/** \file button.c
* Toolbar button creation and handling
*/
/* XTrkCad - Model Railroad CAD
* Copyright (C) 2005 Dave Bullis
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; 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>
#define GTK_DISABLE_SINGLE_INCLUDES
#define GDK_DISABLE_DEPRECATED
#define GTK_DISABLE_DEPRECATED
#define GSEAL_ENABLE
#include <gtk/gtk.h>
#include <gdk/gdk.h>
#include "gtkint.h"
#include "i18n.h"
#define MIN_BUTTON_WIDTH (80)
/*
*****************************************************************************
*
* Simple Buttons
*
*****************************************************************************
*/
/**
* Set the state of the button
*
* \param bb IN the button
* \param value IN TRUE for active, FALSE for inactive
*/
void wButtonSetBusy(wButton_p bb, int value)
{
bb->recursion++;
gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(bb->widget), value);
bb->recursion--;
bb->busy = value;
if (!value) {
if (bb->timer_id) {
g_source_remove(bb->timer_id);
bb->timer_id = 0;
}
bb->timer_state = -1;
}
}
/**
* Set the label of a button, does also allow to set an icon
*
* \param widget IN
* \param option IN
* \param labelStr IN
* \param labelG IN
* \param imageG IN
*/
void wlibSetLabel(
GtkWidget *widget,
long option,
const char * labelStr,
GtkLabel * * labelG,
GtkWidget * * imageG)
{
wIcon_p bm;
GdkBitmap * mask;
if (widget == 0) {
abort();
}
if (labelStr) {
if (option&BO_ICON) {
GdkPixbuf *pixbuf;
bm = (wIcon_p)labelStr;
if (bm->gtkIconType == gtkIcon_pixmap) {
pixbuf = gdk_pixbuf_new_from_xpm_data((const char**)bm->bits);
} else {
pixbuf = wlibPixbufFromXBM( bm );
}
double scaleicon;
wPrefGetFloat(PREFSECTION, LARGEICON, &scaleicon, 1.0);
if (scaleicon<1.0) scaleicon=1.0;
if (scaleicon>2.0) scaleicon=2.0;
GdkPixbuf *pixbuf2 =
gdk_pixbuf_scale_simple(pixbuf, gdk_pixbuf_get_width(pixbuf)*scaleicon, gdk_pixbuf_get_height(pixbuf)*scaleicon, GDK_INTERP_BILINEAR);
g_object_ref_sink(pixbuf);
g_object_unref((gpointer)pixbuf);
if (*imageG==NULL) {
*imageG = gtk_image_new_from_pixbuf(pixbuf2);
gtk_container_add(GTK_CONTAINER(widget), *imageG);
gtk_widget_show(*imageG);
} else {
gtk_image_set_from_pixbuf(GTK_IMAGE(*imageG), pixbuf2);
}
g_object_ref_sink(pixbuf2);
g_object_unref((gpointer)pixbuf2);
} else {
if (*labelG==NULL) {
*labelG = (GtkLabel*)gtk_label_new(wlibConvertInput(labelStr));
gtk_container_add(GTK_CONTAINER(widget), (GtkWidget*)*labelG);
gtk_widget_show((GtkWidget*)*labelG);
} else {
gtk_label_set_text(*labelG, wlibConvertInput(labelStr));
}
}
}
}
/**
* Change only the text label of a button
* \param bb IN button handle
* \param labelStr IN new label string
*/
void wButtonSetLabel(wButton_p bb, const char * labelStr)
{
wlibSetLabel(bb->widget, bb->option, labelStr, &bb->labelG, &bb->imageG);
}
/**
* Perform the user callback function
*
* \param bb IN button handle
*/
void wlibButtonDoAction(
wButton_p bb)
{
if (bb->action) {
bb->action(bb->data);
}
}
/**
* Signal handler for button push
* \param widget IN the widget or NULL for autorepeat
* \param value IN the button handle (same as widget???)
*/
static void pushButt(
GtkWidget *widget,
gpointer value)
{
wButton_p b = (wButton_p)value;
if (debugWindow >= 2) {
printf("%s button pushed\n", b->labelStr?b->labelStr:"No label");
}
if (b->recursion) {
return;
}
wlibStringUpdate();
if (b->action) {
b->action(b->data);
}
}
#define REPEAT_STAGE0_DELAY 500
#define REPEAT_STAGE1_DELAY 150
#define REPEAT_STAGE2_DELAY 100
/* Timer callback function! */
static int timer_func ( void * data)
{
wButton_p bb = (wButton_p)data;
if (bb->timer_id == 0) {
bb->timer_state = -1;
return FALSE;
}
/* Autorepeat state machine */
switch (bb->timer_state) {
case 0: /* Enable slow auto-repeat */
g_source_remove(bb->timer_id);
bb->timer_id = 0;
bb->timer_state = 1;
bb->timer_id = g_timeout_add( REPEAT_STAGE1_DELAY, timer_func, bb);
bb->timer_count = 0;
break;
case 1: /* Check if it's time for fast repeat yet */
if (bb->timer_count++ > 10)
bb->timer_state = 2;
break;
case 2: /* Start fast auto-repeat */
g_source_remove(bb->timer_id);
bb->timer_id = 0;
bb->timer_state = 3;
bb->timer_id = g_timeout_add( REPEAT_STAGE2_DELAY, timer_func, bb);
break;
case 3:
break;
default:
g_source_remove(bb->timer_id);
bb->timer_id = 0;
bb->timer_state = -1;
return FALSE;
break;
}
pushButt(NULL,bb);
return TRUE;
}
static gint pressButt(
GtkWidget *widget,
GdkEventButton *event,
wButton_p bb) {
if ( debugWindow >= 1 )
printf( "buttonPress: %s\n", bb->labelStr );
if (bb->recursion) {
return TRUE;
}
if (bb->option & BO_REPEAT) {
/* Remove an existing timer */
if (bb->timer_id)
g_source_remove(bb->timer_id);
/* Setup a timer */
bb->timer_id = g_timeout_add( REPEAT_STAGE0_DELAY, timer_func, bb);
bb->timer_state = 0;
}
if (!bb->busy) {
bb->recursion++;
int sensitive = gtk_widget_get_sensitive (GTK_WIDGET(bb->widget));
if (sensitive)
gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(bb->widget), TRUE);
bb->recursion--;
}
return TRUE;
}
static gint releaseButt(
GtkWidget *widget,
GdkEventButton *event,
wButton_p bb) {
if ( debugWindow >= 1 )
printf( "buttonRelease: %s\n", bb->labelStr );
/* Remove any existing timer */
if (bb->timer_id) {
g_source_remove(bb->timer_id);
bb->timer_id = 0;
}
bb->timer_state = -1;
pushButt(widget,bb); //Do here to simulate "clicked"
if (!bb->busy) {
bb->recursion++;
gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(bb->widget), FALSE);
bb->recursion--;
}
return TRUE;
}
/**
* Called after expose event default hander - allows the button to be outlined
*/
static wBool_t exposeButt(
GtkWidget *widget,
GdkEventExpose *event,
gpointer g)
{
wControl_p b = (wControl_p)g;
return wControlExpose(widget,event,b);
}
/**
* Create a button
*
* \param parent IN parent window
* \param x IN X-position
* \param y IN Y-position
* \param helpStr IN Help string
* \param labelStr IN Label
* \param option IN Options
* \param width IN Width of button
* \param action IN Callback
* \param data IN User data as context
* \returns button widget
*/
wButton_p wButtonCreate(
wWin_p parent,
wWinPix_t x,
wWinPix_t y,
const char * helpStr,
const char * labelStr,
long option,
wWinPix_t width,
wButtonCallBack_p action,
void * data)
{
wButton_p b;
if (option&BO_ICON) //The labelStr here is a wIcon_p
b = wlibAlloc(parent, B_BUTTON, x, y, " ", sizeof *b, data);
else
b = wlibAlloc(parent, B_BUTTON, x, y, labelStr, sizeof *b, data);
b->option = option;
b->action = action;
wlibComputePos((wControl_p)b);
b->widget = gtk_toggle_button_new();
g_signal_connect(GTK_OBJECT(b->widget), "button_press_event",
G_CALLBACK(pressButt), b);
g_signal_connect(GTK_OBJECT(b->widget), "button_release_event",
G_CALLBACK(releaseButt), b);
//g_signal_connect(GTK_OBJECT(b->widget), "clicked",
// G_CALLBACK(pushButt), b);
g_signal_connect_after(GTK_OBJECT(b->widget), "expose-event",
G_CALLBACK(exposeButt), b);
if (width > 0) {
gtk_widget_set_size_request(b->widget, width, -1);
}
if( labelStr ){
wButtonSetLabel(b, labelStr);
}
gtk_fixed_put(GTK_FIXED(parent->widget), b->widget, b->realX, b->realY);
if (option & BB_DEFAULT) {
gtk_widget_set_can_default(b->widget, GTK_CAN_DEFAULT);
gtk_widget_grab_default(b->widget);
gtk_window_set_default(GTK_WINDOW(parent->gtkwin), b->widget);
}
wlibControlGetSize((wControl_p)b);
if (width == 0 && b->w < MIN_BUTTON_WIDTH && (b->option&BO_ICON)==0) {
b->w = MIN_BUTTON_WIDTH;
gtk_widget_set_size_request(b->widget, b->w, b->h);
}
gtk_widget_show(b->widget);
wlibAddButton((wControl_p)b);
wlibAddHelpString(b->widget, helpStr);
return b;
}
/*
*****************************************************************************
*
* Choice Boxes
*
*****************************************************************************
*/
struct wChoice_t {
WOBJ_COMMON
long *valueP;
wChoiceCallBack_p action;
int recursion;
};
/**
* Get the state of a group of buttons. If the group consists of
* radio buttons, the return value is the index of the selected button
* or -1 for none. If toggle buttons are checked, a bit is set for each
* button that is active.
*
* \param bc IN
* \returns state of group
*/
static long choiceGetValue(
wChoice_p bc)
{
GList * child, * children;
long value, inx;
if (bc->type == B_TOGGLE) {
value = 0;
} else {
value = -1;
}
for (children=child=gtk_container_get_children(GTK_CONTAINER(bc->widget)),inx=0;
child; child=child->next,inx++) {
if (gtk_toggle_button_get_active(child->data)) {
if (bc->type == B_TOGGLE) {
value |= (1<<inx);
} else {
value = inx;
}
}
}
if (children) {
g_list_free(children);
}
return value;
}
/**
* Set the active radio button in a group
*
* \param bc IN button group
* \param value IN index of active button
*/
void wRadioSetValue(
wChoice_p bc, /* Radio box */
long value) /* Value */
{
GList * child, * children;
long inx;
for (children=child=gtk_container_get_children(GTK_CONTAINER(bc->widget)),inx=0;
child; child=child->next,inx++) {
if (inx == value) {
bc->recursion++;
gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(child->data), TRUE);
bc->recursion--;
}
}
if (children) {
g_list_free(children);
}
}
/**
* Get the active button from a group of radio buttons
*
* \param bc IN
* \returns
*/
long wRadioGetValue(
wChoice_p bc) /* Radio box */
{
return choiceGetValue(bc);
}
/**
* Set a group of toggle buttons from a bitfield
*
* \param bc IN button group
* \param value IN bitfield
*/
void wToggleSetValue(
wChoice_p bc, /* Toggle box */
long value) /* Values */
{
GList * child, * children;
long inx;
bc->recursion++;
for (children=child=gtk_container_get_children(GTK_CONTAINER(bc->widget)),inx=0;
child; child=child->next,inx++) {
gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(child->data),
(value&(1<<inx))!=0);
}
if (children) {
g_list_free(children);
}
bc->recursion--;
}
/**
* Get the active buttons from a group of toggle buttons
*
* \param b IN
* \returns
*/
long wToggleGetValue(
wChoice_p b) /* Toggle box */
{
return choiceGetValue(b);
}
/**
* Signal handler for button selection in radio buttons and toggle
* button group
*
* \param widget IN the button group
* \param b IN user data (button group????)
* \returns always 1
*/
static int pushChoice(
GtkWidget *widget,
gpointer b)
{
wChoice_p bc = (wChoice_p)b;
long value = choiceGetValue(bc);
if (debugWindow >= 2) {
printf("%s choice pushed = %ld\n", bc->labelStr?bc->labelStr:"No label",
value);
}
if (bc->type == B_RADIO &&
!(gtk_toggle_button_get_active(GTK_TOGGLE_BUTTON(widget)))) {
return 1;
}
if (bc->recursion) {
return 1;
}
if (bc->valueP) {
*bc->valueP = value;
}
if (bc->action) {
bc->action(value, bc->data);
}
return 1;
}
/**
* Signal handler used to draw a frame around a widget, used to visually
* group several buttons together
*
* \param b IN widget
*/
static void choiceRepaint(
wControl_p b)
{
wChoice_p bc = (wChoice_p)b;
if (gtk_widget_get_visible(b->widget)) {
wlibDrawBox(bc->parent, wBoxBelow, bc->realX-1, bc->realY-1, bc->w+1, bc->h+1);
}
}
/**
* Create a group of radio buttons.
*
* \param parent IN parent window
* \param x IN X-position
* \param y IN Y-position
* \param helpStr IN Help string
* \param labelStr IN Label
* \param option IN Options
* \param labels IN Labels
* \param valueP IN Selected value
* \param action IN Callback
* \param data IN User data as context
* \returns radio button widget
*/
wChoice_p wRadioCreate(
wWin_p parent,
wWinPix_t x,
wWinPix_t y,
const char * helpStr,
const char * labelStr,
long option,
const char * const *labels,
long *valueP,
wChoiceCallBack_p action,
void *data)
{
wChoice_p b;
const char * const * label;
GtkWidget *butt0=NULL, *butt;
if ((option & BC_NOBORDER)==0) {
if (x>=0) {
x++;
} else {
x--;
}
if (y>=0) {
y++;
} else {
y--;
}
}
b = wlibAlloc(parent, B_RADIO, x, y, labelStr, sizeof *b, data);
b->option = option;
b->action = action;
b->valueP = valueP;
wlibComputePos((wControl_p)b);
((wControl_p)b)->outline = FALSE;
if (option&BC_HORZ) {
b->widget = gtk_hbox_new(FALSE, 0);
} else {
b->widget = gtk_vbox_new(FALSE, 0);
}
if (b->widget == 0) {
abort();
}
for (label=labels; *label; label++) {
butt = gtk_radio_button_new_with_label(
butt0?gtk_radio_button_get_group(GTK_RADIO_BUTTON(butt0)):NULL, _(*label));
if (butt0==NULL) {
butt0 = butt;
}
gtk_box_pack_start(GTK_BOX(b->widget), butt, TRUE, TRUE, 0);
gtk_widget_show(butt);
g_signal_connect(GTK_OBJECT(butt), "toggled",
G_CALLBACK(pushChoice), b);
g_signal_connect_after(GTK_OBJECT(b->widget), "expose-event",
G_CALLBACK(exposeButt), b);
wlibAddHelpString(butt, helpStr);
}
if (option & BB_DEFAULT) {
gtk_widget_set_can_default(b->widget, TRUE);
gtk_widget_grab_default(b->widget);
}
if (valueP) {
wRadioSetValue(b, *valueP);
}
if ((option & BC_NOBORDER)==0) {
b->repaintProc = choiceRepaint;
b->w += 2;
b->h += 2;
}
gtk_fixed_put(GTK_FIXED(parent->widget), b->widget, b->realX, b->realY);
wlibControlGetSize((wControl_p)b);
if (labelStr) {
b->labelW = wlibAddLabel((wControl_p)b, labelStr);
}
gtk_widget_show(b->widget);
wlibAddButton((wControl_p)b);
return b;
}
/**
* Create a group of toggle buttons.
*
* \param parent IN parent window
* \param x IN X-position
* \param y IN Y-position
* \param helpStr IN Help string
* \param labelStr IN Label
* \param option IN Options
* \param labels IN Labels
* \param valueP IN Selected value
* \param action IN Callback
* \param data IN User data as context
* \returns toggle button widget
*/
wChoice_p wToggleCreate(
wWin_p parent,
wWinPix_t x,
wWinPix_t y,
const char * helpStr,
const char * labelStr,
long option,
const char * const * labels,
long *valueP,
wChoiceCallBack_p action,
void *data)
{
wChoice_p b;
const char * const * label;
if ((option & BC_NOBORDER)==0) {
if (x>=0) {
x++;
} else {
x--;
}
if (y>=0) {
y++;
} else {
y--;
}
}
b = wlibAlloc(parent, B_TOGGLE, x, y, labelStr, sizeof *b, data);
b->option = option;
b->action = action;
wlibComputePos((wControl_p)b);
((wControl_p)b)->outline = FALSE;
if (option&BC_HORZ) {
b->widget = gtk_hbox_new(FALSE, 0);
} else {
b->widget = gtk_vbox_new(FALSE, 0);
}
if (b->widget == 0) {
abort();
}
for (label=labels; *label; label++) {
GtkWidget *butt;
butt = gtk_check_button_new_with_label(_(*label));
gtk_box_pack_start(GTK_BOX(b->widget), butt, TRUE, TRUE, 0);
gtk_widget_show(butt);
g_signal_connect(GTK_OBJECT(butt), "toggled",
G_CALLBACK(pushChoice), b);
g_signal_connect_after(GTK_OBJECT(b->widget), "expose-event",
G_CALLBACK(exposeButt), b);
wlibAddHelpString(butt, helpStr);
}
if (valueP) {
wToggleSetValue(b, *valueP);
}
if ((option & BC_NOBORDER)==0) {
b->repaintProc = choiceRepaint;
b->w += 2;
b->h += 2;
}
gtk_fixed_put(GTK_FIXED(parent->widget), b->widget, b->realX, b->realY);
wlibControlGetSize((wControl_p)b);
if (labelStr) {
b->labelW = wlibAddLabel((wControl_p)b, labelStr);
}
gtk_widget_show(b->widget);
wlibAddButton((wControl_p)b);
return b;
}