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/** @file
Parser: @b image parser type decl.
Copyright (c) 2001-2017 Art. Lebedev Studio (http://www.artlebedev.com)
Author: Alexandr Petrosian <[email protected]> (http://paf.design.ru)
*/
#ifndef PA_VIMAGE_H
#define PA_VIMAGE_H
#define IDENT_PA_VIMAGE_H "$Id: pa_vimage.h,v 1.57 2017/02/07 22:00:48 moko Exp $"
#include "classes.h"
#include "pa_common.h"
#include "pa_vstateless_object.h"
#include "pa_charset.h"
// defines
#define VIMAGE_TYPE "image"
#define EXIF_ELEMENT_NAME "exif"
// forwards
class gdImage;
/// simple gdImage-based font storage & text output
class Font: public PA_Object {
public:
int letterspacing;
int height; ///< Font heigth
int monospace; ///< Default char width
int spacebarspace; ///< spacebar width
gdImage* ifont;
const String& alphabet;
Font(
Charset& acharset, const String& aalphabet,
gdImage* aifont, int aheight, int amonospace, int aspacebarspace, int aletterspacing);
//@{******************************** char **********************************
size_t index_of(char ch);
size_t index_of(XMLCh ch);
int index_width(size_t index);
void index_display(gdImage& image, int x, int y, size_t index);
//@}
//@{******************************* string *********************************
int step_width(int index);
//@}
/// counts trailing letter_spacing, consider this OK. useful for contiuations
int string_width(const String& s);
void string_display(gdImage& image, int x, int y, const String& s);
private:
Charset& fsource_charset;
Hash<XMLCh, size_t> fletter2index;
};
// externs
extern Methoded* image_class;
/** holds img attributes
and [image itself]
*/
class VImage: public VStateless_object {
public: // Value
override const char* type() const { return VIMAGE_TYPE; }
override VStateless_class *get_class() { return image_class; }
/// VImage: true
override bool as_bool() const { return true; }
/// VImage: true
override Value& as_expr_result();
/// VImage: method,field
override Value* get_element(const String& aname);
/// VImage: field
override const VJunction* put_element(const String& name, Value* value);
public: // usage
void set(const String* src, int width, int height,
gdImage* aimage,
Value* aexif=0);
HashStringValue& fields() { return ffields; }
public:
gdImage& image() {
if(!fimage)
throw Exception(PARSER_RUNTIME,
0,
"using uninitialized image object");
return *fimage;
}
void set_font(Font* afont) { ffont=afont; }
Font& font() {
if(!ffont)
throw Exception(PARSER_RUNTIME,
0,
"set the font first");
return *ffont;
}
private:
gdImage* fimage;
Font* ffont;
HashStringValue ffields;
Value* fexif;
};
#endif
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