Dark Road. (WTF)

1 files changed, 433 insertions, 0 deletions

diff --git a/qdialskulpturestyle.cpp b/qdialskulpturestyle.cpp
new file mode 100644
index 0000000..e7be93b
--- /dev/null
+++ b/qdialskulpturestyle.cpp
@@ -0,0 +1,433 @@
+/******************************************************************************
+
+   Skulpture - Classical Three-Dimensional Artwork for Qt 4
+
+   Copyright (c) 2007-2009 Christoph Feck <christoph@maxiom.de>
+
+   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 <cmath>
+#include <QStyleOptionSlider>
+#include <QPixmapCache>
+#include <QPainter>
+
+#include "qdialskulpturestyle.hpp"
+
+static const bool UsePixmapCache = true;
+
+static void
+paintIndicatorCached(QPainter *painter, const QStyleOption *option, void (*paintIndicator)(QPainter *painter, const QStyleOption *option), bool useCache, const QString &pixmapName)
+{
+	QPixmap pixmap;
+
+	if (!useCache || !QPixmapCache::find(pixmapName, pixmap)) {
+		pixmap =  QPixmap(option->rect.size());
+#if 1
+		pixmap.fill(Qt::transparent);
+	//  pixmap.fill(Qt::red);
+#else
+		pixmap.fill(option->palette.color(QPalette::Window));
+#endif
+		QPainter p(&pixmap);
+		QStyleOption opt = *option;
+		opt.rect = QRect(QPoint(0, 0), option->rect.size());
+	//  p.setCompositionMode(QPainter::CompositionMode_Clear);
+	//  p.setCompositionMode(QPainter::CompositionMode_Source);
+	//  p.fillRect(opt.rect, Qt::transparent);
+	//  p.setCompositionMode(QPainter::CompositionMode_SourceOver);
+		p.setFont(painter->font());
+		p.setRenderHint(QPainter::Antialiasing, true);
+		paintIndicator(&p, &opt);
+		p.end();
+		if (useCache) {
+			QPixmapCache::insert(pixmapName, pixmap);
+		//  qDebug() << "inserted into cache:" << pixmapName;
+		}
+	}
+	painter->drawPixmap(option->rect, pixmap);
+}
+
+void
+paintDialBase(QPainter *painter, const QStyleOption *option)
+{
+//  painter->fillRect(option->rect, Qt::red);
+//  painter->save();
+//  painter->setRenderHint(QPainter::Antialiasing, true);
+	int d = qMin(option->rect.width(), option->rect.height());
+/*  if (d > 20 && option->notchTarget > 0) {
+		d += -1;
+	}
+*/  QRectF r((option->rect.width() - d) / 2.0, (option->rect.height() - d) / 2.0, d, d);
+	const qreal angle = option->direction == Qt::LeftToRight ? 135.0 : 45.0;
+//  const qreal angle = 90;
+
+	painter->setPen(Qt::NoPen);
+	QColor border_color = option->palette.color(QPalette::Window);
+#if 0
+	{
+		QRadialGradient depth_gradient(r.center(), d / 2);
+//      depth_gradient.setColorAt(0.0, QColor(0, 0, 0, 255));
+		depth_gradient.setColorAt(0.5, QColor(0, 0, 0, 255));
+		depth_gradient.setColorAt(1.0, QColor(0, 0, 0, 0));
+		painter->setBrush(depth_gradient);
+		painter->drawEllipse(r);
+	}
+#endif
+#if 1
+	if (option->state & QStyle::State_HasFocus && option->state & QStyle::State_KeyboardFocusChange) {
+		painter->setBrush(option->palette.color(QPalette::Highlight).darker(180));
+		r.adjust(1, 1, -1, -1);
+		painter->drawEllipse(r);
+		painter->setBrush(border_color);
+		r.adjust(1, 1, -1, -1);
+		painter->drawEllipse(r);
+		r.adjust(1, 1, -1, -1);
+	} else {
+		painter->setBrush(border_color);
+		r.adjust(1, 1, -1, -1);
+		painter->drawEllipse(r);
+		r.adjust(1, 1, -1, -1);
+		QConicalGradient border_gradient(r.center(), angle);
+		if (!(option->state & QStyle::State_Enabled)) {
+			border_color = border_color.lighter(120);
+		}
+		border_gradient.setColorAt(0.0, border_color.darker(180));
+		border_gradient.setColorAt(0.3, border_color.darker(130));
+		border_gradient.setColorAt(0.5, border_color.darker(170));
+		border_gradient.setColorAt(0.7, border_color.darker(130));
+		border_gradient.setColorAt(1.0, border_color.darker(180));
+		painter->setBrush(border_gradient);
+//      painter->setBrush(Qt::blue);
+		painter->drawEllipse(r);
+		r.adjust(1, 1, -1, -1);
+	}
+	d -= 6;
+
+	QColor dial_color;
+	if (option->state & QStyle::State_Enabled) {
+		dial_color = option->palette.color(QPalette::Button).lighter(101);
+		if (option->state & QStyle::State_MouseOver) {
+			dial_color = dial_color.lighter(103);
+		}
+	} else {
+		dial_color = option->palette.color(QPalette::Window);
+	}
+	qreal t = option->state & QStyle::State_Enabled ? 2.0 : 1.5;
+	if (1) {
+		// ###: work around Qt 4.3.0 bug? (this works for 4.3.1)
+		QConicalGradient border_gradient(r.center(), angle);
+		border_gradient.setColorAt(0.0, dial_color.lighter(120));
+		border_gradient.setColorAt(0.2, dial_color);
+		border_gradient.setColorAt(0.5, dial_color.darker(130));
+		border_gradient.setColorAt(0.8, dial_color);
+		border_gradient.setColorAt(1.0, dial_color.lighter(120));
+		painter->setPen(QPen(border_gradient, t));
+	} else {
+		painter->setPen(QPen(Qt::red, t));
+	}
+#if 0
+	QLinearGradient dial_gradient(r.topLeft(), r.bottomLeft());
+	dial_gradient.setColorAt(0.0, dial_color.darker(105));
+	dial_gradient.setColorAt(0.5, dial_color.lighter(102));
+	dial_gradient.setColorAt(1.0, dial_color.lighter(105));
+#elif 1
+			  QLinearGradient dial_gradient(option->direction == Qt::LeftToRight ? r.topLeft() : r.topRight(), option->direction == Qt::LeftToRight ? r.bottomRight() : r.bottomLeft());
+//  QLinearGradient dial_gradient(r.topLeft(), r.bottomLeft());
+	if (true || option->state & QStyle::State_Enabled) {
+#if 1
+		dial_gradient.setColorAt(0.0, dial_color.darker(106));
+		dial_gradient.setColorAt(1.0, dial_color.lighter(104));
+#else
+		dial_gradient.setColorAt(0.0, dial_color.lighter(101));
+		dial_gradient.setColorAt(0.5, dial_color.darker(103));
+		dial_gradient.setColorAt(1.0, dial_color.lighter(104));
+#endif
+	} else {
+		dial_gradient.setColorAt(0.0, dial_color);
+		dial_gradient.setColorAt(1.0, dial_color);
+	}
+#elif 0
+	QConicalGradient dial_gradient(r.center(), angle);
+	dial_gradient.setColorAt(0.0, dial_color.lighter(102));
+	dial_gradient.setColorAt(0.5, dial_color.darker(103));
+	dial_gradient.setColorAt(1.0, dial_color.lighter(102));
+#else
+	QBrush dial_gradient(dial_color);
+#endif
+	painter->setBrush(dial_gradient);
+	t = t / 2;
+	painter->drawEllipse(r.adjusted(t, t, -t, -t));
+
+//  painter->setPen(Qt::NoPen);
+//  painter->setBrush(dial_color);
+//  painter->drawEllipse(r.adjusted(d / 4, d / 4, - d / 4, - d / 4));
+
+#if 0
+	QLinearGradient border2_gradient(r.topLeft(), r.bottomRight());
+	border2_gradient.setColorAt(1.0, dial_color.darker(425));
+	border2_gradient.setColorAt(0.9, dial_color);
+	border2_gradient.setColorAt(0.0, dial_color.darker(400));
+	painter->setPen(QPen(border2_gradient, 1.3));
+	painter->setBrush(Qt::NoBrush);
+	painter->drawEllipse(r.adjusted(0.3, 0.3, -0.3, -0.3));
+#endif
+//  painter->restore();
+#endif
+}
+
+void
+paintCachedDialBase(QPainter *painter, const QStyleOptionSlider *option)
+{
+	bool useCache = UsePixmapCache;
+	QString pixmapName;
+	QRect r = option->rect;
+	int d = qMin(r.width(), r.height());
+
+	if (/* option->state & (QStyle::State_HasFocus | QStyle::State_MouseOver) ||*/ d > 128) {
+		useCache = false;
+	}
+	if (useCache) {
+		uint state = uint(option->state) & (QStyle::State_Enabled | QStyle::State_On | QStyle::State_MouseOver | QStyle::State_KeyboardFocusChange | QStyle::State_HasFocus);
+		if (!(state & QStyle::State_Enabled)) {
+			state &= ~(QStyle::State_MouseOver | QStyle::State_HasFocus | QStyle::State_KeyboardFocusChange);
+		}
+	//  state &= ~(QStyle::State_HasFocus);
+		pixmapName.sprintf("scp-qdb-%x-%x-%llx-%x", state, option->direction, option->palette.cacheKey(), d);
+	}
+	paintIndicatorCached(painter, option, paintDialBase, useCache, pixmapName);
+}
+
+void
+paintIndicatorDial(QPainter *painter, const QStyleOptionSlider *option)
+{
+	int d = qMin(option->rect.width(), option->rect.height());
+	QRect rect(option->rect.center() - QPoint((d - 1) / 2, (d - 1) / 2), QSize(d, d));
+	QStyleOptionSlider opt;
+	opt.QStyleOption::operator=(*option);
+	opt.rect = rect;
+	paintCachedDialBase(painter, &opt);
+}
+
+QColor
+shaded_color(const QColor &color, int shade)
+{
+#if 1
+	const qreal contrast = 1.0;
+	int r, g, b;
+	color.getRgb(&r, &g, &b);
+	int gray = qGray(r, g, b);
+	gray = qMax(r, qMax(g, b));
+	gray = (r + b + g + 3 * gray) / 6;
+	if (shade < 0) {
+		qreal k = 220.0 / 255.0 * shade;
+		k *= contrast;
+		int a = 255;
+		if (gray > 0) {
+			a = int(k * 255 / (0 - gray));
+			if (a < 0) a = 0;
+			if (a > 255) a = 255;
+		}
+		return QColor(0, 0, 0, a);
+	} else {
+		qreal k = (255 - 220.0) / (255.0) * shade;
+		k *= contrast;
+		int a = 255;
+		if (gray < 255) {
+			a = int(k * 255 / (255 - gray));
+			if (a < 0) a = 0;
+			if (a > 255) a = 255;
+		}
+		return QColor(255, 255, 255, a);
+	}
+#else
+	if (shade < 0) {
+		return QColor(0, 0, 0, -shade);
+	} else {
+		return QColor(255, 255, 255, shade);
+	}
+#endif
+}
+
+static void
+paintGrip(QPainter *painter, const QStyleOption *option)
+{
+//  painter->fillRect(option->rect, Qt::red);
+	int d = qMin(option->rect.width(), option->rect.height());
+	// good values are 3 (very small), 4 (small), 5 (good), 7 (large), 9 (huge)
+	// int d = 5;
+	QRectF rect(QRectF(option->rect).center() - QPointF(d / 2.0, d / 2.0), QSizeF(d, d));
+	const qreal angle = option->direction == Qt::LeftToRight ? 135.0 : 45.0;
+//  const qreal angle = 90;
+	QColor color;
+		qreal opacity = 0.9;
+
+	painter->save();
+	painter->setPen(Qt::NoPen);
+	if (option->state & QStyle::State_Enabled) {
+		if (option->state & QStyle::State_Sunken) {
+			color = option->palette.color(QPalette::Highlight).darker(110);
+		} else {
+			color = option->palette.color(QPalette::Button);
+		}
+	} else {
+		color = option->palette.color(QPalette::Button);
+		opacity = 0.5;
+	}
+
+	QConicalGradient gradient1(rect.center(), angle);
+	gradient1.setColorAt(0.0, shaded_color(color, -110));
+	gradient1.setColorAt(0.25, shaded_color(color, -30));
+	gradient1.setColorAt(0.5, shaded_color(color, 180));
+	gradient1.setColorAt(0.75, shaded_color(color, -30));
+	gradient1.setColorAt(1.0, shaded_color(color, -110));
+	painter->setBrush(color);
+	painter->drawEllipse(rect);
+	painter->setBrush(gradient1);
+#if (QT_VERSION >= QT_VERSION_CHECK(4, 2, 0))
+		// ### merge opacity into color
+		painter->setOpacity(opacity);
+#endif
+	painter->drawEllipse(rect);
+#if (QT_VERSION >= QT_VERSION_CHECK(4, 2, 0))
+		painter->setOpacity(1.0);
+	if (d > 2) {
+		QConicalGradient gradient2(rect.center(), angle);
+		gradient2.setColorAt(0.0, shaded_color(color, -40));
+		gradient2.setColorAt(0.25, shaded_color(color, 0));
+		gradient2.setColorAt(0.5, shaded_color(color, 210));
+		gradient2.setColorAt(0.75, shaded_color(color, 0));
+		gradient2.setColorAt(1.0, shaded_color(color, -40));
+		rect.adjust(1, 1, -1, -1);
+		painter->setBrush(color);
+		painter->drawEllipse(rect);
+		painter->setBrush(gradient2);
+		painter->setOpacity(opacity);
+		painter->drawEllipse(rect);
+		painter->setOpacity(1.0);
+		if (d > 8) {
+			QConicalGradient gradient3(rect.center(), angle);
+			gradient3.setColorAt(0.0, shaded_color(color, -10));
+			gradient3.setColorAt(0.25, shaded_color(color, 0));
+			gradient3.setColorAt(0.5, shaded_color(color, 180));
+			gradient3.setColorAt(0.75, shaded_color(color, 0));
+			gradient3.setColorAt(1.0, shaded_color(color, -10));
+			rect.adjust(2, 2, -2, -2);
+			painter->setBrush(color);
+			painter->drawEllipse(rect);
+			painter->setBrush(gradient3);
+			painter->setOpacity(opacity);
+			painter->drawEllipse(rect);
+			painter->setOpacity(1.0);
+		}
+	}
+#endif
+	painter->restore();
+}
+
+void
+paintCachedGrip(QPainter *painter, const QStyleOption *option, QPalette::ColorRole /*bgrole*/)
+{
+	bool useCache = UsePixmapCache;
+	QString pixmapName;
+
+	if (/* option->state & (QStyle::State_HasFocus | QStyle::State_MouseOver) ||*/ option->rect.width() * option->rect.height() > 4096) {
+		useCache = false;
+	}
+	if (useCache) {
+		uint state = uint(option->state) & (QStyle::State_Enabled | QStyle::State_On | QStyle::State_MouseOver | QStyle::State_Sunken | QStyle::State_HasFocus);
+		if (!(state & QStyle::State_Enabled)) {
+			state &= ~(QStyle::State_MouseOver | QStyle::State_HasFocus);
+		}
+		state &= ~(QStyle::State_HasFocus);
+				QByteArray colorName = option->palette.color(QPalette::Button).name().toLatin1();
+				pixmapName.sprintf("scp-isg-%x-%x-%s-%x-%x", state, option->direction, colorName.constData(), option->rect.width(), option->rect.height());
+	}
+	paintIndicatorCached(painter, option, paintGrip, useCache, pixmapName);
+}
+
+void
+QDialSkulptureStyle::drawComplexControl( ComplexControl cc,
+											  const QStyleOptionComplex *optc,
+											  QPainter *painter,
+											  const QWidget *widget) const
+{
+
+	if (cc != QStyle::CC_Dial) {
+		QCommonStyle::drawComplexControl(cc, optc, painter, widget);
+		return;
+	}
+
+	const QStyleOptionSlider *option = qstyleoption_cast<const QStyleOptionSlider *>(optc);
+	if (option == NULL)
+		return;
+
+	int d = qMin(option->rect.width() & ~1, option->rect.height() & ~1);
+	QStyleOptionSlider opt = *option;
+	const QAbstractSlider *slider = NULL;
+	// always highlight knob if pressed (even if mouse is not over knob)
+	if ((option->state & QStyle::State_HasFocus) && (slider = qobject_cast<const QAbstractSlider *>(widget))) {
+		if (slider->isSliderDown()) {
+			opt.state |= QStyle::State_MouseOver;
+		}
+	}
+
+	// tickmarks
+	opt.palette.setColor(QPalette::Inactive, QPalette::WindowText, QColor(80, 80, 80, 255));
+	opt.palette.setColor(QPalette::Active, QPalette::WindowText, QColor(80, 80, 80, 255));
+	opt.state &= ~QStyle::State_HasFocus;
+	opt.rect.setWidth(opt.rect.width() & ~1);
+	opt.rect.setHeight(opt.rect.height() & ~1);
+	//((QCommonStyle *) this)->
+	QCommonStyle::drawComplexControl(QStyle::CC_Dial, &opt, painter, widget);
+
+	// focus rectangle
+	if (option->state & QStyle::State_HasFocus) {
+		QStyleOptionFocusRect focus;
+		opt.state |= QStyle::State_HasFocus;
+		focus.QStyleOption::operator=(opt);
+		focus.rect.adjust(-1, -1, 1, 1);
+		//drawPrimitive(QStyle::PE_FrameFocusRect, &focus, painter, widget);
+	}
+	opt.palette = option->palette;
+
+	// dial base
+	if (d <= 256) {
+		paintIndicatorDial(painter, &opt);
+	} else {
+		// large dials are slow to render, do not render them
+	}
+
+	// dial knob
+	d -= 6;
+	int gripSize = (option->fontMetrics.height() / 4) * 2 - 1;
+	opt.rect.setSize(QSize(gripSize, gripSize));
+	opt.rect.moveCenter(option->rect.center());
+	// angle calculation from qcommonstyle.cpp (c) Trolltech 1992-2007, ASA.
+	qreal angle;
+	int sliderPosition = option->upsideDown ? option->sliderPosition : (option->maximum - option->sliderPosition);
+	int range = option->maximum - option->minimum;
+	if (!range) {
+		angle = M_PI / 2;
+	} else if (option->dialWrapping) {
+		angle = M_PI * 1.5 - (sliderPosition - option->minimum) * 2 * M_PI / range;
+	} else {
+		angle = (M_PI * 8 - (sliderPosition - option->minimum) * 10 * M_PI / range) / 6;
+	}
+
+	qreal rr = d / 2.0 - gripSize - 2;
+	opt.rect.translate(int(0.5 + rr * cos(angle)), int(0.5 - rr * sin(angle)));
+	paintCachedGrip(painter, &opt, option->state & QStyle::State_Enabled ? QPalette::Button : QPalette::Window);
+}