New Cairo driver

1 files changed, 122 insertions, 0 deletions

diff --git a/src/cairo/cdcairopdf.c b/src/cairo/cdcairopdf.c
new file mode 100644
index 0000000..880a2e5
--- /dev/null
+++ b/src/cairo/cdcairopdf.c
@@ -0,0 +1,122 @@
+/** \file
+ * \brief Cairo PDF Driver
+ *
+ * See Copyright Notice in cd.h
+ */
+
+#include <stdlib.h>
+#include <stdio.h>
+
+#include "cd.h"
+#include "cdcairo.h"
+#include "cdcairoctx.h"
+
+#include <cairo-pdf.h>
+
+
+static void cdkillcanvas (cdCtxCanvas *ctxcanvas)
+{
+  cdcairoKillCanvas(ctxcanvas);
+}
+
+static void cdcreatecanvas(cdCanvas* canvas, void* data)
+{
+  cdCtxCanvas* ctxcanvas;
+  char* strdata = (char*)data;
+  char filename[10240] = "";
+  cairo_surface_t *surface;
+  int res = 300;
+  double w_pt;         /* Largura do papel (points) */
+  double h_pt;         /* Altura do papel (points) */
+  double scale;          /* Fator de conversao de coordenadas (pixel2points) */
+  int landscape = 0;         /* page orientation */
+
+  /* Starting parameters */
+  if (strdata == NULL) 
+    return;
+
+  strdata += cdGetFileName(strdata, filename);
+  if (filename[0] == 0)
+    return;
+
+  cdSetPaperSize(CD_A4, &w_pt, &h_pt);
+
+  while (*strdata != '\0')
+  {
+    while (*strdata != '\0' && *strdata != '-') 
+      strdata++;
+
+    if (*strdata != '\0')
+    {
+      float num;
+      strdata++;
+      switch (*strdata++)
+      {
+      case 'p':
+        {
+          int paper;
+          sscanf(strdata, "%d", &paper);
+          cdSetPaperSize(paper, &w_pt, &h_pt);
+          break;
+        }
+      case 'w':
+        sscanf(strdata, "%g", &num);
+        w_pt = CD_MM2PT*num;
+        break;
+      case 'h':
+        sscanf(strdata, "%g", &num);
+        h_pt = CD_MM2PT*num;
+        break;
+      case 'o':
+        landscape = 1;
+        break;
+      case 's':
+        sscanf(strdata, "%d", &res);
+        break;
+      }
+    }
+
+    while (*strdata != '\0' && *strdata != ' ') 
+      strdata++;
+  }
+
+  if (landscape)
+    _cdSwapDouble(w_pt, h_pt);
+
+  scale = 72.0/res;
+
+  canvas->w = (int)(w_pt/scale + 0.5);   /* Converte p/ unidades do usuario */
+  canvas->h = (int)(h_pt/scale + 0.5); /* Converte p/ unidades do usuario */
+  canvas->w_mm = w_pt/CD_MM2PT;   /* Converte p/ milimetros */
+  canvas->h_mm = h_pt/CD_MM2PT; /* Converte p/ milimetros */
+  canvas->bpp = 24;
+  canvas->xres = canvas->w / canvas->w_mm;
+  canvas->yres = canvas->h / canvas->h_mm;
+
+	surface = cairo_pdf_surface_create(filename, w_pt, h_pt);
+
+  /* Starting Cairo driver */
+  ctxcanvas = cdcairoCreateCanvas(canvas, cairo_create(surface));
+  cairo_surface_destroy(surface);
+}
+
+static void cdinittable(cdCanvas* canvas)
+{
+  cdcairoInitTable(canvas);
+  canvas->cxKillCanvas = cdkillcanvas;
+}
+
+static cdContext cdCairoPDFContext =
+{
+  CD_CAP_ALL & ~(CD_CAP_PLAY | CD_CAP_YAXIS | CD_CAP_REGION | CD_CAP_FPRIMTIVES),
+  0,
+  cdcreatecanvas,  
+  cdinittable,
+  NULL,                 
+  NULL
+};
+
+cdContext* cdContextCairoPDF(void)
+{
+  return &cdCairoPDFContext;
+}