17 #ifndef QGSPAINTEFFECT_H
18 #define QGSPAINTEFFECT_H
20 #include "qgis_core.h"
23 #include <QDomDocument>
24 #include <QDomElement>
56 if ( sipCpp->type() ==
"drawSource" &&
dynamic_cast<QgsDrawSourceEffect *
>( sipCpp ) != NULL )
58 sipType = sipType_QgsDrawSourceEffect;
60 else if ( sipCpp->type() ==
"effectStack" &&
dynamic_cast<QgsEffectStack *
>( sipCpp ) != NULL )
62 sipType = sipType_QgsEffectStack;
64 else if ( sipCpp->type() ==
"blur" &&
dynamic_cast<QgsBlurEffect *
>( sipCpp ) != NULL )
66 sipType = sipType_QgsBlurEffect;
68 else if ( sipCpp->type() ==
"dropShadow" &&
dynamic_cast<QgsDropShadowEffect *
>( sipCpp ) != NULL )
70 sipType = sipType_QgsDropShadowEffect;
72 else if ( sipCpp->type() ==
"outerGlow" &&
dynamic_cast<QgsOuterGlowEffect *
>( sipCpp ) != NULL )
74 sipType = sipType_QgsOuterGlowEffect;
76 else if ( sipCpp->type() ==
"innerGlow" &&
dynamic_cast<QgsInnerGlowEffect *
>( sipCpp ) != NULL )
78 sipType = sipType_QgsInnerGlowEffect;
80 else if ( sipCpp->type() ==
"transform" &&
dynamic_cast<QgsTransformEffect *
>( sipCpp ) != NULL )
82 sipType = sipType_QgsTransformEffect;
84 else if ( sipCpp->type() ==
"color" &&
dynamic_cast<QgsColorEffect *
>( sipCpp ) != NULL )
86 sipType = sipType_QgsColorEffect;
121 virtual QString
type()
const = 0;
155 virtual bool saveProperties( QDomDocument &doc, QDomElement &element )
const;
163 virtual bool readProperties(
const QDomElement &element );
203 void setEnabled(
bool enabled );
219 void setDrawMode( DrawMode drawMode );
223 bool mEnabled =
true;
225 bool requiresQPainterDpiFix =
true;
243 void drawSource( QPainter &painter );
252 const QPicture *
source()
const {
return mPicture; }
285 virtual QRectF boundingRect(
const QRectF &rect,
const QgsRenderContext &context )
const;
293 void fixQPictureDpi( QPainter *painter )
const;
297 const QPicture *mPicture =
nullptr;
298 QImage *mSourceImage =
nullptr;
299 bool mOwnsImage =
false;
301 QPainter *mPrevPainter =
nullptr;
302 QPainter *mEffectPainter =
nullptr;
303 QPicture *mTempPicture =
nullptr;
339 QString
type()
const override {
return QStringLiteral(
"drawSource" ); }
341 QVariantMap properties() const override;
342 void readProperties( const QVariantMap &props ) override;
350 void setOpacity( const
double opacity ) { mOpacity = opacity; }
366 void setBlendMode(
const QPainter::CompositionMode mode ) { mBlendMode = mode; }
374 QPainter::CompositionMode
blendMode()
const {
return mBlendMode; }
382 double mOpacity = 1.0;
383 QPainter::CompositionMode mBlendMode = QPainter::CompositionMode_SourceOver;
425 QPainter *operator->() {
return mPainter; }
434 QPainter *mPainter =
nullptr;
A paint effect which blurs a source picture, using a number of different blur methods.
A paint effect which alters the colors (e.g., brightness, contrast) in a source picture.
A paint effect which draws the source picture with minor or no alterations.
QPainter::CompositionMode blendMode() const
Returns the blend mode for the effect.
void setBlendMode(const QPainter::CompositionMode mode)
Sets the blend mode for the effect.
QgsDrawSourceEffect()=default
Constructor for QgsDrawSourceEffect.
double opacity() const
Returns the opacity for the effect.
QString type() const override
Returns the effect type.
A paint effect which draws an offset and optionally blurred drop shadow.
A class to manager painter saving and restoring required for effect drawing.
A paint effect which consists of a stack of other chained paint effects.
QgsEffectStack & operator=(const QgsEffectStack &rhs)
A paint effect which draws a glow within a picture.
A paint effect which draws a glow outside of a picture.
Base class for visual effects which can be applied to QPicture drawings.
QgsPaintEffect()=default
Constructor for QgsPaintEffect.
virtual void readProperties(const QVariantMap &props)=0
Reads a string map of an effect's properties and restores the effect to the state described by the pr...
const QPicture * source() const
Returns the source QPicture.
virtual QgsPaintEffect * clone() const =0
Duplicates an effect by creating a deep copy of the effect.
DrawMode drawMode() const
Returns the draw mode for the effect.
bool enabled() const
Returns whether the effect is enabled.
virtual QVariantMap properties() const =0
Returns the properties describing the paint effect encoded in a string format.
DrawMode
Drawing modes for effects.
@ Render
The result of the effect is rendered on the destination, but does not affect subsequent effects in th...
@ Modifier
The result of the effect is not rendered, but is passed on to following effects in the stack.
virtual void draw(QgsRenderContext &context)=0
Handles drawing of the effect's result on to the specified render context.
virtual QString type() const =0
Returns the effect type.
Contains information about the context of a rendering operation.
#define SIP_CONVERT_TO_SUBCLASS_CODE(code)
#define SIP_NODEFAULTCTORS