3 Part of the swftools package.
5 Copyright (c) 2006 Matthias Kramm <kramm@quiss.org>
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
33 #include "../gfxdevice.h"
34 #include "../gfxtools.h"
36 typedef struct _internal {
48 static int verbose = 1;
49 static void dbg(char*format, ...)
56 va_start(arglist, format);
57 vsprintf(buf, format, arglist);
60 while(l && buf[l-1]=='\n') {
64 printf("(device-rescale) %s\n", buf);
68 char gfxline_isRect(gfxline_t*line)
73 double x1=line->x,y1=line->x,x2=line->x,y2=line->y;
74 int nx1=0,nx2=0,ny1=0,ny2=0;
77 if(line->type != gfx_lineTo)
82 } else if(line->y < y1) {
85 } else if(line->x > x2) {
88 } else if(line->y > y1) {
94 return (nx1+nx2)==1 && (ny1+ny2)==1;
97 gfxline_t*transformgfxline(internal_t*i, gfxline_t*line)
99 /* special case: transformed rectangle
100 if(gfxline_isRect(line)) {
101 gfxbbox_t bbox = gfxline_getbbox(line);
102 if(fabs(bbox.xmin)<0.1 && fabs(bbox.ymin)<0.1 &&
103 fabs(bbox.ymax-i->origwidth)<0.1 && fabs(bbox.ymax-i->origheight)<0.1) {
105 r[0].x = 0; r[0].y = 0; r[0].type = gfx_moveTo;r[0].next = &r[1];
106 r[1].x = i->targetwidth;r[1].y = 0; r[1].type = gfx_lineTo;r[1].next = &r[2];
107 r[2].x = i->targetwidth;r[2].y = i->targetheight;r[2].type = gfx_lineTo;r[2].next = &r[3];
108 r[3].x = 0; r[3].y = i->targetheight;r[3].type = gfx_lineTo;r[3].next = &r[4];
109 r[4].x = 0; r[4].y = 0; r[4].type = gfx_lineTo;r[4].next = 0;
110 return gfxline_clone(r);
113 gfxline_t*line2 = gfxline_clone(line);
114 gfxline_transform(line2, &i->matrix);
118 int rescale_setparameter(gfxdevice_t*dev, const char*key, const char*value)
120 internal_t*i = (internal_t*)dev->internal;
121 if(!strcmp(key, "keepratio")) {
122 i->keepratio = atoi(value);
126 return i->out->setparameter(i->out,key,value);
133 void rescale_startpage(gfxdevice_t*dev, int width, int height)
135 internal_t*i = (internal_t*)dev->internal;
137 i->origwidth = width;
138 i->origheight = height;
140 if(i->targetwidth && i->targetheight) {
142 double rx = (double)i->targetwidth / (double)width;
143 double ry = (double)i->targetheight / (double)height;
149 i->matrix.ty = (i->targetheight - height*rx) / 2;
155 i->matrix.tx = (i->targetwidth - width*ry) / 2;
160 i->matrix.m00 = (double)i->targetwidth / (double)width;
161 i->matrix.m11 = (double)i->targetheight / (double)height;
163 i->zoomwidth = sqrt(i->matrix.m00*i->matrix.m11);
164 i->out->startpage(i->out,i->targetwidth,i->targetheight);
166 i->out->startpage(i->out,(int)(width*i->matrix.m00),(int)(height*i->matrix.m11));
170 void rescale_startclip(gfxdevice_t*dev, gfxline_t*line)
172 internal_t*i = (internal_t*)dev->internal;
173 gfxline_t*line2 = transformgfxline(i, line);
174 i->out->startclip(i->out,line2);
178 void rescale_endclip(gfxdevice_t*dev)
180 internal_t*i = (internal_t*)dev->internal;
181 i->out->endclip(i->out);
184 void rescale_stroke(gfxdevice_t*dev, gfxline_t*line, gfxcoord_t width, gfxcolor_t*color, gfx_capType cap_style, gfx_joinType joint_style, gfxcoord_t miterLimit)
186 internal_t*i = (internal_t*)dev->internal;
187 gfxline_t*line2 = transformgfxline(i, line);
188 i->out->stroke(i->out, line2, width*i->zoomwidth, color, cap_style, joint_style, miterLimit);
192 void rescale_fill(gfxdevice_t*dev, gfxline_t*line, gfxcolor_t*color)
194 internal_t*i = (internal_t*)dev->internal;
195 gfxline_t*line2 = transformgfxline(i, line);
196 i->out->fill(i->out, line2, color);
200 void rescale_fillbitmap(gfxdevice_t*dev, gfxline_t*line, gfximage_t*img, gfxmatrix_t*matrix, gfxcxform_t*cxform)
202 internal_t*i = (internal_t*)dev->internal;
203 gfxline_t*line2 = transformgfxline(i, line);
205 gfxmatrix_multiply(&i->matrix, matrix, &m2);
206 i->out->fillbitmap(i->out, line2, img, &m2, cxform);
210 void rescale_fillgradient(gfxdevice_t*dev, gfxline_t*line, gfxgradient_t*gradient, gfxgradienttype_t type, gfxmatrix_t*matrix)
212 internal_t*i = (internal_t*)dev->internal;
213 gfxline_t*line2 = transformgfxline(i, line);
214 i->out->fillgradient(i->out, line, gradient, type, matrix);
218 void rescale_addfont(gfxdevice_t*dev, gfxfont_t*font)
220 internal_t*i = (internal_t*)dev->internal;
221 i->out->addfont(i->out, font);
224 void rescale_drawchar(gfxdevice_t*dev, gfxfont_t*font, int glyphnr, gfxcolor_t*color, gfxmatrix_t*matrix)
226 internal_t*i = (internal_t*)dev->internal;
228 gfxmatrix_multiply(&i->matrix, matrix, &m2);
229 i->out->drawchar(i->out, font, glyphnr, color, &m2);
232 void rescale_drawlink(gfxdevice_t*dev, gfxline_t*line, const char*action)
234 internal_t*i = (internal_t*)dev->internal;
235 gfxline_t*line2 = transformgfxline(i, line);
236 i->out->drawlink(i->out, line, action);
240 void rescale_endpage(gfxdevice_t*dev)
242 internal_t*i = (internal_t*)dev->internal;
243 i->out->endpage(i->out);
246 gfxresult_t* rescale_finish(gfxdevice_t*dev)
248 internal_t*i = (internal_t*)dev->internal;
249 gfxdevice_t*out = i->out;
250 free(dev->internal);dev->internal = 0;i=0;
252 return out->finish(out);
258 void gfxdevice_rescale_init(gfxdevice_t*dev, gfxdevice_t*out, int width, int height, double scale)
260 internal_t*i = (internal_t*)rfx_calloc(sizeof(internal_t));
261 memset(dev, 0, sizeof(gfxdevice_t));
263 dev->name = "rescale";
267 dev->setparameter = rescale_setparameter;
268 dev->startpage = rescale_startpage;
269 dev->startclip = rescale_startclip;
270 dev->endclip = rescale_endclip;
271 dev->stroke = rescale_stroke;
272 dev->fill = rescale_fill;
273 dev->fillbitmap = rescale_fillbitmap;
274 dev->fillgradient = rescale_fillgradient;
275 dev->addfont = rescale_addfont;
276 dev->drawchar = rescale_drawchar;
277 dev->drawlink = rescale_drawlink;
278 dev->endpage = rescale_endpage;
279 dev->finish = rescale_finish;
281 gfxmatrix_unit(&i->matrix);
282 i->targetwidth = width;
283 i->targetheight = height;
287 i->matrix.m00 = scale;
289 i->matrix.m11 = scale;
293 i->zoomwidth = scale;
298 void gfxdevice_rescale_setzoom(gfxdevice_t*dev, double scale)
300 internal_t*i = (internal_t*)dev->internal;
301 if(strcmp(dev->name, "rescale")) {
302 fprintf(stderr, "Internal error: can't cast device %s to a rescale device\n", dev->name);
305 i->matrix.m00 = scale;
307 i->matrix.m11 = scale;
311 i->zoomwidth = scale;
313 void gfxdevice_rescale_setdevice(gfxdevice_t*dev, gfxdevice_t*out)
315 internal_t*i = (internal_t*)dev->internal;
316 if(strcmp(dev->name, "rescale")) {
317 fprintf(stderr, "Internal error: can't cast device %s to a rescale device\n", dev->name);