SpritePtr CreateStatsSpriteClone(
SpritePtr masterSpriteP,
short numDigits,
JustifyType justification,
int fillWithZeros)
{
StatsStructPtr spriteStructP;
SpritePtr newSpriteP;
SWError err = kNoError;
SW_ASSERT(masterSpriteP != NULL);
SW_ASSERT(masterSpriteP->maxFrames >= 10);
// Allocate memory for the StatsStruct
spriteStructP = (StatsStructPtr)calloc(1,sizeof(StatsStruct));
if (!spriteStructP)
{
err = kMemoryAllocationError;
}
if (err == kNoError)
{
err = SWCloneSprite(masterSpriteP, &newSpriteP, spriteStructP);
}
if (err == kNoError)
{
// Set the Sprite's DrawProc to our special digit-drawing DrawProc.
newSpriteP->frameDrawProc = StatsItemDrawProc;
// Adjust the Sprite's width to match the width of all the digits put together.
newSpriteP->drawData->scaledWidth = SW_RECT_WIDTH(newSpriteP->destFrameRect) * numDigits;
newSpriteP->drawData->scaledHeight = SW_RECT_HEIGHT(newSpriteP->destFrameRect);
SWSetCurrentFrameIndex(newSpriteP, newSpriteP->curFrameIndex);
spriteStructP->numDigits = numDigits;
spriteStructP->theNum = -1;
spriteStructP->justification = justification;
spriteStructP->fillWithZeros = fillWithZeros;
spriteStructP->drawProc = SWStdSpriteDrawProc;
}
else
{
newSpriteP = NULL;
}
return newSpriteP;
}
SWError blitStringToFrame(
char *string,
TTF_Font *font,
int align,
int rendering,
SDL_Color *textColor,
SDL_Color *backColor,
FramePtr frameP )
{
SWError err = kNoError;
char *lineStart, *lineEnd;
SDL_Surface *textSurface = NULL, *convertedTextSurface = NULL;
int lineSkipHeight = TTF_FontLineSkip( font );
SDL_Rect destRect;
int lineWidth;
// draw the background. Transparent for solid or blended,
// solid bkgnd color for smooth.
if( rendering == STRendering_Smooth )
SDL_FillRect( frameP->frameSurfaceP, NULL,
SDL_MapRGBA( frameP->frameSurfaceP->format, backColor->r, backColor->g, backColor->b, 0xFF ) );
else
SDL_FillRect( frameP->frameSurfaceP, NULL,
SDL_MapRGBA( frameP->frameSurfaceP->format, backColor->r, backColor->g, backColor->b, 0x00 ) );
destRect.x = frameP->frameRect.left;
destRect.y = frameP->frameRect.top;
destRect.w = SW_RECT_WIDTH( frameP->frameRect );
lineStart = string;
// render each line, one at a time, and blit them over to our frame
// one after another. We have to start at the last line and work
// our way to the first, since some characters hang over to the
// line below, and we don't want those bits cut off.
while(
lineStart != NULL &&
*lineStart != '\0' &&
destRect.y < frameP->frameRect.bottom &&
err == kNoError )
{
lineEnd = strchr( lineStart, '\n' );
if( lineEnd != NULL )
{
// we need to insert a null char temporarily at the end of
// this line, so that we can render just this text.
*lineEnd = '\0';
}
TTF_SizeText( font, lineStart, &lineWidth, NULL );
switch( rendering )
{
case STRendering_Solid:
textSurface = TTF_RenderText_Solid( font, lineStart, *textColor );
break;
case STRendering_Smooth:
textSurface = TTF_RenderText_Shaded( font, lineStart, *textColor, *backColor );
break;
case STRendering_Blended:
textSurface = TTF_RenderText_Blended( font, lineStart, *textColor );
break;
}
if( textSurface == NULL )
err = kSTTextRenderingError;
if( err == kNoError )
{
// put things back the way we found them, now that
// the text has been rendered
if( lineEnd != NULL )
*lineEnd = '\n';
// convert the text surface to the display format, so we can
// blit it safely onto frameSurfaceP
convertedTextSurface = SDL_ConvertSurface(
textSurface,
frameP->frameSurfaceP->format,
SDL_SWSURFACE );
if( convertedTextSurface == NULL )
err = kSTTextRenderingError;
}
if( err == kNoError )
{
switch( align )
{
case STAlign_Left:
destRect.x = 0;
break;
case STAlign_Center:
destRect.x = (frameP->frameRect.right / 2) - (lineWidth / 2);
break;
case STAlign_Right:
destRect.x = frameP->frameRect.right - lineWidth;
break;
}
// if we don't unset the SRCALPHA flag, then the dest
// surface alpha will remain untouched, and our text
// wont show up using a std blit. This is the way SDL
// is designed, although it is aknowledged to be
// counterintuitive in the docs.
if( SDL_SetAlpha( convertedTextSurface, 0, 0xFF ) < 0 )
err = kSTTextRenderingError;
if( SDL_SetColorKey( convertedTextSurface, SDL_SRCCOLORKEY,
SDL_MapRGBA( convertedTextSurface->format, 0xFF, 0xFF, 0xFF, 0x00 ) ) < 0 )
err = kSTTextRenderingError;
}
// we use our own function for alpha bending since for
// a RGBA to RGBA blit, SDL either leaves the dest alpha
// untouched (if SRCALPHA is set), or replaces it completely
// with the source alpha (if SRCALPHA is not set). In the first
// option the text doesnt show up at all, and in the second hanging
// characters such as 'g' and 'j' have their bottoms cut off
// when the next line is blit. So we do our own blit pixel-by-pixel,
// 'alpha-bending' (taking the max of src/dest alphas) as we go.
// FWIK, this is rediculously slow on HW surfaces, but until
// somebody comesup with a better solution...
if( err == kNoError )
{
if( rendering == STRendering_Blended || rendering == STRendering_Solid )
alphaBlendTextSurfaceToFrame( convertedTextSurface, frameP->frameSurfaceP, &destRect );
else
{
if( err == kNoError )
if( SDL_BlitSurface( convertedTextSurface, NULL, frameP->frameSurfaceP, &destRect ) < 0 )
err = kSTTextRenderingError;
}
}
if( err == kNoError )
{
if( lineEnd == NULL )
lineStart = NULL;
else
lineStart = lineEnd + 1;
destRect.y += lineSkipHeight;
}
if( textSurface ) SDL_FreeSurface( textSurface );
if( convertedTextSurface ) SDL_FreeSurface( convertedTextSurface );
}
return err;
}
SWError st_CreateStaticText(
const char* string,
const char* fontPath,
int fontSize,
SWRect* bounds,
int wrap,
StaticTextPtr* newStaticTextPP )
{
SWError err = kNoError;
FramePtr frameP = NULL;
StaticTextPtr tempStaticTextP = NULL;
*newStaticTextPP = 0;
if( ! gSTHasBeenInitialized )
err = kSTHasNotBeenInitedError;
if( err == kNoError )
if( strlen( string ) > kMaxStringLength - 1 )
err = kSTStringTooLongError;
if( err == kNoError )
if( strlen( fontPath ) > kMaxPathLength - 1 )
err = kSTPathTooLongError;
if( err == kNoError )
{
tempStaticTextP = malloc( sizeof( StaticTextRec ) );
if( ! tempStaticTextP ) err = kMemoryAllocationError;
}
if( err == kNoError )
err = SWCreateSprite( (SpritePtr*)&tempStaticTextP, tempStaticTextP, 1 );
if( err == kNoError )
{
SWSetSpriteMoveProc( (SpritePtr)tempStaticTextP, handleStaticText );
// make the frame to which we will be copying each line of text
err = SWCreateBlankFrame(
&frameP,
SW_RECT_WIDTH( *bounds ),
SW_RECT_HEIGHT( *bounds ),
SDL_GetVideoInfo()->vfmt->BitsPerPixel,
true );
}
if( err == kNoError )
{
SWSetSpriteLocation( (SpritePtr)tempStaticTextP, bounds->left, bounds->top );
err = SWAddFrame( (SpritePtr)tempStaticTextP, frameP );
}
if( err == kNoError )
{
strcpy( tempStaticTextP->string, string );
strcpy( tempStaticTextP->fontPath, fontPath );
tempStaticTextP->fontSize = fontSize;
tempStaticTextP->fontStyle = gDefaultStyle;
tempStaticTextP->wrap = wrap;
tempStaticTextP->bounds = *bounds;
tempStaticTextP->align = gDefaultAlign;
tempStaticTextP->rendering = gDefaultRendering;
tempStaticTextP->textColor = gDefaultTextColor;
tempStaticTextP->backColor = gDefaultBackColor;
err = SWSetCurrentFrameIndex( (SpritePtr)tempStaticTextP, 0 );
}
if( err == kNoError )
err = renderStaticText( tempStaticTextP );
if( err == kNoError )
{
SWLockSprite( (SpritePtr)tempStaticTextP );
*newStaticTextPP = tempStaticTextP;
}
if( err != kNoError )
{
// clean up what we can
if( tempStaticTextP ) st_DisposeStaticText( &tempStaticTextP );
if( frameP ) SWDisposeFrame( &frameP );
}
SWSetStickyIfError( err );
return err;
}
void StatsItemDrawProc(
FramePtr srcFrameP,
FramePtr dstFrameP,
SWRect* srcRectP,
SWRect* dstRectP)
{
short n, theDigit, width, index, fillValue;
long theNum;
char digitArray[10]; // Enough digits for a long
StatsStructPtr statsStructP;
FramePtr *srcFrameArray;
SWRect destRect, srcRect, frameRect, clippedDstRect;
SW_ASSERT(gSWCurrentElementDrawData != NULL);
statsStructP = (StatsStructPtr)gSWCurrentElementDrawData->parentSpriteP;
srcFrameArray = gSWCurrentElementDrawData->parentSpriteP->frameArray;
theNum = statsStructP->theNum;
if (statsStructP->fillWithZeros)
fillValue = 0;
else
fillValue = -1;
// Fill the unused part of the display with either nothing or 0s.
for (n=0; n < statsStructP->numDigits; n++)
digitArray[n] = fillValue;
// Put the number into the digitArray
if (theNum >= 0)
{
if (statsStructP->justification == kLeftJustify)
index = GetNumberLength(theNum)-1;
else
index = statsStructP->numDigits-1;
do
{ // Fill digitArray with the digits from the new number
digitArray[index] = theNum%10; // Get the right-most digit
index--;
theNum /= 10; // Remove the right-most digit
} while (theNum > 0 && index >= 0);
}
destRect = *dstRectP;
frameRect = srcFrameArray[0]->frameRect;
width = SW_RECT_WIDTH(frameRect);
// Expand destRect's left and top to its original size before it was clipped
if (srcRectP->top > frameRect.top)
destRect.top += frameRect.top - srcRectP->top;
if (srcRectP->left > frameRect.left)
destRect.left += frameRect.left - srcRectP->left;
// The destRect's width and height should be the size of one digit.
destRect.bottom = destRect.top + SW_RECT_HEIGHT(frameRect);
destRect.right = destRect.left + width;
// Draw the number
for (index = 0; index < statsStructP->numDigits; index++)
{
theDigit = digitArray[index];
if (theDigit >= 0)
{
srcFrameP = srcFrameArray[theDigit];
srcRect = srcFrameP->frameRect;
// Clip each digit with the dstRect passed to this drawProc.
clippedDstRect = destRect;
SW_CLIP_DST_AND_SRC_RECT(clippedDstRect, srcRect, (*dstRectP));
// Set the sprite's location (used by hardware drawprocs)
gSWCurrentElementDrawData->horizLoc = clippedDstRect.left;
gSWCurrentElementDrawData->vertLoc = clippedDstRect.top;
if (gSWCurrentSpriteWorld != NULL)
{
gSWCurrentElementDrawData->horizLoc += gSWCurrentSpriteWorld->visScrollRect.left;
gSWCurrentElementDrawData->vertLoc += gSWCurrentSpriteWorld->visScrollRect.top;
}
// Draw the digit
(*statsStructP->drawProc)(srcFrameP, dstFrameP, &srcRect, &clippedDstRect);
}
destRect.left += width;
destRect.right += width;
}
}