QwtAlphaColorMap(3)

💖 NAME 💖

Okay bestie, welcome to QwtAlphaColorMap(3) from the Library Functions Manual — this is the page for QwtAlphaColorMap, and the whole serve is: QwtAlphaColorMap varies the alpha value of a color. No cap, that's the vibe. 💅

✨ SYNOPSIS ✨

The entry ritual, exactly as printed:

#include <qwt_color_map.h>

Inherits QwtColorMap.

🌟 Public Member Functions (main-character lineup) 🌟

• QwtAlphaColorMap (const QColor &=QColor(Qt::gray)) — Constructor.
• virtual ~QwtAlphaColorMap () — Destructor.
• void setAlphaInterval (int alpha1, int alpha2) — the alpha interval setter, listed right here.
• int alpha1 () const — alpha coordinate number one getter.
• int alpha2 () const — alpha coordinate number two getter.
• void setColor (const QColor &) — the color setter.
• QColor color () const — the color getter.
• virtual QRgb rgb (const QwtInterval &, double value) const override — Map a value of a given interval into a alpha value.

🌈 Public Member Functions inherited from QwtColorMap 🌈

• QwtColorMap (Format=QwtColorMap::RGB) — Constructor.
• virtual ~QwtColorMap () — Destructor.
• void setFormat (Format) — format setter, listed as-is.
• virtual uint colorIndex (int numColors, const QwtInterval &interval, double value) const — Map a value of a given interval into a color index.
• QColor color (const QwtInterval &, double value) const — color lookup, listed as-is.
• virtual QVector< QRgb > colorTable (int numColors) const — color table, listed as-is.
• virtual QVector< QRgb > colorTable256 () const — the 256-entry color table, listed as-is.

🫶 Additional Inherited Members 🫶

💜 Public Types inherited from QwtColorMap 💜

• enum Format { RGB, Indexed }

🎀 Public Attributes inherited from QwtColorMap 🎀

• Format const

🦋 DETAILED DESCRIPTION 🦋

So like, QwtAlphaColorMap varies the alpha value of a color. That's the whole aesthetic. Definition at line 147 of file qwt_color_map.h.

🎀 CONSTRUCTOR & DESTRUCTOR DOCUMENTATION 🎀

💖 QwtAlphaColorMap::QwtAlphaColorMap (const QColor & color = QColor( Qt::gray )) [explicit] 💖

Constructor. The alpha interval is initialized by 0 to 255.

• Parameters:
  • color — Color of the map
• See also: setColor(), setAlphaInterval()

Definition at line 539 of file qwt_color_map.cpp.

🫶 QwtAlphaColorMap::~QwtAlphaColorMap () [virtual] 🫶

Destructor.

Definition at line 547 of file qwt_color_map.cpp.

💅 MEMBER FUNCTION DOCUMENTATION 💅

⭐ int QwtAlphaColorMap::alpha1 () const ⭐

• Returns: First alpha coordinate
• See also: setAlphaInterval()

Definition at line 600 of file qwt_color_map.cpp.

⭐ int QwtAlphaColorMap::alpha2 () const ⭐

• Returns: Second alpha coordinate
• See also: setAlphaInterval()

Definition at line 609 of file qwt_color_map.cpp.

🎨 QColor QwtAlphaColorMap::color () const 🎨

• Returns: the color
• See also: setColor()

Definition at line 571 of file qwt_color_map.cpp.

🔥 QRgb QwtAlphaColorMap::rgb (const QwtInterval & interval, double value) const [override], [virtual] 🔥

Map a value of a given interval into a alpha value.

• Parameters:
  • interval — Range for all values
  • value — Value to map into a RGB value
• Returns: RGB value, with an alpha value
• Implements: QwtColorMap.

Definition at line 622 of file qwt_color_map.cpp.

💜 void QwtAlphaColorMap::setAlphaInterval (int alpha1, int alpha2) 💜

Set the interval for the alpha coordinate.

alpha1/alpha2 need to be in the range 0 to 255, where 255 means opaque and 0 means transparent.

💀 bestie, that range is not a suggestion — alpha1/alpha2 need to be in the range 0 to 255, where 255 means opaque and 0 means transparent. Periodt.

• Parameters:
  • alpha1 — First alpha coordinate
  • alpha2 — Second alpha coordinate
• See also: alpha1(), alpha2()

Definition at line 587 of file qwt_color_map.cpp.

🌸 void QwtAlphaColorMap::setColor (const QColor & color) 🌸

Set the color.

• Parameters:
  • color — Color
• See also: color()

Definition at line 558 of file qwt_color_map.cpp.

🌸 AUTHOR 🌸

Generated automatically by Doxygen for Qwt User's Guide from the source code.

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💖 xoxo, your Qwt User's Guide bestie — footer check: source/version is Qwt User's Guide, the page is QwtAlphaColorMap(3), and the date slot is literally not printed here, so that's the whole tea 🫶✨