Implement a device interface and a tracing device for fitz.

1 files changed, 132 insertions, 0 deletions

diff --git a/fitz/dev_trace.c b/fitz/dev_trace.c
new file mode 100644
index 00000000..85118e1b
--- /dev/null
+++ b/fitz/dev_trace.c
@@ -0,0 +1,132 @@
+#include "fitz.h"
+
+static void fz_tracematrix(fz_matrix *ctm)
+{
+	printf("%g %g %g %g %g %g setmatrix\n",
+		ctm->a, ctm->b, ctm->c, ctm->d, ctm->e, ctm->f);
+}
+
+static void fz_tracecolor(fz_colorspace *colorspace, float *color, float alpha)
+{
+	printf("... setcolor\n");
+	printf("%g setalpha\n", alpha);
+}
+
+void fz_tracefillpath(void *user, fz_path *path, fz_colorspace *colorspace, float *color, float alpha)
+{
+	fz_tracematrix(&path->ctm);
+	fz_printpath(path, 0);
+	if (path->winding == FZ_EVENODD)
+		printf("eofill\n");
+	else
+		printf("fill\n");
+}
+
+void fz_tracestrokepath(void *user, fz_path *path, fz_colorspace *colorspace, float *color, float alpha)
+{
+	int i;
+
+	fz_tracecolor(colorspace, color, alpha);
+	fz_tracematrix(&path->ctm);
+
+	printf("%g setlinewidth\n", path->linewidth);
+	printf("%g setmiterlimit\n", path->miterlimit);
+	printf("%d setlinecap\n", path->linecap);
+	printf("%d setlinejoin\n", path->linejoin);
+
+	if (path->dashlen)
+	{
+		printf("%g [ ", path->dashphase);
+		for (i = 0; i < path->dashlen; i++)
+			printf("%g ", path->dashlist[i]);
+		printf("] setdash\n");
+	}
+
+	fz_printpath(path, 0);
+
+	printf("stroke\n");
+}
+
+void fz_traceclippath(void *user, fz_path *path)
+{
+	printf("gsave\n");
+	fz_tracematrix(&path->ctm);
+	fz_printpath(path, 0);
+	if (path->winding == FZ_EVENODD)
+		printf("eoclip\n");
+	else
+		printf("clip\n");
+}
+
+void fz_tracefilltext(void *user, fz_text *text, fz_colorspace *colorspace, float *color, float alpha)
+{
+	printf("/%s setfont\n", text->font->name);
+	fz_tracematrix(&text->trm);
+	fz_debugtext(text, 0);
+	printf("show\n");
+}
+
+void fz_tracestroketext(void *user, fz_text *text, fz_colorspace *colorspace, float *color, float alpha)
+{
+	printf("/%s setfont\n", text->font->name);
+	fz_tracematrix(&text->trm);
+	fz_debugtext(text, 0);
+	printf("charpath stroke\n");
+}
+
+void fz_tracecliptext(void *user, fz_text *text)
+{
+	printf("gsave\n");
+	printf("/%s setfont\n", text->font->name);
+	fz_tracematrix(&text->trm);
+	fz_debugtext(text, 0);
+	printf("charpath clip\n");
+}
+
+void fz_traceignoretext(void *user, fz_text *text)
+{
+	printf("/%s setfont\n", text->font->name);
+	fz_tracematrix(&text->trm);
+	fz_debugtext(text, 0);
+	printf("invisibletext\n");
+}
+
+void fz_tracedrawimage(void *user, fz_image *image, fz_matrix *ctm)
+{
+	fz_tracematrix(ctm);
+	printf("drawimage\n");
+}
+
+void fz_tracedrawshade(void *user, fz_shade *shade, fz_matrix *ctm)
+{
+	fz_tracematrix(ctm);
+	printf("drawshade\n");
+}
+
+void fz_tracepopclip(void *user)
+{
+	printf("grestore\n");
+}
+
+fz_device *fz_newtracedevice(void)
+{
+	fz_device *dev = fz_malloc(sizeof(fz_device));
+	dev->user = nil;
+
+	dev->fillpath = fz_tracefillpath;
+	dev->strokepath = fz_tracestrokepath;
+	dev->clippath = fz_traceclippath;
+
+	dev->filltext = fz_tracefilltext;
+	dev->stroketext = fz_tracestroketext;
+	dev->cliptext = fz_tracecliptext;
+	dev->ignoretext = fz_traceignoretext;
+
+	dev->drawimage = fz_tracedrawimage;
+	dev->drawshade = fz_tracedrawshade;
+
+	dev->popclip = fz_tracepopclip;
+
+	return dev;
+}
+