qgstextformatwidget.h

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/***************************************************************************
    qgstextformatwidget.h
    ---------------------
    begin                : June 2009
    copyright            : (C) Martin Dobias
    email                : wonder dot sk at gmail dot com
 ***************************************************************************
 *                                                                         *
 *   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.                                   *
 *                                                                         *
 ***************************************************************************/
 
 
#ifndef QGSTEXTFORMATWIDGET_H
#define QGSTEXTFORMATWIDGET_H
 
#include "ui_qgstextformatwidgetbase.h"
#include "qgis_sip.h"
#include "qgstextformat.h"
#include "qgsstringutils.h"
#include "qgsguiutils.h"
#include "qgssymbolwidgetcontext.h"
#include <QFontDatabase>
#include "qgis_gui.h"
 
class QgsMapCanvas;
class QgsCharacterSelectorDialog;
 
 
class GUI_EXPORT QgsTextFormatWidget : public QWidget, public QgsExpressionContextGenerator, protected Ui::QgsTextFormatWidgetBase
{
    Q_OBJECT
    Q_PROPERTY( QgsTextFormat format READ format )
 
  public:
 
    QgsTextFormatWidget( const QgsTextFormat &format = QgsTextFormat(), QgsMapCanvas *mapCanvas = nullptr, QWidget *parent SIP_TRANSFERTHIS = nullptr,
                         QgsVectorLayer *layer = nullptr );
 
    ~QgsTextFormatWidget() override;
 
    QgsTextFormat format( bool includeDataDefinedProperties = true ) const;
 
    void setFormat( const QgsTextFormat &format );
 
    virtual void setContext( const QgsSymbolWidgetContext &context );
 
    QgsSymbolWidgetContext context() const;
 
    void deactivateField( QgsPalLayerSettings::Property key );
 
  public slots:
 
    void setDockMode( bool enabled );
 
  signals:
 
    void widgetChanged();
 
    void auxiliaryFieldCreated();
 
  protected:
 
    enum Mode
    {
      Text = 0, 
      Labeling, 
    };
 
    QgsTextFormatWidget( QgsMapCanvas *mapCanvas, QWidget *parent SIP_TRANSFERTHIS, Mode mode, QgsVectorLayer *layer = nullptr );
 
    void updateWidgetForFormat( const QgsTextFormat &format );
 
    void setPreviewBackground( const QColor &color );
 
    void enableDataDefinedAlignment( bool enable );
 
    QgsExpressionContext createExpressionContext() const override;
 
    QgsStringReplacementCollection mSubstitutions;
    QButtonGroup *mQuadrantBtnGrp = nullptr;
    QButtonGroup *mDirectSymbBtnGrp = nullptr;
    QButtonGroup *mUpsidedownBtnGrp = nullptr;
    QButtonGroup *mPlacePointBtnGrp = nullptr;
    QButtonGroup *mPlaceLineBtnGrp = nullptr;
    QButtonGroup *mPlacePolygonBtnGrp = nullptr;
    int mMinPixelLimit = 0;
 
    QgsMapCanvas *mMapCanvas = nullptr;
 
    QgsSymbolWidgetContext mContext;
 
    QgsPropertyCollection mDataDefinedProperties;
 
    QgsVectorLayer *mLayer = nullptr;
 
    QgsSymbolLayerReferenceList mMaskedSymbolLayers;
 
  protected slots:
 
    void updateLinePlacementOptions();
 
    void updatePlacementWidgets();
 
    virtual void setFormatFromStyle( const QString &name, QgsStyle::StyleEntity type );
 
    virtual void saveFormat();
 
    void updatePreview();
 
#ifndef SIP_RUN
 
    void populateDataDefinedButtons();
#endif
 
  private:
    Mode mWidgetMode = Text;
 
    QgsCharacterSelectorDialog *mCharDlg = nullptr;
    std::unique_ptr< QgsPaintEffect > mBufferEffect;
    std::unique_ptr< QgsPaintEffect > mMaskEffect;
    std::unique_ptr< QgsPaintEffect > mBackgroundEffect;
    QColor mPreviewBackgroundColor;
 
    QFontDatabase mFontDB;
 
    // background reference font
    QFont mRefFont;
    bool mDockMode = false;
 
    bool mLoadSvgParams = false;
    QgsExpressionContext mPreviewExpressionContext;
 
    QMap<QgsPalLayerSettings::Property, QgsPropertyOverrideButton *> mButtons;
 
    void initWidget();
    void setWidgetMode( Mode mode );
    void toggleDDButtons( bool visible );
    void blockFontChangeSignals( bool blk );
    void populateFontCapitalsComboBox();
    void populateFontStyleComboBox();
    void updateFont( const QFont &font );
    void connectValueChanged( const QList<QWidget *> &widgets, const char *slot );
 
    void registerDataDefinedButton( QgsPropertyOverrideButton *button, QgsPalLayerSettings::Property key );
 
  private slots:
    void optionsStackedWidget_CurrentChanged( int indx );
    void showBackgroundRadius( bool show );
    void showBackgroundPenStyle( bool show );
    void mShapeSVGPathLineEdit_textChanged( const QString &text );
    void onSubstitutionsChanged( const QgsStringReplacementCollection &substitutions );
    void previewScaleChanged( double scale );
    void mFontSizeSpinBox_valueChanged( double d );
    void mFontCapitalsComboBox_currentIndexChanged( int index );
    void mFontFamilyCmbBx_currentFontChanged( const QFont &f );
    void mFontStyleComboBox_currentIndexChanged( const QString &text );
    void mFontUnderlineBtn_toggled( bool ckd );
    void mFontStrikethroughBtn_toggled( bool ckd );
    void kerningToggled( bool checked );
    void mFontWordSpacingSpinBox_valueChanged( double spacing );
    void mFontLetterSpacingSpinBox_valueChanged( double spacing );
    void mFontSizeUnitWidget_changed();
    void mFontMinPixelSpinBox_valueChanged( int px );
    void mFontMaxPixelSpinBox_valueChanged( int px );
    void mBufferUnitWidget_changed();
    void mMaskBufferUnitWidget_changed();
    void mCoordXDDBtn_changed( );
    void mCoordYDDBtn_changed( );
    void mShapeTypeCmbBx_currentIndexChanged( int index );
    void mShapeRotationCmbBx_currentIndexChanged( int index );
    void mShapeSVGParamsBtn_clicked();
    void mShapeSVGSelectorBtn_clicked();
    void mPreviewTextEdit_textChanged( const QString &text );
    void mPreviewTextBtn_clicked();
    void mPreviewBackgroundBtn_colorChanged( const QColor &color );
    void mDirectSymbLeftToolBtn_clicked();
    void mDirectSymbRightToolBtn_clicked();
    void chkLineOrientationDependent_toggled( bool active );
    void mToolButtonConfigureSubstitutes_clicked();
    void collapseSample( bool collapse );
    void changeTextColor( const QColor &color );
    void changeBufferColor( const QColor &color );
    void scrollPreview();
    void updateSvgWidgets( const QString &svgPath );
    void updateAvailableShadowPositions();
    void updateProperty();
    void createAuxiliaryField();
    void updateShapeFrameStatus();
    void updateBufferFrameStatus();
    void updateShadowFrameStatus();
    void updateCalloutFrameStatus();
};
 
 
class GUI_EXPORT QgsTextFormatDialog : public QDialog
{
    Q_OBJECT
 
  public:
 
    QgsTextFormatDialog( const QgsTextFormat &format, QgsMapCanvas *mapCanvas = nullptr, QWidget *parent SIP_TRANSFERTHIS = nullptr, Qt::WindowFlags fl = QgsGuiUtils::ModalDialogFlags, QgsVectorLayer *layer = nullptr );
 
    QgsTextFormat format() const;
 
    void setContext( const QgsSymbolWidgetContext &context );
 
    QDialogButtonBox *buttonBox() const;
 
  private:
 
    QgsTextFormatWidget *mFormatWidget = nullptr;
    QDialogButtonBox *mButtonBox = nullptr;
 
  private slots:
    void showHelp();
 
};
 
class GUI_EXPORT QgsTextFormatPanelWidget : public QgsPanelWidgetWrapper
{
    Q_OBJECT
 
  public:
 
    QgsTextFormatPanelWidget( const QgsTextFormat &format, QgsMapCanvas *mapCanvas = nullptr, QWidget *parent SIP_TRANSFERTHIS = nullptr, QgsVectorLayer *layer = nullptr );
 
    QgsTextFormat format() const;
 
    void setContext( const QgsSymbolWidgetContext &context );
 
    void setDockMode( bool dockMode ) override;
 
  private:
 
    QgsTextFormatWidget *mFormatWidget = nullptr;
};
 
#endif //QGSTEXTFORMATWIDGET_H