summaryrefslogtreecommitdiff
path: root/apps/pdfapp.h
blob: 22e4ba67fef64303212707147b58f855e8ccfdfe (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
#ifndef PDFAPP_H
#define PDFAPP_H

#include "fitz.h"

/*
 * Utility object for handling a pdf application / view
 * Takes care of PDF loading and displaying and navigation,
 * uses a number of callbacks to the GUI app.
 */

#define MINRES 54
#define MAXRES 300

typedef struct pdfapp_s pdfapp_t;

enum { ARROW, HAND, WAIT, CARET };

enum { DISCARD, SAVE, CANCEL };

extern void winwarn(pdfapp_t*, char *s);
extern void winerror(pdfapp_t*, char *s);
extern void wintitle(pdfapp_t*, char *title);
extern void winresize(pdfapp_t*, int w, int h);
extern void winrepaint(pdfapp_t*);
extern void winrepaintsearch(pdfapp_t*);
extern char *winpassword(pdfapp_t*, char *filename);
extern char *wintextinput(pdfapp_t*, char *inittext, int retry);
extern int winchoiceinput(pdfapp_t*, int nopts, char *opts[], int *nvals, char *vals[]);
extern void winopenuri(pdfapp_t*, char *s);
extern void wincursor(pdfapp_t*, int curs);
extern void windocopy(pdfapp_t*);
extern void winreloadfile(pdfapp_t*);
extern void windrawstring(pdfapp_t*, int x, int y, char *s);
extern void winclose(pdfapp_t*);
extern void winhelp(pdfapp_t*);
extern void winfullscreen(pdfapp_t*, int state);
extern int winsavequery(pdfapp_t*);
extern int wingetsavepath(pdfapp_t*, char *buf, int len);
extern void winalert(pdfapp_t *, fz_alert_event *alert);
extern void winprint(pdfapp_t *);
extern void winadvancetimer(pdfapp_t *, float duration);
extern void winreplacefile(char *source, char *target);

struct pdfapp_s
{
	/* current document params */
	fz_document *doc;
	char *docpath;
	char *doctitle;
	fz_outline *outline;

	int pagecount;

	/* current view params */
	int resolution;
	int rotate;
	fz_pixmap *image;
	int grayscale;
	fz_colorspace *colorspace;
	int invert;

	/* presentation mode */
	int presentation_mode;
	int transitions_enabled;
	fz_pixmap *old_image;
	fz_pixmap *new_image;
	clock_t start_time;
	int in_transit;
	float duration;
	fz_transition transition;

	/* current page params */
	int pageno;
	fz_page *page;
	fz_rect page_bbox;
	fz_display_list *page_list;
	fz_display_list *annotations_list;
	fz_text_page *page_text;
	fz_text_sheet *page_sheet;
	fz_link *page_links;
	int errored;

	/* snapback history */
	int hist[256];
	int histlen;
	int marks[10];

	/* window system sizes */
	int winw, winh;
	int scrw, scrh;
	int shrinkwrap;
	int fullscreen;

	/* event handling state */
	char number[256];
	int numberlen;

	int ispanning;
	int panx, pany;

	int iscopying;
	int selx, sely;
	/* TODO - While sely keeps track of the relative change in
	 * cursor position between two ticks/events, beyondy shall keep
	 * track of the relative change in cursor position from the
	 * point where the user hits a scrolling limit. This is ugly.
	 * Used in pdfapp.c:pdfapp_onmouse.
	 */
	int beyondy;
	fz_bbox selr;

	int nowaitcursor;

	/* search state */
	int isediting;
	int searchdir;
	char search[512];
	int hit;
	int hitlen;

	/* client context storage */
	void *userdata;

	fz_context *ctx;
};

void pdfapp_init(fz_context *ctx, pdfapp_t *app);
void pdfapp_open(pdfapp_t *app, char *filename, int reload);
void pdfapp_close(pdfapp_t *app);
int pdfapp_preclose(pdfapp_t *app);

char *pdfapp_version(pdfapp_t *app);
char *pdfapp_usage(pdfapp_t *app);

void pdfapp_onkey(pdfapp_t *app, int c);
void pdfapp_onmouse(pdfapp_t *app, int x, int y, int btn, int modifiers, int state);
void pdfapp_oncopy(pdfapp_t *app, unsigned short *ucsbuf, int ucslen);
void pdfapp_onresize(pdfapp_t *app, int w, int h);
void pdfapp_gotopage(pdfapp_t *app, int number);

void pdfapp_invert(pdfapp_t *app, fz_bbox rect);
void pdfapp_inverthit(pdfapp_t *app);

void pdfapp_postblit(pdfapp_t *app);

#endif