NEW: added "currentcolor" as color-placeholder in style.ini files and using it in conjunction with linear-gradient() in cyberpunk and dark styles

NEW: added style simple_noaxes.ini

doc/dox/jkqtplotter_styling.dox

@@ -91,6 +91,10 @@ Here is a table with all available ready-made styles:
     <td><a href="https://github.com/jkriege2/JKQtPlotter/tree/master/lib/jkqtplotter/resources/styles/simple_gridandticks.ini"><code>:/JKQTPlotter/styles/simple_gridandticks.ini</code></a>
     <td>\image html simple_gridandticks.ini.png
     <td>\image html simple_gridandticks.ini.symbols.png
+  <tr>
+    <td><a href="https://github.com/jkriege2/JKQtPlotter/tree/master/lib/jkqtplotter/resources/styles/simple_noaxes.ini"><code>:/JKQTPlotter/styles/simple_noaxes.ini</code></a>
+    <td>\image html simple_noaxes.ini.png
+    <td>\image html simple_noaxes.ini.symbols.png
 </table>
 <!--/include:styles.dox-->
 

doc/dox/whatsnew.dox

@@ -118,7 +118,8 @@ Changes, compared to  \ref page_whatsnew_V4_0_0 "v4.0.0" include:
     <li>NEW: Due to addition of JKQTMathText::setFontOptions() and the matchign extension of JKQTMathText::setFontSpecial() (see below) you can now add modifiers like <tt>+BOLD+ITALIC</tt> to any font-name provided to JKQTPlotter and in style INI-files</li>
     <li>NEW: added JKQTPLabelMinBesides and JKQTPLabelMaxBesides to JKQTPLabelPosition, so labels can be set besides the axes</li>
     <li>NEW/REWORKED all functions in JKQTBasePlotter are re-entrant, i.e. different instances can be used from different threads in parallel (although there is some overhead due to shared caches between the threads!). This is demonstrated and discussed in \ref JKQTPlotterMultiThreaded . </li>
-    <li>NEW: NEW allow linear-gradient()... in brush definitions of style.ini-file</li>
+    <li>NEW: allow linear-gradient(), currentcolor, ... in brush definitions of style.ini-file ... and using it is cyberpunk and dark styles</li>
+    <li>NEW: style simple_noaxes.ini</li>
   </ul></li>
   
   <li>JKQTMathText:<ul>

lib/jkqtcommon/jkqtpdrawingtools.cpp

@@ -21,6 +21,12 @@
 #include <QDebug>
 
 const double JKQTPlotterDrawingTools::ABS_MIN_LINEWIDTH= 0.02;
+const QColor JKQTPlotterDrawingTools::CurrentColorPlaceholder = QColor::fromRgbF(0.1234,0.5678,0.9123,1.0);
+const QColor JKQTPlotterDrawingTools::CurrentColorPlaceholder_Trans10 = QColor::fromRgbF(0.1234,0.5678,0.9123,0.1);
+const QColor JKQTPlotterDrawingTools::CurrentColorPlaceholder_Trans25 = QColor::fromRgbF(0.1234,0.5678,0.9123,0.25);
+const QColor JKQTPlotterDrawingTools::CurrentColorPlaceholder_Trans50 = QColor::fromRgbF(0.1234,0.5678,0.9123,0.5);
+const QColor JKQTPlotterDrawingTools::CurrentColorPlaceholder_Trans75 = QColor::fromRgbF(0.1234,0.5678,0.9123,0.75);
+const QColor JKQTPlotterDrawingTools::CurrentColorPlaceholder_Trans90 = QColor::fromRgbF(0.1234,0.5678,0.9123,0.9);
 
 
 
@@ -567,3 +573,22 @@ JKQTPGraphSymbols JKQTPRegisterCustomGraphSymbol(const JKQTPCustomGraphSymbolFun
     JKQTPlotterDrawingTools::JKQTPCustomGraphSymbolStore->push_back(f);
     return static_cast<JKQTPGraphSymbols>(static_cast<uint64_t>(JKQTPFirstCustomSymbol)+static_cast<uint64_t>(JKQTPlotterDrawingTools::JKQTPCustomGraphSymbolStore->size()-1));
 }
+
+void JKQTPReplaceCurrentColor(QColor &col, const QColor &currentColor)
+{
+    if (col==JKQTPlotterDrawingTools::CurrentColorPlaceholder) col=currentColor;
+    else if (col==JKQTPlotterDrawingTools::CurrentColorPlaceholder_Trans10) { col=currentColor; col.setAlphaF(0.9); }
+    else if (col==JKQTPlotterDrawingTools::CurrentColorPlaceholder_Trans25) { col=currentColor; col.setAlphaF(0.75); }
+    else if (col==JKQTPlotterDrawingTools::CurrentColorPlaceholder_Trans50) { col=currentColor; col.setAlphaF(0.5); }
+    else if (col==JKQTPlotterDrawingTools::CurrentColorPlaceholder_Trans75) { col=currentColor; col.setAlphaF(0.25); }
+    else if (col==JKQTPlotterDrawingTools::CurrentColorPlaceholder_Trans90) { col=currentColor; col.setAlphaF(0.1); }
+}
+
+void JKQTPReplaceCurrentColor(QGradient &grad, const QColor &currentColor)
+{
+    auto stops=grad.stops();
+    for (auto& s: stops) {
+        JKQTPReplaceCurrentColor(s.second, currentColor);
+    }
+    grad.setStops(stops);
+}

lib/jkqtcommon/jkqtpdrawingtools.h

@@ -79,6 +79,36 @@ typedef std::function<void(QPainter& p)> JKQTPCustomGraphSymbolFunctor;
    \ingroup jkqtptools_drawing
    */
 struct JKQTPlotterDrawingTools {
+    /** \brief a special placeholder that can be used to indicate that a color should be replaced by the "current color" in a certain context
+     *
+     *  \see JKQTPReplaceCurrentColor()
+     */
+    static JKQTCOMMON_LIB_EXPORT const QColor CurrentColorPlaceholder;
+    /** \brief a special placeholder that can be used to indicate that a color should be replaced by the "current color", but with 10% transparency in a certain context
+     *
+     *  \see JKQTPReplaceCurrentColor(), JKQTPlotterDrawingTools::CurrentColorPlaceholder_Trans10, ...
+      */
+    static JKQTCOMMON_LIB_EXPORT const QColor CurrentColorPlaceholder_Trans10;
+    /** \brief a special placeholder that can be used to indicate that a color should be replaced by the "current color", but with 25% transparency in a certain context
+     *
+     *  \see JKQTPReplaceCurrentColor(), JKQTPlotterDrawingTools::CurrentColorPlaceholder, ...
+      */
+    static JKQTCOMMON_LIB_EXPORT const QColor CurrentColorPlaceholder_Trans25;
+    /** \brief a special placeholder that can be used to indicate that a color should be replaced by the "current color", but with 50% transparency in a certain context
+     *
+     *  \see JKQTPReplaceCurrentColor(), JKQTPlotterDrawingTools::CurrentColorPlaceholder, JKQTPlotterDrawingTools::CurrentColorPlaceholder_Trans10, ...
+      */
+    static JKQTCOMMON_LIB_EXPORT const QColor CurrentColorPlaceholder_Trans50;
+    /** \brief a special placeholder that can be used to indicate that a color should be replaced by the "current color", but with 75% transparency in a certain context
+     *
+     *  \see JKQTPReplaceCurrentColor(), JKQTPlotterDrawingTools::CurrentColorPlaceholder, JKQTPlotterDrawingTools::CurrentColorPlaceholder_Trans10, ...
+      */
+    static JKQTCOMMON_LIB_EXPORT const QColor CurrentColorPlaceholder_Trans75;
+    /** \brief a special placeholder that can be used to indicate that a color should be replaced by the "current color", but with 90% transparency in a certain context
+     *
+     *  \see JKQTPReplaceCurrentColor(), JKQTPlotterDrawingTools::CurrentColorPlaceholder, JKQTPlotterDrawingTools::CurrentColorPlaceholder_Trans10, ...
+      */
+    static JKQTCOMMON_LIB_EXPORT const QColor CurrentColorPlaceholder_Trans90;
     /** \brief smallest linewidth any line in JKQTPlotter/JKQTBasePlotter may have
      */
     static JKQTCOMMON_LIB_EXPORT const double ABS_MIN_LINEWIDTH;
@@ -93,6 +123,19 @@ struct JKQTPlotterDrawingTools {
 
 
 
+/*! \brief check whether \a col equals JKQTPlotterDrawingTools::CurrentColorPlaceholder (or one of its variants) and then replace it by \a currentColor
+   \ingroup jkqtptools_drawing
+
+    \see JKQTPlotterDrawingTools::CurrentColorPlaceholder, JKQTPlotterDrawingTools::CurrentColorPlaceholder_Trans10, ...
+   */
+JKQTCOMMON_LIB_EXPORT void JKQTPReplaceCurrentColor(QColor& col, const QColor& currentColor);
+/*! \brief check whether any color in \a grad equals JKQTPlotterDrawingTools::CurrentColorPlaceholder (or one of its variants) and then replace it by \a currentColor
+   \ingroup jkqtptools_drawing
+
+    \see JKQTPlotterDrawingTools::CurrentColorPlaceholder, JKQTPlotterDrawingTools::CurrentColorPlaceholder_Trans10, ...
+   */
+JKQTCOMMON_LIB_EXPORT void JKQTPReplaceCurrentColor(QGradient& grad, const QColor& currentColor);
+
 
 /** \brief symbols that can be used to plot a datapoint for a graph
  * \ingroup jkqtptools_drawing

lib/jkqtcommon/jkqtpstringtools.cpp

@@ -21,6 +21,7 @@
 #include "jkqtcommon/jkqtpstringtools.h"
 #include "jkqtcommon/jkqtpmathtools.h"
 #include "jkqtcommon/jkqtpcsstools.h"
+#include "jkqtcommon/jkqtpdrawingtools.h"
 #include <QDateTime>
 #include <cmath>
 #include <QDebug>
@@ -653,6 +654,12 @@ QColor jkqtp_lookupQColorName(const QString &color, bool namesOnly, bool *nameFo
 #if (QT_VERSION>=QT_VERSION_CHECK(5, 12, 0))
     if (col=="placeholdertext") return QGuiApplication::palette().color(QPalette::PlaceholderText);
 #endif
+    if (col=="currentcolor") return JKQTPlotterDrawingTools::CurrentColorPlaceholder;
+    if (col=="currentcolor10") return JKQTPlotterDrawingTools::CurrentColorPlaceholder_Trans10;
+    if (col=="currentcolor25") return JKQTPlotterDrawingTools::CurrentColorPlaceholder_Trans25;
+    if (col=="currentcolor50") return JKQTPlotterDrawingTools::CurrentColorPlaceholder_Trans50;
+    if (col=="currentcolor75") return JKQTPlotterDrawingTools::CurrentColorPlaceholder_Trans75;
+    if (col=="currentcolor90") return JKQTPlotterDrawingTools::CurrentColorPlaceholder_Trans90;
 
     for (int i=0; i<rgbTblSize; i++) {
        if (col==rgbTbl[i].name) return QColor(rgbTbl[i].value);

lib/jkqtplotter/jkqtpbaseplotter.cpp

@@ -1155,12 +1155,18 @@ JKQTBasePlotter::JKQTPPen JKQTBasePlotter::getPlotStyle(int i, JKQTPPlotStyleTyp
     JKQTPGraphSymbols baseSymbol=plotterStyle.graphsStyle.defaultGraphSymbols[symbolI];
     QColor baseColor=plotterStyle.graphsStyle.defaultGraphColors[colorI];
     double baseWidth=baseProps.defaultLineWidth;
-    if (type==JKQTPPlotStyleType::Annotation || type==JKQTPPlotStyleType::Geometric) {
+    if (type==JKQTPPlotStyleType::Annotation) {
         baseColor=plotterStyle.graphsStyle.annotationStyle.defaultColor;
         basePenStyle=plotterStyle.graphsStyle.annotationStyle.defaultLineStyle;
-        basebrushStyle=JKQTFillStyleSummmary(plotterStyle.graphsStyle.annotationStyle.defaultFillStyle);
+        basebrushStyle=plotterStyle.graphsStyle.annotationStyle.defaultFillStyle;
         baseSymbol=plotterStyle.graphsStyle.annotationStyle.defaultSymbol;
     }
+    if (type==JKQTPPlotStyleType::Geometric) {
+        baseColor=plotterStyle.graphsStyle.geometricStyle.defaultColor;
+        basePenStyle=plotterStyle.graphsStyle.geometricStyle.defaultLineStyle;
+        basebrushStyle=plotterStyle.graphsStyle.geometricStyle.defaultFillStyle;
+        baseSymbol=plotterStyle.graphsStyle.geometricStyle.defaultSymbol;
+    }
     if (type==JKQTPPlotStyleType::Barchart || type==JKQTPPlotStyleType::Boxplot || type==JKQTPPlotStyleType::Impulses) {
         basePenStyle=Qt::SolidLine;
     }

lib/jkqtplotter/jkqtpgraphsbasestyle.cpp

@@ -146,7 +146,7 @@ void JKQTGeometricSpecificStyleProperties::loadSettings(const QSettings &setting
     defaultColor=jkqtp_String2QColor(settings.value(group+"color", jkqtp_QColor2String(defaultColor)).toString());
     defaultLineStyle=jkqtp_String2QPenStyle(settings.value(group+"line_style", jkqtp_QPenStyle2String(defaultLineStyle)).toString());
     defaultSymbol=String2JKQTPGraphSymbols(settings.value(group+"symbol", JKQTPGraphSymbols2String(defaultSymbol)).toString());
-    defaultFillStyle=jkqtp_String2QBrushStyle(settings.value(group+"fill_style", jkqtp_QBrushStyle2String(defaultFillStyle)).toString());
+    defaultFillStyle=JKQTFillStyleSummmary::fromString(settings.value(group+"fill_style", defaultFillStyle.toCSSString()).toString());
 }
 
 void JKQTGeometricSpecificStyleProperties::saveSettings(QSettings &settings, const QString &group) const
@@ -155,7 +155,7 @@ void JKQTGeometricSpecificStyleProperties::saveSettings(QSettings &settings, con
     settings.setValue(group+"color", jkqtp_QColor2String(defaultColor));
     settings.setValue(group+"line_style", jkqtp_QPenStyle2String(defaultLineStyle));
     settings.setValue(group+"symbol", JKQTPGraphSymbols2String(defaultSymbol));
-    settings.setValue(group+"fill_style", jkqtp_QBrushStyle2String(defaultFillStyle));
+    settings.setValue(group+"fill_style", defaultFillStyle.toCSSString());
 }
 
 JKQTAnnotationsSpecificStyleProperties::JKQTAnnotationsSpecificStyleProperties(const JKQTBasePlotterStyle& parent):
@@ -512,6 +512,7 @@ QBrush JKQTFillStyleSummmary::brush(const QColor &color) const
     b.setColor(color);
     if (brushStyle==Qt::LinearGradientPattern || brushStyle==Qt::RadialGradientPattern || brushStyle==Qt::ConicalGradientPattern) {
         QGradient g=gradient;
+        JKQTPReplaceCurrentColor(g, color);
         g.setCoordinateMode(QGradient::ObjectMode);
         b=QBrush(g);
     } else {
@@ -523,6 +524,11 @@ QBrush JKQTFillStyleSummmary::brush(const QColor &color) const
 JKQTFillStyleSummmary JKQTFillStyleSummmary::fromString(const QString &style)
 {
     JKQTFillStyleSummmary res;
-    res.brushStyle=jkqtp_String2QBrushStyleExt(style, nullptr, &(res.gradient), nullptr, &(res.rotationAngleDeg));
+    res.brushStyle=jkqtp_String2QBrushStyleExt(style, nullptr, &(res.gradient), &(res.texture), &(res.rotationAngleDeg));
     return res;
 }
+
+QString JKQTFillStyleSummmary::toCSSString() const
+{
+    return jkqtp_QBrushStyle2String(brushStyle);
+}

lib/jkqtplotter/jkqtpgraphsbasestyle.h

@@ -39,6 +39,30 @@
 
 class JKQTBasePlotterStyle; // forward
 
+/** \brief Support Class for JKQTBasePlotter, which summarizes a fill style
+ *  \ingroup jkqtpplotter_styling_classes
+ *
+ *  \see JKQTBasePlotter, JKQTGraphsBaseStyle, \ref jkqtpplotter_styling
+ */
+class JKQTPLOTTER_LIB_EXPORT JKQTFillStyleSummmary {
+#ifndef JKQTPLOTTER_WORKAROUND_QGADGET_BUG
+    Q_GADGET
+#endif
+public:
+    JKQTFillStyleSummmary(Qt::BrushStyle style=Qt::SolidPattern, const QGradient& grad=QGradient(), double rotAngleDeg=0.0);
+
+    Qt::BrushStyle brushStyle;
+    QGradient gradient;
+    QPixmap texture;
+    double rotationAngleDeg;
+
+    QBrush brush(const QColor& color) const;
+
+    /** \brief reads object contents from a string representation, e.g. as created by JKQTFillStyleSummmary::toCSSString() */
+    static JKQTFillStyleSummmary fromString(const QString& style);
+    /** \brief converst the contents to a string representation */
+    QString toCSSString() const;
+};
 
 /** \brief Support Class for JKQTBasePlotter, which summarizes all properties that define the visual styling of graphs
  *  \ingroup jkqtpplotter_styling_classes
@@ -155,7 +179,7 @@ public:
      /** \brief graph symbol used */
      JKQTPGraphSymbols defaultSymbol;
      /** \brief graph fill style used */
-     Qt::BrushStyle defaultFillStyle;
+     JKQTFillStyleSummmary defaultFillStyle;
 
 
 };
@@ -292,26 +316,6 @@ public:
 
 };
 
-/** \brief Support Class for JKQTBasePlotter, which summarizes a fill style
- *  \ingroup jkqtpplotter_styling_classes
- *
- *  \see JKQTBasePlotter, JKQTGraphsBaseStyle, \ref jkqtpplotter_styling
- */
-class JKQTPLOTTER_LIB_EXPORT JKQTFillStyleSummmary {
-#ifndef JKQTPLOTTER_WORKAROUND_QGADGET_BUG
-    Q_GADGET
-#endif
-public:
-    JKQTFillStyleSummmary(Qt::BrushStyle style=Qt::SolidPattern, const QGradient& grad=QGradient(), double rotAngleDeg=0.0);
-
-    Qt::BrushStyle brushStyle;
-    QGradient gradient;
-    double rotationAngleDeg;
-
-    QBrush brush(const QColor& color=QColor(Qt::black)) const;
-
-    static JKQTFillStyleSummmary fromString(const QString& style);
-};
 
 
 /** \brief Support Class for JKQTBasePlotter, which summarizes all properties that define the visual styling of a JKQTBasePlotter

lib/jkqtplotter/resources/jkqtpstyles.qrc

@@ -9,6 +9,7 @@
         <file>styles/simple_axesoffset_plotbox.ini</file>
         <file>styles/simple_gridandticks.ini</file>
         <file>styles/simple_arrowsaxes.ini</file>
+        <file>styles/simple_noaxes.ini</file>
         <file>styles/legacy_default_style.ini</file>
         <file>styles/cyberpunk.ini</file>
     </qresource>

lib/jkqtplotter/resources/styles/blackandwhite.ini

@@ -9,6 +9,7 @@ graphs\graphs_base\error_color_mode=lighter
 graphs\graphs_base\error_fill_color_mode=even_lighter_and_transparent
 graphs\graphs_base\symbol_fill_color_mode=grey75
 graphs\graphs_annotation\fill_color_mode=transparent
+graphs\graphs_geometric\color=black
 graphs\graphs_barchart\linewidth=1
 graphs\graphs_boxplot\fill_color_mode=white
 text_default_size=10

lib/jkqtplotter/resources/styles/cyberpunk.ini

@@ -55,6 +55,7 @@ graphs\auto_styles\color2=#F5D300
 graphs\auto_styles\color3=#00ff41
 graphs\auto_styles\color4=#FF0000
 graphs\auto_styles\color5=#9467bd
+graphs\auto_styles\fill_style0="linear-gradient(150deg,currentcolor10,currentcolor90)"
 graphs\graphs_base\linewidth=2
 graphs\graphs_base\symbol_size=10
 graphs\graphs_base\symbol_line_width=1

lib/jkqtplotter/resources/styles/dark.ini

@@ -56,6 +56,7 @@ graphs\auto_styles\color3="hsv(164,100%,90%)"
 graphs\auto_styles\color4="hsv(42,100%,90%)"
 graphs\auto_styles\color5="hsv(202,63%,90%)"
 graphs\auto_styles\color6="hsv(0,0%,90%)"
+graphs\auto_styles\fill_style0="linear-gradient(150deg,currentcolor10,currentcolor50)"
 graphs\graphs_base\linewidth=1
 graphs\graphs_base\symbol_size=8
 graphs\graphs_base\symbol_line_width=0.75

lib/jkqtplotter/resources/styles/default.ini

@@ -70,10 +70,12 @@ key\xoffset=1
 key\yoffset=1
 key\xmargin=0.5
 key\ymargin=0.5
-key\xseparation=0.75
-key\yseparation=0.75
+key\xseparation=0.85
+key\yseparation=0.35
+key\column_separation=0.75
 key\frame_visible=true
 key\frame_color=black
+key\frame_linestyle=solid
 key\frame_width=1
 key\frame_rounding=0
 key\background_color=white
@@ -81,11 +83,10 @@ key\visible=true
 key\position=inside_topright
 key\layout=one_column
 key\fontsize=9
+key\fontname=GUI
 key\text_color=black
-key\item_width=20
-key\item_height=2.2
-key\line_width=3
-key\autosize=true
+key\sample_width=3
+key\sample_height=1
 axis_x\color=black
 axis_x\draw_mode1=complete
 axis_x\draw_mode2=line+ticks

lib/jkqtplotter/resources/styles/simple_noaxes.ini

@@ -0,0 +1,15 @@
+[plots]
+widget_background_color=white
+axis_x\draw_mode1=none
+axis_x\draw_mode2=none
+axis_x\zero_line\enabled=false
+axis_x\grid\enabled=false
+axis_y\draw_mode1=none
+axis_y\draw_mode2=none
+axis_y\grid\enabled=false
+axis_colorbar_right\draw_mode1=none
+axis_colorbar_right\draw_mode2=ticks+labels+axislabel
+axis_colorbar_top\draw_mode1=none
+axis_colorbar_top\draw_mode2=ticks+labels+axislabel
+graphs\graphs_geometric\color=black
+graphs\graphs_annotation\color=black