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
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
|
#define __SP_PIXBUF_OPS_C__
/*
* Helpers for SPItem -> gdk_pixbuf related stuff
*
* Authors:
* John Cliff <simarilius@yahoo.com>
*
* Copyright (C) 2008 John Cliff
*
* Released under GNU GPL, read the file 'COPYING' for more information
*/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include <interface.h>
#include <libnr/nr-pixops.h>
#include <glib.h>
#include <glib/gmessages.h>
#include <png.h>
#include "png-write.h"
#include <display/nr-arena-item.h>
#include <display/nr-arena.h>
#include <document.h>
#include <sp-item.h>
#include <sp-root.h>
#include <sp-use.h>
#include <sp-defs.h>
#include "unit-constants.h"
#include "libnr/nr-matrix-translate-ops.h"
#include "libnr/nr-scale-ops.h"
#include "libnr/nr-scale-translate-ops.h"
#include "libnr/nr-translate-matrix-ops.h"
#include "libnr/nr-translate-scale-ops.h"
#include "pixbuf-ops.h"
/**
* Hide all items that are not listed in list, recursively, skipping groups and defs.
*/
static void
hide_other_items_recursively(SPObject *o, GSList *list, unsigned dkey)
{
if ( SP_IS_ITEM(o)
&& !SP_IS_DEFS(o)
&& !SP_IS_ROOT(o)
&& !SP_IS_GROUP(o)
&& !SP_IS_USE(o)
&& !g_slist_find(list, o) )
{
sp_item_invoke_hide(SP_ITEM(o), dkey);
}
// recurse
if (!g_slist_find(list, o)) {
for (SPObject *child = sp_object_first_child(o) ; child != NULL; child = SP_OBJECT_NEXT(child) ) {
hide_other_items_recursively(child, list, dkey);
}
}
}
// The following is a mutation of the flood fill code, the marker preview, and random other samplings.
// The dpi settings dont do anything yet, but I want them to, and was wanting to keep reasonably close
// to the call for the interface to the png writing.
bool
sp_export_jpg_file(SPDocument *doc, gchar const *filename,
double x0, double y0, double x1, double y1,
unsigned width, unsigned height, double xdpi, double ydpi,
unsigned long bgcolor, double quality,GSList *items)
{
GdkPixbuf* pixbuf;
pixbuf = sp_generate_internal_bitmap(doc, filename, x0, y0, x1, y1,
width, height, xdpi, ydpi,
bgcolor, items );
gchar c[32];
g_snprintf(c, 32, "%f", quality);
gboolean saved = gdk_pixbuf_save (pixbuf, filename, "jpeg", NULL, "quality", c, NULL);
g_free(c);
gdk_pixbuf_unref (pixbuf);
if (saved) return true;
else return false;
}
GdkPixbuf*
sp_generate_internal_bitmap(SPDocument *doc, gchar const */*filename*/,
double x0, double y0, double x1, double y1,
unsigned width, unsigned height, double xdpi, double ydpi,
unsigned long bgcolor,
GSList *items_only)
{
GdkPixbuf* pixbuf = NULL;
/* Create new arena for offscreen rendering*/
NRArena *arena = NRArena::create();
nr_arena_set_renderoffscreen(arena);
unsigned dkey = sp_item_display_key_new(1);
sp_document_ensure_up_to_date (doc);
Geom::Rect screen=Geom::Rect(Geom::Point(x0,y0), Geom::Point(x1, y1));
double padding = 1.0;
Geom::Point origin(screen.min()[Geom::X],
sp_document_height(doc) - screen[Geom::Y].extent() - screen.min()[Geom::Y]);
origin[Geom::X] = origin[Geom::X] + (screen[Geom::X].extent() * ((1 - padding) / 2));
origin[Geom::Y] = origin[Geom::Y] + (screen[Geom::Y].extent() * ((1 - padding) / 2));
Geom::Scale scale( (xdpi / PX_PER_IN), (ydpi / PX_PER_IN));
Geom::Matrix affine = scale * Geom::Translate(-origin * scale);
/* Create ArenaItems and set transform */
NRArenaItem *root = sp_item_invoke_show(SP_ITEM(sp_document_root(doc)), arena, dkey, SP_ITEM_SHOW_DISPLAY);
nr_arena_item_set_transform(NR_ARENA_ITEM(root), affine);
NRGC gc(NULL);
gc.transform.setIdentity();
// We show all and then hide all items we don't want, instead of showing only requested items,
// because that would not work if the shown item references something in defs
if (items_only) {
hide_other_items_recursively(sp_document_root(doc), items_only, dkey);
}
NRRectL final_bbox;
final_bbox.x0 = 0;
final_bbox.y0 = 0;//row;
final_bbox.x1 = width;
final_bbox.y1 = height;//row + num_rows;
nr_arena_item_invoke_update(root, &final_bbox, &gc, NR_ARENA_ITEM_STATE_ALL, NR_ARENA_ITEM_STATE_NONE);
guchar *px = NULL;
guint64 size = 4L * (guint64)width * (guint64)height;
if(size < (guint64)G_MAXSIZE) {
// g_try_new is limited to g_size type which is defined as unisgned int. Need to test for very large nubers
px = g_try_new(guchar, size);
}
if(px != NULL)
{
NRPixBlock B;
//g_warning("sp_generate_internal_bitmap: nr_pixblock_setup_extern.");
nr_pixblock_setup_extern( &B, NR_PIXBLOCK_MODE_R8G8B8A8N,
final_bbox.x0, final_bbox.y0, final_bbox.x1, final_bbox.y1,
px, 4 * width, FALSE, FALSE );
unsigned char dtc[4];
dtc[0] = NR_RGBA32_R(bgcolor);
dtc[1] = NR_RGBA32_G(bgcolor);
dtc[2] = NR_RGBA32_B(bgcolor);
dtc[3] = NR_RGBA32_A(bgcolor);
for (gsize fy = 0; fy < height; fy++) {
guchar *p = NR_PIXBLOCK_PX(&B) + fy * (gsize)B.rs;
for (unsigned int fx = 0; fx < width; fx++) {
for (int i = 0; i < 4; i++) {
*p++ = dtc[i];
}
}
}
nr_arena_item_invoke_render(NULL, root, &final_bbox, &B, NR_ARENA_ITEM_RENDER_NO_CACHE );
pixbuf = gdk_pixbuf_new_from_data(px, GDK_COLORSPACE_RGB,
TRUE,
8, width, height, width * 4,
(GdkPixbufDestroyNotify)g_free,
NULL);
}
else
{
g_warning("sp_generate_internal_bitmap: not enough memory to create pixel buffer. Need %lld.", size);
}
sp_item_invoke_hide (SP_ITEM(sp_document_root(doc)), dkey);
nr_object_unref((NRObject *) arena);
// gdk_pixbuf_save (pixbuf, "C:\\temp\\internal.jpg", "jpeg", NULL, "quality","100", NULL);
return pixbuf;
}
/*
Local Variables:
mode:c++
c-file-style:"stroustrup"
c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
indent-tabs-mode:nil
fill-column:99
End:
*/
// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=99 :
|
