% %
% PPPP AAA N N GGGG OOO %
% P P A A NN N G O O %
-% PPPP AAAAA N N N G GG O O %
-% P A A N NN G G O O %
-% P A A N N GGG OOO %
+% PPPP AAAAA N N N G GGG O O %
+% P M A A N NN G G O O %
+% P A A N N GGGG OOO %
% %
% %
-% Read Text Caption. %
+% Read Pango Markup Language Format %
% %
% Software Design %
% John Cristy %
-% February 2002 %
+% March 2012 %
% %
% %
% Copyright 1999-2012 ImageMagick Studio LLC, a non-profit organization %
#include "MagickCore/image-private.h"
#include "MagickCore/list.h"
#include "MagickCore/magick.h"
-#include "MagickCore/memory_.h"
#include "MagickCore/module.h"
+#include "MagickCore/memory_.h"
#include "MagickCore/option.h"
+#include "MagickCore/pixel-accessor.h"
#include "MagickCore/property.h"
#include "MagickCore/quantum-private.h"
#include "MagickCore/static.h"
#include <pango/pango-features.h>
#endif
\f
+#if defined(MAGICKCORE_PANGOFT2_DELEGATE)
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
-% ReadPANGOImage() reads a PANGO image file and returns it. It
-% allocates the memory necessary for the new Image structure and returns a
-% pointer to the new image.
+% ReadPANGOImage() reads an image in the Pango Markup Language Format.
%
% The format of the ReadPANGOImage method is:
%
% o exception: return any errors or warnings in this structure.
%
*/
-#if defined(MAGICKCORE_PANGOFT2_DELEGATE)
+
static void PangoSubstitute(FcPattern *pattern,void *context)
{
const char
FcPatternAddBool(pattern,FC_AUTOHINT,LocaleCompare(option,"auto") == 0);
}
-static MagickBooleanType PangoImage(const ImageInfo *image_info,Image *image,
- const DrawInfo *draw_info,ExceptionInfo *exception)
+static Image *ReadPANGOImage(const ImageInfo *image_info,
+ ExceptionInfo *exception)
{
+ char
+ *caption,
+ *property;
+
const char
*option;
+ DrawInfo
+ *draw_info;
+
FT_Bitmap
*canvas;
+ Image
+ *image;
+
PangoAlignment
align;
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);
+ (void) ResetImagePage(image,"0x0+0+0");
/*
Get context.
*/
option=GetImageOption(image_info,"pango:language");
if (option != (const char *) NULL)
pango_context_set_language(context,pango_language_from_string(option));
+ draw_info=CloneDrawInfo(image_info,(DrawInfo *) NULL);
pango_context_set_base_dir(context,draw_info->direction ==
RightToLeftDirection ? PANGO_DIRECTION_RTL : PANGO_DIRECTION_LTR);
switch (draw_info->gravity)
default:
{
if (draw_info->gravity == CenterGravity)
- {
+ {
align=PANGO_ALIGN_CENTER;
break;
}
pango_layout_set_alignment(layout,align);
description=pango_font_description_from_string(draw_info->font ==
(char *) NULL ? "helvetica" : draw_info->font);
- pango_font_description_set_size(description,(int) (0.815*PANGO_SCALE*
- draw_info->pointsize+0.5));
+ pango_font_description_set_size(description,PANGO_SCALE*draw_info->pointsize);
pango_layout_set_font_description(layout,description);
pango_font_description_free(description);
+ property=InterpretImageProperties(image_info,image,image_info->filename,
+ exception);
+ (void) SetImageProperty(image,"caption",property,exception);
+ property=DestroyString(property);
+ caption=ConstantString(GetImageProperty(image,"caption",exception));
/*
Render caption.
*/
option=GetImageOption(image_info,"pango:markup");
if ((option != (const char *) NULL) && (IsMagickTrue(option) != MagickFalse))
- pango_layout_set_markup(layout,draw_info->text,-1);
+ pango_layout_set_markup(layout,caption,-1);
else
- pango_layout_set_text(layout,draw_info->text,-1);
+ pango_layout_set_text(layout,caption,-1);
pango_layout_context_changed(layout);
page.x=0;
page.y=0;
*/
canvas=(FT_Bitmap *) AcquireMagickMemory(sizeof(*canvas));
if (canvas == (FT_Bitmap *) NULL)
- ThrowBinaryException(ResourceLimitError,"MemoryAllocationFailed",
- image->filename);
+ {
+ draw_info=DestroyDrawInfo(draw_info);
+ ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
+ }
canvas->width=image->columns;
canvas->pitch=(canvas->width+3) & ~3;
canvas->rows=image->rows;
canvas->rows*sizeof(*canvas->buffer));
if (canvas->buffer == (unsigned char *) NULL)
{
+ draw_info=DestroyDrawInfo(draw_info);
canvas=(FT_Bitmap *) RelinquishMagickMemory(canvas);
- ThrowBinaryException(ResourceLimitError,"MemoryAllocationFailed",
- image->filename);
+ ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
}
canvas->num_grays=256;
canvas->pixel_mode=ft_pixel_mode_grays;
image->rows+=2*page.y;
if (SetImageBackgroundColor(image,exception) == MagickFalse)
{
+ draw_info=DestroyDrawInfo(draw_info);
canvas->buffer=(unsigned char *) RelinquishMagickMemory(canvas->buffer);
canvas=(FT_Bitmap *) RelinquishMagickMemory(canvas);
+ caption=DestroyString(caption);
image=DestroyImageList(image);
- return(MagickFalse);
+ return((Image *) NULL);
}
GetPixelInfo(image,&fill_color);
p=canvas->buffer;
/*
Relinquish resources.
*/
+ draw_info=DestroyDrawInfo(draw_info);
canvas->buffer=(unsigned char *) RelinquishMagickMemory(canvas->buffer);
canvas=(FT_Bitmap *) RelinquishMagickMemory(canvas);
- return(MagickTrue);
-}
-#endif
-
-static Image *ReadPANGOImage(const ImageInfo *image_info,
- ExceptionInfo *exception)
-{
- char
- *caption,
- geometry[MaxTextExtent],
- *property;
-
- const char
- *gravity,
- *option;
-
- DrawInfo
- *draw_info;
-
- Image
- *image;
-
- MagickBooleanType
- status;
-
- register ssize_t
- i;
-
- size_t
- height,
- width;
-
- TypeMetric
- metrics;
-
- /*
- 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)
- ThrowReaderException(OptionError,"MustSpecifyImageSize");
- (void) ResetImagePage(image,"0x0+0+0");
- /*
- Format caption.
- */
- property=InterpretImageProperties(image_info,image,image_info->filename,
- exception);
- option=GetImageOption(image_info,"filename");
- if (option == (const char *) NULL)
- property=InterpretImageProperties(image_info,image,image_info->filename,
- exception);
- else
- if (LocaleNCompare(option,"pango:",8) == 0)
- property=InterpretImageProperties(image_info,image,option+8,exception);
- else
- property=InterpretImageProperties(image_info,image,option,exception);
- (void) SetImageProperty(image,"caption",property,exception);
- property=DestroyString(property);
- caption=ConstantString(GetImageProperty(image,"caption",exception));
- draw_info=CloneDrawInfo(image_info,(DrawInfo *) NULL);
- (void) CloneString(&draw_info->text,caption);
- gravity=GetImageOption(image_info,"gravity");
- if (gravity != (char *) NULL)
- draw_info->gravity=(GravityType) ParseCommandOption(MagickGravityOptions,
- MagickFalse,gravity);
- if ((*caption != '\0') && (image->rows != 0) &&
- (image_info->pointsize == 0.0))
- {
- char
- *text;
-
- /*
- Scale text to fit bounding box.
- */
- for ( ; ; )
- {
- text=AcquireString(caption);
- i=FormatMagickCaption(image,draw_info,MagickFalse,&metrics,&text,
- exception);
- (void) CloneString(&draw_info->text,text);
- text=DestroyString(text);
- (void) FormatLocaleString(geometry,MaxTextExtent,"%+g%+g",
- -metrics.bounds.x1,metrics.ascent);
- if (draw_info->gravity == UndefinedGravity)
- (void) CloneString(&draw_info->geometry,geometry);
- status=GetMultilineTypeMetrics(image,draw_info,&metrics,exception);
- (void) status;
- width=(size_t) floor(metrics.width+draw_info->stroke_width+0.5);
- height=(size_t) floor(metrics.height+draw_info->stroke_width+0.5);
- if ((width > (image->columns+1)) || (height > (image->rows+1)))
- break;
- draw_info->pointsize*=2.0;
- }
- draw_info->pointsize/=2.0;
- for ( ; ; )
- {
- text=AcquireString(caption);
- i=FormatMagickCaption(image,draw_info,MagickFalse,&metrics,&text,
- exception);
- (void) CloneString(&draw_info->text,text);
- text=DestroyString(text);
- (void) FormatLocaleString(geometry,MaxTextExtent,"%+g%+g",
- -metrics.bounds.x1,metrics.ascent);
- if (draw_info->gravity == UndefinedGravity)
- (void) CloneString(&draw_info->geometry,geometry);
- status=GetMultilineTypeMetrics(image,draw_info,&metrics,exception);
- width=(size_t) floor(metrics.width+draw_info->stroke_width+0.5);
- height=(size_t) floor(metrics.height+draw_info->stroke_width+0.5);
- if ((width > (image->columns+1)) || (height > (image->rows+1)))
- break;
- draw_info->pointsize++;
- }
- draw_info->pointsize--;
- }
- i=FormatMagickCaption(image,draw_info,MagickTrue,&metrics,&caption,exception);
- if (image->rows == 0)
- image->rows=(size_t) ((i+1)*(metrics.ascent-metrics.descent+
- draw_info->interline_spacing+draw_info->stroke_width)+0.5);
- if (image->rows == 0)
- image->rows=(size_t) ((i+1)*draw_info->pointsize+
- draw_info->interline_spacing+draw_info->stroke_width+0.5);
- if (SetImageBackgroundColor(image,exception) == MagickFalse)
- {
- image=DestroyImageList(image);
- return((Image *) NULL);
- }
- /*
- Draw caption.
- */
- (void) CloneString(&draw_info->text,caption);
- status=GetMultilineTypeMetrics(image,draw_info,&metrics,exception);
- if ((draw_info->gravity != UndefinedGravity) &&
- (draw_info->direction != RightToLeftDirection))
- image->page.x=(ssize_t) (metrics.bounds.x1-draw_info->stroke_width/2.0);
- else
- {
- (void) FormatLocaleString(geometry,MaxTextExtent,"%+g%+g",
- -metrics.bounds.x1+draw_info->stroke_width/2.0,metrics.ascent+
- draw_info->stroke_width/2.0);
- if (draw_info->direction == RightToLeftDirection)
- (void) FormatLocaleString(geometry,MaxTextExtent,"%+g%+g",
- image->columns-(metrics.bounds.x2+draw_info->stroke_width/2.0),
- metrics.ascent+draw_info->stroke_width/2.0);
- draw_info->geometry=AcquireString(geometry);
- }
-#if defined(MAGICKCORE_PANGOFT2_DELEGATE)
- status=PangoImage(image_info,image,draw_info,exception);
-#else
- status=AnnotateImage(image,draw_info,exception);
-#endif
- draw_info=DestroyDrawInfo(draw_info);
caption=DestroyString(caption);
- if (status == MagickFalse)
- {
- image=DestroyImageList(image);
- return((Image *) NULL);
- }
return(GetFirstImageInList(image));
}
+#endif
\f
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
-% RegisterPANGOImage() adds attributes for the PANGO image format to
+% RegisterPANGOImage() adds attributes for the Pango Markup Language 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,
*version='\0';
#if defined(PANGO_VERSION_STRING)
- (void) FormatLocaleString(version,MaxTextExtent,"Pangoft2 %s",
+ (void) FormatLocaleString(version,MaxTextExtent,"(Pangoft2 %s)",
PANGO_VERSION_STRING);
#endif
entry=SetMagickInfo("PANGO");
+#if defined(MAGICKCORE_PANGOFT2_DELEGATE)
entry->decoder=(DecodeImageHandler *) ReadPANGOImage;
- entry->description=ConstantString("Caption");
+#endif
+ entry->description=ConstantString("Pango Markup Language");
if (*version != '\0')
entry->version=ConstantString(version);
entry->adjoin=MagickFalse;
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
-% UnregisterPANGOImage() removes format registrations made by the
-% PANGO module from the list of supported formats.
+% UnregisterPANGOImage() removes format registrations made by the Pango module
+% from the list of supported formats.
%
% The format of the UnregisterPANGOImage method is:
%
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