/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% R e a d G R A D I E N T I m a g e %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% ReadGRADIENTImage creates a gradient image and initializes it to
% the color range as specified by the filename. It allocates the memory
% necessary for the new Image structure and returns a pointer to the new
% image.
%
% The format of the ReadGRADIENTImage method is:
%
% Image *ReadGRADIENTImage(const ImageInfo *image_info,
% ExceptionInfo *exception)
%
% A description of each parameter follows:
%
% o image_info: the image info.
%
% o exception: return any errors or warnings in this structure.
%
*/
static Image *ReadGRADIENTImage(const ImageInfo *image_info,
ExceptionInfo *exception)
{
char
colorname[MaxTextExtent];
Image
*image;
MagickBooleanType
status;
PixelInfo
start_color,
stop_color;
/*
Initialize Image structure.
*/
assert(image_info != (const ImageInfo *) NULL);
assert(image_info->signature == MagickSignature);
if (image_info->debug != MagickFalse)
(void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",
image_info->filename);
assert(exception != (ExceptionInfo *) NULL);
assert(exception->signature == MagickSignature);
image=AcquireImage(image_info,exception);
if ((image->columns == 0) || (image->rows == 0))
ThrowReaderException(OptionError,"MustSpecifyImageSize");
(void) SetImageAlpha(image,(Quantum) TransparentAlpha,exception);
(void) CopyMagickString(image->filename,image_info->filename,MaxTextExtent);
(void) CopyMagickString(colorname,image_info->filename,MaxTextExtent);
(void) sscanf(image_info->filename,"%[^-]",colorname);
status=QueryColorCompliance(colorname,AllCompliance,&start_color,exception);
if (status == MagickFalse)
{
image=DestroyImage(image);
return((Image *) NULL);
}
(void) CopyMagickString(colorname,"white",MaxTextExtent);
if (GetPixelInfoIntensity(&start_color) > (Quantum) (QuantumRange/2))
(void) CopyMagickString(colorname,"black",MaxTextExtent);
(void) sscanf(image_info->filename,"%*[^-]-%s",colorname);
status=QueryColorCompliance(colorname,AllCompliance,&stop_color,exception);
if (status == MagickFalse)
{
image=DestroyImage(image);
return((Image *) NULL);
}
(void) GradientImage(image,LocaleCompare(image_info->magick,"GRADIENT") == 0 ?
LinearGradient : RadialGradient,PadSpread,&start_color,&stop_color,
exception);
return(GetFirstImageInList(image));
}
static Image *ReadXPMImage(const ImageInfo *image_info,ExceptionInfo *exception)
{
char
*grey,
key[MaxTextExtent],
target[MaxTextExtent],
*xpm_buffer;
Image
*image;
MagickBooleanType
active,
status;
register char
*next,
*p,
*q;
register IndexPacket
*indexes;
register ssize_t
x;
register PixelPacket
*r;
size_t
length;
SplayTreeInfo
*xpm_colors;
ssize_t
count,
j,
y;
unsigned long
colors,
columns,
rows,
width;
/*
Open image file.
*/
assert(image_info != (const ImageInfo *) NULL);
assert(image_info->signature == MagickSignature);
if (image_info->debug != MagickFalse)
(void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",
image_info->filename);
assert(exception != (ExceptionInfo *) NULL);
assert(exception->signature == MagickSignature);
image=AcquireImage(image_info);
status=OpenBlob(image_info,image,ReadBinaryBlobMode,exception);
if (status == MagickFalse)
{
image=DestroyImageList(image);
return((Image *) NULL);
}
/*
Read XPM file.
*/
length=MaxTextExtent;
xpm_buffer=(char *) AcquireQuantumMemory((size_t) length,sizeof(*xpm_buffer));
if (xpm_buffer == (char *) NULL)
ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
*xpm_buffer='\0';
p=xpm_buffer;
while (ReadBlobString(image,p) != (char *) NULL)
{
if ((*p == '#') && ((p == xpm_buffer) || (*(p-1) == '\n')))
continue;
if ((*p == '}') && (*(p+1) == ';'))
break;
p+=strlen(p);
if ((size_t) (p-xpm_buffer+MaxTextExtent) < length)
continue;
length<<=1;
xpm_buffer=(char *) ResizeQuantumMemory(xpm_buffer,length+MaxTextExtent,
sizeof(*xpm_buffer));
if (xpm_buffer == (char *) NULL)
break;
p=xpm_buffer+strlen(xpm_buffer);
}
if (xpm_buffer == (char *) NULL)
ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
/*
Remove comments.
*/
count=0;
width=0;
for (p=xpm_buffer; *p != '\0'; p++)
{
if (*p != '"')
continue;
count=(ssize_t) sscanf(p+1,"%lu %lu %lu %lu",&columns,&rows,&colors,&width);
image->columns=columns;
image->rows=rows;
image->colors=colors;
if (count == 4)
break;
}
if ((count != 4) || (width > 10) || (image->columns == 0) ||
(image->rows == 0) || (image->colors == 0))
{
xpm_buffer=DestroyString(xpm_buffer);
ThrowReaderException(CorruptImageError,"ImproperImageHeader");
}
/*
Remove unquoted characters.
*/
active=MagickFalse;
q=xpm_buffer;
while (*p != '\0')
{
if (*p++ == '"')
{
if (active != MagickFalse)
*q++='\n';
active=active != MagickFalse ? MagickFalse : MagickTrue;
}
if (active != MagickFalse)
*q++=(*p);
}
*q='\0';
/*
Initialize image structure.
*/
xpm_colors=NewSplayTree(CompareXPMColor,RelinquishMagickMemory,
(void *(*)(void *)) NULL);
if (AcquireImageColormap(image,image->colors) == MagickFalse)
{
xpm_buffer=DestroyString(xpm_buffer);
ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
}
/*
Read image colormap.
*/
image->depth=1;
next=NextXPMLine(xpm_buffer);
for (j=0; (j < (ssize_t) image->colors) && (next != (char *) NULL); j++)
{
MagickPixelPacket
pixel;
p=next;
next=NextXPMLine(p);
(void) CopyXPMColor(key,p,MagickMin((size_t) width,MaxTextExtent-1));
status=AddValueToSplayTree(xpm_colors,ConstantString(key),(void *) j);
/*
Parse color.
*/
(void) CopyMagickString(target,"gray",MaxTextExtent);
q=ParseXPMColor(p+width,MagickTrue);
if (q != (char *) NULL)
{
while ((isspace((int) ((unsigned char) *q)) == 0) && (*q != '\0'))
q++;
if ((next-q) < 0)
break;
if (next != (char *) NULL)
(void) CopyXPMColor(target,q,MagickMin((size_t) (next-q),
MaxTextExtent-1));
else
(void) CopyMagickString(target,q,MaxTextExtent);
q=ParseXPMColor(target,MagickFalse);
if (q != (char *) NULL)
*q='\0';
}
StripString(target);
grey=strstr(target,"grey");
if (grey != (char *) NULL)
grey[2]='a';
if (LocaleCompare(target,"none") == 0)
{
image->storage_class=DirectClass;
image->matte=MagickTrue;
}
status=QueryColorCompliance(target,XPMCompliance,&image->colormap[j],
exception);
if (status == MagickFalse)
break;
(void) QueryMagickColorCompliance(target,XPMCompliance,&pixel,exception);
if (image->depth < pixel.depth)
image->depth=pixel.depth;
}
if (j < (ssize_t) image->colors)
{
xpm_colors=DestroySplayTree(xpm_colors);
xpm_buffer=DestroyString(xpm_buffer);
ThrowReaderException(CorruptImageError,"CorruptImage");
}
j=0;
if (image_info->ping == MagickFalse)
{
/*
Read image pixels.
*/
status=SetImageExtent(image,image->columns,image->rows);
if (status == MagickFalse)
{
InheritException(exception,&image->exception);
return(DestroyImageList(image));
}
for (y=0; y < (ssize_t) image->rows; y++)
{
p=NextXPMLine(p);
if (p == (char *) NULL)
break;
r=QueueAuthenticPixels(image,0,y,image->columns,1,exception);
if (r == (PixelPacket *) NULL)
break;
indexes=GetAuthenticIndexQueue(image);
for (x=0; x < (ssize_t) image->columns; x++)
{
ssize_t count=CopyXPMColor(key,p,MagickMin(width,MaxTextExtent-1));
if (count != (ssize_t) width)
break;
j=(ssize_t) GetValueFromSplayTree(xpm_colors,key);
if (image->storage_class == PseudoClass)
SetPixelIndex(indexes+x,j);
*r=image->colormap[j];
p+=count;
r++;
}
if (x < (ssize_t) image->columns)
break;
if (SyncAuthenticPixels(image,exception) == MagickFalse)
break;
}
if (y < (ssize_t) image->rows)
{
xpm_colors=DestroySplayTree(xpm_colors);
xpm_buffer=DestroyString(xpm_buffer);
ThrowReaderException(CorruptImageError,"NotEnoughPixelData");
}
}
/*
Relinquish resources.
*/
xpm_colors=DestroySplayTree(xpm_colors);
xpm_buffer=DestroyString(xpm_buffer);
(void) CloseBlob(image);
return(GetFirstImageInList(image));
}
/* %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % % % % % % W r i t e H I S T O G R A M I m a g e % % % % % % % %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % WriteHISTOGRAMImage() writes an image to a file in Histogram format. % The image shows a histogram of the color (or gray) values in the image. The % image consists of three overlaid histograms: a red one for the red channel, % a green one for the green channel, and a blue one for the blue channel. The % image comment contains a list of unique pixel values and the number of times % each occurs in the image. % % This method is strongly based on a similar one written by % [email protected] which in turn is based on ppmhistmap of netpbm. % % The format of the WriteHISTOGRAMImage method is: % % MagickBooleanType WriteHISTOGRAMImage(const ImageInfo *image_info, % Image *image,ExceptionInfo *exception) % % A description of each parameter follows. % % o image_info: the image info. % % o image: The image. % % o exception: return any errors or warnings in this structure. % */ static MagickBooleanType WriteHISTOGRAMImage(const ImageInfo *image_info, Image *image,ExceptionInfo *exception) { #define HistogramDensity "256x200" char filename[MagickPathExtent]; const char *option; Image *histogram_image; ImageInfo *write_info; MagickBooleanType status; PixelInfo *histogram; double maximum, scale; RectangleInfo geometry; register const Quantum *p; register Quantum *q, *r; register ssize_t x; size_t length; ssize_t y; /* Allocate histogram image. */ assert(image_info != (const ImageInfo *) NULL); assert(image_info->signature == MagickCoreSignature); assert(image != (Image *) NULL); assert(image->signature == MagickCoreSignature); if (image->debug != MagickFalse) (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s", image_info->filename); SetGeometry(image,&geometry); if (image_info->density == (char *) NULL) (void) ParseAbsoluteGeometry(HistogramDensity,&geometry); else (void) ParseAbsoluteGeometry(image_info->density,&geometry); histogram_image=CloneImage(image,geometry.width,geometry.height,MagickTrue, exception); if (histogram_image == (Image *) NULL) ThrowWriterException(ResourceLimitError,"MemoryAllocationFailed"); (void) SetImageStorageClass(histogram_image,DirectClass,exception); /* Allocate histogram count arrays. */ length=MagickMax((size_t) ScaleQuantumToChar(QuantumRange)+1UL, histogram_image->columns); histogram=(PixelInfo *) AcquireQuantumMemory(length,sizeof(*histogram)); if (histogram == (PixelInfo *) NULL) { histogram_image=DestroyImage(histogram_image); ThrowWriterException(ResourceLimitError,"MemoryAllocationFailed"); } /* Initialize histogram count arrays. */ (void) ResetMagickMemory(histogram,0,length*sizeof(*histogram)); for (y=0; y < (ssize_t) image->rows; y++) { p=GetVirtualPixels(image,0,y,image->columns,1,exception); if (p == (const Quantum *) NULL) break; for (x=0; x < (ssize_t) image->columns; x++) { if ((GetPixelRedTraits(image) & UpdatePixelTrait) != 0) histogram[ScaleQuantumToChar(GetPixelRed(image,p))].red++; if ((GetPixelGreenTraits(image) & UpdatePixelTrait) != 0) histogram[ScaleQuantumToChar(GetPixelGreen(image,p))].green++; if ((GetPixelBlueTraits(image) & UpdatePixelTrait) != 0) histogram[ScaleQuantumToChar(GetPixelBlue(image,p))].blue++; p+=GetPixelChannels(image); } } maximum=histogram[0].red; for (x=0; x < (ssize_t) histogram_image->columns; x++) { if (((GetPixelRedTraits(image) & UpdatePixelTrait) != 0) && (maximum < histogram[x].red)) maximum=histogram[x].red; if (((GetPixelGreenTraits(image) & UpdatePixelTrait) != 0) && (maximum < histogram[x].green)) maximum=histogram[x].green; if (((GetPixelBlueTraits(image) & UpdatePixelTrait) != 0) && (maximum < histogram[x].blue)) maximum=histogram[x].blue; } scale=0.0; if (fabs(maximum) >= MagickEpsilon) scale=(double) histogram_image->rows/maximum; /* Initialize histogram image. */ (void) QueryColorCompliance("#000000",AllCompliance, &histogram_image->background_color,exception); (void) SetImageBackgroundColor(histogram_image,exception); for (x=0; x < (ssize_t) histogram_image->columns; x++) { q=GetAuthenticPixels(histogram_image,x,0,1,histogram_image->rows,exception); if (q == (Quantum *) NULL) break; if ((GetPixelRedTraits(image) & UpdatePixelTrait) != 0) { y=(ssize_t) ceil(histogram_image->rows-scale*histogram[x].red-0.5); r=q+y*GetPixelChannels(histogram_image); for ( ; y < (ssize_t) histogram_image->rows; y++) { SetPixelRed(histogram_image,QuantumRange,r); r+=GetPixelChannels(histogram_image); } } if ((GetPixelGreenTraits(image) & UpdatePixelTrait) != 0) { y=(ssize_t) ceil(histogram_image->rows-scale*histogram[x].green-0.5); r=q+y*GetPixelChannels(histogram_image); for ( ; y < (ssize_t) histogram_image->rows; y++) { SetPixelGreen(histogram_image,QuantumRange,r); r+=GetPixelChannels(histogram_image); } } if ((GetPixelBlueTraits(image) & UpdatePixelTrait) != 0) { y=(ssize_t) ceil(histogram_image->rows-scale*histogram[x].blue-0.5); r=q+y*GetPixelChannels(histogram_image); for ( ; y < (ssize_t) histogram_image->rows; y++) { SetPixelBlue(histogram_image,QuantumRange,r); r+=GetPixelChannels(histogram_image); } } if (SyncAuthenticPixels(histogram_image,exception) == MagickFalse) break; status=SetImageProgress(image,SaveImageTag,y,histogram_image->rows); if (status == MagickFalse) break; } histogram=(PixelInfo *) RelinquishMagickMemory(histogram); option=GetImageOption(image_info,"histogram:unique-colors"); if ((option == (const char *) NULL) || (IsStringTrue(option) != MagickFalse)) { FILE *file; int unique_file; /* Add a unique colors as an image comment. */ file=(FILE *) NULL; unique_file=AcquireUniqueFileResource(filename); if (unique_file != -1) file=fdopen(unique_file,"wb"); if ((unique_file != -1) && (file != (FILE *) NULL)) { char *property; (void) GetNumberColors(image,file,exception); (void) fclose(file); property=FileToString(filename,~0UL,exception); if (property != (char *) NULL) { (void) SetImageProperty(histogram_image,"comment",property, exception); property=DestroyString(property); } } (void) RelinquishUniqueFileResource(filename); } /* Write Histogram image. */ (void) CopyMagickString(histogram_image->filename,image_info->filename, MagickPathExtent); write_info=CloneImageInfo(image_info); *write_info->magick='\0'; (void) SetImageInfo(write_info,1,exception); if ((*write_info->magick == '\0') || (LocaleCompare(write_info->magick,"HISTOGRAM") == 0)) (void) FormatLocaleString(histogram_image->filename,MagickPathExtent, "miff:%s",write_info->filename); histogram_image->blob=DetachBlob(histogram_image->blob); histogram_image->blob=CloneBlobInfo(image->blob); status=WriteImage(write_info,histogram_image,exception); image->blob=DetachBlob(image->blob); image->blob=CloneBlobInfo(histogram_image->blob); histogram_image=DestroyImage(histogram_image); write_info=DestroyImageInfo(write_info); return(status); }
MagickExport Image *MontageImageList(const ImageInfo *image_info,
const MontageInfo *montage_info,const Image *images,ExceptionInfo *exception)
{
#define MontageImageTag "Montage/Image"
#define TileImageTag "Tile/Image"
char
tile_geometry[MagickPathExtent],
*title;
const char
*value;
DrawInfo
*draw_info;
FrameInfo
frame_info;
Image
*image,
**image_list,
**master_list,
*montage,
*texture,
*tile_image,
*thumbnail;
ImageInfo
*clone_info;
MagickBooleanType
concatenate,
proceed,
status;
MagickOffsetType
tiles;
MagickProgressMonitor
progress_monitor;
MagickStatusType
flags;
register ssize_t
i;
RectangleInfo
bounds,
geometry,
extract_info;
size_t
border_width,
extent,
height,
images_per_page,
max_height,
number_images,
number_lines,
sans,
tiles_per_column,
tiles_per_page,
tiles_per_row,
title_offset,
total_tiles,
width;
ssize_t
bevel_width,
tile,
x,
x_offset,
y,
y_offset;
TypeMetric
metrics;
/*
Create image tiles.
*/
assert(images != (Image *) NULL);
assert(images->signature == MagickCoreSignature);
if (images->debug != MagickFalse)
(void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",images->filename);
assert(montage_info != (MontageInfo *) NULL);
assert(montage_info->signature == MagickCoreSignature);
assert(exception != (ExceptionInfo *) NULL);
assert(exception->signature == MagickCoreSignature);
number_images=GetImageListLength(images);
master_list=ImageListToArray(images,exception);
image_list=master_list;
image=image_list[0];
if (master_list == (Image **) NULL)
ThrowImageException(ResourceLimitError,"MemoryAllocationFailed");
thumbnail=NewImageList();
for (i=0; i < (ssize_t) number_images; i++)
{
image=CloneImage(image_list[i],0,0,MagickTrue,exception);
if (image == (Image *) NULL)
break;
(void) ParseAbsoluteGeometry("0x0+0+0",&image->page);
progress_monitor=SetImageProgressMonitor(image,(MagickProgressMonitor) NULL,
image->client_data);
flags=ParseRegionGeometry(image,montage_info->geometry,&geometry,exception);
thumbnail=ThumbnailImage(image,geometry.width,geometry.height,exception);
if (thumbnail == (Image *) NULL)
break;
image_list[i]=thumbnail;
(void) SetImageProgressMonitor(image,progress_monitor,image->client_data);
proceed=SetImageProgress(image,TileImageTag,(MagickOffsetType) i,
number_images);
if (proceed == MagickFalse)
break;
image=DestroyImage(image);
}
if (i < (ssize_t) number_images)
{
if (thumbnail == (Image *) NULL)
i--;
for (tile=0; (ssize_t) tile <= i; tile++)
if (image_list[tile] != (Image *) NULL)
image_list[tile]=DestroyImage(image_list[tile]);
master_list=(Image **) RelinquishMagickMemory(master_list);
return((Image *) NULL);
}
/*
Sort image list by increasing tile number.
*/
for (i=0; i < (ssize_t) number_images; i++)
if (image_list[i]->scene == 0)
break;
if (i == (ssize_t) number_images)
qsort((void *) image_list,(size_t) number_images,sizeof(*image_list),
SceneCompare);
/*
Determine tiles per row and column.
*/
tiles_per_column=(size_t) sqrt((double) number_images);
tiles_per_row=(size_t) ceil((double) number_images/tiles_per_column);
x_offset=0;
y_offset=0;
if (montage_info->tile != (char *) NULL)
GetMontageGeometry(montage_info->tile,number_images,&x_offset,&y_offset,
&tiles_per_column,&tiles_per_row);
/*
Determine tile sizes.
*/
concatenate=MagickFalse;
SetGeometry(image_list[0],&extract_info);
extract_info.x=(ssize_t) montage_info->border_width;
extract_info.y=(ssize_t) montage_info->border_width;
if (montage_info->geometry != (char *) NULL)
{
/*
Initialize tile geometry.
*/
flags=GetGeometry(montage_info->geometry,&extract_info.x,&extract_info.y,
&extract_info.width,&extract_info.height);
concatenate=((flags & RhoValue) == 0) && ((flags & SigmaValue) == 0) ?
MagickTrue : MagickFalse;
}
border_width=montage_info->border_width;
bevel_width=0;
(void) ResetMagickMemory(&frame_info,0,sizeof(frame_info));
if (montage_info->frame != (char *) NULL)
{
char
absolute_geometry[MagickPathExtent];
frame_info.width=extract_info.width;
frame_info.height=extract_info.height;
(void) FormatLocaleString(absolute_geometry,MagickPathExtent,"%s!",
montage_info->frame);
flags=ParseMetaGeometry(absolute_geometry,&frame_info.outer_bevel,
&frame_info.inner_bevel,&frame_info.width,&frame_info.height);
if ((flags & HeightValue) == 0)
frame_info.height=frame_info.width;
if ((flags & XiValue) == 0)
frame_info.outer_bevel=(ssize_t) frame_info.width/2-1;
if ((flags & PsiValue) == 0)
frame_info.inner_bevel=frame_info.outer_bevel;
frame_info.x=(ssize_t) frame_info.width;
frame_info.y=(ssize_t) frame_info.height;
bevel_width=(ssize_t) MagickMax(frame_info.inner_bevel,
frame_info.outer_bevel);
border_width=(size_t) MagickMax((ssize_t) frame_info.width,
(ssize_t) frame_info.height);
}
for (i=0; i < (ssize_t) number_images; i++)
{
if (image_list[i]->columns > extract_info.width)
extract_info.width=image_list[i]->columns;
if (image_list[i]->rows > extract_info.height)
extract_info.height=image_list[i]->rows;
}
/*
Initialize draw attributes.
*/
clone_info=CloneImageInfo(image_info);
clone_info->background_color=montage_info->background_color;
clone_info->border_color=montage_info->border_color;
draw_info=CloneDrawInfo(clone_info,(DrawInfo *) NULL);
if (montage_info->font != (char *) NULL)
(void) CloneString(&draw_info->font,montage_info->font);
if (montage_info->pointsize != 0.0)
draw_info->pointsize=montage_info->pointsize;
draw_info->gravity=CenterGravity;
draw_info->stroke=montage_info->stroke;
draw_info->fill=montage_info->fill;
draw_info->text=AcquireString("");
(void) GetTypeMetrics(image_list[0],draw_info,&metrics,exception);
texture=NewImageList();
if (montage_info->texture != (char *) NULL)
{
(void) CopyMagickString(clone_info->filename,montage_info->texture,
MagickPathExtent);
texture=ReadImage(clone_info,exception);
}
/*
Determine the number of lines in an next label.
*/
title=InterpretImageProperties(clone_info,image_list[0],montage_info->title,
exception);
title_offset=0;
if (montage_info->title != (char *) NULL)
title_offset=(size_t) (2*(metrics.ascent-metrics.descent)*
MultilineCensus(title)+2*extract_info.y);
number_lines=0;
for (i=0; i < (ssize_t) number_images; i++)
{
value=GetImageProperty(image_list[i],"label",exception);
if (value == (const char *) NULL)
continue;
if (MultilineCensus(value) > number_lines)
number_lines=MultilineCensus(value);
}
/*
Allocate next structure.
*/
tile_image=AcquireImage((ImageInfo *) NULL,exception);
montage=AcquireImage(clone_info,exception);
montage->background_color=montage_info->background_color;
montage->scene=0;
images_per_page=(number_images-1)/(tiles_per_row*tiles_per_column)+1;
tiles=0;
total_tiles=(size_t) number_images;
for (i=0; i < (ssize_t) images_per_page; i++)
{
/*
Determine bounding box.
*/
tiles_per_page=tiles_per_row*tiles_per_column;
x_offset=0;
y_offset=0;
if (montage_info->tile != (char *) NULL)
GetMontageGeometry(montage_info->tile,number_images,&x_offset,&y_offset,
&sans,&sans);
tiles_per_page=tiles_per_row*tiles_per_column;
y_offset+=(ssize_t) title_offset;
max_height=0;
bounds.width=0;
bounds.height=0;
width=0;
for (tile=0; tile < (ssize_t) tiles_per_page; tile++)
{
if (tile < (ssize_t) number_images)
{
width=concatenate != MagickFalse ? image_list[tile]->columns :
extract_info.width;
if (image_list[tile]->rows > max_height)
max_height=image_list[tile]->rows;
}
x_offset+=(ssize_t) (width+2*(extract_info.x+border_width));
if (x_offset > (ssize_t) bounds.width)
bounds.width=(size_t) x_offset;
if (((tile+1) == (ssize_t) tiles_per_page) ||
(((tile+1) % tiles_per_row) == 0))
{
x_offset=0;
if (montage_info->tile != (char *) NULL)
GetMontageGeometry(montage_info->tile,number_images,&x_offset,&y,
&sans,&sans);
height=concatenate != MagickFalse ? max_height : extract_info.height;
y_offset+=(ssize_t) (height+(extract_info.y+(ssize_t) border_width)*2+
(metrics.ascent-metrics.descent+4)*number_lines+
(montage_info->shadow != MagickFalse ? 4 : 0));
if (y_offset > (ssize_t) bounds.height)
bounds.height=(size_t) y_offset;
max_height=0;
}
}
if (montage_info->shadow != MagickFalse)
bounds.width+=4;
/*
Initialize montage image.
*/
(void) CopyMagickString(montage->filename,montage_info->filename,
MagickPathExtent);
montage->columns=(size_t) MagickMax((ssize_t) bounds.width,1);
montage->rows=(size_t) MagickMax((ssize_t) bounds.height,1);
(void) SetImageBackgroundColor(montage,exception);
/*
Set montage geometry.
*/
montage->montage=AcquireString((char *) NULL);
tile=0;
extent=1;
while (tile < MagickMin((ssize_t) tiles_per_page,(ssize_t) number_images))
{
extent+=strlen(image_list[tile]->filename)+1;
tile++;
}
montage->directory=(char *) AcquireQuantumMemory(extent,
sizeof(*montage->directory));
if ((montage->montage == (char *) NULL) ||
(montage->directory == (char *) NULL))
{
if (montage->montage != (char *) NULL)
montage->montage=(char *) RelinquishMagickMemory(montage->montage);
if (montage->directory != (char *) NULL)
montage->directory=(char *) RelinquishMagickMemory(
montage->directory);
ThrowImageException(ResourceLimitError,"MemoryAllocationFailed");
}
x_offset=0;
y_offset=0;
if (montage_info->tile != (char *) NULL)
GetMontageGeometry(montage_info->tile,number_images,&x_offset,&y_offset,
&sans,&sans);
y_offset+=(ssize_t) title_offset;
(void) FormatLocaleString(montage->montage,MagickPathExtent,
"%.20gx%.20g%+.20g%+.20g",(double) (extract_info.width+
(extract_info.x+border_width)*2),(double) (extract_info.height+
(extract_info.y+border_width)*2+(double) ((metrics.ascent-
metrics.descent+4)*number_lines+(montage_info->shadow != MagickFalse ? 4 :
0))),(double) x_offset,(double) y_offset);
*montage->directory='\0';
tile=0;
while (tile < MagickMin((ssize_t) tiles_per_page,(ssize_t) number_images))
{
(void) ConcatenateMagickString(montage->directory,
image_list[tile]->filename,extent);
(void) ConcatenateMagickString(montage->directory,"\n",extent);
tile++;
}
progress_monitor=SetImageProgressMonitor(montage,(MagickProgressMonitor)
NULL,montage->client_data);
if (texture != (Image *) NULL)
(void) TextureImage(montage,texture,exception);
if (montage_info->title != (char *) NULL)
{
DrawInfo
*draw_clone_info;
TypeMetric
tile_metrics;
/*
Annotate composite image with title.
*/
draw_clone_info=CloneDrawInfo(image_info,draw_info);
draw_clone_info->gravity=CenterGravity;
draw_clone_info->pointsize*=2.0;
(void) GetTypeMetrics(image_list[0],draw_clone_info,&tile_metrics,
exception);
(void) FormatLocaleString(tile_geometry,MagickPathExtent,
"%.20gx%.20g%+.20g%+.20g",(double) montage->columns,(double)
(tile_metrics.ascent-tile_metrics.descent),0.0,
(double) extract_info.y+4);
(void) CloneString(&draw_clone_info->geometry,tile_geometry);
(void) CloneString(&draw_clone_info->text,title);
(void) AnnotateImage(montage,draw_clone_info,exception);
draw_clone_info=DestroyDrawInfo(draw_clone_info);
}
(void) SetImageProgressMonitor(montage,progress_monitor,
montage->client_data);
/*
Copy tile to the composite.
*/
x_offset=0;
y_offset=0;
if (montage_info->tile != (char *) NULL)
GetMontageGeometry(montage_info->tile,number_images,&x_offset,&y_offset,
&sans,&sans);
x_offset+=extract_info.x;
y_offset+=(ssize_t) title_offset+extract_info.y;
max_height=0;
status=MagickTrue;
for (tile=0; tile < MagickMin((ssize_t) tiles_per_page,(ssize_t) number_images); tile++)
{
/*
Copy this tile to the composite.
*/
image=CloneImage(image_list[tile],0,0,MagickTrue,exception);
if (image == (Image *) NULL)
ThrowImageException(ResourceLimitError,"MemoryAllocationFailed");
progress_monitor=SetImageProgressMonitor(image,
(MagickProgressMonitor) NULL,image->client_data);
width=concatenate != MagickFalse ? image->columns : extract_info.width;
if (image->rows > max_height)
max_height=image->rows;
height=concatenate != MagickFalse ? max_height : extract_info.height;
if (border_width != 0)
{
Image
*border_image;
RectangleInfo
border_info;
/*
Put a border around the image.
*/
border_info.width=border_width;
border_info.height=border_width;
if (montage_info->frame != (char *) NULL)
{
border_info.width=(width-image->columns+1)/2;
border_info.height=(height-image->rows+1)/2;
}
border_image=BorderImage(image,&border_info,image->compose,exception);
if (border_image != (Image *) NULL)
{
image=DestroyImage(image);
image=border_image;
}
if ((montage_info->frame != (char *) NULL) &&
(image->compose == DstOutCompositeOp))
{
(void) SetPixelChannelMask(image,AlphaChannel);
(void) NegateImage(image,MagickFalse,exception);
(void) SetPixelChannelMask(image,DefaultChannels);
}
}
/*
Gravitate as specified by the tile gravity.
*/
tile_image->columns=width;
tile_image->rows=height;
tile_image->gravity=montage_info->gravity;
if (image->gravity != UndefinedGravity)
tile_image->gravity=image->gravity;
(void) FormatLocaleString(tile_geometry,MagickPathExtent,
"%.20gx%.20g+0+0",(double) image->columns,(double) image->rows);
flags=ParseGravityGeometry(tile_image,tile_geometry,&geometry,exception);
x=(ssize_t) (geometry.x+border_width);
y=(ssize_t) (geometry.y+border_width);
if ((montage_info->frame != (char *) NULL) && (bevel_width > 0))
{
FrameInfo
frame_clone;
Image
*frame_image;
/*
Put an ornamental border around this tile.
*/
frame_clone=frame_info;
frame_clone.width=width+2*frame_info.width;
frame_clone.height=height+2*frame_info.height;
value=GetImageProperty(image,"label",exception);
if (value != (const char *) NULL)
frame_clone.height+=(size_t) ((metrics.ascent-metrics.descent+4)*
MultilineCensus(value));
frame_image=FrameImage(image,&frame_clone,image->compose,exception);
if (frame_image != (Image *) NULL)
{
image=DestroyImage(image);
image=frame_image;
}
x=0;
y=0;
}
if (LocaleCompare(image->magick,"NULL") != 0)
{
/*
Composite background with tile.
*/
if (montage_info->shadow != MagickFalse)
{
Image
*shadow_image;
/*
Shadow image.
*/
(void) QueryColorCompliance("#0000",AllCompliance,
&image->background_color,exception);
shadow_image=ShadowImage(image,80.0,2.0,5,5,exception);
if (shadow_image != (Image *) NULL)
{
(void) CompositeImage(shadow_image,image,OverCompositeOp,
MagickTrue,0,0,exception);
image=DestroyImage(image);
image=shadow_image;
}
}
(void) CompositeImage(montage,image,image->compose,MagickTrue,
x_offset+x,y_offset+y,exception);
value=GetImageProperty(image,"label",exception);
if (value != (const char *) NULL)
{
/*
Annotate composite tile with label.
*/
(void) FormatLocaleString(tile_geometry,MagickPathExtent,
"%.20gx%.20g%+.20g%+.20g",(double) ((montage_info->frame ?
image->columns : width)-2*border_width),(double)
(metrics.ascent-metrics.descent+4)*MultilineCensus(value),
(double) (x_offset+border_width),(double)
((montage_info->frame ? y_offset+height+border_width+4 :
y_offset+extract_info.height+border_width+
(montage_info->shadow != MagickFalse ? 4 : 0))+bevel_width));
(void) CloneString(&draw_info->geometry,tile_geometry);
(void) CloneString(&draw_info->text,value);
(void) AnnotateImage(montage,draw_info,exception);
}
}
x_offset+=(ssize_t) (width+2*(extract_info.x+border_width));
if (((tile+1) == (ssize_t) tiles_per_page) ||
(((tile+1) % tiles_per_row) == 0))
{
x_offset=extract_info.x;
y_offset+=(ssize_t) (height+(extract_info.y+border_width)*2+
(metrics.ascent-metrics.descent+4)*number_lines+
(montage_info->shadow != MagickFalse ? 4 : 0));
max_height=0;
}
if (images->progress_monitor != (MagickProgressMonitor) NULL)
{
proceed=SetImageProgress(image,MontageImageTag,tiles,total_tiles);
if (proceed == MagickFalse)
status=MagickFalse;
}
image_list[tile]=DestroyImage(image_list[tile]);
image=DestroyImage(image);
tiles++;
}
(void) status;
if ((i+1) < (ssize_t) images_per_page)
{
/*
Allocate next image structure.
*/
AcquireNextImage(clone_info,montage,exception);
if (GetNextImageInList(montage) == (Image *) NULL)
{
montage=DestroyImageList(montage);
return((Image *) NULL);
}
montage=GetNextImageInList(montage);
montage->background_color=montage_info->background_color;
image_list+=tiles_per_page;
number_images-=tiles_per_page;
}
}
tile_image=DestroyImage(tile_image);
if (texture != (Image *) NULL)
texture=DestroyImage(texture);
title=DestroyString(title);
master_list=(Image **) RelinquishMagickMemory(master_list);
draw_info=DestroyDrawInfo(draw_info);
clone_info=DestroyImageInfo(clone_info);
return(GetFirstImageInList(montage));
}
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% F l o o d f i l l P a i n t I m a g e %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% FloodfillPaintImage() changes the color value of any pixel that matches
% target and is an immediate neighbor. If the method FillToBorderMethod is
% specified, the color value is changed for any neighbor pixel that does not
% match the bordercolor member of image.
%
% By default target must match a particular pixel color exactly. However,
% in many cases two colors may differ by a small amount. The fuzz member of
% image defines how much tolerance is acceptable to consider two colors as
% the same. For example, set fuzz to 10 and the color red at intensities of
% 100 and 102 respectively are now interpreted as the same color for the
% purposes of the floodfill.
%
% The format of the FloodfillPaintImage method is:
%
% MagickBooleanType FloodfillPaintImage(Image *image,
% const DrawInfo *draw_info,const PixelInfo target,
% const ssize_t x_offset,const ssize_t y_offset,
% const MagickBooleanType invert,ExceptionInfo *exception)
%
% A description of each parameter follows:
%
% o image: the image.
%
% o draw_info: the draw info.
%
% o target: the RGB value of the target color.
%
% o x_offset,y_offset: the starting location of the operation.
%
% o invert: paint any pixel that does not match the target color.
%
% o exception: return any errors or warnings in this structure.
%
*/
MagickExport MagickBooleanType FloodfillPaintImage(Image *image,
const DrawInfo *draw_info,const PixelInfo *target,const ssize_t x_offset,
const ssize_t y_offset,const MagickBooleanType invert,
ExceptionInfo *exception)
{
#define MaxStacksize 262144UL
#define PushSegmentStack(up,left,right,delta) \
{ \
if (s >= (segment_stack+MaxStacksize)) \
ThrowBinaryException(DrawError,"SegmentStackOverflow",image->filename) \
else \
{ \
if ((((up)+(delta)) >= 0) && (((up)+(delta)) < (ssize_t) image->rows)) \
{ \
s->x1=(double) (left); \
s->y1=(double) (up); \
s->x2=(double) (right); \
s->y2=(double) (delta); \
s++; \
} \
} \
}
CacheView
*floodplane_view,
*image_view;
Image
*floodplane_image;
MagickBooleanType
skip,
status;
MemoryInfo
*segment_info;
PixelInfo
fill_color,
pixel;
register SegmentInfo
*s;
SegmentInfo
*segment_stack;
ssize_t
offset,
start,
x,
x1,
x2,
y;
/*
Check boundary conditions.
*/
assert(image != (Image *) NULL);
assert(image->signature == MagickCoreSignature);
if (image->debug != MagickFalse)
(void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
assert(draw_info != (DrawInfo *) NULL);
assert(draw_info->signature == MagickCoreSignature);
if ((x_offset < 0) || (x_offset >= (ssize_t) image->columns))
return(MagickFalse);
if ((y_offset < 0) || (y_offset >= (ssize_t) image->rows))
return(MagickFalse);
if (SetImageStorageClass(image,DirectClass,exception) == MagickFalse)
return(MagickFalse);
if (IsGrayColorspace(image->colorspace) != MagickFalse)
(void) SetImageColorspace(image,sRGBColorspace,exception);
if ((image->alpha_trait == UndefinedPixelTrait) &&
(draw_info->fill.alpha_trait != UndefinedPixelTrait))
(void) SetImageAlpha(image,OpaqueAlpha,exception);
/*
Set floodfill state.
*/
floodplane_image=CloneImage(image,image->columns,image->rows,MagickTrue,
exception);
if (floodplane_image == (Image *) NULL)
return(MagickFalse);
floodplane_image->alpha_trait=UndefinedPixelTrait;
floodplane_image->colorspace=GRAYColorspace;
(void) QueryColorCompliance("#000",AllCompliance,
&floodplane_image->background_color,exception);
(void) SetImageBackgroundColor(floodplane_image,exception);
segment_info=AcquireVirtualMemory(MaxStacksize,sizeof(*segment_stack));
if (segment_info == (MemoryInfo *) NULL)
{
floodplane_image=DestroyImage(floodplane_image);
ThrowBinaryException(ResourceLimitError,"MemoryAllocationFailed",
image->filename);
}
segment_stack=(SegmentInfo *) GetVirtualMemoryBlob(segment_info);
/*
Push initial segment on stack.
*/
status=MagickTrue;
x=x_offset;
y=y_offset;
start=0;
s=segment_stack;
PushSegmentStack(y,x,x,1);
PushSegmentStack(y+1,x,x,-1);
GetPixelInfo(image,&pixel);
image_view=AcquireVirtualCacheView(image,exception);
floodplane_view=AcquireAuthenticCacheView(floodplane_image,exception);
while (s > segment_stack)
{
register const Quantum
*restrict p;
register Quantum
*restrict q;
register ssize_t
x;
/*
Pop segment off stack.
*/
s--;
x1=(ssize_t) s->x1;
x2=(ssize_t) s->x2;
offset=(ssize_t) s->y2;
y=(ssize_t) s->y1+offset;
/*
Recolor neighboring pixels.
*/
p=GetCacheViewVirtualPixels(image_view,0,y,(size_t) (x1+1),1,exception);
q=GetCacheViewAuthenticPixels(floodplane_view,0,y,(size_t) (x1+1),1,
exception);
if ((p == (const Quantum *) NULL) || (q == (Quantum *) NULL))
break;
p+=x1*GetPixelChannels(image);
q+=x1*GetPixelChannels(floodplane_image);
for (x=x1; x >= 0; x--)
{
if (GetPixelGray(floodplane_image,q) != 0)
break;
GetPixelInfoPixel(image,p,&pixel);
if (IsFuzzyEquivalencePixelInfo(&pixel,target) == invert)
break;
SetPixelGray(floodplane_image,QuantumRange,q);
p-=GetPixelChannels(image);
q-=GetPixelChannels(floodplane_image);
}
if (SyncCacheViewAuthenticPixels(floodplane_view,exception) == MagickFalse)
break;
skip=x >= x1 ? MagickTrue : MagickFalse;
if (skip == MagickFalse)
{
start=x+1;
if (start < x1)
PushSegmentStack(y,start,x1-1,-offset);
x=x1+1;
}
do
{
if (skip == MagickFalse)
{
if (x < (ssize_t) image->columns)
{
p=GetCacheViewVirtualPixels(image_view,x,y,image->columns-x,1,
exception);
q=GetCacheViewAuthenticPixels(floodplane_view,x,y,image->columns-
x,1,exception);
if ((p == (const Quantum *) NULL) || (q == (Quantum *) NULL))
break;
for ( ; x < (ssize_t) image->columns; x++)
{
if (GetPixelGray(floodplane_image,q) != 0)
break;
GetPixelInfoPixel(image,p,&pixel);
if (IsFuzzyEquivalencePixelInfo(&pixel,target) == invert)
break;
SetPixelGray(floodplane_image,QuantumRange,q);
p+=GetPixelChannels(image);
q+=GetPixelChannels(floodplane_image);
}
status=SyncCacheViewAuthenticPixels(floodplane_view,exception);
if (status == MagickFalse)
break;
}
PushSegmentStack(y,start,x-1,offset);
if (x > (x2+1))
PushSegmentStack(y,x2+1,x-1,-offset);
}
skip=MagickFalse;
x++;
if (x <= x2)
{
p=GetCacheViewVirtualPixels(image_view,x,y,(size_t) (x2-x+1),1,
exception);
q=GetCacheViewAuthenticPixels(floodplane_view,x,y,(size_t) (x2-x+1),1,
exception);
if ((p == (const Quantum *) NULL) || (q == (Quantum *) NULL))
break;
for ( ; x <= x2; x++)
{
if (GetPixelGray(floodplane_image,q) != 0)
break;
GetPixelInfoPixel(image,p,&pixel);
if (IsFuzzyEquivalencePixelInfo(&pixel,target) != invert)
break;
p+=GetPixelChannels(image);
q+=GetPixelChannels(floodplane_image);
}
}
start=x;
} while (x <= x2);
}
status=MagickTrue;
#if defined(MAGICKCORE_OPENMP_SUPPORT)
#pragma omp parallel for schedule(static,4) shared(status) \
magick_threads(floodplane_image,image,floodplane_image->rows,1)
#endif
for (y=0; y < (ssize_t) image->rows; y++)
{
register const Quantum
*restrict p;
register Quantum
*restrict q;
register ssize_t
x;
/*
Tile fill color onto floodplane.
*/
if (status == MagickFalse)
continue;
p=GetCacheViewVirtualPixels(floodplane_view,0,y,image->columns,1,exception);
q=GetCacheViewAuthenticPixels(image_view,0,y,image->columns,1,exception);
if ((p == (const Quantum *) NULL) || (q == (Quantum *) NULL))
{
status=MagickFalse;
continue;
}
for (x=0; x < (ssize_t) image->columns; x++)
{
if (GetPixelGray(floodplane_image,p) != 0)
{
(void) GetFillColor(draw_info,x,y,&fill_color,exception);
SetPixelViaPixelInfo(image,&fill_color,q);
}
p+=GetPixelChannels(floodplane_image);
q+=GetPixelChannels(image);
}
if (SyncCacheViewAuthenticPixels(image_view,exception) == MagickFalse)
status=MagickFalse;
}
floodplane_view=DestroyCacheView(floodplane_view);
image_view=DestroyCacheView(image_view);
segment_info=RelinquishVirtualMemory(segment_info);
floodplane_image=DestroyImage(floodplane_image);
return(status);
}
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% R e a d G R A D I E N T I m a g e %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% ReadGRADIENTImage creates a gradient image and initializes it to
% the color range as specified by the filename. It allocates the memory
% necessary for the new Image structure and returns a pointer to the new
% image.
%
% The format of the ReadGRADIENTImage method is:
%
% Image *ReadGRADIENTImage(const ImageInfo *image_info,
% ExceptionInfo *exception)
%
% A description of each parameter follows:
%
% o image_info: the image info.
%
% o exception: return any errors or warnings in this structure.
%
*/
static Image *ReadGRADIENTImage(const ImageInfo *image_info,
ExceptionInfo *exception)
{
char
colorname[MagickPathExtent+4];
Image
*image;
ImageInfo
*read_info;
MagickBooleanType
icc_color,
status;
StopInfo
*stops;
/*
Initialize Image structure.
*/
assert(image_info != (const ImageInfo *) NULL);
assert(image_info->signature == MagickCoreSignature);
if (image_info->debug != MagickFalse)
(void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",
image_info->filename);
assert(exception != (ExceptionInfo *) NULL);
assert(exception->signature == MagickCoreSignature);
read_info=CloneImageInfo(image_info);
SetImageInfoBlob(read_info,(void *) NULL,0);
(void) CopyMagickString(colorname,image_info->filename,MagickPathExtent);
(void) sscanf(image_info->filename,"%[^-]",colorname);
(void) FormatLocaleString(read_info->filename,MagickPathExtent,"xc:%s",
colorname);
image=ReadImage(read_info,exception);
read_info=DestroyImageInfo(read_info);
if (image == (Image *) NULL)
return((Image *) NULL);
(void) SetImageAlpha(image,(Quantum) TransparentAlpha,exception);
(void) CopyMagickString(image->filename,image_info->filename,MagickPathExtent);
icc_color=MagickFalse;
if (LocaleCompare(colorname,"icc") == 0)
{
(void) ConcatenateMagickString(colorname,"-",MagickPathExtent);
(void) sscanf(image_info->filename,"%*[^-]-%[^-]",colorname+4);
icc_color=MagickTrue;
}
stops=(StopInfo *) AcquireQuantumMemory(2,sizeof(*stops));
if (stops == (StopInfo *) NULL)
ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
stops[0].offset=0.0;
stops[1].offset=1.0;
status=QueryColorCompliance(colorname,AllCompliance,&stops[0].color,exception);
if (status == MagickFalse)
{
stops=(StopInfo *) RelinquishMagickMemory(stops);
image=DestroyImage(image);
return((Image *) NULL);
}
(void) SetImageColorspace(image,stops[0].color.colorspace,exception);
(void) CopyMagickString(colorname,"white",MagickPathExtent);
if (GetPixelInfoIntensity(image,&stops[0].color) > (QuantumRange/2.0))
(void) CopyMagickString(colorname,"black",MagickPathExtent);
if (icc_color == MagickFalse)
(void) sscanf(image_info->filename,"%*[^-]-%[^-]",colorname);
else
(void) sscanf(image_info->filename,"%*[^-]-%*[^-]-%[^-]",colorname);
status=QueryColorCompliance(colorname,AllCompliance,&stops[1].color,exception);
if (status == MagickFalse)
{
stops=(StopInfo *) RelinquishMagickMemory(stops);
image=DestroyImage(image);
return((Image *) NULL);
}
image->alpha_trait=stops[0].color.alpha_trait;
if (stops[1].color.alpha_trait != UndefinedPixelTrait)
image->alpha_trait=stops[1].color.alpha_trait;
status=GradientImage(image,LocaleCompare(image_info->magick,"GRADIENT") == 0 ?
LinearGradient : RadialGradient,PadSpread,stops,2,exception);
stops=(StopInfo *) RelinquishMagickMemory(stops);
if (status == MagickFalse)
{
image=DestroyImageList(image);
return((Image *) NULL);
}
return(GetFirstImageInList(image));
}
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% R e a d X C I m a g e %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% ReadXCImage creates a constant image and initializes it to the
% X server color as specified by the filename. It allocates the memory
% necessary for the new Image structure and returns a pointer to the new
% image.
%
% The format of the ReadXCImage method is:
%
% Image *ReadXCImage(const ImageInfo *image_info,ExceptionInfo *exception)
%
% A description of each parameter follows:
%
% o image: The image.
%
% o image_info: the image info.
%
% o exception: return any errors or warnings in this structure.
%
*/
static Image *ReadXCImage(const ImageInfo *image_info,ExceptionInfo *exception)
{
Image
*image;
MagickBooleanType
status;
PixelInfo
pixel;
register ssize_t
x;
register Quantum
*q;
ssize_t
y;
/*
Initialize Image structure.
*/
assert(image_info != (const ImageInfo *) NULL);
assert(image_info->signature == MagickSignature);
if (image_info->debug != MagickFalse)
(void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",
image_info->filename);
assert(exception != (ExceptionInfo *) NULL);
assert(exception->signature == MagickSignature);
image=AcquireImage(image_info,exception);
if (image->columns == 0)
image->columns=1;
if (image->rows == 0)
image->rows=1;
(void) CopyMagickString(image->filename,image_info->filename,MaxTextExtent);
if (*image_info->filename == '\0')
pixel=image->background_color;
else
{
status=QueryColorCompliance((char *) image_info->filename,AllCompliance,
&pixel,exception);
if (status == MagickFalse)
{
image=DestroyImage(image);
return((Image *) NULL);
}
}
(void) SetImageColorspace(image,pixel.colorspace,exception);
image->alpha_trait=pixel.alpha_trait;
for (y=0; y < (ssize_t) image->rows; y++)
{
q=QueueAuthenticPixels(image,0,y,image->columns,1,exception);
if (q == (Quantum *) NULL)
break;
for (x=0; x < (ssize_t) image->columns; x++)
{
SetPixelInfoPixel(image,&pixel,q);
q+=GetPixelChannels(image);
}
if (SyncAuthenticPixels(image,exception) == MagickFalse)
break;
}
return(GetFirstImageInList(image));
}