cmSvgWriter.h/c,Makefile.am : Initial commit.

Makefile.am

@@ -18,8 +18,11 @@ cmSRC += src/libcm/cmData.c src/libcm/cmLib.c src/libcm/cmText.c src/libcm/cmTex
 cmHDR += src/libcm/cmMath.h src/libcm/cmGnuPlot.h src/libcm/cmKeyboard.h  src/libcm/cmStrStream.h
 cmSRC += src/libcm/cmMath.c src/libcm/cmGnuPlot.c src/libcm/cmKeyboard.c  src/libcm/cmStrStream.c
 
-cmHDR += src/libcm/cmLinkedHeap.h src/libcm/cmMallocDebug.h src/libcm/cmLex.h src/libcm/cmJson.h src/libcm/cmXml.h src/libcm/cmPrefs.h src/libcm/cmStack.h src/libcm/cmArray.h
-cmSRC += src/libcm/cmLinkedHeap.c src/libcm/cmMallocDebug.c src/libcm/cmLex.c src/libcm/cmJson.c src/libcm/cmXml.c src/libcm/cmPrefs.c src/libcm/cmStack.c src/libcm/cmArray.c
+cmHDR += src/libcm/cmLinkedHeap.h src/libcm/cmMallocDebug.h src/libcm/cmLex.h src/libcm/cmJson.h src/libcm/cmXml.h 
+cmSRC += src/libcm/cmLinkedHeap.c src/libcm/cmMallocDebug.c src/libcm/cmLex.c src/libcm/cmJson.c src/libcm/cmXml.c 
+
+cmHDR += src/libcm/cmPrefs.h src/libcm/cmStack.h src/libcm/cmArray.h src/libcm/cmSvgWriter.h
+cmSRC += src/libcm/cmPrefs.c src/libcm/cmStack.c src/libcm/cmArray.c src/libcm/cmSvgWriter.c
 
 cmHDR += src/libcm/cmUdpPort.h src/libcm/cmUdpNet.h src/libcm/cmVirtNet.h
 cmSRC += src/libcm/cmUdpPort.c src/libcm/cmUdpNet.c src/libcm/cmVirtNet.c

cmSvgWriter.c

@@ -0,0 +1,234 @@
+#include "cmPrefix.h"
+#include "cmGlobal.h"
+#include "cmFloatTypes.h"
+#include "cmRpt.h"
+#include "cmErr.h"
+#include "cmCtx.h"
+#include "cmMem.h"
+#include "cmMallocDebug.h"
+#include "cmLinkedHeap.h"
+#include "cmTime.h"
+#include "cmText.h"
+#include "cmFile.h"
+#include "cmSvgWriter.h"
+
+enum
+{
+  kRectSvgId,
+  kLineSvgId,
+  kTextSvgId
+};
+
+typedef struct cmSvgEle_str
+{
+  unsigned  id;
+  double    x0;
+  double    y0;
+  double    x1;
+  double    y1;
+  cmChar_t* text;
+  cmChar_t* cssClass;
+  struct cmSvgEle_str* link;
+} cmSvgEle_t;
+
+typedef struct cmSvg_str
+{
+  cmErr_t     err;
+  cmLHeapH_t  lhH;
+  cmSvgEle_t* elist;
+  cmSvgEle_t* eol; 
+} cmSvg_t;
+
+cmSvgH_t cmSvgNullHandle = cmSTATIC_NULL_HANDLE;
+
+cmSvg_t* _cmSvgHandleToPtr( cmSvgH_t h )
+{
+  cmSvg_t* p = (cmSvg_t*)h.h;
+  assert(p != NULL );
+  return p;
+}
+
+cmSvgRC_t _cmSvgInsertEle( cmSvg_t* p, unsigned id, double x0, double y0, double x1, double y1, const cmChar_t* text, const cmChar_t* class )
+{
+  cmSvgEle_t* e = cmLhAllocZ(p->lhH,cmSvgEle_t,1);
+
+  e->id       = id;
+  e->x0       = x0;
+  e->y0       = y0;
+  e->x1       = x1;
+  e->y1       = y1;
+  e->text     = text==NULL ? "" : cmLhAllocStr(p->lhH,text);
+  e->cssClass = cmLhAllocStr(p->lhH,class);
+  
+  if( p->eol == NULL )
+    p->elist = p->eol = e;
+  else
+    p->eol->link = e;
+
+  p->eol = e;
+
+  return kOkSvgRC;
+}
+
+cmSvgRC_t _cmSvgWriterFree( cmSvg_t* p )
+{
+  cmLHeapDestroy(&p->lhH);
+  cmMemFree(p);
+  return kOkSvgRC;
+}
+
+cmSvgRC_t cmSvgWriterAlloc( cmCtx_t* ctx, cmSvgH_t* hp )
+{
+  cmSvgRC_t rc;
+  if((rc = cmSvgWriterFree(hp)) != kOkSvgRC )
+    return rc;
+
+  cmSvg_t* p = cmMemAllocZ(cmSvg_t,1);
+
+  cmErrSetup(&p->err,&ctx->rpt,"SVG Writer");
+
+  // create a local linked heap
+  if( cmLHeapIsValid( p->lhH = cmLHeapCreate(8196,ctx)) == false )
+  {
+    rc = cmErrMsg(&p->err,kLHeapFailSvgRC,"Lheap create failed.");
+    goto errLabel;
+  }
+  
+  hp->h = p;
+
+ errLabel:
+  if( rc != kOkSvgRC )
+    _cmSvgWriterFree(p);
+
+  return rc;
+}
+
+cmSvgRC_t cmSvgWriterFree( cmSvgH_t* hp )
+{
+  cmSvgRC_t rc = kOkSvgRC;
+  
+  if( hp==NULL || cmSvgWriterIsValid(*hp)==false )
+    return kOkSvgRC;
+
+  cmSvg_t* p = _cmSvgHandleToPtr(*hp);
+  
+  if((rc = _cmSvgWriterFree(p)) != kOkSvgRC )
+    return rc;
+
+  hp->h = NULL;
+  
+  return rc;
+}
+
+bool      cmSvgWriterIsValid( cmSvgH_t h )
+{ return h.h != NULL; }
+
+cmSvgRC_t cmSvgWriterRect( cmSvgH_t h, double  x, double y,  double ww,  double hh,  const cmChar_t* cssClassLabel )
+{
+  cmSvg_t* p = _cmSvgHandleToPtr(h);
+  return  _cmSvgInsertEle( p, kRectSvgId, x, y, x+ww, y+hh, NULL, cssClassLabel==NULL?"rectclass":cssClassLabel );
+}
+
+cmSvgRC_t cmSvgWriterLine( cmSvgH_t h, double x0, double y0, double x1, double y1, const cmChar_t* cssClassLabel )
+{
+  cmSvg_t* p = _cmSvgHandleToPtr(h);
+  return  _cmSvgInsertEle( p, kLineSvgId, x0, y0, x1, y1, NULL, cssClassLabel==NULL?"lineclass":cssClassLabel );
+}
+
+cmSvgRC_t cmSvgWriterText( cmSvgH_t h, double  x, double y,  const cmChar_t* text,     const cmChar_t* cssClassLabel )
+{
+  cmSvg_t* p = _cmSvgHandleToPtr(h);
+  return  _cmSvgInsertEle( p, kTextSvgId, x, y, 0, 0, text==NULL?"":text, cssClassLabel==NULL?"textclass":cssClassLabel );
+}
+
+void _cmSvgSize( cmSvg_t* p, double* widthRef, double* heightRef )
+{
+  *widthRef  = 0;
+  *heightRef = 0;
+
+  if( p->elist == NULL )
+    return; 
+  
+  cmSvgEle_t* e     = p->elist;
+  double      min_x = cmMin(e->x0,e->x1);
+  double      max_x = cmMax(e->x0,e->x1);
+  double      min_y = cmMin(e->y0,e->y1);
+  double      max_y = cmMax(e->y0,e->y1);
+
+  for(e=e->link; e!=NULL; e=e->link)
+  {
+    min_x = cmMin(cmMin(min_x,e->x0),e->x1);
+    max_x = cmMax(cmMax(max_x,e->x0),e->x1);
+    min_y = cmMin(cmMin(min_y,e->y0),e->y1);
+    max_y = cmMax(cmMax(max_y,e->y0),e->y1);
+  }
+
+  *widthRef  = max_x - min_x;
+  *heightRef = max_y - min_y;
+}
+
+
+cmSvgRC_t cmSvgWriterWrite( cmSvgH_t h,  const cmChar_t* cssFn, const cmChar_t* outFn )
+{
+  cmSvgRC_t   rc        = kOkSvgRC;
+  cmSvg_t*    p         = _cmSvgHandleToPtr(h);
+  double      svgWidth  = 0;
+  double      svgHeight = 0;
+  cmSvgEle_t* e         = p->elist;
+  cmFileH_t   fH        = cmFileNullHandle;
+  
+  _cmSvgSize(p, &svgWidth, &svgHeight );
+  
+  if( cmFileOpen(&fH,outFn,kWriteFileFl,p->err.rpt) != kOkFileRC )
+    return cmErrMsg(&p->err,kFileFailSvgRC,"SVG file create failed for '%s'.",cmStringNullGuard(outFn));
+
+  if( cmFilePrintf(fH,"<!DOCTYPE html>\n<html>\n<head><link rel=\"stylesheet\" type=\"text/css\" href=\"%s\"></head><body>\n<svg width=\"%f\" height=\"%f\">\n",svgWidth,svgHeight,cssFn) != kOkFileRC )
+  {
+    rc = cmErrMsg(&p->err,kFileFailSvgRC,"File prefix write failed.");
+    goto errLabel;
+  }
+
+  for(; e!=NULL; e=e->link)
+  {
+    switch( e->id )
+    {
+      case kRectSvgId:
+        if( cmFilePrintf(fH,"<rect x=\"%f\" y=\"%f\" width=\"%f\" height=\"%f\" class=\"%s\"/>\n",e->x0,e->y0,e->x1-e->x0,e->y1-e->y0,e->cssClass) != kOkFileRC )
+          rc = kFileFailSvgRC;
+        break;
+        
+      case kLineSvgId:
+        if( cmFilePrintf(fH,"<line x1=\"%f\" y1=\"%f\" x2=\"%f\" y2=\"%f\" class=\"%s\"/>\n",e->x0,e->y0,e->x1,e->y1,e->cssClass) != kOkFileRC )
+          rc = kFileFailSvgRC;
+        break;
+        
+      case kTextSvgId:
+        if( cmFilePrintf(fH,"<text x=\"%f\" y=\"%f\" class=\"%s\">%s</text>\n",e->x0,e->y0,e->cssClass,e->text) != kOkFileRC )
+          rc = kFileFailSvgRC;        
+        break;
+        
+      default:
+        { assert(0); }
+      
+    }
+
+    if( rc != kOkSvgRC )
+    {
+      rc = cmErrMsg(&p->err,kFileFailSvgRC,"Element write failed.");
+      break;
+    }
+  }
+  
+  if( cmFilePrint(fH,"</svg>\n</body>\n</html>\n") != kOkFileRC )
+  {
+    rc = cmErrMsg(&p->err,kFileFailSvgRC,"File suffix write failed.");
+    goto errLabel;
+  }
+
+
+ errLabel:
+  cmFileClose(&fH);
+
+  return rc;
+}
+

cmSvgWriter.h

@@ -0,0 +1,35 @@
+#ifndef cmSvgWriter_h
+#define cmSvgWriter_h
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+enum
+{
+  kOkSvgRC = cmOkRC,
+  kFileFailSvgRC,
+  kLHeapFailSvgRC
+};
+
+  typedef cmRC_t     cmSvgRC_t;
+  typedef cmHandle_t cmSvgH_t;
+
+  extern cmSvgH_t cmSvgNullHandle;
+  
+  cmSvgRC_t cmSvgWriterAlloc( cmCtx_t* ctx, cmSvgH_t* hp );
+  cmSvgRC_t cmSvgWriterFree(    cmSvgH_t* hp );
+  bool      cmSvgWriterIsValid( cmSvgH_t h );
+  
+  cmSvgRC_t cmSvgWriterRect( cmSvgH_t h, double  x, double y,  double ww,  double hh,  const cmChar_t* cssClassLabel );
+  cmSvgRC_t cmSvgWriterLine( cmSvgH_t h, double x0, double y0, double x1, double y1, const cmChar_t* cssClassLabel );
+  cmSvgRC_t cmSvgWriterText( cmSvgH_t h, double  x, double y,  const cmChar_t* text, const cmChar_t* cssClassLabel );
+
+  cmSvgRC_t cmSvgWriterWrite( cmSvgH_t h, const cmChar_t* cssFn, const cmChar_t* outFn );
+  
+#ifdef __cplusplus
+}
+#endif
+
+
+#endif