/* %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % % % % % % TTTTT X X TTTTT % % T X X T % % T X T % % T X X T % % T X X T % % % % % % Render Text Onto A Canvas Image. % % % % Software Design % % Cristy % % July 1992 % % % % % % Copyright 1999-2015 ImageMagick Studio LLC, a non-profit organization % % dedicated to making software imaging solutions freely available. % % % % You may not use this file except in compliance with the License. You may % % obtain a copy of the License at % % % % http://www.imagemagick.org/script/license.php % % % % Unless required by applicable law or agreed to in writing, software % % distributed under the License is distributed on an "AS IS" BASIS, % % WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. % % See the License for the specific language governing permissions and % % limitations under the License. % % % %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % */ /* Include declarations. */ #include "MagickCore/studio.h" #include "MagickCore/annotate.h" #include "MagickCore/attribute.h" #include "MagickCore/blob.h" #include "MagickCore/blob-private.h" #include "MagickCore/cache.h" #include "MagickCore/color.h" #include "MagickCore/color-private.h" #include "MagickCore/colorspace.h" #include "MagickCore/constitute.h" #include "MagickCore/draw.h" #include "MagickCore/exception.h" #include "MagickCore/exception-private.h" #include "MagickCore/geometry.h" #include "MagickCore/image.h" #include "MagickCore/image-private.h" #include "MagickCore/list.h" #include "MagickCore/magick.h" #include "MagickCore/memory_.h" #include "MagickCore/monitor.h" #include "MagickCore/monitor-private.h" #include "MagickCore/option.h" #include "MagickCore/pixel-accessor.h" #include "MagickCore/quantum-private.h" #include "MagickCore/static.h" #include "MagickCore/statistic.h" #include "MagickCore/string_.h" #include "MagickCore/module.h" /* Forward declarations. */ static MagickBooleanType WriteTXTImage(const ImageInfo *,Image *,ExceptionInfo *); /* %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % % % % % % I s T X T % % % % % % % %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % IsTXT() returns MagickTrue if the image format type, identified by the magick % string, is TXT. % % The format of the IsTXT method is: % % MagickBooleanType IsTXT(const unsigned char *magick,const size_t length) % % A description of each parameter follows: % % o magick: compare image format pattern against these bytes. % % o length: Specifies the length of the magick string. % */ static MagickBooleanType IsTXT(const unsigned char *magick,const size_t length) { #define MagickID "# ImageMagick pixel enumeration:" char colorspace[MagickPathExtent]; ssize_t count; unsigned long columns, depth, rows; if (length < 40) return(MagickFalse); if (LocaleNCompare((const char *) magick,MagickID,strlen(MagickID)) != 0) return(MagickFalse); count=(ssize_t) sscanf((const char *) magick+32,"%lu,%lu,%lu,%s",&columns, &rows,&depth,colorspace); if (count != 4) return(MagickFalse); return(MagickTrue); } /* %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % % % % % % R e a d T E X T I m a g e % % % % % % % %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % ReadTEXTImage() reads a text file and returns it as an image. It % allocates the memory necessary for the new Image structure and returns a % pointer to the new image. % % The format of the ReadTEXTImage method is: % % Image *ReadTEXTImage(const ImageInfo *image_info,Image *image, % char *text,ExceptionInfo *exception) % % A description of each parameter follows: % % o image_info: the image info. % % o image: the image. % % o text: the text storage buffer. % % o exception: return any errors or warnings in this structure. % */ static Image *ReadTEXTImage(const ImageInfo *image_info,Image *image, char *text,ExceptionInfo *exception) { char filename[MagickPathExtent], geometry[MagickPathExtent], *p; DrawInfo *draw_info; Image *texture; MagickBooleanType status; PointInfo delta; RectangleInfo page; ssize_t offset; TypeMetric metrics; /* 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); /* Set the page geometry. */ delta.x=DefaultResolution; delta.y=DefaultResolution; if ((image->resolution.x == 0.0) || (image->resolution.y == 0.0)) { GeometryInfo geometry_info; MagickStatusType flags; flags=ParseGeometry(PSDensityGeometry,&geometry_info); image->resolution.x=geometry_info.rho; image->resolution.y=geometry_info.sigma; if ((flags & SigmaValue) == 0) image->resolution.y=image->resolution.x; } page.width=612; page.height=792; page.x=43; page.y=43; if (image_info->page != (char *) NULL) (void) ParseAbsoluteGeometry(image_info->page,&page); /* Initialize Image structure. */ image->columns=(size_t) floor((((double) page.width*image->resolution.x)/ delta.x)+0.5); image->rows=(size_t) floor((((double) page.height*image->resolution.y)/ delta.y)+0.5); status=SetImageExtent(image,image->columns,image->rows,exception); if (status == MagickFalse) return(DestroyImageList(image)); image->page.x=0; image->page.y=0; texture=(Image *) NULL; if (image_info->texture != (char *) NULL) { ImageInfo *read_info; read_info=CloneImageInfo(image_info); SetImageInfoBlob(read_info,(void *) NULL,0); (void) CopyMagickString(read_info->filename,image_info->texture, MagickPathExtent); texture=ReadImage(read_info,exception); read_info=DestroyImageInfo(read_info); } /* Annotate the text image. */ (void) SetImageBackgroundColor(image,exception); draw_info=CloneDrawInfo(image_info,(DrawInfo *) NULL); (void) CloneString(&draw_info->text,image_info->filename); (void) FormatLocaleString(geometry,MagickPathExtent,"0x0%+ld%+ld",(long) page.x, (long) page.y); (void) CloneString(&draw_info->geometry,geometry); status=GetTypeMetrics(image,draw_info,&metrics,exception); if (status == MagickFalse) ThrowReaderException(TypeError,"UnableToGetTypeMetrics"); page.y=(ssize_t) ceil((double) page.y+metrics.ascent-0.5); (void) FormatLocaleString(geometry,MagickPathExtent,"0x0%+ld%+ld",(long) page.x, (long) page.y); (void) CloneString(&draw_info->geometry,geometry); (void) CopyMagickString(filename,image_info->filename,MagickPathExtent); if (*draw_info->text != '\0') *draw_info->text='\0'; p=text; for (offset=2*page.y; p != (char *) NULL; ) { /* Annotate image with text. */ (void) ConcatenateString(&draw_info->text,text); (void) ConcatenateString(&draw_info->text,"\n"); offset+=(ssize_t) (metrics.ascent-metrics.descent); if (image->previous == (Image *) NULL) { status=SetImageProgress(image,LoadImageTag,offset,image->rows); if (status == MagickFalse) break; } p=ReadBlobString(image,text); if ((offset < (ssize_t) image->rows) && (p != (char *) NULL)) continue; if (texture != (Image *) NULL) { MagickProgressMonitor progress_monitor; progress_monitor=SetImageProgressMonitor(image, (MagickProgressMonitor) NULL,image->client_data); (void) TextureImage(image,texture,exception); (void) SetImageProgressMonitor(image,progress_monitor, image->client_data); } (void) AnnotateImage(image,draw_info,exception); if (p == (char *) NULL) break; /* Page is full-- allocate next image structure. */ *draw_info->text='\0'; offset=2*page.y; AcquireNextImage(image_info,image,exception); if (GetNextImageInList(image) == (Image *) NULL) { image=DestroyImageList(image); return((Image *) NULL); } image->next->columns=image->columns; image->next->rows=image->rows; image=SyncNextImageInList(image); (void) CopyMagickString(image->filename,filename,MagickPathExtent); (void) SetImageBackgroundColor(image,exception); status=SetImageProgress(image,LoadImagesTag,TellBlob(image), GetBlobSize(image)); if (status == MagickFalse) break; } if (texture != (Image *) NULL) { MagickProgressMonitor progress_monitor; progress_monitor=SetImageProgressMonitor(image, (MagickProgressMonitor) NULL,image->client_data); (void) TextureImage(image,texture,exception); (void) SetImageProgressMonitor(image,progress_monitor,image->client_data); } (void) AnnotateImage(image,draw_info,exception); if (texture != (Image *) NULL) texture=DestroyImage(texture); draw_info=DestroyDrawInfo(draw_info); (void) CloseBlob(image); return(GetFirstImageInList(image)); } /* %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % % % % % % R e a d T X T I m a g e % % % % % % % %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % ReadTXTImage() reads a text file and returns it as an image. It allocates % the memory necessary for the new Image structure and returns a pointer to % the new image. % % The format of the ReadTXTImage method is: % % Image *ReadTXTImage(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 *ReadTXTImage(const ImageInfo *image_info,ExceptionInfo *exception) { char colorspace[MagickPathExtent], text[MagickPathExtent]; Image *image; long type, x_offset, y, y_offset; PixelInfo pixel; MagickBooleanType status; QuantumAny range; register ssize_t i, x; register Quantum *q; ssize_t count; unsigned long depth, height, max_value, 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,exception); status=OpenBlob(image_info,image,ReadBinaryBlobMode,exception); if (status == MagickFalse) { image=DestroyImageList(image); return((Image *) NULL); } (void) ResetMagickMemory(text,0,sizeof(text)); (void) ReadBlobString(image,text); if (LocaleNCompare((char *) text,MagickID,strlen(MagickID)) != 0) return(ReadTEXTImage(image_info,image,text,exception)); do { width=0; height=0; max_value=0; *colorspace='\0'; count=(ssize_t) sscanf(text+32,"%lu,%lu,%lu,%s",&width,&height,&max_value, colorspace); if ((count != 4) || (width == 0) || (height == 0) || (max_value == 0)) ThrowReaderException(CorruptImageError,"ImproperImageHeader"); image->columns=width; image->rows=height; for (depth=1; (GetQuantumRange(depth)+1) < max_value; depth++) ; image->depth=depth; status=SetImageExtent(image,image->columns,image->rows,exception); if (status == MagickFalse) return(DestroyImageList(image)); LocaleLower(colorspace); i=(ssize_t) strlen(colorspace)-1; image->alpha_trait=UndefinedPixelTrait; if ((i > 0) && (colorspace[i] == 'a')) { colorspace[i]='\0'; image->alpha_trait=BlendPixelTrait; } type=ParseCommandOption(MagickColorspaceOptions,MagickFalse,colorspace); if (type < 0) ThrowReaderException(CorruptImageError,"ImproperImageHeader"); (void) SetImageBackgroundColor(image,exception); (void) SetImageColorspace(image,(ColorspaceType) type,exception); GetPixelInfo(image,&pixel); range=GetQuantumRange(image->depth); for (y=0; y < (ssize_t) image->rows; y++) { double alpha, black, blue, green, red; red=0.0; green=0.0; blue=0.0; black=0.0; alpha=0.0; for (x=0; x < (ssize_t) image->columns; x++) { if (ReadBlobString(image,text) == (char *) NULL) break; switch (image->colorspace) { case GRAYColorspace: { if (image->alpha_trait != UndefinedPixelTrait) { count=(ssize_t) sscanf(text,"%ld,%ld: (%lf%*[%,]%lf%*[%,]", &x_offset,&y_offset,&red,&alpha); green=red; blue=red; break; } count=(ssize_t) sscanf(text,"%ld,%ld: (%lf%*[%,]",&x_offset, &y_offset,&red); green=red; blue=red; break; } case CMYKColorspace: { if (image->alpha_trait != UndefinedPixelTrait) { count=(ssize_t) sscanf(text, "%ld,%ld: (%lf%*[%,]%lf%*[%,]%lf%*[%,]%lf%*[%,]%lf%*[%,]", &x_offset,&y_offset,&red,&green,&blue,&black,&alpha); break; } count=(ssize_t) sscanf(text, "%ld,%ld: (%lf%*[%,]%lf%*[%,]%lf%*[%,]%lf%*[%,]",&x_offset, &y_offset,&red,&green,&blue,&black); break; } default: { if (image->alpha_trait != UndefinedPixelTrait) { count=(ssize_t) sscanf(text, "%ld,%ld: (%lf%*[%,]%lf%*[%,]%lf%*[%,]%lf%*[%,]", &x_offset,&y_offset,&red,&green,&blue,&alpha); break; } count=(ssize_t) sscanf(text, "%ld,%ld: (%lf%*[%,]%lf%*[%,]%lf%*[%,]",&x_offset, &y_offset,&red,&green,&blue); break; } } if (strchr(text,'%') != (char *) NULL) { red*=0.01*range; green*=0.01*range; blue*=0.01*range; black*=0.01*range; alpha*=0.01*range; } if (image->colorspace == LabColorspace) { green+=(range+1)/2.0; blue+=(range+1)/2.0; } pixel.red=ScaleAnyToQuantum((QuantumAny) (red+0.5),range); pixel.green=ScaleAnyToQuantum((QuantumAny) (green+0.5),range); pixel.blue=ScaleAnyToQuantum((QuantumAny) (blue+0.5),range); pixel.black=ScaleAnyToQuantum((QuantumAny) (black+0.5),range); pixel.alpha=ScaleAnyToQuantum((QuantumAny) (alpha+0.5),range); q=GetAuthenticPixels(image,x_offset,y_offset,1,1,exception); if (q == (Quantum *) NULL) continue; SetPixelViaPixelInfo(image,&pixel,q); if (SyncAuthenticPixels(image,exception) == MagickFalse) break; } } (void) ReadBlobString(image,text); if (LocaleNCompare((char *) text,MagickID,strlen(MagickID)) == 0) { /* Allocate next image structure. */ AcquireNextImage(image_info,image,exception); if (GetNextImageInList(image) == (Image *) NULL) { image=DestroyImageList(image); return((Image *) NULL); } image=SyncNextImageInList(image); status=SetImageProgress(image,LoadImagesTag,TellBlob(image), GetBlobSize(image)); if (status == MagickFalse) break; } } while (LocaleNCompare((char *) text,MagickID,strlen(MagickID)) == 0); (void) CloseBlob(image); return(GetFirstImageInList(image)); } /* %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % % % % % % R e g i s t e r T X T I m a g e % % % % % % % %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % RegisterTXTImage() adds attributes for the TXT image format to the % list of supported formats. The attributes include the image format % tag, a method to read and/or write the format, whether the format % supports the saving of more than one frame to the same file or blob, % whether the format supports native in-memory I/O, and a brief % description of the format. % % The format of the RegisterTXTImage method is: % % size_t RegisterTXTImage(void) % */ ModuleExport size_t RegisterTXTImage(void) { MagickInfo *entry; entry=AcquireMagickInfo("TXT","SPARSE-COLOR","Sparse Color"); entry->encoder=(EncodeImageHandler *) WriteTXTImage; entry->flags|=CoderRawSupportFlag; entry->flags|=CoderEndianSupportFlag; (void) RegisterMagickInfo(entry); entry=AcquireMagickInfo("TXT","TEXT","Text"); entry->decoder=(DecodeImageHandler *) ReadTXTImage; entry->encoder=(EncodeImageHandler *) WriteTXTImage; entry->flags|=CoderRawSupportFlag; entry->flags|=CoderEndianSupportFlag; (void) RegisterMagickInfo(entry); entry=AcquireMagickInfo("TXT","TXT","Text"); entry->decoder=(DecodeImageHandler *) ReadTXTImage; entry->encoder=(EncodeImageHandler *) WriteTXTImage; entry->magick=(IsImageFormatHandler *) IsTXT; (void) RegisterMagickInfo(entry); return(MagickImageCoderSignature); } /* %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % % % % % % U n r e g i s t e r T X T I m a g e % % % % % % % %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % UnregisterTXTImage() removes format registrations made by the % TXT module from the list of supported format. % % The format of the UnregisterTXTImage method is: % % UnregisterTXTImage(void) % */ ModuleExport void UnregisterTXTImage(void) { (void) UnregisterMagickInfo("SPARSE-COLOR"); (void) UnregisterMagickInfo("TEXT"); (void) UnregisterMagickInfo("TXT"); } /* %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % % % % % % W r i t e T X T I m a g e % % % % % % % %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % WriteTXTImage writes the pixel values as text numbers. % % The format of the WriteTXTImage method is: % % MagickBooleanType WriteTXTImage(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 WriteTXTImage(const ImageInfo *image_info,Image *image, ExceptionInfo *exception) { char buffer[MagickPathExtent], colorspace[MagickPathExtent], tuple[MagickPathExtent]; MagickBooleanType status; MagickOffsetType scene; PixelInfo pixel; register const Quantum *p; register ssize_t x; ssize_t y; /* Open output image file. */ assert(image_info != (const ImageInfo *) NULL); assert(image_info->signature == MagickSignature); assert(image != (Image *) NULL); assert(image->signature == MagickSignature); if (image->debug != MagickFalse) (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename); status=OpenBlob(image_info,image,WriteBlobMode,exception); if (status == MagickFalse) return(status); scene=0; do { ComplianceType compliance; (void) CopyMagickString(colorspace,CommandOptionToMnemonic( MagickColorspaceOptions,(ssize_t) image->colorspace),MagickPathExtent); LocaleLower(colorspace); image->depth=GetImageQuantumDepth(image,MagickTrue); if (image->alpha_trait != UndefinedPixelTrait) (void) ConcatenateMagickString(colorspace,"a",MagickPathExtent); compliance=NoCompliance; if (LocaleCompare(image_info->magick,"SPARSE-COLOR") != 0) { (void) FormatLocaleString(buffer,MagickPathExtent, "# ImageMagick pixel enumeration: %.20g,%.20g,%.20g,%s\n",(double) image->columns,(double) image->rows,(double) ((MagickOffsetType) GetQuantumRange(image->depth)),colorspace); (void) WriteBlobString(image,buffer); compliance=SVGCompliance; } GetPixelInfo(image,&pixel); 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++) { GetPixelInfoPixel(image,p,&pixel); if (pixel.colorspace == LabColorspace) { pixel.green-=(QuantumRange+1)/2.0; pixel.blue-=(QuantumRange+1)/2.0; } if (LocaleCompare(image_info->magick,"SPARSE-COLOR") == 0) { /* Sparse-color format. */ if (GetPixelAlpha(image,p) == (Quantum) OpaqueAlpha) { GetColorTuple(&pixel,MagickFalse,tuple); (void) FormatLocaleString(buffer,MagickPathExtent,"%.20g,%.20g,", (double) x,(double) y); (void) WriteBlobString(image,buffer); (void) WriteBlobString(image,tuple); (void) WriteBlobString(image," "); } p+=GetPixelChannels(image); continue; } (void) FormatLocaleString(buffer,MagickPathExtent,"%.20g,%.20g: ",(double) x,(double) y); (void) WriteBlobString(image,buffer); (void) CopyMagickString(tuple,"(",MagickPathExtent); if (pixel.colorspace == GRAYColorspace) ConcatenateColorComponent(&pixel,GrayPixelChannel,compliance, tuple); else { ConcatenateColorComponent(&pixel,RedPixelChannel,compliance,tuple); (void) ConcatenateMagickString(tuple,",",MagickPathExtent); ConcatenateColorComponent(&pixel,GreenPixelChannel,compliance, tuple); (void) ConcatenateMagickString(tuple,",",MagickPathExtent); ConcatenateColorComponent(&pixel,BluePixelChannel,compliance,tuple); } if (pixel.colorspace == CMYKColorspace) { (void) ConcatenateMagickString(tuple,",",MagickPathExtent); ConcatenateColorComponent(&pixel,BlackPixelChannel,compliance, tuple); } if (pixel.alpha_trait != UndefinedPixelTrait) { (void) ConcatenateMagickString(tuple,",",MagickPathExtent); ConcatenateColorComponent(&pixel,AlphaPixelChannel,compliance, tuple); } (void) ConcatenateMagickString(tuple,")",MagickPathExtent); (void) WriteBlobString(image,tuple); (void) WriteBlobString(image," "); GetColorTuple(&pixel,MagickTrue,tuple); (void) FormatLocaleString(buffer,MagickPathExtent,"%s",tuple); (void) WriteBlobString(image,buffer); (void) WriteBlobString(image," "); (void) QueryColorname(image,&pixel,SVGCompliance,tuple,exception); (void) WriteBlobString(image,tuple); (void) WriteBlobString(image,"\n"); p+=GetPixelChannels(image); } status=SetImageProgress(image,SaveImageTag,(MagickOffsetType) y, image->rows); if (status == MagickFalse) break; } if (GetNextImageInList(image) == (Image *) NULL) break; image=SyncNextImageInList(image); status=SetImageProgress(image,SaveImagesTag,scene++, GetImageListLength(image)); if (status == MagickFalse) break; } while (image_info->adjoin != MagickFalse); (void) CloseBlob(image); return(MagickTrue); }