32_MIN;
00484 
00485   int initial_left = left;
00486   int initial_right = right;
00487   int initial_top = top;
00488 
00489   if (truncate) TruncateString(str, right - left + 1, (align & SA_STRIP) == SA_STRIP, params.fontsize);
00490 
00491   /*
00492    * To support SETX and SETXY properly with RTL languages we have to
00493    * calculate the offsets from the right. To do this we need to split
00494    * the string and draw the parts separated by SETX(Y).
00495    * So here we split
00496    */
00497   static SmallVector<UChar *, 4> setx_offsets;
00498   setx_offsets.Clear();
00499 
00500   UChar draw_buffer[DRAW_STRING_BUFFER];
00501   UChar *p = draw_buffer;
00502 
00503   *setx_offsets.Append() = p;
00504 
00505   char *loc = str;
00506   for (;;) {
00507     WChar c;
00508     /* We cannot use Utf8Consume as we need the location of the SETX(Y) */
00509     size_t len = Utf8Decode(&c, loc);
00510     *p++ = c;
00511 
00512     if (c == '\0') break;
00513     if (p >= lastof(draw_buffer) - 3) {
00514       /* Make sure we never overflow (even if copying SCC_SETX(Y)). */
00515       *p = '\0';
00516       break;
00517     }
00518     if (c != SCC_SETX && c != SCC_SETXY) {
00519       loc += len;
00520       continue;
00521     }
00522 
00523     if (align & SA_STRIP) {
00524       /* We do not want to keep the SETX(Y)!. It was already copied, so
00525        * remove it and undo the incrementing of the pointer! */
00526       *p-- = '\0';
00527       loc += len + (c == SCC_SETXY ? 2 : 1);
00528       continue;
00529     }
00530 
00531     if ((align & SA_HOR_MASK) != SA_LEFT) {
00532       DEBUG(grf, 1, "Using SETX and/or SETXY when not aligned to the left. Fixing alignment...");
00533 
00534       /* For left alignment and change the left so it will roughly be in the
00535        * middle. This will never cause the string to be completely centered,
00536        * but once SETX is used you cannot be sure the actual content of the
00537        * string is centered, so it doesn't really matter. */
00538       align = SA_LEFT | SA_FORCE;
00539       initial_left = left = max(left, (left + right - (int)GetStringBoundingBox(str).width) / 2);
00540     }
00541 
00542     /* We add the begin of the string, but don't add it twice */
00543     if (p != draw_buffer) {
00544       *setx_offsets.Append() = p;
00545       p[-1] = '\0';
00546       *p++ = c;
00547     }
00548 
00549     /* Skip the SCC_SETX(Y) ... */
00550     loc += len;
00551     /* ... copy the x coordinate ... */
00552     *p++ = *loc++;
00553     /* ... and finally copy the y coordinate if it exists */
00554     if (c == SCC_SETXY) *p++ = *loc++;
00555   }
00556 
00557   /* In case we have a RTL language we swap the alignment. */
00558   if (!(align & SA_FORCE) && _current_text_dir == TD_RTL && !(align & SA_STRIP) && (align & SA_HOR_MASK) != SA_HOR_CENTER) align ^= SA_RIGHT;
00559 
00560   for (UChar **iter = setx_offsets.Begin(); iter != setx_offsets.End(); iter++) {
00561     UChar *to_draw = *iter;
00562     int offset = 0;
00563 
00564     /* Skip the SETX(Y) and set the appropriate offsets. */
00565     if (*to_draw == SCC_SETX || *to_draw == SCC_SETXY) {
00566       to_draw++;
00567       offset = *to_draw++;
00568       if (*to_draw == SCC_SETXY) top = initial_top + *to_draw++;
00569     }
00570 
00571     to_draw = HandleBiDiAndArabicShapes(to_draw);
00572     int w = GetStringWidth(to_draw, params.fontsize);
00573 
00574     /* right is the right most position to draw on. In this case we want to do
00575      * calculations with the width of the string. In comparison right can be
00576      * seen as lastof(todraw) and width as lengthof(todraw). They differ by 1.
00577      * So most +1/-1 additions are to move from lengthof to 'indices'.
00578      */
00579     switch (align & SA_HOR_MASK) {
00580       case SA_LEFT:
00581         /* right + 1 = left + w */
00582         left = initial_left + offset;
00583         right = left + w - 1;
00584         break;
00585 
00586       case SA_HOR_CENTER:
00587         left  = RoundDivSU(initial_right + 1 + initial_left - w, 2);
00588         /* right + 1 = left + w */
00589         right = left + w - 1;
00590         break;
00591 
00592       case SA_RIGHT:
00593         left = initial_right + 1 - w - offset;
00594         break;
00595 
00596       default:
00597         NOT_REACHED();
00598     }
00599 
00600     min_left  = min(left, min_left);
00601     max_right = max(right, max_right);
00602 
00603     ReallyDoDrawString(to_draw, left, top, params, !truncate);
00604     if (underline) {
00605       GfxFillRect(left, top + FONT_HEIGHT_NORMAL, right, top + FONT_HEIGHT_NORMAL, _string_colourremap[1]);
00606     }
00607   }
00608 
00609   return (align & SA_HOR_MASK) == SA_RIGHT ? min_left : max_right;
00610 }
00611 
00626 int DrawString(int left, int right, int top, const char *str, TextColour colour, StringAlignment align, bool underline, FontSize fontsize)
00627 {
00628   char buffer[DRAW_STRING_BUFFER];
00629   strecpy(buffer, str, lastof(buffer));
00630   DrawStringParams params(colour, fontsize);
00631   return DrawString(left, right, top, buffer, lastof(buffer), params, align, underline);
00632 }
00633 
00648 int DrawString(int left, int right, int top, StringID str, TextColour colour, StringAlignment align, bool underline, FontSize fontsize)
00649 {
00650   char buffer[DRAW_STRING_BUFFER];
00651   GetString(buffer, str, lastof(buffer));
00652   DrawStringParams params(colour, fontsize);
00653   return DrawString(left, right, top, buffer, lastof(buffer), params, align, underline);
00654 }
00655 
00676 uint32 FormatStringLinebreaks(char *str, const char *last, int maxw, FontSize size)
00677 {
00678   int num = 0;
00679 
00680   assert(maxw > 0);
00681 
00682   for (;;) {
00683     /* The character *after* the last space. */
00684     char *last_space = NULL;
00685     int w = 0;
00686 
00687     for (;;) {
00688       WChar c = Utf8Consume(const_cast<const char **>(&str));
00689       /* whitespace is where we will insert the line-break */
00690       if (IsWhitespace(c)) last_space = str;
00691 
00692       if (IsPrintable(c) && !IsTextDirectionChar(c)) {
00693         int char_w = GetCharacterWidth(size, c);
00694         w += char_w;
00695         if (w > maxw) {
00696           /* The string is longer than maximum width so we need to decide
00697            * what to do with it. */
00698           if (w == char_w) {
00699             /* The character is wider than allowed width; don't know
00700              * what to do with this case... bail out! */
00701             return num + (size << 16);
00702           }
00703           if (last_space == NULL) {
00704             /* No space has been found. Just terminate at our current
00705              * location. This usually happens for languages that do not
00706              * require spaces in strings, like Chinese, Japanese and
00707              * Korean. For other languages terminating mid-word might
00708              * not be the best, but terminating the whole string instead
00709              * of continuing the word at the next line is worse. */
00710             str = Utf8PrevChar(str);
00711             size_t len = strlen(str);
00712             char *terminator = str + len;
00713 
00714             /* The string location + length of the string + 1 for '\0'
00715              * always fits; otherwise there's no trailing '\0' and it
00716              * it not a valid string. */
00717             assert(terminator <= last);
00718             assert(*terminator == '\0');
00719 
00720             /* If the string is too long we have to terminate it earlier. */
00721             if (terminator == last) {
00722               /* Get the 'begin' of the previous character and make that
00723                * the terminator of the string; we truncate it 'early'. */
00724               *Utf8PrevChar(terminator) = '\0';
00725               len = strlen(str);
00726             }
00727             /* Also move the terminator! */
00728             memmove(str + 1, str, len + 1);
00729             *str = '\0';
00730             /* str needs to point to the character *after* the last space */
00731             str++;
00732           } else {
00733             /* A space is found; perfect place to terminate */
00734             str = last_space;
00735           }
00736           break;
00737         }
00738       } else {
00739         switch (c) {
00740           case '\0': return num + (size << 16);
00741           case SCC_SETX:  str++; break;
00742           case SCC_SETXY: str += 2; break;
00743           case SCC_TINYFONT: size = FS_SMALL; break;
00744           case SCC_BIGFONT:  size = FS_LARGE; break;
00745           case '\n': goto end_of_inner_loop;
00746         }
00747       }
00748     }
00749 end_of_inner_loop:
00750     /* String didn't fit on line (or a '\n' was encountered), so 'dummy' terminate
00751      * and increase linecount. We use Utf8PrevChar() as also non 1 char long
00752      * whitespace seperators are supported */
00753     num++;
00754     char *s = Utf8PrevChar(str);
00755     *s++ = '\0';
00756 
00757     /* In which case (see above) we will shift remainder to left and close the gap */
00758     if (str - s >= 1) {
00759       for (; str[-1] != '\0';) *s++ = *str++;
00760     }
00761   }
00762 }
00763 
00764 
00773 static int GetMultilineStringHeight(const char *src, int num, FontSize start_fontsize)
00774 {
00775   int maxy = 0;
00776   int y = 0;
00777   int fh = GetCharacterHeight(start_fontsize);
00778 
00779   for (;;) {
00780     WChar c = Utf8Consume(&src);
00781 
00782     switch (c) {
00783       case 0:            y += fh; if (--num < 0) return maxy; break;
00784       case '\n':         y += fh;                             break;
00785       case SCC_SETX:     src++;                               break;
00786       case SCC_SETXY:    src++; y = (int)*src++;              break;
00787       case SCC_TINYFONT: fh = GetCharacterHeight(FS_SMALL);   break;
00788       case SCC_BIGFONT:  fh = GetCharacterHeight(FS_LARGE);   break;
00789       default:           maxy = max<int>(maxy, y + fh);       break;
00790     }
00791   }
00792 }
00793 
00794 
00801 int GetStringHeight(StringID str, int maxw)
00802 {
00803   char buffer[DRAW_STRING_BUFFER];
00804 
00805   GetString(buffer, str, lastof(buffer));
00806 
00807   uint32 tmp = FormatStringLinebreaks(buffer, lastof(buffer), maxw);
00808 
00809   return GetMultilineStringHeight(buffer, GB(tmp, 0, 16), FS_NORMAL);
00810 }
00811 
00818 Dimension GetStringMultiLineBoundingBox(StringID str, const Dimension &suggestion)
00819 {
00820   Dimension box = {suggestion.width, GetStringHeight(str, suggestion.width)};
00821   return box;
00822 }
00823 
00840 static int DrawStringMultiLine(int left, int right, int top, int bottom, char *str, const char *last, TextColour colour, StringAlignment align, bool underline, FontSize fontsize)
00841 {
00842   int maxw = right - left + 1;
00843   int maxh = bottom - top + 1;
00844 
00845   /* It makes no sense to even try if it can't be drawn anyway, or
00846    * do we really want to support fonts of 0 or less pixels high? */
00847   if (maxh <= 0) return top;
00848 
00849   uint32 tmp = FormatStringLinebreaks(str, last, maxw);
00850   int num = GB(tmp, 0, 16) + 1;
00851 
00852   int mt = GetCharacterHeight((FontSize)GB(tmp, 16, 16));
00853   int total_height = num * mt;
00854 
00855   int skip_lines = 0;
00856   if (total_height > maxh) {
00857     if (maxh < mt) return top; //  Not enough room for a single line.
00858     if ((align & SA_VERT_MASK) == SA_BOTTOM) {
00859       skip_lines = num;
00860       num = maxh / mt;
00861       skip_lines -= num;
00862     } else {
00863       num = maxh / mt;
00864     }
00865     total_height = num * mt;
00866   }
00867 
00868   int y;
00869   switch (align & SA_VERT_MASK) {
00870     case SA_TOP:
00871       y = top;
00872       break;
00873 
00874     case SA_VERT_CENTER:
00875       y = RoundDivSU(bottom + top - total_height, 2);
00876       break;
00877 
00878     case SA_BOTTOM:
00879       y = bottom - total_height;
00880       break;
00881 
00882     default: NOT_REACHED();
00883   }
00884 
00885   const char *src = str;
00886   DrawStringParams params(colour, fontsize);
00887   int written_top = bottom; // Uppermost position of rendering a line of text
00888   for (;;) {
00889     if (skip_lines == 0) {
00890       char buf2[DRAW_STRING_BUFFER];
00891       strecpy(buf2, src, lastof(buf2));
00892       DrawString(left, right, y, buf2, lastof(buf2), params, align, underline, false);
00893       if (written_top > y) written_top = y;
00894       y += mt;
00895       num--;
00896     }
00897 
00898     for (;;) {
00899       WChar c = Utf8Consume(&src);
00900       if (c == 0) {
00901         break;
00902       } else if (c == SCC_SETX) {
00903         src++;
00904       } else if (c == SCC_SETXY) {
00905         src += 2;
00906       } else if (skip_lines > 0) {
00907         /* Skipped drawing, so do additional processing to update params. */
00908         if (c >= SCC_BLUE && c <= SCC_BLACK) {
00909           params.SetColour((TextColour)(c - SCC_BLUE));
00910         } else if (c == SCC_PREVIOUS_COLOUR) { // Revert to the previous colour.
00911           params.SetPreviousColour();
00912         } else if (c == SCC_TINYFONT) {
00913           params.SetFontSize(FS_SMALL);
00914         } else if (c == SCC_BIGFONT) {
00915           params.SetFontSize(FS_LARGE);
00916         }
00917 
00918       }
00919     }
00920     if (skip_lines > 0) skip_lines--;
00921     if (num == 0) return ((align & SA_VERT_MASK) == SA_BOTTOM) ? written_top : y;
00922   }
00923 }
00924 
00940 int DrawStringMultiLine(int left, int right, int top, int bottom, const char *str, TextColour colour, StringAlignment align, bool underline, FontSize fontsize)
00941 {
00942   char buffer[DRAW_STRING_BUFFER];
00943   strecpy(buffer, str, lastof(buffer));
00944   return DrawStringMultiLine(left, right, top, bottom, buffer, lastof(buffer), colour, align, underline, fontsize);
00945 }
00946 
00962 int DrawStringMultiLine(int left, int right, int top, int bottom, StringID str, TextColour colour, StringAlignment align, bool underline, FontSize fontsize)
00963 {
00964   char buffer[DRAW_STRING_BUFFER];
00965   GetString(buffer, str, lastof(buffer));
00966   return DrawStringMultiLine(left, right, top, bottom, buffer, lastof(buffer), colour, align, underline, fontsize);
00967 }
00968 
00979 Dimension GetStringBoundingBox(const char *str, FontSize start_fontsize)
00980 {
00981   FontSize size = start_fontsize;
00982   Dimension br;
00983   uint max_width;
00984   WChar c;
00985 
00986   br.width = br.height = max_width = 0;
00987   for (;;) {
00988     c = Utf8Consume(&str);
00989     if (c == 0) break;
00990     if (IsPrintable(c) && !IsTextDirectionChar(c)) {
00991       br.width += GetCharacterWidth(size, c);
00992     } else {
00993       switch (c) {
00994         case SCC_SETX: br.width = max((uint)*str++, br.width); break;
00995         case SCC_SETXY:
00996           br.width  = max((uint)*str++, br.width);
00997           br.height = max((uint)*str++, br.height);
00998           break;
00999         case SCC_TINYFONT: size = FS_SMALL; break;
01000         case SCC_BIGFONT:  size = FS_LARGE; break;
01001         case '\n':
01002           br.height += GetCharacterHeight(size);
01003           if (br.width > max_width) max_width = br.width;
01004           br.width = 0;
01005           break;
01006       }
01007     }
01008   }
01009   br.height += GetCharacterHeight(size);
01010 
01011   br.width  = max(br.width, max_width);
01012   return br;
01013 }
01014 
01021 Dimension GetStringBoundingBox(StringID strid)
01022 {
01023   char buffer[DRAW_STRING_BUFFER];
01024 
01025   GetString(buffer, strid, lastof(buffer));
01026   return GetStringBoundingBox(buffer);
01027 }
01028 
01036 void DrawCharCentered(WChar c, int x, int y, TextColour colour)
01037 {
01038   SetColourRemap(colour);
01039   GfxMainBlitter(GetGlyph(FS_NORMAL, c), x - GetCharacterWidth(FS_NORMAL, c) / 2, y, BM_COLOUR_REMAP);
01040 }
01041 
01059 static int ReallyDoDrawString(const UChar *string, int x, int y, DrawStringParams &params, bool parse_string_also_when_clipped)
01060 {
01061   DrawPixelInfo *dpi = _cur_dpi;
01062   bool draw_shadow = GetDrawGlyphShadow();
01063   UChar c;
01064   int xo = x;
01065 
01066   if (!parse_string_also_when_clipped) {
01067     /* in "mode multiline", the available space have been verified. Not in regular one.
01068      * So if the string cannot be drawn, return the original start to say so.*/
01069     if (x >= dpi->left + dpi->width || y >= dpi->top + dpi->height) return x;
01070   }
01071 
01072 switch_colour:;
01073   SetColourRemap(params.cur_colour);
01074 
01075 check_bounds:
01076   if (y + _max_char_height <= dpi->top || dpi->top + dpi->height <= y) {
01077 skip_char:;
01078     for (;;) {
01079       c = *string++;
01080       if (!IsPrintable(c)) goto skip_cont;
01081     }
01082   }
01083 
01084   for (;;) {
01085     c = *string++;
01086 skip_cont:;
01087     if (c == 0) {
01088       return x;  // Nothing more to draw, get out. And here is the new x position
01089     }
01090     if (IsPrintable(c) && !IsTextDirectionChar(c)) {
01091       if (x >= dpi->left + dpi->width) goto skip_char;
01092       if (x + _max_char_width >= dpi->left) {
01093         const Sprite *glyph = GetGlyph(params.fontsize, c);
01094         if (draw_shadow && params.fontsize == FS_NORMAL && params.cur_colour != TC_BLACK && !(c >= SCC_SPRITE_START && c <= SCC_SPRITE_END)) {
01095           SetColourRemap(TC_BLACK);
01096           GfxMainBlitter(glyph, x + 1, y + 1, BM_COLOUR_REMAP);
01097           SetColourRemap(params.cur_colour);
01098         }
01099         GfxMainBlitter(glyph, x, y, BM_COLOUR_REMAP);
01100       }
01101       x += GetCharacterWidth(params.fontsize, c);
01102     } else if (c == '\n') { // newline = {}
01103       x = xo;  // We require a new line, so the x coordinate is reset
01104       y += GetCharacterHeight(params.fontsize);
01105       goto check_bounds;
01106     } else if (c >= SCC_BLUE && c <= SCC_BLACK) { // change colour?
01107       params.SetColour((TextColour)(c - SCC_BLUE));
01108       goto switch_colour;
01109     } else if (c == SCC_PREVIOUS_COLOUR) { // revert to the previous colour
01110       params.SetPreviousColour();
01111       goto switch_colour;
01112     } else if (c == SCC_SETX || c == SCC_SETXY) { // {SETX}/{SETXY}
01113       /* The characters are handled before calling this. */
01114       NOT_REACHED();
01115     } else if (c == SCC_TINYFONT) { // {TINYFONT}
01116       params.SetFontSize(FS_SMALL);
01117     } else if (c == SCC_BIGFONT) { // {BIGFONT}
01118       params.SetFontSize(FS_LARGE);
01119     } else if (!IsTextDirectionChar(c)) {
01120       DEBUG(misc, 0, "[utf8] unknown string command character %d", c);
01121     }
01122   }
01123 }
01124 
01132 Dimension GetSpriteSize(SpriteID sprid, Point *offset, ZoomLevel zoom)
01133 {
01134   const Sprite *sprite = GetSprite(sprid, ST_NORMAL);
01135 
01136   if (offset != NULL) {
01137     offset->x = UnScaleByZoom(sprite->x_offs, zoom);
01138     offset->y = UnScaleByZoom(sprite->y_offs, zoom);
01139   }
01140 
01141   Dimension d;
01142   d.width  = max<int>(0, UnScaleByZoom(sprite->x_offs + sprite->width, zoom));
01143   d.height = max<int>(0, UnScaleByZoom(sprite->y_offs + sprite->height, zoom));
01144   return d;
01145 }
01146 
01155 void DrawSpriteViewport(SpriteID img, PaletteID pal, int x, int y, const SubSprite *sub)
01156 {
01157   SpriteID real_sprite = GB(img, 0, SPRITE_WIDTH);
01158   if (HasBit(img, PALETTE_MODIFIER_TRANSPARENT)) {
01159     _colour_remap_ptr = GetNonSprite(GB(pal, 0, PALETTE_WIDTH), ST_RECOLOUR) + 1;
01160     GfxMainBlitterViewport(GetSprite(real_sprite, ST_NORMAL), x, y, BM_TRANSPARENT, sub, real_sprite);
01161   } else if (pal != PAL_NONE) {
01162     _colour_remap_ptr = GetNonSprite(GB(pal, 0, PALETTE_WIDTH), ST_RECOLOUR) + 1;
01163     GfxMainBlitterViewport(GetSprite(real_sprite, ST_NORMAL), x, y, BM_COLOUR_REMAP, sub, real_sprite);
01164   } else {
01165     GfxMainBlitterViewport(GetSprite(real_sprite, ST_NORMAL), x, y, BM_NORMAL, sub, real_sprite);
01166   }
01167 }
01168 
01178 void DrawSprite(SpriteID img, PaletteID pal, int x, int y, const SubSprite *sub, ZoomLevel zoom)
01179 {
01180   SpriteID real_sprite = GB(img, 0, SPRITE_WIDTH);
01181   if (HasBit(img, PALETTE_MODIFIER_TRANSPARENT)) {
01182     _colour_remap_ptr = GetNonSprite(GB(pal, 0, PALETTE_WIDTH), ST_RECOLOUR) + 1;
01183     GfxMainBlitter(GetSprite(real_sprite, ST_NORMAL), x, y, BM_TRANSPARENT, sub, real_sprite, zoom);
01184   } else if (pal != PAL_NONE) {
01185     _colour_remap_ptr = GetNonSprite(GB(pal, 0, PALETTE_WIDTH), ST_RECOLOUR) + 1;
01186     GfxMainBlitter(GetSprite(real_sprite, ST_NORMAL), x, y, BM_COLOUR_REMAP, sub, real_sprite, zoom);
01187   } else {
01188     GfxMainBlitter(GetSprite(real_sprite, ST_NORMAL), x, y, BM_NORMAL, sub, real_sprite, zoom);
01189   }
01190 }
01191 
01192 static void GfxMainBlitterViewport(const Sprite *sprite, int x, int y, BlitterMode mode, const SubSprite *sub, SpriteID sprite_id)
01193 {
01194   const DrawPixelInfo *dpi = _cur_dpi;
01195   Blitter::BlitterParams bp;
01196 
01197   /* Amount of pixels to clip from the source sprite */
01198   int clip_left   = (sub != NULL ? max(0,                   -sprite->x_offs + sub->left * ZOOM_LVL_BASE       ) : 0);
01199   int clip_top    = (sub != NULL ? max(0,                   -sprite->y_offs + sub->top  * ZOOM_LVL_BASE       ) : 0);
01200   int clip_right  = (sub != NULL ? max(0, sprite->width  - (-sprite->x_offs + (sub->right + 1)  * ZOOM_LVL_BASE)) : 0);
01201   int clip_bottom = (sub != NULL ? max(0, sprite->height - (-sprite->y_offs + (sub->bottom + 1) * ZOOM_LVL_BASE)) : 0);
01202 
01203   if (clip_left + clip_right >= sprite->width) return;
01204   if (clip_top + clip_bottom >= sprite->height) return;
01205 
01206   /* Move to the correct offset */
01207   x += sprite->x_offs;
01208   y += sprite->y_offs;
01209 
01210   /* Copy the main data directly from the sprite */
01211   bp.sprite = sprite->data;
01212   bp.sprite_width = sprite->width;
01213   bp.sprite_height = sprite->height;
01214   bp.width = UnScaleByZoom(sprite->width - clip_left - clip_right, dpi->zoom);
01215   bp.height = UnScaleByZoom(sprite->height - clip_top - clip_bottom, dpi->zoom);
01216   bp.top = 0;
01217   bp.left = 0;
01218   bp.skip_left = UnScaleByZoomLower(clip_left, dpi->zoom);
01219   bp.skip_top = UnScaleByZoomLower(clip_top, dpi->zoom);
01220 
01221   x += ScaleByZoom(bp.skip_left, dpi->zoom);
01222   y += ScaleByZoom(bp.skip_top, dpi->zoom);
01223 
01224   bp.dst = dpi->dst_ptr;
01225   bp.pitch = dpi->pitch;
01226   bp.remap = _colour_remap_ptr;
01227 
01228   assert(sprite->width > 0);
01229   assert(sprite->height > 0);
01230 
01231   if (bp.width <= 0) return;
01232   if (bp.height <= 0) return;
01233 
01234   y -= dpi->top;
01235   /* Check for top overflow */
01236   if (y < 0) {
01237     bp.height -= -UnScaleByZoom(y, dpi->zoom);
01238     if (bp.height <= 0) return;
01239     bp.skip_top += -UnScaleByZoom(y, dpi->zoom);
01240     y = 0;
01241   } else {
01242     bp.top = UnScaleByZoom(y, dpi->zoom);
01243   }
01244 
01245   /* Check for bottom overflow */
01246   y += ScaleByZoom(bp.height, dpi->zoom) - dpi->height;
01247   if (y > 0) {
01248     bp.height -= UnScaleByZoom(y, dpi->zoom);
01249     if (bp.height <= 0) return;
01250   }
01251 
01252   x -= dpi->left;
01253   /* Check for left overflow */
01254   if (x < 0) {
01255     bp.width -= -UnScaleByZoom(x, dpi->zoom);
01256     if (bp.width <= 0) return;
01257     bp.skip_left += -UnScaleByZoom(x, dpi->zoom);
01258     x = 0;
01259   } else {
01260     bp.left = UnScaleByZoom(x, dpi->zoom);
01261   }
01262 
01263   /* Check for right overflow */
01264   x += ScaleByZoom(bp.width, dpi->zoom) - dpi->width;
01265   if (x > 0) {
01266     bp.width -= UnScaleByZoom(x, dpi->zoom);
01267     if (bp.width <= 0) return;
01268   }
01269 
01270   assert(bp.skip_left + bp.width <= UnScaleByZoom(sprite->width, dpi->zoom));
01271   assert(bp.skip_top + bp.height <= UnScaleByZoom(sprite->height, dpi->zoom));
01272 
01273   /* We do not want to catch the mouse. However we also use that spritenumber for unknown (text) sprites. */
01274   if (_newgrf_debug_sprite_picker.mode == SPM_REDRAW && sprite_id != SPR_CURSOR_MOUSE) {
01275     Blitter *blitter = BlitterFactoryBase::GetCurrentBlitter();
01276     void *topleft = blitter->MoveTo(bp.dst, bp.left, bp.top);
01277     void *bottomright = blitter->MoveTo(topleft, bp.width - 1, bp.height - 1);
01278 
01279     void *clicked = _newgrf_debug_sprite_picker.clicked_pixel;
01280 
01281     if (topleft <= clicked && clicked <= bottomright) {
01282       uint offset = (((size_t)clicked - (size_t)topleft) / (blitter->GetScreenDepth() / 8)) % bp.pitch;
01283       if (offset < (uint)bp.width) {
01284         _newgrf_debug_sprite_picker.sprites.Include(sprite_id);
01285       }
01286     }
01287   }
01288 
01289   BlitterFactoryBase::GetCurrentBlitter()->Draw(&bp, mode, dpi->zoom);
01290 }
01291 
01292 static void GfxMainBlitter(const Sprite *sprite, int x, int y, BlitterMode mode, const SubSprite *sub, SpriteID sprite_id, ZoomLevel zoom)
01293 {
01294   const DrawPixelInfo *dpi = _cur_dpi;
01295   Blitter::BlitterParams bp;
01296 
01297   /* Amount of pixels to clip from the source sprite */
01298   int clip_left   = (sub != NULL ? max(0,                   -sprite->x_offs + sub->left       ) : 0);
01299   int clip_top    = (sub != NULL ? max(0,                   -sprite->y_offs + sub->top        ) : 0);
01300   int clip_right  = (sub != NULL ? max(0, sprite->width  - (-sprite->x_offs + sub->right  + 1)) : 0);
01301   int clip_bottom = (sub != NULL ? max(0, sprite->height - (-sprite->y_offs + sub->bottom + 1)) : 0);
01302 
01303   if (clip_left + clip_right >= sprite->width) return;
01304   if (clip_top + clip_bottom >= sprite->height) return;
01305 
01306   /* Scale it */
01307   x = ScaleByZoom(x, zoom);
01308   y = ScaleByZoom(y, zoom);
01309 
01310   /* Move to the correct offset */
01311   x += sprite->x_offs;
01312   y += sprite->y_offs;
01313 
01314   /* Copy the main data directly from the sprite */
01315   bp.sprite = sprite->data;
01316   bp.sprite_width = sprite->width;
01317   bp.sprite_height = sprite->height;
01318   bp.width = UnScaleByZoom(sprite->width - clip_left - clip_right, zoom);
01319   bp.height = UnScaleByZoom(sprite->height - clip_top - clip_bottom, zoom);
01320   bp.top = 0;
01321   bp.left = 0;
01322   bp.skip_left = UnScaleByZoomLower(clip_left, zoom);
01323   bp.skip_top = UnScaleByZoomLower(clip_top, zoom);
01324 
01325   x += ScaleByZoom(bp.skip_left, zoom);
01326   y += ScaleByZoom(bp.skip_top, zoom);
01327 
01328   bp.dst = dpi->dst_ptr;
01329   bp.pitch = dpi->pitch;
01330   bp.remap = _colour_remap_ptr;
01331 
01332   assert(sprite->width > 0);
01333   assert(sprite->height > 0);
01334 
01335   if (bp.width <= 0) return;
01336   if (bp.height <= 0) return;
01337 
01338   y -= ScaleByZoom(dpi->top, zoom);
01339   /* Check for top overflow */
01340   if (y < 0) {
01341     bp.height -= -UnScaleByZoom(y, zoom);
01342     if (bp.height <= 0) return;
01343     bp.skip_top += -UnScaleByZoom(y, zoom);
01344     y = 0;
01345   } else {
01346     bp.top = UnScaleByZoom(y, zoom);
01347   }
01348 
01349   /* Check for bottom overflow */
01350   y += ScaleByZoom(bp.height - dpi->height, zoom);
01351   if (y > 0) {
01352     bp.height -= UnScaleByZoom(y, zoom);
01353     if (bp.height <= 0) return;
01354   }
01355 
01356   x -= ScaleByZoom(dpi->left, zoom);
01357   /* Check for left overflow */
01358   if (x < 0) {
01359     bp.width -= -UnScaleByZoom(x, zoom);
01360     if (bp.width <= 0) return;
01361     bp.skip_left += -UnScaleByZoom(x, zoom);
01362     x = 0;
01363   } else {
01364     bp.left = UnScaleByZoom(x, zoom);
01365   }
01366 
01367   /* Check for right overflow */
01368   x += ScaleByZoom(bp.width - dpi->width, zoom);
01369   if (x > 0) {
01370     bp.width -= UnScaleByZoom(x, zoom);
01371     if (bp.width <= 0) return;
01372   }
01373 
01374   assert(bp.skip_left + bp.width <= UnScaleByZoom(sprite->width, zoom));
01375   assert(bp.skip_top + bp.height <= UnScaleByZoom(sprite->height, zoom));
01376 
01377   /* We do not want to catch the mouse. However we also use that spritenumber for unknown (text) sprites. */
01378   if (_newgrf_debug_sprite_picker.mode == SPM_REDRAW && sprite_id != SPR_CURSOR_MOUSE) {
01379     Blitter *blitter = BlitterFactoryBase::GetCurrentBlitter();
01380     void *topleft = blitter->MoveTo(bp.dst, bp.left, bp.top);
01381     void *bottomright = blitter->MoveTo(topleft, bp.width - 1, bp.height - 1);
01382 
01383     void *clicked = _newgrf_debug_sprite_picker.clicked_pixel;
01384 
01385     if (topleft <= clicked && clicked <= bottomright) {
01386       uint offset = (((size_t)clicked - (size_t)topleft) / (blitter->GetScreenDepth() / 8)) % bp.pitch;
01387       if (offset < (uint)bp.width) {
01388         _newgrf_debug_sprite_picker.sprites.Include(sprite_id);
01389       }
01390     }
01391   }
01392 
01393   BlitterFactoryBase::GetCurrentBlitter()->Draw(&bp, mode, zoom);
01394 }
01395 
01396 void DoPaletteAnimations();
01397 
01398 void GfxInitPalettes()
01399 {
01400   memcpy(&_cur_palette, &_palette, sizeof(_cur_palette));
01401   DoPaletteAnimations();
01402 }
01403 
01404 #define EXTR(p, q) (((uint16)(palette_animation_counter * (p)) * (q)) >> 16)
01405 #define EXTR2(p, q) (((uint16)(~palette_animation_counter * (p)) * (q)) >> 16)
01406 
01407 void DoPaletteAnimations()
01408 {
01409   /* Animation counter for the palette animation. */
01410   static int palette_animation_counter = 0;
01411   palette_animation_counter += 8;
01412 
01413   Blitter *blitter = BlitterFactoryBase::GetCurrentBlitter();
01414   const Colour *s;
01415   const ExtraPaletteValues *ev = &_extra_palette_values;
01416   Colour old_val[PALETTE_ANIM_SIZE];
01417   const uint old_tc = palette_animation_counter;
01418   uint i;
01419   uint j;
01420 
01421   if (blitter != NULL && blitter->UsePaletteAnimation() == Blitter::PALETTE_ANIMATION_NONE) {
01422     palette_animation_counter = 0;
01423   }
01424 
01425   Colour *palette_pos = &_cur_palette.palette[PALETTE_ANIM_START];  // Points to where animations are taking place on the palette
01426   /* Makes a copy of the current anmation palette in old_val,
01427    * so the work on the current palette could be compared, see if there has been any changes */
01428   memcpy(old_val, palette_pos, sizeof(old_val));
01429 
01430   /* Fizzy Drink bubbles animation */
01431   s = ev->fizzy_drink;
01432   j = EXTR2(512, EPV_CYCLES_FIZZY_DRINK);
01433   for (i = 0; i != EPV_CYCLES_FIZZY_DRINK; i++) {
01434     *palette_pos++ = s[j];
01435     j++;
01436     if (j == EPV_CYCLES_FIZZY_DRINK) j = 0;
01437   }
01438 
01439   /* Oil refinery fire animation */
01440   s = ev->oil_refinery;
01441   j = EXTR2(512, EPV_CYCLES_OIL_REFINERY);
01442   for (i = 0; i != EPV_CYCLES_OIL_REFINERY; i++) {
01443     *palette_pos++ = s[j];
01444     j++;
01445     if (j == EPV_CYCLES_OIL_REFINERY) j = 0;
01446   }
01447 
01448   /* Radio tower blinking */
01449   {
01450     byte i = (palette_animation_counter >> 1) & 0x7F;
01451     byte v;
01452 
01453     if (i < 0x3f) {
01454       v = 255;
01455     } else if (i < 0x4A || i >= 0x75) {
01456       v = 128;
01457     } else {
01458       v = 20;
01459     }
01460     palette_pos->r = v;
01461     palette_pos->g = 0;
01462     palette_pos->b = 0;
01463     palette_pos++;
01464 
01465     i ^= 0x40;
01466     if (i < 0x3f) {
01467       v = 255;
01468     } else if (i < 0x4A || i >= 0x75) {
01469       v = 128;
01470     } else {
01471       v = 20;
01472     }
01473     palette_pos->r = v;
01474     palette_pos->g = 0;
01475     palette_pos->b = 0;
01476     palette_pos++;
01477   }
01478 
01479   /* Handle lighthouse and stadium animation */
01480   s = ev->lighthouse;
01481   j = EXTR(256, EPV_CYCLES_LIGHTHOUSE);
01482   for (i = 0; i != EPV_CYCLES_LIGHTHOUSE; i++) {
01483     *palette_pos++ = s[j];
01484     j++;
01485     if (j == EPV_CYCLES_LIGHTHOUSE) j = 0;
01486   }
01487 
01488   /* Dark blue water */
01489   s = (_settings_game.game_creation.landscape == LT_TOYLAND) ? ev->dark_water_toyland : ev->dark_water;
01490   j = EXTR(320, EPV_CYCLES_DARK_WATER);
01491   for (i = 0; i != EPV_CYCLES_DARK_WATER; i++) {
01492     *palette_pos++ = s[j];
01493     j++;
01494     if (j == EPV_CYCLES_DARK_WATER) j = 0;
01495   }
01496 
01497   /* Glittery water */
01498   s = (_settings_game.game_creation.landscape == LT_TOYLAND) ? ev->glitter_water_toyland : ev->glitter_water;
01499   j = EXTR(128, EPV_CYCLES_GLITTER_WATER);
01500   for (i = 0; i != EPV_CYCLES_GLITTER_WATER / 3; i++) {
01501     *palette_pos++ = s[j];
01502     j += 3;
01503     if (j >= EPV_CYCLES_GLITTER_WATER) j -= EPV_CYCLES_GLITTER_WATER;
01504   }
01505 
01506   if (blitter != NULL && blitter->UsePaletteAnimation() == Blitter::PALETTE_ANIMATION_NONE) {
01507     palette_animation_counter = old_tc;
01508   } else {
01509     if (memcmp(old_val, &_cur_palette.palette[PALETTE_ANIM_START], sizeof(old_val)) != 0 && _cur_palette.count_dirty == 0) {
01510       /* Did we changed anything on the palette? Seems so.  Mark it as dirty */
01511       _cur_palette.first_dirty = PALETTE_ANIM_START;
01512       _cur_palette.count_dirty = PALETTE_ANIM_SIZE;
01513     }
01514   }
01515 }
01516 
01517 
01522 void LoadStringWidthTable(bool monospace)
01523 {
01524   _max_char_height = 0;
01525   _max_char_width  = 0;
01526 
01527   for (FontSize fs = monospace ? FS_MONO : FS_BEGIN; fs < (monospace ? FS_END : FS_MONO); fs++) {
01528     _max_char_height = max<int>(_max_char_height, GetCharacterHeight(fs));
01529     for (uint i = 0; i != 224; i++) {
01530       _stringwidth_table[fs][i] = GetGlyphWidth(fs, i + 32);
01531       _max_char_width = max<int>(_max_char_width, _stringwidth_table[fs][i]);
01532     }
01533   }
01534 
01535   /* Needed because they need to be 1 more than the widest. */
01536   _max_char_height++;
01537   _max_char_width++;
01538 
01539   ReInitAllWindows();
01540 }
01541 
01548 byte GetCharacterWidth(FontSize size, WChar key)
01549 {
01550   /* Use _stringwidth_table cache if possible */
01551   if (key >= 32 && key < 256) return _stringwidth_table[size][key - 32];
01552 
01553   return GetGlyphWidth(size, key);
01554 }
01555 
01561 byte GetDigitWidth(FontSize size)
01562 {
01563   byte width = 0;
01564   for (char c = '0'; c <= '9'; c++) {
01565     width = max(GetCharacterWidth(size, c), width);
01566   }
01567   return width;
01568 }
01569 
01570 
01571 void ScreenSizeChanged()
01572 {
01573   _dirty_bytes_per_line = CeilDiv(_screen.width, DIRTY_BLOCK_WIDTH);
01574   _dirty_blocks = ReallocT<byte>(_dirty_blocks, _dirty_bytes_per_line * CeilDiv(_screen.height, DIRTY_BLOCK_HEIGHT));
01575 
01576   /* check the dirty rect */
01577   if (_invalid_rect.right >= _screen.width) _invalid_rect.right = _screen.width;
01578   if (_invalid_rect.bottom >= _screen.height) _invalid_rect.bottom = _screen.height;
01579 
01580   /* screen size changed and the old bitmap is invalid now, so we don't want to undraw it */
01581   _cursor.visible = false;
01582 }
01583 
01584 void UndrawMouseCursor()
01585 {
01586   /* Don't undraw the mouse cursor if the screen is not ready */
01587   if (_screen.dst_ptr == NULL) return;
01588 
01589   if (_cursor.visible) {
01590     Blitter *blitter = BlitterFactoryBase::GetCurrentBlitter();
01591     _cursor.visible = false;
01592     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);
01593     _video_driver->MakeDirty(_cursor.draw_pos.x, _cursor.draw_pos.y, _cursor.draw_size.x, _cursor.draw_size.y);
01594   }
01595 }
01596 
01597 void DrawMouseCursor()
01598 {
01599 #if defined(WINCE)
01600   /* Don't ever draw the mouse for WinCE, as we work with a stylus */
01601   return;
01602 #endif
01603 
01604   /* Don't draw the mouse cursor if the screen is not ready */
01605   if (_screen.dst_ptr == NULL) return;
01606 
01607   Blitter *blitter = BlitterFactoryBase::GetCurrentBlitter();
01608   int x;
01609   int y;
01610   int w;
01611   int h;
01612 
01613   /* Redraw mouse cursor but only when it's inside the window */
01614   if (!_cursor.in_window) return;
01615 
01616   /* Don't draw the mouse cursor if it's already drawn */
01617   if (_cursor.visible) {
01618     if (!_cursor.dirty) return;
01619     UndrawMouseCursor();
01620   }
01621 
01622   w = _cursor.size.x;
01623   x = _cursor.pos.x + _cursor.offs.x + _cursor.short_vehicle_offset;
01624   if (x < 0) {
01625     w += x;
01626     x = 0;
01627   }
01628   if (w > _screen.width - x) w = _screen.width - x;
01629   if (w <= 0) return;
01630   _cursor.draw_pos.x = x;
01631   _cursor.draw_size.x = w;
01632 
01633   h = _cursor.size.y;
01634   y = _cursor.pos.y + _cursor.offs.y;
01635   if (y < 0) {
01636     h += y;
01637     y = 0;
01638   }
01639   if (h > _screen.height - y) h = _screen.height - y;
01640   if (h <= 0) return;
01641   _cursor.draw_pos.y = y;
01642   _cursor.draw_size.y = h;
01643 
01644   uint8 *buffer = _cursor_backup.Allocate(blitter->BufferSize(w, h));
01645 
01646   /* Make backup of stuff below cursor */
01647   blitter->CopyToBuffer(blitter->MoveTo(_screen.dst_ptr, _cursor.draw_pos.x, _cursor.draw_pos.y), buffer, _cursor.draw_size.x, _cursor.draw_size.y);
01648 
01649   /* Draw cursor on screen */
01650   _cur_dpi = &_screen;
01651   DrawSprite(_cursor.sprite, _cursor.pal, _cursor.pos.x + _cursor.short_vehicle_offset, _cursor.pos.y);
01652 
01653   _video_driver->MakeDirty(_cursor.draw_pos.x, _cursor.draw_pos.y, _cursor.draw_size.x, _cursor.draw_size.y);
01654 
01655   _cursor.visible = true;
01656   _cursor.dirty = false;
01657 }
01658 
01659 void RedrawScreenRect(int left, int top, int right, int bottom)
01660 {
01661   assert(right <= _screen.width && bottom <= _screen.height);
01662   if (_cursor.visible) {
01663     if (right > _cursor.draw_pos.x &&
01664         left < _cursor.draw_pos.x + _cursor.draw_size.x &&
01665         bottom > _cursor.draw_pos.y &&
01666         top < _cursor.draw_pos.y + _cursor.draw_size.y) {
01667       UndrawMouseCursor();
01668     }
01669   }
01670 
01671 #ifdef ENABLE_NETWORK
01672   if (_networking) NetworkUndrawChatMessage();
01673 #endif /* ENABLE_NETWORK */
01674 
01675   DrawOverlappedWindowForAll(left, top, right, bottom);
01676 
01677   _video_driver->MakeDirty(left, top, right - left, bottom - top);
01678 }
01679 
01685 void DrawDirtyBlocks()
01686 {
01687   byte *b = _dirty_blocks;
01688   const int w = Align(_screen.width,  DIRTY_BLOCK_WIDTH);
01689   const int h = Align(_screen.height, DIRTY_BLOCK_HEIGHT);
01690   int x;
01691   int y;
01692 
01693   if (HasModalProgress()) {
01694     /* We are generating the world, so release our rights to the map and
01695      * painting while we are waiting a bit. */
01696     _modal_progress_paint_mutex->EndCritical();
01697     _modal_progress_work_mutex->EndCritical();
01698 
01699     /* Wait a while and update _realtime_tick so we are given the rights */
01700     if (!IsFirstModalProgressLoop()) CSleep(MODAL_PROGRESS_REDRAW_TIMEOUT);
01701     _realtime_tick += MODAL_PROGRESS_REDRAW_TIMEOUT;
01702     _modal_progress_paint_mutex->BeginCritical();
01703     _modal_progress_work_mutex->BeginCritical();
01704 
01705     if (_switch_mode != SM_NONE && !HasModalProgress()) {
01706       SwitchToMode(_switch_mode);
01707       _switch_mode = SM_NONE;
01708     }
01709   }
01710 
01711   y = 0;
01712   do {
01713     x = 0;
01714     do {
01715       if (*b != 0) {
01716         int left;
01717         int top;
01718         int right = x + DIRTY_BLOCK_WIDTH;
01719         int bottom = y;
01720         byte *p = b;
01721         int h2;
01722 
01723         /* First try coalescing downwards */
01724         do {
01725           *p = 0;
01726           p += _dirty_bytes_per_line;
01727           bottom += DIRTY_BLOCK_HEIGHT;
01728         } while (bottom != h && *p != 0);
01729 
01730         /* Try coalescing to the right too. */
01731         h2 = (bottom - y) / DIRTY_BLOCK_HEIGHT;
01732         assert(h2 > 0);
01733         p = b;
01734 
01735         while (right != w) {
01736           byte *p2 = ++p;
01737           int h = h2;
01738           /* Check if a full line of dirty flags is set. */
01739           do {
01740             if (!*p2) goto no_more_coalesc;
01741             p2 += _dirty_bytes_per_line;
01742           } while (--h != 0);
01743 
01744           /* Wohoo, can combine it one step to the right!
01745            * Do that, and clear the bits. */
01746           right += DIRTY_BLOCK_WIDTH;
01747 
01748           h = h2;
01749           p2 = p;
01750           do {
01751             *p2 = 0;
01752             p2 += _dirty_bytes_per_line;
01753           } while (--h != 0);
01754         }
01755         no_more_coalesc:
01756 
01757         left = x;
01758         top = y;
01759 
01760         if (left   < _invalid_rect.left  ) left   = _invalid_rect.left;
01761         if (top    < _invalid_rect.top   ) top    = _invalid_rect.top;
01762         if (right  > _invalid_rect.right ) right  = _invalid_rect.right;
01763         if (bottom > _invalid_rect.bottom) bottom = _invalid_rect.bottom;
01764 
01765         if (left < right && top < bottom) {
01766           RedrawScreenRect(left, top, right, bottom);
01767         }
01768 
01769       }
01770     } while (b++, (x += DIRTY_BLOCK_WIDTH) != w);
01771   } while (b += -(int)(w / DIRTY_BLOCK_WIDTH) + _dirty_bytes_per_line, (y += DIRTY_BLOCK_HEIGHT) != h);
01772 
01773   _invalid_rect.left = w;
01774   _invalid_rect.top = h;
01775   _invalid_rect.right = 0;
01776   _invalid_rect.bottom = 0;
01777 }
01778 
01794 void SetDirtyBlocks(int left, int top, int right, int bottom)
01795 {
01796   byte *b;
01797   int width;
01798   int height;
01799 
01800   if (left < 0) left = 0;
01801   if (top < 0) top = 0;
01802   if (right > _screen.width) right = _screen.width;
01803   if (bottom > _screen.height) bottom = _screen.height;
01804 
01805   if (left >= right || top >= bottom) return;
01806 
01807   if (left   < _invalid_rect.left  ) _invalid_rect.left   = left;
01808   if (top    < _invalid_rect.top   ) _invalid_rect.top    = top;
01809   if (right  > _invalid_rect.right ) _invalid_rect.right  = right;
01810   if (bottom > _invalid_rect.bottom) _invalid_rect.bottom = bottom;
01811 
01812   left /= DIRTY_BLOCK_WIDTH;
01813   top  /= DIRTY_BLOCK_HEIGHT;
01814 
01815   b = _dirty_blocks + top * _dirty_bytes_per_line + left;
01816 
01817   width  = ((right  - 1) / DIRTY_BLOCK_WIDTH)  - left + 1;
01818   height = ((bottom - 1) / DIRTY_BLOCK_HEIGHT) - top  + 1;
01819 
01820   assert(width > 0 && height > 0);
01821 
01822   do {
01823     int i = width;
01824 
01825     do b[--i] = 0xFF; while (i != 0);
01826 
01827     b += _dirty_bytes_per_line;
01828   } while (--height != 0);
01829 }
01830 
01837 void MarkWholeScreenDirty()
01838 {
01839   SetDirtyBlocks(0, 0, _screen.width, _screen.height);
01840 }
01841 
01856 bool FillDrawPixelInfo(DrawPixelInfo *n, int left, int top, int width, int height)
01857 {
01858   Blitter *blitter = BlitterFactoryBase::GetCurrentBlitter();
01859   const DrawPixelInfo *o = _cur_dpi;
01860 
01861   n->zoom = ZOOM_LVL_NORMAL;
01862 
01863   assert(width > 0);
01864   assert(height > 0);
01865 
01866   if ((left -= o->left) < 0) {
01867     width += left;
01868     if (width <= 0) return false;
01869     n->left = -left;
01870     left = 0;
01871   } else {
01872     n->left = 0;
01873   }
01874 
01875   if (width > o->width - left) {
01876     width = o->width - left;
01877     if (width <= 0) return false;
01878   }
01879   n->width = width;
01880 
01881   if ((top -= o->top) < 0) {
01882     height += top;
01883     if (height <= 0) return false;
01884     n->top = -top;
01885     top = 0;
01886   } else {
01887     n->top = 0;
01888   }
01889 
01890   n->dst_ptr = blitter->MoveTo(o->dst_ptr, left, top);
01891   n->pitch = o->pitch;
01892 
01893   if (height > o->height - top) {
01894     height = o->height - top;
01895     if (height <= 0) return false;
01896   }
01897   n->height = height;
01898 
01899   return true;
01900 }
01901 
01906 void UpdateCursorSize()
01907 {
01908   CursorVars *cv = &_cursor;
01909   const Sprite *p = GetSprite(GB(cv->sprite, 0, SPRITE_WIDTH), ST_NORMAL);
01910 
01911   cv->size.y = UnScaleByZoom(p->height, ZOOM_LVL_GUI);
01912   cv->size.x = UnScaleByZoom(p->width, ZOOM_LVL_GUI);
01913   cv->offs.x = UnScaleByZoom(p->x_offs, ZOOM_LVL_GUI);
01914   cv->offs.y = UnScaleByZoom(p->y_offs, ZOOM_LVL_GUI);
01915 
01916   cv->dirty = true;
01917 }
01918 
01924 static void SetCursorSprite(CursorID cursor, PaletteID pal)
01925 {
01926   CursorVars *cv = &_cursor;
01927   if (cv->sprite == cursor) return;
01928 
01929   cv->sprite = cursor;
01930   cv->pal    = pal;
01931   UpdateCursorSize();
01932 
01933   cv->short_vehicle_offset = 0;
01934 }
01935 
01936 static void SwitchAnimatedCursor()
01937 {
01938   const AnimCursor *cur = _cursor.animate_cur;
01939 
01940   if (cur == NULL || cur->sprite == AnimCursor::LAST) cur = _cursor.animate_list;
01941 
01942   SetCursorSprite(cur->sprite, _cursor.pal);
01943 
01944   _cursor.animate_timeout = cur->display_time;
01945   _cursor.animate_cur     = cur + 1;
01946 }
01947 
01948 void CursorTick()
01949 {
01950   if (_cursor.animate_timeout != 0 && --_cursor.animate_timeout == 0) {
01951     SwitchAnimatedCursor();
01952   }
01953 }
01954 
01961 void SetMouseCursor(CursorID sprite, PaletteID pal)
01962 {
01963   /* Turn off animation */
01964   _cursor.animate_timeout = 0;
01965   /* Set cursor */
01966   SetCursorSprite(sprite, pal);
01967 }
01968 
01974 void SetAnimatedMouseCursor(const AnimCursor *table)
01975 {
01976   _cursor.animate_list = table;
01977   _cursor.animate_cur = NULL;
01978   _cursor.pal = PAL_NONE;
01979   SwitchAnimatedCursor();
01980 }
01981 
01982 bool ChangeResInGame(int width, int height)
01983 {
01984   return (_screen.width == width && _screen.height == height) || _video_driver->ChangeResolution(width, height);
01985 }
01986 
01987 bool ToggleFullScreen(bool fs)
01988 {
01989   bool result = _video_driver->ToggleFullscreen(fs);
01990   if (_fullscreen != fs && _num_resolutions == 0) {
01991     DEBUG(driver, 0, "Could not find a suitable fullscreen resolution");
01992   }
01993   return result;
01994 }
01995 
01996 static int CDECL compare_res(const Dimension *pa, const Dimension *pb)
01997 {
01998   int x = pa->width - pb->width;
01999   if (x != 0) return x;
02000   return pa->height - pb->height;
02001 }
02002 
02003 void SortResolutions(int count)
02004 {
02005   QSortT(_resolutions, count, &compare_res);
02006 }