button.cpp

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// Button.cpp: implementation of the CButton class.
//
//////////////////////////////////////////////////////////////////////
#include <gtk/gtk.h>

#include "Button.h"
#include "Pixmap.h"

//////////////////////////////////////////////////////////////////////
// Construction/Destruction
//////////////////////////////////////////////////////////////////////

CButton::CButton(gchar* label, CWidget* parent) : CWidget(parent) 
{ 
	m_Label = NULL;
	m_pix1 = m_pix2 = (CPixmap*)NULL;
	m_bState = false;	
	m_hHandle = Create(label);	
	SetData("Wellgain Objects", this);
	gtk_signal_connect (GTK_OBJECT (m_hHandle), "destroy",
                      GTK_SIGNAL_FUNC (on_widget_destroy),
                      this);
	Show();
}

CButton::~CButton()
{	
	if(m_pix1)
		delete m_pix1;
	m_pix1 = NULL;
	if(m_pix2)
		delete m_pix2;
	m_pix2 = NULL;
	if(m_Label)
		delete m_Label;
	m_Label = NULL;
}

GtkWidget* CButton::Create(gchar* label)
{
	GtkWidget* but;
	but = gtk_button_new();
	if(label){
		m_Label = new CLabel(label, this);
		gtk_container_add (GTK_CONTAINER (but), m_Label->GetHandle());
	}	

	return but;
}

const char* CButton::GetLabel() const
{
	if(m_Label)
		return m_Label->GetText();
	return NULL;

}

void CButton::SetLabel(const char* szText)
{
	if(m_Label)
		m_Label->SetText(szText);
}

void CButton::SetPixLabel(const gchar     *xpm_filename,
                          const gchar     *label_text )
{
	if(!m_hHandle)
		return ;
    GtkWidget *box1;
    GtkWidget *pixmapwid;
    
	if(GetChild()){
		gtk_container_remove(GTK_CONTAINER(m_hHandle), GetChild());
		if(m_Label){
			delete m_Label;
			m_Label = NULL;
		}
	}

	if(!label_text){
		CPixmap* pix = new CPixmap(xpm_filename);
		pixmapwid = gtk_pixmap_new (pix->GetPixmap(), pix->GetMask());	
		gtk_widget_show(pixmapwid);
		gtk_container_add (GTK_CONTAINER (m_hHandle), pixmapwid);
		SetSize(pix->GetWidth(), pix->GetHeight());
		delete pix;
	}
	else{
		/* Create box for xpm and label */
		box1 = gtk_hbox_new (FALSE, 0);		
		gtk_widget_show(box1);
		gtk_container_add (GTK_CONTAINER (m_hHandle), box1);
		CPixmap* pix = new CPixmap(xpm_filename);
		pixmapwid = gtk_pixmap_new (pix->GetPixmap(), pix->GetMask());
		delete pix;
		
		/* Pack the pixmap and label into the box */
		gtk_box_pack_start (GTK_BOX (box1),
				pixmapwid, FALSE, FALSE, 1);
		gtk_widget_show(pixmapwid);

		/* Create a label for the button */
		if(label_text){
			m_Label = new CLabel(label_text, this);			
			gtk_box_pack_start (GTK_BOX (box1), m_Label->GetHandle(), FALSE, FALSE, 0);   			
		}
	}
}

void CButton::SetPixmap(const gchar *file_normal, const gchar *file_active, bool isToggle)
{
	if(!m_hHandle)
		return ;

	if(m_pix1)
		delete m_pix1;
	m_pix1 = new CPixmap(file_normal);
	if(m_pix2)
		delete m_pix2;
	m_pix2 = new CPixmap(file_active);
	
	CPixmap* pix;
	if(GetState())
		pix = m_pix2;
	else
		pix = m_pix1;

	GtkWidget* child = GetChild();	
	if(child){
		if(GTK_IS_PIXMAP(child)){			
			gtk_pixmap_set(GTK_PIXMAP(child), pix->GetPixmap(), pix->GetMask());
			return;
		}
		else{
			gtk_container_remove(GTK_CONTAINER(m_hHandle), child);	
			if(m_Label){
				delete m_Label;
				m_Label = NULL;
			}
		}
	}
	GtkWidget* p = gtk_pixmap_new(pix->GetPixmap(), pix->GetMask());	
	gtk_container_add(GTK_CONTAINER(m_hHandle), p);
	gtk_widget_show(p);	
	SetSize(pix->GetWidth(), pix->GetHeight());
	
	gtk_signal_connect (GTK_OBJECT (GetHandle()), "pressed",
						  GTK_SIGNAL_FUNC (on_button_pressed),
						  this);
	if(isToggle)
		gtk_signal_connect (GTK_OBJECT (GetHandle()), "released",
							  GTK_SIGNAL_FUNC (on_button_released),
							  this);
}

void CButton::SetState(bool bActive)
{
	if(!m_hHandle)
		return ;
	if(m_bState == bActive)
		return;
	m_bState = bActive;

	CPixmap* pix;
	if(GetState())
		pix = m_pix2;
	else
		pix = m_pix1;
	if(!pix)
		return;	

	GtkWidget* child = GetChild();
	if(child){
		if(GTK_IS_PIXMAP(child)){
			gtk_pixmap_set(GTK_PIXMAP(child), pix->GetPixmap(), pix->GetMask());			
			return;
		}
		else{			
			gtk_container_remove(GTK_CONTAINER(m_hHandle), child);	
			if(m_Label){
				delete m_Label;
				m_Label = NULL;
			}
		}
	}
	GtkWidget* p = gtk_pixmap_new(pix->GetPixmap(), pix->GetMask());	
	gtk_container_add(GTK_CONTAINER(m_hHandle), p);
	gtk_widget_show(p);	
}

void CButton::on_button_pressed(GtkButton* button, gpointer user_data)
{
	CButton* b = (CButton*)user_data;
	if(b)
		b->SetState(true);
}

void CButton::on_button_released(GtkButton* button, gpointer user_data)
{
	CButton* b = (CButton*)user_data;
	if(b)
		b->SetState(false);
}