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Fixed slider painting, part I

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This commit is contained in:
chris
2026-03-29 16:35:58 +02:00
parent 2192910e8e
commit c8a088173f
4 changed files with 15 additions and 212 deletions
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2
bcvaluedelegate.cpp
View File

@@ -147,7 +147,7 @@ void BCValueDelegate::paintPlainSliderIndicator(QPainter* painter, const QRect&
{
QRect sliderRect = BCValueSlider::updateEditorRect( rect );
qDebug() << " --- Paint SLIDER ";
BCValueSlider::paintSliderIndicator2(painter, sliderRect, ratio );
BCValueSlider::paintSliderIndicator(painter, sliderRect, ratio );
}
void BCValueDelegate::paintHighlightRow(QPainter* painter, const QStyleOptionViewItem& option, int row) const

57
bcvalueslider.cpp
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@@ -101,49 +101,22 @@ QRect BCValueSlider::updateEditorRect( const QRect& rect)
void BCValueSlider::paintSliderIndicator(QPainter* painter, const QRect& rect, double ratio )
{
return;
// Kleinen Slider-Indikator zeichnen
painter->save();
painter->setRenderHint(QPainter::Antialiasing);
int adjX = rect.width() - 130; //cTextBlockOffset;
// Mini Progress Bar: der Gesamtbereich
QRect barRect = rect.adjusted( adjX, 12, -10-24, -12 );
painter->setPen(Qt::NoPen);
painter->setBrush(QColor(0xE0E0E0));
painter->drawRoundedRect(barRect, 2, 2);
qDebug() << " --- doPaint: in paintSliderIndicator1: " << rect;
qDebug() << " --- doPaint: in paintSliderIndicator2: " << barRect;
// Mini Progress Bar: der Wertebereich
barRect.setWidth( ratio * barRect.width() );
painter->setBrush(QColor(0x0078D4));
painter->drawRoundedRect(barRect, 2, 2);
painter->restore();
}
void BCValueSlider::paintSliderIndicator2(QPainter* painter, const QRect& rect, double ratio )
{
// Kleinen Slider-Indikator zeichnen
painter->save();
painter->setRenderHint(QPainter::Antialiasing);
qDebug() << " --- doPaint: in paintSliderIndicator: " <<rect;
QRect barRect = rect.adjusted( 0, 5, 0, -5 );
/*
// Mini Progress Bar: der Gesamtbereich
//QRect barRect = rect.adjusted( 0, 12, -10-24, -12 );
QRect barRect = rect;//.adjusted( 0, 12, 0, -12 );
QRect barRect2 = rect;//.adjusted( 0, 12, 0, -12 );
const int third = rect.height() / 3;
barRect.setY( rect.y() + third);
barRect.setHeight( third );
qDebug() << " --- doPaint: " << third << " rect:" << rect << " adj: " << barRect << " 2:" << barRect2;
// Mini Progress Bar: der Gesamtbereich
painter->setPen(Qt::NoPen);
painter->setBrush(QColor(0xE0E0E0));
painter->drawRoundedRect(barRect, 2, 2);
@@ -152,14 +125,10 @@ void BCValueSlider::paintSliderIndicator2(QPainter* painter, const QRect& rect,
barRect.setWidth( ratio * barRect.width() );
painter->setBrush(QColor(0x0078D4));
painter->drawRoundedRect(barRect, 2, 2);
*/
BCValueSlider::updateEditorRect( rect );
painter->setBrush(Qt::gray);
painter->drawRoundedRect(rect, 2, 2);
painter->setBrush(Qt::blue);
painter->drawRoundedRect(barRect, 2, 2);
//painter->setPen(Qt::red);
//painter->setBrush(Qt::blue);
//painter->drawRoundedRect(barRect, 2, 2);
painter->restore();
}
@@ -250,7 +219,7 @@ void BCValueSlider::BCValueSliderStyle::drawHorizontalFluentSlider(QPainter* pai
handleRect.setY( handleRect.y() + 2 );
qDebug() << " --- doPaint: drawHorizontalFluentSlider" << groove << " Handle: " << handleRect;
paintSliderIndicator2(painter, groove, 0.5 );
paintSliderIndicator(painter, groove, 0.5 );
painter->setBrush(Qt::red);
painter->drawRect(handleRect);

4
bcvalueslider.h
View File

@@ -28,9 +28,7 @@ public:
// helper functions
static QRect updateEditorRect( const QRect& rect);
static void paintSliderIndicator(QPainter* painter, const QRect& rect, double ratio );
static void paintSliderIndicator2(QPainter* painter, const QRect& rect, double ratio );
static void paintSliderIndicator(QPainter* painter, const QRect& rect, double ratio );
signals:

164
main.cpp
View File

@@ -39,174 +39,10 @@
#include <bcmainwindow.h>
/*
#ifdef _WIN32
#include <stdlib.h> // Stellt sicher, dass die Makros __argc und __argv bekannt sind
extern "C" {
// Wir definieren die fehlenden Import-Pointer manuell und
// leiten sie auf die echten Variablen der neuen MinGW-Laufzeitumgebung um.
int* __imp___argc = &__argc;
char*** __imp___argv = &__argv;
}
#endif
*/
/*
// Intermediäre CRTP-Schicht übernimmt die generische Implementierung
template <typename Derived, typename Base>
struct cloneable : public Base
{
Derived* clone() override
{
return new Derived(static_cast<Derived const&>(*this));
}
};
// Base bleibt sauber – nur pure virtual
struct base
{
virtual base* clone() = 0;
virtual void moo() const = 0;
virtual ~base() = default;
};
// Abgeleitete Klassen erben clone() automatisch
struct derived1 : public cloneable<derived1, base>
{
void moo() const override { qDebug() << " -- derived1 moo"; }
};
struct derived2 : public cloneable<derived2, base>
{
void moo() const override { qDebug() << " -- derived2 moo"; }
};
*/
// ---
/*
struct base
{
virtual base* clone() = 0;
virtual void moo() const = 0;
virtual ~base() = default;
};
// CRTP-Schicht
template <typename Derived, typename Base>
struct cloneable : public Base
{
Base* clone() override // Base* statt Derived*
{
return new Derived(static_cast<Derived const&>(*this));
}
};
*/
/*
// Der Rückgabetyp wird exakt nach deinen Vorgaben zur Kompilierzeit ermittelt
template <typename Self>
auto makeD3(this Self&& self) -> std::conditional_t<
std::is_const_v<std::remove_reference_t<Self>>,
const derived3&,
derived3&>
{
// Da der Rückgabetyp in der Signatur festgeschrieben ist,
// reicht ein einfaches return. Der Compiler bindet die Referenz automatisch korrekt.
return self;
}
- 2. Der CRTP-Klon-Automatismus
- Das NVI-Pattern (Non-Virtual Interface) in Kombination mit CRTP ist eine der elegantesten Architekturen im modernen C++, um dieses Problem zu lösen.
*/
/*
// Abgeleitete Klassen erben clone() automatisch
struct derived1 //: public cloneable<derived1, base>
{
// Eine einzige Methode für beide Value Categories
auto& nimmMich(this auto& self)
{
return self;
}
};
struct derived2 : public cloneable<derived2, base>
{
void moo() const override { qDebug() << " -- derived2 moo"; }
void mooDerived2() const { qDebug() << " -- derived2 moo"; }
void machWasKonstantes() const
{
const derived1& d3 = d1.nimmMich();
}
void machWasSchmutziges()
{
derived1& d3 = d1.nimmMich();
}
private:
derived1 d1;
};
struct derived3 : public cloneable<derived3, base>
{
void moo() const override { qDebug() << " -- derived3 moo"; }
derived3* clone() override // Base* statt Derived*
{
return new derived3;
}
derived2 m_myD2;
};
*/
/*
Das NVI-Pattern (Non-Virtual Interface) in Kombination mit CRTP ist eine der elegantesten Architekturen
im modernen C++, um dieses Problem zu lösen. Der Trick dabei beruht auf einer C++-Eigenheit: Die Sprache unterstützt "Kovarianz"
(Covariant Return Types) nativ nur bei rohen Zeigern und Referenzen, nicht aber bei Templates wie std::unique_ptr.
*/
int main(int argc, char *argv[])
{
qDebug() << "Starting NtxNode XML Test Suite...";
/*
derived2 myDerived2;
base& d2 = *myDerived2.clone();
d2.moo();
derived3 myDerived3;
derived3& d3 = *myDerived3.clone();
d3.moo();
return 0;
*/
QApplication app(argc, argv);