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CopperSpice API
1.9.2
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The QBrush class defines the fill pattern of shapes drawn by QPainter. More...
Public Methods | |
QBrush () | |
QBrush (const QBrush &other) | |
QBrush (const QColor &color, const QPixmap &pixmap) | |
QBrush (const QColor &color, Qt::BrushStyle style=Qt::SolidPattern) | |
QBrush (const QGradient &gradient) | |
QBrush (const QImage &image) | |
QBrush (const QPixmap &pixmap) | |
QBrush (Qt::BrushStyle style) | |
QBrush (Qt::GlobalColor color, const QPixmap &pixmap) | |
QBrush (Qt::GlobalColor color, Qt::BrushStyle style=Qt::SolidPattern) | |
~QBrush () | |
const QColor & | color () const |
const QGradient * | gradient () const |
bool | isOpaque () const |
const QMatrix & | matrix () const |
operator QVariant () const | |
bool | operator!= (const QBrush &brush) const |
QBrush & | operator= (const QBrush &other) |
QBrush & | operator= (QBrush &&other) |
bool | operator== (const QBrush &brush) const |
void | setColor (const QColor &color) |
void | setColor (Qt::GlobalColor color) |
void | setMatrix (const QMatrix &matrix) |
void | setStyle (Qt::BrushStyle style) |
void | setTexture (const QPixmap &pixmap) |
void | setTextureImage (const QImage &image) |
void | setTransform (const QTransform &transform) |
Qt::BrushStyle | style () const |
void | swap (QBrush &other) |
QPixmap | texture () const |
QImage | textureImage () const |
QTransform | transform () const |
Friends | |
class | QPainter |
class | QRasterPaintEngine |
Related Functions | |
These are not member functions | |
QDataStream & | operator<< (QDataStream &stream, const QBrush &brush) |
QDataStream & | operator>> (QDataStream &stream, QBrush &brush) |
The QBrush class defines the fill pattern of shapes drawn by QPainter. A brush has a style, a color, a gradient and a texture. The brush style() defines the fill pattern using the Qt::BrushStyle enum. The default brush style is Qt::NoBrush (depending on how you construct a brush). This style tells the painter to not fill shapes. The standard style for filling is Qt::SolidPattern. The style can be set when the brush is created using the appropriate constructor, and in addition the setStyle() function provides means for altering the style once the brush is constructed.
The brush color() defines the color of the fill pattern. The color can either be one of the CopperSpice predefined colors, Qt::GlobalColor, or any other custom QColor. The currently set color can be retrieved and changed using the color() and setColor() methods, respectively.
The gradient() defines the gradient fill used when the current style is either Qt::LinearGradientPattern, Qt::RadialGradientPattern or Qt::ConicalGradientPattern. Gradient brushes are created by giving a QGradient as a constructor argument when creating the QBrush. CopperSpice provides three different gradients: QLinearGradient, QConicalGradient, and QRadialGradient, all of which inherit QGradient.
The texture() defines the pixmap used when the current style is Qt::TexturePattern. You can create a brush with a texture by providing the pixmap when the brush is created or by using setTexture(). Applying setTexture() makes style() == Qt::TexturePattern, regardless of previous style settings. Calling setColor() will not make a difference if the style is a gradient. The same ->is the case if the style is Qt::TexturePattern style unless the current texture is a QBitmap.
The isOpaque() method returns true if the brush is fully opaque otherwise false. A brush is considered opaque if the following are true.
![]() | To specify the style and color of lines and outlines, use the QPainter's pen combined with Qt::PenStyle and Qt::GlobalColor: QPainter painter(this);
painter.setBrush(Qt::cyan);
painter.setPen(Qt::darkCyan);
painter.drawRect(0, 0, 100,100);
painter.setBrush(Qt::NoBrush);
painter.setPen(Qt::darkGreen);
painter.drawRect(40, 40, 100, 100);
By default, QPainter renders the outline (using the currently set pen) when drawing shapes. Use <tt>painter.setPen(Qt::NoPen)</tt> to disable this behavior. |
For more information about painting refer to the Paint System documentation.
QBrush::QBrush | ( | ) |
Constructs a default black brush with the style Qt::NoBrush (i.e. this brush will not fill shapes).
QBrush::QBrush | ( | Qt::BrushStyle | style | ) |
Constructs a black brush with the given style.
QBrush::QBrush | ( | const QColor & | color, |
Qt::BrushStyle | style = Qt::SolidPattern |
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Constructs a brush with the given color and style.
QBrush::QBrush | ( | Qt::GlobalColor | color, |
Qt::BrushStyle | style = Qt::SolidPattern |
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Constructs a brush with the given color and style.
Constructs a brush with the given color and the custom pattern stored in pixmap. The style is set to Qt::TexturePattern. The color will only have an effect for QBitmaps.
QBrush::QBrush | ( | Qt::GlobalColor | color, |
const QPixmap & | pixmap | ||
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Constructs a brush with the given color and the custom pattern stored in pixmap. The style is set to Qt::TexturePattern. The color will only have an effect for QBitmaps.
QBrush::QBrush | ( | const QPixmap & | pixmap | ) |
Constructs a brush with a black color and a texture set to the given pixmap. The style is set to Qt::TexturePattern.
QBrush::QBrush | ( | const QImage & | image | ) |
Constructs a brush with a black color and a texture set to the given image. The style is set to Qt::TexturePattern.
QBrush::QBrush | ( | const QBrush & | other | ) |
Copy constructs a new QBrush from other.
QBrush::QBrush | ( | const QGradient & | gradient | ) |
Constructs a brush based on the given gradient. The brush style is set to the corresponding gradient style (either Qt::LinearGradientPattern, Qt::RadialGradientPattern or Qt::ConicalGradientPattern).
QBrush::~QBrush | ( | ) |
Destroys the brush.
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Returns the brush color.
const QGradient * QBrush::gradient | ( | ) | const |
Returns the gradient describing this brush.
bool QBrush::isOpaque | ( | ) | const |
Returns true if the brush is fully opaque otherwise false. A brush is considered opaque if:
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Returns the current transformation matrix for the brush.
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Returns true if the brush is different from the given brush, otherwise returns false.
Two brushes are different if they have different styles, colors or transforms or different pixmaps or gradients depending on the style.
QBrush & QBrush::operator= | ( | const QBrush & | other | ) |
Copy assigns from other and returns a reference to this object.
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Move assigns from other and returns a reference to this object.
bool QBrush::operator== | ( | const QBrush & | brush | ) | const |
Returns true if the brush is equal to the given brush, otherwise returns false.
Two brushes are equal if they have equal styles, colors and transforms and equal pixmaps or gradients depending on the style.
void QBrush::setColor | ( | const QColor & | color | ) |
Sets the brush color to the given color. Calling setColor() will not make a difference if the style is a gradient. The same is the case if the style is Qt::TexturePattern style unless the current texture is a QBitmap.
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Sets the brush color to the given color.
void QBrush::setMatrix | ( | const QMatrix & | matrix | ) |
void QBrush::setStyle | ( | Qt::BrushStyle | style | ) |
Sets the brush style to style.
void QBrush::setTexture | ( | const QPixmap & | pixmap | ) |
Sets the brush pixmap to pixmap. The style is set to Qt::TexturePattern. The current brush color will only have an effect for monochrome pixmaps, i.e. for QPixmap::depth() == 1 (QBitmaps).
void QBrush::setTextureImage | ( | const QImage & | image | ) |
Sets the brush image to image. The style is set to Qt::TexturePattern.
The current brush color will not have any affect on monochrome images, as opposed to calling setTexture() with a QBitmap. If you want to change the color of monochrome image brushes, either convert the image to QBitmap with QBitmap::fromImage()
and set the resulting QBitmap as a texture, or change the entries in the color table for the image.
void QBrush::setTransform | ( | const QTransform & | transform | ) |
Sets transform as an explicit transformation matrix on the current brush. The brush transformation matrix is merged with QPainter transformation matrix to produce the final result.
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Returns the brush style.
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Swaps brush other with this brush. This operation is very fast and never fails.
QPixmap QBrush::texture | ( | ) | const |
Returns the custom brush pattern, or a null pixmap if no custom brush pattern has been set.
QImage QBrush::textureImage | ( | ) | const |
Returns the custom brush pattern, or a null image if no custom brush pattern has been set. If the texture was set as a QPixmap it will be converted to a QImage.
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Returns the current transformation matrix for the brush.
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Writes the given brush to the stream and returns a reference to the stream.
Refer to Serializing Data Types for additional information.
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Reads the given brush from the stream and returns a reference to the stream.
Refer to Serializing Data Types for additional information.