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// Jason Rohrer
// ProgressBar.cpp
/**
*
* ProgressBar Gui element implementation
*
*
* Created 11-6-99
* Mods:
* Jason Rohrer 11-8-99 Changed to use GraphicBuffer object as screen buffer
*
*/
#include "ProgressBar.h"
ProgressBar::ProgressBar(int x, int y, int w, int h, Color bordC, Color hC, Color tipC) {
startX = x;
startY = y;
wide = w;
high = h;
barWide = wide - 2*borderWide;
barHigh = high - 2*borderWide;
borderC = bordC;
highC = hC;
barTipC = tipC;
imageMap = new unsigned long[high * wide];
mapYOffset = new int[high];
// precalc y offsets into 2d image map
for( int y=0; y<high; y++ ) {
mapYOffset[y] = y*wide;
}
// prepare image map
for( int y=0; y<high; y++ ) {
int yContrib = mapYOffset[y];
for( int x=0; x<wide; x++ ) {
if( y<borderWide || x<borderWide || y>high-borderWide-1 || x>wide-borderWide-1 ) {
imageMap[ yContrib + x ] = borderC.composite; // border
}
else {
imageMap[ yContrib + x ] = 0xFF000000; // black inside
}
}
}
lastProgress = 0;
}
ProgressBar::~ProgressBar() {
delete [] imageMap;
delete [] mapYOffset;
}
void ProgressBar::setProgress(float fractionFull) {
if( fractionFull < 0) fractionFull = 0;
if( fractionFull > 1) fractionFull = 1;
if( fractionFull < lastProgress ) { // decreasing proress, erase part of bar
int deleteXStart = (int)((fractionFull) * barWide + borderWide);
int deleteXEnd = (int)((lastProgress) * barWide + borderWide);
for( int y=borderWide; y<high-borderWide; y++ ) {
int yContrib = mapYOffset[y];
for( int x=deleteXStart; x<=deleteXEnd; x++ ) {
imageMap[ yContrib + x ] = 0xFF000000; // erase to black
}
// color bar tip
imageMap[yContrib + deleteXStart] = barTipC.composite;
}
}
else if( fractionFull > lastProgress) { //progress has increased
int addXStart = (int)((lastProgress) * barWide + borderWide);
int addXEnd = (int)((fractionFull) * barWide + borderWide);
float weight = lastProgress;
float deltaWeight = (fractionFull - lastProgress) / (addXEnd - addXStart);
for( int x=addXStart; x<addXEnd; x++) {
// weighted color
unsigned long thisColor = highC.getWeightedComposite(weight);
weight += deltaWeight;
for( int y=borderWide; y<high-borderWide; y++) {
imageMap[mapYOffset[y] + x] = thisColor;
}
}
// color bar tip
for( int y=borderWide; y<high-borderWide; y++) {
imageMap[mapYOffset[y] + addXEnd] = barTipC.composite;
}
}
lastProgress = fractionFull;
}
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