1 files changed, 183 insertions, 0 deletions
diff --git a/iup/src/iup_label.c b/iup/src/iup_label.c
new file mode 100755
index 0000000..33d96af
--- /dev/null
+++ b/iup/src/iup_label.c
@@ -0,0 +1,183 @@
+/** \file
+ * \brief Label Control.
+ *
+ * See Copyright Notice in "iup.h"
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+
+#include "iup.h"
+#include "iupcbs.h"
+
+#include "iup_object.h"
+#include "iup_attrib.h"
+#include "iup_str.h"
+#include "iup_drv.h"
+#include "iup_drvfont.h"
+#include "iup_stdcontrols.h"
+#include "iup_layout.h"
+#include "iup_label.h"
+#include "iup_image.h"
+
+
+static int iLabelSetSeparatorAttrib(Ihandle* ih, const char* value)
+{
+  /* valid only before map */
+  if (ih->handle)
+    return 0;
+
+  if (value)
+  {
+    if (iupStrEqualNoCase(value, "HORIZONTAL"))
+      ih->expand = IUP_EXPAND_WIDTH;
+    else if (iupStrEqualNoCase(value, "VERTICAL"))
+      ih->expand = IUP_EXPAND_HEIGHT;
+    else
+      return 0;
+  }
+
+  return 1;
+}
+
+static char* iLabelGetSeparatorAttrib(Ihandle* ih)
+{
+  if (ih->handle)
+  {
+    if (ih->data->type == IUP_LABEL_SEP_HORIZ)
+      return "HORIZONTAL";
+    else if (ih->data->type == IUP_LABEL_SEP_VERT)
+      return "VERTICAL";
+  }
+  return NULL;
+}
+
+char* iupLabelGetPaddingAttrib(Ihandle* ih)
+{
+  if (ih->data->type != IUP_LABEL_SEP_HORIZ && ih->data->type != IUP_LABEL_SEP_VERT)
+  {
+    char *str = iupStrGetMemory(50);
+    sprintf(str, "%dx%d", ih->data->horiz_padding, ih->data->vert_padding);
+    return str;
+  }
+  else
+    return NULL;
+}
+
+
+/**************************************************************************************/
+
+
+static int iLabelCreateMethod(Ihandle* ih, void** params)
+{
+  if (params && params[0])
+    iupAttribStoreStr(ih, "TITLE", (char*)(params[0]));
+  
+  ih->data = iupALLOCCTRLDATA();
+
+  /* used only by the Windows driver */
+  ih->data->vert_alignment = IUP_ALIGN_ACENTER;
+  return IUP_NOERROR;
+}
+
+static void iLabelComputeNaturalSizeMethod(Ihandle* ih, int *w, int *h, int *expand)
+{
+  int natural_w = 0, 
+      natural_h = 0, 
+      type = ih->data->type;
+  (void)expand; /* unset if not a container */
+
+  if (!ih->handle)
+  {
+    /* if not mapped must initialize the internal values */
+    char* value = iupAttribGet(ih, "SEPARATOR");
+    if (value)
+    {
+      if (iupStrEqualNoCase(value, "HORIZONTAL"))
+        type = IUP_LABEL_SEP_HORIZ;
+      else /* "VERTICAL" */
+        type = IUP_LABEL_SEP_VERT;
+    }
+    else
+    {
+      value = iupAttribGet(ih, "IMAGE");
+      if (value)
+        type = IUP_LABEL_IMAGE;
+      else
+        type = IUP_LABEL_TEXT;
+    }
+  }
+
+  if (type == IUP_LABEL_SEP_HORIZ)
+    natural_h = 2;
+  else if (type == IUP_LABEL_SEP_VERT)
+    natural_w = 2;
+  else if (type == IUP_LABEL_IMAGE)
+  {
+    iupImageGetInfo(iupAttribGet(ih, "IMAGE"), &natural_w, &natural_h, NULL);
+
+    natural_w += 2*ih->data->horiz_padding;
+    natural_h += 2*ih->data->vert_padding;
+  }
+  else /* IUP_LABEL_TEXT */
+  {
+    /* must use IupGetAttribute to check from the native implementation */
+    char* title = IupGetAttribute(ih, "TITLE");
+    char* str = iupStrProcessMnemonic(title, NULL, 0);   /* remove & */
+    iupdrvFontGetMultiLineStringSize(ih, str, &natural_w, &natural_h);
+    if (str && str!=title) free(str);
+
+    natural_w += 2*ih->data->horiz_padding;
+    natural_h += 2*ih->data->vert_padding;
+  }
+
+  *w = natural_w;
+  *h = natural_h;
+}
+
+
+/******************************************************************************/
+
+
+Ihandle* IupLabel(const char* title)
+{
+  void *params[2];
+  params[0] = (void*)title;
+  params[1] = NULL;
+  return IupCreatev("label", params);
+}
+
+Iclass* iupLabelGetClass(void)
+{
+  Iclass* ic = iupClassNew(NULL);
+
+  ic->name = "label";
+  ic->format = "S"; /* one optional string */
+  ic->nativetype = IUP_TYPECONTROL;
+  ic->childtype = IUP_CHILDNONE;
+  ic->is_interactive = 0;
+
+  /* Class functions */
+  ic->Create = iLabelCreateMethod;
+  ic->ComputeNaturalSize = iLabelComputeNaturalSizeMethod;
+
+  ic->LayoutUpdate = iupdrvBaseLayoutUpdateMethod;
+  ic->UnMap = iupdrvBaseUnMapMethod;
+
+  /* Common Callbacks */
+  iupClassRegisterCallback(ic, "MAP_CB", "");
+  iupClassRegisterCallback(ic, "UNMAP_CB", "");
+
+  /* Common */
+  iupBaseRegisterCommonAttrib(ic);
+
+  /* Visual */
+  iupBaseRegisterVisualAttrib(ic);
+
+  /* IupLabel only */
+  iupClassRegisterAttribute(ic, "SEPARATOR", iLabelGetSeparatorAttrib, iLabelSetSeparatorAttrib, NULL, NULL, IUPAF_NOT_MAPPED|IUPAF_NO_INHERIT);
+
+  iupdrvLabelInitClass(ic);
+
+  return ic;
+}