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/** \file
* \brief Valuator Control
*
* See Copyright Notice in "iup.h"
*/
#include <gtk/gtk.h>
#include <gdk/gdkkeysyms.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <memory.h>
#include <stdarg.h>
#include "iup.h"
#include "iupcbs.h"
#include "iup_object.h"
#include "iup_layout.h"
#include "iup_attrib.h"
#include "iup_str.h"
#include "iup_val.h"
#include "iup_drv.h"
#include "iup_drvfont.h"
#include "iup_key.h"
#include "iupgtk_drv.h"
void iupdrvValGetMinSize(Ihandle* ih, int *w, int *h)
{
if (ih->data->type == IVAL_HORIZONTAL)
{
*w = 20;
*h = 35;
}
else
{
*w = 35;
*h = 20;
}
}
static int gtkValSetStepAttrib(Ihandle* ih, const char* value)
{
ih->data->step = atof(value);
gtk_range_set_increments(GTK_RANGE(ih->handle), ih->data->step, ih->data->pagestep);
return 0; /* do not store value in hash table */
}
static int gtkValSetPageStepAttrib(Ihandle* ih, const char* value)
{
ih->data->pagestep = atof(value);
gtk_range_set_increments(GTK_RANGE(ih->handle), ih->data->step, ih->data->pagestep);
return 0; /* do not store value in hash table */
}
static int gtkValSetValueAttrib(Ihandle* ih, const char* value)
{
double fval;
ih->data->val = atof(value);
fval = (ih->data->val-ih->data->vmin)/(ih->data->vmax - ih->data->vmin);
gtk_range_set_value(GTK_RANGE(ih->handle), fval);
return 0; /* do not store value in hash table */
}
/*********************************************************************************************/
static gboolean gtkValChangeValue(GtkRange *range, GtkScrollType scroll, double fval, Ihandle *ih)
{
double old_val = ih->data->val;
IFn cb;
if (fval < 0.0)
gtk_range_set_value(GTK_RANGE(ih->handle), 0.0);
if (fval > 1.0)
gtk_range_set_value(GTK_RANGE(ih->handle), 1.0);
ih->data->val = fval*(ih->data->vmax - ih->data->vmin) + ih->data->vmin;
iupValCropValue(ih);
cb = (IFn)IupGetCallback(ih, "VALUECHANGED_CB");
if (cb)
{
if (ih->data->val == old_val)
return FALSE;
cb(ih);
}
else
{
IFnd cb_old;
if (scroll == GTK_SCROLL_JUMP) /* scroll == 1 */
cb_old = (IFnd)IupGetCallback(ih, "MOUSEMOVE_CB");
else if((scroll >= GTK_SCROLL_STEP_BACKWARD) && (scroll <= GTK_SCROLL_END))
cb_old = (IFnd)IupGetCallback(ih, "BUTTON_PRESS_CB");
else
cb_old = (IFnd)IupGetCallback(ih, "BUTTON_RELEASE_CB");
if (cb_old)
cb_old(ih, ih->data->val);
}
if (fval < 0.0 || fval > 1.0)
return TRUE;
(void)range;
return FALSE;
}
static gboolean gtkValKeyPressEvent(GtkWidget *widget, GdkEventKey *evt, Ihandle *ih)
{
if (iupgtkKeyPressEvent(widget, evt, ih) == TRUE)
return TRUE;
/* change Home and End default behaviour */
if (ih->data->inverted)
{
if (evt->keyval==GDK_Home || evt->keyval==GDK_KP_Home)
{
/* set to maximum */
gtk_range_set_value(GTK_RANGE(ih->handle), 1.0);
gtkValChangeValue(GTK_RANGE(ih->handle), GTK_SCROLL_START, 1.0, ih);
return TRUE;
}
if (evt->keyval==GDK_End || evt->keyval==GDK_KP_End)
{
/* set to minimum */
gtk_range_set_value(GTK_RANGE(ih->handle), 0.0);
gtkValChangeValue(GTK_RANGE(ih->handle), GTK_SCROLL_END, 0.0, ih);
return TRUE;
}
}
return FALSE;
}
/*********************************************************************************************/
static int gtkValMapMethod(Ihandle* ih)
{
GtkObject *adjustment;
/* value, lower, upper, step_increment, page_increment, page_size */
/* page_size value only makes a difference for scrollbar widgets */
adjustment = gtk_adjustment_new (0, 0, 1.0, 0.01, 0.1, 0);
if (!adjustment)
return IUP_ERROR;
if (ih->data->type == IVAL_HORIZONTAL)
ih->handle = gtk_hscale_new(GTK_ADJUSTMENT(adjustment));
else
ih->handle = gtk_vscale_new(GTK_ADJUSTMENT(adjustment));
if (!ih->handle)
return IUP_ERROR;
/* add to the parent, all GTK controls must call this. */
iupgtkBaseAddToParent(ih);
if (!iupAttribGetBoolean(ih, "CANFOCUS"))
GTK_WIDGET_FLAGS(ih->handle) &= ~GTK_CAN_FOCUS;
g_signal_connect(G_OBJECT(ih->handle), "enter-notify-event", G_CALLBACK(iupgtkEnterLeaveEvent), ih);
g_signal_connect(G_OBJECT(ih->handle), "leave-notify-event", G_CALLBACK(iupgtkEnterLeaveEvent), ih);
g_signal_connect(G_OBJECT(ih->handle), "focus-in-event", G_CALLBACK(iupgtkFocusInOutEvent), ih);
g_signal_connect(G_OBJECT(ih->handle), "focus-out-event", G_CALLBACK(iupgtkFocusInOutEvent), ih);
g_signal_connect(G_OBJECT(ih->handle), "show-help", G_CALLBACK(iupgtkShowHelp), ih);
g_signal_connect(G_OBJECT(ih->handle), "key-press-event", G_CALLBACK(gtkValKeyPressEvent), ih);
g_signal_connect(G_OBJECT(ih->handle), "change-value", G_CALLBACK(gtkValChangeValue), ih);
/* configure the scale */
gtk_scale_set_draw_value(GTK_SCALE(ih->handle), FALSE);
gtk_range_set_range(GTK_RANGE(ih->handle), 0.0, 1.0);
if (ih->data->inverted)
gtk_range_set_inverted(GTK_RANGE(ih->handle), TRUE);
gtk_widget_realize(ih->handle);
/* update a mnemonic in a label if necessary */
iupgtkUpdateMnemonic(ih);
return IUP_NOERROR;
}
void iupdrvValInitClass(Iclass* ic)
{
/* Driver Dependent Class functions */
ic->Map = gtkValMapMethod;
/* Driver Dependent Attribute functions */
/* Visual */
iupClassRegisterAttribute(ic, "BGCOLOR", NULL, iupdrvBaseSetBgColorAttrib, IUPAF_SAMEASSYSTEM, "DLGBGCOLOR", IUPAF_DEFAULT);
/* Special */
/* IupVal only */
iupClassRegisterAttribute(ic, "VALUE", iupValGetValueAttrib, gtkValSetValueAttrib, NULL, NULL, IUPAF_NO_DEFAULTVALUE|IUPAF_NO_INHERIT);
iupClassRegisterAttribute(ic, "PAGESTEP", iupValGetPageStepAttrib, gtkValSetPageStepAttrib, IUPAF_SAMEASSYSTEM, "0.1", IUPAF_NO_INHERIT);
iupClassRegisterAttribute(ic, "STEP", iupValGetStepAttrib, gtkValSetStepAttrib, IUPAF_SAMEASSYSTEM, "0.01", IUPAF_NO_INHERIT);
iupClassRegisterAttribute(ic, "SHOWTICKS", NULL, NULL, NULL, NULL, IUPAF_WRITEONLY|IUPAF_READONLY); /* showticks is not supported in GTK */
}
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