/* %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % % % % % % 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 % % John Cristy % % July 1992 % % % % % % Copyright 1999-2010 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 "magick/studio.h" #include "magick/annotate.h" #include "magick/attribute.h" #include "magick/blob.h" #include "magick/blob-private.h" #include "magick/cache.h" #include "magick/color.h" #include "magick/color-private.h" #include "magick/colorspace.h" #include "magick/constitute.h" #include "magick/draw.h" #include "magick/exception.h" #include "magick/exception-private.h" #include "magick/geometry.h" #include "magick/image.h" #include "magick/image-private.h" #include "magick/list.h" #include "magick/magick.h" #include "magick/memory_.h" #include "magick/monitor.h" #include "magick/monitor-private.h" #include "magick/option.h" #include "magick/pixel-private.h" #include "magick/quantum-private.h" #include "magick/static.h" #include "magick/statistic.h" #include "magick/string_.h" #include "magick/module.h" /* Forward declarations. */ static MagickBooleanType WriteTXTImage(const ImageInfo *,Image *); /* %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % % % % % % 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[MaxTextExtent]; 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[MaxTextExtent], geometry[MaxTextExtent], *p; DrawInfo *draw_info; Image *texture; ssize_t offset; MagickBooleanType status; PointInfo delta; RectangleInfo page; 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->x_resolution == 0.0) || (image->y_resolution == 0.0)) { GeometryInfo geometry_info; MagickStatusType flags; flags=ParseGeometry(PSDensityGeometry,&geometry_info); image->x_resolution=geometry_info.rho; image->y_resolution=geometry_info.sigma; if ((flags & SigmaValue) == 0) image->y_resolution=image->x_resolution; } 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->x_resolution)/delta.x)+0.5); image->rows=(size_t) floor((((double) page.height* image->y_resolution)/delta.y)+0.5); 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, MaxTextExtent); texture=ReadImage(read_info,exception); read_info=DestroyImageInfo(read_info); } /* Annotate the text image. */ (void) SetImageBackgroundColor(image); draw_info=CloneDrawInfo(image_info,(DrawInfo *) NULL); (void) CloneString(&draw_info->text,image_info->filename); (void) FormatMagickString(geometry,MaxTextExtent,"0x0%+ld%+ld",(long) page.x, (long) page.y); (void) CloneString(&draw_info->geometry,geometry); status=GetTypeMetrics(image,draw_info,&metrics); if (status == MagickFalse) ThrowReaderException(TypeError,"UnableToGetTypeMetrics"); page.y=(ssize_t) ceil((double) page.y+metrics.ascent-0.5); (void) FormatMagickString(geometry,MaxTextExtent,"0x0%+ld%+ld",(long) page.x, (long) page.y); (void) CloneString(&draw_info->geometry,geometry); (void) CopyMagickString(filename,image_info->filename,MaxTextExtent); 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); (void) SetImageProgressMonitor(image,progress_monitor, image->client_data); } (void) AnnotateImage(image,draw_info); if (p == (char *) NULL) break; /* Page is full-- allocate next image structure. */ *draw_info->text='\0'; offset=2*page.y; AcquireNextImage(image_info,image); 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,MaxTextExtent); (void) SetImageBackgroundColor(image); 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); (void) SetImageProgressMonitor(image,progress_monitor,image->client_data); } (void) AnnotateImage(image,draw_info); 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[MaxTextExtent], text[MaxTextExtent]; Image *image; IndexPacket *indexes; long type, x_offset, y, y_offset; LongPixelPacket pixel; MagickBooleanType status; QuantumAny range; register ssize_t i, x; register PixelPacket *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); 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 { *colorspace='\0'; count=(ssize_t) sscanf(text+32,"%lu,%lu,%lu,%s",&width,&height,&max_value, colorspace); if (count != 4) ThrowReaderException(CorruptImageError,"ImproperImageHeader"); image->columns=width; image->rows=height; for (depth=1; (GetQuantumRange(depth)+1) < max_value; depth++) ; image->depth=depth; LocaleLower(colorspace); i=(ssize_t) strlen(colorspace)-1; image->matte=MagickFalse; if ((i > 0) && (colorspace[i] == 'a')) { colorspace[i]='\0'; image->matte=MagickTrue; } type=ParseMagickOption(MagickColorspaceOptions,MagickFalse,colorspace); if (type < 0) ThrowReaderException(CorruptImageError,"ImproperImageHeader"); image->colorspace=(ColorspaceType) type; (void) ResetMagickMemory(&pixel,0,sizeof(pixel)); (void) SetImageBackgroundColor(image); range=GetQuantumRange(image->depth); for (y=0; y < (ssize_t) image->rows; y++) { for (x=0; x < (ssize_t) image->columns; x++) { if (ReadBlobString(image,text) == (char *) NULL) break; if (image->colorspace == CMYKColorspace) { if (image->matte != MagickFalse) count=(ssize_t) sscanf(text,"%ld,%ld: (%u,%u,%u,%u,%u",&x_offset, &y_offset,&pixel.red,&pixel.green,&pixel.blue,&pixel.index, &pixel.opacity); else count=(ssize_t) sscanf(text,"%ld,%ld: (%u,%u,%u,%u",&x_offset, &y_offset,&pixel.red,&pixel.green,&pixel.blue,&pixel.index); } else if (image->matte != MagickFalse) count=(ssize_t) sscanf(text,"%ld,%ld: (%u,%u,%u,%u",&x_offset, &y_offset,&pixel.red,&pixel.green,&pixel.blue,&pixel.opacity); else count=(ssize_t) sscanf(text,"%ld,%ld: (%u,%u,%u",&x_offset, &y_offset,&pixel.red,&pixel.green,&pixel.blue); if (count < 5) continue; q=GetAuthenticPixels(image,x_offset,y_offset,1,1,exception); if (q == (PixelPacket *) NULL) continue; q->red=ScaleAnyToQuantum(pixel.red,range); q->green=ScaleAnyToQuantum(pixel.green,range); q->blue=ScaleAnyToQuantum(pixel.blue,range); if (image->colorspace == CMYKColorspace) { indexes=GetAuthenticIndexQueue(image); *indexes=ScaleAnyToQuantum(pixel.index,range); } if (image->matte != MagickFalse) q->opacity=(Quantum) (QuantumRange-ScaleAnyToQuantum(pixel.opacity, range)); 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); 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=SetMagickInfo("TEXT"); entry->decoder=(DecodeImageHandler *) ReadTXTImage; entry->encoder=(EncodeImageHandler *) WriteTXTImage; entry->raw=MagickTrue; entry->endian_support=MagickTrue; entry->description=ConstantString("Text"); entry->module=ConstantString("TXT"); (void) RegisterMagickInfo(entry); entry=SetMagickInfo("TXT"); entry->decoder=(DecodeImageHandler *) ReadTXTImage; entry->encoder=(EncodeImageHandler *) WriteTXTImage; entry->description=ConstantString("Text"); entry->magick=(IsImageFormatHandler *) IsTXT; entry->module=ConstantString("TXT"); (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("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) % % A description of each parameter follows. % % o image_info: the image info. % % o image: The image. % */ static MagickBooleanType WriteTXTImage(const ImageInfo *image_info,Image *image) { char buffer[MaxTextExtent], colorspace[MaxTextExtent], tuple[MaxTextExtent]; ssize_t y; MagickBooleanType status; MagickOffsetType scene; MagickPixelPacket pixel; register const IndexPacket *indexes; register const PixelPacket *p; register ssize_t x; /* 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,&image->exception); if (status == MagickFalse) return(status); scene=0; do { (void) CopyMagickString(colorspace,MagickOptionToMnemonic( MagickColorspaceOptions,(ssize_t) image->colorspace),MaxTextExtent); LocaleLower(colorspace); image->depth=GetImageQuantumDepth(image,MagickTrue); if (image->matte != MagickFalse) (void) ConcatenateMagickString(colorspace,"a",MaxTextExtent); (void) FormatMagickString(buffer,MaxTextExtent, "# ImageMagick pixel enumeration: %lu,%lu,%lu,%s\n",(unsigned long) image->columns,(unsigned long) image->rows,(unsigned long) GetQuantumRange(image->depth),colorspace); (void) WriteBlobString(image,buffer); GetMagickPixelPacket(image,&pixel); for (y=0; y < (ssize_t) image->rows; y++) { p=GetVirtualPixels(image,0,y,image->columns,1,&image->exception); if (p == (const PixelPacket *) NULL) break; indexes=GetVirtualIndexQueue(image); for (x=0; x < (ssize_t) image->columns; x++) { (void) FormatMagickString(buffer,MaxTextExtent,"%ld,%ld: ",(long) x, (long) y); (void) WriteBlobString(image,buffer); SetMagickPixelPacket(image,p,indexes+x,&pixel); (void) CopyMagickString(tuple,"(",MaxTextExtent); ConcatenateColorComponent(&pixel,RedChannel,X11Compliance,tuple); (void) ConcatenateMagickString(tuple,",",MaxTextExtent); ConcatenateColorComponent(&pixel,GreenChannel,X11Compliance,tuple); (void) ConcatenateMagickString(tuple,",",MaxTextExtent); ConcatenateColorComponent(&pixel,BlueChannel,X11Compliance,tuple); if (pixel.colorspace == CMYKColorspace) { (void) ConcatenateMagickString(tuple,",",MaxTextExtent); ConcatenateColorComponent(&pixel,IndexChannel,X11Compliance,tuple); } if (pixel.matte != MagickFalse) { (void) ConcatenateMagickString(tuple,",",MaxTextExtent); ConcatenateColorComponent(&pixel,AlphaChannel,X11Compliance,tuple); } (void) ConcatenateMagickString(tuple,")",MaxTextExtent); (void) WriteBlobString(image,tuple); (void) WriteBlobString(image," "); GetColorTuple(&pixel,MagickTrue,tuple); (void) FormatMagickString(buffer,MaxTextExtent,"%s",tuple); (void) WriteBlobString(image,buffer); (void) WriteBlobString(image," "); (void) QueryMagickColorname(image,&pixel,SVGCompliance,tuple, &image->exception); (void) WriteBlobString(image,tuple); (void) WriteBlobString(image,"\n"); p++; } 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); }