Rewrote profile graph drawing code.

[apitrace] / gui / graphing / heatmapview.h

diff --git a/gui/graphing/heatmapview.h b/gui/graphing/heatmapview.h
new file mode 100644 (file)
index 0000000..781c9a7
--- /dev/null
+++ b/gui/graphing/heatmapview.h
@@ -0,0 +1,124 @@
+#ifndef HEATMAPVIEW_H
+#define HEATMAPVIEW_H
+
+#include "graphview.h"
+
+/**
+ * The heatmap iterator will only return data when there is something to draw,
+ * this allows much faster access to the data in the case where the view is
+ * zoomed out to the point of where there is multiple calls in one pixel,
+ * it automagically calculates the heat for that pixel.
+ */
+class HeatmapRowIterator {
+public:
+    virtual ~HeatmapRowIterator(){}
+
+    /* Go to the next visible heat map */
+    virtual bool next() = 0;
+
+    /* Is the current value GPU or CPU heat */
+    virtual bool isGpu() const = 0;
+
+    /* Current step (normally x coordinate) */
+    virtual int step() const = 0;
+
+    /* Current width (in steps) */
+    virtual int width() const = 0;
+
+    /* Current heat */
+    virtual float heat() const = 0;
+
+    /* Heat value for selected calls */
+    virtual float selectedHeat() const = 0;
+
+    /* Label only used when there is a single call in this heat */
+    virtual QString label() const = 0;
+};
+
+
+/**
+ * Data provider for the whole heatmap
+ */
+class HeatmapDataProvider {
+public:
+    virtual ~HeatmapDataProvider(){}
+
+    /* The start and end values (time on x-axis) for the heatmap */
+    virtual qint64 start() const = 0;
+    virtual qint64 end() const = 0;
+
+    /*
+     * Header rows (fixed at top of heatmap view)
+     */
+
+    /* Header row count */
+    virtual unsigned headerRows() const = 0;
+
+    /* Label to be used in the vertical axis */
+    virtual QString headerLabel(unsigned row) const = 0;
+
+    /* Get identifier (program no) for row */
+    virtual qint64 headerRowAt(unsigned row) const = 0;
+
+    /* Get item at row and time */
+    virtual qint64 headerItemAt(unsigned row, qint64 time) const = 0;
+
+    /* Get iterator for a row between start and end time for steps */
+    virtual HeatmapRowIterator* headerRowIterator(int row, qint64 start, qint64 end, int steps) const = 0;
+
+    /*
+     * Data rows (scrollable in heatmap view)
+     */
+
+    /* Data row count */
+    virtual unsigned dataRows() const = 0;
+
+    /* Label to be used in the vertical axis */
+    virtual QString dataLabel(unsigned row) const = 0;
+
+    /* Get identifier (program no) for row */
+    virtual qint64 dataRowAt(unsigned row) const = 0;
+
+    /* Get item at row and time */
+    virtual qint64 dataItemAt(unsigned row, qint64 time) const = 0;
+
+    /* Get iterator for a row between start and end time for steps */
+    virtual HeatmapRowIterator* dataRowIterator(int row, qint64 start, qint64 end, int steps) const = 0;
+
+    /* Handle double click on item */
+    virtual void itemDoubleClicked(qint64 index) const = 0;
+
+    /* Get mouse over tooltip for item */
+    virtual QString itemTooltip(qint64 index) const = 0;
+
+    /* Set the selection */
+    virtual void setSelectionState(SelectionState* state) = 0;
+};
+
+
+/**
+ * A not very generic heatmap for row based data
+ */
+class HeatmapView : public GraphView {
+public:
+    HeatmapView(QWidget* parent);
+
+    void setDataProvider(HeatmapDataProvider* data);
+    void setSelectionState(SelectionState* state);
+
+    virtual void mouseMoveEvent(QMouseEvent *e);
+    virtual void mouseDoubleClickEvent(QMouseEvent *e);
+
+    virtual void paintEvent(QPaintEvent *e);
+    virtual void paintRow(QPainter& painter, HeatmapRowIterator* itr);
+
+
+protected:
+    qint64 itemAtPosition(QPoint pos);
+
+protected:
+    int m_rowHeight;
+    HeatmapDataProvider* m_data;
+};
+
+#endif