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/*
* $Id: ctkvscale.c,v 1.10 2000/07/12 00:44:10 cbond Exp $
*
* CTK - Console Toolkit
*
* Copyright (C) 1998-2000 Stormix Technologies Inc.
*
* License: LGPL
*
* Authors: Kevin Lindsay, Wesley Terpstra
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <stdio.h>
#include <stdlib.h>
#include <glib.h>
#include "ctk.h"
#include "ctkcolor.h"
#include "ctkutil.h"
gpointer ctk_vscale_destroy(CtkObject* object);
gboolean ctk_vscale_key_press (CtkWidget* widget, CdkEventKey* event, gpointer data);
gboolean ctk_vscale_button_press(CtkWidget* widget, CdkEventButton* event, gpointer data);
gboolean ctk_vscale_drag (CtkWidget* widget, CdkEventButton* event, gpointer data);
/* Initialize the vscale */
void ctk_vscale_init(CtkVScale* vscale)
{
ctk_scale_init(&vscale->scale);
CTK_OBJECT(vscale)->type = CtkTypeVScale;
((CtkWidget *)vscale)->height = 2;
((CtkWidget *)vscale)->orig_height = 2;
((CtkWidget *)vscale)->main_col = ctk_calculate_palette(CTK_COLOR_RED,CTK_COLOR_LIGHT_GRAY);
((CtkWidget *)vscale)->inverse_col = ctk_calculate_palette(CTK_COLOR_YELLOW,CTK_COLOR_RED);
((CtkWidget *)vscale)->selected_col = ctk_calculate_palette(CTK_COLOR_BLUE,CTK_COLOR_LIGHT_GRAY);
((CtkObject *)vscale)->destroy_func = ctk_vscale_destroy;
ctk_signal_connect(CTK_OBJECT(vscale), "button_press_event",
CTK_SIGNAL_FUNC(&ctk_vscale_button_press), NULL);
ctk_signal_connect(CTK_OBJECT(vscale), "key_press_event",
CTK_SIGNAL_FUNC(&ctk_vscale_key_press), NULL);
ctk_signal_connect(CTK_OBJECT(vscale), "ctk_drag",
CTK_SIGNAL_FUNC(&ctk_vscale_drag), NULL);
}
/* New VScale */
CtkWidget* ctk_vscale_new(CtkAdjustment* adjustment)
{
CtkVScale* vscale;
gchar* upper;
vscale = g_malloc(sizeof(CtkVScale));
ctk_vscale_init(vscale);
if (!adjustment)
adjustment = CTK_ADJUSTMENT(ctk_adjustment_new(0,0,0,0,0,0));
upper = ctk_util_ftos(adjustment->upper,0);
((CtkRange *)vscale)->adjustment = adjustment;
((CtkWidget *)vscale)->orig_width = strlen(upper);
return ((CtkWidget *)vscale);
}
/* Handle Key Events */
gboolean ctk_vscale_key_press(CtkWidget *widget, CdkEventKey* event, gpointer data)
{
CtkVScale* vscale;
CtkRange* range;
gboolean redraw;
gint ch;
redraw = TRUE;
ch = event->keyval;
if (!widget)
return FALSE;
vscale = CTK_VSCALE(widget);
range = CTK_RANGE (widget);
if ((ch == AK_ARROW_RIGHT) || (ch == AK_ARROW_DOWN)) {
ctk_adjustment_set_value(range->adjustment,
range->adjustment->value+
range->adjustment->step_increment);
}
else if ((ch == AK_ARROW_LEFT) || (ch == AK_ARROW_UP)) {
ctk_adjustment_set_value(range->adjustment,
range->adjustment->value-
range->adjustment->step_increment);
}
else if (ch == AK_PAGEDOWN)
{
ctk_adjustment_set_value(range->adjustment,
range->adjustment->value+
range->adjustment->page_increment);
}
else if (ch == AK_PAGEUP)
{
ctk_adjustment_set_value(range->adjustment,
range->adjustment->value-
range->adjustment->page_increment);
} else
redraw = FALSE;
if (redraw)
{
ctk_draw_mark_changed(widget);
}
return TRUE;
}
/* VScale mouse handle events */
gboolean ctk_vscale_button_press(CtkWidget* widget, CdkEventButton* event, gpointer data)
{
CtkAdjustment* adjustment;
gint row_with_bullet;
adjustment = CTK_RANGE(widget)->adjustment;
row_with_bullet = (widget->height-3) * (adjustment->value - adjustment->lower)
/ (adjustment->upper - adjustment->lower);
row_with_bullet += widget->row + 2;
if (event->y == widget->row + 1)
{
ctk_adjustment_set_value(adjustment,
adjustment->value -
adjustment->step_increment);
ctk_draw_mark_changed(widget);
}
else if (event->y == widget->row + widget->height - 1)
{
ctk_adjustment_set_value(adjustment,
adjustment->value +
adjustment->step_increment);
ctk_draw_mark_changed(widget);
}
else if (event->y > row_with_bullet)
{
ctk_adjustment_set_value(adjustment,
adjustment->value +
adjustment->page_increment);
ctk_draw_mark_changed(widget);
}
else if (event->y < row_with_bullet)
{
ctk_adjustment_set_value(adjustment,
adjustment->value -
adjustment->page_increment);
ctk_draw_mark_changed(widget);
}
return TRUE;
}
gboolean ctk_vscale_drag(CtkWidget* widget, CdkEventButton* event, gpointer data)
{
CtkAdjustment* adjustment;
gint adjust;
adjustment = CTK_RANGE(widget)->adjustment;
adjust = (adjustment->upper - adjustment->lower) * event->dy / (widget->height - 3);
ctk_adjustment_set_value(adjustment,
adjustment->value + adjust);
ctk_draw_mark_changed(widget);
return TRUE;
}
/* Destroy Hscale data */
gpointer ctk_vscale_destroy(CtkObject* object)
{
if (object)
ctk_range_destroy(CTK_RANGE(object));
return NULL;
}
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