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/** \file
* \brief Canvas 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_canvas.h"
void iupCanvasCalcScrollIntPos(double min, double max, double page, double pos,
int imin, int imax, int *ipage, int *ipos)
{
double range = max-min;
int irange = imax-imin;
double ratio = ((double)irange)/range;
*ipage = (int)(page*ratio);
if (*ipage > irange) *ipage = irange;
if (*ipage < 1) *ipage = 1;
if (ipos)
{
*ipos = (int)((pos-min)*ratio) + imin;
if (*ipos < imin) *ipos = imin;
if (*ipos > (imax - *ipage)) *ipos = imax - *ipage;
}
}
void iupCanvasCalcScrollRealPos(double min, double max, double *pos,
int imin, int imax, int ipage, int *ipos)
{
double range = max-min;
int irange = imax-imin;
double ratio = ((double)irange)/range;
if (*ipos < imin) *ipos = imin;
if (*ipos > (imax - ipage)) *ipos = imax - ipage;
*pos = min + ((double)(*ipos-imin))/ratio;
}
char* iupCanvasGetPosXAttrib(Ihandle* ih)
{
char* str = iupStrGetMemory(20);
sprintf(str, "%f", ih->data->posx);
return str;
}
char* iupCanvasGetPosYAttrib(Ihandle* ih)
{
char* str = iupStrGetMemory(20);
sprintf(str, "%f", ih->data->posy);
return str;
}
static int iCanvasCreateMethod(Ihandle* ih, void** params)
{
if (params && params[0])
{
char* action = (char*)params[0];
iupAttribStoreStr(ih, "ACTION", action);
}
ih->data = iupALLOCCTRLDATA();
/* default EXPAND is YES */
ih->expand = IUP_EXPAND_BOTH;
return IUP_NOERROR;
}
static void iCanvasComputeNaturalSizeMethod(Ihandle* ih, int *w, int *h, int *expand)
{
int natural_w = 0, natural_h = 0;
(void)expand; /* unset if not a container */
/* canvas natural size is 1 character */
iupdrvFontGetCharSize(ih, &natural_w, &natural_h);
*w = natural_w;
*h = natural_h;
}
/******************************************************************************/
Ihandle* IupCanvas(const char* action)
{
void *params[2];
params[0] = (void*)action;
params[1] = NULL;
return IupCreatev("canvas", params);
}
Iclass* iupCanvasGetClass(void)
{
Iclass* ic = iupClassNew(NULL);
ic->name = "canvas";
ic->format = "A"; /* one optional callback name */
ic->nativetype = IUP_TYPECANVAS;
ic->childtype = IUP_CHILDNONE;
ic->is_interactive = 1;
/* Class functions */
ic->Create = iCanvasCreateMethod;
ic->ComputeNaturalSize = iCanvasComputeNaturalSizeMethod;
ic->LayoutUpdate = iupdrvBaseLayoutUpdateMethod;
ic->UnMap = iupdrvBaseUnMapMethod;
/* Callbacks */
iupClassRegisterCallback(ic, "DROPFILES_CB", "siii");
iupClassRegisterCallback(ic, "RESIZE_CB", "ii");
iupClassRegisterCallback(ic, "FOCUS_CB", "i");
iupClassRegisterCallback(ic, "WOM_CB", "i");
iupClassRegisterCallback(ic, "BUTTON_CB", "iiiis");
iupClassRegisterCallback(ic, "MOTION_CB", "iis");
iupClassRegisterCallback(ic, "KEYPRESS_CB", "ii");
iupClassRegisterCallback(ic, "ACTION", "ff");
iupClassRegisterCallback(ic, "SCROLL_CB", "iff");
iupClassRegisterCallback(ic, "WHEEL_CB", "fiis");
/* Common Callbacks */
iupBaseRegisterCommonCallbacks(ic);
/* Common */
iupBaseRegisterCommonAttrib(ic);
{
/* Change the default to YES */
IattribGetFunc _get;
IattribSetFunc _set;
iupClassRegisterGetAttribute(ic, "EXPAND", &_get, &_set, NULL, NULL, NULL);
iupClassRegisterAttribute(ic, "EXPAND", _get, _set, IUPAF_SAMEASSYSTEM, "YES", IUPAF_NOT_MAPPED|IUPAF_NO_INHERIT);
}
/* Visual */
iupBaseRegisterVisualAttrib(ic);
/* IupCanvas only */
iupClassRegisterAttribute(ic, "CURSOR", NULL, iupdrvBaseSetCursorAttrib, IUPAF_SAMEASSYSTEM, "ARROW", IUPAF_NO_INHERIT);
iupClassRegisterAttribute(ic, "XMIN", NULL, NULL, IUPAF_SAMEASSYSTEM, "0.0", IUPAF_NOT_MAPPED|IUPAF_NO_INHERIT);
iupClassRegisterAttribute(ic, "XMAX", NULL, NULL, IUPAF_SAMEASSYSTEM, "1.0", IUPAF_NOT_MAPPED|IUPAF_NO_INHERIT);
iupClassRegisterAttribute(ic, "YMIN", NULL, NULL, IUPAF_SAMEASSYSTEM, "0.0", IUPAF_NOT_MAPPED|IUPAF_NO_INHERIT);
iupClassRegisterAttribute(ic, "YMAX", NULL, NULL, IUPAF_SAMEASSYSTEM, "1.0", IUPAF_NOT_MAPPED|IUPAF_NO_INHERIT);
iupClassRegisterAttribute(ic, "LINEX", NULL, NULL, NULL, NULL, IUPAF_NOT_MAPPED|IUPAF_NO_INHERIT);
iupClassRegisterAttribute(ic, "LINEY", NULL, NULL, NULL, NULL, IUPAF_NOT_MAPPED|IUPAF_NO_INHERIT);
iupClassRegisterAttribute(ic, "BORDER", NULL, NULL, IUPAF_SAMEASSYSTEM, "YES", IUPAF_DEFAULT);
iupClassRegisterAttribute(ic, "SCROLLBAR", NULL, NULL, NULL, NULL, IUPAF_NO_INHERIT);
iupdrvCanvasInitClass(ic);
return ic;
}
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