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#include "Panel.h"
#include <GL/gl.h>
Panel::Panel( int inW, int inH )
: mW( inW ), mH( inH ),
mFadeProgress( 0 ),
mVisible( false ),
mCloseButton( 19 + 21, 19 + 21, "back" ) {
mCloseButton.setVisible( false );
addButton( &mCloseButton );
}
Panel::~Panel() {
}
void Panel::setVisible( char inIsVisible ) {
mVisible = inIsVisible;
int i;
for( i=0; i<mButtons.size(); i++ ) {
Button *b = *( mButtons.getElement( i ) );
b->setVisible( mVisible );
}
}
void Panel::forceVisible() {
setVisible( true );
mFadeProgress = 1;
int i;
for( i=0; i<mButtons.size(); i++ ) {
Button *b = *( mButtons.getElement( i ) );
b->forceVisible();
}
}
void Panel::forceInvisible() {
setVisible( false );
mFadeProgress = 0;
int i;
for( i=0; i<mButtons.size(); i++ ) {
Button *b = *( mButtons.getElement( i ) );
b->forceInvisible();
}
}
char Panel::pointerUp( int inX, int inY ) {
int i;
char somePanelVisible = false;
// process in reverse order
// since higher index panels are drawn on top,
// we should look for button presses on them first
for( i=mSubPanels.size() - 1; i>=0; i-- ) {
Panel *p = *( mSubPanels.getElement( i ) );
if( p->isVisible() ) {
somePanelVisible = true;
// only pass pointer clicks to fully-visible panels
if( p->isFullyVisible() ) {
char consumed = p->pointerUp( inX, inY );
// stop as soon as consumed
if( consumed ) {
return true;
}
}
}
}
if( !somePanelVisible ) {
if( mCloseButton.isInside( inX, inY ) ) {
// inform subclass of close
closePressed();
setVisible( false );
return true;
}
}
return false;
}
void Panel::step() {
if( mVisible && mFadeProgress < 1 ) {
mFadeProgress += 0.1;
if( mFadeProgress > 1 ) {
mFadeProgress = 1;
}
}
else if( !mVisible && mFadeProgress > 0 ) {
mFadeProgress -= 0.1;
if( mFadeProgress < 0 ) {
mFadeProgress = 0;
}
}
int i;
for( i=0; i<mButtons.size(); i++ ) {
Button *b = *( mButtons.getElement( i ) );
b->step();
}
for( i=0; i<mSubPanels.size(); i++ ) {
Panel *p = *( mSubPanels.getElement( i ) );
p->step();
}
}
void Panel::addSubPanel( Panel *inPanel ) {
mSubPanels.push_back( inPanel );
}
void Panel::addButton( Button *inButton ) {
mButtons.push_back( inButton );
}
char Panel::isSubPanelVisible() {
int i;
for( i=0; i<mSubPanels.size(); i++ ) {
Panel *p = *( mSubPanels.getElement( i ) );
if( p->isVisible() ) {
return true;
}
}
return false;
}
char Panel::isSubPanelFullyVisible() {
int i;
for( i=0; i<mSubPanels.size(); i++ ) {
Panel *p = *( mSubPanels.getElement( i ) );
if( p->isFullyVisible() ) {
return true;
}
}
return false;
}
void Panel::draw() {
// skip drawing this panel if hidden
if( mFadeProgress > 0 && ! isSubPanelFullyVisible() ) {
drawBase();
}
drawSubPanels();
}
void Panel::drawBase() {
if( mFadeProgress > 0 ) {
glEnable( GL_BLEND );
glBlendFunc( GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA );
glColor4f( 0, 0, 0, mFadeProgress );
const GLfloat squareVertices[] = {
0, 0,
mW, 0,
0, mH,
mW, mH,
};
glVertexPointer( 2, GL_FLOAT, 0, squareVertices );
glEnableClientState( GL_VERTEX_ARRAY );
glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
glDisable( GL_BLEND );
int i;
for( i=0; i<mButtons.size(); i++ ) {
Button *b = *( mButtons.getElement( i ) );
b->draw();
}
}
}
void Panel::drawSubPanels() {
int i;
for( i=0; i<mSubPanels.size(); i++ ) {
Panel *p = *( mSubPanels.getElement( i ) );
p->draw();
}
}
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