Book a Demo!
CoCalc Logo Icon
StoreFeaturesDocsShareSupportNewsAboutPoliciesSign UpSign In
Download
7638 views
Tweet
Share
Share
1
#ifndef PDF_INTERPRET_H

2
#define PDF_INTERPRET_H

3


4
typedef struct pdf_csi_s pdf_csi;

5
typedef struct pdf_gstate_s pdf_gstate;

6
typedef struct pdf_processor_s pdf_processor;

7


8
void *pdf_new_processor(fz_context *ctx, int size);

9
void pdf_drop_processor(fz_context *ctx, pdf_processor *proc);

10


11
struct pdf_processor_s

12
{

13
	void (*drop_imp)(fz_context *ctx, pdf_processor *proc);

14


15
	/* general graphics state */

16
	void (*op_w)(fz_context *ctx, pdf_processor *proc, float linewidth);

17
	void (*op_j)(fz_context *ctx, pdf_processor *proc, int linejoin);

18
	void (*op_J)(fz_context *ctx, pdf_processor *proc, int linecap);

19
	void (*op_M)(fz_context *ctx, pdf_processor *proc, float miterlimit);

20
	void (*op_d)(fz_context *ctx, pdf_processor *proc, pdf_obj *array, float phase);

21
	void (*op_ri)(fz_context *ctx, pdf_processor *proc, const char *intent);

22
	void (*op_i)(fz_context *ctx, pdf_processor *proc, float flatness);

23


24
	void (*op_gs_begin)(fz_context *ctx, pdf_processor *proc, const char *name, pdf_obj *extgstate);

25
	void (*op_gs_BM)(fz_context *ctx, pdf_processor *proc, const char *blendmode);

26
	void (*op_gs_ca)(fz_context *ctx, pdf_processor *proc, float alpha);

27
	void (*op_gs_CA)(fz_context *ctx, pdf_processor *proc, float alpha);

28
	void (*op_gs_SMask)(fz_context *ctx, pdf_processor *proc, pdf_xobject *smask, pdf_obj *page_resources, float *bc, int luminosity);

29
	void (*op_gs_end)(fz_context *ctx, pdf_processor *proc);

30


31
	/* special graphics state */

32
	void (*op_q)(fz_context *ctx, pdf_processor *proc);

33
	void (*op_Q)(fz_context *ctx, pdf_processor *proc);

34
	void (*op_cm)(fz_context *ctx, pdf_processor *proc, float a, float b, float c, float d, float e, float f);

35


36
	/* path construction */

37
	void (*op_m)(fz_context *ctx, pdf_processor *proc, float x, float y);

38
	void (*op_l)(fz_context *ctx, pdf_processor *proc, float x, float y);

39
	void (*op_c)(fz_context *ctx, pdf_processor *proc, float x1, float y1, float x2, float y2, float x3, float y3);

40
	void (*op_v)(fz_context *ctx, pdf_processor *proc, float x2, float y2, float x3, float y3);

41
	void (*op_y)(fz_context *ctx, pdf_processor *proc, float x1, float y1, float x3, float y3);

42
	void (*op_h)(fz_context *ctx, pdf_processor *proc);

43
	void (*op_re)(fz_context *ctx, pdf_processor *proc, float x, float y, float w, float h);

44


45
	/* path painting */

46
	void (*op_S)(fz_context *ctx, pdf_processor *proc);

47
	void (*op_s)(fz_context *ctx, pdf_processor *proc);

48
	void (*op_F)(fz_context *ctx, pdf_processor *proc);

49
	void (*op_f)(fz_context *ctx, pdf_processor *proc);

50
	void (*op_fstar)(fz_context *ctx, pdf_processor *proc);

51
	void (*op_B)(fz_context *ctx, pdf_processor *proc);

52
	void (*op_Bstar)(fz_context *ctx, pdf_processor *proc);

53
	void (*op_b)(fz_context *ctx, pdf_processor *proc);

54
	void (*op_bstar)(fz_context *ctx, pdf_processor *proc);

55
	void (*op_n)(fz_context *ctx, pdf_processor *proc);

56


57
	/* clipping paths */

58
	void (*op_W)(fz_context *ctx, pdf_processor *proc);

59
	void (*op_Wstar)(fz_context *ctx, pdf_processor *proc);

60


61
	/* text objects */

62
	void (*op_BT)(fz_context *ctx, pdf_processor *proc);

63
	void (*op_ET)(fz_context *ctx, pdf_processor *proc);

64


65
	/* text state */

66
	void (*op_Tc)(fz_context *ctx, pdf_processor *proc, float charspace);

67
	void (*op_Tw)(fz_context *ctx, pdf_processor *proc, float wordspace);

68
	void (*op_Tz)(fz_context *ctx, pdf_processor *proc, float scale);

69
	void (*op_TL)(fz_context *ctx, pdf_processor *proc, float leading);

70
	void (*op_Tf)(fz_context *ctx, pdf_processor *proc, const char *name, pdf_font_desc *font, float size);

71
	void (*op_Tr)(fz_context *ctx, pdf_processor *proc, int render);

72
	void (*op_Ts)(fz_context *ctx, pdf_processor *proc, float rise);

73


74
	/* text positioning */

75
	void (*op_Td)(fz_context *ctx, pdf_processor *proc, float tx, float ty);

76
	void (*op_TD)(fz_context *ctx, pdf_processor *proc, float tx, float ty);

77
	void (*op_Tm)(fz_context *ctx, pdf_processor *proc, float a, float b, float c, float d, float e, float f);

78
	void (*op_Tstar)(fz_context *ctx, pdf_processor *proc);

79


80
	/* text showing */

81
	void (*op_TJ)(fz_context *ctx, pdf_processor *proc, pdf_obj *array);

82
	void (*op_Tj)(fz_context *ctx, pdf_processor *proc, char *str, int len);

83
	void (*op_squote)(fz_context *ctx, pdf_processor *proc, char *str, int len);

84
	void (*op_dquote)(fz_context *ctx, pdf_processor *proc, float aw, float ac, char *str, int len);

85


86
	/* type 3 fonts */

87
	void (*op_d0)(fz_context *ctx, pdf_processor *proc, float wx, float wy);

88
	void (*op_d1)(fz_context *ctx, pdf_processor *proc, float wx, float wy, float llx, float lly, float urx, float ury);

89


90
	/* color */

91
	void (*op_CS)(fz_context *ctx, pdf_processor *proc, const char *name, fz_colorspace *cs);

92
	void (*op_cs)(fz_context *ctx, pdf_processor *proc, const char *name, fz_colorspace *cs);

93
	void (*op_SC_pattern)(fz_context *ctx, pdf_processor *proc, const char *name, pdf_pattern *pat, int n, float *color);

94
	void (*op_sc_pattern)(fz_context *ctx, pdf_processor *proc, const char *name, pdf_pattern *pat, int n, float *color);

95
	void (*op_SC_shade)(fz_context *ctx, pdf_processor *proc, const char *name, fz_shade *shade);

96
	void (*op_sc_shade)(fz_context *ctx, pdf_processor *proc, const char *name, fz_shade *shade);

97
	void (*op_SC_color)(fz_context *ctx, pdf_processor *proc, int n, float *color);

98
	void (*op_sc_color)(fz_context *ctx, pdf_processor *proc, int n, float *color);

99


100
	void (*op_G)(fz_context *ctx, pdf_processor *proc, float g);

101
	void (*op_g)(fz_context *ctx, pdf_processor *proc, float g);

102
	void (*op_RG)(fz_context *ctx, pdf_processor *proc, float r, float g, float b);

103
	void (*op_rg)(fz_context *ctx, pdf_processor *proc, float r, float g, float b);

104
	void (*op_K)(fz_context *ctx, pdf_processor *proc, float c, float m, float y, float k);

105
	void (*op_k)(fz_context *ctx, pdf_processor *proc, float c, float m, float y, float k);

106


107
	/* shadings, images, xobjects */

108
	void (*op_BI)(fz_context *ctx, pdf_processor *proc, fz_image *image);

109
	void (*op_sh)(fz_context *ctx, pdf_processor *proc, const char *name, fz_shade *shade);

110
	void (*op_Do_image)(fz_context *ctx, pdf_processor *proc, const char *name, fz_image *image);

111
	void (*op_Do_form)(fz_context *ctx, pdf_processor *proc, const char *name, pdf_xobject *form, pdf_obj *page_resources);

112


113
	/* marked content */

114
	void (*op_MP)(fz_context *ctx, pdf_processor *proc, const char *tag);

115
	void (*op_DP)(fz_context *ctx, pdf_processor *proc, const char *tag, pdf_obj *properties);

116
	void (*op_BMC)(fz_context *ctx, pdf_processor *proc, const char *tag);

117
	void (*op_BDC)(fz_context *ctx, pdf_processor *proc, const char *tag, pdf_obj *properties);

118
	void (*op_EMC)(fz_context *ctx, pdf_processor *proc);

119


120
	/* compatibility */

121
	void (*op_BX)(fz_context *ctx, pdf_processor *proc);

122
	void (*op_EX)(fz_context *ctx, pdf_processor *proc);

123


124
	/* END is used to signify end of stream (finalise and close down) */

125
	void (*op_END)(fz_context *ctx, pdf_processor *proc);

126


127
	/* interpreter state that persists across content streams */

128
	const char *event;

129
	int hidden;

130
};

131


132
struct pdf_csi_s

133
{

134
	/* input */

135
	pdf_document *doc;

136
	pdf_obj *rdb;

137
	pdf_lexbuf *buf;

138
	fz_cookie *cookie;

139


140
	/* state */

141
	int gstate;

142
	int xbalance;

143
	int in_text;

144
	fz_rect d1_rect;

145


146
	/* stack */

147
	pdf_obj *obj;

148
	char name[256];

149
	char string[256];

150
	int string_len;

151
	int top;

152
	float stack[32];

153
};

154


155
/* Functions to set up pdf_process structures */

156
pdf_processor *pdf_new_run_processor(fz_context *ctx, fz_device *dev, const fz_matrix *ctm, const char *event, pdf_gstate *gstate, int nested);

157
pdf_processor *pdf_new_buffer_processor(fz_context *ctx, fz_buffer *buffer);

158
pdf_processor *pdf_new_filter_processor(fz_context *ctx, pdf_processor *chain, pdf_document *doc, pdf_obj *old_res, pdf_obj *new_res);

159


160
/* Functions to actually process annotations, glyphs and general stream objects */

161
void pdf_process_contents(fz_context *ctx, pdf_processor *proc, pdf_document *doc, pdf_obj *obj, pdf_obj *res, fz_cookie *cookie);

162
void pdf_process_annot(fz_context *ctx, pdf_processor *proc, pdf_document *doc, pdf_page *page, pdf_annot *annot, fz_cookie *cookie);

163
void pdf_process_glyph(fz_context *ctx, pdf_processor *proc, pdf_document *doc, pdf_obj *resources, fz_buffer *contents);

164


165
#endif

166


167