1 files changed, 147 insertions, 0 deletions
diff --git a/chalk/plugins/viewplugins/histogram/kis_histogram_widget.cpp b/chalk/plugins/viewplugins/histogram/kis_histogram_widget.cpp
new file mode 100644
index 00000000..c4983870
--- /dev/null
+++ b/chalk/plugins/viewplugins/histogram/kis_histogram_widget.cpp
@@ -0,0 +1,147 @@
+/*
+ *  Copyright (c) 2004 Boudewijn Rempt
+ *            (c) 2005 Bart Coppens <kde@bartcoppens.be>
+ *
+ *  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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ */
+
+#include <tqpainter.h>
+#include <tqpixmap.h>
+#include <tqlabel.h>
+#include <tqcombobox.h>
+#include <tqbuttongroup.h>
+#include <tqpushbutton.h>
+#include <tqscrollbar.h>
+#include <tqtooltip.h>
+
+#include <kdebug.h>
+
+#include "kis_channelinfo.h"
+#include "kis_histogram_view.h"
+#include "kis_histogram_widget.h"
+#include "kis_histogram.h"
+#include "kis_global.h"
+#include "kis_types.h"
+#include "kis_layer.h"
+#include "kis_paint_device.h"
+#include "kis_colorspace.h"
+
+
+KisHistogramWidget::KisHistogramWidget(TQWidget *parent, const char *name)
+    : super(parent, name)
+{
+    m_from = 0.0;
+    m_width = 0.0;
+}
+
+KisHistogramWidget::~KisHistogramWidget()
+{
+}
+
+void KisHistogramWidget::setPaintDevice(KisPaintDeviceSP dev)
+{
+    grpType->disconnect(this);
+    cmbChannel->disconnect(this);
+    
+    m_histogramView->setPaintDevice(dev);
+    setActiveChannel(0); // So we have the colored one if there are colors
+
+    // The channels
+    cmbChannel->clear();
+    cmbChannel->insertStringList(m_histogramView->channelStrings());
+    cmbChannel->setCurrentItem(0);
+
+    // View display
+    currentView->setMinValue(0);
+    currentView->setMaxValue(100);
+
+    updateEnabled();
+
+    m_from = m_histogramView->currentProducer()->viewFrom();
+    m_width = m_histogramView->currentProducer()->viewWidth();
+
+    connect(grpType, TQT_SIGNAL(clicked(int)), this, TQT_SLOT(slotTypeSwitched(int)));
+    connect(cmbChannel, TQT_SIGNAL(activated(int)), this, TQT_SLOT(setActiveChannel(int)));
+    connect(zoomIn, TQT_SIGNAL(clicked()), this, TQT_SLOT(slotZoomIn()));
+    connect(zoomOut, TQT_SIGNAL(clicked()), this, TQT_SLOT(slotZoomOut()));
+    connect(currentView, TQT_SIGNAL(valueChanged(int)), this, TQT_SLOT(slide(int)));
+}
+
+void KisHistogramWidget::setActiveChannel(int channel)
+{
+    m_histogramView->setActiveChannel(channel);
+    updateEnabled();
+}
+
+void KisHistogramWidget::slotTypeSwitched(int id)
+{
+    if (id == LINEAR)
+        m_histogramView->setHistogramType(LINEAR);
+    else if (id == LOGARITHMIC)
+        m_histogramView->setHistogramType(LOGARITHMIC);
+}
+
+void KisHistogramWidget::setView(double from, double size)
+{
+    m_from = from;
+    m_width = size;
+    if (m_from + m_width > 1.0)
+        m_from = 1.0 - m_width;
+    m_histogramView->setView(m_from, m_width);
+    updateEnabled();
+}
+
+void KisHistogramWidget::slotZoomIn() {
+    if ((m_width / 2) >= m_histogramView->currentProducer()->maximalZoom()) {
+        setView(m_from, m_width / 2);
+    }
+}
+
+void KisHistogramWidget::slotZoomOut() {
+    if (m_width * 2 <= 1.0) {
+        setView(m_from, m_width * 2);
+    }
+}
+
+void KisHistogramWidget::slide(int val) {
+    // Beware: at the END (e.g. 100), we want to still view m_width:
+    setView((static_cast<double>(val) / 100.0) * (1.0 - m_width), m_width);
+}
+
+void KisHistogramWidget::updateEnabled() {
+    if (m_histogramView->currentProducer()->maximalZoom() < 1.0) {
+        if ((m_width / 2) >= m_histogramView->currentProducer()->maximalZoom()) {
+            zoomIn->setEnabled(true);
+        } else {
+            zoomIn->setEnabled(false);
+        }
+        if (m_width * 2 <= 1.0) {
+            zoomOut->setEnabled(true);
+        } else {
+            zoomOut->setEnabled(false);
+        }
+        if (m_width < 1.0)
+            currentView->setEnabled(true);
+        else
+            currentView->setEnabled(false);
+    } else {
+        zoomIn->setEnabled(false);
+        zoomOut->setEnabled(false);
+        currentView->setEnabled(false);
+    }
+}
+
+#include "kis_histogram_widget.moc"
+