* Copyright 2009, Ingo Weinhold, ingo_weinhold@gmx.de.
* Distributed under the terms of the MIT License.
*/
#ifndef LINE_CHART_RENDERER_H
#define LINE_CHART_RENDERER_H
#include <InterfaceDefs.h>
#include <Rect.h>
#include <ObjectList.h>
#include "chart/ChartDataRange.h"
#include "chart/ChartRenderer.h"
class BView;
class LineChartRenderer : public ChartRenderer {
public:
class DataSourceConfig;
public:
LineChartRenderer();
virtual ~LineChartRenderer();
virtual bool AddDataSource(ChartDataSource* dataSource,
int32 index,
ChartRendererDataSourceConfig* config);
virtual void RemoveDataSource(ChartDataSource* dataSource);
virtual void SetFrame(const BRect& frame);
virtual void SetDomain(const ChartDataRange& domain);
virtual void SetRange(const ChartDataRange& range);
virtual void Render(BView* view, BRect updateRect);
private:
struct DataSourceInfo;
typedef BObjectList<DataSourceInfo> DataSourceList;
private:
void _InvalidateSamples();
bool _UpdateSamples();
private:
DataSourceList fDataSources;
BRect fFrame;
ChartDataRange fDomain;
ChartDataRange fRange;
};
class LineChartRendererDataSourceConfig : public ChartRendererDataSourceConfig {
public:
LineChartRendererDataSourceConfig();
LineChartRendererDataSourceConfig(
const rgb_color& color);
virtual ~LineChartRendererDataSourceConfig();
const rgb_color& Color() const;
void SetColor(const rgb_color& color);
private:
rgb_color fColor;
};
#endif
