From 4ef37f16257b42512ec610cc5def338707308747 Mon Sep 17 00:00:00 2001
From: Samuel Fadel <samuel@nihil.ws>
Date: Tue, 6 Jun 2023 16:58:40 +0200
Subject: BarChart, Wayland.

* Makefile: Added some Wayland stuff to cflags/libs in pkg-config
* barchart: Rendering works, no interactivity
* main.cpp: Reposition some components for a more compact view
* manifest.scm: glfw-wayland: Added GLFW variant with Wayland
* scatterplot.cpp and voronoisplat.cpp: Cleanup
---
 barchart.h | 20 ++++++++++++++------
 1 file changed, 14 insertions(+), 6 deletions(-)

(limited to 'barchart.h')

diff --git a/barchart.h b/barchart.h
index 9e2b421..947fe2b 100644
--- a/barchart.h
+++ b/barchart.h
@@ -5,10 +5,11 @@
 #include <vector>
 
 #include <armadillo>
+#include <glad/gl.h>
 #include <nod.hpp>
 
-#include "colorscale.h"
 #include "scale.h"
+#include "shader.h"
 
 class BarChart
 {
@@ -17,23 +18,25 @@ public:
 
     size_t width() const { return m_width; }
     size_t height() const { return m_height; }
+    GLuint texture() const { return m_outTex; }
 
     nod::signal<void(const arma::vec &)> valuesChanged;
-    nod::signal<void(std::shared_ptr<const ColorScale>)> colorScaleChanged;
     nod::signal<void(const std::vector<bool> &)> selectionChanged;
     nod::signal<void(const std::vector<bool> &)> selectionInteractivelyChanged;
     nod::signal<void(int, float)> itemBrushed;
     nod::signal<void(int)> itemInteractivelyBrushed;
 
+    void setSize(size_t, size_t);
     void setValues(const arma::vec &values);
     void updateValues(const arma::vec &values);
-    void setColorScale(std::shared_ptr<const ColorScale> scale);
+    void setColormap(GLuint texture);
     void setSelection(const std::vector<bool> &selection);
     void brushItem(int item);
 
     void update();
+    void draw();
 
-protected:
+    // protected:
     // QSGNode *updatePaintNode(QSGNode *oldNode, UpdatePaintNodeData *);
 
     // void hoverEnterEvent(QHoverEvent *event);
@@ -45,6 +48,8 @@ protected:
     // void mouseReleaseEvent(QMouseEvent *event);
 
 private:
+    void updateBars();
+
     // QSGNode *newSceneGraph() const;
     // QSGNode *newBarNode() const;
     // QSGNode *newSelectionBarNode() const;
@@ -53,6 +58,7 @@ private:
     // void updateBarNodeGeom(QSGNode *barNode, float x, float width, float height) const;
     // void updateBarNodeColor(QSGNode *barNode, const QColor &color) const;
     // void updateBars(QSGNode *node) const;
+    bool m_redraw;
     bool m_shouldUpdateBars;
 
     // void updatePreSelection(QSGNode *node) const;
@@ -71,11 +77,13 @@ private:
 
     int itemAt(float x, bool includeSelectorWidth = false) const;
 
+    size_t m_width, m_height;
+    GLuint m_FBO, m_VAO, m_VBO, m_colormapTex, m_outTex;
+    std::unique_ptr<Shader> m_shader;
+
     arma::vec m_values;
-    std::shared_ptr<const ColorScale> m_colorScale;
     std::vector<int> m_originalIndices, m_currentIndices;
     LinearScale<float> m_scale;
-    size_t m_width, m_height;
 };
 
 #endif // BARCHART_H
-- 
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