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From: "Yordan Karadzhov (VMware)" <y.karadz@gmail.com>
To: rostedt@goodmis.org
Cc: linux-trace-devel@vger.kernel.org,
	"Yordan Karadzhov (VMware)" <y.karadz@gmail.com>
Subject: [PATCH v8 44/44] kernel-shark: Add double click interface to PlotObject
Date: Mon,  4 Jan 2021 19:47:24 +0200
Message-ID: <20210104174724.70404-45-y.karadz@gmail.com> (raw)
In-Reply-To: <20210104174724.70404-1-y.karadz@gmail.com>

The interface consists of two virtual methods that have to be implemented
by the inheriting classes. The first implements the double-click action
of the object while the second one calculates the distance between the
object and the exact position of the mouse click. The second method is
used by the GUI to decide if the double-click action has to be executed
or not. The patch contains a simple method for retrieving the geometrical
center of a Shape. This helper method can be useful when implementing the
calculation of the distance in the inheriting classes.

Signed-off-by: Yordan Karadzhov (VMware) <y.karadz@gmail.com>
---
 src/KsPlotTools.cpp | 31 +++++++++++++++++++++++++++++++
 src/KsPlotTools.hpp | 14 ++++++++++++++
 2 files changed, 45 insertions(+)

diff --git a/src/KsPlotTools.cpp b/src/KsPlotTools.cpp
index 8d38009..ac9c5b2 100644
--- a/src/KsPlotTools.cpp
+++ b/src/KsPlotTools.cpp
@@ -251,6 +251,21 @@ Color getColor(const ColorTable *colors, int id)
 	return {};
 }
 
+/**
+ * @brief A method to be implemented in the inheriting class. It calculates
+ *	  the distance between the position of the click and the shape. This
+ *	  distance is used by the GUI to decide if the corresponding
+ *	  "Double click" action of the shape must be executed. The default
+ *	  implementation returns infinity.
+ *
+ * @param x: The X coordinate of the click.
+ * @param y: The Y coordinate of the click.
+ */
+double PlotObject::distance(int x, int y) const
+{
+	return std::numeric_limits<double>::max();
+}
+
 /**
  * @brief Create a default Shape.
  */
@@ -298,6 +313,22 @@ Shape::~Shape() {
 	delete[] _points;
 }
 
+/** @brief Get the coordinates of the geometrical center of this shape. */
+ksplot_point Shape::center() const
+{
+	ksplot_point c = {0, 0};
+
+	for (size_t i = 0; i < _nPoints; ++i) {
+		c.x += _points[i].x;
+		c.y += _points[i].y;
+	}
+
+	c.x /= _nPoints;
+	c.y /= _nPoints;
+
+	return c;
+}
+
 /** Assignment operator. */
 void Shape::operator=(const Shape &s)
 {
diff --git a/src/KsPlotTools.hpp b/src/KsPlotTools.hpp
index b9b93f3..c993181 100644
--- a/src/KsPlotTools.hpp
+++ b/src/KsPlotTools.hpp
@@ -103,6 +103,16 @@ public:
 			_draw(_color, _size);
 	}
 
+	/**
+	 * Generic action to be executed when the objects is double clicked.
+	 */
+	void doubleClick() const {
+		if (_visible)
+			_doubleClick();
+	}
+
+	virtual double distance(int x, int y) const;
+
 	/** Is this object visible. */
 	bool	_visible;
 
@@ -114,6 +124,8 @@ public:
 
 private:
 	virtual void _draw(const Color &col, float s) const = 0;
+
+	virtual void _doubleClick() const {}
 };
 
 /** List of graphical element. */
@@ -135,6 +147,8 @@ public:
 	/* Keep this destructor virtual. */
 	virtual ~Shape();
 
+	ksplot_point center() const;
+
 	void operator=(const Shape &s);
 
 	void setPoint(size_t i, int x, int y);
-- 
2.25.1


  parent reply index

Thread overview: 46+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-01-04 17:46 [PATCH v8 00/44] Start KernelShark v2 transformation Yordan Karadzhov (VMware)
2021-01-04 17:46 ` [PATCH v8 01/44] kernel-shark: Adopt trace-cmd API changes Yordan Karadzhov (VMware)
2021-01-04 17:46 ` [PATCH v8 02/44] kernel-shark: Use libtraceevent and libtracefs Yordan Karadzhov (VMware)
2021-01-04 17:46 ` [PATCH v8 03/44] kernel-shark: Add license information Yordan Karadzhov (VMware)
2021-01-04 17:46 ` [PATCH v8 04/44] kernel-shark: Change the CMake minimum version required Yordan Karadzhov (VMware)
2021-01-04 17:46 ` [PATCH v8 05/44] kernel-shark: Change default libraries install location Yordan Karadzhov (VMware)
2021-01-04 17:46 ` [PATCH v8 06/44] kernel-shark: Split the installation in two components Yordan Karadzhov (VMware)
2021-01-04 17:46 ` [PATCH v8 07/44] kernel-shark: Update README Yordan Karadzhov (VMware)
2021-01-04 17:46 ` [PATCH v8 08/44] kernel-shark: Define build target for JSONC Yordan Karadzhov (VMware)
2021-01-04 17:46 ` [PATCH v8 09/44] kernel-shark: Use only signed types in kshark_entry Yordan Karadzhov (VMware)
2021-01-04 17:46 ` [PATCH v8 10/44] kernel-shark: Add stream_id to kshark_entry Yordan Karadzhov (VMware)
2021-01-04 17:46 ` [PATCH v8 11/44] kernel-shark: Introduce libkshark-hash Yordan Karadzhov (VMware)
2021-01-04 17:46 ` [PATCH v8 12/44] kernel-shark: Introduce Data streams Yordan Karadzhov (VMware)
2021-01-04 17:46 ` [PATCH v8 13/44] kernel-shark: Rename static methods in libkshark Yordan Karadzhov (VMware)
2021-01-04 17:46 ` [PATCH v8 14/44] kernel-shark: Add basic methods for Data streams Yordan Karadzhov (VMware)
2021-01-04 17:46 ` [PATCH v8 15/44] kernel-shark: Housekeeping before implementing stream interface Yordan Karadzhov (VMware)
2021-01-04 17:46 ` [PATCH v8 16/44] kernel-shark: Add stream interface for trace-cmd data Yordan Karadzhov (VMware)
2021-01-04 17:46 ` [PATCH v8 17/44] kernel-shark: Start introducing KernelShark 2.0 Yordan Karadzhov (VMware)
2021-01-04 17:46 ` [PATCH v8 18/44] kernel-shark: Start using data streams Yordan Karadzhov (VMware)
2021-01-04 17:46 ` [PATCH v8 19/44] kernel-shark: Remove dead code Yordan Karadzhov (VMware)
2021-01-04 17:47 ` [PATCH v8 20/44] kernel-shark: Redesign the plugin interface Yordan Karadzhov (VMware)
2021-01-04 17:47 ` [PATCH v8 21/44] kernel-shark: Complete the stream integration Yordan Karadzhov (VMware)
2021-01-04 17:47 ` [PATCH v8 22/44] kernel-shark: Provide merging of multiple data streams Yordan Karadzhov (VMware)
2021-01-04 17:47 ` [PATCH v8 23/44] kernel-shark: Integrate the stream definitions with data model Yordan Karadzhov (VMware)
2021-01-04 17:47 ` [PATCH v8 24/44] kernel-shark: Use only signed types for model defs Yordan Karadzhov (VMware)
2021-01-04 17:47 ` [PATCH v8 25/44] kernel-shark: Add ksmodel_get_bin() Yordan Karadzhov (VMware)
2021-01-04 17:47 ` [PATCH v8 26/44] kernel-shark: Protect ksmodel_set_in_range_bining() Yordan Karadzhov (VMware)
2021-01-04 17:47 ` [PATCH v8 27/44] kernel-shark: Add methods for time calibration Yordan Karadzhov (VMware)
2021-01-04 17:47 ` [PATCH v8 28/44] kernel-shark: Integrate streams with libkshark-configio Yordan Karadzhov (VMware)
2021-01-04 17:47 ` [PATCH v8 29/44] kernel-shark: Add support for drawing text Yordan Karadzhov (VMware)
2021-01-04 17:47 ` [PATCH v8 30/44] kernel-shark: Make GLUT optional dependency Yordan Karadzhov (VMware)
2021-01-04 17:47 ` [PATCH v8 31/44] kernel-shark: Add ksplot_draw_polyline() Yordan Karadzhov (VMware)
2021-01-04 17:47 ` [PATCH v8 32/44] kernel-shark: Optimize ksplot_draw_polygon() Yordan Karadzhov (VMware)
2021-01-04 17:47 ` [PATCH v8 33/44] kernel-shark: Add basic infrastructure for testing Yordan Karadzhov (VMware)
2021-01-04 17:47 ` [PATCH v8 34/44] kernel-shark: Add "github Actions" workflow Yordan Karadzhov (VMware)
2021-01-04 17:47 ` [PATCH v8 35/44] kernel-shark: Integrate streams with KsPlotTools Yordan Karadzhov (VMware)
2021-01-04 17:47 ` [PATCH v8 36/44] kernel-shark: Add getStreamColorTable() Yordan Karadzhov (VMware)
2021-01-04 17:47 ` [PATCH v8 37/44] kernel-shark: Redefine the args of KsPlot::getColor() Yordan Karadzhov (VMware)
2021-01-04 17:47 ` [PATCH v8 38/44] kernel-shark: Add TextBox class to KsPlot namespace Yordan Karadzhov (VMware)
2021-01-04 17:47 ` [PATCH v8 39/44] kernel-shark: Consistent method naming in KsPlotTools Yordan Karadzhov (VMware)
2021-01-04 17:47 ` [PATCH v8 40/44] kernel-shark: Make the label part of the graph Yordan Karadzhov (VMware)
2021-01-04 17:47 ` [PATCH v8 41/44] kernel-shark: Remove the hard-coded Idle PID Yordan Karadzhov (VMware)
2021-01-04 17:47 ` [PATCH v8 42/44] kernel-shark: Add class Polyline to KsPlot namespace Yordan Karadzhov (VMware)
2021-01-04 17:47 ` [PATCH v8 43/44] kernel-shark: Add VirtBridge and VirtGap classes Yordan Karadzhov (VMware)
2021-01-04 17:47 ` Yordan Karadzhov (VMware) [this message]
2021-01-05  0:27 ` [PATCH v8 00/44] Start KernelShark v2 transformation Steven Rostedt

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