diff -r a74f2ff353b8 -r b376645315ab src/colorSelector.cc
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/colorSelector.cc	Sat Mar 29 05:26:10 2014 +0200
@@ -0,0 +1,210 @@
+/*
+ *  LDForge: LDraw parts authoring CAD
+ *  Copyright (C) 2013, 2014 Santeri Piippo
+ *
+ *  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 3 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, see <http://www.gnu.org/licenses/>.
+ *  =====================================================================
+ *
+ *  colorSelectDialog.cxx: Color selector box.
+ */
+
+#include <QGraphicsScene>
+#include <QGraphicsItem>
+#include <QMouseEvent>
+#include <QScrollBar>
+
+#include "main.h"
+#include "mainWindow.h"
+#include "colorSelector.h"
+#include "colors.h"
+#include "configuration.h"
+#include "miscallenous.h"
+#include "ui_colorsel.h"
+
+static const int g_numColumns = 16;
+static const int g_squareSize = 32;
+
+extern_cfg (String, gl_maincolor);
+extern_cfg (Float, gl_maincolor_alpha);
+
+// =============================================================================
+// =============================================================================
+ColorSelector::ColorSelector (int defval, QWidget* parent) : QDialog (parent)
+{
+	// Remove the default color if it's invalid
+	if (!getColor (defval))
+		defval = -1;
+
+	m_firstResize = true;
+	ui = new Ui_ColorSelUI;
+	ui->setupUi (this);
+
+	m_scene = new QGraphicsScene;
+	ui->viewport->setScene (m_scene);
+	setSelection (getColor (defval));
+
+	// not really an icon but eh
+	m_scene->setBackgroundBrush (getIcon ("checkerboard"));
+	drawScene();
+
+	int width = viewportWidth();
+	ui->viewport->setMinimumWidth (width);
+	ui->viewport->setMaximumWidth (width);
+
+	drawColorInfo();
+}
+
+// =============================================================================
+// =============================================================================
+ColorSelector::~ColorSelector()
+{
+	delete ui;
+}
+
+// =============================================================================
+// =============================================================================
+void ColorSelector::drawScene()
+{
+	const int numCols = g_numColumns;
+	const int square = g_squareSize;
+	const int g_maxHeight = (numRows() * square);
+	QRect sceneRect (0, 0, viewportWidth(), g_maxHeight);
+
+	m_scene->setSceneRect (sceneRect);
+	ui->viewport->setSceneRect (sceneRect);
+
+	const double penWidth = 1.0f;
+
+	// Draw the color rectangles.
+	m_scene->clear();
+
+	for (int i = 0; i < MAX_COLORS; ++i)
+	{
+		LDColor* info = ::getColor (i);
+
+		if (!info)
+			continue;
+
+		const double x = (i % numCols) * square;
+		const double y = (i / numCols) * square;
+		const double w = square - (penWidth / 2);
+
+		QColor col = info->faceColor;
+
+		if (i == maincolor)
+		{
+			// Use the user preferences for main color here
+			col = QColor (gl_maincolor);
+			col.setAlpha (gl_maincolor_alpha * 255.0f);
+		}
+
+		QPen pen (info->edgeColor, penWidth, Qt::SolidLine, Qt::FlatCap, Qt::MiterJoin);
+		m_scene->addRect (x, y, w, w, pen, col);
+		QGraphicsTextItem* numtext = m_scene->addText (format ("%1", i));
+		numtext->setDefaultTextColor ( (luma (col) < 80) ? Qt::white : Qt::black);
+		numtext->setPos (x, y);
+
+		if (selection() && i == selection()->index)
+		{
+			auto curspic = m_scene->addPixmap (getIcon ("colorcursor"));
+			curspic->setPos (x, y);
+		}
+	}
+}
+
+// =============================================================================
+// =============================================================================
+int ColorSelector::numRows() const
+{
+	return (MAX_COLORS / g_numColumns);
+}
+
+// =============================================================================
+// =============================================================================
+int ColorSelector::viewportWidth() const
+{
+	return g_numColumns * g_squareSize + 21;
+}
+
+// =============================================================================
+// =============================================================================
+void ColorSelector::drawColorInfo()
+{
+	if (!selection())
+	{
+		ui->colorLabel->setText ("---");
+		return;
+	}
+
+	ui->colorLabel->setText (format ("%1 - %2", selection()->index, selection()->name));
+}
+
+// =============================================================================
+// =============================================================================
+void ColorSelector::resizeEvent (QResizeEvent* ev)
+{
+	// If this is the first resize, check if we need to scroll down to see the
+	// currently selected color. We cannot do this in the constructor because the
+	// height is not set properly there.
+	if (m_firstResize)
+	{
+		int visibleColors = (ui->viewport->height() / g_squareSize) * g_numColumns;
+
+		if (selection() && selection()->index >= visibleColors)
+		{
+			int y = (selection()->index / g_numColumns) * g_squareSize;
+			ui->viewport->verticalScrollBar()->setValue (y);
+		}
+
+		m_firstResize = false;
+	}
+
+	(void) ev;
+	drawScene();
+}
+
+// =============================================================================
+// =============================================================================
+void ColorSelector::mousePressEvent (QMouseEvent* event)
+{
+	QPointF scenepos = ui->viewport->mapToScene (event->pos());
+
+	int x = (scenepos.x() - (g_squareSize / 2)) / g_squareSize;
+	int y = (scenepos.y() - (g_squareSize / 2)) / g_squareSize;
+	int idx = (y * g_numColumns) + x;
+
+	LDColor* col = ::getColor (idx);
+
+	if (!col)
+		return;
+
+	setSelection (col);
+	drawScene();
+	drawColorInfo();
+}
+
+// =============================================================================
+// =============================================================================
+bool ColorSelector::selectColor (int& val, int defval, QWidget* parent)
+{
+	ColorSelector dlg (defval, parent);
+
+	if (dlg.exec() && dlg.selection() != null)
+	{
+		val = dlg.selection()->index;
+		return true;
+	}
+
+	return false;
+}
\ No newline at end of file