(*
* Hedgewars, a free turn based strategy game
* Copyright (c) 2004-2015 Andrey Korotaev <unC0Rr@gmail.com>
*
* This program 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 of the License
*
* This program 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. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*)
{$INCLUDE "options.inc"}
unit uRenderUtils;
interface
uses SDLh, uTypes;
procedure flipSurface(Surface: PSDL_Surface; Vertical: Boolean);
procedure copyRotatedSurface(src, dest: PSDL_Surface); // this is necessary since width/height are read only in SDL
procedure copyToXY(src, dest: PSDL_Surface; destX, destY: LongInt); inline;
procedure copyToXYFromRect(src, dest: PSDL_Surface; srcX, srcY, srcW, srcH, destX, destY: LongInt);
function GetSurfaceFrameCoordinateX(Surface: PSDL_Surface; Frame, frameWidth, frameHeight: LongInt): LongInt;
function GetSurfaceFrameCoordinateY(Surface: PSDL_Surface; Frame, frameHeight: LongInt): LongInt;
procedure DrawSprite2Surf(sprite: TSprite; dest: PSDL_Surface; x,y: LongInt); inline;
procedure DrawSpriteFrame2Surf(sprite: TSprite; dest: PSDL_Surface; x,y: LongInt; frame: LongInt);
procedure DrawLine2Surf(dest: PSDL_Surface; x0,y0,x1,y1:LongInt; r,g,b: byte);
procedure DrawRoundRect(rect: PSDL_Rect; BorderColor, FillColor: Longword; Surface: PSDL_Surface; Clear: boolean);
function RenderStringTex(s: ansistring; Color: Longword; font: THWFont): PTexture;
function RenderStringTexLim(s: ansistring; Color: Longword; font: THWFont; maxLength: LongWord): PTexture;
function RenderSpeechBubbleTex(s: ansistring; SpeechType: Longword; font: THWFont): PTexture;
function IsTooDarkToRead(TextColor: Longword): boolean; inline;
implementation
uses uVariables, uConsts, uTextures, SysUtils, uUtils, uDebug;
procedure DrawRoundRect(rect: PSDL_Rect; BorderColor, FillColor: Longword; Surface: PSDL_Surface; Clear: boolean);
var r: TSDL_Rect;
begin
r:= rect^;
if Clear then
SDL_FillRect(Surface, @r, SDL_MapRGBA(Surface^.format, 0, 0, 0, 0));
BorderColor:= SDL_MapRGB(Surface^.format, BorderColor shr 16, BorderColor shr 8, BorderColor and $FF);
FillColor:= SDL_MapRGB(Surface^.format, FillColor shr 16, FillColor shr 8, FillColor and $FF);
r.y:= rect^.y + cFontBorder div 2;
r.h:= rect^.h - cFontBorder;
SDL_FillRect(Surface, @r, BorderColor);
r.x:= rect^.x + cFontBorder div 2;
r.w:= rect^.w - cFontBorder;
r.y:= rect^.y;
r.h:= rect^.h;
SDL_FillRect(Surface, @r, BorderColor);
r.x:= rect^.x + cFontBorder;
r.y:= rect^.y + cFontBorder div 2;
r.w:= rect^.w - cFontBorder * 2;
r.h:= rect^.h - cFontBorder;
SDL_FillRect(Surface, @r, FillColor);
r.x:= rect^.x + cFontBorder div 2;
r.y:= rect^.y + cFontBorder;
r.w:= rect^.w - cFontBorder;
r.h:= rect^.h - cFontBorder * 2;
SDL_FillRect(Surface, @r, FillColor);
end;
(*
function WriteInRoundRect(Surface: PSDL_Surface; X, Y: LongInt; Color: LongWord; Font: THWFont; s: ansistring): TSDL_Rect;
begin
WriteInRoundRect:= WriteInRoundRect(Surface, X, Y, Color, Font, s, 0);
end;*)
function GetSurfaceFrameCoordinateX(Surface: PSDL_Surface; Frame, frameWidth, frameHeight: LongInt): LongInt;
var nx, ny: LongInt;
begin
nx:= Surface^.w div frameWidth; // number of horizontal frames
if nx = 0 then nx:= 1; // one frame is minimum
ny:= Surface^.h div frameHeight; // number of vertical frames
if ny = 0 then ny:= 1;
GetSurfaceFrameCoordinateX:= (Frame div ny) * frameWidth;
end;
function GetSurfaceFrameCoordinateY(Surface: PSDL_Surface; Frame, frameHeight: LongInt): LongInt;
var ny: LongInt;
begin
ny:= Surface^.h div frameHeight; // number of vertical frames
if ny = 0 then ny:= 1; // one frame is minimum
GetSurfaceFrameCoordinateY:= (Frame mod ny) * frameHeight;
end;
function IsTooDarkToRead(TextColor: LongWord): boolean; inline;
var clr: TSDL_Color;
begin
clr.r:= (TextColor shr 16) and $FF;
clr.g:= (TextColor shr 8) and $FF;
clr.b:= TextColor and $FF;
IsTooDarkToRead:= not ((clr.r >= cInvertTextColorAt) or (clr.g >= cInvertTextColorAt) or (clr.b >= cInvertTextColorAt));
end;
function WriteInRoundRect(Surface: PSDL_Surface; X, Y: LongInt; Color: LongWord; Font: THWFont; s: ansistring; maxLength: LongWord): TSDL_Rect;
var w, h: Longword;
tmpsurf: PSDL_Surface;
finalRect, textRect: TSDL_Rect;
clr: TSDL_Color;
begin
TTF_SizeUTF8(Fontz[Font].Handle, PChar(s), @w, @h);
if (maxLength > 0) and (w > round(maxLength * HDPIScaleFactor)) then w := round(maxLength * HDPIScaleFactor);
finalRect.x:= X;
finalRect.y:= Y;
finalRect.w:= w + cFontBorder * 2 + cFontPadding * 2;
finalRect.h:= h + cFontBorder * 2;
textRect.x:= X;
textRect.y:= Y;
textRect.w:= w;
textRect.h:= h;
clr.r:= (Color shr 16) and $FF;
clr.g:= (Color shr 8) and $FF;
clr.b:= Color and $FF;
clr.a:= $FF;
if (not IsTooDarkToRead(Color)) then
DrawRoundRect(@finalRect, cWhiteColor, cNearBlackColor, Surface, true)
else
DrawRoundRect(@finalRect, cNearBlackColor, cWhiteColor, Surface, true);
tmpsurf:= TTF_RenderUTF8_Blended(Fontz[Font].Handle, PChar(s), clr);
finalRect.x:= X + cFontBorder + cFontPadding;
finalRect.y:= Y + cFontBorder;
if SDLCheck(tmpsurf <> nil, 'TTF_RenderUTF8_Blended', true) then
exit(finalRect);
SDL_UpperBlit(tmpsurf, @textRect, Surface, @finalRect);
SDL_FreeSurface(tmpsurf);
finalRect.x:= X;
finalRect.y:= Y;
finalRect.w:= w + cFontBorder * 2 + cFontPadding * 2;
finalRect.h:= h + cFontBorder * 2;
WriteInRoundRect:= finalRect;
end;
procedure flipSurface(Surface: PSDL_Surface; Vertical: Boolean);
var y, x, i, j: LongInt;
tmpPixel: Longword;
pixels: PLongWordArray;
begin
if checkFails(Surface^.format^.BytesPerPixel = 4, 'flipSurface failed, expecting 32 bit surface', true) then
exit;
SDL_LockSurface(Surface);
pixels:= Surface^.pixels;
if Vertical then
for y := 0 to (Surface^.h div 2) - 1 do
for x := 0 to Surface^.w - 1 do
begin
i:= y * Surface^.w + x;
j:= (Surface^.h - y - 1) * Surface^.w + x;
tmpPixel:= pixels^[i];
pixels^[i]:= pixels^[j];
pixels^[j]:= tmpPixel;
end
else
for x := 0 to (Surface^.w div 2) - 1 do
for y := 0 to Surface^.h - 1 do
begin
i:= y*Surface^.w + x;
j:= y*Surface^.w + (Surface^.w - x - 1);
tmpPixel:= pixels^[i];
pixels^[i]:= pixels^[j];
pixels^[j]:= tmpPixel;
end;
SDL_UnlockSurface(Surface);
end;
procedure copyToXY(src, dest: PSDL_Surface; destX, destY: LongInt); inline;
begin
// copy from complete src
copyToXYFromRect(src, dest, 0, 0, src^.w, src^.h, destX, destY);
end;
procedure copyToXYFromRect(src, dest: PSDL_Surface; srcX, srcY, srcW, srcH, destX, destY: LongInt);
var spi, dpi, iX, iY, dX, dY, lX, lY, aT: LongInt;
srcPixels, destPixels: PLongWordArray;
rD, gD, bD, aD, rT, gT, bT: Byte;
begin
SDL_LockSurface(src);
SDL_LockSurface(dest);
srcPixels:= src^.pixels;
destPixels:= dest^.pixels;
// what's the offset between src and dest coords?
dX:= destX - srcX;
dY:= destY - srcY;
// let's figure out where the rectangle we can actually copy ends
lX:= min(srcX + srcW, src^.w) - 1;
if lX + dx >= dest^.w then lX:= dest^.w - dx - 1;
lY:= min(srcY + srcH, src^.h) - 1;
if lY + dy >= dest^.h then lY:= dest^.h - dy - 1;
for iX:= srcX to lX do
for iY:= srcY to lY do
begin
// src pixel index
spi:= iY * src^.pitch div 4 + iX;
// dest pixel index
dpi:= (iY + dY) * dest^.pitch div 4 + (iX + dX);
// get src alpha (and set it as target alpha for now)
aT:= (srcPixels^[spi] and AMask) shr AShift;
// src pixel opaque?
if aT = 255 then
begin
// just copy full pixel
destPixels^[dpi]:= srcPixels^[spi];
continue;
end;
// get dst alpha (without shift for now)
aD:= (destPixels^[dpi] and AMask) shr AShift;
// dest completely transparent?
if aD = 0 then
begin
// just copy src pixel
destPixels^[dpi]:= srcPixels^[spi];
continue;
end;
// looks like some blending is necessary
// set color of target RGB to src for now
SDL_GetRGB(srcPixels^[spi], src^.format, @rT, @gT, @bT);
SDL_GetRGB(destPixels^[dpi], dest^.format, @rD, @gD, @bD);
// note: this is not how to correctly blend RGB, just sayin' (R,G,B are not linear...)
rT:= (rD * (255 - aT) + rT * aT) div 255;
gT:= (gD * (255 - aT) + gT * aT) div 255;
bT:= (bD * (255 - aT) + bT * aT) div 255;
aT:= aD + ((255 - LongInt(aD)) * aT div 255);
destPixels^[dpi]:= SDL_MapRGBA(dest^.format, rT, gT, bT, Byte(aT));
end;
SDL_UnlockSurface(src);
SDL_UnlockSurface(dest);
end;
procedure DrawSprite2Surf(sprite: TSprite; dest: PSDL_Surface; x,y: LongInt); inline;
begin
DrawSpriteFrame2Surf(sprite, dest, x, y, 0);
end;
procedure DrawSpriteFrame2Surf(sprite: TSprite; dest: PSDL_Surface; x,y,frame: LongInt);
var numFramesFirstCol, row, col: LongInt;
begin
numFramesFirstCol:= SpritesData[sprite].imageHeight div SpritesData[sprite].Height;
row:= Frame mod numFramesFirstCol;
col:= Frame div numFramesFirstCol;
copyToXYFromRect(SpritesData[sprite].Surface, dest,
col*SpritesData[sprite].Width,
row*SpritesData[sprite].Height,
SpritesData[sprite].Width,
spritesData[sprite].Height,
x,y);
end;
procedure DrawLine2Surf(dest: PSDL_Surface; x0, y0,x1,y1: LongInt; r,g,b: byte);
var
dx,dy,err,e2,sx,sy: LongInt;
yMax: LongInt;
destPixels: PLongwordArray;
begin
//max:= (dest^.pitch div 4) * dest^.h;
yMax:= dest^.pitch div 4;
SDL_LockSurface(dest);
destPixels:= dest^.pixels;
dx:= abs(x1-x0);
dy:= abs(y1-y0);
if x0 < x1 then sx:= 1 else sx:= -1;
if y0 < y1 then sy:= 1 else sy:= -1;
err:= dx-dy;
while(true) do
begin
destPixels^[(y0 * yMax) + x0]:= SDL_MapRGB(dest^.format, r,g,b); //But will it blend? no
if (x0 = x1) and (y0 = y1) then break;
e2:= 2*err;
if e2 > -dy then
begin
err:= err - dy;
x0 := x0 + sx;
end;
if e2 < dx then
begin
err:= err + dx;
y0:=y0+sy
end;
end;
SDL_UnlockSurface(dest);
end;
procedure copyRotatedSurface(src, dest: PSDL_Surface); // this is necessary since width/height are read only in SDL, apparently
var y, x, i, j: LongInt;
srcPixels, destPixels: PLongWordArray;
begin
checkFails(src^.format^.BytesPerPixel = 4, 'rotateSurface failed, expecting 32 bit surface', true);
checkFails(dest^.format^.BytesPerPixel = 4, 'rotateSurface failed, expecting 32 bit surface', true);
if not allOK then exit;
SDL_LockSurface(src);
SDL_LockSurface(dest);
srcPixels:= src^.pixels;
destPixels:= dest^.pixels;
j:= 0;
for x := 0 to src^.w - 1 do
for y := 0 to src^.h - 1 do
begin
i:= (src^.h - 1 - y) * (src^.pitch div 4) + x;
destPixels^[j]:= srcPixels^[i];
inc(j)
end;
SDL_UnlockSurface(src);
SDL_UnlockSurface(dest);
end;
{$IFNDEF PAS2C}
// Wraps the text s by inserting breakStr as newlines with
// maximum column length maxCol.
// Same as Pascal's WrapText, but without the annoying
// behavior that text enclosed in " and ' disables word-wrapping
function SimpleWrapText(s, breakStr: string; maxCol: integer): string;
var
breakChars: set of char = [#9,' ','-'];
begin
// escape the " and ' characters before calling WrapText
// using ASCII ESC control character
s:= StringReplace(s, '"', #27+'Q', [rfReplaceAll]);
s:= StringReplace(s, '''', #27+'q', [rfReplaceAll]);
s:= WrapText(s, #1, breakChars, maxCol);
// Undo the escapes
s:= StringReplace(s, #27+'Q', '"', [rfReplaceAll]);
s:= StringReplace(s, #27+'q', '''', [rfReplaceAll]);
SimpleWrapText:= s;
end;
{$ENDIF}
function RenderStringTex(s: ansistring; Color: Longword; font: THWFont): PTexture;
begin
RenderStringTex:= RenderStringTexLim(s, Color, font, 0);
end;
function RenderStringTexLim(s: ansistring; Color: Longword; font: THWFont; maxLength: LongWord): PTexture;
var w, h: Longword;
finalSurface: PSDL_Surface;
begin
if cOnlyStats then
begin
RenderStringTexLim:= nil;
end
else
begin
if length(s) = 0 then s:= _S' ';
font:= CheckCJKFont(s, font);
w:= 0; h:= 0; // avoid compiler hints
TTF_SizeUTF8(Fontz[font].Handle, PChar(s), @w, @h);
if (maxLength > 0) and (w > round(maxLength * HDPIScaleFactor)) then w := round(maxLength * HDPIScaleFactor);
finalSurface:= SDL_CreateRGBSurface(SDL_SWSURFACE, w + cFontBorder*2 + cFontPadding*2, h + cFontBorder * 2,
32, RMask, GMask, BMask, AMask);
if checkFails(finalSurface <> nil, 'RenderString: fail to create surface', true) then
exit(nil);
WriteInRoundRect(finalSurface, 0, 0, Color, font, s, maxLength);
checkFails(SDL_SetColorKey(finalSurface, SDL_TRUE, 0) = 0, errmsgTransparentSet, false);
RenderStringTexLim:= Surface2Tex(finalSurface, false);
SDL_FreeSurface(finalSurface);
end;
end;
function GetNextSpeechLine(s: ansistring; ldelim: char; var startFrom: LongInt; out substr: ansistring): boolean;
var p, l, m, r: Integer;
newl, skip: boolean;
c : char;
begin
m:= Length(s);
substr:= '';
SetLengthA(substr, m);
// number of chars read
r:= 0;
// number of chars to be written
l:= 0;
newl:= true;
for p:= max(1, startFrom) to m do
begin
inc(r);
// read char from source string
c:= s[p];
// strip empty lines, spaces and newlines on beginnings of line
skip:= ((newl or (p = m)) and ((c = ' ') or (c = ldelim)));
if (not skip) then
begin
newl:= (c = ldelim);
// stop if we went past the end of the line
if newl then
break;
// copy current char to output substring
inc(l);
substr[l]:= c;
end;
end;
inc(startFrom, r);
SetLengthA(substr, l);
GetNextSpeechLine:= (l > 0);
end;
function RenderSpeechBubbleTex(s: ansistring; SpeechType: Longword; font: THWFont): PTexture;
var textWidth, textHeight, x, y, w, h, i, j, pos, line, numLines, edgeWidth, edgeHeight, cornerWidth, cornerHeight: LongInt;
finalSurface, tmpsurf, rotatedEdge: PSDL_Surface;
rect: TSDL_Rect;
substr: ansistring;
edge, corner, tail: TSPrite;
begin
if cOnlyStats then exit(nil);
case SpeechType of
1: begin
edge:= sprSpeechEdge;
corner:= sprSpeechCorner;
tail:= sprSpeechTail;
end;
2: begin
edge:= sprThoughtEdge;
corner:= sprThoughtCorner;
tail:= sprThoughtTail;
end;
3: begin
edge:= sprShoutEdge;
corner:= sprShoutCorner;
tail:= sprShoutTail;
end
else
exit(nil)
end;
edgeHeight:= SpritesData[edge].Height;
edgeWidth:= SpritesData[edge].Width;
cornerWidth:= SpritesData[corner].Width;
cornerHeight:= SpritesData[corner].Height;
numLines:= 0;
if length(s) = 0 then
s:= '...';
font:= CheckCJKFont(s, font);
w:= 0; h:= 0; // avoid compiler hints
TTF_SizeUTF8(Fontz[font].Handle, PChar(s), @w, @h);
if w<8 then
w:= 8;
j:= 0;
if (length(s) > 20) then
begin
w:= 0;
i:= round(Sqrt(length(s)) * 2);
{$IFNDEF PAS2C}
s:= SimpleWrapText(s, #1, i);
{$ENDIF}
pos:= 1; line:= 0;
// Find the longest line for the purposes of centring the text. Font dependant.
while GetNextSpeechLine(s, #1, pos, substr) do
begin
inc(numLines);
i:= 0; j:= 0;
TTF_SizeUTF8(Fontz[font].Handle, PChar(substr), @i, @j);
if i > w then
w:= i;
end;
end
else numLines := 1;
if numLines < 1 then
begin
s:= '...';
numLines:= 1;
end;
textWidth:=((w-(cornerWidth-edgeWidth)*2) div edgeWidth)*edgeWidth+edgeWidth;
textHeight:=(((numlines * h + 2)-((cornerHeight-edgeWidth)*2)) div edgeWidth)*edgeWidth;
textHeight:=max(textHeight,edgeWidth);
//textWidth:=max(textWidth,SpritesData[tail].Width);
rect.x:= 0;
rect.y:= 0;
rect.w:= textWidth + (cornerWidth * 2);
rect.h:= textHeight + cornerHeight*2 - edgeHeight + SpritesData[tail].Height;
//s:= inttostr(w) + ' ' + inttostr(numlines) + ' ' + inttostr(rect.x) + ' '+inttostr(rect.y) + ' ' + inttostr(rect.w) + ' ' + inttostr(rect.h);
finalSurface:= SDL_CreateRGBSurface(SDL_SWSURFACE, rect.w, rect.h, 32, RMask, GMask, BMask, AMask);
if checkFails(finalSurface <> nil, 'RenderString: fail to create surface', true) then
exit(nil);
//////////////////////////////// CORNERS ///////////////////////////////
copyToXY(SpritesData[corner].Surface, finalSurface, 0, 0); /////////////////// NW
flipSurface(SpritesData[corner].Surface, true); // store all 4 versions in memory to avoid repeated flips?
x:= 0;
y:= textHeight + cornerHeight -1;
copyToXY(SpritesData[corner].Surface, finalSurface, x, y); /////////////////// SW
flipSurface(SpritesData[corner].Surface, false);
x:= rect.w-cornerWidth-1;
y:= textHeight + cornerHeight -1;
copyToXY(SpritesData[corner].Surface, finalSurface, x, y); /////////////////// SE
flipSurface(SpritesData[corner].Surface, true);
x:= rect.w-cornerWidth-1;
y:= 0;
copyToXY(SpritesData[corner].Surface, finalSurface, x, y); /////////////////// NE
flipSurface(SpritesData[corner].Surface, false); // restore original position
//////////////////////////////// END CORNERS ///////////////////////////////
//////////////////////////////// EDGES //////////////////////////////////////
x:= cornerWidth;
y:= 0;
while x < rect.w-cornerWidth-1 do
begin
copyToXY(SpritesData[edge].Surface, finalSurface, x, y); ///////////////// top edge
inc(x,edgeWidth);
end;
flipSurface(SpritesData[edge].Surface, true);
x:= cornerWidth;
y:= textHeight + cornerHeight*2 - edgeHeight-1;
while x < rect.w-cornerWidth-1 do
begin
copyToXY(SpritesData[edge].Surface, finalSurface, x, y); ///////////////// bottom edge
inc(x,edgeWidth);
end;
flipSurface(SpritesData[edge].Surface, true); // restore original position
rotatedEdge:= SDL_CreateRGBSurface(SDL_SWSURFACE, edgeHeight, edgeWidth, 32, RMask, GMask, BMask, AMask);
x:= rect.w - edgeHeight - 1;
y:= cornerHeight;
//// initially was going to rotate in place, but the SDL spec claims width/height are read only
copyRotatedSurface(SpritesData[edge].Surface,rotatedEdge);
while y < textHeight + cornerHeight do
begin
copyToXY(rotatedEdge, finalSurface, x, y);
inc(y,edgeWidth);
end;
flipSurface(rotatedEdge, false); // restore original position
x:= 0;
y:= cornerHeight;
while y < textHeight + cornerHeight do
begin
copyToXY(rotatedEdge, finalSurface, x, y);
inc(y,edgeWidth);
end;
//////////////////////////////// END EDGES //////////////////////////////////////
x:= cornerWidth;
y:= textHeight + cornerHeight * 2 - edgeHeight - 1;
copyToXY(SpritesData[tail].Surface, finalSurface, x, y);
rect.x:= edgeHeight;
rect.y:= edgeHeight;
rect.w:= rect.w - edgeHeight * 2;
rect.h:= textHeight + cornerHeight * 2 - edgeHeight * 2;
i:= rect.w;
j:= rect.h;
SDL_FillRect(finalSurface, @rect, SDL_MapRGB(finalSurface^.format, cWhiteColor shr 16, cWhiteColor shr 8, cWhiteColor and $FF));
pos:= 1; line:= 0;
while GetNextSpeechLine(s, #1, pos, substr) do
begin
tmpsurf:= TTF_RenderUTF8_Blended(Fontz[Font].Handle, PChar(substr), cNearBlackColorChannels);
rect.x:= edgeHeight + 1 + ((i - w) div 2);
// trying to more evenly position the text, vertically
rect.y:= edgeHeight + ((j-(numLines*h)) div 2) + line * h;
if not SDLCheck(tmpsurf <> nil, 'TTF_RenderUTF8_Blended', true) then
begin
SDL_UpperBlit(tmpsurf, nil, finalSurface, @rect);
SDL_FreeSurface(tmpsurf);
end;
inc(line);
end;
RenderSpeechBubbleTex:= Surface2Tex(finalSurface, true);
SDL_FreeSurface(rotatedEdge);
SDL_FreeSurface(finalSurface);
end;
end.