Rewrote profile graph drawing code.

[apitrace] / gui / graphing / graphwidget.h

diff --git a/gui/graphing/graphwidget.h b/gui/graphing/graphwidget.h
new file mode 100644 (file)
index 0000000..16b7786
--- /dev/null
+++ b/gui/graphing/graphwidget.h
@@ -0,0 +1,112 @@
+#ifndef GRAPHWIDGET_H
+#define GRAPHWIDGET_H
+
+#include "graphview.h"
+#include "graphaxiswidget.h"
+#include "graphlabelwidget.h"
+
+class QScrollBar;
+
+/**
+ * The generic GraphWidget class which combines the elements of a graph,
+ * the axis, view, scrollbars and label.
+ */
+class GraphWidget : public QWidget {
+    Q_OBJECT
+public:
+    enum AxisPosition {
+        AxisTop,
+        AxisLeft,
+        AxisRight,
+        AxisBottom
+    };
+
+public:
+    GraphWidget(QWidget* parent = 0);
+    virtual ~GraphWidget(){}
+
+    GraphView* view();
+    GraphLabelWidget* label();
+    GraphAxisWidget* axis(AxisPosition pos);
+
+    void setView(GraphView* view);
+    void setLabel(GraphLabelWidget* label);
+    void setAxis(AxisPosition pos, GraphAxisWidget* axis);
+
+    void setHorizontalScrollBarPolicy(Qt::ScrollBarPolicy policy);
+    void setVerticalScrollBarPolicy(Qt::ScrollBarPolicy policy);
+
+    virtual void resizeEvent(QResizeEvent *e);
+
+protected:
+    /* Used if a selection would be shared between graphs with different axis */
+    virtual SelectionState transformSelectionIn(SelectionState state);
+    virtual SelectionState transformSelectionOut(SelectionState state);
+
+    /* Update the scrollbars based on current view */
+    void updateScrollbars();
+
+    /* Update all signal / slot connections */
+    void updateConnections();
+
+    /* Recalculate child widget layout */
+    void updateLayout();
+
+public slots:
+    void setSelection(SelectionState state);
+
+    /* Set view areas */
+    void setHorizontalView(qint64 start, qint64 end);
+    void setVerticalView(qint64 start, qint64 end);
+
+protected slots:
+    /* View changed by translation / zooming */
+    void verticalViewChange(qint64 start, qint64 end);
+    void verticalRangeChange(qint64 start, qint64 end);
+    void horizontalViewChange(qint64 start, qint64 end);
+    void horizontalRangeChange(qint64 start, qint64 end);
+
+    /* User interaction with scroll bars */
+    void horizontalScrollAction(int action);
+    void verticalScrollAction(int action);
+
+    /* Update child elements when selection changes */
+    void updateSelection(bool emitSignal = true);
+
+signals:
+    void selectionChanged(SelectionState state);
+
+    void verticalViewChanged(qint64 start, qint64 end);
+    void verticalRangeChanged(qint64 start, qint64 end);
+
+    void horizontalViewChanged(qint64 start, qint64 end);
+    void horizontalRangeChanged(qint64 start, qint64 end);
+
+protected:
+    SelectionState m_selection;
+
+    GraphView* m_view;
+
+    GraphLabelWidget* m_label;
+
+    GraphAxisWidget* m_axisTop;
+    GraphAxisWidget* m_axisLeft;
+    GraphAxisWidget* m_axisRight;
+    GraphAxisWidget* m_axisBottom;
+
+    QScrollBar* m_horizontalScrollbar;
+    qint64 m_horizontalMin;
+    qint64 m_horizontalMax;
+    qint64 m_horizontalStart;
+    qint64 m_horizontalEnd;
+    Qt::ScrollBarPolicy m_horizontalScrollbarPolicy;
+
+    QScrollBar* m_verticalScrollbar;
+    qint64 m_verticalMin;
+    qint64 m_verticalMax;
+    qint64 m_verticalStart;
+    qint64 m_verticalEnd;
+    Qt::ScrollBarPolicy m_verticalScrollbarPolicy;
+};
+
+#endif