iup-stack/iup/srcglcontrols/iup_glval.c

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2023-02-20 16:44:45 +00:00
/** \file
* \brief GLVal control
*
* See Copyright Notice in "iup.h"
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <math.h>
#include "iup.h"
#include "iupcbs.h"
#include "iupglcontrols.h"
#include "iup_object.h"
#include "iup_attrib.h"
#include "iup_str.h"
#include "iup_register.h"
#include "iup_glcontrols.h"
#include "iup_glfont.h"
#include "iup_gldraw.h"
#include "iup_glimage.h"
#include "iup_glsubcanvas.h"
typedef struct _iGLVal
{
double value; /* min<=value<max */
double vmin;
double vmax;
} iGLVal;
static void iGLValGetHandlerSize(Ihandle* ih, int is_horizontal, int *width, int *height)
{
char *image = iupAttribGet(ih, "IMAGE");
if (image)
iupGLImageGetInfo(image, width, height, NULL);
else
{
int handler_size = iupAttribGetInt(ih, "HANDLERSIZE");
if (is_horizontal)
{
if (handler_size == 0)
handler_size = ih->currentheight / 2;
*width = handler_size;
*height = ih->currentheight;
}
else
{
if (handler_size == 0)
handler_size = ih->currentwidth / 2;
*width = ih->currentwidth;
*height = handler_size;
}
}
}
static int iGLValACTION_CB(Ihandle* ih)
{
iGLVal* val = (iGLVal*)iupAttribGet(ih, "_IUP_GLVAL");
float bwidth = iupAttribGetFloat(ih, "BORDERWIDTH");
char* bordercolor = iupAttribGetStr(ih, "BORDERCOLOR");
int active = iupAttribGetInt(ih, "ACTIVE");
char* bgcolor = iupAttribGetStr(ih, "BGCOLOR");
int slider_size = iupAttribGetInt(ih, "SLIDERSIZE");
int border_width = (int)ceil(bwidth);
int is_horizontal = iupStrEqualNoCase(iupAttribGetStr(ih, "ORIENTATION"), "HORIZONTAL");
int handler_width, handler_height;
char *image = iupAttribGet(ih, "IMAGE");
char* bgimage = iupAttribGet(ih, "BACKIMAGE");
double percent = (val->value - val->vmin) / (val->vmax - val->vmin);
int x1, y1, x2, y2;
iGLValGetHandlerSize(ih, is_horizontal, &handler_width, &handler_height);
if (is_horizontal)
{
x1 = handler_width / 2;
x2 = ih->currentwidth - 1 - handler_width / 2;
y1 = (ih->currentheight - slider_size) / 2;
y2 = y1 + slider_size;
}
else
{
y1 = handler_height / 2;
y2 = ih->currentheight - 1 - handler_height / 2;
x1 = (ih->currentwidth - slider_size) / 2;
x2 = x1 + slider_size;
}
/* draw slider background */
if (bgimage)
iupGLDrawIconImageZoom(ih, border_width, border_width,
border_width, border_width,
"BACKIMAGE", bgimage, active);
else
{
iupGLDrawBox(ih, x1 + border_width, x2 - border_width,
y1 + border_width, y2 - border_width,
bgcolor, 1); /* always active */
/* draw slider border - can be disabled setting bwidth=0 */
iupGLDrawRect(ih, x1, x2, y1, y2, bwidth, bordercolor, active, 0);
}
if (is_horizontal)
{
int xmid = x1 + iupRound((x2 - x1) * percent);
x1 = xmid - handler_width / 2; if (x1 < 0) x1 = 0;
x2 = xmid + handler_width / 2; if (x2 > ih->currentwidth - 1) x2 = ih->currentwidth - 1;
y1 = 0;
y2 = ih->currentheight - 1;
}
else
{
int ymid = y1 + iupRound((y2 - y1) * (1.0 - percent));
y1 = ymid - handler_height / 2; if (y1 < 0) y1 = 0;
y2 = ymid + handler_height / 2; if (y2 > ih->currentheight - 1) y2 = ih->currentheight - 1;
x1 = 0;
x2 = ih->currentwidth - 1;
}
if (image)
{
int x, y, width, height;
iupGLImageGetInfo(image, &width, &height, NULL);
/* always center the image */
x = (x2 - x1 + 1 - width) / 2;
y = (y2 - y1 + 1 - height) / 2;
if (x1 + x < 0) x = 0;
if (y1 + y < 0) y = 0;
if (x1 + x + width > ih->currentwidth - 1) x = ih->currentwidth - 1 - width - x1;
if (y1 + y + height > ih->currentheight - 1) y = ih->currentheight - 1 - height - y1;
iupGLDrawIconImage(ih, x1 + x, y1 + y, "IMAGE", image, active);
}
else
{
int pressed = iupAttribGetInt(ih, "PRESSED");
int highlight = iupAttribGetInt(ih, "HIGHLIGHT");
char* fgcolor = iupAttribGetStr(ih, "FGCOLOR");
if (pressed)
{
char* presscolor = iupAttribGetStr(ih, "PSCOLOR");
if (presscolor)
fgcolor = presscolor;
}
else if (highlight)
{
char* hlcolor = iupAttribGetStr(ih, "HLCOLOR");
if (hlcolor)
fgcolor = hlcolor;
}
/* draw handler foreground */
iupGLDrawBox(ih, x1 + border_width, x2 - border_width, y1 + border_width, y2 - border_width, fgcolor, active);
/* draw handler border - can still be disabled setting bwidth=0
after the background because of the round rect */
iupGLDrawRect(ih, x1, x2, y1, y2, bwidth, bordercolor, active, 1);
}
return IUP_DEFAULT;
}
static void iGLValCropValue(iGLVal* val)
{
if (val->value>val->vmax)
val->value = val->vmax;
else if (val->value<val->vmin)
val->value = val->vmin;
}
static int iGLValGetSliderInfo(Ihandle* ih, int dx, int dy, int is_horizontal, int *p, int *p1, int *p2, int *handler_op_size)
{
int handler_width, handler_height;
iGLValGetHandlerSize(ih, is_horizontal, &handler_width, &handler_height);
if (is_horizontal)
{
*p1 = handler_width / 2;
*p2 = ih->currentwidth - 1 - handler_width / 2;
*p = dx;
if (handler_op_size) *handler_op_size = handler_height;
return handler_width;
}
else
{
*p1 = handler_height / 2;
*p2 = ih->currentheight - 1 - handler_height / 2;
*p = dy;
if (handler_op_size) *handler_op_size = handler_width;
return handler_height;
}
}
static void iGLValGetSliderOpositeInfo(Ihandle* ih, int dx, int dy, int is_horizontal, int *q, int *op_size)
{
if (is_horizontal)
{
*op_size = ih->currentheight;
*q = dy;
}
else
{
*op_size = ih->currentwidth;
*q = dx;
}
}
static int iGLValMoveHandler(Ihandle* ih, int dx, int dy)
{
iGLVal* val = (iGLVal*)iupAttribGet(ih, "_IUP_GLVAL");
int is_horizontal = iupStrEqualNoCase(iupAttribGetStr(ih, "ORIENTATION"), "HORIZONTAL");
double percent, old_percent, delta;
int dp, p1, p2;
iGLValGetSliderInfo(ih, dx, dy, is_horizontal, &dp, &p1, &p2, NULL);
if (dp == 0)
return 0;
old_percent = percent = (val->value - val->vmin) / (val->vmax - val->vmin);
delta = (double)dp / (double)(p2 - p1);
if (!is_horizontal) delta *= -1.0;
percent += delta;
if (percent < 0.0) percent = 0;
if (percent > 1.0) percent = 1.0;
if (old_percent == percent)
return 0;
val->value = percent * (val->vmax - val->vmin) + val->vmin;
return 1;
}
static int iGLValIsInsideHandler(Ihandle* ih, int x, int y)
{
iGLVal* val = (iGLVal*)iupAttribGet(ih, "_IUP_GLVAL");
int is_horizontal = iupStrEqualNoCase(iupAttribGetStr(ih, "ORIENTATION"), "HORIZONTAL");
double percent;
int p, p1, p2, pmid, handler_op_size;
int handler_size = iGLValGetSliderInfo(ih, x, y, is_horizontal, &p, &p1, &p2, &handler_op_size);
percent = (val->value - val->vmin) / (val->vmax - val->vmin);
if (!is_horizontal)
percent = 1.0 - percent;
pmid = p1 + iupRound((p2 - p1) * percent);
p1 = pmid - handler_size / 2;
p2 = pmid + handler_size / 2;
if (p >= p1 && p <= p2)
{
int q, q1, q2, qmid, op_size;
iGLValGetSliderOpositeInfo(ih, x, y, is_horizontal, &q, &op_size);
qmid = op_size / 2;
q1 = qmid - handler_op_size / 2;
q2 = qmid + handler_op_size / 2;
if (q >= q1 && q <= q2)
return 1;
else
return 0;
}
else
return 0;
}
static int iGLValBUTTON_CB(Ihandle* ih, int button, int pressed, int x, int y, char* status)
{
if (button == IUP_BUTTON1)
{
if (pressed)
{
if (!iGLValIsInsideHandler(ih, x, y))
iupAttribSet(ih, "PRESSED", NULL);
else
{
iupAttribSetInt(ih, "_IUP_GLVAL_START_X", x);
iupAttribSetInt(ih, "_IUP_GLVAL_START_Y", y);
}
}
else
{
if (iupAttribGet(ih, "_IUP_GLVAL_DRAG"))
{
IFni cb = (IFni)IupGetCallback(ih, "VALUECHANGING_CB");
if (cb) cb(ih, 0);
iupAttribSet(ih, "_IUP_GLVAL_DRAG", NULL);
}
}
iupGLSubCanvasRedraw(ih);
}
(void)status;
return IUP_DEFAULT;
}
static int iGLValMOTION_CB(Ihandle* ih, int x, int y, char* status)
{
int redraw = 0;
int pressed = iupAttribGetInt(ih, "PRESSED");
/* special highlight processing for handler area */
if (iGLValIsInsideHandler(ih, x, y))
{
if (!iupAttribGet(ih, "HIGHLIGHT"))
{
redraw = 1;
iupAttribSet(ih, "HIGHLIGHT", "1");
}
}
else
{
if (iupAttribGet(ih, "HIGHLIGHT"))
{
redraw = 1;
iupAttribSet(ih, "HIGHLIGHT", NULL);
}
}
if (pressed)
{
int start_x = iupAttribGetInt(ih, "_IUP_GLVAL_START_X");
int start_y = iupAttribGetInt(ih, "_IUP_GLVAL_START_Y");
if (iGLValMoveHandler(ih, x - start_x, y - start_y))
{
iupGLSubCanvasRedraw(ih);
redraw = 0;
if (!iupAttribGet(ih, "_IUP_GLVAL_DRAG"))
{
IFni cb = (IFni)IupGetCallback(ih, "VALUECHANGING_CB");
if (cb) cb(ih, 1);
}
iupBaseCallValueChangedCb(ih);
iupAttribSet(ih, "_IUP_GLVAL_DRAG", "1");
}
iupAttribSetInt(ih, "_IUP_GLVAL_START_X", x);
iupAttribSetInt(ih, "_IUP_GLVAL_START_Y", y);
}
if (redraw)
iupGLSubCanvasRedraw(ih);
(void)status;
return IUP_DEFAULT;
}
static int iGLValENTERWINDOW_CB(Ihandle* ih, int x, int y)
{
/* special highlight processing for handler area */
if (iGLValIsInsideHandler(ih, x, y))
iupAttribSet(ih, "HIGHLIGHT", "1");
else
iupAttribSet(ih, "HIGHLIGHT", NULL);
return iupGLSubCanvasRedraw(ih);
}
static int iGLValSetValueAttrib(Ihandle* ih, const char* value)
{
iGLVal* val = (iGLVal*)iupAttribGet(ih, "_IUP_GLVAL");
if (iupStrToDouble(value, &(val->value)))
iGLValCropValue(val);
return 0; /* do not store value in hash table */
}
static char* iGLValGetValueAttrib(Ihandle* ih)
{
iGLVal* val = (iGLVal*)iupAttribGet(ih, "_IUP_GLVAL");
return iupStrReturnDouble(val->value);
}
static int iGLValSetMinAttrib(Ihandle* ih, const char* value)
{
iGLVal* val = (iGLVal*)iupAttribGet(ih, "_IUP_GLVAL");
if (iupStrToDouble(value, &(val->vmin)))
iGLValCropValue(val);
return 0; /* do not store value in hash table */
}
static char* iGLValGetMinAttrib(Ihandle* ih)
{
iGLVal* val = (iGLVal*)iupAttribGet(ih, "_IUP_GLVAL");
return iupStrReturnDouble(val->vmin);
}
static int iGLValSetMaxAttrib(Ihandle* ih, const char* value)
{
iGLVal* val = (iGLVal*)iupAttribGet(ih, "_IUP_GLVAL");
if (iupStrToDouble(value, &(val->vmax)))
iGLValCropValue(val);
return 0; /* do not store value in hash table */
}
static char* iGLValGetMaxAttrib(Ihandle* ih)
{
iGLVal* val = (iGLVal*)iupAttribGet(ih, "_IUP_GLVAL");
return iupStrReturnDouble(val->vmax);
}
static void iGLValComputeNaturalSizeMethod(Ihandle* ih, int *w, int *h, int *children_expand)
{
int natural_w = 0,
natural_h = 0;
int fit2backimage = iupAttribGetBoolean(ih, "FITTOBACKIMAGE");
char* bgimage = iupAttribGet(ih, "BACKIMAGE");
if (fit2backimage && bgimage)
{
iupAttribSet(ih, "BORDERWIDTH", "0");
iupGLImageGetInfo(bgimage, &natural_w, &natural_h, NULL);
}
else
{
int charwidth, charheight;
int is_horizontal = iupStrEqualNoCase(iupAttribGetStr(ih, "ORIENTATION"), "HORIZONTAL");
iupGLFontGetCharSize(ih, &charwidth, &charheight);
if (is_horizontal)
{
natural_h = charheight;
if (ih->userwidth <= 0)
natural_w = 15 * charwidth;
}
else
{
natural_w = charheight;
if (ih->userheight <= 0)
natural_h = 15 * charwidth;
}
}
*w = natural_w;
*h = natural_h;
(void)children_expand; /* unset if not a container */
}
static int iGLValCreateMethod(Ihandle* ih, void **params)
{
iGLVal* val = (iGLVal*)malloc(sizeof(iGLVal));
iupAttribSet(ih, "_IUP_GLVAL", (char*)val);
memset(val, 0, sizeof(iGLVal));
/* default values */
val->vmax = 1;
IupSetCallback(ih, "GL_ACTION", (Icallback)iGLValACTION_CB);
IupSetCallback(ih, "GL_BUTTON_CB", (Icallback)iGLValBUTTON_CB);
IupSetCallback(ih, "GL_MOTION_CB", (Icallback)iGLValMOTION_CB);
IupSetCallback(ih, "GL_LEAVEWINDOW_CB", iupGLSubCanvasRedraw);
IupSetCallback(ih, "GL_ENTERWINDOW_CB", (Icallback)iGLValENTERWINDOW_CB);
(void)params;
return IUP_NOERROR;
}
static void iGLValDestroyMethod(Ihandle* ih)
{
iGLVal* val = (iGLVal*)iupAttribGet(ih, "_IUP_GLVAL");
free(val);
}
Iclass* iupGLValNewClass(void)
{
Iclass* ic = iupClassNew(iupRegisterFindClass("glsubcanvas"));
ic->name = "glval";
ic->cons = "GLVal";
ic->format = NULL; /* no parameters */
ic->nativetype = IUP_TYPEVOID;
ic->childtype = IUP_CHILDNONE;
ic->is_interactive = 0;
/* Class functions */
ic->New = iupGLValNewClass;
ic->Create = iGLValCreateMethod;
ic->Destroy = iGLValDestroyMethod;
ic->ComputeNaturalSize = iGLValComputeNaturalSizeMethod;
/* Callbacks */
iupClassRegisterCallback(ic, "VALUECHANGED_CB", "");
iupClassRegisterCallback(ic, "VALUECHANGING_CB", "i");
/* IupGLVal only */
iupClassRegisterAttribute(ic, "MIN", iGLValGetMinAttrib, iGLValSetMinAttrib, IUPAF_SAMEASSYSTEM, "0", IUPAF_NOT_MAPPED|IUPAF_NO_INHERIT);
iupClassRegisterAttribute(ic, "MAX", iGLValGetMaxAttrib, iGLValSetMaxAttrib, IUPAF_SAMEASSYSTEM, "1", IUPAF_NOT_MAPPED|IUPAF_NO_INHERIT);
iupClassRegisterAttribute(ic, "VALUE", iGLValGetValueAttrib, iGLValSetValueAttrib, NULL, NULL, IUPAF_NOT_MAPPED|IUPAF_NO_INHERIT);
iupClassRegisterAttribute(ic, "ORIENTATION", NULL, NULL, IUPAF_SAMEASSYSTEM, "HORIZONTAL", IUPAF_NO_INHERIT);
iupClassRegisterAttribute(ic, "SLIDERSIZE", NULL, NULL, IUPAF_SAMEASSYSTEM, "5", IUPAF_NO_INHERIT);
iupClassRegisterAttribute(ic, "FGCOLOR", NULL, NULL, IUPAF_SAMEASSYSTEM, "200 225 245", IUPAF_DEFAULT); /* inheritable */
iupClassRegisterAttribute(ic, "HLCOLOR", NULL, NULL, IUPAF_SAMEASSYSTEM, "190 210 230", IUPAF_DEFAULT); /* inheritable */
iupClassRegisterAttribute(ic, "HANDLERSIZE", NULL, NULL, IUPAF_SAMEASSYSTEM, "0", IUPAF_NO_INHERIT);
iupClassRegisterAttribute(ic, "IMAGE", NULL, NULL, NULL, NULL, IUPAF_IHANDLENAME | IUPAF_NO_DEFAULTVALUE | IUPAF_NO_INHERIT);
iupClassRegisterAttribute(ic, "IMAGEPRESS", NULL, NULL, NULL, NULL, IUPAF_IHANDLENAME | IUPAF_NO_DEFAULTVALUE | IUPAF_NO_INHERIT);
iupClassRegisterAttribute(ic, "IMAGEHIGHLIGHT", NULL, NULL, NULL, NULL, IUPAF_IHANDLENAME | IUPAF_NO_DEFAULTVALUE | IUPAF_NO_INHERIT);
iupClassRegisterAttribute(ic, "IMAGEINACTIVE", NULL, NULL, NULL, NULL, IUPAF_IHANDLENAME | IUPAF_NO_DEFAULTVALUE | IUPAF_NO_INHERIT);
iupClassRegisterAttribute(ic, "BACKIMAGE", NULL, NULL, NULL, NULL, IUPAF_IHANDLENAME | IUPAF_NO_DEFAULTVALUE | IUPAF_NO_INHERIT);
iupClassRegisterAttribute(ic, "BACKIMAGEPRESS", NULL, NULL, NULL, NULL, IUPAF_IHANDLENAME | IUPAF_NO_DEFAULTVALUE | IUPAF_NO_INHERIT);
iupClassRegisterAttribute(ic, "BACKIMAGEHIGHLIGHT", NULL, NULL, NULL, NULL, IUPAF_IHANDLENAME | IUPAF_NO_DEFAULTVALUE | IUPAF_NO_INHERIT);
iupClassRegisterAttribute(ic, "BACKIMAGEINACTIVE", NULL, NULL, NULL, NULL, IUPAF_IHANDLENAME | IUPAF_NO_DEFAULTVALUE | IUPAF_NO_INHERIT);
iupClassRegisterAttribute(ic, "FITTOBACKIMAGE", NULL, NULL, NULL, NULL, IUPAF_NO_INHERIT);
return ic;
}
Ihandle* IupGLVal(void)
{
return IupCreate("glval");
}