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RAW histogram mode; see issue #639

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This commit is contained in:
Oliver Duis
2011-04-25 10:21:31 +02:00
parent f11ccfc75e
commit 2c949cf011
15 changed files with 138 additions and 208 deletions
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199
rtgui/histogrampanel.cc
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@@ -29,16 +29,19 @@ HistogramPanel::HistogramPanel () {
showGreen = Gtk::manage (new Gtk::ToggleButton (M("HISTOGRAM_BUTTON_G")));
showBlue = Gtk::manage (new Gtk::ToggleButton (M("HISTOGRAM_BUTTON_B")));
showValue = Gtk::manage (new Gtk::ToggleButton (M("HISTOGRAM_BUTTON_L")));
showRAW = Gtk::manage (new Gtk::ToggleButton (M("HISTOGRAM_BUTTON_RAW")));
Gtk::VBox* vbox = Gtk::manage (new Gtk::VBox (false, 0));
showRed->set_active (true);
showGreen->set_active (true);
showBlue->set_active (true);
showValue->set_active (true);
showRAW->set_active (false);
vbox->pack_start (*showRed, Gtk::PACK_SHRINK, 2);
vbox->pack_start (*showGreen, Gtk::PACK_SHRINK, 2);
vbox->pack_start (*showBlue, Gtk::PACK_SHRINK, 2);
vbox->pack_start (*showValue, Gtk::PACK_SHRINK, 2);
vbox->pack_end (*showRAW, Gtk::PACK_SHRINK, 2);
pack_start (*histogramArea);
pack_end (*vbox, Gtk::PACK_SHRINK, 2);
@@ -46,6 +49,7 @@ HistogramPanel::HistogramPanel () {
showGreen->signal_toggled().connect( sigc::mem_fun(*this, &HistogramPanel::rgbv_toggled) );
showBlue->signal_toggled().connect( sigc::mem_fun(*this, &HistogramPanel::rgbv_toggled) );
showValue->signal_toggled().connect( sigc::mem_fun(*this, &HistogramPanel::rgbv_toggled) );
showRAW->signal_toggled().connect( sigc::mem_fun(*this, &HistogramPanel::rgbv_toggled) );
show_all ();
@@ -53,6 +57,7 @@ HistogramPanel::HistogramPanel () {
showGreen->set_tooltip_text (M("HISTOGRAM_TOOLTIP_G"));
showBlue->set_tooltip_text (M("HISTOGRAM_TOOLTIP_B"));
showValue->set_tooltip_text (M("HISTOGRAM_TOOLTIP_L"));
showRAW->set_tooltip_text (M("HISTOGRAM_TOOLTIP_RAW"));
rconn = signal_size_allocate().connect( sigc::mem_fun(*this, &HistogramPanel::resized) );
}
@@ -72,17 +77,12 @@ void HistogramPanel::resized (Gtk::Allocation& req) {
void HistogramPanel::rgbv_toggled () {
histogramArea->updateOptions (showRed->get_active(), showGreen->get_active(), showBlue->get_active(), showValue->get_active());
histogramArea->updateOptions (showRed->get_active(), showGreen->get_active(), showBlue->get_active(), showValue->get_active(), showRAW->get_active());
histogramArea->queue_draw ();
}
HistogramArea::HistogramArea () :
valid(false), showFull(true), oldwidth(-1), needVal(true), needRed(true), needGreen(true), needBlue(true) {
lhist(256);
rhist(256);
ghist(256);
bhist(256);
valid(false), showFull(true), oldwidth(-1), needLuma(true), needRed(true), needGreen(true), needBlue(true), rawMode(false) {
haih = new HistogramAreaIdleHelper;
haih->harea = this;
@@ -101,12 +101,13 @@ HistogramArea::~HistogramArea () {
}
void HistogramArea::updateOptions (bool r, bool g, bool b, bool v) {
void HistogramArea::updateOptions (bool r, bool g, bool b, bool l, bool raw) {
needRed = r;
needGreen = g;
needBlue = b;
needVal = v;
needLuma = l;
rawMode = raw;
renderHistogram ();
}
@@ -134,13 +135,13 @@ int histupdate (void* data) {
return 0;
}
void HistogramArea::update (LUTu & rh, LUTu & gh, LUTu & bh, LUTu & lh) {
void HistogramArea::update (LUTu &histRed, LUTu &histGreen, LUTu &histBlue, LUTu &histLuma, LUTu &histRedRaw, LUTu &histGreenRaw, LUTu &histBlueRaw) {
if (rh) {
lhist=lh;
rhist=rh;
ghist=gh;
bhist=bh;
if (histRed) {
lhist=histLuma;
rhist=histRed; ghist=histGreen; bhist=histBlue;
rhistRaw=histRedRaw; ghistRaw=histGreenRaw; bhistRaw=histBlueRaw;
valid = true;
}
else
@@ -167,6 +168,10 @@ void HistogramArea::renderHistogram () {
backBuffer->draw_rectangle (bgc, true, 0, 0, winw, winh);
if (valid) {
// For RAW mode use the other hists
LUTu& rh = rawMode ? rhistRaw : rhist;
LUTu& gh = rawMode ? ghistRaw : ghist;
LUTu& bh = rawMode ? bhistRaw : bhist;
// compute height of the full histogram (realheight) and
// does not take into account 0 and 255 values
@@ -174,14 +179,14 @@ void HistogramArea::renderHistogram () {
int fullhistheight = 0;
for (int i=1; i<255; i++) {
if (needVal && lhist[i]>fullhistheight)
if (needLuma && lhist[i]>fullhistheight)
fullhistheight = lhist[i];
if (needRed && rhist[i]>fullhistheight)
fullhistheight = rhist[i];
if (needGreen && ghist[i]>fullhistheight)
fullhistheight = ghist[i];
if (needBlue && bhist[i]>fullhistheight)
fullhistheight = bhist[i];
if (needRed && (rawMode?rhistRaw:rhist)[i]>fullhistheight)
fullhistheight = rh[i];
if (needGreen && (rawMode?ghistRaw:ghist)[i]>fullhistheight)
fullhistheight = gh[i];
if (needBlue && (rawMode?bhistRaw:bhist)[i]>fullhistheight)
fullhistheight = bh[i];
}
int realhistheight = fullhistheight;
@@ -192,7 +197,7 @@ void HistogramArea::renderHistogram () {
int area = 0;
for (int i=0; i<fullhistheight; i++) {
for (int j=0; j<256; j++)
if ((needVal && lhist[j]>i) || (needRed && rhist[j]>i) || (needGreen && ghist[j]>i) || (needBlue && bhist[j]>i))
if ((needLuma && !rawMode && lhist[j]>i) || (needRed && rh[j]>i) || (needGreen && gh[j]>i) || (needBlue && bh[j]>i))
area++;
if (area1thres==0 && (double)area / (256*(i+1)) < 0.3)
area1thres = i;
@@ -214,7 +219,7 @@ void HistogramArea::renderHistogram () {
int ui = 0, oi = 0;
if (needVal) {
if (needLuma && !rawMode) {
drawCurve(cr, lhist, realhistheight, winw, winh);
cr->set_source_rgb (0.75, 0.75, 0.75);
cr->fill_preserve ();
@@ -224,162 +229,28 @@ void HistogramArea::renderHistogram () {
drawMarks(cr, lhist, realhistheight, winw, ui, oi);
}
if (needRed) {
drawCurve(cr, rhist, realhistheight, winw, winh);
drawCurve(cr, rh, realhistheight, winw, winh);
cr->set_source_rgb (1.0, 0.0, 0.0);
cr->stroke ();
drawMarks(cr, rhist, realhistheight, winw, ui, oi);
drawMarks(cr, rh, realhistheight, winw, ui, oi);
}
if (needGreen) {
drawCurve(cr, ghist, realhistheight, winw, winh);
drawCurve(cr, gh, realhistheight, winw, winh);
cr->set_source_rgb (0.0, 1.0, 0.0);
cr->stroke ();
drawMarks(cr, ghist, realhistheight, winw, ui, oi);
drawMarks(cr, gh, realhistheight, winw, ui, oi);
}
if (needBlue) {
drawCurve(cr, bhist, realhistheight, winw, winh);
drawCurve(cr, bh, realhistheight, winw, winh);
cr->set_source_rgb (0.0, 0.0, 1.0);
cr->stroke ();
drawMarks(cr, bhist, realhistheight, winw, ui, oi);
drawMarks(cr, bh, realhistheight, winw, ui, oi);
}
}
/*
// scale histogram to width winw-1
int* vval = new int[winw-1];
int* vred = new int[winw-1];
int* vgreen = new int[winw-1];
int* vblue = new int[winw-1];
memset (vval, 0, sizeof(int)*(winw-1));
memset (vred, 0, sizeof(int)*(winw-1));
memset (vgreen, 0, sizeof(int)*(winw-1));
memset (vblue, 0, sizeof(int)*(winw-1));
int index = 0;
double scale = 256.0 / (winw-2);
for (int i=0; i<=winw-2; i++) {
int samples = 0;
while (index < 256 && (int)(index/scale) == i) {
vval[i] += lhist[index];
vred[i] += rhist[index];
vgreen[i] += ghist[index];
vblue[i] += bhist[index];
index++;
samples++;
}
if (samples>0) {
vval[i] /= samples;
vred[i] /= samples;
vgreen[i] /= samples;
vblue[i] /= samples;
}
}
// compute height of the full histogram (realheight) and
int fullhistheight = 0;
for (int i=0; i<=winw-2; i++) {
if (needVal && vval[i]>fullhistheight)
fullhistheight = vval[i];
if (needRed && vred[i]>fullhistheight)
fullhistheight = vred[i];
if (needGreen && vgreen[i]>fullhistheight)
fullhistheight = vgreen[i];
if (needBlue && vblue[i]>fullhistheight)
fullhistheight = vblue[i];
}
// compute two hights, one for the magnified view and one for the threshold
int realhistheight = fullhistheight;
if (!showFull) {
int area1thres = 0;
int area2thres = 0;
int area = 0;
for (int i=0; i<fullhistheight; i++) {
for (int j=0; j<winw-1; j++)
if ((needVal && vval[j]>i) || (needRed && vred[j]>i) || (needGreen && vgreen[j]>i) || (needBlue && vblue[j]>i))
area++;
if (area1thres==0 && (double)area / ((winw-1)*(i+1)) < 0.3)
area1thres = i;
if (area2thres==0 && (double)area / ((winw-1)*(i+1)) < 0.3)
area2thres = i;
if (area1thres && area2thres)
break;
}
if (area1thres>0 && area2thres>0 && area1thres<fullhistheight)
realhistheight = area2thres;
}
if (realhistheight<winh-2)
realhistheight = winh-2;
Cairo::RefPtr<Cairo::Context> cr = backBuffer->create_cairo_context();
cr->set_antialias (Cairo::ANTIALIAS_SUBPIXEL);
cr->set_line_width (1.0);
if (needVal) {
cr->move_to (0, winh-1);
cr->set_source_rgb (0.75, 0.75, 0.75);
for (int i=0; i<=winw-2; i++) {
int val = (int)(vval[i] * (double)(winh-2) / realhistheight);
if (val>winh-1)
val = winh-1;
if (i>0)
cr->line_to (i+1, winh-1-val);
}
cr->fill_preserve ();
cr->set_source_rgb (0.5, 0.5, 0.5);
cr->stroke ();
}
if (needRed) {
cr->move_to (0, winh-1);
cr->set_source_rgb (1.0, 0.0, 0.0);
for (int i=0; i<=winw-2; i++) {
int val = (int)(vred[i] * (double)(winh-2) / realhistheight);
if (val>winh-1)
val = winh-1;
if (i>0)
cr->line_to (i+1, winh-1-val);
}
cr->stroke ();
}
if (needGreen) {
cr->move_to (0, winh-1);
cr->set_source_rgb (0.0, 1.0, 0.0);
for (int i=0; i<=winw-2; i++) {
int val = (int)(vgreen[i] * (double)(winh-2) / realhistheight);
if (val>winh-1)
val = winh-1;
if (i>0)
cr->line_to (i+1, winh-1-val);
}
cr->stroke ();
}
if (needBlue) {
cr->move_to (0, winh-1);
cr->set_source_rgb (0.0, 0.0, 1.0);
for (int i=0; i<=winw-2; i++) {
int val = (int)(vblue[i] * (double)(winh-2) / realhistheight);
if (val>winh-1)
val = winh-1;
if (i>0)
cr->line_to (i+1, winh-1-val);
}
cr->stroke ();
}
delete [] vval;
delete [] vred;
delete [] vgreen;
delete [] vblue;
}
*/
bgc->set_foreground (mgray);
backBuffer->draw_rectangle (bgc, false, 0, 0, winw-1, winh-1);